Aluminum extrusion machine

Abstract

The invention discloses an aluminum extruder, including an extrusion frame, an extrusion hydraulic device, an extrusion die fixing seat, an extrusion cylinder seat, an extrusion die seat, an extrusion front die, an extrusion rear die, a belt conveyor, an extrusion die replacement mechanism and an extrusion die cleaning mechanism; the extrusion die replacement mechanism includes a lifting platform lifted on the extrusion frame, a rotating bracket rotated on the lifting platform, a hydraulic telescopic cylinder 1 and a rotating device driving the lifting platform to lift and the rotating bracket to rotate; the extrusion die cleaning mechanism includes a cleaning table fixed on the extrusion frame, a hydraulic telescopic cylinder 2 fixed on the cleaning table, a die removal device connected to the piston rod of the hydraulic telescopic cylinder 2, an extrusion die fixing frame and a lifting frame sliding and lifting on the cleaning table, a clamping fixing device arranged on the extrusion die fixing frame, a lifting device and a moving device driving the lifting frame to lift and move the extrusion die fixing frame, and two ejection plates and an aluminum waste ejection rod of the fixed lifting frame. Advantages of the invention: Automatically remove residual aluminum waste from the extrusion die.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum profile processing, and in particular to an aluminum profile extruder. Background Art

[0002] In the extrusion process of aluminum profiles, after a certain number of aluminum bars are extruded, a lot of aluminum waste (also called "pressing residue") will accumulate in the extrusion die, affecting the forming process or even completely blocking the die. At that time, the die needs to be disassembled and replaced with a new one; the used die needs to be cleaned of aluminum waste before it can be put back on the machine for reuse. At present, the mold is generally processed through the mold burning process. The principle is to put the mold into a sodium hydroxide solution to dissolve the aluminum part in the mold, then take out the mold, clean it, and then clean and remove the small amount of aluminum remaining on the mold. However, the mold burning process generally takes 6 to 8 hours, so the mold burning process has the disadvantages of long time, large amount of sodium hydroxide consumption, complex operation, and high labor intensity for workers to deal with residual aluminum. Summary of the invention

[0003] The purpose of the present invention is to provide an aluminum material extruder which has the effect of automatically removing residual aluminum waste from an extrusion die.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: an aluminum extruder, comprising an extrusion frame, an extrusion hydraulic device fixedly mounted on the tail of the extrusion frame, an extrusion die fixing seat fixedly mounted on the head of the extrusion frame, an extrusion cylinder seat movable forward and backward and arranged between the extrusion hydraulic device and the extrusion fixing seat, an extrusion die seat slidably mounted on one side of the extrusion die fixing seat, and an extrusion front die and an extrusion rear die detachable and assembled in the extrusion die seat and fitted forward and backward, a belt conveyor for moving the extrusion die seat in or out between the extrusion cylinder seat and the extrusion fixing seat is mounted on the extrusion frame, and an extrusion die replacement mechanism and an extrusion die cleaning mechanism are arranged on one side of the extrusion frame located on the extrusion die fixing seat; the extrusion die replacement mechanism comprises a lifting platform that can be lifted and slid on the extrusion frame, a rotating bracket rotating on the lifting platform, a hydraulic telescopic cylinder fixed on the extrusion frame and driving the lifting platform to lift up and down, and a rotating device arranged on the lifting platform and driving the rotating bracket to rotate, the rotating bracket is H-shaped, and one end of the belt conveyor extends into the notch of the rotating bracket;

[0005] The extrusion die cleaning mechanism comprises a cleaning table fixed to an extrusion frame and located on one side above the lifting table, a second hydraulic telescopic cylinder fixedly mounted on the cleaning table, a mold removal device fixed to the front end of the piston rod of the second hydraulic telescopic cylinder, a pair of annular extrusion die fixing frames sliding on the cleaning table, a moving device driving the two extrusion die fixing frames to move closer to or away from each other, a clamping and fixing device respectively arranged on opposite sides of the two extrusion die fixing frames and clamping the extrusion die, a lifting frame that can be lifted and lowered on the cleaning table, a lifting device driving the lifting frame to move up and down, two ejection plates fixed on both sides of the lifting frame, and a moving device respectively fixed on the two sides of the lifting frame. The aluminum scrap push rod is fixed on the opposite side of the two ejector plates, the piston rod of the second hydraulic telescopic cylinder and the mold removal device horizontally pass through the two extrusion die fixing frames, and a limiting ring is fixedly arranged on the side of one extrusion die fixing frame close to the second hydraulic telescopic cylinder for only the mold removal device to pass through. The clamping and fixing devices of the two extrusion die fixing frames respectively clamp and fix the front extrusion die and the rear extrusion die. The two ejector plates are located on the opposite sides of the two extrusion die fixing frames, and a gap is left between them for the extrusion die fixing frames to move. The aluminum scrap push rods of the two ejector plates correspond to the extrusion holes in the middle of the front extrusion die and the rear extrusion die respectively.

