A scope housing die casting mold and method thereof

Abstract

The application discloses a scope shell die-casting die and a method thereof, and belongs to the technical field of metal die-casting dies, and comprises a base, a lower die and an upper die arranged in the base, a core shaft arranged in the base, a motor and a cylinder arranged on the side wall of the base, the output end of the motor is fixedly connected with one end of the core shaft, the other end of the core shaft is connected with the telescopic end of the cylinder, and a vibration mechanism is arranged in the core shaft. When die-casting, the centrifugal force generated by the rotation of the core shaft drives the radial pressure gradient of the metal liquid, the bubbles are gathered to the center of the core shaft and discharged through a vacuum system, the porosity is reduced, the shear force generated by the rotation of the core shaft and the metal liquid can reduce the interdendritic shrinkage porosity defect, and then the internal porosity caused by insufficient feeding in the inner wall area is reduced, the remote underfilling problem caused by the long process in the traditional die-casting is solved, the product forming is more complete and uniform, and the overall die-casting quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal die casting molds, in particular to a scope finder shell die casting mold and method thereof. BACKGROUND

[0002] In the manufacturing process of the scope finder, for the shell parts with regular shape, the die casting method is currently mainly used for forming, compared with the traditional bar cutting process, the die casting method not only has fast forming speed, but also can reduce the loss of processing materials and processing cost while ensuring the dimensional accuracy.

[0003] In the prior art, in the die casting process of the scope finder shell, the metal liquid flow path in the cylindrical cavity of the mold is long, gas is prone to be retained to form pores, and the difference in solidification rate of the thin-walled area is also prone to cause frequent shrinkage porosity defects between dendrites, thereby affecting the quality of the overall part die casting forming.

[0004] How to invent a scope finder shell die casting mold and method thereof to improve these problems has become a problem to be solved by the person skilled in the art. SUMMARY

[0005] In order to make up for the above shortcomings, the present application provides a scope finder shell die casting mold and method thereof, which aims to improve the problems in the above background art.

[0006] The present application is implemented as follows:

[0007] The present application provides a scope finder shell die casting mold, which comprises a base, a lower mold and an upper mold arranged in the interior of the base, a core shaft arranged in the interior of the base, a motor and an air cylinder arranged on the side wall of the base, the output end of the motor being fixedly connected with one end of the core shaft, the other end of the core shaft being connected with the telescopic end of the air cylinder, and a vibration mechanism arranged in the interior of the core shaft.

[0008] The vibration mechanism comprises a fixed shaft rotatably connected with the end of the core shaft, a gear ring formed in the side wall of the core shaft, the fixed shaft being provided with a gear one engaged with the gear ring, a rotating shaft rotatably connected with the interior of the core shaft, the end of the rotating shaft being provided with a gear two engaged with the gear one, the side wall of the rotating shaft being fixedly provided with a cam, a sliding block sleeved with the inner side wall of the core shaft, the sliding block being connected with a driving shaft, the side wall of the cam being provided with a guide groove matched with the driving shaft, a return spring connected between the sliding block and the core shaft, a vibration shaft arranged on the inner side wall of the core shaft, a striking shaft matched with the vibration shaft arranged on the side of the sliding block close to the core shaft, and a processing mechanism arranged in the interior of the core shaft.

[0009] Preferably, the guide groove is designed in an arc shape, and the distances from the two ends of the guide groove to the axis of the rotating shaft are different.

[0010] Preferably, the sliding blocks are evenly distributed along the axis of the rotating shaft, and each group of the sliding blocks connected to the driving shaft has at least two sliding blocks and is evenly distributed along the driving shaft.

[0011] Preferably, the telescopic end of the air cylinder is provided with an electromagnet, and the electromagnet is provided with a clamping shaft movably sleeved with the fixed shaft.

[0012] Preferably, the machining mechanism comprises a gear three arranged on the outer side wall of the rotating shaft, a gear four rotatably connected to the inside of the mandrel, a rotating wheel one, a rotating wheel two, a rotating wheel three and a rotating wheel four rotatably connected to the inside of the mandrel, the two ends of the gear four are in transmission connection with the rotating wheel one and the rotating wheel three through shafts, the outer side wall of the rotating wheel one and the rotating wheel two is in transmission connection with a transmission belt, the outer side wall of the rotating wheel three and the rotating wheel four is in transmission connection with a polishing belt, the outer side wall of the transmission belt is provided with a cutter, and a communication assembly is arranged between the rotating wheel two and the rotating wheel four.

