A passive energy-saving aluminum alloy profile extrusion forming device

Abstract

The present invention discloses a passive energy-saving aluminum alloy profile extrusion forming device, which relates to the technical field of aluminum alloy extrusion forming. The technical problem to be solved is that heat fatigue cracks are likely to occur in a forming die head after long-term use, causing the die to fail prematurely and greatly shortening the service life of the die. The device includes an operating table, on the top surface of which a hydraulic cylinder, an extrusion cylinder assembly, a first support, a second support and an alternating die mechanism are arranged. An inlet channel and a movable channel are opened in the operating table from top to bottom, and a feeding assembly is arranged below the inlet channel. The alternating die mechanism includes a linkage assembly arranged on the side wall of the first support, two die control assemblies arranged on the top surface of the operating table and two impurity removal assemblies. The present invention has the advantages of realizing the alternating use of two forming die heads, without the need to stop the machine for replacement, which not only does not affect the work efficiency, but also can protect the forming die head.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy extrusion forming, and more specifically, to a passive energy-saving aluminum alloy profile extrusion forming device. Background Art

[0002] Passive energy-saving aluminum alloy profiles are a type of aluminum alloy profile products developed to meet the energy-saving requirements of passive buildings. Passive buildings emphasize minimizing the dependence of buildings on active heating and cooling systems through high-efficiency insulation, heat insulation, and airtightness performance. For example, the casement window frames of some residences often use aluminum alloy profiles with hollow rectangular cross-sections. It can cooperate well with other components to form a complete door and window system. The internal space of this cross-sectional shape can be used to set heat insulation strips to achieve the functions of heat insulation and heat preservation. This type of aluminum alloy profile is widely used in door and window frames.

[0003] During the production process of passive energy-saving aluminum alloy profiles, they are usually manufactured using extrusion forming equipment. The heated aluminum rod blank is placed into the extrusion cylinder. Under the powerful pressure provided by the hydraulic system, the extrusion rod advances towards the die. The aluminum rod is subjected to the thrust of the extrusion rod and the restraint of the inner wall of the extrusion cylinder, resulting in plastic deformation and being extruded from the die hole of the die to form an aluminum alloy profile with the same shape as the die hole. However, during the working process of the die, due to contact with the high-temperature aluminum rod blank, the surface temperature rises rapidly. When it is in a high-temperature state for a long time, thermal fatigue cracks are likely to occur on the die surface. These cracks will continue to expand with the use of the die, and may eventually lead to die cracking, causing the die to fail prematurely, greatly shortening the service life of the die. In addition, some aluminum slag is likely to remain in the die, which easily causes defects such as unevenness, pitting, and scratches on the surface of the extruded aluminum alloy profile, reducing the surface finish and aesthetics of the profile and affecting the appearance quality of the product. In view of this, we propose a passive energy-saving aluminum alloy profile extrusion forming device. Summary of the Invention

[0004] The purpose of the present invention is to provide a passive energy-saving aluminum alloy profile extrusion forming device to solve the technical problem that thermal fatigue cracks are easily generated on a forming die head during long-term use, causing the die to fail prematurely and greatly shortening the service life of the die.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A passive energy-saving aluminum alloy profile extrusion forming device, including an operating table, on the top surface of the operating table are arranged a hydraulic cylinder, an extrusion cylinder assembly, a first bracket, a second bracket and an alternating die mechanism. The operating table is provided with a feed channel and an activity channel from top to bottom, and a feed assembly is arranged below the feed channel; The alternating die mechanism includes a linkage assembly arranged on the side wall of the first bracket, two die control assemblies arranged on the top surface of the operating table and two impurity removal assemblies. The two die control assemblies are respectively arranged on both sides of the extrusion cylinder assembly; The die control assembly includes a rotating rod, a fixed block is connected to the circumferential outer wall of the rotating rod, and a moving block is movably sleeved on the circumferential outer wall of the rotating rod; One side wall of the fixed block is detachably connected with an outer die, and a blowing assembly is arranged on the other side wall of the fixed block; An inner die is detachably connected to the side wall of the moving block, and a moving adjustment assembly is arranged below the moving block. The moving adjustment assembly is used to adjust the outer die and the inner die to form a combined state or a separated state. In the combined state, the outer die and the inner die form a forming die head. In the separated state, the impurity removal assembly is used to remove impurities inside the outer die and the inner die; The alternating die mechanism controls the forming die heads of the two die control assemblies to be used alternately through the linkage assembly. During the alternating use process, high-pressure air flow is conveyed into the inner cavity of the extrusion cylinder assembly through the blowing assembly for impurity removal.

[0006] Preferably, the hydraulic cylinder is arranged below the first bracket, and the extrusion cylinder assembly is arranged between the first bracket and the second bracket; The extrusion cylinder assembly includes a first extrusion cylinder and a second extrusion cylinder. The bottoms of the first extrusion cylinder and the second extrusion cylinder are respectively in sliding fit with the top of the operating table. The first extrusion cylinder and the second extrusion cylinder have a combined state and a separated state. In the separated state, a rotating channel is formed between the first extrusion cylinder and the second extrusion cylinder, and the rotating channel is communicated with the activity channel.

[0007] Preferably, the extrusion cylinder assembly further includes a first motor arranged on the top of the first bracket. The output end of the first motor is connected with a bidirectional lead screw. The bidirectional lead screw movably penetrates the side wall of the first bracket and is in rotational fit with the side wall of the second bracket. The side wall of the first bracket and the side wall of the second bracket are connected by a plurality of sliding rods; A transmission block one and a plurality of sliding blocks one are connected to the top of the first extrusion cylinder. The bidirectional lead screw penetrates the side wall of the transmission block one and is in threaded fit. The sliding rod penetrates the sliding block one and is in sliding fit. The top of the second extrusion cylinder is provided with the same structural components as the top of the first extrusion cylinder; A die groove is opened on the side wall of the first extrusion cylinder, and a notch with the same structure as the die groove is opened on the side wall of the second extrusion cylinder. The die groove is used to place the forming die head.

[0008] Preferably, the linkage component includes a second motor arranged on the side wall of the first bracket. The output end of the second motor is connected to a first rotating column. Two identical bevel gears are connected to the outer circumferential wall of the first rotating column. The first rotating column is rotatably arranged on the side wall of the first bracket. Two identical second rotating columns are also rotatably arranged on the side wall of the first bracket. A second bevel gear is connected to the top of the second rotating column. A third bevel gear is connected to the lower end of the outer circumferential wall of the second rotating column. The first bevel gear is meshed and connected with the second bevel gear.

