Efficient demolding medal die-casting die

Abstract

The utility model discloses an efficient demolding medal die-casting die which comprises a base, a support is fixed to the top of the base through screws, an upper pressing die and a downward pressing air cylinder driving the upper pressing die to press downwards are installed in the support, and a platform and a driving structure driving the platform to rotate are installed in the base. Stand columns are fixed to the upper portions of the platforms through screws. According to the utility model, the rotating motor drives the lower pressing mold to turn over, the vibration effect generated by spring resilience is combined, the adhesive force between the medal and the mold is destroyed, the separation of the medal is accelerated, the demolding device is particularly suitable for demolding the medal with complex textures, the risk of mold clamping is obviously reduced, and the demolding efficiency is improved; the problem of ejection failure caused by spring fatigue is eliminated, and the action is reliable; and the demolding state is detected in real time in cooperation with the material sensor, if vibration demolding fails, the electric push rod is triggered to eject the medal, and the manual intervention requirement is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of medal die-casting equipment, specifically to a high-efficiency demolding medal die-casting mold. Background Technology

[0002] Medals and badges are mostly manufactured using die casting, a process that involves injecting molten metal into a mold under high pressure to perfectly replicate the mold's fine texture. This method is particularly suitable for complex designs such as reliefs, text, and patterns on medals. Die casting strikes a balance between precision, production efficiency, cost control, and aesthetic requirements in medal manufacturing, making it especially suitable for scenarios requiring rapid mass production and complex designs.

[0003] A search revealed a die-casting device for medal processing in patent application CN118950973A, particularly relating to the field of die-casting. The device includes a support base and a support frame. The support frame is located on top of the support base and connected to symmetrically distributed electric push rods. The electric push rods are electrically connected to an external control system via a control module. A die-casting block is connected to the telescopic end of each electric push rod. The device also includes a casting box located on top of the support frame. Two casting devices are connected to the support frame, and a connecting pipe connects the top of each casting device to the casting box. After the die-casting block moves downwards to form the medal, the die-casting mold drives a moving frame, a moving rack, and a rotating gear to rotate circumferentially along a shaped track. When the moving frame moves to a structure where the shaped track is recessed downwards, it moves downwards, causing the moving rack to move downwards, which in turn causes the rotating gear to rotate a rotating disk. This inverts the die-casting mold, and under the action of the ejection mechanism, the medal is automatically ejected downwards.

[0004] The ejector rod of this device returns to its original position via a reset spring. Long-term high-frequency use may cause the spring to fatigue and fail, affecting the stability of the ejection action and even causing the medal to jam. Furthermore, when the die-casting mold is inverted, the medal falls only by gravity. If there is a slight misalignment between the ejector rod and the extrusion column, residual debris may cause the medal to tilt and jam, requiring manual intervention and affecting the demolding efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a high-efficiency demolding medal die-casting mold. By setting a crank, spring and rotating motor, the rotating motor drives the lower mold to rotate, and the vibration generated by the spring rebound makes the medal quickly detach from the lower mold, improving the demolding efficiency. At the same time, an ejection structure is set to stably eject the medal that has not been demolded, avoiding demolding failure due to vibration.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency demolding medal die-casting mold, comprising a base, a bracket fixed to the top of the base by screws, an upper mold and a lower cylinder for driving the upper mold to press down are installed in the bracket, a platform and a drive structure for driving the platform to rotate are installed in the base, columns are fixed to the top of the platform by screws, a lower mold and a vibration structure for driving the medal in the lower mold to demold quickly and an ejection structure for preventing the medal in the lower mold from failing to demold;

[0007] The vibration structure includes a spring and a slider. Cranks are fixed on both sides of the lower die. A rotating rod is fixed on one side of the crank. The rotating rod is rotatably connected inside the slider. The spring is fixed on one side of the slider. The column is provided with a sliding structure for the slider to slide longitudinally and a rotating structure for driving the lower die to flip.

[0008] Preferably, the rotating structure includes a rotating motor, which is fixed to one side of the slider by screws, and the output end of the rotating motor is fixedly connected to the rotating rod.

