A die-casting mold for a steering housing that can eliminate air holes

Abstract

The present invention relates to the technical field of die casting, and specifically relates to a die-casting mold for a steering housing capable of eliminating air holes, including a base, a workbench, a work box, a mold clamping member, and an injection member. The workbench is arranged on the base, the work box is arranged on the workbench, the mold clamping member is arranged on the work box, and the injection member is arranged on the workbench; further included are: a movable seat, the movable seat is slidably arranged on the workbench. In this die-casting mold for a steering housing capable of eliminating air holes, through the cooperation of the provided triggering mechanism and the air suction mechanism, the gas in the mold cavity can be sucked during the die-casting process, thereby avoiding the generation of air holes inside the die-cast part. And through the cooperation of the provided linkage mechanism and the movable plate, as well as the setting of the ejecting member, after the movable mold and the fixed mold are separated, the movable pipe is communicated with the air pump, so that the surfaces of the movable mold and the fixed mold can be blown, making the release agent on their surfaces dry quickly, and avoiding the generation of bubbles on the surface of the die-cast part due to the residue of the release agent.

Description

Technical Field

[0001] The present invention relates to the technical field of die casting, and particularly to a die casting mold for a steering housing capable of eliminating air holes. Background Art

[0002] In the die casting process, the manufacturing of the steering housing has extremely high requirements for precision and internal quality. In the traditional die casting mold, during the die casting process, since a large amount of gas is generated when the molten aluminum is injected into the mold cavity, if these gases cannot be discharged in time, air holes often form inside the die-cast part, affecting the mechanical properties and appearance quality of the product. The existence of air holes not only reduces the strength of the die-cast part, but may also cause cracks or even fractures during its use, thus seriously affecting the reliability and service life of the product.

[0003] At present, in order to eliminate the air holes in the die-cast part, the industry has tried various methods. For example, by opening exhaust grooves on the surface of the mold cavity to allow the gas to be discharged smoothly during the die casting process. However, this method often has poor effects under high die casting pressure, and the gas is likely to stay in the fine gaps of the mold and is difficult to be completely discharged. In addition, vacuum die casting technology is also adopted, where the mold cavity is evacuated before die casting to reduce the gas content in the cavity. However, vacuum die casting technology requires additional vacuum equipment and complex operation processes, which not only increase the production cost but may also affect the die casting efficiency. Therefore, we propose a die casting mold for a steering housing capable of eliminating air holes. Summary of the Invention

[0004] One technical problem to be solved by the present application is: how to eliminate the air holes on the die-cast part during the die casting process.

[0005] To solve the above technical problem, the embodiment of the present application provides a die casting mold for a steering housing capable of eliminating air holes, including a base, a workbench, a work box, a mold closing member, and an injection member. The workbench is arranged on the base, the work box is arranged on the workbench, the mold closing member is arranged on the work box, and the injection member is arranged on the workbench;

[0006] It further includes:

[0007] A movable seat, which is slidably arranged on the workbench, and a movable mold is movably arranged on the movable seat;

[0008] A fixed seat, which is fixedly arranged on the workbench, and a fixed mold is arranged on the fixed seat;

[0009] A movable air outlet member, which is arranged on the fixed seat and the movable seat, and is arranged on both sides of the movable mold and the fixed mold;

[0010] An ejector member, which is slidably arranged on the movable seat, and the ejector member pushes the movable air outlet member while pushing the material.

[0011] A movable plate, which is slidably arranged on the workbench;

[0012] A linkage mechanism, which is arranged in the fixed seat and drives the movable air outlet member through the cooperation of the movable plate and the linkage mechanism;

[0013] A triggering mechanism, which is arranged on the workbench;

[0014] An air suction mechanism, which is arranged on the fixed seat and connected to the fixed mold, and sucks the gas between the fixed mold and the movable mold through the triggering mechanism during injection molding.

