A locking device for magnesium alloy semi-solid injection molding

Abstract

The utility model relates to magnesium alloy processing technical field discloses a kind of locking die devices for magnesium alloy semi-solid injection molding, including workbench, the upper surface of workbench is fixedly installed with mounting bracket, the upper surface of mounting bracket is fixedly installed with first hydraulic assembly, the lower end of first hydraulic assembly is penetrated to the below of mounting bracket, the upper surface of workbench is fixedly installed with lower mould, auxiliary stripping mechanism is set on workbench, auxiliary stripping mechanism includes push plate and hydraulic lifting platform, the upper surface of workbench is provided with guide slot, push plate is slidably installed in the inside of guide slot, by the cooperation of push plate and threaded rod, motor, mould is moved and uninstalled, the setting of rotary drum reduces the friction force of workbench when mould moves, make movement more smooth, hydraulic lifting platform drives mould to stably lift in stripping process, avoid shaking, tilt, guarantee the safety of mould and equipment, it is favorable to the efficient, safe replacement of magnesium alloy forming mould.

Description

Technical Field

[0001] This utility model relates to the field of magnesium alloy processing technology, specifically to a mold clamping device for semi-solid injection molding of magnesium alloys. Background Technology

[0002] Magnesium alloys are alloys formed by adding elements such as aluminum, zinc, and manganese to magnesium as the base metal. They are among the lightest structural materials among practical metals, with a density of only 1.7-1.8 g / cm³. 3 Magnesium alloys are about 2 / 3 the weight of aluminum and 1 / 4 the weight of steel. Their core advantages lie in their high specific strength (strength-to-weight ratio) and high specific stiffness, far exceeding some aluminum alloys and steels. They also have excellent shock absorption (shock absorption capacity is 100 times that of aluminum) and casting performance, and can be die-cast into complex parts with thin walls of 0.5mm. However, magnesium alloys have poor corrosion resistance and are susceptible to corrosion in humid environments, which requires surface treatment to improve their properties. They also have a certain degree of flammability, requiring special protection during processing. According to the processing method, they are divided into wrought magnesium alloys (suitable for rolling and forging) and cast magnesium alloys (suitable for die casting). They are widely used in aerospace (aircraft parts), automobiles (lightweight parts), 3C electronics (shell frames) and other fields, and are key materials for lightweight technology. Magnesium alloy semi-solid injection molding is an advanced molding technology based on the semi-solid metal (SSM) processing principle.

[0003] Currently, when injection molding semi-solid magnesium alloys, the special rheological properties of magnesium alloys in the semi-solid (solid-liquid coexistence) state are utilized to achieve efficient and high-precision part molding. However, after a period of use, the molds used for semi-solid injection molding of magnesium alloys will experience a decrease in precision due to wear (such as scratches on the cavity surface and gate wear) and thermal fatigue (cracks caused by repeated heating and cooling). At this time, it is necessary to replace the mold with a new one or repair the mold to ensure the dimensional accuracy and surface quality of the product. When replacing the mold, because the mold is heavy, it is necessary to use a lifting tool such as a manual hoist to unload it. If the lifting speed is uneven during the unloading of the mold, the mold is prone to shaking and tilting. Especially at the moment the mold is separated from the equipment template, if the center of gravity shifts, it may hit the equipment or the ground, causing damage to the mold cavity and deformation of equipment parts, which is not conducive to the replacement of magnesium alloy molding molds. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a clamping device for magnesium alloy semi-solid injection molding. This device solves the problem that when replacing molds, due to their heavy weight, lifting tools such as manual hoists are needed to unload them. If the lifting speed is uneven during unloading, the mold is prone to shaking and tilting. Especially at the moment the mold detaches from the equipment template, if the center of gravity shifts, it may collide with the equipment or the ground, causing damage to the mold cavity and deformation of equipment parts, which is not conducive to the replacement of magnesium alloy molding molds.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a clamping device for semi-solid injection molding of magnesium alloy, comprising a worktable, an mounting frame fixedly mounted on the upper surface of the worktable, a first hydraulic component fixedly mounted on the upper surface of the mounting frame, the lower end of the first hydraulic component extending through to the bottom of the mounting frame, and a lower mold fixedly mounted on the upper surface of the worktable.

