Die casting device for automobile metal parts

Abstract

The invention relates to the technical field of die-casting equipment, and discloses an automobile metal part die-casting device which comprises an auxiliary mechanism, the outer portion of a die is movably sleeved with the auxiliary mechanism, the auxiliary mechanism comprises an auxiliary body, the inner side of the auxiliary body is movably connected with the outer side of the die in a clamped mode, and auxiliary grooves are formed in the two ends of the auxiliary body. The auxiliary body is movably sleeved with the two ends of the auxiliary piece through the auxiliary grooves, and the top end of the auxiliary piece located above the mold is fixedly connected with the bottom end of the auxiliary plate. After the fixed mold and the movable mold are closed, the auxiliary mechanism effectively covers the joint between the fixed mold and the movable mold, so that the fixed mold and the movable mold are limited and sleeved by the auxiliary mechanism, the butt joint state of the fixed mold and the movable mold is adjusted, and the closing tightness and accuracy of the fixed mold and the movable mold are ensured; therefore, the problem of dislocation or gaps during die assembly of the fixed die and the movable die is effectively prevented, flash and burrs caused by overflow of molten metal in the die-casting process are avoided, and the manufacturing quality of automobile parts is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of die casting equipment, in particular to an automobile metal part die casting device. BACKGROUND

[0002] In automobile manufacturing, in order to realize lightweight, high strength, complex structure and excellent thermal management, automobile metal parts widely use non-ferrous metals, such as engine systems, chassis systems, etc. To manufacture non-ferrous metal parts with complex shape, accurate size and smooth surface, a die casting device is often used for die casting manufacturing. The existing die casting device includes a mold composed of a fixed mold and a movable mold, a pressure injection system, a mold closing system, an ejection system, etc. In operation, the mold closing system closes the fixed mold and the movable mold, then the pressure injection system injects molten non-ferrous metal (i.e. metal not containing iron or containing very low iron, such as aluminum, magnesium, zinc, copper, etc.) into the precise mold cavity, and after cooling and solidification, the required casting is formed. Finally, the fixed mold and the movable mold are separated, and the casting is pushed out by the ejection system.

[0003] However, the existing die casting device still has some defects in use: first, after long-term use, the fixed mold and the movable mold will deform due to various factors, causing misalignment or gaps when the fixed mold and the movable mold are closed, resulting in overflow of the metal liquid during the die casting process, forming flash and burrs, affecting the manufacturing quality of the parts; second, in actual use, due to the presence of air inside the mold composed of the fixed mold and the movable mold, and the air is not easy to be discharged, causing the metal liquid to be unable to quickly expel the air in time when entering the mold, resulting in the internal pores of the metal parts produced by die casting, reducing the strength of the metal parts. SUMMARY

[0004] The application provides an automobile metal part die casting device, which effectively utilizes the auxiliary mechanism to limit the fixed mold and the movable mold, improves the closing accuracy of the two, and effectively promotes the timely discharge of the internal air of the fixed mold and the movable mold, preventing the parts from having pores, to solve the problem of poor part quality caused by the above-mentioned situation.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical solution: an automobile metal part die casting device, comprising:

[0006] a mold, the mold comprising a fixed mold and a movable mold, the fixed mold and the movable mold being oppositely arranged, and the fixed mold and the movable mold each having a cavity inside;

[0007] An auxiliary mechanism is movably sleeved on the outside of the mold. The auxiliary mechanism includes an auxiliary body, and the inner side of the auxiliary body is movably engaged with the outer side of the mold. The two ends of the auxiliary body are provided with auxiliary grooves, and the auxiliary body is movably sleeved with the two ends of the auxiliary component through the auxiliary grooves. The top end of the auxiliary component located above the mold is fixedly connected to the bottom end of the auxiliary plate, and the bottom end of the auxiliary component located below the mold is connected to the bottom end of the auxiliary body through a power component.

[0008] After the fixed mold and the moving mold are closed, the control power component pulls the auxiliary plate and auxiliary component down, so that the auxiliary body and the auxiliary plate tightly cover the connection between the fixed mold and the moving mold, so as to adjust the docking state of the fixed mold and the moving mold.

[0009] Furthermore, both the auxiliary body and the auxiliary component have a U-shaped side view.

[0010] Furthermore, it also includes a working mechanism, on which the mold is mounted, the working mechanism comprising:

[0011] A left fixing frame and a right fixing frame, wherein the left fixing frame and the right fixing frame are arranged opposite to each other;

[0012] The left and right fixed frames are fixedly connected to four working shafts.

[0013] A movable frame is movably sleeved on a working shaft, and four working shafts are respectively located at the four corners of the movable frame.

