A die-casting mold for manufacturing a transmission housing

Abstract

This invention relates to the field of die-casting mold technology and discloses a die-casting mold for producing a transmission housing. The device includes a base plate and a base fixedly installed at the top center of the base plate. A fixed mold is slidably installed on the top of the base plate. Guide rods and cylinders are fixedly installed around the top of the base plate. The same moving mold is fixedly installed inside the sleeve portion of the four cylinders. A demolding assembly is provided on the outer side of the moving mold, and a cooling assembly is provided on the top of the moving mold. The demolding assembly includes an outer ring plate fixedly connected to the upper part of the outer side of the moving mold. Four fixed frames are symmetrically slidably installed on the bottom of the outer ring plate. The cooling assembly includes a curved tube embedded and fixedly installed inside the moving mold. By setting the demolding assembly, the reciprocating linear sliding of the fixed frames is realized, and the first striking rod, the second striking rod, and the pressure block strike the moving mold in sequence, which improves the demolding efficiency and reduces the impact force on the moving mold, thereby reducing damage to the housing casting.

Description

Technical Field

[0001] This invention relates to the field of die-casting mold technology, specifically to a die-casting mold for producing a transmission housing. Background Technology

[0002] Die-casting molds for gearbox housings are important tools in automotive parts manufacturing, and their design and use directly affect the quality and production efficiency of gearbox housings.

[0003] For example, a die-casting mold for a gearbox housing, as disclosed in announcement number CN223145966U, includes an upper mold fixing plate and a lower mold fixing plate. An upper template is fixed to the bottom of the upper mold fixing plate, and a mounting base is fixed to the top of the lower mold fixing plate. Symmetrical lower templates are movably connected to both sides of the top of the mounting base. A forming cavity is opened at the connection point of the two lower templates. A connecting mechanism is provided between the lower templates and the lower mold fixing plate. By means of a connecting rod and a clamping block, the two lower templates can be fixed to the top of the mounting base and spliced ​​into a complete lower template. The entire mold can be opened for easy cleaning and maintenance, and the pressure plates on both sides can lift the demolding template for easy demolding.

[0004] However, due to the presence of deep cavities or narrow grooves in the gearbox housing, these structures adhere closely after molding. Direct demolding can damage these structures, affecting the quality of the finished product. This method of directly lifting the casting through a demolding template results in uneven stress on the casting, potentially causing breakage at the corners. Furthermore, existing devices that use a vibratory motor for vibration-assisted demolding provide better vibration to areas closer to the motor but poorer vibration to areas further away, hindering rapid demolding of the entire casting and reducing demolding effectiveness and integrity.

[0005] Therefore, a die-casting mold for producing transmission housings is proposed to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a die-casting mold for producing a transmission housing, in order to solve the problems of uneven force during mold demolding caused by the lifting demolding method and the existing device for demolding by vibration motor, which makes it difficult to quickly demold the casting as a whole, thus reducing the demolding effect and demolding integrity.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a die-casting mold for producing a transmission housing, comprising a base plate and a base fixedly installed in the middle of the top of the base plate, wherein a fixed mold is slidably installed on the top of the base plate, and guide rods and cylinders are fixedly installed around the top of the base plate.

[0008] Also includes:

[0009] The same moving mold is fixedly installed on the inner side of the sleeve portion of the four cylinders, a demolding assembly is provided on the outer side of the moving mold, and a cooling assembly is provided on the top of the moving mold;

[0010] The demolding assembly includes an outer ring plate fixedly connected to the upper part of the outer side of the moving mold. The cylinders are evenly fixedly installed around the bottom of the outer ring plate. Four fixed frames are symmetrically slidably installed on the bottom of the outer ring plate. A drive motor is symmetrically fixedly installed around the bottom of the outer ring plate. An arc-shaped block is fixedly connected to the output end of the drive motor. Two vertical strips are fixedly connected to the inner side of the fixed frame. A contact plate is fixedly connected to one side of each vertical strip.