[0008] An auxiliary mold-unloading mechanism is set on the worktable. The auxiliary mold-unloading mechanism includes a push plate and a hydraulic lifting platform. A guide groove is provided on the upper surface of the worktable. The push plate is slidably installed inside the guide groove. The upper end of the push plate is in contact with the front surface of the lower mold. Two first mounting grooves are provided on the upper surface of the worktable. Multiple rotating cylinders are rotatably installed inside the two first mounting grooves. The hydraulic lifting platform is installed on the rear surface of the worktable.

[0009] Preferably, the auxiliary unmolding mechanism further includes a second hydraulic component, and a second mounting groove is provided on the rear surface of the worktable, and the second hydraulic component is fixedly installed inside the second mounting groove.

[0010] Preferably, four connecting rods are threaded onto the rear surface of the worktable, and the hydraulic lifting platform is connected to the worktable through the four connecting rods.

[0011] Preferably, a connecting plate is fixedly installed on the telescopic end of the hydraulic cylinder on the first hydraulic assembly, and an upper mold is fixedly installed on the lower surface of the connecting plate.

[0012] Preferably, a threaded rod is rotatably installed on the inner wall of the guide groove, the threaded rod is threadedly connected to the push plate, and a motor is fixedly installed at the front end of the worktable. The output end of the motor rotates through the interior of the guide groove, and the motor is fixedly connected to the threaded rod.

[0013] Preferably, injection pipes are fixedly installed on both the front and rear surfaces of the lower mold.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a clamping device for semi-solid injection molding of magnesium alloys, which has the following advantages:

[0016] 1. The mold clamping device for semi-solid injection molding of magnesium alloy uses the cooperation of push plate, threaded rod and motor to move and unload the mold. The setting of the rotating cylinder reduces the friction between the mold and the worktable when moving, making the movement smoother. The hydraulic lifting platform drives the mold to rise and fall steadily during the mold unloading process, avoiding shaking and tilting, ensuring the safety of the mold and equipment, and facilitating the efficient and safe replacement of magnesium alloy molding dies. Attached Figure Description

[0017] Figure 1 This is a top view schematic diagram of the overall structure of the clamping device for semi-solid injection molding of magnesium alloy according to this utility model;

[0018] Figure 2 This is a schematic diagram of the overall rear view of the clamping device for semi-solid injection molding of magnesium alloy according to this utility model;

[0019] Figure 3 This is a schematic diagram of the internal cross-sectional side view of the clamping device for semi-solid injection molding of magnesium alloy according to this utility model;

[0020] Figure 4 This is a cross-sectional view of the workbench of this utility model.

[0021] In the diagram: 1. Workbench; 2. Mounting frame; 3. First hydraulic component; 4. Lower mold; 5. Push plate; 6. Hydraulic lifting platform; 7. Guide groove; 8. First mounting groove; 9. Rotary drum; 10. Second hydraulic component; 11. Second mounting groove; 12. Connecting rod; 13. Connecting plate; 14. Upper mold; 15. Threaded rod; 16. Motor; 17. Injection pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a new technical solution: a clamping device for semi-solid injection molding of magnesium alloy, including a worktable 1, an mounting frame 2 fixedly installed on the upper surface of the worktable 1, a first hydraulic component 3 fixedly installed on the upper surface of the mounting frame 2, the lower end of the first hydraulic component 3 extending through to the bottom of the mounting frame 2, and a lower mold 4 fixedly installed on the upper surface of the worktable 1.

[0024] An auxiliary mold-unloading mechanism is set on the workbench 1. The auxiliary mold-unloading mechanism includes a push plate 5 and a hydraulic lifting platform 6. A guide groove 7 is provided on the upper surface of the workbench 1. The push plate 5 is slidably installed inside the guide groove 7. The upper end of the push plate 5 is in contact with the front surface of the lower mold 4. Two first mounting grooves 8 are provided on the upper surface of the workbench 1. Multiple rotating cylinders 9 are rotatably installed inside the two first mounting grooves 8. The hydraulic lifting platform 6 is installed on the rear surface of the workbench 1.

[0025] Furthermore, the auxiliary unmolding mechanism also includes a second hydraulic component 10. A second mounting groove 11 is provided on the rear surface of the worktable 1, and the second hydraulic component 10 is fixedly installed inside the second mounting groove 11.

[0026] Furthermore, the mold is moved and unloaded through the cooperation of the push plate 5, the threaded rod, and the motor. The rotating drum 9 reduces the friction between the mold and the worktable during movement, making the movement smoother. The hydraulic lifting platform 6 drives the mold to rise and fall steadily during the unloading process, avoiding shaking and tilting, ensuring the safety of the mold and equipment, and facilitating the efficient and safe replacement of magnesium alloy forming molds.