[0014] Furthermore, the fixed mold is bolted to the left fixed frame, and the moving mold is bolted to the movable frame. The mold is provided with:

[0015] An injection assembly is provided on the left fixed frame. An injection channel is provided inside the fixed mold, and the injection channel of the fixed mold is connected to the inside of the injection assembly.

[0016] The mold clamping assembly has its right fixed frame wall surface fixedly sleeved with one end of the mold clamping assembly, and the other end of the mold clamping assembly fixedly connected to the wall surface of the movable frame.

[0017] An ejection assembly is provided inside the moving mold.

[0018] Furthermore, the auxiliary mechanism also includes:

[0019] Connectors are fixedly connected to both sides of the auxiliary body;

[0020] Connecting rods: Two connecting rods are fixedly connected between the left fixed frame and the right fixed frame, and the two connecting rods are respectively sleeved on the two connecting parts;

[0021] An exhaust assembly is provided inside the auxiliary plate and auxiliary components;

[0022] A limiting component is provided inside the auxiliary component.

[0023] Furthermore, the exhaust assembly includes:

[0024] An air intake component is fixedly sleeved inside the auxiliary plate. The air intake component is in the shape of an inverted "U" and has several air intake ports that are connected to the outside.

[0025] The transition component has a central groove at both ends, with the central groove located on the side of the auxiliary component closer to the mold. The auxiliary component is fixedly connected to one side wall of the transition component through the central groove, and the other side wall of the transition component can contact the auxiliary groove wall of the auxiliary body when the transition component is extended. The two ends of the air intake component are fixedly connected to the top ends of the two transition components respectively, and an opening and closing valve is provided in the end of the air intake component connected to the transition component.

[0026] An air outlet is fixedly sleeved inside the bottom end of the auxiliary component. The air outlet is U-shaped. Both ends of the air outlet are fixedly connected to the bottom ends of two transition components. An air outlet port is provided on the air outlet and is connected to the outside. An air pump is provided on the air outlet port and is bidirectional.

[0027] Furthermore, the mold is also provided with:

[0028] The connecting pipe has several overflow grooves on the upper half of both the fixed mold and the moving mold, and the overflow grooves of the fixed mold and the moving mold correspond one-to-one. One end of the overflow groove is connected to the cavity, and the other end of the overflow groove is connected to the outside. One end of the connecting pipe is fixedly connected to the end of the overflow groove on the fixed mold, and the other end of the connecting pipe can be movably engaged with the air inlet port of the air inlet component.

[0029] Furthermore, two side grooves are formed in the auxiliary components located on both sides of the transition member, and a set of limiting components is symmetrically arranged in the two side grooves, with each set of limiting components comprising several components. The limiting components include:

[0030] A limiting plate is fixedly connected to the auxiliary body wall inside the side groove;

[0031] A limiting block is movably provided at the top of the limiting plate, and a T-shaped component is fixedly connected to the bottom of the limiting block. A T-shaped groove is opened at the top of the limiting plate, and the T-shaped component is movably engaged in the T-shaped groove. The size of the T-shaped groove is larger than that of the T-shaped component. A square hole is opened on the auxiliary body, and the auxiliary body is movably engaged with one end of the limiting block through the square hole. The size of the square hole is larger than that of the limiting block. One end of the limiting block is vertical, and the other end of the limiting block is inclined.

[0032] A push block is fixedly connected to the auxiliary wall inside the side groove. The cross-sectional shape of the push block is a right triangle, and the inclined surface of the push block is in contact with the inclined surface of the limiting block.

[0033] Furthermore, the transition piece is a composite rubber material that can shield magnetic fields, and the two opposing limiting blocks have opposite magnetic properties.

[0034] The beneficial effects of this invention are as follows:

[0035] This application provides a die-casting apparatus for automotive metal parts. By setting an auxiliary mechanism between the fixed mold and the moving mold, after the fixed mold and the moving mold are closed, the auxiliary mechanism effectively covers the connection between the fixed mold and the moving mold, realizing the limiting sleeve of the auxiliary mechanism on the fixed mold and the moving mold to adjust the docking state of the fixed mold and the moving mold, ensuring the tightness and accuracy of the fixed mold and the moving mold closing, thereby effectively preventing the fixed mold and the moving mold from misaligning or gaps when closing, avoiding the overflow of molten metal during the die-casting process and forming flash and burrs, and improving the quality of automotive parts manufacturing.

