Preparation method of high-strength aluminum alloy

Abstract

The invention relates to the technical field of aluminum alloy preparation, in particular to a high-strength aluminum alloy preparation method which comprises the preparation steps of material preparation, smelting, casting, hot working and heat treatment. According to the aluminum alloy plate rolling device, the two rollers are provided with the multiple partition plates, the multiple rolling areas can be partitioned on the rollers through the partition plates, the two sides of aluminum alloy are blocked through the partition plates, and the positions of the partition plates can be adjusted according to rolling requirements, so that when aluminum alloy plates of different sizes are rolled, the rollers do not need to be replaced, and rapid rolling is facilitated; the inner side faces of the partition plates are rotationally connected with the rotating plates, when the adjusting mechanisms enable the rollers to rotate with the axes of the rotating plates as the centers, the distance between the two rollers can be adjusted, rolling of the aluminum alloy plates with different thicknesses can be conveniently adapted, the multiple chain belts are arranged, the aluminum alloy plates can be limited through the chain belts, and the rolling efficiency is improved. The aluminum alloy plate can be aligned to the middle portions of the two partition plates through the chain belts.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy preparation, in particular to a method for preparing a high-strength aluminum alloy. Background Art

[0002] Aluminum alloy is a material made by adding one or more alloying elements to pure aluminum, such as adding metal elements such as copper, manganese, magnesium, silicon, and zinc to aluminum. The addition of alloying elements can significantly improve the tensile strength, processing properties, and corrosion resistance of aluminum, thereby forming a high-strength aluminum alloy.

[0003] In the preparation process of high-strength aluminum alloy, it is usually necessary to go through steps such as material melting and casting. After the aluminum alloy is cast, it is usually necessary to undergo hot processing, such as rolling, to change the shape and structure of the aluminum alloy. When the existing rolling equipment is in use, in order to roll the aluminum alloy plates to the corresponding width, grooves are sometimes set on the rollers. The aluminum alloy plates are rolled through the grooves of the rollers, and the width of the aluminum alloy plates after rolling is limited by the grooves. However, the length of the roller grooves is usually fixed. Therefore, when the aluminum alloy plates need to be rolled into different widths, the corresponding rollers need to be replaced. The weight of the rollers is relatively large, and replacement is more troublesome. Summary of the invention

[0004] The object of the present invention is to provide a method for preparing a high-strength aluminum alloy to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A method for preparing a high-strength aluminum alloy includes the steps of material preparation - smelting - casting - hot working - heat treatment, and the specific steps are as follows:

[0007] Step (1) Material preparation: preparing aluminum ingots, and adding other metal elements into the aluminum ingots according to preparation requirements;

[0008] Step (2) smelting: placing the aluminum ingot into a furnace and heating it to melt it into liquid;

[0009] Step (3) casting: conveying the molten aluminum liquid into a casting device and casting it into a shape through the casting device;

[0010] Step (4) hot processing: conveying the cast aluminum alloy to a rolling device, hot rolling the aluminum alloy through the rolling device, and further processing the aluminum alloy into a desired shape and thickness;

[0011] Step (5) heat treatment: quenching the aluminum alloy to improve the mechanical properties of the aluminum alloy.

[0012] Furthermore, when preparing materials in step (1), alloy elements are prepared in a certain proportion according to demand, and in step (2), the alloy elements are put into a furnace together with the aluminum ingot for melting.

[0013] Preferably, during the smelting process of step (2), the aluminum alloy is refined and degassed to remove impurities and gases in the melt.

[0014] Preferably, the rolling device in step (4) comprises:

[0015] A rolling module, used for rolling aluminum alloy, the rolling module comprises a fixed shell, the bottom surface of the fixed shell is fixedly connected to a support column, two rollers, two driving mechanisms, two adjusting mechanisms and a positioning mechanism are arranged inside the fixed shell, the two rollers are located between the two driving mechanisms, the two driving mechanisms are located between the two adjusting mechanisms, the driving mechanism is used to drive the rollers to rotate, the adjusting mechanism is used to adjust the distance between the two rollers, the two rollers are provided with a plurality of partitions, the positioning mechanism is used to fix the position of the partition, the inner side surface of the partition is rotatably connected to a rotating plate, the inner side surface of the rotating plate is rotatably connected to a connecting ring that is slidably connected to the side surface of the roller;

[0016] A limiting module is arranged on one side of the rolling module, and is used to limit the position of the aluminum alloy;

[0017] A roller conveyor 1 is arranged inside the limit module, and the roller conveyor 1 is used to convey unrolled aluminum alloy;

[0018] The second roller conveyor is arranged on the other side of the rolling module, and the second roller conveyor is used for conveying the rolled aluminum alloy.

[0019] Furthermore, the inner side surfaces of both ends of the roller are fixedly connected to rectangular frames, the inner side surfaces of the rectangular frames are slidably connected to rectangular rod 1, and the side surface of the rectangular rod 1 is fixedly connected to a return spring fixedly connected to the inner side surface of the rectangular frame;

[0020] The driving mechanism comprises:

[0021] A fixed frame, located inside the fixed shell;

[0022] A connecting frame, slidably connected to the inner side of the fixed frame;

[0023] Two transmission rods, corresponding to two rollers respectively, are arranged inside the connection frame, a worm gear is fixedly sleeved on the side of the transmission rod, the inner side of the transmission rod is slidably connected to a side of an adjacent rectangular rod, and the side of the transmission rod is rotatably connected to two limit blocks slidably connected to the inner side of the fixed frame;

[0024] The drive motor is fixedly connected to the bottom surface of the connection frame.

[0025] The second rectangular rod is rotatably connected inside the connection frame, and the output end of the driving motor is transmission-connected to the bottom end of the second rectangular rod;

[0026] A sliding seat, corresponding to a transmission rod, is slidably connected to the inner side of the connection frame, and the side surface of the sliding seat is fixedly connected to the side surface of the adjacent limit block;

[0027] The transmission shaft is rotatably connected to the inner side surface of the sliding seat, the inner side surface of the transmission shaft is slidably connected to the two side surfaces of the rectangular rod, and the side surface of the transmission shaft is fixedly connected with a worm that meshes with the adjacent worm wheel for transmission.

