Automobile key accessory die-casting die and die-casting method thereof

Abstract

The invention relates to the technical field of automobile part die-casting, in particular to an automobile key accessory die-casting die and a die-casting method thereof. The die assembly comprises an upper die installed on the lifting platform and a lower die installed in the containing cavity of the workbench. Wherein the lower die comprises two rectangular through grooves; two rectangular mold cores which are arranged in parallel are formed on the upper mold, and each rectangular mold core is provided with a forming groove; the horizontal pushing mechanism comprises a horizontal driving mechanism and a pushing part; the jacking mechanism is mounted in the accommodating cavity, is positioned below the lower mold and is used for jacking the lower mold to a preset height after demolding; and the preset height of the jacking mechanism is configured to enable the two rectangular through grooves of the lower die to be aligned with the two material pushing parts one by one. Through cooperation of the jacking mechanism, the horizontal material pushing mechanism and the lower mold, convenient and efficient demolding and material pushing operation is achieved, the labor intensity is reduced, the automation degree of production is improved, and product damage caused by improper manual operation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting of automotive parts, and particularly to a die-casting mold for automotive key accessories and a die-casting method thereof. Background Art

[0002] Automotive key accessories mainly include the following: key molds, key chips, code readers, devices for reading key chip information, programmers, and key metal buttons, etc. During production, die-casting manufacturing processes are often required for these accessories.

[0003] In the related art, a die-casting mold for automotive key accessories is disclosed in the patent with the publication number CN215431471U, which includes a die-casting upper mold for pouring and shaping molten metal. There is a pouring gate at the top of the die-casting upper mold, and a liquid injection connection groove at the bottom. Upper cavities are arranged on both sides of the liquid injection connection groove; an installation base for installing and fixing the die-casting lower mold, and a die-casting lower mold is fixedly installed at the top of the installation base; two lower cavities are provided at the top of the die-casting lower mold. This die-casting mold for automotive key accessories pushes the metal shell of the automotive key out from the top of the core by four push rods, making the metal shell separate from the core, which is more convenient for demolding the metal shell. The push rods rise slowly and evenly, without damaging the metal shell, and it is also more convenient for the assembly and shaping of the metal shell. However, the above mold still has the following problems: only one part can be formed in a single mold closing, and the equipment utilization rate is insufficient; relying on four push rods to push the metal shell of the automotive key out from the top of the core for demolding easily causes product deformation or mold wear; manual part taking is required, which poses safety hazards and affects the continuous production rhythm. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the object of the present invention is to provide a die-casting mold for automotive key accessories and a die-casting method thereof. The cooperative design of the upper mold and the lower mold of the present invention makes the shaping of automotive key accessories more accurate. Two parallel rectangular through grooves and rectangular mold cores can simultaneously perform die-casting forming of multiple accessories, improving production efficiency; at the same time, the cooperation of the jacking mechanism, the horizontal feeding mechanism and the lower mold realizes convenient and efficient demolding and feeding operations, reduces labor intensity, improves the degree of automation of production, and reduces product damage caused by improper manual operation.

[0005] The object of the present invention is achieved by the following technical solutions:

[0006] The first aspect of the present invention provides a die-casting mold for automotive key accessories, including:

[0007] The supporting structure includes a workbench with a receiving cavity, four vertical load-bearing columns installed at the four corners of the workbench, and a mounting platform installed at the top of the four vertical load-bearing columns;

[0008] A lifting drive mechanism, comprising a hydraulic drive assembly fixed to a mounting platform and a lifting platform connected to the hydraulic drive assembly;

[0009] Also includes:

[0010] The mold assembly comprises an upper mold installed on the lifting platform and a lower mold installed in the accommodating cavity of the workbench; wherein the lower mold comprises two parallel rectangular through grooves with open top surfaces; the bottom surface of the upper mold extends downward to form two parallel rectangular mold cores, and a molding groove is arranged on the bottom surface of each rectangular mold core;

[0011] The horizontal material pushing mechanism comprises a horizontal driving mechanism installed on the workbench and located on one side of the lower die, and two material pushing members respectively connected to the horizontal driving mechanism by transmission;

[0012] The lifting mechanism is installed in the accommodating cavity and located below the lower mold, and is used to lift the lower mold to a preset height after demolding; wherein the preset height of the lifting mechanism is configured to align the two rectangular through grooves of the lower mold with the two pushers one by one.

[0013] In the first aspect of the present invention, as an optional embodiment, the horizontal driving mechanism includes:

[0014] A drive motor is installed on the workbench as a power source;

[0015] A transmission gear assembly connected to an output shaft of a driving motor;

[0016] Two screw rods are arranged in parallel, one end of which is connected to the transmission gear assembly, and the other end of which extends to the outside of the rectangular through slot of the lower die;

[0017] Wherein, the pusher is a threaded sleeve, two threaded sleeves are respectively threadedly connected to two screw rods, the lower end of the threaded sleeve forms a sliding block, and a sliding groove is correspondingly arranged on the workbench to achieve sliding fit.