[0036] The auxiliary mechanism is composed of an auxiliary body, an auxiliary plate, auxiliary components, a power component, and an exhaust assembly. The exhaust assembly includes an air inlet component located within the auxiliary plate, a transition component located within the auxiliary components, and an air outlet component. An overflow groove is provided on the parting surface of the fixed mold, and a connecting pipe is connected to the top of the overflow groove. When the auxiliary mechanism moves to the connection point between the fixed mold and the moving mold, the auxiliary plate and auxiliary components move downward under the action of the power component. This not only stabilizes and restricts the fixed mold and the moving mold with the auxiliary body and auxiliary plate, but also ensures stable connection between the port of the air inlet component and the port of the connecting pipe. Thus, when the air pump on the air outlet component is performing air intake, the exhaust assembly and connecting pipe are used to timely and fully exhaust the air inside the mold composed of the fixed mold and the moving mold, effectively preventing air residue from causing air holes inside the automotive parts, and further improving the manufacturing quality of automotive parts.

[0037] By designing an air inlet, transition piece, and air outlet, two extension pieces that can expand and contract inside the auxiliary component are set between the air inlet and air outlet. The end of the air inlet connected to the transition piece is equipped with an opening and closing valve. After injection, the opening and closing valve is closed. At this time, the operation of the air outlet realizes the reciprocating expansion and contraction of the transition piece, which causes the auxiliary body to drive the fixed mold and moving mold to vibrate, thereby effectively expelling the air in the molten metal and further improving the density and strength of the automotive parts.

[0038] By setting multiple sets of limiting components on the auxiliary bodies and auxiliary plates located on both sides of the transition piece, and the limiting components include limiting plates and limiting blocks set on the auxiliary bodies, and pushing blocks set on the auxiliary parts, when the auxiliary parts drive the pushing blocks to move downward, they effectively push the limiting blocks to move towards the fixed mold and the moving mold, and make contact with them, increasing the clamping force on the fixed mold and the moving mold, thereby improving the mold closing effect of the auxiliary mechanism on the fixed mold and the moving mold. When the exhaust component performs the suction operation, the transition piece retracts and no longer shields the two horizontally set limiting blocks, so that magnetic attraction is generated between the two limiting blocks, and the two limiting blocks have a relative movement tendency, further improving the mold closing effect of the auxiliary mechanism on the fixed mold and the moving mold. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0040] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0041] Figure 2 This is a three-dimensional structural diagram of the fixed mold, the moving mold, and their components in this invention;

[0042] Figure 3 This is a cross-sectional three-dimensional structural view of the fixed mold, the moving mold, and their components in this invention;

[0043] Figure 4 In this invention Figure 3 Enlarged structural diagram at point A;

[0044] Figure 5 This is a three-dimensional structural diagram of the auxiliary mechanism in this invention;

[0045] Figure 6 This is a three-dimensional structural diagram of the auxiliary mechanism in this invention without connectors and connecting rods, in a disassembled state.

[0046] Figure 7 This is a three-dimensional structural diagram of a partial auxiliary mechanism in this invention;

[0047] Figure 8 This is a three-dimensional structural diagram of the exhaust assembly in this invention;

[0048] Figure 9 This is a three-dimensional structural diagram of the limiting component in this invention;

[0049] Figure 10 This is a three-dimensional structural diagram of the fixed mold, moving mold, and local auxiliary mechanisms in this invention;

[0050] Figure 11 This is a frontal cross-sectional three-dimensional structural view of the fixed mold, moving mold, and local auxiliary mechanisms in this invention;

[0051] Figure 12 This is a side view sectional perspective structural diagram of the fixed mold, moving mold, and local auxiliary mechanisms in this invention;

[0052] Figure 13 In this invention Figure 12 Enlarged structural diagram at point B;

[0053] Figure 14 This is a side cross-sectional perspective view of a partial auxiliary mechanism located at the limiting component in this invention.

[0054] Figure 15 In this invention Figure 14 Enlarged structural diagram at point C.

[0055] In the diagram: 1. Working mechanism; 11. Left fixed frame; 12. Right fixed frame; 13. Working shaft; 14. Movable frame; 2a. Fixed mold; 2b. Moving mold; 3. Auxiliary mechanism; 31. Auxiliary body; 32. Auxiliary plate; 33. Auxiliary component; 34. Power component; 35. Connecting component; 36. Connecting rod; 4. Exhaust assembly; 41. Air inlet component; 42. Transition component; 43. Air outlet component; 5. Limiting assembly; 51. Limiting plate; 52. Limiting block; 53. Pushing block; 6. Connecting pipe; 7. Injection assembly; 71. Injection pipe; 72. Injection rod; 73. Injection part; 8. Mold closing assembly; 9. Ejection assembly. Detailed Implementation

[0056] 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.

