Precise extrusion forming die for thin-wall aluminum alloy

Abstract

The utility model relates to the technical field of extrusion forming dies, in particular to a thin-wall aluminum alloy precise extrusion forming die which comprises a table body, the rear side of the top of the table body is fixedly connected with a rack through bolts, and a hydraulic cylinder is fixedly installed at the top of the rack in a penetrating mode through bolts and nuts. The output end of the hydraulic cylinder is fixedly connected with an upper mold through a bolt, the top of the table body is fixedly connected with a lower mold through a bolt, jacking mechanisms are installed on the surfaces of the hydraulic cylinder and the table body, and an anti-warping mechanism is installed on the surface of the hydraulic cylinder. The anti-warping mechanism moves downwards to enable the upper round roller on the anti-warping mechanism to be in contact with the top of an aluminum alloy plate firstly, the second spring compresses along with downward movement of the connecting plate, the upper round roller presses the aluminum alloy under the action of force application of the second spring, extrusion forming is carried out under the cooperation of the lower die along with downward movement of the upper die, and the aluminum alloy plate is formed. And meanwhile, due to four-corner installation of the anti-warping mechanism, the aluminum alloy plate can be better pressed and prevented from warping.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion forming dies, in particular to a thin-wall aluminum alloy precision extrusion forming die. Background Art

[0002] Alloy plates are widely used in various fields. Aluminum alloy has low density but relatively high strength, close to or exceeding that of high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry. Many hardware parts on the market are stamped from aluminum alloy.

[0003] After searching, the patent number is CN217142053U, and the name is a utility model of a thin-walled aluminum alloy precision extrusion forming die, which includes a supporting mechanism, a limiting mechanism, a punch and a die. Through research and analysis, it is found that although it has the advantage that the two ends are not easy to warp up when extruded, it still has the following disadvantages to a certain extent.

[0004] For example, only the two ends of the aluminum alloy plate can be pressed and fixed, but not the front and back sides, resulting in the problem of warping during extrusion forming. In addition, the threaded rod is driven by the motor to drive the lifting block, push rod and push plate to move up, and the formed aluminum alloy part is ejected from the die. The workpiece cannot be directly ejected when the hydraulic cylinder retracts, resulting in poor operation continuity and increased power consumption. In order to solve the above technical problems, we have designed a thin-walled aluminum alloy precision extrusion forming die. Utility Model Content

[0005] The utility model aims to provide a thin-wall aluminum alloy precision extrusion forming die, which has the advantages of four-corner pressing to prevent warping and easy ejection, solves the problem that only the two ends of the aluminum alloy plate can be pressed and fixed, but the front and rear sides cannot be pressed and fixed, and the formed aluminum alloy parts are ejected from the die through the drive of a motor, and the workpiece cannot be directly ejected when the hydraulic cylinder retracts.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thin-walled aluminum alloy precision extrusion forming die, comprising a table body, the rear side of the top of the table body is fixedly connected to a frame by bolts, a hydraulic cylinder is fixedly installed on the top of the frame by bolts and nuts, the output end of the hydraulic cylinder is fixedly connected to an upper die by bolts, the top of the table body is fixedly connected to a lower die by bolts, a lifting mechanism is installed on the surface of the hydraulic cylinder and the table body, and an anti-warping mechanism is installed on the surface of the hydraulic cylinder.

[0007] Preferably, the lifting mechanism includes a U-shaped plate, the upper end of the U-shaped plate is fixedly connected to the output end of the hydraulic cylinder by bolts, the lower end of the U-shaped plate passes through the frame and the table body and extends to the inner cavity of the table body, the bottom of the lower end of the U-shaped plate is slidably penetrated by a square rod, and a top piece is placed at the bottom of the inner cavity of the lower mold, the top end of the square rod slides through the table body and the lower mold and is welded to the bottom of the top piece, the top of the square rod surface is welded with a limit plate, and the surface of the upper end of the square rod is movably sleeved with a spring 1, and the two ends of the spring 1 are respectively fixedly connected to the inner wall of the table body and the top of the limit plate.

