Steering shell die-casting die capable of eliminating air holes

Abstract

The invention relates to the technical field of die-casting, in particular to a steering shell die-casting die capable of eliminating air holes, which comprises a base, a working table, a working box, a die assembly part and an injection part, the working table is arranged on the base, the working box is arranged on the working table, the die assembly part is arranged on the working box, and the injection part is arranged on the working table; according to the steering shell die-casting die capable of eliminating the air holes, air in a die cavity can be sucked in the die-casting process through cooperation of the arranged triggering mechanism and the air suction mechanism, and therefore the air holes are prevented from being generated in a die-casting piece; and through cooperation of a linkage mechanism and a movable plate and arrangement of an ejection piece, after the movable mold and the fixed mold are separated, a movable pipe communicates with an air pump, so that air can be blown to the surfaces of the movable mold and the fixed mold, a release agent on the surfaces of the movable mold and the fixed mold is rapidly dried, and bubbles generated on the surfaces of the die castings due to residues of the release agent are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of die casting, in particular to a die casting mould 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 die-casting process of traditional die-casting molds, a large amount of gas will be generated when the aluminum liquid is injected into the mold cavity. If these gases are not discharged in time, pores will often form inside the die-casting, affecting the mechanical properties and appearance quality of the product. The presence of pores will not only reduce the strength of the die-casting, but may also cause cracks or even breakage during use, thereby seriously affecting the reliability and service life of the product.

[0003] At present, in order to eliminate pores in die-casting parts, the industry has tried many methods. For example, by opening exhaust grooves on the surface of the mold cavity, the gas can be discharged smoothly during the die-casting process. However, this method often does not work well under the high pressure of die-casting. The gas is easily retained in the small gaps of the mold and is difficult to be completely discharged. In addition, vacuum die-casting technology is also used to vacuum the mold cavity before die-casting to reduce the gas content in the cavity. However, vacuum die-casting technology requires additional vacuum equipment and complex operating procedures, which not only increases production costs, but may also affect die-casting efficiency. For this reason, we propose a steering housing die-casting mold that can eliminate pores. Summary of the invention

[0004] A technical problem to be solved by the present application is: how to eliminate pores on die-casting parts during the die-casting process.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a steering housing die-casting mold capable of eliminating air holes, comprising a base, a workbench, a workbox, a clamping piece and a shot piece, wherein the workbench is arranged on the base, the workbox is arranged on the workbench, the clamping piece is arranged on the workbox, and the shot piece is arranged on the workbench;

[0006] Also included are:

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

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

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

[0010] An ejector, wherein the ejector is slidably disposed on a movable seat, and the ejector pushes the movable air outlet member while pushing the material;

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

[0012] A linkage mechanism, which is arranged in the fixed seat, and the movable air outlet member is pushed by the movable plate in cooperation with the linkage mechanism;

[0013] A trigger mechanism, wherein the trigger mechanism is arranged on a workbench;

[0014] The suction mechanism is arranged on the fixed seat and connected to the fixed mold. During injection, the suction mechanism is triggered to suck the gas between the fixed mold and the movable mold.

[0015] In some embodiments, the movable air outlet component includes a movable tube, a connecting column 2 is provided on the movable tube, the movable tube is slidably arranged on both sides of the fixed seat and the movable seat through the connecting column 2, a fixed tube is provided on the fixed seat and the movable seat, the fixed tube is sleeved on the movable tube, an air outlet is provided on the movable tube, an air inlet is provided on the movable tube, a connecting port is provided on the fixed tube, an air pump is provided on the base, and the air pump is connected to the connecting port.

[0016] In some embodiments, the ejector includes a pressure plate, a plurality of return springs are arranged on the pressure plate, an avoidance hole is opened on the pressure plate, the pressure plate is arranged on the movable seat through the return spring, a connecting column is arranged on the pressure plate, the pressure plate is slidably arranged on the movable seat through the connecting column, the pressure plate is provided with an extrusion plate through the connecting column, the extrusion plate is arranged in the movable seat, a plurality of extrusion columns are arranged on the extrusion plate, the extrusion columns penetrate the movable seat and the movable mold at the same time, and the connecting column 2 is arranged on the pressure plate.