[0011] The inner side of the fixed frame is uniformly fixedly connected with a plurality of first fixing strips, and the outer side of the first fixing strips is fixedly connected with a first knocking rod. The inner side of the fixed frame is also uniformly fixedly connected with a plurality of second fixing strips, and the outer side of the second fixing strips is fixedly connected with a second knocking rod. The demolding assembly also includes a rotating plate rotatably mounted on the outer side of the moving mold.

[0012] Preferably, the four outer ring plates are located on the four sides of the moving mold. The outer ring plates are slidably connected to the guide rod. The bottom of the outer ring plates is also provided with top grooves around the perimeter. An upper rod is fixedly connected inside the top groove. A slider is slidably connected to the outside of the upper rod. The bottom of the slider is fixedly connected to the fixed frame. A spring is sleeved on the outside of the upper rod. The two ends of the spring are fixedly connected to the inner wall of the top groove and the slider, respectively. There are no fewer than four drive motors. A fixed ring is fixedly connected to the side of the first striking rod near the moving mold. An unfolding rod is rotatably installed on the outside of the fixed ring. Limiting plates are also symmetrically fixedly connected to the outside of the fixed ring. A pressure block is fixedly connected to the end of the rotating plate near the moving mold. A spring is fixedly connected between the rotating plate and the moving mold.

[0013] By adopting the above technical solution, the drive motor is started and the fixed frame slides back and forth in a straight line at a constant frequency. The first knocking rod, the second knocking rod, and the pressure block strike the moving mold in sequence, which not only improves the demolding efficiency but also reduces the impact force on the moving mold, thereby reducing damage to the deep cavity or narrow groove of the shell casting.

[0014] Preferably, the top of the guide rod is fixedly connected to the same upper plate, and there are no fewer than four guide rods and cylinders. The top of the moving mold is fixedly installed with an injection pipe, which is slidably connected to the upper plate. The lower outer perimeter of the moving mold is fixedly connected with a bottom stop, and the arc-shaped block is rotatably connected to the bottom stop. A sliding rod is fixedly connected to the side of the fixed frame near the moving mold, and the sliding rod is slidably connected to the moving mold. There are no fewer than three vertical bars and three first fixed bars.

[0015] By adopting the above technical solution, the cylinder is started, and the cylinder retracts to drive the outer ring plate and the moving mold to descend, so that the moving mold and the fixed mold are closed. Then, slurry is injected through the injection pipe to realize the die casting of the shell casting.

[0016] Preferably, there are no fewer than four first striking rods, and multiple sets of connecting plates are symmetrically fixedly connected to the outer side of the fixing ring. Each set of connecting plates includes two symmetrically arranged plates, and a rotating shaft is rotatably connected between two adjacent connecting plates.

[0017] By adopting the above technical solution, the first striking rod first drives the unfolding rod to contact the moving mold. The unfolding rod is squeezed and drives the rotating shaft to rotate. The unfolding rod acts on the torsion spring, and the limiting plate limits the rotation of the unfolding rod, thereby facilitating the subsequent striking of the moving mold by the first striking rod.

[0018] Preferably, the unfolding rod is fixedly connected to the rotating shaft, a torsion spring is sleeved on the outside of the rotating shaft, and the two ends of the torsion spring are fixedly connected to the unfolding rod and the connecting plate respectively. There are no fewer than four unfolding rods and limiting plates, and no fewer than three second knocking rods.

[0019] By adopting the above technical solution, the unfolding of the unfolding rod can expand the striking range, thereby helping to improve the demolding effect.

[0020] Preferably, a push block is fixedly connected to the outer side of the second striking rod, and a fixing plate is rotatably connected to the bottom of the rotating plate. The fixing plate is fixedly connected to the moving mold, and the number of rotating plates is the same as that of the second striking rod.

[0021] By adopting the above technical solution, the movement of the second striking rod will cause the push block to squeeze the rotating plate. The rotating plate rotates and stretches the second spring. Then, the second striking rod strikes the moving mold and retracts to reset. At this time, the elastic force of the second spring causes the rotating plate to rotate back to reset. The rotating plate drives the pressure block to strike the moving mold again.