[0028] Furthermore, the adjustment mechanism comprises:

[0029] An adjusting frame is fixedly connected to a side surface of the fixing frame;

[0030] Two adjustment plates are rotatably connected to the inner side of the adjustment frame, and the side of the adjustment plate is fixedly connected to a transmission gear ring;

[0031] Two positioning blocks are rotatably connected to the inner sides of the two adjustment plates, respectively, the axes of the positioning blocks are staggered with the axes of the adjustment plates, and the sides of the positioning blocks are fixedly connected to the ends of the adjacent transmission rods;

[0032] The two rotating shafts are both rotatably connected to the inner side of the adjusting frame, and the side of the rotating shaft is fixedly sleeved with a transmission gear meshing with an adjacent transmission gear ring.

[0033] Furthermore, the positioning mechanism comprises:

[0034] Two positioning frames are fixedly connected inside the fixed shell, one fixed frame and one adjusting frame are fixedly connected between the two positioning frames, and another fixed frame and another adjusting frame are slidably connected between the two positioning frames, and the inner side of the positioning frame is slidably connected with a plurality of positioning seats slidably connected with adjacent partitions;

[0035] Two positioning screw rods are respectively arranged inside the two positioning frames. The positioning screw rods pass through the interior of the fixed shell, and the ends of the positioning screw rods are screwed and connected with the inner side surfaces of the positioning frames. The positioning screw rods are screwed and connected with the inner side surfaces of the adjacent positioning seats.

[0036] Furthermore, the positioning mechanism further comprises:

[0037] Two connecting screw rods are rotatably connected to the inner side surfaces of the two positioning frames respectively, and the side surfaces of the connecting screw rods are rotatably connected to the inner side surface of the fixed shell;

[0038] Two connecting blocks are respectively slidably connected inside the two positioning frames, the opposite surfaces of the two connecting blocks are fixedly connected to the side of another adjusting frame, and the inside of the connecting block is screwed and connected to the side of the adjacent connecting screw rod;

[0039] The two toothed belt wheels are respectively fixedly sleeved on the two connecting screw rods, and the toothed belt wheels are located inside the fixed shell. The two toothed belt wheels are connected through a toothed belt transmission.

[0040] Preferably, a power mechanism is provided at the bottom of the fixed shell;

[0041] The power mechanism comprises:

[0042] Two fixing frames, both of which have top ends slidably connected to the inner side of the fixing shell, the top end of one fixing frame passes through the inside of the toothed belt on the toothed belt pulley 1, the top end of the fixing frame is fixedly connected to the side of the adjacent adjustment frame, the top of the inner side of the fixing frame is rotatably connected to a linkage rod 1, one end of the linkage rod 1 is transmission-connected to the end of an adjacent rotating shaft, the bottom of the inner side of the fixing frame is rotatably connected to a linkage rod 2, the side of the linkage rod 1 and the side of the linkage rod 2 are both fixedly sleeved with pulleys, and the two pulleys are connected through belt transmission;

[0043] Two sleeve frames are respectively fixedly connected to the bottoms of the opposite surfaces of the two fixing frames, and the two sleeve frames are slidably connected to each other;

[0044] A stepper motor is fixedly connected to the bottom of a side of a fixed frame, and the output end of the stepper motor is drivingly connected to the two ends of the adjacent linkage rod;

[0045] A rectangular rod three is fixedly connected to a linkage rod two;

[0046] The sleeve rod is fixedly connected to another linkage rod 2, and the three side surfaces of the rectangular rod are slidably connected to the inner side surface of the sleeve rod.

[0047] Preferably, the limiting module includes:

[0048] Two side frames are respectively arranged on both sides of the roller conveyor, two fixing columns are fixedly connected to the bottom surface of the side frame, a sliding frame is slidably connected to the inner side surface of the side frame away from the rolling module, a retaining screw passing through the inside of the sliding frame is screwed and connected to the inner side surface of the side frame, and a power motor is fixedly connected to the side surface of one side frame;

[0049] Two side rods, with a plurality of connecting seats slidably connected to the side surfaces, both ends of one side rod are rotatably connected to the inner side surfaces of the adjacent side frames, and both ends of the other side rod are rotatably connected to the inner side surfaces of the adjacent sliding frames, the output end of the power motor is transmission-connected to the end of one side rod, both ends of the side rods are fixedly sleeved with two toothed belt wheels, and the two toothed belt wheels corresponding to the same side frame are connected through toothed belt transmission, the inner side surfaces of the connecting seats are fixedly connected with sliding blocks slidably connected to the side surfaces of the side rods, the inner side surfaces of the connecting seats are provided with sprockets, and the inner side surfaces of the connecting seats are screwed and connected with abutment screws in contact with the side surfaces of the side rods;

[0050] A plurality of chain belts are all transmission-connected to two adjacent sprocket wheels.

[0051] Furthermore, the limit module also includes a support plate, the side surface of the support plate is fixedly connected to the side surface of the fixed column, one side of the top surface of the support plate is fixedly connected to a support rod fixedly connected to the bottom surface of a roller conveyor, and the other side of the top surface of the support plate is fixedly connected to two support frames, the inner sides of the two support frames are slidably connected with a U-shaped rod one and a U-shaped rod two, the top surface of the U-shaped rod one is in contact with the bottom surface of a roller conveyor, and the two opposite surfaces of the U-shaped rod one and the U-shaped rod two are fixedly connected with racks, the inner side surface of the support frame is located between the two racks and is rotatably connected with a connecting shaft, the side surface of the connecting shaft is fixedly sleeved with a linkage gear meshing with two adjacent racks, and the top surface of the support plate is fixedly connected to a hydraulic rod that is transmission-connected to the bottom end of the U-shaped rod one.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] 1. A number of partitions are arranged between two rolls, and a number of rolling areas can be separated on the rolls by the partitions. The aluminum alloy can be conveyed between the two rolls, and the two sides of the aluminum alloy can be blocked by the partitions. The partitions can slide on the rolls, and the positions of the partitions can be adjusted according to the needs of rolling. In this way, when rolling aluminum alloy plates of different sizes, there is no need to replace the rolls, which is conducive to the rapid rolling. In addition, the number of partitions on the rolls can be increased or decreased according to the number of aluminum alloy plates to be rolled, which is more flexible to use.