[0015] In some embodiments, the movable air outlet member includes a movable pipe, on which a second connecting column is arranged. The movable pipe is slidably arranged on both sides of the fixed seat and the movable seat through the second connecting column. Fixed pipes are arranged on the fixed seat and the movable seat, and the fixed pipes are sleeved on the movable pipe. An air outlet is formed on the movable pipe, and an air inlet is formed on the movable pipe. A connecting port is formed on the fixed pipe, and an air pump is arranged on the base and connected to the connecting port.

[0016] In some embodiments, the ejector member includes a pressure receiving plate, on which a plurality of first return springs are arranged. An avoidance hole is formed on the pressure receiving plate, and the pressure receiving plate is arranged on the movable seat through the first return springs. A first connecting column is arranged on the pressure receiving plate, and the pressure receiving plate is slidably arranged on the movable seat through the first connecting column. An extrusion plate is arranged on the pressure receiving plate through the first connecting column, and the extrusion plate is arranged in the movable seat. A plurality of extrusion columns are arranged on the extrusion plate, and the extrusion columns penetrate through the movable seat and the movable mold at the same time. The second connecting column is arranged on the pressure receiving plate.

[0017] In some embodiments, the linkage mechanism includes a bidirectional lead screw, which is rotatably arranged in the fixed mold through penetration. Sliders are slidably arranged at both ends of the bidirectional lead screw through threads. A first connecting rod is rotatably arranged on the slider, and the first connecting rod is rotatably arranged on the second connecting column. The bidirectional lead screw penetrates through the workbench and then a first gear is arranged. The lower surface of the workbench is slidably provided with a movable plate, and racks are arranged on both sides of the movable plate. The racks are engaged with the first gear. A trigger plate is arranged on the movable plate, and a second return spring is arranged between the movable plate and the workbench.

[0018] In some embodiments, the triggering mechanism includes a first cross bar which is rotatably arranged on the workbench. A second gear is arranged on the first cross bar. A sleeve is sleeved on the injection member. Annular tooth protrusions are arranged on the sleeve. The sleeve meshes with the second gear. A mounting seat is arranged on the fixed seat. A worm is rotatably arranged on the mounting seat. Sprockets are arranged on both the worm and the first cross bar. A chain is arranged between the worm and the first cross bar through the sprockets. A second cross bar is arranged on the mounting seat. A worm gear is arranged on the second cross bar. The worm gear meshes with the worm.

[0019] In some embodiments, the air suction mechanism includes an installation cylinder which is arranged on the fixed seat. A piston is slidably arranged in the installation cylinder. A mounting wheel is fixedly arranged on the second cross bar. A second connecting rod is arranged between the non - central position of the mounting wheel and the piston. Two ends of the second connecting rod are respectively rotatably connected to the piston and the mounting wheel. A connecting pipe is arranged on the installation cylinder.

[0020] In some embodiments, a sliding rod is arranged between the work box and the fixed seat. The movable seat is slidably arranged on the workbench through the sliding rod. Both the pressure receiving plate and the extrusion plate are slidably arranged on the movable seat.

[0021] In some embodiments, an injection pipe is arranged on the workbench. The injection pipe is sleeved on the output end of the injection member. A distance is left between the injection pipe and the injection member.

[0022] In some embodiments, the trigger plate is slidably arranged on the workbench. The movable seat can be pressed against the trigger plate.

[0023] In some embodiments, an exhaust port is opened on the fixed mold. A feed port is opened on the connecting pipe and the exhaust port. The feed port is connected to the injection pipe.

[0024] The present invention has at least the following beneficial effects:

[0025] 1. Different from the prior art, in the actual use process, through the cooperation of the set triggering mechanism and the air suction mechanism, the gas in the mold cavity can be sucked during the die - casting process, thereby avoiding the generation of pores inside the die - castings.

