Aluminum casting pre-pressing machine

Abstract

The utility model provides an aluminum casting pre-press, which relates to the technical field of aluminum casting production equipment, and comprises a base, the top of the base is fixedly connected with a support rod, the top of the support rod is fixedly connected with a top plate, the outer side of the base is provided with a controller, the top of the top plate is provided with a stamping mechanism, and the stamping mechanism is provided with a stamping mechanism. A stamping groove is fixedly connected to the top of the base, a lifting mechanism is arranged on the outer side of the stamping groove, and the stamping mechanism comprises a hydraulic cylinder. The micro motor of the lifting mechanism drives the lead screw to rotate, the movable block is driven to move up and down along the lead screw, the L-shaped rod is in linkage with the sliding ring to slide on the fixed rod, and finally the lifting plate stably ascends and descends in the punching groove. The structure supports millimeter-level fine adjustment (the adjustment precision is + / -0.5 mm) of the height of the lifting plate, is adaptive to aluminum casting blanks with different thicknesses, and avoids excessive or insufficient stamping caused by blank size difference.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum casting production equipment, specifically an aluminum casting pre-pressing machine. Background Technology

[0002] Die castings generally refer to pressure-cast parts, typically produced by using a die casting machine equipped with molds to press and shape molten metal. Because copper, zinc, aluminum, and aluminum alloys possess excellent fluidity and plasticity, and because the casting process takes place under pressure in a die casting machine, die castings can be produced in various complex shapes with high precision and surface finish. This significantly reduces the amount of machining required and the casting allowance for copper, zinc, aluminum, or aluminum alloys. Die castings are widely used in the automotive, electrical appliance, and other machinery manufacturing industries.

[0003] The patent with publication number CN214719713U discloses a pre-pressing machine for aluminum castings. Specifically, the patent discloses a technical solution that includes "a base and a top plate, the base being connected to the top plate via a support column, a hydraulic cylinder on the top plate, a stamping plate connected to the base via a sleeve and the hydraulic cylinder, a stamping head on the bottom surface of the stamping plate, a pre-pressing mechanism on the stamping plate, a worktable on the top surface of the base, a stamping cavity on the top surface of the worktable, a limit block at the port of the stamping cavity, a placement plate between the limit block and the stamping cavity support, a groove on the bottom surface of the stamping cavity, a support seat in the middle of the groove, and a first spring connected to the placement plate between the groove and the support seat." This solution achieves the technical effect of "effectively buffering the impact of each stamping head strike on the worktable and base, and enabling the aluminum casting to quickly separate from the stamping cavity after stamping, resulting in smoother demolding."

[0004] In the field of aluminum casting production, the pre-pressing process is a crucial step in ensuring the dimensional accuracy and internal density of castings. With the increasing demand for lightweight aluminum castings (such as motor housings and gearbox components) from industries such as new energy vehicles and high-end equipment, the adaptability to multi-specification blanks and the accuracy of pre-pressing positions have become core challenges in equipment design. Utility Model Content

[0005] The purpose of this utility model is to provide an aluminum casting pre-pressing machine to solve the problems mentioned in the background art and overcome its technical defects.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is: an aluminum casting pre-pressing machine, including a base, a support rod fixedly connected to the top of the base, a top plate fixedly connected to the top of the support rod, a controller provided on the outside of the base, a stamping mechanism provided on the top of the top plate, a stamping groove fixedly connected to the top of the base, and a lifting mechanism provided on the outside of the stamping groove.

[0007] The stamping mechanism includes a hydraulic cylinder, a piston rod is fixedly connected to the bottom of the hydraulic cylinder, and a stamping plate is fixedly connected to the bottom of the piston rod;

[0008] The lifting mechanism includes a micro motor, a lead screw fixedly connected to the top output end of the micro motor, a moving block threadedly connected to the outer side of the lead screw, an L-shaped rod fixedly connected to the outer side of the moving block, connecting plates fixedly connected to both sides of the stamping groove, a fixed rod fixedly connected between the connecting plates, a sliding ring slidably connected to the outer side of the fixed rod, a connecting rod fixedly connected to the outer side of the sliding ring, a lifting plate fixedly connected to the outer side of the connecting rod, and a lifting groove formed in the side wall of the stamping groove.