[0009] Preferably, the mold control component includes a plurality of fixing plates connected to the top of the operation table. The rotating rod is rotatably arranged between the two fixing plates. A fourth bevel gear is connected to one end of the rotating rod. The fourth bevel gear is meshed and connected with the third bevel gear. A plurality of long strip convex plates are connected to the outer circumferential wall of the rotating rod. One end of the long strip convex plate is connected to the side wall of the fixed block.

[0010] Preferably, a chute having the same shape as the long strip convex plate is formed in the inner cavity of the moving block. The moving block is slidably matched with the long strip convex plate through the chute. The long strip convex plate is used to drive the moving block to rotate synchronously with the rotating rod. A circular plate is connected to the outer circumferential wall of the moving block. A rotating groove is formed in the outer circumferential wall of the circular plate.

[0011] Preferably, the moving and adjusting component includes a sliding frame, a gear frame and a third motor arranged on the top of the operation table. The output end of the third motor is connected to a fifth gear. The fifth gear is rotatably arranged on the inner side wall of the gear frame. A moving plate is slidably connected to the top of the sliding frame. A plurality of first tooth openings are arranged at the bottom of the moving plate. The first tooth openings are meshed and connected with the fifth gear. A transmission plate is connected to the top of the moving plate. A clamping plate is integrally formed at the top of the transmission plate. The clamping plate is in a semi-circular arc structure. The clamping plate is movably arranged in the rotating groove.

[0012] Preferably, the air blowing assembly includes a support plate connected to the side wall of the fixed block. An air duct is installed on the side wall of the support plate. One end of the air duct is connected to an external air supply device, and the other end of the air duct is connected to a bent pipe. The output end of the bent pipe is movably connected to an inclined nozzle, and an inclined angle is formed between the inclined nozzle and the output end of the bent pipe. Among them, an outer circular plate is connected to the circumferential outer wall of the bent pipe. A first rolling groove is formed in the circumferential inner wall of the outer circular plate. An inner circular plate is movably arranged in the inner cavity of the outer circular plate. A second rolling groove is formed in the circumferential outer wall of the inner circular plate. A plurality of ball bearings are movably arranged between the first rolling groove and the second rolling groove. The inner circular plate is rotationally matched with the outer circular plate through the ball bearings. The inner circular plate is arranged on the outer side wall of the inclined nozzle. A plurality of second tooth openings are also arranged on the outer side wall of the inclined nozzle. The plurality of second tooth openings are arranged in an annular array. A fan chamber is connected to the side wall of the bent pipe. The inner cavity of the fan chamber is communicated with the inner cavity of the bent pipe. A fixed seat is connected to the outer side wall of the outer circular plate. A movable rod penetrates through the side wall of the fixed seat. The movable rod is rotationally matched with the fixed seat. One end of the movable rod penetrates through the side wall of the bent pipe and is in rotational cooperation. A plurality of fan blades are connected to the circumferential outer wall of the movable rod. A sixth gear is connected to the other end of the movable rod. The plurality of fan blades are arranged in the inner cavity of the fan chamber and the inner cavity of the bent pipe. The sixth gear is meshed with the second tooth openings.

[0013] Preferably, the impurity removing assembly includes a pipe rack connected to the top of the operating table. A first square pipe and a second square pipe are arranged on the top of the pipe rack. A plurality of first air blowing openings are arranged on one end side wall of the first square pipe. A plurality of second air blowing openings are arranged on one end side wall of the second square pipe. The first air blowing openings and the second air blowing openings are in opposite directions. The other end of the first square pipe is connected to an external air supply device. The other end of the second square pipe is connected to an external air supply device.

[0014] Preferably, the feeding assembly includes a fixed frame arranged at the bottom of the operating table. A fourth motor is arranged at the bottom of the fixed frame. The output end of the fourth motor is connected to a unidirectional lead screw. The unidirectional lead screw is movably arranged at the bottom of the operating table. A lifting table is threadedly connected to the circumferential outer wall of the unidirectional lead screw. The side wall of the lifting table is slidably matched with the side wall of the fixed frame. A material placing groove is arranged at the top of the lifting table. The material placing groove is an arc-shaped groove structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the present invention, mold control components are respectively arranged on both sides of the extrusion cylinder assembly. After the aluminum rod blank is extruded and formed, when a new aluminum rod blank needs to be transported for continuous extrusion and forming operations, during the feeding process, through the linkage component, the forming die head of one of the mold control components is rotated out of the mold groove, and the forming die head of the other mold control component enters the mold groove to perform the extrusion and forming operation in the next stage. The alternating use of the two forming die heads is realized without stopping the machine for replacement, which not only does not affect the working efficiency but also can protect the forming die head. It solves the problem that when using one forming die head for a long time, thermal fatigue cracks are likely to occur, causing the die to fail prematurely and greatly shortening the service life of the die.

[0017] 2. In the present invention, by designing a impurity removal component, the forming die head in the separated state is rotated to the side of the impurity removal component, so that the first square tube and the second square tube are located between the outer mold and the inner mold. High-pressure air is supplied into the first square tube and the second square tube through an external air supply device. The first square tube blows air into the inner cavity of the inner mold through a plurality of air blowing ports one, and the second square tube blows air into the inner cavity of the outer mold through a plurality of air blowing ports two. During the alternating use of the two forming die heads, maintenance operations can be alternately carried out, that is, one forming die head works while the other forming die head blows air for impurity removal. Through blowing air for impurity removal, not only can the forming die head in the high-temperature state be appropriately cooled to avoid thermal fatigue phenomenon, but also the aluminum slag remaining inside the forming die head can be avoided, which is likely to cause defects such as uneven surface, pitting, and scratching on the surface of the extruded aluminum alloy profile.