[0008] Preferably, the anti-warping mechanism includes roller frames, and there are eight roller frames, of which the four at the bottom are fixedly connected to the four corners of the top of the platform through supports, and the inner walls of the eight roller frames are rotatably inlaid with round rollers through bearings. The output end of the hydraulic cylinder is fixedly connected to a connecting plate through bolts, and there are four connecting plates. Limit rods are slidably penetrated on the tops of the four connecting plates, and the four upper roller frames are respectively welded to the bottom ends of the corresponding limit rods. A spring two is provided on the surface of the limit rod, and the two ends of the spring two are respectively fixedly connected to the connecting plate and one side of the upper roller frame.

[0009] Preferably, a limiting block is welded to the top end of the limiting rod, and the upper surface section of the round roller in the lower roller frame is flush with the top of the lower mold.

[0010] Preferably, positioning mechanisms are installed on the right and rear sides of the top of the platform body, and the positioning mechanisms include guide rails, the bottom of the guide rails are fixedly connected to the top of the platform body by bolts, a slider is slidably clamped on the surface of the guide rail, a positioning plate is welded to the top of the slider, and the top of the slider is threadedly inlaid with a fixing bolt.

[0011] Preferably, the backs of the frame and the platform are provided with movable holes adapted to the U-shaped plates, and both sides of the front of the platform are rotatably connected with cabinet doors via hinges.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model places the aluminum alloy on the lower die, so that the bottom of the aluminum alloy plate contacts the surface of the lower die and the lower round roller to support it, controls the elongation of the hydraulic cylinder, and moves the upper die, the anti-warping mechanism and the U-shaped plate downward. The anti-warping mechanism moves downward so that the upper round roller thereon contacts the top of the aluminum alloy plate first, and as the connecting plate moves downward, the spring 2 is compressed, and the upper round roller presses the aluminum alloy under the action of its force, and as the upper die moves downward, it is extruded with the cooperation of the lower die, and while pressing the aluminum alloy plate under the design of the round roller, it will not hinder the movement during extrusion, thereby having the advantage of preventing the aluminum alloy plate from warping during extrusion. At the same time, the four corners of the anti-warping mechanism are installed, so that the aluminum alloy plate can be better pressed and prevented from warping, so that the four sides of the aluminum alloy plate are completely restricted, thereby improving the processing quality.

[0014] 2. The utility model controls the retraction of the hydraulic cylinder to move the connecting plate and the upper roller frame and round roller upward, and drives the U-shaped plate to move upward. When the hydraulic cylinder retracts to the initial position, the retraction of the hydraulic cylinder is continued to be controlled to make the U-shaped plate move up and contact with the limit plate, so that it pushes the limit plate, the square rod and the ejector to move upward, thereby having the advantage of being able to eject the formed workpiece out of the mold. During the ejection process, the spring is compressed, and then the workpiece is easily taken out. The retraction of the hydraulic cylinder is then controlled to restore the upper mold to its initial position. Under the action of the spring rebound, the limit plate and the square rod are moved downward, and the ejector is docked and reset in the groove in the lower mold, which is convenient for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a rear-view stereoscopic schematic diagram of the utility model;

[0017] Figure 3 It is a partially cutaway stereoscopic schematic diagram of the utility model;

[0018] Figure 4 For this utility model Figure 3 A is an enlarged schematic diagram;

[0019] Figure 5 It is a three-dimensional schematic diagram of the lower mold and the top piece of the utility model.