[0018] In the first aspect of the present invention, as an optional embodiment, the lifting mechanism includes a cylinder and a support plate connected to the piston rod of the cylinder; the cylinder is installed in the accommodating cavity, the piston rod is arranged in a vertical direction, and the support plate is installed on the top of the piston rod and is located below the lower mold.

[0019] In the first aspect of the present invention, as an optional embodiment, a limiting groove is formed on the bottom surface of the lower mold, and limiting portions matching the limiting groove are respectively formed at both ends of the support plate.

[0020] In the first aspect of the present invention, as an alternative embodiment, it further includes a buffer assembly. The buffer assembly includes a plurality of limit posts respectively installed in the accommodation cavity and a plurality of springs. The plurality of springs are sleeved outside the plurality of limit posts one by one. The top of the spring is connected to the bottom surface of the lower mold, and its bottom is connected to the bottom wall of the accommodation cavity. When the hydraulic drive assembly drives the upper mold to descend, it drives the rectangular die core to contact the inner bottom wall of the rectangular through groove and compress the plurality of springs until the rectangular through groove contacts the limit posts to complete mold clamping.

[0021] In the first aspect of the present invention, as an alternative embodiment, in the mold-clamped state, the whole of the lower mold is completely received in the accommodation cavity, and the shape and size of the lower mold are adapted to the shape and size of the accommodation cavity to prevent the rectangular through groove from shifting or shaking horizontally during die casting.

[0022] In the first aspect of the present invention, as an alternative embodiment, placing grooves are respectively provided on both sides of the accommodation cavity on the workbench, and the two placing grooves are respectively communicated with the accommodation cavity. It further includes a heat dissipation mechanism, and the heat dissipation mechanism includes two groups of symmetrically arranged heat dissipation components.

[0023] The heat dissipation component includes a coolant storage tank, a circulation pump, a liquid inlet transmission pipe assembly, a liquid return transmission pipe assembly and a heat dissipation plate.

[0024] The coolant storage tank is installed in the placing groove.

[0025] The circulation pump is installed in the coolant storage tank.

[0026] The heat dissipation plate is made of copper alloy material and has a microchannel structure inside. The heat dissipation plate is installed between the spring and the lower mold.

[0027] The liquid inlet end of the liquid inlet transmission pipe assembly is connected to the liquid outlet end of the circulation pump, its liquid outlet end is connected to the inlet end of the heat dissipation plate, and the liquid outlet end of the heat dissipation plate is connected to the coolant storage tank through the liquid return transmission pipe assembly.

[0028] In the first aspect of the present invention, as an alternative embodiment,

[0029] The liquid inlet transmission pipe assembly includes a liquid inlet main pipe connected to the liquid outlet end of the circulation pump and a plurality of liquid inlet transmission hoses respectively connected to the liquid inlet main pipe. The liquid outlet ends of the respective liquid inlet transmission hoses are respectively connected to the liquid inlet ends of the heat dissipation plate.

[0030] The liquid return transmission pipe assembly includes a plurality of liquid return transmission hoses. The liquid inlet ends of the plurality of liquid return transmission hoses are respectively connected to the liquid outlet ends of the heat dissipation plate, and their liquid outlet ends are respectively connected to the liquid return ends of the coolant storage tank.

[0031] In the first aspect of the present invention, as an alternative embodiment, it further includes a central controller installed on the workbench; the signal output end of the central controller is respectively connected to the signal input ends of the lifting drive mechanism, the circulation pump, the jacking mechanism, and the horizontal feeding mechanism.

[0032] The second aspect of the present invention provides a die-casting method using the die-casting mold for automotive key accessories in the first aspect, including the following steps:

[0033] S10. Mold closing step: Start the hydraulic drive assembly, and the hydraulic drive assembly drives the lifting platform to descend, so that the rectangular mold core of the upper mold gradually embeds into the rectangular through groove of the lower mold until the upper mold and the lower mold are completely closed, forming a molding cavity for the automotive key accessories.

[0034] S20. Die-casting step: Inject the molten metal material into the molding cavity through the injection system. Under the action of pressure, the metal material fills the entire molding cavity to complete the die-casting molding of the automotive key accessories.

[0035] S30. Cooling step: After die-casting is completed, cool the lower mold through the heat dissipation mechanism.

[0036] S40. Mold opening step: After cooling is completed, the hydraulic drive assembly drives the lifting platform to rise, separating the upper mold from the lower mold to achieve the mold opening operation.

[0037] S50. Jacking step: After mold opening, start the jacking mechanism, and the jacking mechanism jacks the lower mold to a preset height so that the two rectangular through grooves of the lower mold are aligned with the two pushing members one by one.

[0038] S60. Pushing step: Start the driving motor, and the driving motor drives the two lead screws to rotate synchronously through the transmission gear assembly. Under the drive of the lead screw threads, the two threaded sleeves move axially along the sliding grooves under the guiding action of the sliding blocks and the sliding grooves, pushing the molded automotive key accessories out of the rectangular through grooves of the lower mold to complete the entire production process.