[0026] 2. Different from the prior art, in the actual use process, through the cooperation of the set linkage mechanism and the movable plate and the setting of the ejecting member, after the movable mold and the fixed mold are separated, the movable pipe is communicated with the air pump, so that the surfaces of the movable mold and the fixed mold can be blown, and the release agent on their surfaces can be quickly dried, avoiding the generation of bubbles on the surface of the die - castings due to the residue of the release agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 Schematic diagram of the connection structure of the workbench of the present invention;

[0029] Figure 3 Schematic diagram of the structure of the movable seat of the present invention;

[0030] Figure 4 Schematic diagram of the partial cross-section of the movable seat of the present invention;

[0031] Figure 5 Schematic diagram of the structure of the ejector of the present invention;

[0032] Figure 6 Schematic diagram of the disassembled structure of the movable air outlet part of the present invention;

[0033] Figure 7 For the present invention Figure 2 Schematic diagram of the structure from another perspective;

[0034] Figure 8 Schematic diagram of the partial cross-section of the fixed seat of the present invention;

[0035] Figure 9 Schematic diagram of the structure of the movable plate of the present invention;

[0036] Figure 10 Schematic diagram of the structure of the trigger mechanism of the present invention;

[0037] Figure 11 For the present invention Figure 10 Enlarged schematic diagram of part A in the present invention;

[0038] Figure 12 For the present invention Figure 10 Enlarged schematic diagram of part B in the present invention;

[0039] Figure 13 Schematic diagram of the partial cross-section of the mounting seat of the present invention;

[0040] Figure 14 Schematic diagram of the partial cross-section of the fixed mold of the present invention;

[0041] Figure 15 Schematic diagram of the partial cross-section of the moving mold of the present invention.

[0042] In the figure: 1, base; 2, workbench; 3, work box; 31, sliding rod; 4, fixed seat; 5, movable seat; 6, ejecting member; 61, pressure receiving plate; 611, avoidance hole; 62, extrusion plate; 621, extrusion column; 63, connecting column I; 64, first return spring; 7, movable air outlet member; 71, movable pipe; 711, connecting column II; 712, air inlet; 713, air outlet; 72, fixed pipe; 721, connection port; 8, movable plate; 81, trigger plate; 82, rack; 83, second return spring; 9, linkage mechanism; 91, bidirectional lead screw; 911, first gear; 92, slider; 921, first connecting rod; 10, trigger mechanism; 101, first cross bar; 1011, second gear; 102, sleeve; 103, chain; 1031, sprocket; 104, mounting seat; 105, worm; 106, second cross bar; 1061, worm gear; 11, air suction mechanism; 111, mounting cylinder; 112, piston; 1121, second connecting rod; 113, mounting wheel; 114, connecting pipe; 12, injection member; 121, injection pipe; 13, mold clamping member; 14, air pump; 15, moving mold; 16, fixed mold; 161, exhaust port; 162, feeding port. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1 - 15 , the present invention provides a technical solution: a die-casting mold for a steering housing capable of eliminating air holes, including a base 1, a workbench 2, a work box 3, a mold clamping member 13 and an injection member 12. The workbench 2 is arranged on the base 1, the work box 3 is arranged on the workbench 2, the mold clamping member 13 is arranged on the work box 3, and the injection member 12 is arranged on the workbench 2;

[0045] It further includes:

[0046] A movable seat 5, which is slidably arranged on the workbench 2, and a moving mold 15 is movably arranged on the movable seat 5;

[0047] A fixed seat 4, which is fixedly arranged on the workbench 2, and a fixed mold 16 is arranged on the fixed seat 4;

[0048] A movable air outlet member 7, which is arranged on the fixed seat 4 and the movable seat 5, and is arranged on both sides of the moving mold 15 and the fixed mold 16;

[0049] The ejector 6 is slidably arranged on the movable seat 5, and the ejector 6 pushes the movable air outlet member 7 while pushing the material;

[0050] The movable plate 8 is slidably arranged on the workbench 2;

[0051] The linkage mechanism 9 is arranged in the fixed seat 4, and the movable air outlet member 7 is pushed by the cooperation of the movable plate 8 and the linkage mechanism 9;

[0052] The trigger mechanism 10 is arranged on the workbench 2;

[0053] The air suction mechanism 11 is arranged on the fixed seat 4 and connected to the fixed mold 16. During injection molding, the air suction mechanism 11 sucks the gas between the fixed mold 16 and the movable mold 15 through the trigger mechanism 10.

