A die-casting die for an aluminum alloy housing of an automobile structural part

Abstract

The present invention discloses a die-casting mold for an aluminum alloy shell of an automobile structural part, and the present invention relates to the technical field of die-casting molds. During the injection process, the material between the injection pipe mouth and the shell molding cavity is not completely separated. After cooling, the material at the connection between the injection pipe mouth and the molding cavity is cooled and shaped at the same time, resulting in adhesion between the molded shell and the material in the injection pipe, resulting in blockage of the injection pipeline. Therefore, after stopping the injection, the baffle and the cavity cylinder are reset and moved upward, and the excess material is overlapped through the gap, so that the material in the molding cavity is separated from the material in the injection pipe, avoiding adhesion between the material in the pipeline and the material in the molding cavity after cooling, resulting in blockage of the injection pipeline and increased difficulty in demoulding. At the same time, the heat insulation ring blocks the internal heat from being conducted to the cooling cavity, so that the material in the injection pipe can be maintained within a stable temperature range when the material in the molding cavity is cooled.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting dies, in particular to a die-casting die for an aluminum alloy shell of an automobile structural part. Background Art

[0002] At present, the die-casting mold is a mold used in the die-casting process. Die-casting is a metal casting process. Its principle is to use high pressure to press liquid or semi-liquid metal into the mold cavity in a very short time, and solidify it under the action of pressure to obtain a casting. The die-casting mold usually consists of two parts, namely the fixed mold and the movable mold. The mold has a cavity that matches the shape of the required casting, a pouring system, an overflow system, an ejection mechanism and other structures. During the die-casting process, high-temperature liquid metal is injected into the mold cavity, and after rapid cooling and solidification, a casting with a specific shape and dimensional accuracy is formed;

[0003] Because the material between the injection nozzle and the shell molding cavity is not completely separated during the injection process, after cooling, the material at the connection between the injection nozzle and the molding cavity is cooled and shaped at the same time, resulting in the adhesion of the molded shell and the material in the injection tube, causing the injection pipeline to be blocked. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A die-casting mold for an aluminum alloy housing of an automobile structural part, comprising:

[0005] A fixed die, the fixed die having an outer groove formed by a shell, and a preheating mechanism fixedly installed at the bottom of the fixed die, and a fixed die base fixedly installed at the bottom of the preheating mechanism;

[0006] A movable die is used to cooperate with the fixed die to form a forming cavity of the aluminum alloy shell, and the movable die is located above the fixed die, and a movable platen is fixedly installed on the top of the movable die;

[0007] An injection mechanism, which provides an introduction path for the aluminum alloy hot melt material and is fixedly installed at the center of the inner wall of the movable mold;

[0008] A guide mechanism, which is used for guiding the path of the reciprocating motion between the movable mold and the fixed mold, and the guide mechanism is fixedly installed on the top of the fixed mold base;

[0009] Wherein, the injection mechanism includes an injection tube, the bottom end of the injection tube passes through the movable mold and is connected to the molding cavity, and a connecting ring is fixedly installed on the outside of the injection tube, the injection tube is fixedly installed at the center position of the inner wall of the movable mold through the connecting ring, and the inner wall of the injection tube is fixedly connected to a groove ring, the center position of the bottom of the groove ring is fixedly installed with a connecting rod, the outer side of the connecting rod is fixedly installed with a blocking column, the outer side of the blocking column is an inclined surface, the bottom of the connecting rod is fixedly installed with a bottom column, the inner wall of the injection tube is slidably installed with a cavity cylinder, and the The inner wall of the cavity is adapted to the outer side of the material-blocking column, and an arc groove ring is fixedly installed on the top of the cavity. The arc groove of the arc groove ring first contacts the injected material, and the contact surface between the arc groove and the injected material is increased by the arc groove, so that the arc groove ring can better transmit the pressure through the cavity to the baffle, so that the spring is deformed. At the same time, after the deformation, the baffle and the cavity are moved down at the same time, opening the gap between the material-blocking column and the bottom column, so that the material is introduced into the molding cavity through the gap. At the same time, after the injection is stopped, the baffle and the cavity are reset and moved up, and the excess material is overlapped through the gap. The material in the molding cavity is separated from the material in the injection pipe to avoid adhesion of the material in the pipe and the material in the molding cavity after cooling, which leads to blockage of the injection pipe and increased difficulty in demoulding. The top of the arc groove ring is provided with an arc groove, and an insulation ring is fixedly installed on the outside of the injection pipe. The insulation ring is wrapped to form a cavity between the insulation ring and the injection pipe. At the same time, the insulation ring blocks the internal heat from being conducted to the cooling cavity, so that the material in the injection pipe can be maintained in a stable temperature range when cooling the material in the molding cavity. In order to avoid the solidification of the material in the injection pipe caused by the temperature drop, which may cause solidification blockage in the injection pipe, the outer side of the bottom column is an arc-shaped inclined surface, and a baffle is slidably installed on the bottom of the inner wall of the injection pipe. The inner wall of the baffle is adapted to the outer side of the bottom column, and convex plates are provided on both sides of the baffle, and the tops of the convex plates are fixedly installed with connecting columns, the tops of the connecting columns are fixedly connected to a water retaining plate, and a fixed cylinder is slidably installed on the outer side of the water retaining plate, the bottom end of the fixed cylinder is fixedly connected to the inner wall of the movable mold, and a spring is fixedly installed on the bottom of the water retaining plate.