[0022] Preferably, the cooling assembly includes a curved tube embedded and fixedly installed inside the moving mold, one end of the curved tube is fixedly connected to a water inlet pipe, and the other end of the curved tube is fixedly connected to a water outlet pipe.

[0023] By adopting the above technical solution, water flows into the curved pipe through the water inlet pipe. The curved structure of the curved pipe facilitates full contact between the water and the moving mold.

[0024] Preferably, both the water inlet pipe and the water outlet pipe are located at the top of the moving mold, and an annular cylinder is fixedly connected to the outside of the water outlet pipe, with the water outlet pipe communicating with the annular cylinder.

[0025] By adopting the above technical solution, water flows into the annular cylinder through the curved pipe, which facilitates the uniform spraying of the top surface of the moving mold.

[0026] Preferably, multiple inner spray pipes are uniformly fixedly installed on the inner side of the annular cylinder, and an outer spray pipe is uniformly fixedly installed on the outer side of the annular cylinder. There are no fewer than four inner and four outer spray pipes. An auxiliary push rod is fixedly installed in the internal slot of the base, and the telescopic end of the auxiliary push rod is fixedly connected to the bottom surface of the fixed mold.

[0027] By adopting the above technical solution, after the water enters the annular cylinder, it will be sprayed out from the inner and outer nozzles, which facilitates the cooling of the moving mold.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up a demolding component, after molding, the drive motor is started to work, and the fixed frame will slide back and forth in a straight line at a constant frequency. The first striking rod, the second striking rod, and the pressure block strike the moving mold in sequence, which not only improves the demolding efficiency but also reduces the impact force on the moving mold, thereby reducing damage to the deep cavity or narrow groove of the shell casting. The specific details are as follows:

[0029] By setting up a demolding assembly, the operator activates a cylinder. The cylinder retracts, causing the outer ring plate and the moving mold to descend, closing the moving mold with the fixed mold. Then, slurry is injected through the injection pipe, achieving die casting of the shell part. After forming, the drive motor is activated, causing the arc-shaped block to rotate. When the arc-shaped block rotates to the contact plate position, it squeezes the contact plate and the vertical bar. The vertical bar moves the fixed frame, which in turn moves the sliding rod inside the moving mold. The fixed frame also moves the slider on the upper rod, compressing the first spring. When the arc-shaped block separates from the contact plate, the spring force causes the slider and fixed frame to move and reset. The fixed frame then moves the contact plate, achieving reciprocating linear sliding of the fixed frame. The movement of the fixed frame moves the first and second striking rods, causing them to intermittently strike the moving mold, facilitating demolding. When the first striking rod approaches the moving mold, it first causes the unfolding rod to contact the moving mold. The unfolding rod, under pressure, causes the rotating shaft to rotate. The unfolding rod acts on the torsion spring, and the limiting plate limits the rotation of the unfolding rod, thus facilitating the subsequent impact of the first striking rod on the moving mold. The unfolding of the unfolding rod expands the striking range, thereby improving the demolding effect. The movement of the second striking rod will drive the push block to squeeze the rotating plate. The rotating plate rotates and stretches the second spring. Then, the second striking rod strikes the moving mold and retracts to reset. At this time, the elastic force of the second spring drives the rotating plate to rotate back to reset. The rotating plate drives the pressure block to strike the moving mold again, thus realizing a reciprocating cycle and achieving the function of separate striking. Maintaining a constant frequency, the first striking rod, the second striking rod, and the pressure block strike the moving mold in sequence, which not only improves the demolding efficiency but also reduces the impact force on the moving mold, thereby reducing damage to the deep cavity or narrow groove of the shell casting. Compared with the traditional structure of direct high-frequency striking, its striking force is more concentrated, resulting in a greater impact force on the mold and making it easier to damage the mold. Therefore, the traditional high-frequency striking structure is not suitable.