[0009] As a further improvement of this utility model: a protective mechanism is provided on the top of the base, the protective mechanism includes a stabilizing plate, a movable groove is provided inside the stabilizing plate, a sliding rod is slidably engaged inside the movable groove, a protective plate is fixedly connected to the top of the sliding rod, a return spring is fixedly connected to the outside of the sliding rod, a first magnetic pole disk is fixedly connected to the outside of the protective plate, a transmission rod is fixedly connected to the outside of the piston rod, and a second magnetic pole disk is fixedly connected to the bottom of the transmission rod.

[0010] As a further embodiment of this utility model: the top plate is fixedly connected to the top of the base by a support rod, the hydraulic cylinder is fixedly connected directly above the top plate, and the stamping plate is movably connected directly above the stamping groove by a piston rod.

[0011] As a further embodiment of this invention: the micro motor is fixedly connected to the outside of the stamping groove, and the moving block is slidably connected to the outside of the stamping groove via a lead screw.

[0012] As a further embodiment of this utility model: the L-shaped rods are symmetrically distributed on the outside of the moving block, and the end of the L-shaped rod away from the moving block is fixedly connected to the outside of the sliding ring.

[0013] As a further embodiment of this utility model: the lifting grooves are symmetrically distributed in the side wall of the stamping groove, the connecting rod is slidably connected inside the lifting groove, and the lifting plate is movably connected inside the stamping groove.

[0014] As a further embodiment of this utility model: the stabilizing plates are symmetrically distributed on the top of the base, the protective plate is slidably connected to the outside of the stamping groove via a sliding rod, and the end of the return spring away from the sliding rod is fixedly connected to the inner wall of the moving groove.

[0015] As a further embodiment of this utility model: the protective plate is symmetrically distributed on the outside of the stamping groove, the transmission rod and the second magnetic pole disk are symmetrically distributed on the outside of the piston rod, and the second magnetic pole disk and the first magnetic pole disk are magnetic poles of the same name. When the stamping plate is located inside the stamping groove, the second magnetic pole disk is located outside the first magnetic pole disk.

[0016] Compared with the prior art, the beneficial effects of this utility model include:

[0017] (I) In this utility model, the micro motor of the lifting mechanism drives the lead screw to rotate, which in turn moves the moving block up and down along the lead screw. Through the L-shaped rod linkage sliding ring, the block slides on the fixed rod, ultimately allowing the lifting plate to rise and fall smoothly within the stamping groove. This structure supports millimeter-level fine adjustment of the lifting plate height (adjustment accuracy ±0.5mm), adapting to aluminum casting blanks of different thicknesses and avoiding over- or under-stamping caused by differences in blank dimensions.

[0018] (II) In this utility model, the protective mechanism utilizes the principle of mutual repulsion between like magnetic poles: when the piston rod drives the stamping plate downwards, the second magnetic pole disk at the bottom of the transmission rod approaches the first magnetic pole disk of the protective plate, and the repulsive force pushes the protective plate upwards along the slide rod, forming a physical protective barrier to prevent the operator's hands from entering the stamping area. After stamping is completed, the return spring pulls the protective plate back to its original position, realizing the intelligent safety logic of "automatic protection during stamping and open operation when the machine stops". Attached Figure Description

[0019] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0020] Figure 1 A schematic diagram of the structure according to the present invention is shown;

[0021] Figure 2 The schematic diagram shows the external structure of the lifting mechanism according to one embodiment of the present invention;

[0022] Figure 3 The schematic diagram shows the external structure of the protective mechanism according to one embodiment of the present invention;

[0023] Figure 4 Schematic illustration of the present invention Figure 1 Enlarged view of the structure at point A in the middle;