[0054] Please refer to Figure 6 , the movable air outlet member 7 includes a movable pipe 71. A connecting column II 711 is arranged on the movable pipe 71. The movable pipe 71 is slidably arranged on both sides of the fixed seat 4 and the movable seat 5 through the connecting column II 711. Fixed pipes 72 are arranged on the fixed seat 4 and the movable seat 5. The fixed pipes 72 are sleeved on the movable pipe 71. An air outlet 713 is formed on the movable pipe 71, and an air inlet 712 is formed on the movable pipe 71. A connection port 721 is formed on the fixed pipe 72. An air pump 14 is arranged on the base 1, and the air pump 14 is connected to the connection port 721. When the movable pipe 71 shrinks into the fixed pipe 72, the air inlet 712 and the connection port 721 are staggered.

[0055] Please refer to Figures 3 - 5 and Figure 15 , the ejector 6 includes a pressure receiving plate 61. A plurality of first return springs 64 are arranged on the pressure receiving plate 61. An avoidance hole 611 is formed on the pressure receiving plate 61. The pressure receiving plate 61 is arranged on the movable seat 5 through the first return springs 64. A connecting column I 63 is arranged on the pressure receiving plate 61. The pressure receiving plate 61 is slidably arranged on the movable seat 5 through the connecting column I 63. An extrusion plate 62 is arranged on the pressure receiving plate 61 through the connecting column I 63. The extrusion plate 62 is arranged in the movable seat 5. A plurality of extrusion columns 621 are arranged on the extrusion plate 62. The extrusion columns 621 penetrate through the movable seat 5 and at the same time penetrate through the movable mold 15. The connecting column II 711 is arranged on the pressure receiving plate 61. Through the arranged first return springs 64, after the pressure receiving plate 61 is separated from the work box 3, the extrusion columns 621 can retract into the movable mold 15 immediately. At the same time, the connecting column 711 arranged on the extrusion plate 62 can drive the movable pipe 71 to move backward along with the fixed pipe 72, and then shrink into the fixed pipe 72. Through the arranged avoidance hole 611, the pressure receiving plate 61 and the mold closing member 13 do not interfere with each other.

[0056] Please refer to Figures 7 - 9, the linkage mechanism 9 includes a bidirectional lead screw 91. The bidirectional lead screw 91 is rotatably arranged through the fixed mold 16. Sliders 92 are slidably arranged at both ends of the bidirectional lead screw 91 through threads. A first connecting rod 921 is rotatably arranged on the slider 92. The first connecting rod 921 is rotatably arranged on the second connecting column 711. The bidirectional lead screw 91 is arranged through the workbench 2 and then is provided with a first gear 911. An active plate 8 is slidably arranged on the lower surface of the workbench 2. Rack bars 82 are arranged on both sides of the active plate 8. The rack bars 82 are meshed with the first gear 911. A trigger plate 81 is arranged on the active plate 8. A second return spring 83 is arranged between the active plate 8 and the workbench 2. During the mold closing process, the movable seat 5 pushes the trigger plate 81, causing the active plate 8 to move on the workbench 2, and then the rack bars 82 drive the bidirectional lead screw 91 to rotate through the first gear 911, and the sliders 92 move towards both sides, thereby driving the movable tube 71 to contract in the fixed tube 72.