[0009] Preferably, the sliding structure includes a slide groove, which is formed on one side of the column. The spring is fixed in the slide groove, and the slider is slidably connected in the slide groove. A clearance groove is formed on the other side of the column to allow the rotating motor to move up and down.

[0010] Preferably, the ejection structure includes an electric push rod, one end of the lower die is fixed to a mounting bracket by screws, the electric push rod is fixed to one side of the mounting bracket by screws, and a top block is fixed to the telescopic end of the electric push rod, the top block being slidably connected inside the lower die.

[0011] Preferably, the mounting bracket includes a fixing rod and a mounting plate, one end of the fixing rod is fixedly connected to the lower pressing mold, the mounting plate is fixed to the other end of the fixing rod, and the electric push rod is fixedly connected to the mounting plate.

[0012] Preferably, the ejection structure further includes a material sensor, and an annular groove is formed on the upper surface of the platform, with the material sensor installed in the annular groove.

[0013] Preferably, the drive structure includes a rotary motor, which is fixed to the middle of the base by screws, and the output end of the rotary motor is fixedly connected to the middle of the platform.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a rotating motor to drive the lower mold to flip, combined with the vibration effect generated by the spring rebound, to break the adhesion between the medal and the mold, accelerate the demolding of the medal, and is especially suitable for demolding medals with complex textures, significantly reducing the risk of mold jamming and improving demolding efficiency.

[0016] 2. The ejection structure uses an electric push rod instead of a traditional spring, eliminating the ejection failure problem caused by spring fatigue, and ensuring reliable operation; in conjunction with a material sensor to detect the demolding status in real time, if vibration demolding fails, the electric push rod is triggered to eject the medal, reducing the need for manual intervention. Attached Figure Description

[0017] Figure 1 This is an isometric drawing of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure within the platform of this utility model;

[0019] Figure 3 This is a schematic diagram of the ejection structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the crank mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram showing the position of the rotating motor of this utility model;

[0022] Figure 6 This is a schematic diagram of the position of the vibration structure of this utility model.

[0023] In the diagram: 1. Base; 2. Support; 3. Upper mold; 4. Lower cylinder; 5. Platform; 6. Rotary motor; 7. Column; 8. Lower mold; 9. Vibration structure; 10. Ejection structure; 901. Spring; 902. Slider; 903. Crank; 904. Rotating rod; 11. Sliding structure; 12. Rotary motor; 1101. Slide groove; 1102. Clearance groove; 1001. Electric push rod; 1002. Mounting bracket; 1003. Top block; 1002a. Fixing rod; 1002b. Mounting plate; 1004. Material sensor; 1005. Annular groove. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6This utility model provides a technical solution: a high-efficiency demolding medal die-casting mold, including a base 1, a bracket 2 fixed to the top of the base 1 by screws, an upper pressure mold 3 and a lower pressure cylinder 4 for driving the upper pressure mold 3 to press down are installed in the bracket 2, a platform 5 and a drive structure for driving the platform 5 to rotate are installed in the base 1, and columns 7 are fixed to the top of the platform 5 by screws. A lower pressure mold 8 and a vibration structure 9 for driving the medal in the lower pressure mold 8 to demold quickly and an ejection structure 10 for preventing the medal in the lower pressure mold 8 from failing to demold.

[0026] The vibration structure 9 includes a spring 901 and a slider 902. Cranks 903 are fixed on both sides of the lower die 8. A rotating rod 904 is fixed on one side of the crank 903. The rotating rod 904 is rotatably connected inside the slider 902. The spring 901 is fixed on one side of the slider 902. The column 7 is provided with a sliding structure 11 for the slider 902 to slide longitudinally within the column 7 and a rotating structure for driving the lower die 8 to flip.