[0024] The diagram is labeled as follows: 1. Base; 2. Support rod; 3. Top plate; 4. Controller; 5. Stamping mechanism; 51. Hydraulic cylinder; 52. Piston rod; 53. Stamping plate; 6. Stamping groove; 7. Lifting mechanism; 71. Micro motor; 72. Lead screw; 73. Moving block; 74. L-shaped rod; 75. Connecting plate; 76. Fixed rod; 77. Sliding ring; 78. Connecting rod; 79. Lifting plate; 710. Lifting groove; 8. Protective mechanism; 81. Stabilizing plate; 82. Moving groove; 83. Slide rod; 84. Protective plate; 85. Return spring; 86. First magnetic pole disk; 87. Transmission rod; 88. Second magnetic pole disk. Detailed Implementation

[0025] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0026] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0027] Please see Figure 1-4 An aluminum casting pre-pressing machine includes a base 1, a support rod 2 fixedly connected to the top of the base 1, a top plate 3 fixedly connected to the top of the support rod 2, a controller 4 provided on the outside of the base 1, a stamping mechanism 5 provided on the top of the top plate 3, a stamping groove 6 fixedly connected to the top of the base 1, and a lifting mechanism 7 provided on the outside of the stamping groove 6.

[0028] The stamping mechanism 5 includes a hydraulic cylinder 51, a piston rod 52 is fixedly connected to the bottom of the hydraulic cylinder 51, and a stamping plate 53 is fixedly connected to the bottom of the piston rod 52.

[0029] The lifting mechanism 7 includes a micro motor 71, a lead screw 72 fixedly connected to the top output end of the micro motor 71, a moving block 73 threadedly connected to the outer side of the lead screw 72, an L-shaped rod 74 fixedly connected to the outer side of the moving block 73, connecting plates 75 fixedly connected to both sides of the stamping groove 6, a fixed rod 76 fixedly connected between the connecting plates 75, a sliding ring 77 slidably connected to the outer side of the fixed rod 76, a connecting rod 78 fixedly connected to the outer side of the sliding ring 77, a lifting plate 79 fixedly connected to the outer side of the connecting rod 78, and a lifting groove 710 opened in the side wall of the stamping groove 6.

[0030] Furthermore: the top plate 3 is fixedly connected to the top of the base 1 via the support rod 2; the hydraulic cylinder 51 is fixedly connected directly above the top plate 3; the stamping plate 53 is movably connected directly above the stamping groove 6 via the piston rod 52; the micro motor 71 is fixedly connected to the outside of the stamping groove 6; the moving block 73 is slidably connected to the outside of the stamping groove 6 via the lead screw 72; the L-shaped rods 74 are symmetrically distributed on the outside of the moving block 73, and the end of the L-shaped rod 74 away from the moving block 73 is fixedly connected to the outside of the sliding ring 77; the lifting grooves 710 are symmetrically distributed in the side wall of the stamping groove 6; the connecting rod 78 is slidably connected inside the lifting groove 710; and the lifting plate 79 is movably connected inside the stamping groove 6.

[0031] It should be noted that: the controller 4 sends a command to start the hydraulic cylinder 51, and the hydraulic oil pushes the piston rod 52 to move vertically downward, which drives the stamping plate 53 to apply pressure to the aluminum casting blank in the stamping groove 6. The pressure output of the hydraulic cylinder can be precisely adjusted by the controller 4, such as 0-50 tons, to meet the pre-pressure requirements of different castings, such as a low pressure of 10 tons for thin-walled parts and a high pressure of 40 tons for thick-walled parts.

[0032] Specifically: When the stamping plate 53 contacts the blank and reaches the preset pressure value, the built-in sensor of the hydraulic cylinder 51 triggers a signal, and the controller 4 instructs the hydraulic cylinder 51 to stop the oil supply and switch the oil circuit. The piston rod 52 drives the stamping plate 53 to automatically return to its original position. The entire stamping process can be automated and cyclical, such as completing 5-8 stampings per minute, by setting the stroke (e.g., a maximum stroke of 100mm) through the controller 4.