[0006] By adopting the above technical scheme, when it is necessary to clean the residual aluminum waste in the extrusion die, first, the belt conveyor will transport the extrusion die base equipped with the extrusion front die and the extrusion rear die from between the extrusion cylinder base and the extrusion die base to one side of the rotating bracket, and then the hydraulic telescopic cylinder on the extrusion frame will push the lifting platform upward to raise the rotating bracket. At the same time, the rotating device will drive the rotating platform to rotate, and the extrusion die base of the extrusion die to be cleaned just transported to one side of the rotating bracket will be replaced with the extrusion die base of the extrusion die that has been cleaned before, and wait until the extrusion die base of the extrusion die to be cleaned is When it rises to one side of the mold removal device, the hydraulic telescopic cylinder 2 will drive the mold removal device to approach the front extrusion die and the rear extrusion die inside the extrusion die seat, and at the same time simply connect with the positioning holes on the front extrusion die and the rear extrusion die. Then the hydraulic telescopic cylinder 1 will lower the lifting platform, so that the extrusion die seat is separated from the front extrusion die and the rear extrusion die inside it. At the same time, the extrusion die seat that has finished cleaning the extrusion die will then be lowered onto the belt conveyor and transported by the belt conveyor to the middle of the extrusion barrel seat and the extrusion die seat of the extruder for the next round of extrusion molding of aluminum profiles, thereby realizing the automatic replacement of the extrusion die.

[0007] After the above-mentioned extrusion die replacement is completed, first, the hydraulic telescopic cylinder 2 on the cleaning table will drive the die removal device, and the front extrusion die and the rear extrusion die connected thereto, to pass into the extrusion die fixing frame on the cleaning table. Since a limiting ring is set in the extrusion die fixing frame for only the passage of the die removal device, when the die removal device passes through the extrusion die fixing frame, the connection between the die removal device and the front extrusion die and the rear extrusion die will be naturally released, and the two will be respectively retained in the inner rings of the two extrusion die fixing frames. Then, the clamping and fixing device on the extrusion die fixing frame will clamp the front extrusion die or the rear extrusion die, and at the same time, the lifting device will drive the lifting frame to move downward, so that the two ejector plates move to the two sides of the two extrusion die fixing frames respectively, and then the moving device drives the two extrusion die fixing frames to move away from each other, pulling the front extrusion die and the rear extrusion die apart by a certain distance. The distance is large, and because the aluminum waste rods of the two ejector plates correspond to the extrusion holes in the middle of the front extrusion die and the rear extrusion die respectively, during the process of pulling the front extrusion die and the rear extrusion die apart, the aluminum waste rods on one side of the two top plates will penetrate into the extrusion holes of the front extrusion die and the rear extrusion die aluminum, and gradually eject the residual aluminum waste inside the two, so as to achieve the effect of cleaning the inside of the extrusion die. After the aluminum waste is completely out of the front extrusion die and the rear extrusion die, the moving device and the lifting device will respectively drive the extrusion die fixing frame and the upgrading frame to restore their initial positions, and at the same time, the driving cylinder 2 will push the mold taking device to extend into the extrusion die fixing frame, connect and take out the front extrusion die and the rear extrusion die, and move them to the top of the extrusion die seat. Finally, when the hydraulic telescopic cylinder 1 drives the lifting platform and the rotating bracket to rise again, the front extrusion die and the rear extrusion die return to the extrusion die seat for subsequent replacement and use.

[0008] The present invention is further configured as follows: the rotating device includes a rotating shaft fixed to the bottom of the rotating bracket and rotatably connected to the lifting platform, a worm wheel fixedly installed on the rotating shaft, a worm rotatably installed on the lifting platform and meshing with the worm wheel, and a servo motor fixedly installed on the lifting platform and with the output end connected to the worm wheel. A cavity one is opened inside the lifting platform, and the rotating shaft and the output end of the servo motor rotate and penetrate into the cavity one respectively, and the worm wheel and the worm are located in the cavity one and mesh with each other for transmission.

[0009] By adopting the above technical solution, when it is necessary to drive the rotating bracket to rotate, the servo motor on the lifting platform will first drive the worm to rotate, then the worm will engage and drive the worm wheel to rotate, and finally the worm wheel will drive the rotating shaft and the rotating bracket to rotate together, and then cooperate with the hydraulic telescopic cylinder to achieve the effect of the rotating bracket rising and falling at the same time.

[0010] The present invention is further configured as follows: the mold removal device includes a circular mold removal template, a plurality of positioning pins fixed on the mold removal template corresponding to positioning holes of the extrusion front mold and the extrusion rear mold, the inner ring of the mold removal template and the extrusion mold fixing frame are coaxial, and the outer diameter of the mold removal template does not exceed the inner diameter of the limiting ring.

[0011] By adopting the above technical solution, it is possible to effectively achieve the effect of taking out or putting in the extrusion front die and the extrusion rear die from the extrusion die base or the extrusion die fixing frame.

[0012] The present invention is further configured as follows: the moving device includes a rotating shaft 1 that rotates on the cleaning table and is perpendicular to the piston rod of the second hydraulic telescopic cylinder, a driving gear fixedly installed on the middle part of the rotating shaft 1, a rack 1 that is vertically fixed to the side of the template away from the positioning pin and meshing with the driving gear, a pair of driven gears 1 that are respectively fixedly installed at both ends of the rotating shaft 1, a rack 2 and a rack 3 that are respectively fixedly connected to the two extrusion die fixing frames and respectively meshing with the two driven gears 1, the rotating shaft 1 is located between the lifting frame and the second hydraulic telescopic cylinder, the rack 2 and the rack 3 are respectively located on the upper and lower sides of the rotating shaft 1, and are located in front of the second hydraulic telescopic cylinder and respectively meshed with the two driven gears 1, and a mounting plate for mounting the second hydraulic telescopic cylinder is fixedly provided on the cleaning table, and an opening for the rack 1 to pass through is provided on the mounting plate.