[0018] 3. In the present invention, by designing a blowing component, when the first extrusion cylinder and the second extrusion cylinder are in a separated state, when the two rotating rods rotating synchronously and in the same direction rotate by a certain degree, the rotation stops. At this time, the two rotating rods respectively drive the two blowing components to rotate. One of the blowing components rotates into the rotation channel from above the first extrusion cylinder and the second extrusion cylinder, bringing the inclined nozzle into the space between the first extrusion cylinder and the second extrusion cylinder. The other blowing component rotates into the rotation channel from below the movable channel, bringing the other inclined nozzle into the space between the first extrusion cylinder and the second extrusion cylinder. The two inclined nozzles respectively deliver high-pressure air into the inner cavities of the first extrusion cylinder and the second extrusion cylinder, and use the high-pressure air to blow out the impurities in the inner cavities of the first extrusion cylinder and the second extrusion cylinder, achieving the impurity removal effect. It can avoid the frictional wear of the impurities on the forming die head, improve the service life of the forming die head, and also improve the surface finish of the extruded aluminum alloy profile.

[0019] 4. The present invention also designs the inclined nozzle of the blowing component and the output end of the elbow pipe to have an inclined angle. When high-pressure air flow is conveyed into the air duct by an external air supply device, the high-pressure air flow can drive multiple fan blades to rotate, and then drive the movable rod to rotate. By the engagement of gear six and tooth opening two, the movable rod drives the inclined nozzle to rotate through gear six. Affected by the inclined angle, the inclined nozzle forms a rotational swing motion state. Through the rotational swing of the inclined nozzle, multi-angle air flow impact can be carried out on the inner cavities of the first extrusion cylinder and the second extrusion cylinder, improving the impurity removal effect, and driving the rotation of the inclined nozzle by the impact force of the high-pressure air flow, making great use of wind energy without consuming other energy sources.

[0020] 5. In the present invention, when the rotating rod rotates, the long strip convex plate on the circumferential outer wall of the rotating rod can drive the moving block to rotate synchronously with the rotating rod, further enabling the outer mold and the inner mold to form a synchronous motion, making the outer mold and the inner mold in a relatively static state, ensuring the stability of the combined state of the outer mold and the inner mold, that is, maintaining the stability of the forming die head structure.

[0021] 6. The present invention opens a rotating groove on the circumferential outer wall of the ring plate, and integrally forms a semi-circular arc-shaped clamping plate on the top of the transmission plate. The clamping plate is movably arranged in the rotating groove. When the rotating rod rotates to drive the moving block to rotate accordingly, the moving block rotates smoothly on the clamping plate through the rotating groove. When the third motor drives gear five to rotate, gear five drives the moving plate to slide along the top of the sliding frame through tooth opening one. The transmission plate on the top of the moving plate drives the moving block to slide along the long strip convex plate through the clamping plate, making the inner mold away from the outer mold, and the outer mold and the inner mold form a separated state. The moving block can not only rotate following the rotation of the rotating rod, but also slide along the long strip convex plate on the rotating rod through the moving adjustment component, thus realizing two functions. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the structural schematic diagram of the extrusion cylinder assembly of the present invention;

[0024] Figure 3 is the structural schematic diagram of the first extrusion cylinder and the second extrusion cylinder of the present invention;

[0025] Figure 4 is the structural schematic diagram of the alternating mold mechanism of the present invention;

[0026] Figure 5 is the structural schematic diagram of the linkage assembly of the alternating mold mechanism of the present invention;

[0027] Figure 6 is the structural schematic diagram of the mold control assembly of the alternating mold mechanism of the present invention;

[0028] Figure 7 Schematic diagram of the rotating rod structure of the present invention;

[0029] Figure 8 Schematic diagram of the split structure of the moving block and the moving adjustment component of the present invention;

[0030] Figure 9 Schematic diagram of the blowing component structure of the present invention;

[0031] Figure 10 Schematic diagram of the split structure of the blowing component of the present invention;

[0032] Figure 11 Schematic diagram of the sectional structure of the blowing component of the present invention;

[0033] Figure 12 Schematic diagram of the impurity removal component structure of the present invention;

[0034] Figure 13 Schematic diagram of the feeding component structure of the present invention;

[0035] Figure 14 Schematic diagram of a use state of the present invention.

[0036] Explanation of the reference numerals in the figure:

[0037] 1, operating table; 2, hydraulic cylinder; 3, extrusion cylinder assembly; 4, first bracket; 5, second bracket; 6, alternating die mechanism; 7, feeding component;

[0038] 101, feeding channel; 102, movable channel;

[0039] 31, first extrusion cylinder; 32, second extrusion cylinder; 33, first motor; 34, bidirectional lead screw; 35, slide bar;

[0040] 3101, transmission block one; 3102, slider one; 3103, die slot;

[0041] 61, linkage component; 62, die control component; 63, impurity removal component; 621, blowing component; 622, moving adjustment component;

[0042] 6101. Second motor; 6102. First rotating column; 6103. First bevel gear; 6104. Second rotating column; 6105. Second bevel gear; 6106. Third bevel gear; 6201. Rotating rod; 6202. Fixed block; 6203. Moving block; 6204. Outer mold; 6205. Inner mold; 6206. Fixed plate; 6207. Fourth bevel gear; 6208. Long strip convex plate; 6209. Chute; 6210. Ring plate; 6211. Rotating groove; 6301. Pipe support; 6302. First square pipe; 6303. Second square pipe; 6304. First air outlet; 6305. Second air outlet;

[0043] 62101. Support plate; 62102. Air duct; 62103. Elbow pipe; 62104. Inclined spray head; 62105. Outer circular plate; 62106. Ball; 62107. Inner circular plate; 62108. Second tooth opening; 62109. Fan bin; 62110. Fixed seat; 62111. Movable rod; 62112. Fan blade; 62113. Sixth gear; 62201. Slide carriage; 62202. Gear rack; 62203. Third motor; 62204. Fifth gear; 62205. Moving plate; 62206. First tooth opening; 62207. Transmission plate; 62208. Clamping plate;

[0044] 701. Fixed frame; 702. Fourth motor; 703. One-way lead screw; 704. Lifting platform; 705. Feeding groove. Detailed implementation method

[0045] In the first embodiment, as Figures 1 to 14 shown, a passive energy-saving aluminum alloy profile extrusion forming device involved in the present invention includes an operation table 1. A hydraulic cylinder 2, an extrusion cylinder assembly 3, a first support 4, a second support 5, and an alternating die mechanism 6 are arranged on the top surface of the operation table 1. The output end of the hydraulic cylinder 2 is connected with an extrusion rod. An inlet channel 101 and a movable channel 102 are opened in the operation table 1 from top to bottom. An inlet assembly 7 is arranged below the inlet channel 101. In the present invention, an aluminum rod blank is sent into the inlet assembly 7 through an external feeding mechanism. The aluminum rod blank is sent to the output end of the hydraulic cylinder 2 through the inlet assembly 7. By the operation of the hydraulic cylinder 2, the extrusion rod is pushed forward, and the extrusion rod drives the aluminum rod blank into the extrusion cylinder assembly 3 for extrusion forming operation.