[0054] 2. A rotating plate is connected to the inner side of the partition plate, and the axis of the rotating plate is staggered with the axis of the roller. In this way, when the adjusting mechanism makes the roller rotate with the axis of the rotating plate as the center, the distance between the two rollers can be adjusted to adapt to the rolling of aluminum alloy plates with different thicknesses. Before the rolling starts, the distance between the two rollers can be equal to the thickness of the aluminum alloy plate. After the aluminum alloy plate enters between the two rollers, the distance between the two rollers can be gradually reduced, so that the aluminum alloy can be quickly inserted between the two rollers. After the aluminum alloy plate passes through between the two rollers, the aluminum alloy plate can be moved in the opposite direction to be inserted between the two rollers. Since the thickness of the tail of the aluminum alloy plate is equal to the distance between the two rollers, the aluminum alloy plate can be smoothly inserted between the two rollers, and the aluminum alloy plate is thoroughly rolled by the two rollers to make the thickness of each part of the aluminum alloy plate uniform.

[0055] 3. By setting up a number of chain belts, the aluminum alloy plates can be transported by a roller conveyor, and the aluminum alloy plates can be limited by the chain belts so that the aluminum alloy plates can be smoothly inserted between the corresponding two partitions. When it is necessary to extend both sides of the aluminum alloy plates to increase the width of the aluminum alloy plates, the aluminum alloy plates can be aligned with the middle of the two partitions by the chain belts so that the aluminum alloy plates can be evenly extended on both sides during the rolling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1It is a schematic flow chart of the method of the present invention;

[0057] Figure 2 It is a schematic diagram of the overall structure of the rolling device in the present invention;

[0058] Figure 3 It is a schematic diagram of the rolling module structure in the present invention;

[0059] Figure 4 It is a schematic diagram of the internal structure of the fixed shell in the present invention;

[0060] Figure 5 It is a partial structural schematic diagram of the rolling module in the present invention;

[0061] Figure 6 It is a schematic diagram of the partition structure in the present invention;

[0062] Figure 7 It is a schematic diagram of the roller structure in the present invention;

[0063] Figure 8 It is a schematic diagram of the internal structure of the roller in the present invention;

[0064] Fig. 9 It is a schematic diagram of the internal structure of the driving mechanism in the present invention;

[0065] Fig.10 It is a schematic diagram of the internal structure of the regulating mechanism in the present invention;

[0066] Fig.11 It is a schematic diagram of the internal structure of the power mechanism in the present invention;

[0067] Fig.12 It is a schematic diagram of the structure of the limit module in the present invention;

[0068] Fig.13 It is a schematic diagram of the internal structure of the support frame in the present invention;

[0069] Fig.14 It is a schematic diagram of the side rod structure in the present invention;

[0070] Fig.15 It is a schematic diagram of the internal top view of the side frame in the present invention.

[0071] In the figure: 100, rolling module; 110, fixed shell; 111, support column; 120, roller; 121, rectangular frame; 122, rectangular rod 1; 123, return spring; 130, partition; 131, rotating plate; 132, connecting ring; 133, positioning screw; 140, driving mechanism; 141, fixed frame; 142, connecting frame; 143, transmission rod; 1431, worm gear; 1432, limit block; 145 , driving motor; 146, rectangular rod 2; 147, sliding seat; 148, transmission shaft; 1481, worm; 150, adjustment mechanism; 151, adjustment frame; 152, adjustment plate; 1521, transmission gear ring; 153, positioning block; 154, rotating shaft; 1541, transmission gear; 160, positioning mechanism; 161, positioning frame; 1611, positioning seat; 162, positioning screw rod; 164, connecting screw rod; 165 , connecting block; 166, toothed pulley 1; 170, power mechanism; 171, fixed frame; 1711, linkage rod 1; 1712, linkage rod 2; 1713, pulley; 172, sleeve frame; 173, stepping motor; 174, rectangular rod 3; 175, sleeve rod; 200, limit module; 210, side frame; 211, fixed column; 212, sliding frame; 213, power motor; 214, locking screw; 220, Side rod; 221, connecting seat; 222, abutting screw; 223, sliding block; 224, sprocket; 225, toothed pulley 2; 230, chain belt; 240, support plate; 241, support rod; 242, support frame; 243, U-shaped rod 1; 244, U-shaped rod 2; 245, rack; 246, connecting shaft; 247, linkage gear; 248, hydraulic rod; 300, roller conveyor 1; 400, roller conveyor 2. DETAILED DESCRIPTION

[0072] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0073] See also Figure 1 In an embodiment of the present invention, a method for preparing a high-strength aluminum alloy includes the steps of material preparation - smelting - casting - hot working - heat treatment, and the specific steps are as follows:

[0074] Step (1) Material preparation: preparing aluminum ingots, and adding other metal elements into the aluminum ingots according to preparation requirements;

[0075] Step (2) smelting: placing the aluminum ingot into a furnace and heating it to melt it into liquid;

[0076] Step (3) casting: conveying the molten aluminum liquid into a casting device and casting it into a shape through the casting device;

[0077] Step (4) hot processing: conveying the cast aluminum alloy to a rolling device, hot rolling the aluminum alloy through the rolling device, and further processing the aluminum alloy into a desired shape and thickness;

[0078] Step (5) heat treatment: quenching the aluminum alloy to improve the mechanical properties of the aluminum alloy.

[0079] When preparing materials in step (1), alloy elements are prepared in a certain proportion according to demand, and in step (2), the alloy elements and aluminum ingots are put into a furnace for melting; during the smelting process of step (2), the aluminum alloy is refined and degassed to remove impurities and gases in the melt.

[0080] Specifically, corresponding metal elements, such as copper, manganese, magnesium, silicon, zinc, etc., can be added to the aluminum ingot according to preparation needs. The aluminum ingot and the alloy elements are placed in a furnace together and stirred evenly after melting. During smelting, refining and degassing treatments can be performed to improve the purity of the alloy and remove impurities and gases in the melt. During casting, a continuous casting machine can be selected.