[0027] The adhesion between the medal and the mold is broken by flipping and vibration, improving demolding efficiency. The rotating motor 12 starts, and its output shaft drives the rotating rod 904 to rotate. The rotating rod 904 is rigidly connected to the crank 903, driving the lower mold 8 to rotate 90° around the axis. At this time, because the crank 903 changes from horizontal to vertical, it forces the slider 902 to move upward within the groove 1101, compressing the spring 901 to store energy. When the rotating motor 12 continues to rotate, because the crank 903 changes from vertical to horizontal, the spring 901 releases energy, pushing the slider 902 to rebound, causing the lower mold 8 to move rapidly downward. The lower mold 8 contacts the platform 5, and the vibration causes the medal to detach from the mold cavity of the lower mold 8.

[0028] The rotating structure includes a rotating motor 12, which is fixed to one side of the slider 902 by screws, and the output end of the rotating motor 12 is fixedly connected to the rotating rod 904.

[0029] The sliding structure 11 includes a slide groove 1101, which is opened on one side of the column 7. The spring 901 is fixed in the slide groove 1101, and the slider 902 is slidably connected in the slide groove 1101. A clearance groove 1102 for the rotating motor 12 to move up and down is opened on the other side of the column 7.

[0030] like Figure 3 As shown, the sliding groove 1101 and the slider 902 are fitted together. The inner wall of the sliding groove 1101 is provided with a protrusion for fitting with the grooves on both sides of the slider 902 to limit the vertical movement of the slider 902.

[0031] The ejection structure 10 includes an electric push rod 1001. One end of the lower mold 8 is fixed to a mounting bracket 1002 by screws. The electric push rod 1001 is fixed to one side of the mounting bracket 1002 by screws. A top block 1003 is fixed to the telescopic end of the electric push rod 1001. The top block 1003 is slidably connected inside the lower mold 8.

[0032] When the electric push rod 1001 is activated, the top block 1003 slides within the lower die 8, pushing the medal out.

[0033] The mounting bracket 1002 includes a fixing rod 1002a and a mounting plate 1002b. One end of the fixing rod 1002a is fixedly connected to the lower pressing mold 8, and the mounting plate 1002b is fixed to the other end of the fixing rod 1002a. The electric push rod 1001 is fixedly connected to the mounting plate 1002b.

[0034] The ejection structure 10 also includes a material sensor 1004. An annular groove 1005 is formed on the upper surface of the platform 5, and the material sensor 1004 is installed in the annular groove 1005.

[0035] A material sensor 1004 is installed in the annular groove 1005 of platform 5. The material sensor 1004 is an infrared sensor that monitors the area of ​​the lower mold 8 in real time. If the medal is not covered by the material sensor 1004 after vibration demolding, the material sensor 1004 sends a signal to the control system. The material sensor 1004 is of model E3Z-T61.

[0036] After receiving the signal, the electric push rod 1001 starts, and the telescopic end pushes the top block 1003 to move linearly along the inner cavity of the lower die 8. The mechanical ejection force acts directly on the back of the medal, forcibly pushing it out of the mold cavity.

[0037] The drive structure includes a rotary motor 6, which is fixed to the middle of the base 1 by screws, and the output end of the rotary motor 6 is fixedly connected to the middle of the platform 5.

[0038] In use, the lower pressure cylinder 4 drives the upper pressure mold 3 to press down, and the upper pressure mold 3 and the lower pressure mold 8 close together to complete the medal forming. This forming structure is the same as the existing technology and is not the main improvement point of this application, so it will not be described in detail.

[0039] After the medal is formed, the upper die 3 is reset and lifted by the lower die cylinder 4, the rotating motor 12 is started, and the output shaft drives the rotating rod 904 to rotate; the rotating rod 904 is rigidly connected to the crank 903, driving the lower die 8 to rotate around the rotating shaft by a certain angle of 90°. During the rotation, as... Figure 3As shown, the arc-shaped surfaces at both ends of the crank 903 contact the platform 5. As the rotating motor 12 continues to rotate, the crank 903 changes from a horizontal to a vertical position, forcing the slider 902 to move upwards within the groove 1101, compressing the spring 901 and storing energy. When the rotating motor 12 continues to rotate, the crank 903 changes from a vertical to a horizontal position, and the spring 901 releases energy, pushing the slider 902 back, causing the lower die 8 to move rapidly downwards. The lower die 8 contacts the platform 5, and vibration causes the medal to detach from the cavity of the lower die 8.