[0039] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0040] The support structure of the present invention provides a stable basic framework for the entire mold. The accommodation cavity of the workbench is used to accommodate the lower mold, and the vertical load-bearing columns and installation platform ensure the overall stability. In the lifting drive mechanism, the hydraulic drive component drives the lifting platform to move up and down through the principle of hydraulic transmission, thereby driving the upper mold to approach or move away from the lower mold. In the mold assembly, the rectangular mold core of the upper mold cooperates with the rectangular through groove of the lower mold. When the hydraulic drive component drives the upper mold to descend, the rectangular mold core is inserted into the rectangular through groove to complete mold closing and form a molding cavity for die-casting automotive key accessories; when it rises, demolding is achieved. The jacking mechanism is activated after demolding to jack the lower mold to a preset height, aligning the rectangular through groove of the lower mold with the pushing member for convenient pushing operation. After demolding, the horizontal pushing mechanism drives the pushing member by the horizontal drive mechanism to push the molded accessories out of the lower mold. In this way, the present invention can simultaneously perform die-casting molding of multiple accessories through two parallel rectangular through grooves and rectangular mold cores, improving production efficiency. The cooperation of the rectangular through groove, horizontal pushing mechanism, and jacking mechanism realizes convenient and efficient demolding and horizontal pushing operations. The jacking mechanism jacks the lower mold to a preset height to align the rectangular through groove with the pushing member, and the horizontal drive mechanism drives the pushing member to push out the molded accessories, without excessive manual intervention, reducing labor intensity, improving the degree of production automation, and also reducing product damage caused by improper manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0042] Figure 1 It is a flowchart of the die-casting method of the present invention;

[0043] Figure 2 It is a circuit principle block diagram of the present invention;

[0044] Figure 3 It is a schematic structural diagram of the die-casting mold for automotive key accessories of the present invention;

[0045] Figure 4 It is a schematic structural diagram of the lifting drive mechanism and the upper mold of the present invention;

[0046] Figure 5 It is an assembled structural diagram of the horizontal pushing mechanism, jacking mechanism, and lower mold of the present invention;

[0047] Figure 6 It is a split structural diagram of the horizontal pushing mechanism, jacking mechanism, and lower mold of the present invention;

[0048] Figure 7 It is a schematic structural diagram of the upper mold of the present invention;

[0049] Figure 8 It is a schematic structural diagram of the lower die of the present invention.

[0050] In the figure,

[0051] 10. Support structure; 11. Workbench; 111. Accommodation cavity; 112. Sliding groove; 113. Placing groove; 114. Feeding channel; 12. Vertical load-bearing column; 13. Installation platform;

[0052] 20. Lifting drive mechanism; 21. Hydraulic drive assembly; 22. Lifting platform;

[0053] 30. Mold assembly; 31. Upper die; 311. Rectangular mold core; 312. Forming groove; 32. Lower die; 321. Rectangular through groove; 322. Limiting groove;

[0054] 40. Horizontal pushing mechanism; 41. Pushing member; 411. Threaded sleeve; 412. Sliding block; 413. Pushing part; 42. Driving motor; 43. Transmission gear assembly; 44. Lead screw;

[0055] 50. Jacking mechanism; 51. Piston rod; 52. Support plate; 521. Limiting part;

[0056] 60. Buffer assembly; 61. Limiting column; 62. Spring;

[0057] 70. Heat dissipation mechanism; 71. Coolant storage tank; 72. Liquid inlet transmission pipe assembly; 73. Liquid return transmission pipe assembly; 74. Heat dissipation plate; 75. Circulation pump;

[0058] 80. Material collection box;

[0059] 90. Central controller. Detailed implementation manners

[0060] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments. Except as otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0061] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically and precisely defined.

[0062] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected", "communicated", and "connected" should be understood in a broad sense. For example, it can be a direct connection, or a connection through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0063] The terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0064] Embodiment 1:

[0065] Please refer to Figure 1-8 As shown in the figure, this embodiment provides a die-casting mold for automobile key accessories, which includes a support structure 10, a lifting drive mechanism 20, a mold assembly 30, a horizontal feeding mechanism 40, and a jacking mechanism 50;

[0066] Specifically, the support structure 10 includes a workbench 11 having a receiving cavity 111, four vertical load-bearing columns 12 installed at the four corners of the workbench 11, and a mounting platform 13 installed at the tops of the four vertical load-bearing columns 12;

[0067] Specifically, the lifting drive mechanism 20 includes a hydraulic drive assembly 21 fixed to the mounting platform 13 and a lifting platform 22 connected to the hydraulic drive assembly 21;

[0068] Specifically, the mold assembly 30 includes an upper mold 31 installed on the lifting platform 22 and a lower mold 32 installed in the accommodating cavity 111 of the workbench 11; wherein the lower mold 32 includes two parallel rectangular through grooves 321 with open top surfaces; the bottom surface of the upper mold 31 extends downward to form two parallel rectangular mold cores 311, and a molding groove 312 is provided on the bottom surface of each rectangular mold core 311;

[0069] Specifically, the horizontal push mechanism 40 includes a horizontal driving mechanism installed on the workbench 11 and located on one side of the lower mold 32, and two push members 41 respectively connected to the horizontal driving mechanism by transmission;

[0070] Specifically, the lifting mechanism 50 is installed in the accommodating cavity 111 and is located below the lower mold 32, and is used to lift the lower mold 32 to a preset height after demolding; wherein the preset height of the lifting mechanism 50 is configured to align the two rectangular through grooves 321 of the lower mold 32 with the two pushers 41 one by one.