[0030] By setting up a cooling component, after die casting, the water inlet pipe is connected to an external water pipe, and the water outlet pipe is connected to an external recycling pipe. This allows water to flow into a curved pipe through the water inlet pipe. The curved structure of the curved pipe facilitates full contact between the water and the moving mold. Then, the water flows into an annular cylinder, causing the inner and outer spray pipes to spray water outwards. This facilitates uniform spraying of the top surface of the moving mold, thereby cooling the moving mold, assisting in the demolding operation of the moving mold, and making it easier to demold the subsequent shell casting. Finally, the water flows out from the water outlet pipe for recycling. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the outer ring plate descending according to the present invention;

[0033] Figure 3 This is a schematic cross-sectional view of the outer ring plate of the present invention;

[0034] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0035] Figure 5 This is a schematic diagram of the bottom retaining edge structure of the present invention;

[0036] Figure 6 This is a schematic cross-sectional view of the fixed frame structure of the present invention;

[0037] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B;

[0038] Figure 8 This is a schematic diagram of the first striking rod structure of the present invention;

[0039] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C;

[0040] Figure 10 This is a schematic diagram of the second striking rod structure of the present invention;

[0041] Figure 11 For the present invention Figure 10 Enlarged structural diagram at point D;

[0042] Figure 12 This is a schematic diagram of the rotating plate structure of the present invention;

[0043] Figure 13 This is a schematic cross-sectional view of the moving mold structure of the present invention;

[0044] Figure 14 For the present invention Figure 13Enlarged structural diagram at point E;

[0045] Figure 15 This is a schematic diagram of the auxiliary push rod structure of the present invention.

[0046] In the diagram: 1. Base plate; 2. Base; 3. Fixed mold; 4. Guide rod; 5. Upper plate; 6. Moving mold; 7. Demolding assembly; 71. Outer ring plate; 72. Top groove; 73. Upper rod; 74. Slider; 75. Spring 1; 76. Fixing frame; 77. Drive motor; 78. Bottom stop; 79. Arc block; 710. Lower sliding rod; 711. Vertical bar; 712. Contact plate; 713. First fixing bar; 714. First tapping rod; 715. Fixing ring; 716. Connector 717. Plate; 718. Rotating shaft; 719. Unfolding rod; 720. Torsion spring; 721. Limiting plate; 722. Second fixing bar; 723. Second knocking rod; 724. Push block; 725. Fixing plate; 726. Rotating plate; 727. Pressing block; 728. Spring II; 8. Cooling assembly; 81. Water inlet pipe; 82. Curved pipe; 83. Water outlet pipe; 84. Annular cylinder; 85. Inner spray pipe; 86. Outer spray pipe; 9. Cylinder; 10. Injection pipe; 11. Auxiliary push rod. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Please see Figure 1 The present invention provides a technical solution: a die-casting mold for producing a transmission housing, comprising a base plate 1 and a base 2 fixedly installed in the middle of the top of the base plate 1, a fixed mold 3 slidably installed on the top of the base 2, and guide rods 4 and cylinders 9 fixedly installed around the top of the base plate 1.

[0049] The same moving mold 6 is fixedly installed on the inner side of the sleeve of the four cylinders 9, and a demolding component 7 is provided on the outer side of the moving mold 6.

[0050] like Figure 1 and Figure 4 - Figure 12 As shown, the demolding assembly 7 includes an outer ring plate 71 fixedly connected to the upper part of the outer side of the moving mold 6. Cylinders 9 are evenly fixedly installed around the bottom of the outer ring plate 71. Four fixed frames 76 are symmetrically slidably installed on the bottom of the outer ring plate 71. Drive motors 77 are symmetrically fixedly installed around the bottom of the outer ring plate 71. An arc-shaped block 79 is fixedly connected to the output end of the drive motor 77. Two vertical bars 711 are fixedly connected to the inner side of the fixed frames 76. A contact plate 712 is fixedly connected to one side of the vertical bars 711.