[0046] In the embodiment of the present invention, the hydraulic cylinder 2 is arranged below the first support 4, and the extrusion cylinder assembly 3 is arranged between the first support 4 and the second support 5; the extrusion cylinder assembly 3 includes a first extrusion cylinder 31 and a second extrusion cylinder 32. The bottoms of the first extrusion cylinder 31 and the second extrusion cylinder 32 are respectively in sliding fit with the top of the operation table 1. The first extrusion cylinder 31 and the second extrusion cylinder 32 have a combined state and a separated state. In the separated state, a rotation channel is formed between the first extrusion cylinder 31 and the second extrusion cylinder 32, and the rotation channel is communicated with the movable channel 102;

[0047] Specifically, the extrusion cylinder assembly 3 further includes a first motor 33 arranged on the top of the first bracket 4. The output end of the first motor 33 is connected with a bidirectional lead screw 34. The bidirectional lead screw 34 movably penetrates through the side wall of the first bracket 4 and is rotationally matched with the side wall of the second bracket 5. The side walls of the first bracket 4 and the second bracket 5 are connected by a plurality of sliding rods 35. The top of the first extrusion cylinder 31 is connected with a first transmission block 3101 and a plurality of first sliders 3102. The bidirectional lead screw 34 penetrates through the side wall of the first transmission block 3101 and is in threaded cooperation therewith. The sliding rod 35 penetrates through the first slider 3102 and is in sliding cooperation therewith. The top of the second extrusion cylinder 32 is provided with a structural component identical to that of the top of the first extrusion cylinder 31. A die groove 3103 is formed in the side wall of the first extrusion cylinder 31, and a notch with the same structure as the die groove 3103 is formed in the side wall of the second extrusion cylinder 32. The die groove 3103 is used for placing a forming die head. In the present invention, by the operation of the first motor 33, the bidirectional lead screw 34 is driven to rotate, further driving the first extrusion cylinder 31 and the second extrusion cylinder 32 to move towards or away from each other, so that the first extrusion cylinder 31 and the second extrusion cylinder 32 are in a combined state or a separated state.

[0048] In an embodiment of the present invention, the alternating die mechanism 6 includes a linkage assembly 61 arranged on the side wall of the first bracket 4, two die control assemblies 62 arranged on the top surface of the operation table 1, and two impurity removal assemblies 63. The two die control assemblies 62 are respectively arranged on both sides of the extrusion cylinder assembly 3, and the impurity removal assembly 63 is arranged on the side of the die control assembly 62.

[0049] In the present invention, die control assemblies 62 are respectively arranged on both sides of the extrusion cylinder assembly 3. When the aluminum bar billet is extruded and formed, in order to convey a new aluminum bar billet to continue the extrusion and forming operation, during the feeding period, the forming die head of one of the die control assemblies 62 is controlled by the linkage assembly 61 to rotate out of the die groove 3103, and the forming die head of the other die control assembly 62 enters the die groove 3103 to perform the extrusion and forming operation in the next stage, realizing the alternating use of the two forming die heads, solving the problem that heat fatigue cracks are likely to occur when using one forming die head for a long time, causing the die to fail in advance and greatly shortening the service life of the die.

[0050] In an embodiment of the present invention, the linkage assembly 61 includes a second motor 6101 disposed on the side wall of the first bracket 4. The output end of the second motor 6101 is connected to a first rotating column 6102. Two identical bevel gears 6103 are connected to the outer circumferential wall of the first rotating column 6102. The first rotating column 6102 is rotatably disposed on the side wall of the first bracket 4. Two identical second rotating columns 6104 are also rotatably disposed on the side wall of the first bracket 4. A second bevel gear 6105 is connected to the top of the second rotating column 6104. A third bevel gear 6106 is connected to the lower end of the outer circumferential wall of the second rotating column 6104. The first bevel gear 6103 is meshed and connected with the second bevel gear 6105.

[0051] Further, the mold control assembly 62 includes a rotating rod 6201. A fixing block 6202 is connected to the outer circumferential wall of the rotating rod 6201. A moving block 6203 is movably sleeved on the outer circumferential wall of the rotating rod 6201. The mold control assembly 62 also includes a plurality of fixing plates 6206 connected to the top of the operating table 1. The rotating rod 6201 is rotatably disposed between the two fixing plates 6206. A fourth bevel gear 6207 is connected to one end of the rotating rod 6201. The fourth bevel gear 6207 is meshed and connected with the third bevel gear 6106. An outer mold 6204 is detachably connected to one side wall of the fixing block 6202. A blowing assembly 621 is disposed on the other side wall of the fixing block 6202. An inner mold 6205 is detachably connected to the side wall of the moving block 6203. A moving adjustment assembly 622 is disposed below the moving block 6203. In the present invention, when the first extrusion cylinder 31 and the second extrusion cylinder 32 are in a separated state, the second motor 6101 works to drive the first rotating column 6102 to rotate. The first rotating column 6102 drives the two second bevel gears 6105 to rotate respectively through the two first bevel gears 6103. The two second bevel gears 6105 drive the two second rotating columns 6104 to rotate respectively. The two second rotating columns 6104 drive the two fourth bevel gears 6207 to rotate respectively through the third bevel gears 6106, further enabling the two rotating rods 6201 to rotate synchronously in the same direction, achieving the linkage effect of the two rotating rods 6201.

[0052] In an embodiment of the present invention, the moving adjustment assembly 622 is used to adjust the outer mold 6204 and the inner mold 6205 to form a combined state or a separated state. In the combined state, the outer mold 6204 and the inner mold 6205 form a molding die head. In the separated state, the inside of the outer mold 6204 and the inner mold 6205 is cleaned by the impurity removal assembly 63. The alternating mold mechanism 6 controls the molding die heads of the two mold control assemblies 62 to be used alternately through the linkage assembly 61. During the alternating use process, high-pressure air is conveyed into the inner cavity of the extrusion cylinder assembly 3 through the blowing assembly 621 for impurity removal.