[0040] If the material sensor 1004 detects that there is no obstacle covering the medal, it determines that the medal demolding has failed. The material sensor 1004 sends a signal to the control system. After receiving the signal from the control system, the electric push rod 1001 starts and pushes the top block 1003 to move linearly along the inner cavity of the lower die 8. The mechanical ejection force acts directly on the back of the medal, forcibly pushing it out of the mold cavity.

[0041] The rotating motor 6 rotates, driving the platform 5 to rotate, which facilitates the rotation of the two forming stations and makes it convenient for the external material handling device to unload the medals into the annular groove 1005.

[0042] The device causes the lower die 8 to flip and impact the platform 5, which then vibrates, allowing the medal to quickly detach from the lower die 8, thus improving the demolding efficiency. At the same time, the ejection structure 10 is set up to stably eject the medal that has not been demolded, avoiding demolding failure due to vibration.

[0043] 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 high-efficiency demolding medal die-casting mold, characterized in that: Includes a base (1), the top of which is fixed with a bracket (2) by screws, an upper pressing mold (3) and a lower pressing cylinder (4) for driving the upper pressing mold (3) to press down are installed in the bracket (2), a platform (5) and a driving structure for driving the platform (5) to rotate are installed in the base (1), and columns (7) are fixed above the platform (5) by screws. A lower pressing mold (8) and a vibration structure (9) for driving the medals in the lower pressing mold (8) to quickly demold are arranged between the two columns (7), and an ejection structure (10) for preventing the medals in the lower pressing mold (8) from failing to demold. The vibration structure (9) includes a spring (901) and a slider (902). Cranks (903) are fixed on both sides of the lower die (8). A rotating rod (904) is fixed on one side of the crank (903). The rotating rod (904) is rotatably connected inside the slider (902). The spring (901) is fixed on one side of the slider (902). The column (7) is provided with a sliding structure (11) for the slider (902) to slide longitudinally within the column (7) and a rotating structure for driving the lower die (8) to flip.

2. The high-efficiency demolding medal die-casting mold according to claim 1, characterized in that: The rotating structure includes a rotating motor (12), which is fixed to one side of the slider (902) by screws, and the output end of the rotating motor (12) is fixedly connected to the rotating rod (904).

3. The high-efficiency demolding medal die-casting mold according to claim 2, characterized in that: The sliding structure (11) includes a slide groove (1101), which is opened on one side of the column (7). The spring (901) is fixed in the slide groove (1101), and the slider (902) is slidably connected in the slide groove (1101). A clearance groove (1102) is opened on the other side of the column (7) for the rotating motor (12) to move up and down.

4. The high-efficiency demolding medal die-casting mold according to claim 3, characterized in that: The ejection structure (10) includes an electric push rod (1001). One end of the lower die (8) is fixed with a mounting bracket (1002) by screws. The electric push rod (1001) is fixed to one side of the mounting bracket (1002) by screws. A top block (1003) is fixed to the telescopic end of the electric push rod (1001). The top block (1003) is slidably connected inside the lower die (8).

5. The high-efficiency demolding medal die-casting mold according to claim 4, characterized in that: The mounting bracket (1002) includes a fixing rod (1002a) and a mounting plate (1002b). One end of the fixing rod (1002a) is fixedly connected to the lower pressing mold (8), and the mounting plate (1002b) is fixed to the other end of the fixing rod (1002a). The electric push rod (1001) is fixedly connected to the mounting plate (1002b).

6. The high-efficiency demolding medal die-casting mold according to claim 5, characterized in that: The ejection structure (10) also includes a material sensor (1004). An annular groove (1005) is provided on the upper surface of the platform (5), and the material sensor (1004) is installed in the annular groove (1005).

7. The high-efficiency demolding medal die-casting mold according to claim 1, characterized in that: The drive structure includes a rotary motor (6), which is fixed to the middle of the base (1) by screws, and the output end of the rotary motor (6) is fixedly connected to the middle of the platform (5).

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