[0081] Embodiment 1

[0082] like Figure 2-6 As shown, in this embodiment, the rolling device in step (4) includes a rolling module 100, a limiting module 200, a roller conveyor 1 300, and a roller conveyor 2 400;

[0083] The rolling module 100 is used for rolling aluminum alloy. The rolling module 100 includes a fixed shell 110. The bottom surface of the fixed shell 110 is fixedly connected to a support column 111. Two rollers 120, two driving mechanisms 140, two adjusting mechanisms 150 and a positioning mechanism 160 are arranged inside the fixed shell 110. The two rollers 120 are located between the two driving mechanisms 140. The two driving mechanisms 140 are located between the two adjusting mechanisms 150. The driving mechanism 140 is used to drive the rollers 120 to rotate. The adjusting mechanism 150 is used to adjust the two rollers 1 20, two rollers 120 are provided with a plurality of partitions 130, the partitions 130 can separate a plurality of rolling areas on the rollers 120, the positioning mechanism 160 is used to fix the position of the partitions 130, the inner side of the partitions 130 is rotatably connected to a rotating plate 131, the inner side of the rotating plate 131 is rotatably connected to a connecting ring 132 which is slidably connected to the side of the roller 120, the connecting ring 132 can rotate relative to the rotating plate 131, and the connecting ring 132 can slide along the surface of the roller 120, so that the roller 120 can rotate and move relative to the rotating plate 131;

[0084] The limiting module 200 is arranged on one side of the rolling module 100, and the limiting module 200 is used to limit the position of the aluminum alloy; the roller conveyor 1 300 is arranged inside the limiting module 200, and the roller conveyor 1 300 is used to convey the unrolled aluminum alloy; the roller conveyor 2 400 is arranged on the other side of the rolling module 100, and the roller conveyor 2 400 is used to convey the rolled aluminum alloy.

[0085] During specific implementation, the unrolled aluminum alloy plates can be conveyed by the limiting module 200, and the position of the aluminum alloy plates can be limited by the roller conveyor 300. The aluminum alloy plates can be aligned between two adjacent partitions 130, and the roller 120 can be rotated by the driving mechanism 140. After the aluminum alloy is conveyed between the two rollers 120, the aluminum alloy plates can be rolled by the two rollers 120. The partitions 130 block the two sides of the aluminum alloy, and the partitions 130 can slide on the rollers 120. The position of the partitions 130 is adjusted according to the needs of rolling, and then the position of the partitions 130 is limited by the positioning mechanism 160. In this way, when rolling aluminum alloy plates of different sizes, there is no need to replace the rollers 120, which is conducive to rapid rolling. In addition, the number of partitions 130 on the rollers 120 can be increased or decreased according to the number of aluminum alloy plates to be rolled, and it is more flexible to use.

[0086] like Figure 7-9 As shown, in this embodiment, the inner side surfaces of both ends of the roller 120 are fixedly connected to a rectangular frame 121, the inner side surface of the rectangular frame 121 is slidably connected to a rectangular rod 122, and the side surface of the rectangular rod 122 is fixedly connected to a return spring 123 fixedly connected to the inner side surface of the rectangular frame 121;

[0087] The driving mechanism 140 includes a fixed frame 141, a connecting frame 142, two transmission rods 143, a driving motor 145, a rectangular rod 146, a rectangular rod 146, a sliding seat 147, and a transmission shaft 148;

[0088] The fixed frame 141 is located inside the fixed shell 110, the connecting frame 142 is slidably connected to the inner side of the fixed frame 141, and two transmission rods 143 are respectively arranged inside the connecting frame 142 corresponding to the two rollers 120. The side of the transmission rod 143 is fixedly sleeved with a worm gear 1431, and the inner side of the transmission rod 143 is slidably connected to the side of the adjacent rectangular rod 122. Under the action of the reset spring 123, the rectangular rod 122 can be kept inserted into the adjacent transmission rod 143. The side of the transmission rod 143 is rotatably connected to two limit blocks 1432 that are slidably connected to the inner side of the fixed frame 141. The driving motor 145 is fixedly connected to the bottom surface of the connecting frame 142, and the rectangular rod 146 is rotatably connected to the inside of the connecting frame 142. The output end of the driving motor 145 is transmission-connected to the bottom end of the rectangular rod 146, and the sliding seat 147 corresponds to a transmission rod 143 slidably connected to the inner side of the connecting frame 142, the side of the sliding seat 147 is fixedly connected to the side of the adjacent limit block 1432, the limit block 1432 can drive the sliding seat 147 to slide up and down along the inside of the connecting frame 142, the limit block 1432 can limit the position of the transmission rod 143 to prevent the transmission rod 143 from tilting, the transmission shaft 148 is rotatably connected to the inner side of the sliding seat 147, the inner side of the transmission shaft 148 is slidably connected to the side of the rectangular rod 146, the side of the transmission shaft 148 is fixedly connected with a worm 1481 meshing with the adjacent worm wheel 1431, the sliding seat 147 can limit the position of the worm 1481 through the transmission shaft 148, so that the worm wheel 1431 keeps meshing with the adjacent worm 1481, and the transmission shaft 148 can slide up and down along the rectangular rod 146.

[0089] During specific implementation, the driving motor 145 can drive the rectangular rod 146 to rotate, the rectangular rod 146 can drive the transmission shaft 148 to rotate, the transmission shaft 148 can drive the transmission rod 143 to rotate through the worm 1481 and the worm wheel 1431, the transmission rod 143 can drive the rectangular rod 122 to rotate, the rectangular rod 122 can drive the roller 120 to rotate through the rectangular frame 121, so that one roller 120 can rotate, and the transmission shaft 148 of one driving mechanism 140 can be set next to the top transmission rod 143, and the transmission shaft 148 of another driving mechanism 140 can be set next to the bottom transmission rod 143, so that the top roller 120 can be driven to rotate by one driving mechanism 140, and the bottom roller 120 can be driven to rotate by another driving mechanism 140, and the rotation directions of the two rollers 120 are opposite, so that the two rollers 120 are rotated to roll the aluminum alloy plate.

[0090] like Fig.10 As shown, in this embodiment, the adjustment mechanism 150 includes an adjustment frame 151, two adjustment plates 152, two positioning blocks 153, and two rotating shafts 154;

[0091] The adjusting frame 151 is fixedly connected to the side of the fixed frame 141, the two adjusting plates 152 are both rotatably connected to the inner side of the adjusting frame 151, the side of the adjusting plate 152 is fixedly connected with a transmission gear ring 1521, the two positioning blocks 153 are respectively rotatably connected to the inner sides of the two adjusting plates 152, the axis of the positioning block 153 is staggered from the axis of the adjusting plate 152, the side of the positioning block 153 is fixedly connected to the end of the adjacent transmission rod 143, the two rotating shafts 154 are both rotatably connected to the inner side of the adjusting frame 151, and the side of the rotating shaft 154 is fixedly sleeved with a transmission gear 1541 meshing with the adjacent transmission gear ring 1521.