[0013] Preferably, the rotating wheel one is provided in multiple groups, the rotating wheel two is arranged between the multiple groups of the rotating wheel one, and the arc profile surrounded by the rotating wheel one and the rotating wheel two is close to the profile of the outer side wall of the mandrel.

[0014] Preferably, the communication assembly comprises a floating block one movably sleeved with the outer side wall of the rotating wheel two, a floating block two sleeved with the outer side wall of the rotating wheel four, a communication shaft connected between the rotating wheel four and the rotating wheel two, a communication port communicated with the communication shaft formed in the inside of the rotating wheel four and the rotating wheel two, springs arranged on the bottom of the floating block one and the floating block two for resetting, and a liquid inlet pipe and a liquid return pipe for communicating the rotating wheel two and the rotating wheel four formed in the inside of the communication shaft.

[0015] Preferably, a one-way valve with a flow direction towards the rotating wheel four is formed in the inside of the liquid inlet pipe, a one-way valve with a flow direction towards the inside of the rotating wheel two is formed in the inside of the liquid return pipe, and the flow cross-sectional area of the liquid inlet pipe is greater than that of the liquid return pipe.

[0016] A die casting method of a die casting mold for a scope shell, the die casting method comprising the following steps:

[0017] S1: start the air cylinder and the electromagnet, and pull the mandrel into the die casting cavity formed between the lower mold and the upper mold;

[0018] S2: after sealing, press the metal melt into the die casting cavity formed by the lower mold, the upper mold and the mandrel through the die casting port;

[0019] S3: start the motor, and after rotating the mandrel for a period of time during die casting, turn off the motor;

[0020] S4: after cooling, start the motor and the air cylinder, and drive the mandrel to rotate and exit to complete demolding.

[0021] In summary, the beneficial effects of the present application are:

[0022] 1、In the process of die casting, the centrifugal force generated by the rotation of the mandrel drives the metal liquid to produce a radial pressure gradient, which promotes the bubbles to gather towards the center of the mandrel and be discharged through the vacuum system, reducing the porosity. At the same time, the shear force generated by the rotation of the mandrel and the metal liquid can reduce the interdendritic shrinkage defects, and further reduce the internal porosity caused by insufficient feeding in the inner wall area. In addition, the vibration generated by the periodic pulling out and resetting of the drive shaft by the cam driven by the rotation of the shaft can break the aggregation state of the gas in the metal liquid, making the small bubbles merge into large bubbles and float out, thereby reducing the porosity defects in the product and improving the density of the product. At the same time, the vibration can make the metal liquid fill the corners of the cavity better, and the turbulent effect generated by the rotation of the mandrel can enhance the fluidity of the metal liquid, solving the problem of insufficient casting at the far end caused by long process in traditional die casting, making the product more complete and uniform, and improving the overall die casting quality.

[0023] 2、In the demolding process, the rotation of the mandrel drives the transmission belt and the polishing belt to rotate, and in the process of withdrawing, the area is automatically cut and polished, reducing the subsequent finishing work. At the same time, the protrusions inside the product are also automatically detected during the cutting and finishing process. When the protrusions are too large, the polishing diameter and area can be enlarged after cutting, and the polishing intensity of the cutting and finishing area can be automatically improved to ensure the overall and improve the overall quality of the product. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0025] Figure 1 is a base split schematic diagram provided by the embodiment of the present application.

[0026] Figure 2 is a schematic diagram of the mandrel provided by the embodiment of the present application.

[0027] Figure 3 is a schematic diagram of the mandrel provided by the embodiment of the present application.

[0028] Figure 4 is a schematic diagram of the connection between the mandrel and the fixed shaft provided by the embodiment of the present application.

[0029] Figure 5 is a schematic diagram of the internal part of the cam provided by the embodiment of the present application.

[0030] Figure 6 is a schematic diagram of the cam provided by the embodiment of the present application.

[0031] Figure 7 is the overall schematic diagram of the machining mechanism provided by the embodiment of the application.

[0032] Figure 8 is the split schematic diagram of the machining mechanism provided by the embodiment of the application.

[0033] Figure 9 is the overall schematic diagram of the communication shaft provided by the embodiment of the application.

[0034] Figure 10 is the internal schematic diagram of the communication shaft provided by the embodiment of the application.