[0020] In the figure: 1. table body; 2. frame; 3. hydraulic cylinder; 4. upper mold; 5. lower mold; 6. lifting mechanism; 61. U-shaped plate; 62. square rod; 63. lift piece; 64. limit plate; 65. spring one; 7. anti-warping mechanism; 71. roller frame; 72. round roller; 73. connecting plate; 74. limit rod; 75. spring two; 76. limit block; 8. positioning mechanism; 81. guide rail; 82. slide block; 83. positioning plate; 84. fixing bolt. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 5 A thin-walled aluminum alloy precision extrusion forming die comprises a platform 1, the rear side of the top of the platform 1 is fixedly connected to a frame 2 by bolts, a hydraulic cylinder 3 is fixedly installed on the top of the frame 2 by bolts and nuts, an upper die 4 is fixedly connected to the output end of the hydraulic cylinder 3 by bolts, a lower die 5 is fixedly connected to the top of the platform 1 by bolts, a lifting mechanism 6 is installed on the surface of the hydraulic cylinder 3 and the platform 1, and an anti-warping mechanism 7 is installed on the surface of the hydraulic cylinder 3.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The lifting mechanism 6 includes a U-shaped plate 61. By setting the U-shaped plate 61, the lifting mechanism 6 moves simultaneously during the lifting process of the hydraulic cylinder 3, so that when the hydraulic cylinder 3 retracts, it contacts the limit plate 64, and can drive the limit plate 64 to move upward. The upper end of the U-shaped plate 61 is fixedly connected to the output end of the hydraulic cylinder 3 by bolts, and the lower end of the U-shaped plate 61 penetrates the frame 2 and the table body 1 and extends to the inner cavity of the table body 1. The bottom of the lower end of the U-shaped plate 61 is slidably penetrated by a square rod 62. By setting the square rod 62, the top piece 63 is driven to lift and lower under the action of its lifting and lowering, and at the same time plays a role of limiting guide, effectively avoiding rotation during the lifting and lowering process. The bottom of the inner cavity of the lower mold 5 is docked with a top piece 63. By setting the top piece 63, it matches the groove at the bottom of the inner cavity of the lower mold 5, plays a supporting role during extrusion molding, and is used for removal. The upper end of the square rod 62 is provided with a spring 65, which is provided to compress the limit plate 64 during the movement of the limit plate 61. When the U-shaped plate 61 is lifted to a certain height, the limit plate 64 is welded to the bottom of the top piece 63. The upper end of the square rod 62 is provided with a spring 65, which is provided to compress the limit plate 64 during the movement of the limit plate 64. When the U-shaped plate 61 is lifted to a certain height, the limit plate 64, the square rod 62 and the top piece 63 are welded to the bottom of the top piece 63. The upper end of the square rod 62 is provided with a spring 65, which is provided to compress the limit plate 64 during the movement of the limit plate 64. When the U-shaped plate 61 moves downward, the limit plate 64, the square rod 62 and the top piece 63 are stably moved downward and reset under the action of its elastic recovery. The two ends of the spring 65 are respectively fixedly connected to the inner wall of the table 1 and the top of the limit plate 64.

[0023] See also Figure 1 , Figure 2 and Figure 3The anti-warping mechanism 7 includes a roller frame 71. By setting the roller frame 71, a support and installation position is provided for multiple round rollers 72. The number of roller frames 71 is eight, and the four lower ones are fixedly connected to the four corners of the top of the platform 1 through supports. The inner walls of the eight roller frames 71 are rotatably inlaid with round rollers 72 through bearings. By setting the round rollers 72, the anti-warping effect is played in the process of pressing the aluminum alloy plate, and the movement of the aluminum alloy plate during extrusion forming will not be hindered. The output end of the hydraulic cylinder 3 is fixedly connected with a connecting plate 73 by bolts. By setting the connecting plate 73, the limit rod 7 4 is limited, so that the limit rod 74 and the hydraulic cylinder 3 are indirectly connected. There are four connecting plates 73. The tops of the four connecting plates 73 are all slidably penetrated by the limit rods 74. The four upper roller frames 71 are respectively welded to the bottom ends of the corresponding limit rods 74. The surface of the limit rod 74 is movably sleeved with a spring 2 75. By setting the spring 2 75, the spring 2 75 is compressed as the connecting plate 73 moves downward. Under the action of the force applied by the spring 2 75, the upper round roller 72 presses the aluminum alloy. The two ends of the spring 2 75 are respectively fixedly connected to the connecting plate 73 and one side of the upper roller frame 71.