[0057] Please refer to Figures 10 - 13 , the trigger mechanism 10 includes a first cross bar 101. The first cross bar 101 is rotatably arranged on the workbench 2. A second gear 1011 is arranged on the first cross bar 101. A sleeve 102 is sleeved on the injection member 12. Annular tooth protrusions are provided on the sleeve 102. The sleeve 102 is meshed with the second gear 1011. A mounting seat 104 is arranged on the fixed seat 4. A worm 105 is rotatably arranged on the mounting seat 104. Chain wheels 1031 are arranged on both the worm 105 and the first cross bar 101. A chain 103 is arranged between the worm 105 and the first cross bar 101 through the chain wheels 1031. A second cross bar 106 is arranged on the mounting seat 104. A worm gear 1061 is arranged on the second cross bar 106. The worm gear 1061 is meshed with the worm 105. Due to the self-locking characteristic between the worm 105 and the worm gear 1061, the reverse transmission of the second cross bar 106 is restricted. By providing annular tooth protrusions on the sleeve 102, during the injection process of the injection member 12, the sleeve 102 drives the second gear 1011 to rotate, and the rotation angle of the second gear 1011 can be controlled by the length of the sleeve 102, thereby restricting the rotation angle of the mounting wheel 113.

[0058] Please refer to Figure 12, the air intake mechanism 11 includes an installation cylinder 111. The installation cylinder 111 is arranged on the fixed seat 4. A piston 112 is slidably arranged in the installation cylinder 111. An installation wheel 113 is fixedly arranged on the cross bar two 106. A connecting rod two 1121 is arranged between a non - center position of the installation wheel 113 and the piston 112. Two ends of the connecting rod two 1121 are respectively rotatably connected to the piston 112 and the installation wheel 113. A connecting pipe 114 is arranged on the installation cylinder 111. During the injection process, the sleeve 102 at the output end of the injection part 12 makes the cross bar one 101 rotate through the gear two 1011, and then makes the worm 105 rotate through the chain 103, and makes the worm wheel 1061 drive the installation wheel 113 by a certain angle through the worm 105, and makes the piston 112 descend through the connecting rod two 1121, sucking the gas between the moving mold 15 and the fixed mold 16 into the installation cylinder 111, generating a negative pressure between the moving mold 15 and the fixed mold 16, so as to avoid air bubbles remaining in the die - casting during molding.

[0059] Please refer to Figure 2 , a slide bar 31 is arranged between the working box 3 and the fixed seat 4. The movable seat 5 is slidably arranged on the workbench 2 through the slide bar 31. Both the pressure receiving plate 61 and the extrusion plate 62 are slidably arranged on the movable seat 5.

[0060] Please refer to Figures 10 - 11 , an injection pipe 121 is arranged on the workbench 2. The injection pipe 121 is sleeved on the output end of the injection part 12. A distance is left between the injection pipe 121 and the injection part 12 to facilitate the connection between the gear two 1011 and the sleeve 102.

[0061] Please refer to Figure 2 , a trigger plate 81 is slidably arranged on the workbench 2. The movable seat 5 can be extruded with the trigger plate 81.

[0062] Please refer to Figure 14 , an exhaust port 161 is opened on the fixed mold 16. The connecting pipe 114 is connected to the exhaust port 161. A feed port 162 is opened on the fixed mold 16. The feed port 162 is connected to the injection pipe 121.

[0063] The working process of the present invention is as follows:

[0064] In use, by starting the mold clamping member 13, the movable seat 5 is pushed towards the fixed seat 4, causing the moving mold 15 and the fixed mold 16 to be clamped. During the mold clamping process, the movable seat 5 pushes the trigger plate 81, causing the movable plate 8 to move on the workbench 2, and then the rack 82 drives the bidirectional lead screw 91 to rotate through the first gear 911, and the slider 92 moves towards both sides, thereby driving the movable tube 71 to contract in the fixed tube 72. At this time, the air inlet 712 is offset from the connection port 721, and thus the gas in the air pump 14 is blocked. When the mold clamping is completed, by pouring molten aluminum into the injection tube 121 and starting the injection member 12, the molten aluminum in the injection tube 121 is injected between the moving mold 15 and the fixed mold 16. During the injection process of the injection member 12, the sleeve 102 at the output end of the injection member 12 causes the first cross bar 101 to rotate through the second gear 1011, and then the worm 105 rotates through the chain 103, and the worm 105 causes the worm gear 1061 to drive the mounting wheel 113 by a certain angle, and the piston 112 is lowered through the second connecting rod 1121, sucking the gas between the moving mold 15 and the fixed mold 16 into the mounting cylinder 111, generating a negative pressure between the moving mold 15 and the fixed mold 16, thereby preventing air bubbles from remaining in the die casting when it is formed;