[0035] Legend:

[0036] 100, base; 103, lower mold; 104, upper mold; 105, motor; 106, air cylinder; 107, electromagnet; 108, clamping shaft; 200, mandrel; 201, fixed shaft; 202, gear one; 203, gear ring; 204, gear two; 205, rotating shaft; 206, gear three; 207, gear four; 300, cam; 301, guide groove; 302, sliding block; 303, drive shaft; 304, impact shaft; 305, vibration shaft; 306, return spring; 400, rotating wheel one; 401, transmission belt; 402, cutter; 403, rotating wheel two; 404, floating block one; 405, communication shaft; 406, rotating wheel three; 407, polishing belt; 408, rotating wheel four; 409, floating block two; 410, communication port; 411, liquid inlet pipe; 412, liquid return pipe. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0038] With reference to Figures 1-10 , the application provides a scope press die of a scope housing, which comprises a base 100, the inside of the base 100 is provided with a lower mold 103 and an upper mold 104, the inside of the base 100 is further provided with a mandrel 200, the side wall of the base 100 is provided with a motor 105 and an air cylinder 106, the output end of the motor 105 is fixedly connected with one end of the mandrel 200, the side wall of the base 100 is further provided with a group of limiting sliding grooves for sliding of the motor 105, the other end of the mandrel 200 is connected with the telescopic end of the air cylinder 106, the inside of the mandrel 200 is provided with a vibration mechanism;

[0039] The vibration mechanism comprises a fixed shaft 201 rotatably connected to the end of the mandrel 200, the side wall of the mandrel 200 is provided with a gear ring 203, the fixed shaft 201 is provided with a gear wheel I 202 engaged with the gear ring 203, the inside of the mandrel 200 is rotatably connected with a rotating shaft 205, the end of the rotating shaft 205 is provided with a gear wheel II 204 engaged with the gear wheel I 202, the side wall of the rotating shaft 205 is fixed with a cam 300, the inside of the mandrel 200 is sleeved with a sliding block 302, the sliding block 302 is connected with a driving shaft 303, the side wall of the cam 300 is provided with a guide groove 301 matched with the driving shaft 303, the sliding block 302 and the mandrel 200 are connected with a reset spring 306, the inside of the mandrel 200 is provided with a vibration shaft 305, the side of the sliding block 302 close to the mandrel 200 is provided with an impact shaft 304 matched with the vibration shaft 305, and the inside of the mandrel 200 is further provided with a processing mechanism.

[0040] It should be noted that the guide groove 301 is arc-shaped, and the distance between the two ends of the guide groove 301 and the axis of the rotating shaft 205 is different.

[0041] Further, the sliding block 302 is uniformly distributed along the axis of the rotating shaft 205, and each group of the sliding block 302 connected with the driving shaft 303 is at least two groups and is uniformly distributed along the driving shaft 303.

[0042] Further, the telescopic end of the air cylinder 106 is provided with an electromagnet 107, one end of the electromagnet 107 close to the fixed shaft 201 is provided with a clamping shaft 108 movably sleeved with the fixed shaft 201, the fixed shaft 201 is made of magnetic metal material, when the electromagnet 107 is electrified and the electromagnet 107 and the clamping shaft 108 are magnetized, the fixed shaft 201 and the clamping shaft 108 can be movably sleeved while the mandrel 200 is driven and pulled as a whole through magnetism, and after power-off and losing magnetism, the clamping shaft 108 can be separated from the mandrel 200, facilitating the product demolding.

[0043] Referring to Figures 7-10 The processing mechanism comprises a gear wheel III 206 arranged on the outer side wall of the rotating shaft 205, a gear wheel IV 207 rotatably connected in the inside of the mandrel 200, a rotating wheel I 400, a rotating wheel II 403, a rotating wheel III 406 and a rotating wheel IV 408 rotatably connected in the inside of the mandrel 200, the two ends of the gear wheel IV 207 are drivingly connected with the rotating wheel I 400 and the rotating wheel III 406 through shafts, the outer side walls of the rotating wheel I 400 and the rotating wheel II 403 are drivingly connected with a transmission belt 401, the outer side walls of the rotating wheel III 406 and the rotating wheel IV 408 are drivingly connected with a polishing belt 407, the outer side wall of the transmission belt 401 is provided with a cutter 402, and the rotating wheel II 403 and the rotating wheel IV 408 are provided with a communication assembly.