[0057] Example 1: A die-casting apparatus for automotive metal parts, such as... Figures 1-4The system includes a left fixed frame 11 and a right fixed frame 12, which are arranged opposite to each other. Four working shafts 13 are fixedly connected between the left and right fixed frames 11 and 12. A movable frame 14 is movably sleeved on the working shafts 13, with the four working shafts 13 respectively located at the four corners of the movable frame 14. Thus, the movable frame 14 is stably supported by the working shafts 13, and can move back and forth on the working shafts 13, thereby adjusting the distance between the movable frame 14 and the left and right fixed frames 11 and 12. This allows for the installation of a fixed mold 2a and a movable mold. The adjustment of the distance between molds 2b is facilitated. The left fixed frame 11, the right fixed frame 12, the working shaft 13 and the movable frame 14 constitute the working mechanism 1. The working mechanism 1 is equipped with molds, and the molds include a fixed mold 2a and a movable mold 2b. The fixed mold 2a is fixedly mounted on the left fixed frame 11 by bolts, and the movable mold 2b is fixedly mounted on the movable frame 14 by bolts. The fixed mold 2a and the movable mold 2b are arranged opposite to each other, and both the fixed mold 2a and the movable mold 2b have cavities inside. Thus, the shape formed by the cavity of the fixed mold 2a and the cavity of the movable mold 2b is the shape of the part.

[0058] like Figures 2-4 The mold is equipped with an injection assembly 7, a mold closing assembly 8, and an ejection assembly 9, specifically:

[0059] like Figures 2-4 An injection assembly 7 is provided on the left fixed frame 11. An injection channel is opened inside the fixed mold 2a, and the injection channel of the fixed mold 2a communicates with the interior of the injection assembly 7. Specifically, the injection assembly 7 includes an injection tube 71, an injection rod 72, and an injection element 73. One end of the injection tube 71 is fixedly sleeved with the left fixed frame 11, and the other end of the injection tube 71 is movably sleeved with the injection rod 72. The top end of the injection tube 71, located outside the left fixed frame 11, is fixedly connected to the injection element 73, and the side wall of the injection element 73 is fixedly connected to the side wall of the left fixed frame 11. During operation, the injection element first... 73. Pour the molten metal into the injection tube 71, and then push the injection rod 72 forward toward the fixed mold 2a to inject the molten metal into the mold cavity through the injection channel. It should be noted that the movement pattern of the injection rod 72 is "slow-fast-slow" to effectively ensure that the molten metal fully fills the mold cavity. In addition, after the molten metal fills the cavity, the injection rod 72 will not retract immediately, but will continue to maintain a pressure for holding pressure. Under the holding pressure, the injection rod 72 moves forward to continuously replenish the molten metal to the solidifying and shrinking part, ensuring that the casting is dense inside and avoiding shrinkage cavities.

[0060] like Figures 2-4The wall of the right fixed frame 12 is fixedly sleeved with one end of the mold closing assembly 8, and the other end of the mold closing assembly 8 is fixedly connected to the wall of the movable frame 14. When the mold is closed, the mold closing assembly 8 controls the movement of the movable frame 14, so that the movable mold 2b moves towards the fixed mold 2a to achieve mold closure and locking. It should be noted that after the mold is closed, a release agent should be evenly sprayed onto the surface of the mold cavity to help the parts cool down and be demolded smoothly. When the mold is opened, that is, after the parts are basically shaped, the mold closing assembly 8 controls the movement of the movable frame 14 to move the movable mold 2b away from the fixed mold 2a to achieve mold opening.

[0061] like Figures 3-4 The moving mold 2b is equipped with an ejector assembly 9, which can move along the cavity. After the mold is opened, the ejector assembly 9 moves forward and can push the part out of the moving mold 2b.

[0062] like Figure 1 , Figures 5-6 An auxiliary mechanism 3 is externally fitted to the mold to improve the closing accuracy of the fixed mold 2a and the moving mold 2b. The auxiliary mechanism 3 includes an auxiliary body 31, an auxiliary plate 32, an auxiliary component 33, a power component 34, a connecting component 35, and a connecting rod 36. The inner side of the auxiliary body 31 is movably engaged with the outer side of the mold. Auxiliary grooves are provided at both ends of the auxiliary body 31, and the auxiliary body 31 is movably fitted with both ends of the auxiliary component 33 through these grooves. The top end of the auxiliary component 33 located above the mold is fixedly connected to the bottom end of the auxiliary plate 32. The bottom end of the auxiliary component 33 located below the mold is connected to the bottom end of the auxiliary body 31 through the power component 34. The side thickness of the auxiliary body 31 and the auxiliary plate 32 are specified. The side thickness of the auxiliary plate 32 is equal, which effectively ensures that the auxiliary body 31 and the auxiliary plate 32 can evenly cover the fixed mold 2a and the moving mold 2b. The side view shape of the auxiliary body 31 and the auxiliary component 33 is U-shaped, and the opening direction of the auxiliary body 31 and the auxiliary component 33 is the same, which facilitates the installation of the power component 34. The position and height of the auxiliary component 33 on the auxiliary body 31 can be adjusted by the power component 34. Connecting components 35 are fixedly connected to both sides of the auxiliary body 31. Two connecting rods 36 are fixedly connected between the left fixed frame 11 and the right fixed frame 12, and the two connecting rods 36 are respectively sleeved on the two connecting components 35, thereby effectively providing stable support for the auxiliary body 31 and its components.