[0013] By adopting the above technical solution, when the template is removed to place the front extrusion die and the rear extrusion die into the extrusion die fixing frame and simultaneously exit the lifting range of the lifting frame, the hydraulic telescopic cylinder 1 will continue to drive the template to move away from the extrusion die fixing frame and the lifting frame. During this process, the rack 1 will engage with the transmission driving gear to rotate, and then the driving gear will drive the rotating shaft 1 to rotate, so that the two driven gears 1 on the rotating shaft 1 will respectively engage with the transmission rack 2 and the rack 3. Since the rack 2 and the rack 3 are respectively located on the upper and lower sides of the rotating shaft 1, the rack 2 and the rack 3 will respectively drive the two extrusion die fixing frames to move away from each other.

[0014] The present invention is further configured as follows: the lifting frame is a square frame, and the two extrusion die fixing frames are located in the middle of the lifting frame, the lifting device includes four guide columns one vertically fixed on the cleaning table and sliding through the four corners of the lifting frame, two support plates respectively fixedly connected to the upper ends of two pairs of guide columns one, and lifting cylinders respectively fixedly installed on the two support plates, and the piston rod of the lifting cylinder vertically passes through the support plate and is fixedly connected to the lifting frame.

[0015] By adopting the above technical solution, the precise and stable lifting movement of the lifting frame can be guaranteed.

[0016] The present invention is further configured as follows: the clamping and fixing device includes a plurality of rotating shafts rotatably connected to one side of the extrusion die fixing frame, a clamping rubber column fixed to one end of the rotating shaft 2, and a rotating component driving the rotating shaft 2 to rotate, the rotating shaft evenly surrounds the axis of the inner ring of the extrusion die, the clamping rubber column is eccentrically connected to the rotating shaft 2, and the axis centerline of the clamping rubber column is parallel and located above the axis centerline of the rotating shaft 2, a cavity 2 is opened inside the extrusion die fixing frame, one end of the rotating shaft 2 rotates and penetrates into the cavity 2, and the rotating component is installed in the cavity 2.

[0017] By adopting the above technical solution, when it is necessary to clamp and fix the front extrusion mold or the rear extrusion mold, the rotating component will first drive the rotating shaft 2 to rotate, so that the clamping rubber column connected to one end of the rotating shaft 2 rotates together. Since the clamping rubber column is eccentrically connected to the rotating shaft 2, and the axis center line of the clamping rubber column is parallel and located above the axis center line of the rotating shaft 2, after all the rotating shafts 2 rotate half a circle, the parts of all the clamping rubber columns farthest from the axis center line of the rotating shaft 2 will be firmly attached to the outer side wall of the front extrusion mold or the rear extrusion mold, thereby clamping the front extrusion mold and the rear extrusion mold to the extrusion mold fixing frame.

[0018] The present invention is further configured as follows: the rotating assembly includes a rotating ring that rotates in the cavity and is coaxial with the inner ring of the extrusion die fixing frame, an outer gear ring and an inner gear ring respectively fixed on the inner and outer sides of the rotating ring, a driven gear 2 that rotates on a rotating shaft 2 and is located in the cavity and meshes with the inner gear ring, a guide column 2 fixed on the lifting frame and parallel to the rotating shaft 2, a guide sleeve that slides on the guide column 2, and a rack 4 that is fixed to the lower end of the guide sleeve and vertically penetrates into the cavity 2 and meshes with the outer gear ring.

[0019] By adopting the above technical solution, when the lifting frame descends the aluminum waste ejection device, the rack four will extend into the cavity of the extrusion die fixing frame under the push of the guide column two, and simultaneously engage the outer gear ring to rotate, and then the outer gear ring drives the inner gear ring to rotate through the rotating ring, so that the inner gear ring engages with the driven gear two at one end of all the rotating shafts two to rotate, and finally all the rotating shafts two will rotate synchronously, so that the clamping rubber columns connected to each of them will jointly clamp the extrusion front die or the extrusion rear die inside the extrusion die fixing frame.

[0020] The present invention is further configured as follows: the cleaning table is provided with an aluminum waste discharge port below the extrusion die fixed bracket, the extrusion frame is provided with an aluminum waste collection box below the aluminum waste discharge port, and the cleaning table is fixedly installed with a pair of horizontal guide columns three at the aluminum waste discharge port, and the guide columns three respectively slide vertically through the lower parts of the two extrusion die fixed brackets.

[0021] By adopting the above technical solution, not only can the aluminum waste ejected from the concentrated extrusion front die and the extrusion rear die be quickly recovered, but the sliding stability of the extrusion die fixing frame is further guaranteed.

[0022] The present invention is further configured as follows: a pair of guide columns four are vertically fixedly arranged at the bottom of the lifting platform, the guide columns four are parallelly located on both sides of the hydraulic telescopic cylinder one, and vertically slide through the extrusion frame.

[0023] By adopting the above technical solution, the lifting stability of the lifting platform can be further guaranteed.

[0024] The beneficial effects of the present invention are:

[0025] 1. Through the lifting and rotating structures such as the lifting platform and rotating bracket in the extrusion die replacement mechanism, not only can the extrusion die be automatically replaced to ensure the continuous operation of the extruder, but also the cleaning table, die removal device and extrusion die fixing frame in the extrusion die cleaning mechanism can automatically disassemble the replaced extrusion die and remove the residual aluminum waste in it physically, thereby reducing labor costs and effectively improving the cleaning efficiency of the extrusion die.