[0071] On the basis of the above structure, the support structure 10 provides a stable basic framework for the entire mold, the accommodating cavity 111 of the workbench 11 is used to accommodate the lower mold 32, and the vertical load-bearing column 12 and the mounting platform 13 ensure the overall stability. The hydraulic drive assembly 21 in the lifting drive mechanism 20 drives the lifting platform 22 to move up and down through the hydraulic transmission principle, thereby driving the upper mold 31 to approach or move away from the lower mold 32. In the mold assembly 30, the rectangular mold core 311 of the upper mold 31 cooperates with the rectangular through groove 321 of the lower mold 32. When the hydraulic drive assembly 21 drives the upper mold 31 to descend, the rectangular mold core 311 is embedded in the rectangular through groove 321 to complete the mold closing and form a molding cavity for die-casting automobile key accessories (such as metal button accessories); demolding is achieved when it rises. The lifting mechanism 50 is started after demolding, and lifts the lower mold 32 to a preset height, so that the rectangular through groove 321 of the lower mold 32 is aligned with the pusher 41, which is convenient for pushing operation. After demolding, the horizontal pushing mechanism 40 is driven by the horizontal driving mechanism to push the pushing piece 41 to push the molded accessories out of the lower mold 32. In this way, the present invention can perform die-casting of multiple accessories at the same time through two parallel rectangular through grooves 321 and rectangular mold cores 311, thereby improving production efficiency. The cooperation of the rectangular through grooves 321, the horizontal pushing mechanism 40 and the lifting mechanism 50 realizes convenient and efficient demolding and horizontal pushing operations. The lifting mechanism 50 lifts the lower mold 32 to a preset height so that the rectangular through grooves 321 are aligned with the pushing piece 41. The horizontal driving mechanism drives the pushing piece 41 to push the molded accessories out. There is no need for excessive manual intervention, which reduces labor intensity, improves the degree of automation of production, and also reduces product damage caused by improper manual operation.

[0072] Specifically, each rectangular mold core 311 is further provided with a liquid inlet channel communicating with the forming groove 312. The liquid inlet channel is connected to an external liquid injection system through a liquid injection hole provided on the lifting platform 22. The hydraulic drive assembly 21 is a vertically installed hydraulic cylinder.

[0073] In a preferred embodiment, the horizontal drive mechanism includes:

[0074] A drive motor 42, which is installed on the workbench 11 as a power source;

[0075] A transmission gear assembly 43, which is connected to the output shaft of the drive motor 42;

[0076] Two parallel lead screws 44, one end of which is connected to the transmission gear assembly 43 and the other end extends to the outside of the rectangular through groove 321 of the lower mold 32;

[0077] Among them, the pusher 41 is a threaded sleeve 411. The two threaded sleeves 411 are respectively threadedly connected to the two lead screws 44. The lower end of the threaded sleeve 411 forms a sliding block 412. Corresponding sliding grooves 112 are provided on the workbench 11 to achieve sliding fit.

[0078] Based on the above structure, the drive motor 42 serves as a power source. After being powered on, the motor rotor rotates and transmits the power to the transmission gear assembly 43. The transmission gear assembly 43 distributes the power to the two parallel lead screws 44 through gear meshing transmission, causing the lead screws 44 to rotate. Since the pusher 41 is a threaded sleeve 411, which is threadedly connected to the lead screw 44, according to the principle of screw drive, when the lead screw 44 rotates, the threaded sleeve 411 is driven by the thread of the lead screw 44 and is simultaneously restricted by the guiding of the sliding block 412 and the sliding groove 112, and can only move along the axial direction of the sliding groove 112, thereby realizing the pushing action in the horizontal direction and pushing the formed automotive key accessories out of the rectangular through groove 321 of the lower mold 32. This structural design utilizes the stability and accuracy of screw drive, making the pushing process smoother and more accurate, effectively avoiding the shaking or deviation of the threaded sleeve 411 during the pushing process, and thus avoiding damage to the automotive key accessories, ensuring the quality of the product and the reliability of the production process.

[0079] Specifically, the transmission gear assembly 43 includes a gear box and a first gear, a second gear and a third gear installed in the gear box. The first gear and the second gear are respectively fixedly installed on the input ends of the two lead screws 44. The third gear is installed on the output shaft of the drive motor 42. The third gear meshes with the first gear and the second gear respectively. After the drive motor 42 is started, the output shaft drives the third gear to rotate. The third gear synchronously drives the first gear and the second gear through meshing transmission, causing the two lead screws 44 to rotate at the same speed.

[0080] As an alternative, the horizontal driving mechanism can also adopt two hydraulic or pneumatic driving mechanisms, and the two hydraulic or pneumatic driving mechanisms respectively drive the pusher 41 to act, so as to realize the pushing action in the horizontal direction.