[0024] See also Figure 1 A limiting block 76 is welded to the top of the limiting rod 74. By setting the limiting block 76, when the hydraulic cylinder 3 drives the connecting plate 73 to move upward, the connecting plate 73 contacts the limiting block 76, which can drive the limiting rod 74 to move upward, and the upper surface section of the round roller 72 in the lower roller frame 71 is flush with the top of the lower mold 5.

[0025] See also Figure 1 and Figure 4 A positioning mechanism 8 is installed on the right side and rear side of the top of the table 1. The positioning mechanism 8 includes a guide rail 81. By setting the guide rail 81, the slider 82 is guided and limited to provide a sliding direction. The bottom of the guide rail 81 is fixedly connected to the top of the table 1 by bolts. The surface of the guide rail 81 is slidably clamped with a slider 82. A positioning plate 83 is welded on the top of the slider 82. By setting the positioning plate 83, the aluminum alloy plate placed on the lower mold 5 is quickly positioned, which is convenient for accurate processing, improves the processing quality, and reduces the defective rate. The top of the slider 82 is threadedly inlaid with a fixing bolt 84. By setting the fixing bolt 84, the adjusted positioning plate 83 and the slider 82 are fixed according to the size of the aluminum alloy plate to be processed to prevent them from moving.

[0026] See also Figure 1 and Figure 2 The frame 2 and the back of the platform 1 are provided with movable holes adapted to the U-shaped plate 61. By setting the movable holes, the hydraulic cylinder 3 will not be hindered when driving the U-shaped plate 61 to move. Both sides of the front of the platform 1 are connected with the box door through hinge rotation.

[0027] When in use, the device is connected to an external power supply and controller through a wire, and the aluminum alloy is placed on the lower mold 5 so that the bottom of the aluminum alloy plate contacts the surface of the lower mold 5 and the lower round roller 72 to support it. The extension of the hydraulic cylinder 3 is controlled to move the upper mold 4, the anti-warping mechanism 7 and the U-shaped plate 61 downward. The anti-warping mechanism 7 moves downward so that the upper round roller 72 on it first contacts the top of the aluminum alloy plate. As the connecting plate 73 moves downward, the spring 75 is compressed, and the upper round roller 72 presses the aluminum alloy under the action of its force. As the upper mold 4 moves downward, it is extruded with the cooperation of the lower mold 5. While pressing the aluminum alloy plate, the round roller 72 is designed to not hinder the movement during extrusion. In order to better hold and prevent the aluminum alloy plate from warping, the hydraulic cylinder 3 is controlled to retract, so that the connecting plate 73 and the upper roller frame 71 and the round roller 72 move upward, and the U-shaped plate 61 is driven to move upward. When the hydraulic cylinder 3 retracts to the initial position, the hydraulic cylinder 3 is continuously controlled to retract so that the U-shaped plate 61 moves upward and contacts with the limit plate 64, so that the limit plate 64, the square rod 62 and the ejector 63 are pushed upward to eject the formed workpiece from the mold. During the ejection process, the spring 65 is compressed, and then the workpiece is taken out easily. Then the hydraulic cylinder 3 is controlled to retract so that the upper mold 4 returns to its initial position. Under the action of the spring 65 rebounding, the limit plate 64 and the square rod 62 are moved downward, and the ejector 63 is docked and reset in the groove in the lower mold 5.