[0026] 2. Through the structure of the rotating shaft 2 and the clamping rubber column in the clamping fixing device, not only can the extrusion front mold or the extrusion rear mold be clamped and fixed in the extrusion mold fixing frame, but also, in conjunction with the transmission structures such as racks and gears in the rotating assembly, the lifting power of the lifting cylinder when driving the upgrading frame to lift can be fully utilized and converted into the rotational power required by the rotating shaft 2, thereby improving the energy utilization rate of the lifting cylinder while eliminating unnecessary drive control equipment, thereby effectively reducing the working energy consumption and manufacturing cost of the cleaning mechanism.

[0027] 3. The transmission structure such as gears and racks in the moving device can fully utilize the power of the hydraulic telescopic cylinder 2 to drive the template to move, and convert it into power for the two extrusion die fixing frames to move away from or closer to each other, thereby improving the energy utilization rate of the hydraulic telescopic cylinder 2 and eliminating unnecessary drive control equipment, thereby reducing the working energy consumption and manufacturing cost of the cleaning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the extrusion die replacement mechanism and the extrusion die cleaning mechanism of the present invention;

[0031] Figure 3 It is a schematic structural diagram of the mold taking device, the moving device and the clamping and fixing device of the present invention;

[0032] Figure 4 It is a schematic structural diagram of the rotating device of the present invention;

[0033] In the figure, 1, extrusion frame; 2, extrusion hydraulic equipment; 3, extrusion die fixing seat; 4, extrusion cylinder seat; 5, extrusion die seat; 51, extrusion front die; 52, extrusion rear die; 6, belt conveyor; 7, extrusion die replacement mechanism; 71, lifting platform; 711, cavity one; 712, guide column four; 72, rotating bracket; 73, hydraulic telescopic cylinder one; 74, rotating device; 741, rotating shaft; 742, worm gear; 743, worm; 744, servo motor; 8, extrusion die cleaning mechanism; 81, cleaning table; 811, mounting plate; 812, aluminum waste material outlet; 813, guide column three; 82, hydraulic telescopic cylinder two; 83, mold removal device; 831, mold removal template; 832, positioning pin; 84, extrusion die fixing frame ;841, limit ring;842, cavity two;85, moving device;851, rotating shaft one;852, driving gear;853, rack one;854, driven gear one;855, rack two;856, rack three;86, clamping and fixing device;861, rotating shaft two;862, clamping rubber column;863, rotating component;863a, rotating ring;863b, outer gear ring;863c, inner gear ring;863d, driven gear two;863e, guide column two;863f, guide sleeve;863g, rack four;87, lifting frame;88, lifting device;881, guide column one;882, support plate;883, lifting cylinder;89, ejector plate;891, aluminum waste ejector rod;9, aluminum waste collection box. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0035] Embodiment: An aluminum extruder, such as Figure 1-4As shown, it includes an extrusion frame 1, an extrusion hydraulic device 2 fixedly mounted on the rear of the extrusion frame 1, an extrusion die fixing seat 3 fixedly mounted on the head of the extrusion frame 1, an extrusion barrel seat 4 that can be moved forward and backward and arranged between the extrusion hydraulic device 2 and the extrusion fixing seat, an extrusion die seat 5 that is slidably mounted on one side of the extrusion die fixing seat 3, and an extrusion front die 51 and an extrusion rear die 52 that can be detachably mounted in the extrusion die seat 5 and fit forward and backward. A belt conveyor 6 is installed on the extrusion frame 1 to move the extrusion die seat 5 in or out between the extrusion barrel seat 4 and the extrusion fixing seat. An extrusion die replacement mechanism 7 and an extrusion die cleaning mechanism 8 are provided on one side of the frame 1 located at the extrusion die fixing seat 3; the extrusion die replacement mechanism 7 includes a lifting platform 71 that can be lifted and slid on the extrusion frame 1, a rotating bracket 72 that rotates on the lifting platform 71, a hydraulic telescopic cylinder 73 that is fixed on the extrusion frame 1 and drives the lifting platform 71 to move up and down, and a rotating device 74 that is arranged on the lifting platform 71 and drives the rotating bracket 72 to rotate. The rotating bracket 72 is H-shaped, and one end of the belt conveyor 6 extends into the gap of the rotating bracket 72;

[0036] The extrusion die cleaning mechanism 8 includes a cleaning table 81 fixed to the extrusion frame 1 and located on one side above the lifting platform 71, a hydraulic telescopic cylinder 82 fixedly installed on the cleaning table 81, a mold removal device 83 fixed to the front end of the piston rod of the hydraulic telescopic cylinder 82, a pair of annular extrusion die fixing frames 84 sliding on the cleaning table 81, a moving device 85 for driving the two extrusion die fixing frames 84 to move closer to or away from each other, a clamping and fixing device 86 respectively arranged on the opposite sides of the two extrusion die fixing frames 84 and clamping the extrusion die, a lifting frame 87 that can be lifted and lowered on the cleaning table 81, a lifting device 88 for driving the lifting frame 87 to move up and down, two ejection plates 89 fixed on both sides of the lifting frame 87, and a lifting device 89 respectively arranged on the opposite sides of the two extrusion die fixing frames 84. The aluminum waste rod 891 is fixed on the opposite side of the two ejection plates 89, the piston rod of the hydraulic telescopic cylinder 82 and the mold removal device 83 horizontally pass through the two extrusion die fixing frames 84, and a limiting ring 841 is fixedly provided on the side of one extrusion die fixing frame 84 close to the hydraulic telescopic cylinder 82, through which only the mold removal device 83 passes. The clamping and fixing devices 86 of the two extrusion die fixing frames 84 clamp and fix the front extrusion die 51 and the rear extrusion die 52 respectively. The two ejection plates 89 are located on the opposite sides of the two extrusion die fixing frames 84, and a gap is left between them for the extrusion die fixing frames 84 to move. The aluminum waste rods 891 of the two ejection plates 89 correspond to the extrusion holes in the middle of the front extrusion die 51 and the rear extrusion die 52 respectively.