[0051] Multiple first fixing strips 713 are uniformly fixedly connected to the inner side of the fixing frame 76, and a first knocking rod 714 is fixedly connected to the outer side of the first fixing strips 713. Multiple second fixing strips 721 are also uniformly fixedly connected to the inner side of the fixing frame 76, and a second knocking rod 722 is fixedly connected to the outer side of the second fixing strips 721. The demolding assembly 7 also includes a rotating plate 725 rotatably mounted on the outer side of the moving mold 6.

[0052] Four outer ring plates 71 are located on the four sides of the moving mold 6. The outer ring plates 71 are slidably connected to the guide rod 4. The bottom of the outer ring plates 71 is also provided with top grooves 72. The top rod 73 is fixedly connected inside the top groove 72. The slider 74 is slidably connected to the outside of the top rod 73. The bottom of the slider 74 is fixedly connected to the fixed frame 76. A spring 75 is sleeved on the outside of the top rod 73. The two ends of the spring 75 are fixedly connected to the inner wall of the top groove 72 and the slider 74, respectively. There are no fewer than four drive motors 77. A fixing ring 715 is fixedly connected to the side of the first striking rod 714 near the moving mold 6. An unfolding rod 718 is rotatably installed on the outside of the fixing ring 715. A limit plate 720 is also symmetrically fixedly connected to the outside of the fixing ring 715. A pressure block 726 is fixedly connected to the end of the rotating plate 725 near the moving mold 6. A spring 727 is fixedly connected between the rotating plate 725 and the moving mold 6.

[0053] The top of the guide rod 4 is fixedly connected to the same upper plate 5. There are no fewer than four guide rods 4 and cylinders 9. The top of the moving mold 6 is fixedly installed with an injection pipe 10, which is slidably connected to the upper plate 5. The lower outer side of the moving mold 6 is fixedly connected with a bottom stop 78. The arc block 79 is rotatably connected to the bottom stop 78. The fixed frame 76 is fixedly connected to a sliding rod 710 on the side near the moving mold 6. The sliding rod 710 is slidably connected to the moving mold 6. There are no fewer than three vertical bars 711 and first fixed bars 713.

[0054] There are at least four first striking rods 714. Multiple sets of connecting plates 716 are symmetrically fixed to the outer side of the fixing ring 715. Each set of connecting plates 716 includes two symmetrically arranged plates. A rotating shaft 717 is rotatably connected between two adjacent connecting plates 716.

[0055] The unfolding rod 718 is fixedly connected to the rotating shaft 717. A torsion spring 719 is sleeved on the outside of the rotating shaft 717. The two ends of the torsion spring 719 are fixedly connected to the unfolding rod 718 and the connecting plate 716 respectively. There are no fewer than four unfolding rods 718 and limiting plates 720, and no fewer than three second striking rods 722.

[0056] like Figure 10 - Figure 12As shown, a push block 723 is fixedly connected to the outer side of the second striking rod 722, and a fixing plate 724 is rotatably connected to the bottom of the rotating plate 725. The fixing plate 724 is fixedly connected to the moving mold 6. The number of rotating plates 725 is the same as that of the second striking rod 722.

[0057] Example 1: As Figure 1 and Figure 4 - Figure 12 As shown, the operator starts the cylinder 9, which contracts and causes the outer ring plate 71 and the moving mold 6 to descend, so that the moving mold 6 and the fixed mold 3 are closed. Then, slurry is injected through the injection pipe 10 to achieve die casting of the shell casting. After the casting is completed, the drive motor 77 is started. The drive motor 77 drives the arc block 79 to rotate. When the arc block 79 rotates to the position of the contact plate 712, it will squeeze the contact plate 712 and the vertical bar 711. The vertical bar 711 drives the fixed frame 76 to move. The fixed frame 76 drives the sliding rod 710 to slide inside the moving mold 6.