[0063] After the fixed mold 2a and the moving mold 2b are closed, when the auxiliary mechanism 3 moves to the connection between the fixed mold 2a and the moving mold 2b, the control power component 34 pulls the auxiliary plate 32 and the auxiliary component 33 downward, so that the auxiliary body 31 and the auxiliary plate 32 tightly cover the fixed mold 2a and the moving mold 2b, thereby adjusting the docking state of the fixed mold 2a and the moving mold 2b, ensuring the tightness and accuracy of the mold closing of the fixed mold 2a and the moving mold 2b, thereby effectively preventing the fixed mold 2a and the moving mold 2b from misaligning or gapping during mold closing, avoiding the overflow of molten metal during the die casting process and forming flash and burrs, thus improving the quality of automotive parts manufacturing.

[0064] Example 2, based on Example 1, such as Figures 5-8 The auxiliary mechanism 3 also includes an exhaust assembly 4. The exhaust assembly 4 is internally located within the auxiliary plate 32 and auxiliary component 33 to provide power for mold venting. The exhaust assembly 4 includes an inlet component 41, a transition component 42, and an outlet component 43. Figures 10-13An air inlet component 41 is fixedly fitted inside the auxiliary plate 32. The air inlet component 41 is in the shape of an inverted "U" and has several air inlet ports that are connected to the outside to facilitate the intake of outside air. Both ends of the auxiliary component 33 have central grooves, with the central grooves located on the side closest to the mold. The auxiliary component 33 is fixedly connected to one side wall of the transition component 42 via the central grooves. The other side wall of the transition component 42 can contact the auxiliary groove wall of the auxiliary body 31 when the transition component 42 is extended. Specifically, when the exhaust assembly 4 is inflated, the transition component 42 extends due to the increased gas pressure, causing the transition component 42 to protrude beyond the central groove of the auxiliary component 33. The wall surface of component 42 contacts the auxiliary groove of auxiliary body 31. When the exhaust assembly 4 performs air intake, the transition component 42 contracts due to the decrease in gas pressure, causing the transition component 42 to contract into the middle groove of auxiliary component 33. At this time, the wall surface of the transition component 42 does not contact the auxiliary groove of auxiliary body 31. In summary, the transition component 42 can reciprocate and deform, thus reciprocating and impacting auxiliary body 31, thereby driving the fixed mold 2a and the moving mold 2b to vibrate, effectively causing the air in the molten metal to vibrate and be discharged, further improving the density and strength of the automotive parts. The two ends of the air intake component 41 are fixedly connected to the top ends of the two transition components 42, and the end of the air intake component 41 connected to the transition component 42 is provided with an opening and closing valve, which can close or open the air intake component 41 and the transition component. The connection channel between 42 allows control over the operation of each component within the exhaust assembly 4. An air outlet 43 is fixedly fitted inside the bottom of the auxiliary component 33. The air outlet 43 is U-shaped, with both ends fixedly connected to the bottom ends of the two transition components 42. The air outlet 43 has an air outlet port that connects to the outside, facilitating the discharge of air from the inlet component 41, transition component 42, and air outlet 43, or facilitating the intake of outside air from the transition component 42 and air outlet 43. An air pump is installed at the air outlet port, and the air pump is bidirectional, allowing for the inflation or deflation of air into or from the exhaust assembly 4. Specifically, if assistance is needed to remove air from inside the mold... When the mold is discharged, the advanced air component 41 is connected to the connecting pipe 6, and then the opening and closing valve is opened. At this time, the air pump performs an air intake operation, thereby drawing air out of the mold through the air outlet component 43, the transition component 42 and the air inlet component 41 via the connecting pipe 6. This promotes the timely and sufficient discharge of air from the mold, effectively preventing air residue from causing air holes inside the automotive parts and improving the manufacturing quality of automotive parts. If it is necessary to further discharge the air inside the mold, the opening and closing valve is closed first. At this time, the air pump performs reciprocating air intake and inflation operations, causing the air outlet component 43 and the transition component 42 to reciprocate air intake and exhaust. This allows the auxiliary body 31 to impact and vibrate to discharge the air in the molten metal, further improving the density and strength of the automotive parts.