[0081] Preferably, a pushing part 413 made of a soft material is arranged at the end of the threaded sleeve 411. In this way, the soft pushing part 413 avoids damages such as scratches and indentations on the surface of the automotive key accessories caused by rigid pushing, effectively protects the appearance quality of the accessories, and reduces the rejection rate; secondly, the flexible contact of the pushing part 413 makes the pushing process smoother, reduces the impact force generated by rigid collision, and avoids situations such as displacement and flipping of the accessories during the pushing process, improving the accuracy and reliability of pushing.

[0082] In a preferred embodiment, the lifting mechanism 50 includes a cylinder and a support plate 52 connected to the piston rod 51 of the cylinder; the cylinder is installed in the accommodation cavity 111, the piston rod 51 is arranged in the vertical direction, and the support plate 52 is installed at the top of the piston rod 51 and is located below the lower die 32.

[0083] Based on the above structure, the cylinder is the core component of the lifting mechanism 50 and is supplied with air by an air source. When the cylinder intakes air, the gas pushes the piston rod 51 to extend in the vertical direction, and the support plate 52 connected to the piston rod 51 rises accordingly, and the support plate 52 jacks up the lower die 32; when the cylinder exhausts air, under the action of gravity, the piston rod 51 retracts and the support plate 52 descends. By controlling the intake and exhaust of the cylinder, the lifting and lowering operations of the lower die 32 are realized, and the lower die 32 is jacked up to a preset height after demoulding, so that the rectangular through groove 321 of the lower die 32 is aligned with the pusher 41. In this way, the present invention utilizes the linear reciprocating motion characteristic of the cylinder to realize the stable lifting of the lower die 32, with a simple structure and reliable action, and can quickly and accurately adjust the lower die 32 to a suitable position, facilitating the subsequent pushing operation and improving the production efficiency.

[0084] In a preferred embodiment, a limiting groove 322 is formed on the bottom surface of the lower die 32, and limiting parts 521 matching the limiting groove 322 are respectively formed at both ends of the support plate 52.

[0085] Based on the above structure, the limiting groove 322 on the bottom surface of the lower mold 32 and the limiting portions 521 at both ends of the support plate 52 cooperate with each other. During the operation of the lifting mechanism 50, when the support plate 52 rises, the limiting portions 521 gradually embed into the limiting groove 322 to accurately limit the position of the lower mold 32 and prevent the lower mold 32 from shifting or shaking in the horizontal direction during the lifting process; during the descent, the limiting portions 521 disengage from the limiting groove 322 to ensure that the lower mold 32 can accurately return to its initial position. The cooperative design of the limiting groove 322 and the limiting portions 521 enhances the stability and positioning accuracy of the lower mold 32 during the lifting process, further improves the reliability of the mold operation, ensures the smooth progress of the material pushing operation, and avoids damage to the accessories or failure of the material pushing caused by the position deviation of the lower mold 32.

[0086] In a preferred embodiment, a buffer assembly 60 is further included. The buffer assembly 60 includes a plurality of limiting posts 61 respectively installed in the accommodating cavity 111 and a plurality of springs 62. The plurality of springs 62 are sleeved outside the plurality of limiting posts 61 one by one. The top of the spring is connected to the bottom surface of the lower mold 32, and its bottom is connected to the bottom wall of the accommodating cavity 111; when the hydraulic driving assembly 21 drives the upper mold 31 to descend, it drives the rectangular mold core 311 to contact the inner bottom wall of the rectangular through groove 321 and compress the plurality of springs 62 until the rectangular through groove 321 contacts the limiting posts 61 to complete the mold closing.

[0087] Based on the above structure, during the process of the hydraulic driving assembly 21 driving the upper mold 31 to descend for mold closing, after the rectangular mold core 311 of the upper mold 31 contacts the rectangular through groove 321 of the lower mold 32, pressure continues to be applied. At this time, the lower mold 32 receives an upward acting force, pushing the springs 62 in the buffer assembly 60 to compress. The limiting posts 61 play a role in restricting the descending position of the lower mold 32. When the rectangular through groove 321 contacts the limiting posts 61, the springs 62 are compressed to a certain extent to complete the mold closing. The springs 62 store elastic potential energy during the compression process. During mold opening, the springs 62 release the elastic potential energy to assist the separation of the upper mold 31 and the lower mold 32 and reduce the load on the hydraulic driving assembly 21. The setting of the buffer assembly 60 can effectively buffer the impact force when the upper mold 31 descends for mold closing, avoid damage to the mold caused by excessive impact force, and extend the service life of the mold; at the same time, the auxiliary mold opening function of the springs 62 reduces the energy consumption of the hydraulic driving assembly 21 and improves the working efficiency and stability of the mold.

[0088] In a preferred embodiment, in the mold closed state, the entire lower mold 32 is received in the accommodating cavity 111, and the shape and size of the lower mold 32 are adapted to the shape and size of the accommodating cavity 111 to prevent the rectangular through groove 321 from shifting or shaking in the horizontal direction during the die casting process.