[0037] By adopting the above technical solution, when it is necessary to clean the residual aluminum waste in the extrusion die, first, the belt conveyor 6 will transport the extrusion die base 5 equipped with the extrusion front die 51 and the extrusion rear die 52 from between the extrusion cylinder base 4 and the extrusion die base 5 to the side of the rotating bracket 72, and then the hydraulic telescopic cylinder 73 on the extrusion frame 1 will push the lifting platform 71 to move upward to raise the rotating bracket 72. At the same time, the rotating device 74 will drive the rotating table to rotate, and the extrusion die base 5 of the extrusion die to be cleaned just transported to the side of the rotating bracket 72 will be replaced with the extrusion die base 5 of the extrusion die that has been cleaned before, and wait until the extrusion die base 5 of the extrusion die to be cleaned is raised. When it reaches the side of the mold removal device 83, the hydraulic telescopic cylinder 2 82 will drive the mold removal device 83 to approach the extrusion front die 51 and the extrusion rear die 52 inside the extrusion die base 5, and at the same time simply connect with the positioning holes on the extrusion front die 51 and the extrusion rear die 52, and then the hydraulic telescopic cylinder 1 73 will lower the lifting platform 71, so that the extrusion die base 5 is separated from the extrusion front die 51 and the extrusion rear die 52 inside it, and at the same time, the extrusion die base 5 that has finished cleaning the extrusion die will then be lowered onto the belt conveyor 6, and conveyed by the belt conveyor 6 to the middle of the extrusion cylinder base 4 and the extrusion die base 5 of the extruder for the next round of extrusion molding of aluminum profiles, thereby realizing the automatic replacement of the extrusion die;

[0038] After the above-mentioned extrusion die replacement is completed, first, the hydraulic telescopic cylinder 82 on the cleaning table 81 will drive the mold removal device 83, and the front extrusion die 51 and the rear extrusion die 52 connected thereto, to pass through the extrusion die fixing frame 84 on the cleaning table 81. Since a limiting ring 841 is set in the extrusion die fixing frame 84 for only the mold removal device 83 to pass through, when the mold removal device 83 passes through the extrusion die fixing frame, the connection between the mold removal device 83 and the front extrusion die 51 and the rear extrusion die 52 will be naturally released, and the two will be respectively retained in the inner circle of the two extrusion die fixing frames 84. Then, the clamping and fixing device 86 on the extrusion die fixing frame 84 will clamp and fix the front extrusion die 51 or the rear extrusion die 52, and at the same time, the lifting device 88 will drive the lifting frame 87 to move downward, so that the two ejection plates 89 are respectively moved to the two sides of the two extrusion die fixing frames 84, and then the moving device 85 drives the two extrusion die fixing frames 84 to move away from each other, so as to pull the front extrusion die 51 and the rear extrusion die 52 apart. A certain distance is formed between the two ejector plates 89, and because the aluminum waste rods 891 of the two ejector plates 89 correspond to the extrusion holes in the middle of the front extrusion die 51 and the rear extrusion die 52 respectively, during the process of pulling the front extrusion die 51 and the rear extrusion die 52 apart, the aluminum waste rods 891 on one side of the two top plates will penetrate into the aluminum extrusion holes of the front extrusion die 51 and the rear extrusion die 52, and gradually eject the residual aluminum waste inside the two, so as to achieve the effect of cleaning the inside of the extrusion die. After the aluminum waste is completely removed from the front extrusion die 51 and the rear extrusion die 52, the aluminum waste rods 891 on one side of the two top plates will penetrate into the aluminum extrusion holes of the front extrusion die 51 and the rear extrusion die 52, and gradually eject the residual aluminum waste inside the two, so as to achieve the effect of cleaning the inside of the extrusion die. The driving device 85 and the lifting device 88 will respectively drive the extrusion die fixing frame 84 and the upgrading frame to restore the initial positions, and at the same time, the driving cylinder 2 will push the mold removal device 83 to extend into the extrusion die fixing frame 84, connect and take out the front extrusion die 51 and the rear extrusion die 52, and move them to the top of the extrusion die seat 5. Finally, the hydraulic telescopic cylinder 1 73 drives the lifting platform 71 and the rotating bracket 72 to rise again, so that the front extrusion die 51 and the rear extrusion die 52 return to the extrusion die seat 5 to be replaced and used later.

[0039] like Figure 4As shown, the rotating device 74 includes a rotating shaft 741 fixed to the bottom of the rotating bracket 72 and rotatably connected to the lifting platform 71, a worm wheel 742 fixedly installed on the rotating shaft 741, a worm 743 rotatably installed on the lifting platform 71 and meshing with the worm wheel 742, and a servo motor 744 fixedly installed on the lifting platform 71 and the output end of which is connected to the worm 743. A cavity 711 is opened inside the lifting platform 71, and the rotating shaft 741 and the output ends of the servo motor 744 rotate and penetrate into the cavity 711 respectively, and the worm wheel 742 and the worm 743 are located in the cavity 711 and mesh with each other for transmission. By adopting the rotating device 74 with the above structure, when it is necessary to drive the rotating bracket 72 to rotate, first the servo motor 744 on the lifting platform 71 will drive the worm 743 to rotate, then the worm 743 meshes with the worm wheel 742 to rotate, and finally the worm wheel 742 drives the rotating shaft 741 and the rotating bracket 72 to rotate together, and then cooperates with the hydraulic telescopic cylinder 73 to achieve the effect of the rotating bracket 72 being lifted and rotated at the same time.