[0028] In summary: the thin-walled aluminum alloy precision extrusion forming die, through the lifting mechanism 6 and the anti-warping mechanism 7, solves the problem that only the two ends of the aluminum alloy plate can be pressed and fixed, but the front and rear sides cannot be pressed and fixed, and the formed aluminum alloy parts are ejected from the die through the drive of the motor, and the workpiece cannot be directly ejected when the hydraulic cylinder retracts.

Claims

1. A thin-walled aluminum alloy precision extrusion forming die, comprising a platform (1), the rear side of the top of the platform (1) is fixedly connected to a frame (2) by bolts, a hydraulic cylinder (3) is fixedly installed on the top of the frame (2) by bolts and nuts, an output end of the hydraulic cylinder (3) is fixedly connected to an upper die (4) by bolts, and the top of the platform (1) is fixedly connected to a lower die (5) by bolts, characterized in that: A lifting mechanism (6) is installed on the surface of the hydraulic cylinder (3) and the platform body (1), and an anti-warping mechanism (7) is installed on the surface of the hydraulic cylinder (3).

2. The thin-wall aluminum alloy precision extrusion forming die according to claim 1, characterized in that: The lifting mechanism (6) comprises a U-shaped plate (61), the upper end of the U-shaped plate (61) is fixedly connected to the output end of the hydraulic cylinder (3) by bolts, the lower end of the U-shaped plate (61) passes through the frame (2) and the platform (1) and extends to the inner cavity of the platform (1), the bottom of the lower end of the U-shaped plate (61) is slidably penetrated by a square rod (62), the bottom of the inner cavity of the lower mold (5) is butt-jointed with a top piece (63), the top end of the square rod (62) slides through the platform (1) and the lower mold (5) and is welded to the bottom of the top piece (63), the top of the surface of the square rod (62) is sleeved with a welded limit plate (64), the surface of the upper end of the square rod (62) is movably sleeved with a spring (65), and the two ends of the spring (65) are respectively fixedly connected to the inner wall of the platform (1) and the top of the limit plate (64).

3. The thin-wall aluminum alloy precision extrusion forming die according to claim 1, characterized in that: The anti-warping mechanism (7) comprises a roller frame (71), wherein the number of the roller frames (71) is eight, wherein the four lower ones are respectively fixedly connected to the four corners of the top of the platform (1) through supports, the inner walls of the eight roller frames (71) are all rotatably inlaid with round rollers (72) through bearings, the output end of the hydraulic cylinder (3) is fixedly connected to a connecting plate (73) through bolts, the number of the connecting plates (73) is four, the tops of the four connecting plates (73) are all slidably penetrated by limit rods (74), the four upper roller frames (71) are respectively welded to the bottom ends of the corresponding limit rods (74), the surface of the limit rod (74) is movably sleeved with a second spring (75), and the two ends of the second spring (75) are respectively fixedly connected to the connecting plate (73) and one side of the upper roller frame (71).

4. The thin-wall aluminum alloy precision extrusion forming die according to claim 3, characterized in that: A limiting block (76) is welded to the top end of the limiting rod (74), and the upper surface section of the round roller (72) in the lower roller frame (71) is flush with the top of the lower mold (5).

5. The thin-wall aluminum alloy precision extrusion forming die according to claim 1, characterized in that: A positioning mechanism (8) is installed on the right side and the rear side of the top of the platform (1), and the positioning mechanism (8) comprises a guide rail (81). The bottom of the guide rail (81) is fixedly connected to the top of the platform (1) by bolts. A slider (82) is slidably engaged on the surface of the guide rail (81). A positioning plate (83) is welded to the top of the slider (82). A fixing bolt (84) is threadedly embedded on the top of the slider (82).

6. The thin-wall aluminum alloy precision extrusion forming die according to claim 2, characterized in that: The backs of the frame (2) and the platform (1) are both provided with movable holes adapted to the U-shaped plate (61), and both sides of the front of the platform (1) are rotatably connected to cabinet doors via hinges.

Images