[0058] The fixed frame 76 also drives the slider 74 to slide on the upper rod 73. The slider 74 compresses the spring 75. When the arc block 79 separates from the contact plate 712, the elastic force of the spring 75 drives the slider 74 and the fixed frame 76 to move and reset. The fixed frame 76 drives the contact plate 712 to reset, realizing the reciprocating linear sliding of the fixed frame 76. The movement of the fixed frame 76 drives the first tapping rod 714 and the second tapping rod 722 to move, so that the first tapping rod 714 and the second tapping rod 722 intermittently tap the moving mold 6, thereby facilitating the demolding operation.

[0059] When the first striking rod 714 approaches the moving mold 6, the first striking rod 714 first drives the unfolding rod 718 to contact the moving mold 6. The unfolding rod 718 is squeezed and drives the rotating shaft 717 to rotate. The unfolding rod 718 acts on the torsion spring 719, and the limiting plate 720 limits the rotation of the unfolding rod 718, thereby facilitating the subsequent striking of the moving mold 6 by the first striking rod 714. The unfolding of the unfolding rod 718 expands the striking range, thereby helping to improve the demolding effect.

[0060] The movement of the second striking rod 722 causes the push block 723 to press the rotating plate 725. The rotating plate 725 rotates and stretches the second spring 727. Then, the second striking rod 722 strikes the moving mold 6 and retracts to reset. At this time, the elastic force of the second spring 727 causes the rotating plate 725 to rotate back to reset. The rotating plate 725 drives the pressure block 726 to strike the moving mold 6 again, thus realizing a reciprocating cycle and achieving the function of separating the striking. Maintaining a constant frequency, the first striking rod 714, the second striking rod 722, and the pressure block 726 strike the moving mold 6 in sequence, which improves the demolding efficiency and reduces the impact force on the moving mold 6, thereby reducing damage to the deep cavity or narrow groove of the shell casting. Compared with the traditional structure of direct high-frequency striking, its striking force is more concentrated, resulting in a greater impact force on the mold and making it easier to damage the mold. Therefore, the traditional high-frequency striking structure is not suitable.

[0061] like Figure 2 and Figure 13 - Figure 15 As shown, a cooling assembly 8 is provided on the top of the moving mold 6. The cooling assembly 8 includes a curved tube 82 embedded and fixedly installed inside the moving mold 6. One end of the curved tube 82 is fixedly connected to a water inlet pipe 81, and the other end of the curved tube 82 is fixedly connected to a water outlet pipe 83.

[0062] Both the water inlet pipe 81 and the water outlet pipe 83 are located at the top of the moving mold 6. An annular cylinder 84 is fixedly connected to the outside of the water outlet pipe 83, and the water outlet pipe 83 is connected to the annular cylinder 84.

[0063] Multiple inner nozzles 85 are uniformly fixedly installed on the inner side of the annular cylinder 84, and external nozzles 86 are uniformly fixedly installed on the outer side of the annular cylinder 84. There are no fewer than four inner nozzles 85 and four external nozzles 86. An auxiliary push rod 11 is fixedly installed in the slot of the base 2. The telescopic end of the auxiliary push rod 11 is fixedly connected to the bottom surface of the fixed mold 3.

[0064] Example 2: Figure 2 and Figure 13 - Figure 15 As shown, after die casting, the water inlet pipe 81 is connected to the external water pipe, and the water outlet pipe 83 is connected to the external recovery pipe, so that the water flows into the curved pipe 82 through the water inlet pipe 81. The curved structure of the curved pipe 82 facilitates full contact between the water and the moving mold 6. Then the water flows into the annular cylinder 84, so that the inner spray pipe 85 and the outer spray pipe 86 will spray water outward, which facilitates uniform spraying on the top surface of the moving mold 6, thereby facilitating the cooling of the moving mold 6, assisting the demolding operation of the moving mold 6, and facilitating the subsequent demolding of the shell casting.