[0040] like Figure 2 , Figure 3As shown, the mold removal device 83 includes a circular mold removal plate 831, a plurality of positioning pins 832 fixed on the mold removal plate 831 corresponding to the positioning holes of the front extrusion mold 51 and the rear extrusion mold 52, the mold removal plate 831 and the inner circle of the extrusion mold fixing frame 84 are coaxial, and the outer diameter of the mold removal plate 831 does not exceed the inner diameter of the limiting ring 841. By adopting the mold removal device 83 of the above structure, the front extrusion mold 51 and the rear extrusion mold 52 can be effectively taken out or put into the extrusion mold base 5 or the extrusion mold fixing frame 84; the moving device 85 includes a moving device 85 that rotates on the cleaning table 81 The rotating shaft 1 851 of the piston rod of the vertical hydraulic telescopic cylinder 2 82, the driving gear 852 fixedly installed on the middle of the rotating shaft 1 851, the rack 1 853 vertically fixed to the side of the template 831 away from the positioning pin 832 and meshing with the driving gear 852, a pair of driven gears 1 854 fixedly installed at both ends of the rotating shaft 1 851, and the racks 2 855 and 3 856 fixedly connected to the two extrusion die fixing frames 84 and meshing with the two driven gears 1 854 respectively. The rotating shaft 1 851 is located between the lifting frame 87 and the hydraulic telescopic cylinder 2 82, and the gears 853 are fixedly installed at the two ends of the rotating shaft 1 851. The rack 855 and the rack 856 are respectively located on the upper and lower sides of the rotating shaft 851, and are located in front of the hydraulic telescopic cylinder 82 to respectively keep meshing with the two driven gears 854. A mounting plate 811 for mounting the hydraulic telescopic cylinder 82 is fixedly provided on the cleaning table 81, and an opening for the rack 853 to pass through is opened on the mounting plate 811. By adopting the above technical solution, when the template 831 is taken out to put the extrusion front die 51 and the extrusion rear die 52 into the extrusion die fixing frame 84, and at the same time exit the lifting range of the lifting frame 87, the hydraulic telescopic cylinder 73 will continue to The plate removal template 831 is continuously driven away from the extrusion die fixing frame 84 and the lifting frame 87. During this process, the rack 1 853 will engage with the driving gear 852 to rotate, and then the driving gear 852 will drive the rotating shaft 1 851 to rotate, so that the two driven gears 1 854 on the rotating shaft 1 851 are respectively engaged with the transmission rack 2 855 and the rack 3 856. Since the rack 2 855 and the rack 3 856 are respectively located on the upper and lower sides of the rotating shaft 1 851, the rack 2 855 and the rack 3 856 will respectively drive the two extrusion die fixing frames 84 away from each other.

[0041] like Figure 2 , Figure 3As shown, the clamping and fixing device 86 includes a plurality of rotating shafts 861 rotatably connected to one side of the extrusion die fixing frame 84, a clamping rubber column 862 fixed to one end of the rotating shaft 861, and a rotating assembly 863 driving the rotating shaft 861 to rotate. The rotating shafts evenly surround the axis of the inner ring of the extrusion die, the clamping rubber column 862 is eccentrically connected to the rotating shaft 861, and the axis line of the clamping rubber column 862 is parallel and located above the axis line of the rotating shaft 861. A cavity 842 is opened inside the extrusion die fixing frame 84, one end of the rotating shaft 861 rotates and penetrates into the cavity 842, and the rotating assembly 863 is installed in the cavity 842. By adopting the above technical solution, when clamping is required When fixing the front extrusion mold 51 or the rear extrusion mold 52, the rotating component 863 will first drive the rotating shaft 861 to rotate, so that the clamping rubber column 862 connected to one end of the rotating shaft 861 will rotate together. Since the clamping rubber column 862 is eccentrically connected to the rotating shaft 861, and the axis of the clamping rubber column 862 is parallel and located above the axis of the rotating shaft 861, after all the rotating shafts 861 rotate half a circle, the parts of all the clamping rubber columns 862 farthest from the axis of the rotating shaft 861 will be firmly attached to the outer wall of the front extrusion mold 51 or the rear extrusion mold 52, thereby clamping the front extrusion mold 51 and the rear extrusion mold 52 on the extrusion mold fixing frame 84.