[0053] As another embodiment of the present invention, a plurality of long strip convex plates 6208 are connected to the circumferential outer wall of the rotating rod 6201, and one end of the long strip convex plate 6208 is connected to the side wall of the fixed block 6202; a chute 6209 having the same shape as the long strip convex plate 6208 is provided in the inner cavity of the moving block 6203, and the moving block 6203 is slidably engaged with the long strip convex plate 6208 through the chute 6209. The long strip convex plate 6208 is used to drive the moving block 6203 to rotate synchronously with the rotating rod 6201; a ring plate 6210 is connected to the circumferential outer wall of the moving block 6203, and a rotating groove 6211 is provided on the circumferential outer wall of the ring plate 6210; in the present invention, when the rotating rod 6201 rotates, the long strip convex plate 6208 on the circumferential outer wall of the rotating rod 6201 can drive the moving block 6203 to rotate synchronously with the rotating rod 6201, further enabling the outer mold 6204 and the inner mold 6205 to form a synchronous movement, so that the outer mold 6204 and the inner mold 6205 are in a relatively static state, ensuring the stability of the combined state of the outer mold 6204 and the inner mold 6205, that is, maintaining the stability of the forming die head structure;

[0054] Further, the moving adjustment component 622 includes a carriage 62201, a gear rack 62202, and a third motor 62203 arranged on the top of the operation table 1; a fifth gear 62204 is connected to the output end of the third motor 62203, and the fifth gear 62204 is rotatably arranged on the inner side wall of the gear rack 62202; a moving plate 62205 is slidably connected to the top of the carriage 62201, and a plurality of first tooth openings 62206 are provided at the bottom of the moving plate 62205, and the first tooth openings 62206 are meshed with the fifth gear 62204; a transmission plate 62207 is connected to the top of the moving plate 62205, and a clamping plate 62208 is integrally formed on the top of the transmission plate 62207. The clamping plate 62208 has a semi-circular arc structure, and the clamping plate 62208 is movably arranged in the rotating groove 6211; in the present invention, a rotating groove 6211 is opened on the circumferential outer wall of the circular plate 6210, and a clamping plate 62208 with a semi-circular arc structure is integrally formed on the top of the transmission plate 62207. The clamping plate 62208 is movably arranged in the rotating groove 6211. When the rotating rod 6201 rotates to drive the moving block 6203 to rotate accordingly, the moving block 6203 rotates on the clamping plate 62208 through the rotating groove 6211, so that the rotation of the moving block 6203 is smooth. When the third motor 62203 drives the fifth gear 62204 to rotate, the fifth gear 62204 drives the moving plate 62205 to slide along the top of the carriage 62201 through the first tooth openings 62206. The transmission plate 62207 on the top of the moving plate 62205 drives the moving block 6203 to slide along the long strip convex plate 6208 through the clamping plate 62208, so that the inner mold 6205 moves away from the outer mold 6204, and the outer mold 6204 and the inner mold 6205 are in a separated state. The moving block 6203 can not only rotate following the rotation of the rotating rod 6201, but also slide along the long strip convex plate 6208 on the rotating rod 6201 through the moving adjustment component 622, thereby realizing two functions.

[0055] As another embodiment of the present invention, the air blowing assembly 621 includes a support plate 62101 connected to the side wall of the fixed block 6202. An air duct 62102 is installed on the side wall of the support plate 62101. One end of the air duct 62102 is connected to an external air supply device, and the other end of the air duct 62102 is connected to an elbow 62103. The output end of the elbow 62103 is movably connected to an inclined nozzle 62104, and the inclined nozzle 62104 forms an inclined angle with the output end of the elbow 62103. Among them, an outer circular plate 62105 is connected to the outer circumferential wall of the elbow 62103. A first rolling groove is provided on the inner circumferential wall of the outer circular plate 62105. An inner circular plate 62107 is movably arranged in the inner cavity of the outer circular plate 62105. A second rolling groove is provided on the outer circumferential wall of the inner circular plate 62107. A plurality of balls 62106 are movably arranged between the first rolling groove and the second rolling groove. The inner circular plate 62107 is rotationally matched with the outer circular plate 62105 through the balls 62106. The inner circular plate 62107 is arranged on the outer side wall of the inclined nozzle 62104. A plurality of second tooth openings 62108 are also arranged on the outer side wall of the inclined nozzle 62104. The plurality of second tooth openings 62108 are arranged in an annular array. A fan chamber 62109 is connected to the side wall of the elbow 62103. The inner cavity of the fan chamber 62109 is communicated with the inner cavity of the elbow 62103. A fixed seat 62110 is connected to the outer side wall of the outer circular plate 62105. A movable rod 62111 penetrates through the side wall of the fixed seat 62110. The movable rod 62111 is rotationally matched with the fixed seat 62110. One end of the movable rod 62111 penetrates through the side wall of the elbow 62103 and is in rotational cooperation. A plurality of fan blades 62112 are connected to the outer circumferential wall of the movable rod 62111. The other end of the movable rod 62111 is connected to a sixth gear 62113. The plurality of fan blades 62112 are arranged in the inner cavity of the fan chamber 62109 and the inner cavity of the elbow 62103. The sixth gear 62113 is meshed with the second tooth openings 62108.

[0056] By designing the air blowing assembly 621 in the present invention, when the first extrusion cylinder 31 and the second extrusion cylinder 32 are in a separated state, when the two rotating rods 6201 rotating synchronously and in the same direction rotate 90 degrees, the rotation stops. At this time, the two rotating rods 6201 respectively drive the two air blowing assemblies 621 to rotate. One of the air blowing assemblies 621 rotates from above the first extrusion cylinder 31 and the second extrusion cylinder 32 into the rotation channel, bringing the inclined nozzle 62104 between the first extrusion cylinder 31 and the second extrusion cylinder 32. The other air blowing assembly 621 rotates from below the movable channel 102 into the rotation channel, bringing the other inclined nozzle 62104 between the first extrusion cylinder 31 and the second extrusion cylinder 32. The two inclined nozzles 62104 respectively deliver high-pressure air flow into the inner cavities of the first extrusion cylinder 31 and the second extrusion cylinder 32, using the high-pressure air flow to blow out the impurities in the inner cavities of the first extrusion cylinder 31 and the second extrusion cylinder 32, achieving the impurity removal effect, avoiding frictional wear of the impurities on the forming die head, improving the service life of the forming die head, and also improving the surface smoothness of the extruded aluminum alloy profile.