[0092] In a specific implementation, when the transmission rod 143 rotates, the positioning block 153 can be rotated in the adjustment plate 152, and the adjustment plate 152 can support the roller 120 through the positioning block 153. The two rotating shafts 154 can rotate synchronously through the transmission gear 1541. When the rotating shaft 154 rotates, the rotating shaft 154 can drive the adjacent transmission gear ring 1521 to rotate through the transmission gear 1541, so that the adjustment plate 152 rotates. The axes of the adjustment plate 152 and the positioning block 153 are staggered. When the adjustment plate 152 rotates, it can drive the positioning block 153 The positioning block 153 can drive the transmission rod 143 to rotate around the axis of the adjustment plate 152, thereby rotating the roller 120 and rotating the rotating plate 131 in the partition 130, so that the distance between the two rollers 120 can be adjusted, so that the roller 120 can adapt to the rolling requirements of aluminum alloy plates of different thicknesses. When the transmission rod 143 rotates, the transmission rod 143 can move up and down relative to the connecting frame 142, and the transmission rod 143 can push the connecting frame 142 to move through the limit block 1432, so that the connecting frame 142 can translate inside the fixed frame 141;

[0093] Before rolling begins, the spacing between the two rollers 120 can be adjusted so that the distance between the two rollers 120 is equal to the thickness of the aluminum alloy plate. In this way, the aluminum alloy can be quickly inserted between the two rollers 120. After the aluminum alloy plate enters between the two rollers 120, the spacing between the two rollers 120 can be gradually reduced to extrude the aluminum alloy plate. After the aluminum alloy plate passes between the two rollers 120, the aluminum alloy plate can be reversely conveyed by the roller conveyor 2400 to move the aluminum alloy plate in the opposite direction to be inserted between the two rollers 120. Since the thickness of the tail of the aluminum alloy plate is equal to the spacing between the two rollers 120, the aluminum alloy plate can be smoothly inserted between the two rollers 120. The aluminum alloy plate is rolled again by the two rollers 120 to extrude the surface of the aluminum alloy flat, so that the thickness of each part of the aluminum alloy plate is uniform, and the aluminum alloy can be repeatedly passed between the two rollers 120 to gradually reduce the thickness of the aluminum alloy plate.

[0094] like Figure 4As shown, in this embodiment, the positioning mechanism 160 includes two positioning frames 161, two positioning screw rods 162, two connecting screw rods 164, two connecting blocks 165, and two toothed pulleys 166;

[0095] The two positioning frames 161 are both fixedly connected inside the fixed shell 110, the sides of one fixed frame 141 and one adjusting frame 151 are both fixedly connected between the two positioning frames 161, and the other fixed frame 141 and the other adjusting frame 151 are both slidably connected between the two positioning frames 161, the inner side of the positioning frame 161 is slidably connected with a plurality of positioning seats 1611 slidably connected with the adjacent partitions 130, the positioning seats 1611 only translate along the length direction of the positioning frame 161, the two positioning screw rods 162 are respectively arranged inside the two positioning frames 161, the positioning screw rods 162 pass through the fixed shell 110, and the ends of the positioning screw rods 162 are screwed together with the inner side of the positioning frame 161, and the positioning screw rods 162 are screwed together with the inner side of the adjacent positioning seats 1611;

[0096] The two connecting screws 164 are respectively rotatably connected to the inner side surfaces of the two positioning frames 161, and the side surfaces of the connecting screws 164 are rotatably connected to the inner side surfaces of the fixed shell 110. The two connecting blocks 165 are respectively slidably connected to the inside of the two positioning frames 161. The opposite surfaces of the two connecting blocks 165 are fixedly connected to the side surfaces of another adjustment frame 151. The inside of the connecting block 165 is screwed and connected to the side surfaces of the adjacent connecting screws 164. The two toothed belt pulleys 166 are respectively fixedly sleeved on the two connecting screws 164, and the toothed belt pulleys 166 are located inside the fixed shell 110. The two toothed belt pulleys 166 are connected through a toothed belt transmission.

[0097] During specific implementation, after the positioning screw rod 162 passes through the side wall of the fixed shell 110 and is screwed into a plurality of positioning seats 1611, the end of the positioning screw rod 162 can be screwed into the interior of the positioning frame 161, so that the position of the positioning seat 1611 can be limited by the positioning screw rod 162, and the positioning seat 1611 can limit the position of the partition 130, thereby fixing the partition 130, and the positioning screw rod 162 can be rotated to disengage the end of the positioning screw rod 162 from the interior of the positioning frame 161, and the positioning screw rod 162 is disengaged from the positioning seat 1611, and the positioning screw rod 162 is pulled out from the interior of the positioning frame 161, so that the position of the partition 130 can be adjusted as needed, and the top connecting screw rod 164 can be rotated, and the top connecting screw rod 164 can drive the bottom connecting screw rod 164 to rotate through the toothed belt wheel 166, and when the connecting screw rod 164 rotates, the connecting block 165 can move along the interior of the positioning frame 161, and the connecting block 165 can drive the adjustment The frame 151 moves, and the adjusting frame 151 can drive the fixed frame 141 to move, so that the other adjusting mechanism 150 and the other driving mechanism 140 move away from the roller 120, so that the transmission rod 143 of the other driving mechanism 140 is disengaged from the adjacent rectangular rod 122, and then the other driving mechanism 140 is separated from the end of the roller 120. At this time, the partition 130 can be moved toward the other driving mechanism 140 to disengage the partition 130 from the roller 120, and then the partition 130 is taken out from the opening of the fixed shell 110, or a new partition 130 is inserted into the fixed shell 110 from the opening of the fixed shell 110, and then the partition 130 is inserted on the roller 120. In this way, the number of partitions 130 can be increased or decreased as needed, and multiple aluminum alloy plates with smaller widths can be rolled on the roller 120 at the same time, and the roller 120 can be taken out from between the two rollers 120 as needed to disassemble the roller 120;

[0098] A positioning screw 133 that contacts the side of the top rotating plate 131 can be screwed in at the top of the partition 130. After loosening the positioning screw 133, the top rotating plate 131 can be rotated arbitrarily inside the partition 130 to adjust the spacing between the rollers 120. When the spacing between the two rollers 120 is adjusted to the maximum, the other driving mechanism 140 is moved away from the rollers 120, and the positioning screw 133 can be tightened to make the positioning screw 133 rest on the rotating plate 131, thereby limiting the rotation of the top rotating plate 131 and maintaining the angle of the top rotating plate 131 to support the top roller 120, while the bottom connecting ring 132 can directly support the bottom roller 120, thereby facilitating the increase or decrease of the number of partitions 130.