[0089] On the basis of the above structure, in the mold-closing state, the rectangular through groove 321 of the lower mold 32 is entirely received in the receiving cavity 111 of the workbench 11, and the lower mold 32 is adapted to the shape and size of the receiving cavity 111. Through this tight fitting method, during the die-casting process, the inner wall of the receiving cavity 111 forms a constraint on the rectangular through groove 321, restricting its movement in the horizontal direction, thereby ensuring the stability of the lower mold 32 when subjected to the die-casting pressure. It avoids the offset or shaking of the lower mold 32 in the horizontal direction during the die-casting process, ensures the forming accuracy of the automotive key accessories, improves the product quality, and at the same time reduces the probability of mold wear and failure caused by mold instability, extending the service life of the mold.

[0090] In a preferred embodiment, placing grooves 113 are respectively arranged on both sides of the receiving cavity 111 on the workbench 11, and the two placing grooves 113 are respectively communicated with the receiving cavity 111; further included is a heat dissipation mechanism 70, and the heat dissipation mechanism 70 includes two sets of symmetrically arranged heat dissipation components;

[0091] The heat dissipation component includes a coolant storage tank 71, a circulation pump 75, a liquid inlet transmission pipe assembly 72, a liquid return transmission pipe assembly 73 and a heat dissipation plate 74;

[0092] The coolant storage tank 71 is installed in the placing groove 113;

[0093] The circulation pump 75 is installed in the coolant storage tank 71;

[0094] The heat dissipation plate 74 is made of a copper alloy material and is provided with a micro-channel structure inside. The heat dissipation plate 74 is installed between the spring 62 and the lower mold 32;

[0095] The liquid inlet end of the liquid inlet transmission pipe assembly 72 is connected to the liquid outlet end of the circulation pump 75, its liquid outlet end is connected to the inlet end of the heat dissipation plate 74, and the liquid outlet end of the heat dissipation plate 74 is connected to the coolant storage tank 71 through the liquid return transmission pipe assembly 73.

[0096] Based on the above structure, when the heat dissipation mechanism 70 works, the circulation pump 75 is started to extract the coolant in the coolant storage tank 71 and transport it to the heat dissipation plate 74 through the liquid inlet transmission pipe assembly 72. The heat dissipation plate 74 is made of copper alloy material and is provided with a microchannel structure inside, having good heat conduction performance. The coolant flows in the microchannels, absorbs the heat generated by the lower die 32 during the die-casting process, and reduces the temperature of the lower die 32. The coolant after absorbing heat flows back to the coolant storage tank 71 through the liquid return transmission pipe assembly 73, completing the cyclic heat dissipation process of the coolant. Two symmetrically arranged heat dissipation components work together to ensure uniform heat dissipation of each part of the lower die 32. The lower die 32 is effectively cooled, preventing the lower die 32 from affecting the performance and service life of the mold due to excessive temperature. At the same time, it also helps to improve the forming quality of the automotive key accessories, avoiding problems such as deformation and dimensional deviation of the accessories caused by excessive mold temperature, and ensuring the continuity and stability of the production process.

[0097] In a preferred embodiment, the liquid inlet transmission pipe assembly 72 includes a liquid inlet main pipe connected to the liquid outlet end of the circulation pump 75 and a plurality of liquid inlet transmission hoses respectively connected to the liquid inlet main pipe. The liquid outlet ends of the respective liquid inlet transmission hoses are respectively connected to the liquid inlet ends of the heat dissipation plate 74;

[0098] The liquid return transmission pipe assembly 73 includes a plurality of liquid return transmission hoses. The liquid inlet ends of the plurality of liquid return transmission hoses are respectively connected to the liquid outlet ends of the heat dissipation plate 74, and their liquid outlet ends are respectively connected to the liquid return end of the coolant storage tank 71.

[0099] Based on the above structure, in the liquid inlet transmission pipe assembly 72, the liquid inlet main pipe distributes the coolant pumped out by the circulation pump 75 to a plurality of liquid inlet transmission hoses, and each liquid inlet transmission hose transports the coolant to different liquid inlet ends of the heat dissipation plate 74, enabling the coolant to flow evenly into the microchannels of the heat dissipation plate 74; the liquid return transmission pipe assembly 73 then centrally collects the coolant after absorbing heat in the heat dissipation plate 74 through a plurality of liquid return transmission hoses and transports it back to the coolant storage tank 71. This multi-pipeline design method can make the coolant flow more evenly in the heat dissipation plate 74, improving the heat dissipation efficiency. Further optimizing the cyclic path of the coolant ensures that the coolant can fully absorb the heat of the lower die 32, improving the heat dissipation effect, enabling the lower die 32 to be cooled to a suitable temperature faster, shortening the production cycle, improving the production efficiency, and at the same time ensuring the uniformity of the temperature of the lower die 32 and enhancing the product quality.

[0100] In a preferred embodiment, it further includes a material collection box 80 arranged on one side of the workbench 11. An inclined material transmission channel 114 is arranged on the workbench 11. The lower end of the material transmission channel 114 is communicated with the material collection box 80, and its upper end is communicated with two rectangular through grooves 321 in the lifted state.