[0057] The present invention also designs the inclined nozzle 62104 of the air blowing assembly 621 and the output end of the elbow pipe 62103 to have an inclined angle. When the high-pressure air flow is conveyed into the air pipe 62102 by an external air supply device, the high-pressure air flow can drive a plurality of fan blades 62112 to rotate, and then drive the movable rod 62111 to rotate. By using the meshing of gear six 62113 and tooth opening two 62108, the movable rod 62111 drives the inclined nozzle 62104 to rotate through gear six 62113. Affected by the inclined angle, the inclined nozzle 62104 forms a rotational swinging motion state. Through the rotational swinging of the inclined nozzle 62104, the inner cavities of the first extrusion cylinder 31 and the second extrusion cylinder 32 can be subjected to multi-angle air flow impact, improving the impurity removal effect, and driving the rotation of the inclined nozzle 62104 by the impact force of the high-pressure air flow, making great use of wind energy without consuming other energy sources.

[0058] As another embodiment of the present invention, the impurity removal assembly 63 includes a pipe rack 6301 connected to the top of the operation table 1. A first square pipe 6302 and a second square pipe 6303 are arranged on the top of the pipe rack 6301. A plurality of first air blowing openings 6304 are provided on one side wall of one end of the first square pipe 6302, and a plurality of second air blowing openings 6305 are provided on one side wall of one end of the second square pipe 6303. The first air blowing openings 6304 and the second air blowing openings 6305 are in opposite directions. The other end of the first square pipe 6302 is connected to an external air supply device, and the other end of the second square pipe 6303 is connected to an external air supply device;

[0059] The present invention designs the impurity removal assembly 63 to rotate the forming die head in the separated state to the side of the impurity removal assembly 63, so that the first square pipe 6302 and the second square pipe 6303 are located between the outer die 6204 and the inner die 6205. By conveying high-pressure air flow into the first square pipe 6302 and the second square pipe 6303 through an external air supply device, the first square pipe 6302 blows air into the inner cavity of the inner die 6205 through a plurality of first air blowing openings 6304 to remove impurities, and the second square pipe 6303 blows air into the inner cavity of the outer die 6204 through a plurality of second air blowing openings 6305 to remove impurities. During the alternate use of the two forming die heads, maintenance operations can be alternately performed, that is, one forming die head works while the other forming die head is blown to remove impurities. By blowing to remove impurities, it can not only appropriately cool the forming die head in a high-temperature state to avoid thermal fatigue phenomena, but also avoid the aluminum slag remaining inside the forming die head, which easily causes defects such as uneven surfaces, pitting, and scratches on the extruded aluminum alloy profiles.

[0060] As another embodiment of the present invention, the feeding assembly 7 includes a fixing frame 701 arranged at the bottom of the operating table 1. A fourth motor 702 is arranged at the bottom of the fixing frame 701. The output end of the fourth motor 702 is connected to a unidirectional lead screw 703. The unidirectional lead screw 703 is movably arranged at the bottom of the operating table 1. A lifting table 704 is threadedly connected to the circumferential outer wall of the unidirectional lead screw 703. The side wall of the lifting table 704 is slidably matched with the side wall of the fixing frame 701. A material placing groove 705 is arranged at the top of the lifting table 704. The material placing groove 705 is an arc-shaped groove structure.

[0061] Embodiment 2. This embodiment provides a method for using a passive energy-saving aluminum alloy profile extrusion forming device, including the following steps:

[0062] S1. Extrusion forming operation: Feed the heated aluminum rod blank into the material placing groove 705 through an external feeding mechanism. By operating the fourth motor 702, drive the unidirectional lead screw 703 to rotate, so that the lifting table 704 rises. The lifting table 704 feeds the aluminum rod blank in the material placing groove 705 into the output end of the hydraulic cylinder 2 through the feeding channel 101. Utilize the operation of the hydraulic cylinder 2 to push the extrusion rod forward. The extrusion rod drives the aluminum rod blank into the extrusion cylinder assembly 3. The aluminum rod blank is extruded and formed from the die hole of the forming die head to form an aluminum alloy profile with a hollow rectangular cross-section.

[0063] S2. Alternately use the molds. After the aluminum bar billet is extruded and formed, a new aluminum bar billet needs to be conveyed to continue the extrusion forming operation. During the feeding period, the first motor 33 works to drive the rotation of the bidirectional lead screw 34, further driving the first extrusion cylinder 31 and the second extrusion cylinder 32 to move away from each other, so that the first extrusion cylinder 31 and the second extrusion cylinder 32 are in a separated state. Then, the second motor 6101 works to drive the rotation of the first rotating column 6102. The first rotating column 6102 drives the rotation of two second bevel gears 6105 through two first bevel gears 6103 respectively. The two second bevel gears 6105 drive the rotation of two second rotating columns 6104 respectively. The two second rotating columns 6104 drive the rotation of two fourth bevel gears 6207 through third bevel gears 6106 respectively, further enabling the two rotating rods 6201 to rotate synchronously and in the same direction. The rotation of the rotating rod 6201 drives the moving block 6203 to rotate accordingly. One of the rotating rods 6201 takes out the formed die head in the die groove 3103, and the other rotating rod 6201 brings another formed die head into the die groove 3103. Then, through the combination of the first extrusion cylinder 31 and the second extrusion cylinder 32, the formed die head is clamped and fixed, and the extrusion forming operation is carried out according to the operation of S1. In this way, when it is necessary to convey a new aluminum bar billet again to continue the extrusion forming operation, the first extrusion cylinder 31 and the second extrusion cylinder 32 are made to be in a separated state again. Then, through the reverse rotation of the second motor 6101, the formed die head in the die groove 3103 is taken out by the rotating rod 6201 rotating in the reverse direction, and another rotating rod 6201 rotating synchronously and in the reverse direction brings another formed die head into the die groove 3103. In this way, the cycle repeats to achieve the alternate use of the two formed die heads;