[0042] like Figure 3 As shown, the rotating assembly 863 includes a rotating ring 863a that rotates in the cavity and is coaxial with the inner ring of the extrusion die fixing frame 84, an outer gear ring 863b and an inner gear ring 863c fixed to the inner and outer sides of the rotating ring 863a respectively, a driven gear 863d that rotates on the rotating shaft 861 and is located in the cavity to engage with the inner gear ring 863c, a guide column 863e that is fixed on the lifting frame 87 and parallel to the rotating shaft 861, a guide sleeve 863f that slides on the guide column 863e, and a rack 863g that is fixed to the lower end of the guide sleeve 863f and vertically penetrates into the cavity 842 to engage with the outer gear ring 863b. By adopting the above technical solution, when the lifting frame 87 lowers the aluminum waste ejection device, the rack four 863g will be pushed by the guide column two 863e to extend into the cavity of the extrusion die fixing frame 84, and at the same time engage the transmission outer gear ring 863b to rotate, and then the outer gear ring 863b drives the inner gear ring 863c to rotate through the rotating ring 863a, so that the inner gear ring 863c engages with the driven gear two 863d at one end of all the rotating shafts two 861 to rotate, and finally all the rotating shafts two 861 will rotate synchronously, so that the clamping rubber columns 862 connected to each of them will jointly clamp the extrusion front die 51 or the extrusion rear die 52 inside the extrusion die fixing frame 84.

[0043] like Figure 2 , Figure 3As shown, the lifting frame 87 is a square frame, and the two extrusion die fixing frames 84 are located in the middle of the lifting frame 87. The lifting device 88 includes four guide columns 881 vertically fixed on the cleaning table 81 and sliding through the four corners of the lifting frame 87, two support plates 882 fixedly connected to the upper ends of the two pairs of guide columns 881, and lifting cylinders 883 fixedly installed on the two support plates 882. The piston rod of the lifting cylinder 883 vertically passes through the support plate 882 and is fixedly connected to the lifting frame 87. By adopting the lifting frame 87 with the above structure, the lifting frame 87 can ensure accurate and stable lifting movement; the cleaning table 81 is located below the extrusion die fixing bracket and is provided with an aluminum waste discharge port 812, and the extrusion frame 1 is located below the aluminum waste discharge port 812. An aluminum waste collection box 9 is provided on the side, and a pair of horizontal guide columns 813 are fixedly installed on the cleaning table 81 at the aluminum waste discharge port 812. The guide columns 813 slide vertically through the lower parts of the two extrusion die fixing frames 84 respectively. By adopting the above technical scheme, not only the aluminum waste ejected from the concentrated extrusion front die 51 and the extrusion rear die 52 can be quickly recovered, but also the sliding stability of the extrusion die fixing frame 84 can be further guaranteed; a pair of guide columns 712 are vertically fixedly provided at the bottom of the lifting platform 71, and the guide columns 712 are parallelly located on both sides of the hydraulic telescopic cylinder 73, and vertically slide through the extrusion frame 1. Through the connection structure between the guide columns 712 and the extrusion frame 1, the lifting and lowering stability of the lifting platform 71 can be further guaranteed.

Claims

1. An aluminum extruder, comprising an extrusion frame (1), an extrusion hydraulic device (2) fixedly mounted on the rear of the extrusion frame (1), an extrusion die fixing seat (3) fixedly mounted on the head of the extrusion frame (1), an extrusion barrel seat (4) movably arranged between the extrusion hydraulic device (2) and the extrusion fixing seat, an extrusion die seat (5) slidably mounted on one side of the extrusion die fixing seat (3), and an extrusion front die (51) and an extrusion rear die (52) detachably mounted in the extrusion die seat (5) and fitted front and back, a belt conveyor (6) for moving the extrusion die seat (5) into or out of the extrusion barrel seat (4) and the extrusion fixing seat is installed on the extrusion frame (1), characterized in that: The extrusion machine frame (1) is provided with an extrusion die replacement mechanism (7) and an extrusion die cleaning mechanism (8) on one side of the extrusion die fixing seat (3); The extrusion die replacement mechanism (7) comprises a lifting platform (71) that can be lifted and slid on the extrusion frame (1), a rotating bracket (72) that rotates on the lifting platform (71), a hydraulic telescopic cylinder (73) that is fixed on the extrusion frame (1) and drives the lifting platform (71) to move up and down, and a rotating device (74) that is arranged on the lifting platform (71) and drives the rotating bracket (72) to rotate. The rotating bracket (72) is in an H shape, and one end of the belt conveyor (6) extends into a notch of the rotating bracket (72). The extrusion die cleaning mechanism (8) comprises a cleaning table (81) fixed to an extrusion machine frame (1) and located on one side above a lifting table (71), a second hydraulic telescopic cylinder (82) fixedly mounted on the cleaning table (81), a mold removal device (83) fixed to the front end of a piston rod of the second hydraulic telescopic cylinder (82), a pair of annular extrusion die fixing frames (84) sliding on the cleaning table (81), a moving device (85) driving the two extrusion die fixing frames (84) to move closer to or farther from each other, a clamping and fixing device (86) respectively arranged on opposite sides of the two extrusion die fixing frames (84) and clamping the extrusion die, a lifting frame (87) liftably arranged on the cleaning table (81), a lifting device (88) driving the lifting frame (87) to move up and down, two ejection plates (89) fixed on both sides of the lifting frame (87), and two ejection plates (89) respectively fixed on the two The ejector plate (89) has an aluminum waste material ejector rod (891) on the opposite side of the ejector plate (89), the piston rod of the second hydraulic telescopic cylinder (82) and the mold removal device (83) horizontally pass through the two extrusion die fixing frames (84), and a limiting ring (841) is fixedly arranged on the side of the first hydraulic telescopic cylinder (82) for only the mold removal device (83) to pass through. The clamping and fixing devices (86) of the two extrusion die fixing frames (84) respectively clamp and fix the front extrusion die (51) and the rear extrusion die (52). The two ejector plates (89) are located on the opposite sides of the two extrusion die fixing frames (84), and a gap is left between them for the extrusion die fixing frames (84) to move. The aluminum waste material ejector rods (891) of the two ejector plates (89) respectively correspond to the extrusion holes in the middle of the front extrusion die (51) and the rear extrusion die (52).