[0033] As a further improvement of this utility model, a protective mechanism 8 is provided on the top of the base 1. The protective mechanism 8 includes a stabilizing plate 81. A moving groove 82 is opened inside the stabilizing plate 81. A sliding rod 83 is slidably engaged inside the moving groove 82. A protective plate 84 is fixedly connected to the top of the sliding rod 83. A return spring 85 is fixedly connected to the outside of the sliding rod 83. A first magnetic pole disk 86 is fixedly connected to the outside of the protective plate 84. A transmission rod 87 is fixedly connected to the outside of the piston rod 52. A second magnetic pole disk 88 is fixedly connected to the bottom of the transmission rod 87.

[0034] It should be noted that: the stabilizing plates 81 are symmetrically distributed on the top of the base 1, the protective plate 84 is slidably connected to the outside of the stamping groove 6 through the sliding rod 83, the end of the return spring 85 away from the sliding rod 83 is fixedly connected to the inner wall of the moving groove 82, the protective plate 84 is symmetrically distributed on the outside of the stamping groove 6, the transmission rod 87 and the second magnetic pole disk 88 are symmetrically distributed on the outside of the piston rod 52, and the second magnetic pole disk 88 and the first magnetic pole disk 86 are the same magnetic pole. When the stamping plate 53 is located inside the stamping groove 6, the second magnetic pole disk 88 is located outside the first magnetic pole disk 86.

[0035] Furthermore: With the protective plate 84 in a low position, the operator places the aluminum casting blank on the lifting plate 79 and sets the height of the lifting plate 79 through the controller 4. For example, it can be adjusted to the middle of the stamping groove 6 according to the thickness of the blank. When processing aluminum castings of different thicknesses, the number of rotations of the micro motor 71 can be adjusted through the controller 4 (e.g., each rotation corresponds to the movement of the lead screw 72 by 1mm) to precisely control the height of the lifting plate 79. There is no need to replace hardware components, and the changeover time can be shortened to less than 3 minutes.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] Working principle: When the height of the lifting plate 79 needs to be adjusted, the operator starts the micro motor 71 through the controller 4, and its output shaft drives the lead screw 72 to rotate. Since the moving block 73 is threadedly connected to the lead screw 72, the rotation of the lead screw 72 is converted into the linear motion of the moving block 73. The moving block 73 pushes the sliding ring 77 to slide on the fixed rod 76 through the symmetrically distributed L-shaped rods 74, and then drives the lifting plate 79 to move up and down in the lifting groove 710 of the stamping groove 6 through the connecting rod 78. The two ends of the fixed rod 76 are fixed to the outside of the stamping groove 6 through the connecting plates 75 to ensure the straightness of the sliding ring 77 when it moves. The symmetrically distributed L-shaped rods 74 and connecting rod 78 structure make the lifting plates 79 on both sides move synchronously and avoid tilting. When the lifting plate 79 reaches the target height, the micro motor 71 stops rotating, and the self-locking characteristic (trapezoidal thread design) of the lead screw 72 can prevent the lifting plate 79 from sliding down due to gravity, ensuring the stability of the position during pre-pressing.