[0065] Working principle: When using this device, firstly, as... Figure 1 - Figure 15As shown, the operator starts cylinder 9, which contracts, causing the outer ring plate 71 and the moving mold 6 to descend, closing the moving mold 6 with the fixed mold 3. Then, slurry is injected through the injection pipe 10, achieving die casting of the shell part. The water inlet pipe 81 is connected to an external water pipe, and the water outlet pipe 83 is connected to an external recovery pipe, allowing water to flow through the water inlet pipe 81 into the curved pipe 82. The inner spray pipe 85 and the outer spray pipe 86 spray water outwards, facilitating uniform spraying of the top surface of the moving mold 6, thus facilitating the cleaning of the moving mold. Mold 6 is cooled down to facilitate demolding of the moving mold 6. After molding, drive motor 77 is activated, which rotates the arc-shaped block 79. When the arc-shaped block 79 rotates to the position of contact plate 712, it presses against contact plate 712 and vertical bar 711. Vertical bar 711 moves the fixed frame 76. When the arc-shaped block 79 separates from contact plate 712, the elastic force of spring 75 moves slider 74 and fixed frame 76 to reset, realizing the reciprocating linear sliding of fixed frame 76. The movement of the first striking rod 714 and the second striking rod 722 causes them to intermittently strike the moving mold 6. When the first striking rod 714 approaches the moving mold 6, it first causes the unfolding rod 718 to contact the moving mold 6. The unfolding rod 718, under pressure, causes the rotating shaft 717 to rotate. The unfolding rod 718 acts on the torsion spring 719, and the limiting plate 720 limits the rotation of the unfolding rod 718, thus facilitating the subsequent striking of the moving mold 6 by the first striking rod 714. The expansion of rod 718 increases the striking range, thereby improving the demolding effect. The movement of the second striking rod 722 will drive the push block 723 to squeeze the rotating plate 725. The rotating plate 725 rotates and stretches the second spring 727. Then, the second striking rod 722 strikes the moving mold 6 and retracts to reset. At this time, the elastic force of the second spring 727 drives the rotating plate 725 to rotate back to reset. The rotating plate 725 drives the pressure block 726 to strike the moving mold 6 again, thus realizing a reciprocating movement cycle and achieving the function of separating the striking.

[0066] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0067] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A die-casting mold for producing a transmission housing, comprising a base plate (1) and a base (2) fixedly installed at the top center of the base plate (1), wherein a fixed mold (3) is slidably installed on the top of the base (2), and guide rods (4) and cylinders (9) are fixedly installed around the top of the base plate (1). Its features are, Also includes: The same moving mold (6) is fixedly installed on the inner side of the sleeve portion of the four cylinders (9), and a demolding assembly (7) is provided on the outer side of the moving mold (6), and a cooling assembly (8) is provided on the top of the moving mold (6). The demolding assembly (7) includes an outer ring plate (71) fixedly connected to the upper part of the outer side of the moving mold (6). The cylinder (9) is evenly fixedly installed around the bottom of the outer ring plate (71). Four fixed frames (76) are symmetrically slidably installed on the bottom of the outer ring plate (71). A drive motor (77) is symmetrically fixedly installed around the bottom of the outer ring plate (71). An arc block (79) is fixedly connected to the output end of the drive motor (77). Two vertical bars (711) are fixedly connected to the inner side of the fixed frame (76). A contact plate (712) is fixedly connected to one side of the vertical bar (711). When the arc block (79) rotates to the position of the contact plate (712), it will squeeze the contact plate (712) and the vertical bar (711). The vertical bar (711) will drive the fixed frame (76) to move. The inner side of the fixed frame (76) is uniformly fixedly connected with a plurality of first fixed strips (713), and the outer side of the first fixed strips (713) is fixedly connected with a first knocking rod (714). The inner side of the fixed frame (76) is also uniformly fixedly connected with a plurality of second fixed strips (721), and the outer side of the second fixed strips (721) is fixedly connected with a second knocking rod (722). The demolding assembly (7) also includes a rotating plate (725) rotatably mounted on the outer side of the moving mold (6). The outer side of the second knocking rod (722) is fixedly connected with a push block (723). The bottom of the rotating plate (725) is rotatably connected with a fixed piece (724). The fixed piece (724) is fixedly connected to the moving mold (6). The number of rotating plates (725) is the same as the number of second knocking rods (722). The end of the rotating plate (725) near the moving mold (6) is fixedly connected with a pressure block (726). A spring (727) is fixedly connected between the rotating plate (725) and the moving mold (6).