[0044] Further, the plurality of rotating wheels one 400 are arranged, and the rotating wheel two 403 is arranged between the plurality of rotating wheels one 400, and the arc profile surrounded by the rotating wheel one 400 and the rotating wheel two 403 is close to the outer side wall profile of the mandrel 200. Correspondingly, the plurality of rotating wheels three 406 are arranged, and the rotating wheel four 408 is arranged between the plurality of rotating wheels three 406, and the arc profile surrounded by the rotating wheel three 406 and the rotating wheel four 408 is close to the outer side wall profile of the mandrel 200.

[0045] With reference to Figures 8-10 The communication assembly comprises a floating block one 404 movably sleeved on the outer side wall of the rotating wheel two 403, the floating block two 409 is sleeved on the outer side wall of the rotating wheel four 408, the communication shaft 405 is connected between the rotating wheel four 408 and the rotating wheel two 403, the inner part of the rotating wheel four 408 and the rotating wheel two 403 is provided with the communication port 410 in communication with the communication shaft 405, the bottom of the floating block one 404 and the floating block two 409 is provided with the spring for resetting, and the inner part of the communication shaft 405 is provided with the liquid inlet pipe 411 and the liquid return pipe 412 for connecting the rotating wheel two 403 and the rotating wheel four 408.

[0046] It should be noted that the inner part of the liquid inlet pipe 411 is provided with the one-way valve with the flow direction towards the rotating wheel four 408, the inner part of the liquid return pipe 412 is provided with the one-way valve with the flow direction towards the inner part of the rotating wheel two 403, and the flow cross-sectional area of the liquid inlet pipe 411 is greater than that of the liquid return pipe 412.

[0047] A die casting method of a scope shell die casting mold, the die casting method comprising the following steps:

[0048] S1: Start the air cylinder 106 and the electromagnet 107, and pull the mandrel 200 into the die casting cavity formed between the lower mold 103 and the upper mold 104;

[0049] S2: After sealing, the metal melt is pressed into the die casting cavity formed by the lower mold 103, the upper mold 104 and the mandrel 200 through the die casting port;

[0050] S3: Start the motor 105, and turn off the motor 105 after driving the mandrel 200 to rotate for a period of time during die casting;

[0051] S4: After cooling, start the motor 105 and the air cylinder 106, and drive the mandrel 200 to rotate and exit to complete demolding.

[0052] The working process of the scope shell die casting mold and the method thereof is as follows:

[0053] When die casting, first control electromagnet 107 power on, card shaft 108 is the magnet end of electromagnet 107, first through the cooperation of end part and fixed shaft 201 limit movable sleeve joint, then through power on and magnetism and fixed shaft 201 keep attraction, then through the start of air cylinder 106, pull the mandrel 200 and motor 105 to the base 100 direction, until the mandrel 200 enters the lower die 103 and upper die 104 inside, through the cavity inside lower die 103 and upper die 104 and the outside of mandrel 200 form a group of cylindrical die casting cavity, after sealing work, through the liquid inlet to the lower die 103 and upper die 104 inside injection of metal solution, at this time, start motor 105, drive mandrel 200 rotation.

[0054] When the mandrel 200 rotates, the process of metal liquid from one end of the mandrel 200 to the other end of the mandrel 200, compared to ordinary straight line filling, through the rotation of the mandrel 200 generates directional fluid power, cooperate with the centrifugal force generated by rotation, drive metal liquid to form radial pressure gradient, make the bubble gather to the center of the mandrel 200 and discharge through the vacuum system, reduce the porosity, and the shear force generated by the rotation of the mandrel 200 and the metal liquid can continuously disturb the solidification front, reduce the interdendritic shrinkage defect, reduce the internal porosity of the inner wall area due to the lack of feeding, at the same time, the turbulent effect generated by rotation can enhance the flowability of metal liquid, solve the problem of remote underfilling caused by long process in traditional die casting, improve the overall die casting quality.