[0099] Embodiment 2

[0100] Based on the first embodiment, Figure 12-15 As shown, in this embodiment, the limiting module 200 includes two side frames 210, two side rods 220, and a plurality of chain belts 230;

[0101] Two side frames 210 are respectively arranged on both sides of the roller conveyor 300, two fixing columns 211 are fixedly connected to the bottom surface of the side frame 210, a sliding frame 212 is slidably connected to the inner side surface of the side frame 210 away from the rolling module 100, and a retaining screw 214 passing through the inside of the sliding frame 212 is screwed and connected to the inner side surface of the side frame 210, and a power motor 213 is fixedly connected to the side surface of one side frame 210;

[0102] The two side rods 220 are slidably connected to a plurality of connecting seats 221, both ends of one side rod 220 are rotationally connected to the inner side of the adjacent side frame 210, and both ends of the other side rod 220 are rotationally connected to the inner side of the adjacent sliding frame 212, the output end of the power motor 213 is transmission-connected to the end of one side rod 220, both ends of the side rod 220 are fixedly sleeved with a toothed belt pulley 225, and the two toothed belt pulleys 225 corresponding to the same side frame 210 are connected through a toothed belt transmission, the inner side surface of the connecting seat 221 is fixedly connected to a sliding block 223 slidably connected to the side of the side rod 220, the inner side surface of the connecting seat 221 is provided with a sprocket 224, the inner side surface of the connecting seat 221 is screwed and connected to abutment screws 222 that contact the side of the side rod 220, and a plurality of chain belts 230 are transmission-connected to two adjacent sprocket wheels 224.

[0103] During specific implementation, the locking screw 214 can fix the sliding frame 212 on the side frame 210, the locking screw 214 can pass through the adjacent toothed belt, the sliding block 223 can slide in the groove on the side rod 220, and the abutting screw 222 can abut on the side rod 220, so as to fix the connecting seat 221 on the side rod 220, the power motor 213 can drive one side rod 220 to rotate, and one side rod 220 can drive the other side rod 220 to rotate through the toothed belt pulley 225, and the side rod 220 can drive the sliding block 223 to rotate through the groove thereon, and the sliding block 223 can drive the connecting seat 221 to rotate, and the connecting seat 221 can drive the corresponding chain belt 230 to rotate through the sprocket 224. When the aluminum alloy plate is placed on On the limiting module 200, when the aluminum alloy plate is conveyed through the limiting module 200, the chain belt 230 can position the side of the edge of the aluminum alloy sheet metal, and the chain belt 230 can move with the aluminum alloy plate. Through the limitation of the aluminum alloy plate by the chain belt 230, the aluminum alloy plate can be aligned between two adjacent partitions 130, and when it is necessary to extend both sides of the aluminum alloy plate to increase the width of the aluminum alloy plate, the aluminum alloy plate can be aligned with the middle of the two partitions 130 through the chain belt 230, so that the aluminum alloy plate is conducive to the uniform extension of both sides of the aluminum alloy plate during the rolling process. After loosening the abutting screws 222, the position of the connecting seat 221 can be adjusted, thereby adjusting the position of the chain belt 230 according to the position of the partition 130.

[0104] like Figure 12-13As shown, in the present embodiment, the limiting module 200 also includes a support plate 240, the side surface of the support plate 240 is fixedly connected to the side surface of the fixed column 211, one side of the top surface of the support plate 240 is fixedly connected to a support rod 241 fixedly connected to the bottom surface of the roller conveyor 300, and the other side of the top surface of the support plate 240 is fixedly connected to two support frames 242, the inner sides of the two support frames 242 are slidably connected to a U-shaped rod 1 243 and a U-shaped rod 244, the top surface of the U-shaped rod 1 243 contacts the bottom surface of the roller conveyor 300, and the opposite sides of the U-shaped rod 1 243 and the U-shaped rod 244 are fixedly connected to racks 245, the inner side surface of the support frame 242 is located between the two racks 245 and is rotatably connected to a connecting shaft 246, and the side surface of the connecting shaft 246 is fixedly sleeved with a linkage gear 247 meshing with two adjacent racks 245 for transmission, and the top surface of the support plate 240 is fixedly connected to a hydraulic rod 248 that is transmission-connected to the bottom end of the U-shaped rod 1 243.

[0105] During specific implementation, the support rod 241 can support one side of the roller conveyor 300, and the hydraulic rod 248 can support the other side of the roller conveyor 300 through the U-shaped rod 243. After loosening the abutment screw 222, the positioning screw 214 can be loosened to move the sliding frame 212 toward the inside of the side frame 210, so that the chain belt 230 can be loosened, and then the chain belt 230 can be moved between the U-shaped rod 1 243 and the U-shaped rod 244. At this time, the U-shaped rod 243 can be moved downward by the hydraulic rod 248, and the U-shaped rod 243 can drive the rack 245 thereon to move downward, thereby toggling the linkage gear 247 to rotate, and the linkage gear The wheel 247 can move the U-shaped rod 244 upward through the rack 245, so that the U-shaped rod 243 can be moved downward to separate from the roller conveyor 300, and the U-shaped rod 244 can be moved upward to support the roller conveyor 300, and then the chain belt 230 can be moved out of the range of the roller conveyor 300 from the other side of the roller conveyor 300, so that the chain belt 230 can be moved to the side of the roller conveyor 300 for standby, or a new chain belt 230 can be moved from the other side of the roller conveyor 300 to the roller conveyor 300, thereby increasing or decreasing the number of chain belts 230 on the roller conveyor 300 as needed.