[0027] Furthermore, four connecting rods 12 are threaded onto the rear surface of the worktable 1, and the hydraulic lifting platform 6 is connected to the worktable 1 through the four connecting rods 12.

[0028] Furthermore, a connecting plate 13 is fixedly installed on the telescopic end of the hydraulic cylinder on the first hydraulic component 3, and an upper mold 14 is fixedly installed on the lower surface of the connecting plate 13.

[0029] Furthermore, a threaded rod 15 is rotatably installed on the inner wall of the guide groove 7. The threaded rod 15 is threadedly connected to the push plate 5. A motor 16 is fixedly installed at the front end of the worktable 1. The output end of the motor 16 rotatably penetrates into the interior of the guide groove 7. The motor 16 is fixedly connected to the threaded rod 15.

[0030] Furthermore, injection pipes 17 are fixedly installed on both the front and rear surfaces of the lower mold 4.

[0031] Furthermore, when the magnesium alloy mold needs to be replaced, firstly, the first hydraulic component 3 will drive the upper mold 14 to move downwards until it contacts the lower mold 4. Then, the bolts between the upper mold 14 and the connecting plate 13 are removed, detaching the connection between the upper mold 14 and the first hydraulic component 3. At the same time, the bolts between the lower mold 4 and the worktable 1 are removed. Afterwards, the lower mold 4 and the upper mold 14 are fixed together with screws, and then the two are removed together with the help of the auxiliary mold removal mechanism. During the mold removal operation, the motor 16 is started, and the motor 16 drives the threaded rod 15 to rotate. Since the threaded rod 15 is threadedly connected to the push plate 5, the push plate 5 will... The guide groove 7 slides, and its upper end pushes the lower mold 4. It cooperates with the rotating cylinder 9 in the first mounting groove 8 on the worktable 1 to rotate, making it easier to move the lower mold 4 and the upper mold 14 that are fixed together. The hydraulic lifting platform 6 is installed on the rear surface of the worktable 1 through four connecting rods 12, which can provide support when the mold is moved to a suitable position, making it easy to transfer the mold. When the mold moves to the upper surface of the hydraulic lifting platform, it drives the mold to move downward to the position of the second hydraulic component 10. Then the second hydraulic component 10 pushes the mold. At this time, a trolley or forklift can be placed behind the hydraulic lifting platform 6 to unload and transport the mold.

[0032] Structural Description: Workbench 1: As the basic support component of the device, it supports components such as mold 4 and mounting frame 2, and provides a stable operating platform. Guide grooves 7 and mounting grooves are provided on it to meet the installation and operation requirements of each component.

[0033] Mounting bracket 2: Fixed on the workbench 1, used to install the first hydraulic component 3, providing it with stable support, ensuring the stability of the first hydraulic component 3 during operation, and enabling precise actions such as mold locking.

[0034] First hydraulic component 3: Installed on the mounting frame 2, it drives the connecting plate 13 and the upper mold 14 to rise and fall through the telescopic end, thereby realizing the locking of mold 4 and 14 and driving 14 to move. It is the power source for locking and unloading mold.

[0035] Lower mold 4: Fixed on the worktable 1, it cooperates with the upper mold 14 to complete the magnesium alloy injection molding. The injection pipes 17 on the front and rear surfaces are used to inject raw materials and are key components of the molding process.

[0036] Push plate 5: It is slidably installed in the guide groove 7 and is driven to slide by the threaded rod 15. Its upper end contacts the lower mold 4 and can push the lower mold 4 to move, assisting in the mold displacement during demolding.

[0037] Hydraulic lifting platform 6: Installed on the rear surface of workbench 1 via connecting rod 12, it can lift and support the mold, and work with the second hydraulic component 10 to push the mold to the transport equipment to assist in unloading and handling;

[0038] Guide groove 7: It is set on the worktable 1 to provide sliding guidance for the push plate 5, restrict the movement trajectory of the push plate 5, ensure that the push plate 5 smoothly pushes the mold 4, and ensure the stability of the mold unloading action;

[0039] First mounting slot 8: There are two in total, located on the workbench 1, and the rotating cylinder 9 is installed inside. The rotating cylinder 9 is provided with mounting space so that it can rotate flexibly and reduce the friction when the mold moves.