[0064] S3. Perform impurity removal operations on the first extrusion cylinder and the second extrusion cylinder. According to the operation of S2, when the first extrusion cylinder 31 and the second extrusion cylinder 32 are in a separated state, when the two rotating rods 6201 rotating synchronously and in the same direction rotate 90 degrees, they stop rotating. At this time, the two rotating rods 6201 drive the rotation of two blowing assemblies 621 respectively. One of the blowing assemblies 621 rotates into the rotation channel from above the first extrusion cylinder 31 and the second extrusion cylinder 32, bringing the inclined nozzle 62104 between the first extrusion cylinder 31 and the second extrusion cylinder 32. The other blowing assembly 621 rotates into the rotation channel from below the movable channel 102, bringing another inclined nozzle 62104 between the first extrusion cylinder 31 and the second extrusion cylinder 32. The two inclined nozzles 62104 respectively convey high-pressure airflows into the inner cavities of the first extrusion cylinder 31 and the second extrusion cylinder 32, and use the high-pressure airflows to blow out the impurities in the inner cavities of the first extrusion cylinder 31 and the second extrusion cylinder 32 to achieve the impurity removal effect;

[0065] S4. Separation operation of the forming die head. When the rotating rod 6201 rotates 90 degrees, the forming die head is taken out of the die groove 3103 by the rotating rod 6201. At this time, the third motor 62203 drives the fifth gear 62204 to rotate. The fifth gear 62204 drives the moving plate 62205 to slide along the top of the carriage 62201 through the first tooth opening 62206. The transmission plate 62207 on the top of the moving plate 62205 drives the moving block 6203 to slide along the long strip convex plate 6208 through the clamping plate 62208, so that the inner die 6205 moves away from the outer die 6204, and the outer die 6204 and the inner die 6205 are in a separated state;

[0066] S5. Alternate maintenance operation of the die. During the impurity removal operation of S3, the forming die head taken out of the die groove 3103 by the rotating rod 6201 is adjusted to a separated state through the operation of S4. After the impurity removal operation of S3 is completed, through the continuous rotation of the two rotating rods 6201, the forming die head in the combined state is rotated into the die groove 3103 for extrusion work. The forming die head in the separated state is rotated to the side of the impurity removal component 63, so that the first square tube 6302 and the second square tube 6303 are located between the outer die 6204 and the inner die 6205. High-pressure air is supplied into the first square tube 6302 and the second square tube 6303 through an external air supply device. The first square tube 6302 blows air into the inner cavity of the inner die 6205 through a plurality of first air blowing openings 6304, and the second square tube 6303 blows air into the inner cavity of the outer die 6204 through a plurality of second air blowing openings 6305, so that during the alternate use of the two forming die heads, alternate maintenance operations can be carried out.

[0067] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A passive energy-saving aluminum alloy profile extrusion forming device, characterized in that It includes an operating table (1), on the top surface of which a hydraulic cylinder (2), an extrusion cylinder assembly (3), a first bracket (4), a second bracket (5) and an alternating die mechanism (6) are arranged. The operating table (1) is provided with a feeding channel (101) and a movable channel (102) from top to bottom, and a feeding assembly (7) is arranged below the feeding channel (101). The alternating die mechanism (6) includes a linkage assembly (61) arranged on the side wall of the first bracket (4), two die control assemblies (62) and two impurity removal assemblies (63) arranged on the top surface of the operating table (1). The two die control assemblies (62) are respectively arranged on both sides of the extrusion cylinder assembly (3). The die control assembly (62) includes a rotating rod (6201), a fixed block (6202) is connected to the outer circumferential wall of the rotating rod (6201), and a moving block (6203) is movably sleeved on the outer circumferential wall of the rotating rod (6201). An outer die (6204) is detachably connected to one side wall of the fixed block (6202), and a blowing assembly (621) is arranged on the other side wall of the fixed block (6202). An inner die (6205) is detachably connected to the side wall of the moving block (6203), and a moving adjustment assembly (622) is arranged below the moving block (6203). The moving adjustment assembly (622) is used to adjust the outer die (6204) and the inner die (6205) to form a combined state or a separated state. In the combined state, the outer die (6204) and the inner die (6205) form a forming die head. In the separated state, the inside of the outer die (6204) and the inner die (6205) is cleaned by the impurity removal assembly (63). The alternating die mechanism (6) controls the forming die heads of the two die control assemblies (62) to be used alternately through the linkage assembly (61). During the alternating use process, high-pressure air flow is conveyed into the inner cavity of the extrusion cylinder assembly (3) through the blowing assembly (621) for impurity removal.

2. The passive energy-saving aluminum alloy profile extrusion forming equipment according to claim 1, characterized in that, The hydraulic cylinder (2) is arranged below the first bracket (4), and the extrusion cylinder assembly (3) is arranged between the first bracket (4) and the second bracket (5). The extrusion cylinder assembly (3) includes a first extrusion cylinder (31) and a second extrusion cylinder (32). The bottoms of the first extrusion cylinder (31) and the second extrusion cylinder (32) are respectively slidably matched with the top of the operating table (1). The first extrusion cylinder (31) and the second extrusion cylinder (32) have a combined state and a separated state. In the separated state, a rotating channel is formed between the first extrusion cylinder (31) and the second extrusion cylinder (32), and the rotating channel is communicated with the movable channel (102).

3. A passive energy-saving aluminum alloy profile extrusion forming device according to claim 2, characterized in that, The extrusion cylinder assembly (3) further includes a first motor (33) arranged on the top of the first bracket (4). The output end of the first motor (33) is connected to a bidirectional lead screw (34). The bidirectional lead screw (34) movably penetrates through the side wall of the first bracket (4) and is rotationally matched with the side wall of the second bracket (5). The side walls of the first bracket (4) and the second bracket (5) are connected by a plurality of sliding rods (35). A first transmission block (3101) and a plurality of first sliders (3102) are connected to the top of the first extrusion cylinder (31). The bidirectional lead screw (34) penetrates through the side wall of the first transmission block (3101) and is in threaded fit. The sliding rod (35) penetrates through the first slider (3102) and is in sliding fit. The top of the second extrusion cylinder (32) is provided with a structural component identical to that of the top of the first extrusion cylinder (31). A die groove (3103) is formed in the side wall of the first extrusion cylinder (31). A notch having the same structure as the die groove (3103) is formed in the side wall of the second extrusion cylinder (32). The die groove (3103) is used to place the forming die head.