[0065] like Figures 3-4 , Figure 11The mold is also equipped with a connecting pipe 6. The upper half of the fixed mold 2a and the moving mold 2b are provided with several overflow grooves, and the overflow grooves of the fixed mold 2a and the moving mold 2b correspond one-to-one. When the fixed mold 2a and the moving mold 2b are closed, the two overflow grooves merge to form a tubular hole to facilitate the flow of excess molten metal. One end of the overflow groove is connected to the cavity, and the other end of the overflow groove is connected to the outside to facilitate the exhaust of air in the cavity. One end of the connecting pipe 6 is fixedly connected to the end of the overflow groove on the fixed mold 2a, and the other end of the connecting pipe 6 can be movably engaged with the air inlet port of the air inlet component 41. When the exhaust component 4 performs air intake, the air inlet component 41 has an adsorption force, and through the action of the connecting pipe 6, the air in the mold cavity can be discharged in a timely and sufficient manner.

[0066] Example 3, based on Example 2, such as Figures 5-7 , Figure 9 The auxiliary mechanism 3 also includes limiting components 5. The auxiliary component 33 has limiting components 5 inside to enhance the mold-closing effect of the auxiliary mechanism 3 on the fixed mold 2a and the moving mold 2b. Two side grooves are opened in the auxiliary component 33 located on both sides of the transition component 42. A set of limiting components 5 is symmetrically arranged in the two side grooves, and each set of limiting components 5 contains several components. The limiting components 5 include a limiting plate 51, a limiting block 52, and a pushing block 53. Figures 10-15 A limiting plate 51 is fixedly connected to the wall of the auxiliary body 31 located inside the side groove. A limiting block 52 is movably installed at the top of the limiting plate 51, and a T-shaped piece is fixedly connected to the bottom of the limiting block 52. A T-shaped groove is opened at the top of the limiting plate 51, and the T-shaped piece is movably engaged in the T-shaped groove, thereby ensuring that the limiting block 52 can move horizontally towards and away from the mold within the limiting plate 51. The size of the T-shaped groove is larger than that of the T-shaped piece, thereby ensuring that the limiting block 52 can move horizontally towards and away from the connection point within the limiting plate 51. A square hole is opened on the auxiliary body 31, and the auxiliary body 31 is movably engaged with one end of the limiting block 52 through the square hole. The size of the square hole is larger than that of the limiting block 52, thereby allowing the limiting block 52 to move horizontally towards and away from the connection point within the limiting plate 51. The auxiliary mechanism 3 assists in horizontal movement towards and away from the connection point. One end of the limiting block 52 is vertical, and the other end is inclined. The auxiliary component 33 located inside the side groove has a push block 53 fixedly connected to its wall. The cross-sectional shape of the push block 53 is a right triangle, and the inclined surface of the push block 53 is in contact with the inclined surface of the limiting block 52. When the auxiliary component 33 moves the push block 53 upward, the push block 53 separates from the limiting block 52. At this time, the limiting block 52 exerts less pressure on the mold, which facilitates the movement of the auxiliary mechanism 3 on the mold. When the auxiliary component 33 moves the push block 53 downward, the push block 53 is in contact with the limiting block 52 and causes the limiting block 52 to abut against the mold, thereby improving the mold closing effect of the auxiliary mechanism 3 on the fixed mold 2a and the moving mold 2b.

[0067] Example 4, based on Example 3, such asFigure 9 , Figures 14-15 The transition piece 42 is made of a composite rubber material that can shield magnetic fields. The two opposing limit blocks 52 have opposite magnetic fields. After the auxiliary mechanism 3 performs mold closing calibration on the fixed mold 2a and the moving mold 2b, the transition piece 42 is stretched by the air pump. At this time, the transition piece 42 isolates the two limit blocks 52, so that the magnetic field between them is shielded. Then the transition piece 42 is compressed by the air pump. At this time, the transition piece 42 does not isolate the two limit blocks 52, so that a magnetic attraction force is generated between them. Thus, the two limit blocks 52 have a relative movement tendency, so as to apply a driving force for the opposing fixed mold 2a and the moving mold 2b, further improving the mold closing effect of the auxiliary mechanism 3 on the fixed mold 2a and the moving mold 2b.