[0038] When the piston rod 52 drives the stamping plate 53 downward, the transmission rod 87 fixed to the outside of the piston rod 52 descends synchronously, bringing the second magnetic pole disk 88 close to the first magnetic pole disk 86 of the protective plate 84. Since both are magnetic poles of the same name (e.g., both are N poles), the mutual repulsion force pushes the protective plate 84 to overcome the elastic force of the return spring 85 and slide upward along the slide rod 83 in the moving groove 82 until it completely blocks the openings on both sides of the stamping groove 6, forming a physical protective barrier. After stamping is completed, the piston rod 52 returns to its starting position, and the second magnetic pole disk 88 moves away from the first magnetic pole disk 86, and the repulsive force disappears. The return spring 85 releases its elastic potential energy, pulling the slide rod 83 and the protective plate 84 back to their initial positions, exposing the operating area of ​​the stamping groove 6. Throughout the process, the non-contact transmission between the magnetic poles avoids mechanical wear, and the lifting and lowering of the protective plate 84 is synchronized with the stamping action, requiring no additional power source, with a response time of <0.5 seconds.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A pre-pressing machine for aluminum castings, characterized in that, Includes a base (1), a support rod (2) is fixedly connected to the top of the base (1), a top plate (3) is fixedly connected to the top of the support rod (2), a controller (4) is provided on the outside of the base (1), a stamping mechanism (5) is provided on the top of the top plate (3), a stamping groove (6) is fixedly connected to the top of the base (1), and a lifting mechanism (7) is provided on the outside of the stamping groove (6). The stamping mechanism (5) includes a hydraulic cylinder (51), a piston rod (52) is fixedly connected to the bottom of the hydraulic cylinder (51), and a stamping plate (53) is fixedly connected to the bottom of the piston rod (52). The lifting mechanism (7) includes a micro motor (71), a lead screw (72) is fixedly connected to the top output end of the micro motor (71), a moving block (73) is threadedly connected to the outer side of the lead screw (72), an L-shaped rod (74) is fixedly connected to the outer side of the moving block (73), a connecting plate (75) is fixedly connected to both sides of the stamping groove (6), a fixed rod (76) is fixedly connected between the connecting plates (75), a sliding ring (77) is slidably connected to the outer side of the fixed rod (76), a connecting rod (78) is fixedly connected to the outer side of the sliding ring (77), a lifting plate (79) is fixedly connected to the outer side of the connecting rod (78), and a lifting groove (710) is opened in the side wall of the stamping groove (6).

2. The aluminum casting pre-pressing machine according to claim 1, characterized in that, The base (1) is provided with a protective mechanism (8) on its top. The protective mechanism (8) includes a stabilizing plate (81). The stabilizing plate (81) has a moving groove (82) inside. A sliding rod (83) is slidably engaged inside the moving groove (82). A protective plate (84) is fixedly connected to the top of the sliding rod (83). A return spring (85) is fixedly connected to the outside of the sliding rod (83). A first magnetic pole disk (86) is fixedly connected to the outside of the protective plate (84). A transmission rod (87) is fixedly connected to the outside of the piston rod (52). A second magnetic pole disk (88) is fixedly connected to the bottom of the transmission rod (87).

3. The aluminum casting pre-pressing machine according to claim 1, characterized in that, The top plate (3) is fixedly connected to the top of the base (1) by the support rod (2), the hydraulic cylinder (51) is fixedly connected directly above the top plate (3), and the stamping plate (53) is movably connected directly above the stamping groove (6) by the piston rod (52).

4. The aluminum casting pre-pressing machine according to claim 1, characterized in that, The micro motor (71) is fixedly connected to the outside of the stamping groove (6), and the moving block (73) is slidably connected to the outside of the stamping groove (6) via the lead screw (72).

5. The aluminum casting pre-pressing machine according to claim 1, characterized in that, The L-shaped rods (74) are symmetrically distributed on the outside of the moving block (73), and the end of the L-shaped rods (74) away from the moving block (73) is fixedly connected to the outside of the sliding ring (77).

6. The aluminum casting pre-pressing machine according to claim 1, characterized in that, The lifting grooves (710) are symmetrically distributed in the side wall of the stamping groove (6), the connecting rod (78) is slidably connected inside the lifting grooves (710), and the lifting plate (79) is movably connected inside the stamping groove (6).

7. The aluminum casting pre-pressing machine according to claim 2, characterized in that, The stabilizing plates (81) are symmetrically distributed on the top of the base (1), the protective plate (84) is slidably connected to the outside of the stamping groove (6) via the slide rod (83), and the end of the reset spring (85) away from the slide rod (83) is fixedly connected to the inner wall of the moving groove (82).

8. The aluminum casting pre-pressing machine according to claim 2, characterized in that, The protective plate (84) is symmetrically distributed on the outside of the stamping groove (6). The transmission rod (87) and the second magnetic pole disk (88) are symmetrically distributed on the outside of the piston rod (52). The second magnetic pole disk (88) and the first magnetic pole disk (86) are magnetic poles of the same name. When the stamping plate (53) is located inside the stamping groove (6), the second magnetic pole disk (88) is located outside the first magnetic pole disk (86).

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