[0040] Rotary drum 9: Rotarily installed in the first mounting groove 8, it contacts the mold when it moves, converting sliding friction into rolling friction, reducing the resistance to mold movement, and facilitating mold relocation;

[0041] Second hydraulic component 10: Installed in the second mounting slot 11, it can extend and push the mold after it has been lowered by the hydraulic lifting platform 6 to the transport equipment, thus assisting in the transfer of the mold.

[0042] Second mounting slot 11: It is opened on the rear surface of the worktable 1 and is used to fix and install the second hydraulic component 10, providing it with an installation position to ensure its stability and accurate pushing direction during operation.

[0043] Connecting rod 12: There are four in total. They are threaded to connect the workbench 1 and the hydraulic lifting platform 6, and securely install the hydraulic lifting platform 6 on the workbench 1 to ensure its load-bearing capacity and stability during lifting.

[0044] Connecting plate 13: Fixed to the telescopic end of the first hydraulic component 3, with the upper mold 14 installed on its lower surface, serving to connect the first hydraulic component 3 and the upper mold 14, and transmitting power to drive the 14 to move;

[0045] Upper mold 14: Fixed under the connecting plate 13, it works with the lower mold 4 to lock the mold and achieve molding. When unmolding, it can be fixed with 4 and removed together with the auxiliary mechanism. It is a key component for molding.

[0046] Threaded rod 15: Rotatably installed in the guide groove 7, threadedly connected to the push plate 5, driven to rotate by the motor 16, which drives the push plate 5 to slide along the guide groove 7, providing power to the push plate 5;

[0047] Motor 16: Fixed at the front end of the worktable 1, with the output end connected to the threaded rod 15, driving the threaded rod 15 to rotate, providing rotational power to the threaded rod 15, and indirectly driving the push plate 5 to move;

[0048] Injection pipe 17: There are two in total, fixed on the front and rear surfaces of the lower mold 4, used to inject magnesium alloy raw material into the cavity formed by the upper and lower molds. It is the channel for the raw material to enter the mold and ensures the supply of molding raw material.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping device for semi-solid injection molding of magnesium alloy, comprising a worktable (1), a mounting frame (2) fixedly mounted on the upper surface of the worktable (1), a first hydraulic component (3) fixedly mounted on the upper surface of the mounting frame (2), the lower end of the first hydraulic component (3) extending through to the bottom of the mounting frame (2), characterized in that: The lower mold (4) is fixedly installed on the upper surface of the workbench (1); The auxiliary mold removal mechanism is set on the workbench (1). The auxiliary mold removal mechanism includes a push plate (5) and a hydraulic lifting platform (6). The upper surface of the workbench (1) is provided with a guide groove (7). The push plate (5) is slidably installed inside the guide groove (7). The upper end of the push plate (5) is in contact with the front surface of the lower mold (4). The upper surface of the workbench (1) is provided with two first mounting grooves (8). Multiple rotating cylinders (9) are rotatably installed inside the two first mounting grooves (8). The hydraulic lifting platform (6) is installed on the rear surface of the workbench (1).

2. The clamping device for semi-solid injection molding of magnesium alloy according to claim 1, characterized in that: The auxiliary unmolding mechanism also includes a second hydraulic component (10). A second mounting groove (11) is provided on the rear surface of the worktable (1). The second hydraulic component (10) is fixedly installed inside the second mounting groove (11).

3. The clamping device for semi-solid injection molding of magnesium alloy according to claim 1, characterized in that: The rear surface of the workbench (1) is threaded with four connecting rods (12), and the hydraulic lifting platform (6) is connected to the workbench (1) through the four connecting rods (12).

4. The clamping device for semi-solid injection molding of magnesium alloy according to claim 1, characterized in that: A connecting plate (13) is fixedly installed on the telescopic end of the hydraulic cylinder on the first hydraulic component (3), and an upper mold (14) is fixedly installed on the lower surface of the connecting plate (13).

5. The clamping device for semi-solid injection molding of magnesium alloy according to claim 1, characterized in that: A threaded rod (15) is rotatably installed on the inner wall of the guide groove (7). The threaded rod (15) is threadedly connected to the push plate (5). A motor (16) is fixedly installed at the front end of the worktable (1). The output end of the motor (16) rotates through the interior of the guide groove (7). The motor (16) is fixedly connected to the threaded rod (15).

6. The clamping device for semi-solid injection molding of magnesium alloy according to claim 1, characterized in that: The lower mold (4) has injection pipes (17) fixedly installed on both the front and rear surfaces.

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