[0101] In a preferred embodiment, it further includes a central controller 90 installed on the workbench 11; the signal output ends of the central controller 90 are respectively connected to the signal input ends of the lifting drive mechanism 20, the circulation pump 75, the jacking mechanism 50, and the horizontal feeding mechanism 40.

[0102] Based on the above structure, the automatic control of each mechanism of the mold is realized, the intelligent level of the mold and the automatic level of the production process are improved, the manual intervention is reduced, the labor intensity is lowered, and at the same time, the accuracy and stability of the production process are improved, the consistency of the product quality is ensured, and it is convenient for production management and quality control.

[0103] Embodiment Two:

[0104] Please refer to Figure 1-2 , based on Embodiment One, this embodiment provides a die-casting method for an automotive key accessory die-casting mold, including the following steps:

[0105] S10. Mold closing step: Start the hydraulic drive assembly, and the hydraulic drive assembly drives the lifting platform to descend, so that the rectangular mold core of the upper mold gradually embeds into the rectangular through groove of the lower mold until the upper mold and the lower mold are completely closed to form a molding cavity for the automotive key accessory.

[0106] S20. Die-casting step: Inject the molten metal material into the molding cavity through the liquid injection system. Under the action of pressure, the metal material fills the entire molding cavity to complete the die-casting molding of the automotive key accessory.

[0107] S30. Cooling step: After die-casting is completed, cool the lower mold through the heat dissipation mechanism.

[0108] S40. Mold opening step: After cooling is completed, the hydraulic drive assembly drives the lifting platform to rise to separate the upper mold from the lower mold to realize the mold opening operation.

[0109] S50. Jacking step: After mold opening, start the jacking mechanism, and the jacking mechanism jacks up the lower mold to a preset height so that the two rectangular through grooves of the lower mold are aligned with the two pushing parts one by one.

[0110] S60. Pushing step: Start the driving motor, and the driving motor drives the two lead screws to rotate synchronously through the transmission gear assembly. The two threaded sleeves are driven by the threads of the lead screws and move axially along the sliding grooves under the guiding action of the sliding blocks and the sliding grooves to push the formed automotive key accessory out of the rectangular through groove of the lower mold to complete the entire production process.

[0111] The entire die-casting method of the present invention is carried out in sequence according to the order of mold closing, die casting, cooling, mold opening, lifting, and pushing. During mold closing, the hydraulic drive assembly drives the lifting platform to descend according to the instruction of the central controller, so that the upper mold and the lower mold are closed to form a molding cavity; during the die-casting stage, the liquid injection system injects the molten metal material into the molding cavity and fills the entire cavity under pressure; during the cooling process, the heat dissipation mechanism works to reduce the temperature of the lower mold; during mold opening, the hydraulic drive assembly drives the lifting platform to rise, separating the upper mold from the lower mold; the lifting mechanism starts after mold opening and lifts the lower mold to a preset height; finally, the drive motor of the horizontal pushing mechanism rotates, driving the pushing part to push the formed fitting out of the lower mold, completing the entire production process, realizing the efficient and high-quality production of automotive key fittings, ensuring the coherence and stability of the production process, improving production efficiency, reducing production costs, and at the same time ensuring that the products meet the quality requirements.

[0112] Although only certain components and embodiments of the present application have been illustrated and described, many modifications and changes can be conceived by those skilled in the art without actually departing from the scope and spirit of the claims, such as: changes in the size, dimensions, structure, shape and proportion, installation arrangement, material use, color, orientation, etc. of each component.

[0113] The above-mentioned embodiments are only the preferred embodiments of the embodiments of the present invention and cannot be used to limit the scope of protection of the embodiments of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the embodiments of the present invention fall within the scope of protection required by the embodiments of the present invention.

Claims

1. A die-casting mold for automobile key accessories, comprising: A supporting structure, comprising a workbench with a receiving cavity, four vertical load-bearing columns installed at four corners of the workbench, and a mounting platform installed at the tops of the four vertical load-bearing columns; A lifting drive mechanism, comprising a hydraulic drive assembly fixed to a mounting platform and a lifting platform connected to the hydraulic drive assembly; It is characterized by further comprising: The mold assembly comprises an upper mold installed on the lifting platform and a lower mold installed in the accommodating cavity of the workbench; wherein the lower mold comprises two parallel rectangular through grooves with open top surfaces; the bottom surface of the upper mold extends downward to form two parallel rectangular mold cores, and a molding groove is arranged on the bottom surface of each rectangular mold core; The horizontal material pushing mechanism comprises a horizontal driving mechanism installed on the workbench and located on one side of the lower die, and two material pushing members respectively connected to the horizontal driving mechanism by transmission; A lifting mechanism is installed in the accommodating cavity and located below the lower mold, and is used to lift the lower mold to a preset height after demoulding; Wherein, the preset height of the lifting mechanism is configured to align the two rectangular through slots of the lower die with the two pusher pieces one by one.