2. An aluminum extruder according to claim 1, characterized in that: The rotating device (74) comprises a rotating shaft (741) fixed to the bottom of the rotating bracket (72) and rotatably connected to the lifting platform (71), a worm wheel (742) fixedly mounted on the rotating shaft (741), a worm (743) rotatably mounted on the lifting platform (71) and meshing with the worm wheel (742), and a servo motor (744) fixedly mounted on the lifting platform (71) and having an output end connected to the worm wheel (743); a cavity (711) is provided inside the lifting platform (71); the rotating shaft (741) and the output end of the servo motor (744) are respectively rotated and penetrated into the cavity (711); and the worm wheel (742) and the worm (743) are located in the cavity (711) and mesh with each other for transmission.

3. The aluminum extruder according to claim 1, characterized in that: The mold removal device (83) includes a circular mold removal template (831), a plurality of positioning pins (832) fixed on the mold removal template (831) corresponding to positioning holes of the front extrusion mold (51) and the rear extrusion mold (52), the inner ring of the mold removal template (831) and the extrusion mold fixing frame (84) are coaxial, and the outer diameter of the mold removal template (831) does not exceed the inner diameter of the limiting ring (841).

4. The aluminum extruder according to claim 1, characterized in that: The moving device (85) comprises a rotating shaft (851) rotating on the cleaning table (81) and perpendicular to the piston rod of the hydraulic telescopic cylinder (82), a driving gear (852) fixedly mounted on the middle of the rotating shaft (851), a rack (853) vertically fixed to the side of the template (831) away from the positioning pin (832) and meshing with the driving gear (852), a pair of driven gears (854) respectively fixedly mounted at both ends of the rotating shaft (851), and two extrusion die fixing frames (84) respectively fixedly connected to the two driven gears (854) respectively meshing with the two driven gears (854). Rack 2 (855) and rack 3 (856), the rotating shaft 1 (851) is located between the lifting frame (87) and the hydraulic telescopic cylinder 2 (82), the rack 2 (855) and rack 3 (856) are respectively located on the upper and lower sides of the rotating shaft 1 (851), and are located in front of the hydraulic telescopic cylinder 2 (82) and respectively maintain meshing with the two driven gears 1 (854), and a mounting plate (811) for mounting the hydraulic telescopic cylinder 2 (82) is fixedly arranged on the cleaning table (81), and an opening for the rack 1 (853) to pass through is opened on the mounting plate (811).

5. The aluminum extruder according to claim 1, characterized in that: The lifting frame (87) is a square frame, and the two extrusion die fixing frames (84) are located in the middle of the lifting frame (87). The lifting device (88) includes four guide columns (881) vertically fixed on the cleaning table (81) and sliding through the four corners of the lifting frame (87), two support plates (882) respectively fixedly connected to the upper ends of the two pairs of guide columns (881), and lifting cylinders (883) respectively fixedly installed on the two support plates (882), and the piston rod of the lifting cylinder (883) vertically passes through the support plate (882) and is fixedly connected to the lifting frame (87).

6. The aluminum extruder according to claim 1, characterized in that: The clamping and fixing device (86) includes a plurality of rotating shafts (861) rotatably connected to one side of the extrusion die fixing frame (84), a clamping rubber column (862) fixed to one end of the rotating shaft (861), and a rotating component (863) driving the rotating shaft (861) to rotate, wherein the rotating shaft evenly surrounds the axis of the inner ring of the extrusion die, the clamping rubber column (862) is eccentrically connected to the rotating shaft (861), and the axis of the clamping rubber column (862) is parallel and located above the axis of the rotating shaft (861), a cavity (842) is opened inside the extrusion die fixing frame (84), one end of the rotating shaft (861) rotates and penetrates into the cavity (842), and the rotating component (863) is installed in the cavity (842).

7. An aluminum extruder according to claim 6, characterized in that: The rotating assembly (863) includes a rotating ring (863a) rotating in the cavity and coaxial with the inner ring of the extrusion die fixing frame (84), an outer gear ring (863b) and an inner gear ring (863c) respectively fixed to the inner and outer sides of the rotating ring (863a), a driven gear (863d) rotating on the second rotating shaft (861) and located in the cavity to mesh with the inner gear ring (863c), a guide column (863e) fixed on the lifting frame (87) and parallel to the second rotating shaft (861), a guide sleeve (863f) slidingly sleeved on the guide column (863e), and a rack (863g) fixed to the lower end of the guide sleeve (863f) and vertically penetrated into the second cavity (842) to mesh with the outer gear ring (863b).

8. The aluminum extruder according to claim 1, characterized in that: The cleaning platform (81) is located below the extrusion die fixed bracket and is provided with an aluminum waste discharge port (812); the extrusion frame (1) is located below the aluminum waste discharge port (812) and is provided with an aluminum waste collection box (9); the cleaning platform (81) is located at the aluminum waste discharge port (812) and is fixedly installed with a pair of horizontal guide columns (813) three; the guide columns (813) three vertically slide through the lower parts of the two extrusion die fixed brackets (84) respectively.

9. The aluminum extruder according to claim 1, characterized in that: A pair of guide columns (712) are vertically fixedly arranged at the bottom of the lifting platform (71). The guide columns (712) are parallelly located on both sides of the hydraulic telescopic cylinder (73) and vertically slide through the extrusion frame (1).

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