4. A passive energy-saving aluminum alloy profile extrusion forming device according to claim 3, characterized in that, The linkage assembly (61) includes a second motor (6101) arranged on the side wall of the first bracket (4). The output end of the second motor (6101) is connected to a first rotating column (6102). Two identical bevel gears one (6103) are connected to the circumferential outer wall of the first rotating column (6102). The first rotating column (6102) is rotatably arranged on the side wall of the first bracket (4). Two identical second rotating columns (6104) are also rotatably arranged on the side wall of the first bracket (4). A bevel gear two (6105) is connected to the top of the second rotating column (6104). A bevel gear three (6106) is connected to the bottom end of the circumferential outer wall of the second rotating column (6104). The bevel gear one (6103) is meshed and connected with the bevel gear two (6105).

5. A passive energy-saving aluminum alloy profile extrusion forming device according to claim 4, characterized in that, The die control assembly (62) includes a plurality of fixing plates (6206) connected to the top of the operation table (1). The rotating rod (6201) is rotatably arranged between the two fixing plates (6206). A bevel gear four (6207) is connected to one end of the rotating rod (6201). The bevel gear four (6207) is meshed and connected with the bevel gear three (6106). A plurality of long strip convex plates (6208) are connected to the circumferential outer wall of the rotating rod (6201). One end of the long strip convex plate (6208) is connected to the side wall of the fixed block (6202).

6. The passive energy-saving aluminum alloy profile extrusion forming equipment according to claim 5, characterized in that, A chute (6209) having the same shape as the long strip convex plate (6208) is formed in the inner cavity of the moving block (6203). The moving block (6203) is in sliding fit with the long strip convex plate (6208) through the chute (6209). The long strip convex plate (6208) is used to drive the moving block (6203) to rotate synchronously with the rotating rod (6201). A ring plate (6210) is connected to the circumferential outer wall of the moving block (6203). A rotating groove (6211) is formed in the circumferential outer wall of the ring plate (6210).

7. A passive energy-saving aluminum alloy profile extrusion forming device according to claim 6, characterized in that, The mobile adjustment component (622) includes a carriage (62201), a gear rack (62202), and a third motor (62203) arranged on the top of the operation table (1); A fifth gear (62204) is connected to the output end of the third motor (62203), and the fifth gear (62204) is rotatably arranged on the inner side wall of the gear rack (62202); A moving plate (62205) is slidably connected to the top of the carriage (62201), and a plurality of first tooth openings (62206) are arranged at the bottom of the moving plate (62205), and the first tooth openings (62206) are meshed with the fifth gear (62204); A transmission plate (62207) is connected to the top of the moving plate (62205), a clamping plate (62208) is integrally formed on the top of the transmission plate (62207), the clamping plate (62208) is in a semi-circular arc structure, and the clamping plate (62208) is movably arranged in the rotating groove (6211).

8. A passive energy-saving aluminum alloy profile extrusion forming device according to claim 7, characterized in that, The air blowing component (621) includes a support plate (62101) connected to the side wall of the fixed block (6202), an air duct (62102) is installed on the side wall of the support plate (62101), one end of the air duct (62102) is connected to an external air supply device, the other end of the air duct (62102) is connected to an elbow pipe (62103), the output end of the elbow pipe (62103) is movably connected to an inclined nozzle (62104), and the inclined nozzle (62104) forms an inclined angle with the output end of the elbow pipe (62103); Wherein, an outer circular plate (62105) is connected to the circumferential outer wall of the elbow pipe (62103), a first rolling groove is opened on the circumferential inner wall of the outer circular plate (62105), an inner circular plate (62107) is movably arranged in the inner cavity of the outer circular plate (62105), a second rolling groove is opened on the circumferential outer wall of the inner circular plate (62107), and a plurality of balls (62106) are movably arranged between the first rolling groove and the second rolling groove, and the inner circular plate (62107) is rotationally matched with the outer circular plate (62105) through the balls (62106); The inner circular plate (62107) is arranged on the outer side wall of the inclined nozzle (62104), and a plurality of second tooth openings (62108) are also arranged on the outer side wall of the inclined nozzle (62104), and the plurality of second tooth openings (62108) are arranged in an annular array; A fan chamber (62109) is connected to the side wall of the elbow pipe (62103). The inner cavity of the fan chamber (62109) communicates with the inner cavity of the elbow pipe (62103). A fixing seat (62110) is connected to the outer side wall of the outer circular plate (62105). A movable rod (62111) penetrates through the side wall of the fixing seat (62110). The movable rod (62111) is rotationally matched with the fixing seat (62110). One end of the movable rod (62111) penetrates through the side wall of the elbow pipe (62103) and is in rotational fit. A plurality of fan blades (62112) are connected to the circumferential outer wall of the movable rod (62111). The other end of the movable rod (62111) is connected to a sixth gear (62113). A plurality of the fan blades (62112) are arranged in the inner cavity of the fan chamber (62109) and the inner cavity of the elbow pipe (62103). The sixth gear (62113) is meshed and connected with the second tooth opening (62108).

9. A passive energy-saving aluminum alloy profile extrusion forming device according to claim 8, characterized in that, The impurity removal assembly (63) includes a pipe rack (6301) connected to the top of the operating table (1). A first square pipe (6302) and a second square pipe (6303) are arranged on the top of the pipe rack (6301). A plurality of first air blowing openings (6304) are arranged on the side wall of one end of the first square pipe (6302). A plurality of second air blowing openings (6305) are arranged on the side wall of one end of the second square pipe (6303). The first air blowing openings (6304) and the second air blowing openings (6305) are in opposite directions. The other end of the first square pipe (6302) is connected to an external air supply device. The other end of the second square pipe (6303) is connected to an external air supply device.

10. A passive energy-saving aluminum alloy profile extrusion forming device according to claim 9, characterized in that, The feeding assembly (7) includes a fixing frame (701) arranged at the bottom of the operating table (1). A fourth motor (702) is arranged at the bottom of the fixing frame (701). The output end of the fourth motor (702) is connected to a unidirectional lead screw (703). The unidirectional lead screw (703) is movably arranged at the bottom of the operating table (1). A lifting table (704) is threadedly connected to the circumferential outer wall of the unidirectional lead screw (703). The side wall of the lifting table (704) is slidably matched with the side wall of the fixing frame (701). A material placing groove (705) is arranged at the top of the lifting table (704). The material placing groove (705) is an arc-shaped groove structure.

Images