[0055] Further, when the mandrel 200 rotates, the planetary gear structure formed by the meshing transmission of the gear ring 203, the gear one 202 and the gear two 204 drives the gear two 204 to accelerate rotation, and further drives the rotating shaft 205 to accelerate rotation. Since there is a speed difference between the rotating shaft 205 and the mandrel 200, when the cam 300 rotates to the opening of the guide groove 301 far away from the rotating shaft 205 and the end of the driving shaft 303 is in contact, the driving shaft 303 is driven to slide in the guide groove 301 by the cooperation of the guide groove 301 and the driving shaft 303. With the rotation of the cam 300, the driving shaft 303 is driven to slide in the guide groove 301 from the entrance to the exit. When the guide groove 301 drives the driving shaft 303 to move to the position closest to the rotating shaft 205, the driving shaft 303 slides out of the exit of the guide groove 301 under the elastic resetting action of the return spring 306. The sliding block 302 drives the driving shaft 303 and the impact shaft 304 to reset. When the impact shaft 304 resets, it impacts the vibration shaft 305, thereby generating vibration to the mandrel 200. With the continuous rotation of the rotating shaft 205, the impact shaft 304 cyclically generates vibration to the vibration shaft 305 and the mandrel 200. Through the rotation and vibration of the mandrel 200, the micro-vibration can make the gas in the metal liquid more easily escape during the process of pressure casting metal liquid. During the pressure casting process, the metal liquid is easily filled into the cavity at high speed and air is easily formed into pores. The continuous vibration of the mandrel 200 can break the gathering state of the gas in the metal liquid, so that small bubbles are combined into large bubbles and floated out, thereby reducing the pore defects in the product and improving the density of the product. At the same time, the vibration can make the metal liquid produce slight fluctuation, which is helpful for the metal liquid to better fill into every corner of the cavity, so that the product is more complete and uniform, and the overall pressure casting quality is effectively improved.

[0056] After the injection molding is completed, the motor 105 stops running until the product is cooled and shaped and demolded, the mandrel 200 is first withdrawn, in this process, the motor 105 is started to rotate, at the same time, the cylinder 106 is started, the output end is extended to push the mandrel 200 out of the base 100, in this process, the mandrel 200 rotates to drive the rotating shaft 205 to accelerate rotation, the rotating shaft 205 drives the gear three 206 to rotate, the gear three 206 drives the gear four 207 to accelerate rotation through meshing, when the gear four 207 rotates, it can drive the rotating wheel one 400 and the rotating wheel three 406 to rotate, further drive the transmission belt 401 and the polishing belt 407 to rotate, the transmission belt 401 first passes through the product inner wall area, through the rotation of the transmission belt 401, the cutter 402 drives the product inner wall to be cut and trimmed, and the excess part is removed, further, the polishing belt 407 rotates at the same time, passes through the cutter 402 cutting area, and automatically polishes and trims the area after cutting, so that the product inner side wall after demolding is automatically polished and trimmed during demolding, and when the cutter 402 passes through the area with poor flatness and a large protrusion, the cutter 402 is pushed towards the rotating wheel two 403 while rotating and polishing the protrusion, the hydraulic oil in the float one 404 is squeezed into the inside of the rotating wheel four 408 through the communication port 410 and the liquid inlet pipe 411 by extruding the float one 404, the float two 409 is driven to expand the polishing belt 407 to a certain extent, and because the flow area of the liquid inlet pipe 411 is larger than that of the liquid return pipe 412, the hydraulic oil in the rotating wheel four 408 needs a certain time to return to the inside of the rotating wheel two 403 after pressure balance, so the polishing belt 407 can be expanded for a certain time, so that the protrusion in the product is automatically detected during cutting and trimming, when the protrusion is too large, the cutting diameter and area can be expanded after cutting, and the polishing strength of the cutting and trimming area is self-adaptively improved, so that the overall quality of the product is improved.

[0057] It should be noted that the communication shaft 405, the rotating wheel two 403 and the rotating wheel four 408 can be fixedly designed, the float one 404 and the float two 409 are designed to be away from the axis of the communication shaft 405, and the communication shaft 405, the rotating wheel two 403 and the rotating wheel four 408 can be designed in multiple groups to improve the detection and overall strengthening polishing effect.