[0106] In the present invention, if Fig.11 As shown, a power mechanism 170 is disposed at the bottom of the fixed shell 110;

[0107] The power mechanism 170 includes two fixing frames 171, two sleeve frames 172, a stepping motor 173, a rectangular rod 174, and a sleeve rod 175;

[0108] The top ends of the two fixing frames 171 are both slidably connected to the inner side of the fixing shell 110. The fixing frames 171 can slide relative to the fixing shell 110. The top end of one fixing frame 171 passes through the inside of the toothed belt on the toothed belt wheel 166. The positioning screw 162 is staggered with the fixing frame 171. The top end of the fixing frame 171 is fixedly connected to the side of the adjacent adjustment frame 151. The top of the inner side of the fixing frame 171 is rotatably connected to a linkage rod 1711. One end of the linkage rod 1711 is transmission-connected to the end of an adjacent rotating shaft 154. The fixing frame 171 The bottom of the inner side surface is rotatably connected with a linkage rod 2 1712, and the side surfaces of the linkage rod 1 1711 and the linkage rod 2 1712 are fixedly sleeved with pulleys 1713, and the two pulleys 1713 are connected through belt transmission, and the two sleeve frames 172 are respectively fixedly connected to the bottoms of the opposite surfaces of the two fixed frames 171, and the two sleeve frames 172 are slidably connected to each other, and the side surface of one sleeve frame 172 is slidably connected to the inner side surface of the other sleeve frame 172, and the inner side surface of the other sleeve frame 172 can support the sleeve rod 175;

[0109] The stepper motor 173 is fixedly connected to the bottom of the side of a fixed frame 171, and the output end of the stepper motor 173 is transmission-connected to the end of the adjacent linkage rod 2 1712, the rectangular rod 3 174 is fixedly connected to one linkage rod 2 1712, the sleeve rod 175 is fixedly connected to the other linkage rod 2 1712, and the side of the rectangular rod 3 174 is slidingly connected to the inner side of the sleeve rod 175.

[0110] During specific implementation, the rectangular rod three 174 can slide inside the sleeve rod 175, the stepper motor 173 can drive the adjacent linkage rod two 1712 to rotate, and the linkage rod two 1712 can drive the rectangular rod three 174 to rotate. The cross-section of the rectangular rod three 174 is rectangular. The rectangular rod three 174 can drive the sleeve rod 175 to rotate, and the sleeve rod 175 can drive another linkage rod two 1712 to rotate. The linkage rod two 1712 can drive the linkage rod one 1711 to rotate through the pulley 1713, and the linkage rod one 1711 can drive the corresponding rotating shaft 154 to rotate, thereby adjusting the spacing between the two rollers 120. When a driving mechanism 140 moves, it can drive a fixed frame 171 to move, thereby extending the two sleeve frames 172 and making the rectangular rod three 174 slide inside the sleeve rod 175. A reduction box can be set between the stepper motor 173 and a linkage rod two 1712, so that the stepper motor 173 drives a linkage rod two 1712 to rotate through the reduction box.

[0111] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0112] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for preparing a high-strength aluminum alloy, characterized in that: It includes the preparation steps of material preparation - melting - casting - hot working - heat treatment. The specific steps are as follows: Step (1) Material preparation: preparing aluminum ingots, and adding other metal elements into the aluminum ingots according to preparation requirements; Step (2) smelting: placing the aluminum ingot into a furnace and heating it to melt it into liquid; Step (3) casting: conveying the molten aluminum liquid into a casting device and casting it into a shape through the casting device; Step (4) hot processing: conveying the cast aluminum alloy to a rolling device, hot rolling the aluminum alloy through the rolling device, and further processing the aluminum alloy into a desired shape and thickness; Step (5) heat treatment: quenching the aluminum alloy to improve the mechanical properties of the aluminum alloy.

2. The method for preparing a high-strength aluminum alloy according to claim 1, characterized in that: When preparing materials in step (1), alloy elements are prepared in a certain proportion according to demand, and in step (2), the alloy elements and aluminum ingots are put into a furnace for melting.

3. The method for preparing a high-strength aluminum alloy according to claim 1, characterized in that: During the smelting process of step (2), the aluminum alloy is refined and degassed to remove impurities and gases in the melt.

4. The method for preparing a high-strength aluminum alloy according to claim 1, characterized in that: The rolling device in step (4) comprises: A rolling module (100) is used for rolling aluminum alloys. The rolling module (100) comprises a fixed shell (110). The bottom surface of the fixed shell (110) is fixedly connected to a support column (111). Two rollers (120), two driving mechanisms (140), two adjusting mechanisms (150) and a positioning mechanism (160) are arranged inside the fixed shell (110). The two rollers (120) are located between the two driving mechanisms (140). The two driving mechanisms (140) are located between the two adjusting mechanisms (150). 150), the driving mechanism (140) is used for driving the roller (120) to rotate, the adjusting mechanism (150) is used for adjusting the distance between the two rollers (120), the two rollers (120) are provided with a plurality of partitions (130), the positioning mechanism (160) is used for fixing the position of the partitions (130), the inner side surface of the partitions (130) is rotatably connected to a rotating plate (131), and the inner side surface of the rotating plate (131) is rotatably connected to a connecting ring (132) slidably connected to the side surface of the roller (120); A limiting module (200) is arranged on one side of the rolling module (100), and the limiting module (200) is used to limit the position of the aluminum alloy; A roller conveyor (300) is arranged inside the limiting module (200), and the roller conveyor (300) is used to convey unrolled aluminum alloy; The second roller conveyor (400) is arranged on the other side of the rolling module (100), and the second roller conveyor (400) is used to convey the rolled aluminum alloy.