[0065] When the molten aluminum between the moving mold 15 and the fixed mold 16 solidifies, by resetting the mold clamping member 13, the moving mold 15 and the fixed mold 16 are separated. As the moving mold 15 and the fixed mold 16 are separated, the trigger plate 81 loses the extrusion pressure and then resets, thereby causing the movable tube 71 on the fixed seat 4 to be ejected again. When the pressure receiving plate 61 is squeezed by the work box 3, the extrusion column 621 ejects the surface of the moving mold 15, thereby separating the die casting from the moving mold 15. During the process of the pressure receiving plate 61 being pressed, the movable tube 71 on the extrusion plate 62 is ejected. Subsequently, before the next die casting, by spraying a release agent on the surfaces of the moving mold 15 and the fixed mold 16 and starting the air pump 14, it is quickly dried through the air outlet 713, thereby preventing the remaining release agent from causing pores on the surface of the die casting.

[0066] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0067] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A die-casting mold for a steering housing capable of eliminating pores, comprising a base (1), a workbench (2), a work box (3), a mold clamping part (13) and an injection part (12), characterized in that: The workbench (2) is arranged on the base (1), the workbox (3) is arranged on the workbench (2), the mold clamping part (13) is arranged on the workbox (3), and the injection part (12) is arranged on the workbench (2); Also included are: A movable seat (5), the movable seat (5) being slidably arranged on the workbench (2), and a movable mold (15) being movably arranged on the movable seat (5); A fixed seat (4), the fixed seat (4) being fixedly arranged on the workbench (2), and a fixed mold (16) being arranged on the fixed seat (4); A movable air outlet member (7), wherein the movable air outlet member (7) is arranged on the fixed seat (4) and the movable seat (5), and the movable air outlet member (7) is arranged on both sides of the movable mold (15) and the fixed mold (16); An ejector (6), wherein the ejector (6) is slidably disposed on the movable seat (5), and the ejector (6) pushes the movable air outlet member (7) while pushing the material; A movable plate (8), wherein the movable plate (8) is slidably arranged on the workbench (2); A linkage mechanism (9), wherein the linkage mechanism (9) is arranged in the fixed seat (4), and the movable air outlet member (7) is pushed by the movable plate (8) in cooperation with the linkage mechanism (9); A trigger mechanism (10), wherein the trigger mechanism (10) is arranged on a workbench (2); An air suction mechanism (11) is arranged on a fixed seat (4) and connected to a fixed mold (16). During injection, a trigger mechanism (10) is used to cause the air suction mechanism (11) to suck gas between the fixed mold (16) and the movable mold (15).

2. The die-casting mold for a steering housing capable of eliminating pores according to claim 1, characterized in that: The movable air outlet member (7) comprises a movable tube (71), the movable tube (71) is provided with a second connecting column (711), the movable tube (71) is slidably arranged on both sides of a fixed seat (4) and a movable seat (5) through the second connecting column (711), the fixed seat (4) and the movable seat (5) are provided with a fixed tube (72), the fixed tube (72) is sleeved on the movable tube (71), the movable tube (71) is provided with an air outlet (713), the movable tube (71) is provided with an air inlet (712), the fixed tube (72) is provided with a connecting port (721), and the base (1) is provided with an air pump (14), and the air pump (14) is connected to the connecting port (721).

3. The die-casting mold for a steering housing capable of eliminating pores according to claim 2, characterized in that: The ejector (6) comprises a pressure plate (61), a plurality of return springs (64) are arranged on the pressure plate (61), an avoidance hole (611) is opened on the pressure plate (61), the pressure plate (61) is arranged on the movable seat (5) through the return spring (64), a connecting column (63) is arranged on the pressure plate (61), the pressure plate (61) is slidably arranged on the movable seat (5) through the connecting column (63), the pressure plate (61) is provided with an extrusion plate (62) through the connecting column (63), the extrusion plate (62) is arranged in the movable seat (5), a plurality of extrusion columns (621) are arranged on the extrusion plate (62), the extrusion columns (621) penetrate the movable seat (5) and the movable mold (15) at the same time, and the connecting column (711) is arranged on the pressure plate (61).