[0017] In some embodiments, the linkage mechanism includes a bidirectional screw rod, which is rotatably arranged in a fixed mold, and sliders are arranged at both ends of the bidirectional screw rod through threaded sliding. A connecting rod 1 is rotatably arranged on the slider, and the connecting rod 1 is rotatably arranged on a connecting column 2. After the bidirectional screw rod passes through the workbench, a gear 1 is arranged, and a movable plate is slidably arranged on the lower surface of the workbench, racks are arranged on both sides of the movable plate, and the racks are meshed with gear 1. A trigger plate is arranged on the movable plate, and a reset spring 2 is arranged between the movable plate and the workbench.

[0018] In some embodiments, the trigger mechanism includes a cross bar 1, which is rotatably set on the workbench, a gear 2 is arranged on the cross bar 1, a sleeve is sleeved on the injection piece, a ring-shaped tooth protrusion is opened on the sleeve, the sleeve is meshed with gear 2, a mounting seat is arranged on the fixed seat, a worm is rotatably set on the mounting seat, sprockets are arranged on the worm and cross bar 1, a chain is arranged between the worm and cross bar 1 through the sprocket, a cross bar 2 is arranged on the mounting seat, a worm wheel is arranged on the cross bar 2, and the worm wheel is meshed with the worm.

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

[0020] In some embodiments, a sliding rod is provided between the working box and the fixed seat, the movable seat is slidably provided on the working table through the sliding rod, and the pressure plate and the extrusion plate are both slidably provided on the movable seat.

[0021] In some embodiments, a shot tube is disposed on the workbench, and the shot tube is sleeved on the output end of the shot component, and a distance is left between the shot tube and the shot component.

[0022] In some embodiments, the trigger plate is slidably disposed on a workbench, and the movable seat can be squeezed with the trigger plate.

[0023] In some embodiments, an exhaust port is provided on the fixed mold, a feed port is provided on the connecting pipe and the exhaust port, and the feed port is connected to the injection tube.

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

[0025] 1. Different from the prior art, in actual use, the trigger mechanism and the suction mechanism are used to extract the gas in the mold cavity during the die-casting process, thereby avoiding the formation of pores inside the die-casting.

[0026] 2. Different from the prior art, in actual use, through the coordination of the linkage mechanism and the movable plate and the setting of the ejector, after the movable mold and the fixed mold are separated, the movable tube is connected with the air pump, so that air can be blown on the surfaces of the movable mold and the fixed mold to quickly dry the release agent on their surfaces, thereby avoiding the residual release agent causing bubbles on the surface of the die-casting. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Figure 2 This is a schematic diagram of the connection structure of the workbench of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the movable seat of the present invention;

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of the movable seat of the present invention;

[0031] Figure 5 It is a schematic diagram of the ejector structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the split structure of the movable air outlet member of the present invention;

[0033] Figure 7 For the present invention Figure 2 Another perspective structural diagram;

[0034] Figure 8 This is a schematic diagram of the cross-sectional structure of the fixed seat of the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure of the movable plate of the present invention;

[0036] Fig.10 It is a schematic diagram of the structure of the trigger mechanism of the present invention;

[0037] Fig.11 For the present invention Fig.10 The enlarged structural diagram at A in the middle;

[0038] Fig.12 For the present invention Fig.10 The enlarged structural diagram at B in the middle;

[0039] Fig.13 This is a schematic diagram of the cross-sectional structure of the installation seat of the present invention;

[0040] Fig.14 This is a schematic diagram of the fixed mold section structure of the present invention;

[0041] Fig.15 It is a schematic diagram of the cross-sectional structure of the movable mold of the present invention.

[0042] In the figure: 1, base; 2, workbench; 3, work box; 31, slide bar; 4, fixed seat; 5, movable seat; 6, ejector; 61, pressure plate; 611, avoidance hole; 62, extrusion plate; 621, extrusion column; 63, connecting column 1; 64, reset spring 1; 7, movable air outlet; 71, movable pipe; 711, connecting column 2; 712, air inlet; 713, air outlet; 72, fixed pipe; 721, connecting port; 8, movable plate; 81, trigger plate; 82, rack; 83, reset spring 2; 9, linkage mechanism; 91, two-way screw rod; 911, gear 1 ; 92, slider; 921, connecting rod one; 10, trigger mechanism; 101, cross bar one; 1011, gear two; 102, sleeve; 103, chain; 1031, sprocket; 104, mounting seat; 105, worm; 106, cross bar two; 1061, worm wheel; 11, suction mechanism; 111, mounting cylinder; 112, piston; 1121, connecting rod two; 113, mounting wheel; 114, connecting pipe; 12, injection part; 121, injection pipe; 13, mold clamping part; 14, air pump; 15, movable mold; 16, fixed mold; 161, exhaust port; 162, feed port. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1-15 The present invention provides a technical solution: a die-casting mold for a steering housing capable of eliminating pores, comprising a base 1, a workbench 2, a workbox 3, a clamping piece 13 and a shot piece 12, wherein the workbench 2 is arranged on the base 1, the workbox 3 is arranged on the workbench 2, the clamping piece 13 is arranged on the workbox 3, and the shot piece 12 is arranged on the workbench 2;