2. The die-casting mold for automobile key accessories according to claim 1, characterized in that: The horizontal driving mechanism comprises: A drive motor is installed on the workbench as a power source; A transmission gear assembly connected to an output shaft of a driving motor; Two screw rods are arranged in parallel, one end of which is connected to the transmission gear assembly, and the other end of which extends to the outside of the rectangular through slot of the lower die; The pusher is a threaded sleeve, and two threaded sleeves are respectively threadedly connected to two screw rods. The lower end of the threaded sleeve forms a sliding block, and a sliding groove is correspondingly arranged on the workbench to achieve sliding fit.

3. The die-casting mold for automobile key accessories according to claim 1, characterized in that: The lifting mechanism includes a cylinder and a support plate connected to the piston rod of the cylinder; the cylinder is installed in the accommodating cavity, the piston rod is arranged in a vertical direction, and the support plate is installed on the top of the piston rod and is located below the lower mold.

4. The die-casting mold for automobile key accessories according to claim 3, characterized in that: A limiting groove is formed on the bottom surface of the lower mold, and limiting parts matching the limiting groove are respectively formed at both ends of the support plate.

5. The die-casting mold for automobile key accessories according to claim 1, characterized in that: It also includes a buffer component, which includes a plurality of limit columns and a plurality of springs respectively installed in the accommodating cavity, and the plurality of springs are correspondingly sleeved on the outside of the plurality of limit columns, the top of the spring is connected to the bottom surface of the lower mold, and the bottom is connected to the bottom wall of the accommodating cavity; when the hydraulic drive component drives the upper mold to descend, it drives the rectangular mold core to contact the inner bottom wall of the rectangular through groove and compresses the plurality of springs until the rectangular through groove contacts the limit columns to complete the mold closing.

6. The die-casting mold for automobile key accessories according to claim 1, characterized in that: In the mold closing state, the entire lower mold is accommodated in the accommodating cavity, and the shape and size of the lower mold are matched with the shape and size of the accommodating cavity.

7. The die-casting mold for automobile key accessories according to claim 5, characterized in that: The workbench is provided with placement grooves on both sides of the accommodating cavity, and the two placement grooves are respectively connected to the accommodating cavity; and further comprises a heat dissipation mechanism, and the heat dissipation mechanism comprises two groups of symmetrically arranged heat dissipation components; The heat dissipation assembly includes a coolant storage tank, a circulation pump, a liquid inlet transmission pipe assembly, a liquid return transmission pipe assembly and a heat dissipation plate; The coolant storage tank is installed in the placement tank; The circulating pump is installed in the coolant storage tank; The heat sink is made of copper alloy material, and a microchannel structure is provided inside the heat sink. The heat sink is installed between the spring and the lower die. The liquid inlet end of the liquid inlet transmission pipe assembly is connected to the liquid outlet end of the circulation pump, and the liquid outlet end is connected to the inlet end of the heat sink, and the liquid outlet end of the heat sink is connected to the coolant storage tank through the liquid return transmission pipe assembly.

8. The die-casting mold for automobile key accessories according to claim 7, characterized in that: The liquid inlet transmission pipe assembly includes a liquid inlet main pipe connected to the liquid outlet end of the circulation pump and a plurality of liquid inlet delivery hoses respectively connected to the liquid inlet main pipe, and the liquid outlet end of each liquid inlet delivery hose is respectively connected to the liquid inlet end of the heat sink; The liquid return transmission pipe assembly includes a plurality of liquid return delivery hoses, the liquid inlet ends of the plurality of liquid return delivery hoses are respectively connected to the liquid outlet ends of the heat sink, and their liquid outlet ends are respectively connected to the liquid return ends of the coolant storage tank.

9. The die-casting mold for automobile key accessories according to claim 7, characterized in that: It also includes a central controller installed on the workbench; the signal output end of the central controller is respectively connected to the signal input ends of the lifting drive mechanism, the circulating pump, the jacking mechanism and the horizontal pushing mechanism.

10. A die-casting method using the die-casting mold for automobile key accessories according to any one of claims 1 to 9, characterized in that: The following steps are involved: S10, mold closing step: starting the hydraulic drive assembly, the hydraulic drive assembly drives the lifting platform to descend, so that the rectangular mold core of the upper mold is gradually embedded in the rectangular through groove of the lower mold, until the upper mold and the lower mold are completely closed, forming a molding cavity for the car key accessory; S20, die-casting step: injecting molten metal material into the molding cavity through the injection system, and under the action of pressure, the metal material fills the entire molding cavity to complete the die-casting molding of the automobile key accessory; S30, cooling step: after die casting is completed, the lower die is cooled by a heat dissipation mechanism; S40, mold opening step: after cooling is completed, the hydraulic drive assembly drives the lifting platform to rise, so that the upper mold is separated from the lower mold, and the mold opening operation is realized; S50, lifting step: after the mold is opened, the lifting mechanism is started, and the lifting mechanism lifts the lower mold to a preset height, so that the two rectangular through grooves of the lower mold are aligned with the two pushers one by one; S60, pushing step: start the driving motor, the driving motor drives the two screws to rotate synchronously through the transmission gear assembly, the two threaded sleeves are driven by the screw threads and guided by the sliding block and the sliding groove, and move axially along the sliding groove to push the formed car key accessories out of the rectangular through groove of the lower mold, completing the entire production process.

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