2. The die-casting mold for producing a transmission housing according to claim 1, characterized in that: The four outer ring plates (71) are located on the four sides of the moving mold (6). The outer ring plates (71) are slidably connected to the guide rod (4). The bottom of the outer ring plates (71) is also provided with a top groove (72). The top groove (72) is fixedly connected to the inside of the top rod (73). The upper rod (73) is slidably connected to the outside of the upper rod (73). The bottom of the upper rod (74) is fixedly connected to the fixed frame (76). The upper rod (73) is sleeved with a spring (75). The two ends of the spring (75) are fixedly connected to the inner wall of the top groove (72) and the upper rod (74) respectively. There are no fewer than four drive motors (77). The first knocking rod (714) is fixedly connected to a fixed ring (715) on the side near the moving mold (6). The outer side of the fixed ring (715) is rotatably installed with an unfolding rod (718). The outer side of the fixed ring (715) is also symmetrically fixedly connected with a limit plate (720).

3. The die-casting mold for producing a transmission housing according to claim 2, characterized in that: The top of the guide rod (4) is fixedly connected to the same upper plate (5). There are no fewer than four guide rods (4) and cylinders (9). The top of the moving mold (6) is fixedly installed with an injection tube (10). The injection tube (10) is slidably connected to the upper plate (5). The lower outer side of the moving mold (6) is fixedly connected with a bottom stop (78). The arc block (79) is rotatably connected to the bottom stop (78). The fixed frame (76) is fixedly connected with a sliding rod (710) on the side close to the moving mold (6). The sliding rod (710) is slidably connected to the moving mold (6). There are no fewer than three vertical bars (711) and first fixed bars (713).

4. The die-casting mold for producing a transmission housing according to claim 3, characterized in that: There are no fewer than four first knocking rods (714), and multiple sets of connecting plates (716) are symmetrically fixedly connected to the outer side of the fixing ring (715). Each set of connecting plates (716) includes two symmetrically arranged plates, and a rotating shaft (717) is rotatably connected between two adjacent connecting plates (716).

5. A die-casting mold for producing a transmission housing according to claim 4, characterized in that: The unfolding rod (718) is fixedly connected to the rotating shaft (717). A torsion spring (719) is sleeved on the outside of the rotating shaft (717). The two ends of the torsion spring (719) are fixedly connected to the unfolding rod (718) and the connecting plate (716) respectively. There are no fewer than four unfolding rods (718) and limiting plates (720), and no fewer than three second knocking rods (722).

6. The die-casting mold for producing a transmission housing according to claim 1, characterized in that: The cooling assembly (8) includes a curved tube (82) embedded and fixedly installed inside the moving mold (6). One end of the curved tube (82) is fixedly connected to a water inlet pipe (81), and the other end of the curved tube (82) is fixedly connected to a water outlet pipe (83).

7. A die-casting mold for producing a transmission housing according to claim 6, characterized in that: The water inlet pipe (81) and the water outlet pipe (83) are both located at the top of the moving mold (6). An annular cylinder (84) is fixedly connected to the outside of the water outlet pipe (83), and the water outlet pipe (83) is connected to the annular cylinder (84).

8. The die-casting mold for producing a transmission housing according to claim 7, characterized in that: Multiple inner nozzles (85) are uniformly fixedly installed on the inner side of the annular cylinder (84), and external nozzles (86) are uniformly fixedly installed on the outer side of the annular cylinder (84). There are no fewer than four inner nozzles (85) and four external nozzles (86). An auxiliary push rod (11) is fixedly installed in the slot of the base (2). The telescopic end of the auxiliary push rod (11) is fixedly connected to the bottom surface of the fixed mold (3).

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