[0045] Also included are:

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

[0047] A fixed seat 4, the fixed seat 4 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 movable 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] A movable plate 8, 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 plate 8 cooperates with the linkage mechanism 9 to push the movable air outlet member 7;

[0052] A trigger mechanism 10, wherein the trigger mechanism 10 is disposed on the workbench 2;

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

[0054] See also Figure 6 The movable air outlet member 7 includes a movable tube 71, a second connecting column 711 is provided on the movable tube 71, the movable tube 71 is slidably arranged on both sides of the fixed seat 4 and the 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, an air outlet 713 is provided on the movable tube 71, an air inlet 712 is provided on the movable tube 71, a connecting port 721 is provided on the fixed tube 72, an air pump 14 is provided on the base 1, and the air pump 14 is connected to the connecting port 721. When the movable tube 71 is contracted in the fixed tube 72, the air inlet 712 and the connecting port 721 are staggered.

[0055] See also Figure 3-5 and Fig.15 The ejector 6 includes a pressure plate 61, a plurality of return springs 64 are arranged on the pressure plate 61, a 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, and a plurality of extrusion columns 62 are arranged on the extrusion plate 62 1, the extrusion column 621 penetrates the movable seat 5 and the movable mold 15 at the same time, and the connecting column 2 711 is arranged on the pressure plate 61. The reset spring 1 64 is arranged so that the extrusion column 621 can be retracted back to the movable mold 15 immediately after the pressure plate 61 is separated from the working box 3. At the same time, the connecting column 711 arranged on the extrusion plate 62 can drive the movable tube 71 to move backward following the fixed tube 72, and then retract in the fixed tube 72. The avoidance hole 611 is arranged so that the pressure plate 61 and the clamping part 13 do not interfere with each other.

[0056] See also Figure 7-9The linkage mechanism 9 includes a bidirectional screw rod 91, which is rotatably arranged in the fixed mold 16. Slide blocks 92 are slidably arranged at both ends of the bidirectional screw rod 91 through threads. A connecting rod 921 is rotatably arranged on the slide block 92. The connecting rod 921 is rotatably arranged on the connecting column 711. After the bidirectional screw rod 91 passes through the workbench 2, a gear 911 is arranged. A movable plate 8 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 911. A trigger plate 81 is arranged on the movable plate 8. A reset spring 83 is arranged between the movable plate 8 and the workbench 2. During the mold closing process, the movable seat 5 pushes the trigger plate 81, so that the movable plate 8 is pushed to move on the workbench 2, so that the rack 82 drives the bidirectional screw rod 91 to rotate through the gear 911, and the slide block 92 moves to both sides, thereby driving the movable tube 71 to shrink in the fixed tube 72.

[0057] See also Figure 10-13 The trigger mechanism 10 includes a crossbar 101, which is rotatably arranged on the workbench 2, and a gear 1011 is arranged on the crossbar 101. A sleeve 102 is sleeved on the injection piece 12, and an annular tooth protrusion is provided on the sleeve 102. The sleeve 102 is meshed with the gear 1011. A mounting seat 104 is provided on the fixed seat 4, and a worm 105 is rotatably arranged on the mounting seat 104. A sprocket 1031 is provided on the worm 105 and the crossbar 101, and a chain 103 is provided between the worm 105 and the crossbar 101 through the sprocket 1031. A second crossbar 106 is provided on the mounting seat 104, and a worm wheel 1061 is provided on the second crossbar 106. The worm wheel 1061 is meshed with the worm 105. The self-locking property between the worm 105 and the worm wheel 1061 limits the reverse transmission of the second crossbar 106. By providing an annular tooth protrusion on the sleeve 102, the sleeve 102 drives the second gear 1011 to rotate during the injection process of the injection piece 12, and the number of rotations of the second gear 1011 can be controlled by the length of the sleeve 102, thereby limiting the rotation angle of the mounting wheel 113.