5. The method for preparing a high-strength aluminum alloy according to claim 4, characterized in that: The inner side surfaces of both ends of the roller (120) are fixedly connected to a rectangular frame (121), the inner side surface of the rectangular frame (121) is slidably connected to a rectangular rod 1 (122), and the side surface of the rectangular rod 1 (122) is fixedly connected to a return spring (123) fixedly connected to the inner side surface of the rectangular frame (121); The driving mechanism (140) comprises: A fixing frame (141) is located inside the fixing shell (110); A connecting frame (142) is slidably connected to the inner side of the fixing frame (141); Two transmission rods (143) are respectively arranged in the connection frame (142) corresponding to the two rollers (120); a worm gear (1431) is fixedly sleeved on the side of the transmission rod (143); the inner side of the transmission rod (143) is slidably connected to the side of the adjacent rectangular rod (122); and the side of the transmission rod (143) is rotatably connected to two limit blocks (1432) slidably connected to the inner side of the fixed frame (141); A driving motor (145) is fixedly connected to the bottom surface of the connecting frame (142); The second rectangular rod (146) is rotatably connected inside the connection frame (142), and the output end of the driving motor (145) is transmission-connected to the bottom end of the second rectangular rod (146); A sliding seat (147) is slidably connected to the inner side of the connecting frame (142) corresponding to a transmission rod (143), and a side surface of the sliding seat (147) is fixedly connected to a side surface of an adjacent limit block (1432); The transmission shaft (148) is rotatably connected to the inner side surface of the sliding seat (147), the inner side surface of the transmission shaft (148) is slidably connected to the side surface of the second rectangular rod (146), and the side surface of the transmission shaft (148) is fixedly connected with a worm (1481) meshing with the adjacent worm wheel (1431).

6. The method for preparing a high-strength aluminum alloy according to claim 5, characterized in that: The adjustment mechanism (150) comprises: An adjusting frame (151) is fixedly connected to a side surface of the fixing frame (141); Two adjustment plates (152) are both rotatably connected to the inner side of the adjustment frame (151), and a transmission gear ring (1521) is fixedly connected to the side of the adjustment plate (152); Two positioning blocks (153) are rotatably connected to the inner side surfaces of the two adjustment plates (152), the axis of the positioning blocks (153) is staggered from the axis of the adjustment plates (152), and the side surfaces of the positioning blocks (153) are fixedly connected to the ends of the adjacent transmission rods (143); The two rotating shafts (154) are both rotatably connected to the inner side surface of the adjustment frame (151), and a transmission gear (1541) meshing with an adjacent transmission gear ring (1521) is fixedly sleeved on the side surface of the rotating shaft (154).

7. The method for preparing a high-strength aluminum alloy according to claim 6, characterized in that: The positioning mechanism (160) comprises: Two positioning frames (161) are fixedly connected inside the fixed shell (110); a fixed frame (141) and an adjusting frame (151) are fixedly connected between the two positioning frames (161) on their sides; another fixed frame (141) and another adjusting frame (151) are slidably connected between the two positioning frames (161); and the inner side surfaces of the positioning frames (161) are slidably connected to a plurality of positioning seats (1611) slidably connected to adjacent partitions (130); Two positioning screw rods (162) are respectively arranged inside the two positioning frames (161). The positioning screw rods (162) pass through the interior of the fixed shell (110), and the ends of the positioning screw rods (162) are screwed together with the inner side surfaces of the positioning frames (161). The positioning screw rods (162) are screwed together with the inner side surfaces of the adjacent positioning seats (1611).

8. The method for preparing a high-strength aluminum alloy according to claim 7, characterized in that: The positioning mechanism (160) further comprises: Two connecting screw rods (164) are rotatably connected to the inner side surfaces of the two positioning frames (161), and the side surfaces of the connecting screw rods (164) are rotatably connected to the inner side surface of the fixed shell (110); Two connecting blocks (165) are respectively slidably connected inside the two positioning frames (161), the opposite surfaces of the two connecting blocks (165) are fixedly connected to the side of another adjusting frame (151), and the inside of the connecting block (165) is screwed and connected to the side of the adjacent connecting screw rod (164); The two toothed belt wheels (166) are respectively fixedly sleeved on the two connecting screw rods (164), and the toothed belt wheels (166) are located inside the fixed shell (110). The two toothed belt wheels (166) are connected through a toothed belt transmission.

9. The method for preparing a high-strength aluminum alloy according to claim 4, characterized in that: The limit module (200) comprises: Two side frames (210) are respectively arranged on both sides of the roller conveyor (300); two fixing columns (211) are fixedly connected to the bottom surface of the side frame (210); a sliding frame (212) is slidably connected to the inner side surface of the side frame (210) away from the rolling module (100); a retaining screw (214) passing through the inside of the sliding frame (212) is screwed and connected to the inner side surface of the side frame (210); and a power motor (213) is fixedly connected to the side surface of one side frame (210); Two side rods (220) are slidably connected to a plurality of connection seats (221) on the side surfaces; both ends of one side rod (220) are rotatably connected to the inner side surface of the adjacent side frame (210), and both ends of the other side rod (220) are rotatably connected to the inner side surface of the adjacent sliding frame (212); the output end of the power motor (213) is transmission-connected to the end of one side rod (220); both ends of the side rod (220) are fixedly sleeved with a second toothed belt wheel (225); the two second toothed belt wheels (225) corresponding to the same side frame (210) are connected through a toothed belt transmission; the inner side surface of the connection seat (221) is fixedly connected with a sliding block (223) slidably connected to the side surface of the side rod (220); the inner side surface of the connection seat (221) is provided with a sprocket wheel (224); the inner side surface of the connection seat (221) is screwedly connected with an abutment screw (222) in contact with the side surface of the side rod (220); A plurality of chain belts (230) are all drivingly connected to two adjacent sprocket wheels (224).

10. The method for preparing a high-strength aluminum alloy according to claim 9, characterized in that: The limiting module (200) further comprises a support plate (240), the side surface of the support plate (240) being fixedly connected to the side surface of the fixing column (211), one side of the top surface of the support plate (240) being fixedly connected to a support rod (241) fixedly connected to the bottom surface of the roller conveyor (300), the other side of the top surface of the support plate (240) being fixedly connected to two support frames (242), the inner side surfaces of the two support frames (242) being slidably connected to a U-shaped rod (243) and a U-shaped rod (244), the top surface of the U-shaped rod (243) being fixedly connected to the roller conveyor (300) The bottom surface of the conveyor (300) is in contact with the conveyor, and racks (245) are fixedly connected on both sides of the opposite surfaces of the U-shaped rod (243) and the U-shaped rod (244). The inner side surface of the support frame (242) is located between the two racks (245) and is rotatably connected with a connecting shaft (246). The side surface of the connecting shaft (246) is fixedly sleeved with a linkage gear (247) meshing with two adjacent racks (245). The top surface of the support plate (240) is fixedly connected with a hydraulic rod (248) that is transmission-connected to the bottom end of the U-shaped rod (243).

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