[0058] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A scope housing die-casting mold comprising a base (100), characterized in that, The inside of the base (100) is provided with a lower mold (103) and an upper mold (104), and the inside of the base (100) is also provided with a mandrel (200), and the side wall of the base (100) is provided with a motor (105) and a pneumatic cylinder (106), one end of the motor (105) is fixedly connected with one end of the mandrel (200), the other end of the mandrel (200) is connected with the telescopic end of the pneumatic cylinder (106), and the inside of the mandrel (200) is provided with a vibration mechanism; The vibration mechanism comprises a fixed shaft (201) rotatably connected to the end of the mandrel (200), a gear ring (203) is formed in the side wall of the mandrel (200), the fixed shaft (201) is provided with a gear one (202) engaged with the gear ring (203), a rotating shaft (205) is rotatably connected in the inside of the mandrel (200), the end of the rotating shaft (205) is provided with a gear two (204) engaged with the gear one (202), the side wall of the rotating shaft (205) is fixedly connected with a cam (300), the inside wall of the mandrel (200) is sleeved with a sliding block (302), the sliding block (302) is connected with a drive shaft (303), the side wall of the cam (300) is provided with a guide groove (301) matched with the drive shaft (303), a return spring (306) is connected between the sliding block (302) and the mandrel (200), the inside wall of the mandrel (200) is provided with a vibration shaft (305), one side of the sliding block (302) close to the mandrel (200) is provided with a striking shaft (304) matched with the vibration shaft (305), and the inside of the mandrel (200) is also provided with a processing mechanism. The telescopic end of the pneumatic cylinder (106) is provided with an electromagnet (107), and one end of the electromagnet (107) close to the fixed shaft (201) is provided with a clamping shaft (108) movably sleeved with the fixed shaft (201).

2. A scope housing die-cast mold according to claim 1, wherein, The guide groove (301) is arc-shaped, and the distances from the two ends of the guide groove (301) to the axis of the rotating shaft (205) are different.

3. The scope housing die-cast mold of claim 1, wherein, The sliding block (302) is uniformly distributed with multiple groups along the axis of the rotating shaft (205), and the number of the sliding blocks (302) connected by each group of the drive shaft (303) is at least two groups and is uniformly distributed along the drive shaft (303).

4. The scope housing die-cast mold of claim 1, wherein, The processing mechanism comprises a gear three (206) arranged on the outer wall of the rotating shaft (205), a gear four (207) rotatably connected to the inside of the mandrel (200), a rotating wheel one (400), a rotating wheel two (403), a rotating wheel three (406) and a rotating wheel four (408) rotatably connected to the inside of the mandrel (200), both ends of the gear four (207) are in transmission connection with the rotating wheel one (400) and the rotating wheel three (406) through shafts, the outer wall of the rotating wheel one (400) and the rotating wheel two (403) is in transmission connection with a transmission belt (401), the outer wall of the rotating wheel three (406) and the rotating wheel four (408) is in transmission connection with a polishing belt (407), the outer wall of the transmission belt (401) is provided with a cutter (402), and a communication assembly is arranged between the rotating wheel two (403) and the rotating wheel four (408).

5. A scope housing die-cast mold according to claim 4, wherein, The rotating wheel one (400) is provided in multiple groups, the rotating wheel two (403) is arranged between the multiple groups of rotating wheel one (400), and the arc profile surrounded by the rotating wheel one (400) and the rotating wheel two (403) is close to the outer wall profile of the mandrel (200).

6. A scope housing die-cast mold according to claim 5, wherein, The communication assembly comprises a floating block one (404) movably sleeved on the outer wall of the rotating wheel two (403), a floating block two (409) sleeved on the outer wall of the rotating wheel four (408), a communication shaft (405) connected between the rotating wheel four (408) and the rotating wheel two (403), and a communication port (410) communicated with the communication shaft (405) formed in the inside of the rotating wheel four (408) and the rotating wheel two (403), the bottom of the floating block one (404) and the floating block two (409) is provided with a spring for resetting, and the inside of the communication shaft (405) is provided with a liquid inlet pipe (411) and a liquid return pipe (412) for communicating the rotating wheel two (403) and the rotating wheel four (408).

7. A scope housing die-cast mold according to claim 6, wherein The inside of the liquid inlet pipe (411) is provided with a one-way valve with a flow direction towards the rotating wheel four (408), the inside of the liquid return pipe (412) is provided with a one-way valve with a flow direction towards the inside of the rotating wheel two (403), and the flow cross-sectional area of the liquid inlet pipe (411) is greater than that of the liquid return pipe (412).

8. A die casting method of a die casting mold for a scope housing according to claim 1, characterized by, The die casting method comprises the following steps: S1: start the air cylinder (106) and the electromagnet (107), pull the mandrel (200) into the die casting cavity formed between the lower die (103) and the upper die (104); S2: after sealing, press the metal melt into the die casting cavity formed by the lower die (103), the upper die (104) and the mandrel (200) through the die casting port; S3: start the motor (105), drive the mandrel (200) to rotate for a period of time during die casting, and then stop the motor (105); S4: after cooling, start the motor (105) and the air cylinder (106), drive the mandrel (200) to rotate and exit to complete demolding.

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