[0058] See also Fig.12The suction mechanism 11 includes a mounting cylinder 111, which is arranged on the fixed seat 4, a piston 112 is slidably arranged in the mounting cylinder 111, a mounting wheel 113 is fixedly arranged on the second crossbar 106, a second connecting rod 1121 is arranged between the non-center position of the mounting wheel 113 and the piston 112, and the two ends of the second connecting rod 1121 are respectively rotatably connected with the piston 112 and the mounting wheel 113, and a connecting pipe 114 is arranged on the mounting cylinder 111. During the injection process, the injection piece 12 The sleeve 102 at the output end rotates the cross bar 101 through the gear 2 1011, and then rotates the worm 105 through the chain 103, and the worm gear 1061 drives the mounting wheel 113 to a certain angle through the worm 105, and the piston 112 is lowered through the connecting rod 2 1121, and the gas between the movable mold 15 and the fixed mold 16 is sucked into the mounting cylinder 111, so that negative pressure is generated between the movable mold 15 and the fixed mold 16, so as to avoid bubbles in the die casting during molding.

[0059] See also Figure 2 A slide bar 31 is provided between the working box 3 and the fixed seat 4 , the movable seat 5 is slidably provided on the working table 2 through the slide bar 31 , and the pressure plate 61 and the extrusion plate 62 are both slidably provided on the movable seat 5 .

[0060] See also Figure 10-11 A shot tube 121 is provided on the workbench 2 , and the shot tube 121 is sleeved on the output end of the shot piece 12 , and a distance is left between the shot tube 121 and the shot piece 12 , so as to facilitate the connection between the gear 2 1011 and the sleeve 102 .

[0061] See also Figure 2 The trigger plate 81 is slidably disposed on the workbench 2 , and the movable seat 5 can be squeezed with the trigger plate 81 .

[0062] See also Fig.14 The fixed mold 16 is provided with an exhaust port 161 , 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 .

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

[0064] In use, the movable seat 5 is pushed toward the fixed seat 4 by starting the mold clamping member 13, so that the movable mold 15 and the fixed mold 16 are molded together. In the process of mold closing, the movable seat 5 pushes the trigger plate 81, so that the movable plate 8 is pushed to move on the workbench 2, so that the rack 82 drives the bidirectional screw 91 to rotate through the gear 1 911, and the slider 92 moves to both sides, so as to drive the movable tube 71 to shrink in the fixed tube 72. At this time, the air inlet 712 and the connecting port 721 are staggered, so that the gas in the air pump 14 is blocked. When the mold closing is completed, aluminum liquid is poured into the injection tube 121 and the injection member 12 is started. The aluminum liquid in the injection tube 121 is injected into between the movable mold 15 and the fixed mold 16. During the injection process of the injection piece 12, the sleeve 102 at the output end of the injection piece 12 rotates the crossbar 101 through the gear 2 1011, and then the worm 105 is rotated through the chain 103, and the worm 105 drives the worm wheel 1061 to drive the mounting wheel 113 to a certain angle, and the piston 112 is lowered through the connecting rod 2 1121, and the gas between the movable mold 15 and the fixed mold 16 is sucked into the mounting tube 111, so that negative pressure is generated between the movable mold 15 and the fixed mold 16, so as to avoid bubbles remaining in the die casting during molding;

[0065] After the aluminum liquid between the movable mold 15 and the fixed mold 16 is formed and solidified, the movable mold 15 and the fixed mold 16 are separated by resetting the mold clamping part 13. As the movable mold 15 and the fixed mold 16 are separated, the trigger plate 81 loses the extrusion force and is reset, so that the movable tube 71 on the fixed seat 4 is ejected again. When the pressure plate 61 and the working box 3 are extruded, the extrusion column 621 is used to eject the surface of the movable mold 15, so that the die-casting is separated from the movable mold 15. During the pressure of the pressure plate 61, the movable tube 71 on the extrusion plate 62 is ejected. Subsequently, before the next die-casting, a release agent is sprayed on the surface of the movable mold 15 and the fixed mold 16, and the air pump 14 is started to quickly blow dry through the air outlet 713 to avoid residual release agent 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, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly 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 appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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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