[0068] The working principle of the method of using this invention is as follows:

[0069] When the mold is closed, the mold closing assembly 8 is activated to move the movable frame 14, causing the movable mold 2b to move towards the fixed mold 2a, thus achieving mold closing. After mold closing, the auxiliary body 31 is moved, causing the auxiliary body 31, auxiliary plate 32, etc., to move horizontally along the connecting rod 36 until the auxiliary body 31 moves to the connection point between the fixed mold 2a and the movable mold 2b. Then, the power component 34 is activated to drive the auxiliary plate 32 and auxiliary component 33 to move downwards until the auxiliary plate 32 is in contact with the top surface of the mold. Thus, the auxiliary body 31 and auxiliary plate 32 together cover the connection point between the fixed mold 2a and the movable mold 2b, thereby achieving the limiting sleeve connection of the auxiliary mechanism 3 on the fixed mold 2a and the movable mold 2b, allowing adjustment of the fixed mold. The docking state of the fixed mold 2a and the moving mold 2b ensures the tightness and accuracy of the mold closing between the fixed mold 2a and the moving mold 2b, thereby effectively preventing misalignment or gaps between the fixed mold 2a and the moving mold 2b during mold closing, avoiding the overflow of molten metal during the die casting process and the formation of flash and burrs, thus improving the quality of automotive parts manufacturing. As the auxiliary part 33 moves down along the auxiliary groove of the auxiliary body 31, the pushing block 53 pushes the limiting block 52 to abut against the fixed mold 2a and the moving mold 2b, thereby increasing the clamping force on the fixed mold 2a and the moving mold 2b and preventing the fixed mold 2a and the moving mold 2b from separating during the die casting process, thereby improving the mold closing effect of the auxiliary mechanism 3 on the fixed mold 2a and the moving mold 2b.

[0070] Before injection, the opening and closing valve is first opened. As the auxiliary plate 32 descends to contact the top surface of the mold, the air inlet port of the air inlet 41 is stably connected to the port of the connecting pipe 6. At this time, the air pump performs air suction operation. Through the connecting pipe 6, the air inlet 41, the transition piece 42 and the air outlet 43, the air in the mold cavity can be discharged in a timely and sufficient manner, effectively preventing air residue from causing air holes inside the automotive parts and improving the manufacturing quality of automotive parts. During this process, the transition piece 42 is contracted by the suction force, and the transition piece 42 no longer shields the two horizontally set limit blocks 52. At this time, a magnetic attraction force is generated between the two limit blocks 52, so the two limit blocks 52 have a relative movement tendency. Since the limit blocks 52 abut against the mold, they can apply opposing thrusts to the fixed mold 2a and the moving mold 2b, further improving the mold closing effect of the auxiliary mechanism 3 on the fixed mold 2a and the moving mold 2b.

[0071] During injection, molten metal is injected into the cavity of the mold through the injection assembly 7. After injection, the opening and closing valve is closed, and the air pump performs reciprocating suction and exhaust operations, which causes the transition piece 42 to reciprocate to impact the auxiliary body 31, thereby driving the fixed mold 2a and the moving mold 2b to vibrate. This effectively vibrates and discharges the air in the molten metal, further improving the density and strength of the automotive parts.

[0072] When the mold is opened, the molten metal cools and forms a solid part. At this time, the auxiliary mechanism 3 removes the fixing of the fixed mold 2a and the moving mold 2b. Then, the mold closing assembly 8 controls the moving mold 2b to move away from the fixed mold 2a, thereby realizing the mold opening. Finally, the ejection assembly 9 is activated to push the part out of the moving mold 2b, so as to realize the removal of the part.

[0073] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A die-casting apparatus for automotive metal parts, characterized in that, include: The mold includes a fixed mold (2a) and a movable mold (2b), which are arranged opposite to each other, and both the fixed mold (2a) and the movable mold (2b) have cavities inside. Auxiliary mechanism (3) is movably sleeved on the outside of the mold. The auxiliary mechanism (3) includes an auxiliary body (31), and the inner side of the auxiliary body (31) is movably engaged with the outer side of the mold. The two ends of the auxiliary body (31) are provided with auxiliary grooves, and the auxiliary body (31) is movably sleeved with the two ends of the auxiliary component (33) through the auxiliary grooves. The top end of the auxiliary component (33) located above the mold is fixedly connected to the bottom end of the auxiliary plate (32), and the bottom end of the auxiliary component (33) located below the mold is connected to the bottom end of the auxiliary body (31) through a power component (34). After the fixed mold (2a) and the moving mold (2b) are closed, the control power component (34) pulls the auxiliary plate (32) and the auxiliary component (33) down, so that the auxiliary body (31) and the auxiliary plate (32) tightly cover the connection between the fixed mold (2a) and the moving mold (2b) to adjust the docking state of the fixed mold (2a) and the moving mold (2b).

2. The die-casting apparatus for automotive metal parts according to claim 1, characterized in that, Both the auxiliary body (31) and the auxiliary component (33) have a U-shaped side view.

3. The die-casting apparatus for automotive metal parts according to claim 2, characterized in that, It also includes a working mechanism (1), the mold being mounted on the working mechanism (1), the working mechanism (1) comprising: The left fixing frame (11) and the right fixing frame (12) are arranged opposite to each other; The working shafts (13) are fixedly connected between the left fixed frame (11) and the right fixed frame (12). The movable frame (14) is movably sleeved on the working shaft (13), and the four working shafts (13) are respectively set at the four corners of the movable frame (14).