4. The die-casting mold for a steering housing capable of eliminating pores according to claim 3, characterized in that: The linkage mechanism (9) comprises a bidirectional screw rod (91), the bidirectional screw rod (91) is rotatably arranged in a fixed mold (16), two ends of the bidirectional screw rod (91) are slidably arranged with sliders (92) through threads, a connecting rod 1 (921) is rotatably arranged on the slider (92), the connecting rod 1 (921) is rotatably arranged on a connecting column 2 (711), the bidirectional screw rod (91) is rotatably arranged after passing through the workbench (2), a gear 1 (911) is slidably arranged on the lower surface of the workbench (2), racks (82) are arranged on both sides of the movable plate (8), the racks (82) are meshed with the gear 1 (911), a trigger plate (81) is arranged on the movable plate (8), and a reset spring 2 (83) is arranged between the movable plate (8) and the workbench (2).

5. The die-casting mold for a steering housing capable of eliminating pores according to claim 4, characterized in that: The trigger mechanism (10) comprises a crossbar (101), the crossbar (101) being rotatably arranged on a workbench (2), a gear (1011) being arranged on the crossbar (101), a sleeve (102) being sleeved on the injection piece (12), a ring-shaped tooth protrusion being provided on the sleeve (102), the sleeve (102) being meshed with the gear (1011), a mounting seat (104) being arranged on the fixing seat (4), the mounting seat (104) being A worm (105) is rotatably arranged on the first crossbar (104), a sprocket (1031) is arranged on the worm (105) and the first crossbar (101), a chain (103) is arranged between the worm (105) and the first crossbar (101) via the sprocket (1031), a second crossbar (106) is arranged on the mounting seat (104), a worm wheel (1061) is arranged on the second crossbar (106), and the worm wheel (1061) is meshed with the worm (105).

6. The die-casting mold for a steering housing capable of eliminating pores according to claim 5, characterized in that: The air suction mechanism (11) comprises a mounting cylinder (111), wherein the mounting cylinder (111) is arranged on a fixed seat (4), a piston (112) is slidably arranged in the mounting cylinder (111), a mounting wheel (113) is fixedly arranged on the second cross bar (106), a second connecting rod (1121) is arranged between a non-center position of the mounting wheel (113) and the piston (112), two ends of the second connecting rod (1121) are rotatably connected to the piston (112) and the mounting wheel (113) respectively, and a connecting pipe (114) is arranged on the mounting cylinder (111).

7. The die-casting mold for a steering housing capable of eliminating air holes according to claim 6, characterized in that: A sliding rod (31) is provided between the working box (3) and the fixed seat (4); the movable seat (5) is slidably arranged on the working table (2) via the sliding rod (31); and the pressure plate (61) and the extrusion plate (62) are both slidably arranged on the movable seat (5).

8. The die-casting mold for a steering housing capable of eliminating air holes according to claim 7, characterized in that: The workbench (2) is provided with an injection tube (121), the injection tube (121) is sleeved on the output end of the injection piece (12), and a distance is left between the injection tube (121) and the injection piece (12).

9. The die-casting mold for a steering housing capable of eliminating air holes according to claim 8, characterized in that: The trigger plate (81) is slidably arranged on the workbench (2), and the movable seat (5) can be pressed against the trigger plate (81).

10. The die-casting mold for a steering housing capable of eliminating air holes according to claim 9, characterized in that: The fixed mold (16) is provided with an exhaust port (161), and the connecting pipe (114) is connected to the exhaust port (161). The fixed mold (16) is provided with a feed port (162), and the feed port (162) is connected to the injection tube (121).

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