4. The die-casting apparatus for automotive metal parts according to claim 3, characterized in that, The fixed mold (2a) is bolted to the left fixed frame (11), and the moving mold (2b) is bolted to the movable frame (14). The mold is provided with: Injection assembly (7), the left fixed frame (11) is provided with injection assembly (7), the inside of the fixed mold (2a) is provided with injection channel, and the injection channel of the fixed mold (2a) is connected to the inside of the injection assembly (7); The mold clamping assembly (8) has its wall surface fixedly sleeved with one end of the mold clamping assembly (8), and the other end of the mold clamping assembly (8) is fixedly connected to the wall surface of the movable frame (14). Ejection assembly (9) is provided inside the moving mold (2b).

5. The die-casting apparatus for automotive metal parts according to claim 4, characterized in that, The auxiliary mechanism (3) also includes: Connector (35), the auxiliary body (31) is fixedly connected to both sides of the connector (35); Connecting rod (36): Two connecting rods (36) are fixedly connected between the left fixed frame (11) and the right fixed frame (12), and the two connecting rods (36) are respectively sleeved on the two connecting pieces (35); An exhaust assembly (4) is provided inside the auxiliary plate (32) and the auxiliary component (33); Limiting component (5), the auxiliary component (33) is provided with limiting component (5).

6. The die-casting apparatus for automotive metal parts according to claim 5, characterized in that, The exhaust assembly (4) includes: An air intake component (41) is fixedly sleeved inside the auxiliary plate (32). The air intake component (41) is in the shape of an inverted "U". The air intake component (41) is provided with several air intake ports, and the air intake ports are connected to the outside. The transition piece (42) has a central groove at both ends of the auxiliary piece (33), and the central groove is located on the side of the auxiliary piece (33) closer to the mold. The auxiliary piece (33) is fixedly connected to one side wall of the transition piece (42) through the central groove, and the other side wall of the transition piece (42) can contact the auxiliary groove wall of the auxiliary body (31) when the transition piece (42) is extended. The two ends of the air inlet piece (41) are fixedly connected to the top ends of the two transition pieces (42) respectively, and an opening and closing valve is provided in the end of the air inlet piece (41) connected to the transition piece (42). An air outlet (43) is fixedly sleeved inside the bottom end of the auxiliary component (33). The air outlet (43) is U-shaped. Both ends of the air outlet (43) are fixedly connected to the bottom ends of two transition components (42). An air outlet port is provided on the air outlet (43) and is connected to the outside. An air pump is provided on the air outlet port and is bidirectional.

7. The die-casting apparatus for automotive metal parts according to claim 6, characterized in that, The mold is also equipped with: The connecting pipe (6) has several overflow grooves on the upper half of both the fixed mold (2a) and the moving mold (2b), and the overflow grooves of the fixed mold (2a) and the moving mold (2b) correspond one-to-one. One end of the overflow groove is connected to the cavity, and the other end of the overflow groove is connected to the outside. One end of the connecting pipe (6) is fixedly connected to the end of the overflow groove on the fixed mold (2a), and the other end of the connecting pipe (6) can be movably engaged with the air inlet port of the air inlet component (41).

8. The die-casting apparatus for automotive metal parts according to claim 7, characterized in that, Two side grooves are formed in the auxiliary parts (33) located on both sides of the transition member (42). A set of limiting components (5) is symmetrically arranged in the two side grooves, and the number of limiting components (5) in each set is several. The limiting components (5) include: The limiting plate (51) is fixedly connected to the wall of the auxiliary body (31) located inside the side groove; Limiting block (52), the top of the limiting plate (51) is movably provided with limiting block (52), the bottom end of the limiting block (52) is fixedly connected with a T-shaped piece, the top of the limiting plate (51) is provided with a T-shaped groove, and the T-shaped piece is movably engaged in the T-shaped groove, the size of the T-shaped groove is larger than the T-shaped piece, the auxiliary body (31) is provided with a square hole, and the auxiliary body (31) is movably engaged with one end of the limiting block (52) through the square hole, the size of the square hole is larger than the size of the limiting block (52), one end of the limiting block (52) is vertical, and the other end of the limiting block (52) is inclined; The push block (53) is fixedly connected to the wall of the auxiliary component (33) inside the side groove. The cross-sectional shape of the push block (53) is a right triangle, and the inclined surface of the push block (53) is in contact with the inclined surface of the limiting block (52).

9. The die-casting apparatus for automotive metal parts according to claim 8, characterized in that, The transition piece (42) is a composite rubber material that can shield magnetic fields, and the two limiting blocks (52) arranged opposite to each other have opposite magnetism.

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