[0010] Preferably, the movable mold includes a top module, a protrusion is provided at the bottom center position of the top module, and the protrusion of the top module cooperates with the groove of the fixed mold to form a molding cavity, and a cooling cavity is opened on the inner wall of the top module, the bottom of the inner wall of the cooling cavity of the top module is fixedly connected to the bottom of the fixed cylinder, a fixing ring is fixedly installed on the top of the inner wall of the cooling cavity, a bottom ring is rotatably installed on the bottom of the fixing ring, an inclined guide plate is fixedly installed on the bottom of the bottom ring, and the inclined guide plate is evenly installed along the center position of the bottom ring, and the inner wall of the top module is fixed A cold water pipe is fixedly installed and symmetrically installed along the center position of the axis of the top module. The bottom end of the cold water pipe is connected to the cooling chamber. Positioning grooves are provided on both sides of the bottom of the top module. Through the cooperation of the positioning grooves and the guide columns, when the movable mold and the fixed mold overlap to form a molding cavity, the guide columns and the positioning grooves are overlapped and engaged to limit the overlapping position between the movable mold and the fixed mold. With the cooperation of the guide mechanism, the overlapping position between the fixed mold and the movable mold is accurate to prevent misalignment, which will cause deformation of the molding cavity and large deviation of the molded shell.

[0011] Preferably, the fixed mold includes a cavity plate, a groove is provided at the center of the top of the cavity plate, and the groove of the cavity plate cooperates with the protrusion of the top module to form a molding cavity, a top groove is provided in the groove of the cavity plate, a top material plate is slidably installed in the top groove of the cavity plate, bottom blocks are fixedly installed on both sides of the top material plate, a pressure block is clamped on the top of the bottom block, and the opposite surface of the pressure block is fixedly connected to the outer side of the top module, sliding holes are provided on the top of the top material plate near both sides of the bottom block, and guide columns are slidably installed at the sliding holes of the top material plate, and the guide columns are fixed on the top of the top material plate. The bottom is fixedly connected to the inner wall of the cavity plate, and elastic plates are fixedly installed on both sides of the bottom of the cavity plate adjacent to the bottom block. Through the recovery deformation of the elastic plate after the movable mold and the fixed mold are separated, and with the guidance of the guide column on the ejection plate during movement, the ejection plate can be pushed out of the cooled and formed shell under the push of the elastic plate. Under the restriction of the guide column, the shell is prevented from being tilted and pushed out, resulting in greater friction between the cavity plate and the shell, which hinders the ejection. The bottom end of the elastic plate is fixedly connected to the inner wall of the cavity plate, and the elastic plate is symmetrically installed along the center position of the axis of the cavity plate.

[0012] Preferably, the guide mechanism includes a guide rod, the bottom end of the guide rod is fixedly connected to the top of the fixed mold seat, and the guide rod is symmetrically installed along the center position of the axis of the fixed mold seat, and the outer side of the guide rod is evenly provided with grooves, and the top end of the guide rod is fixedly installed with a limiting block, and the outer side of the guide rod is slidably installed with a clamping ring, the inner wall of the clamping ring is provided with a protrusion, and the protrusion of the clamping ring is adapted to the groove of the guide rod, and the preheating mechanism includes a top cavity plate and a bottom cavity plate, and a preheating cavity is formed between the top cavity plate and the bottom cavity plate The top of the top cavity plate is fixedly connected to the bottom of the cavity plate, and the bottom of the bottom cavity plate is fixedly connected to the top of the fixed mold base. The hot oil is introduced into the preheating cavity through the hot oil pipe, and the molding cavity is heated before injection to increase the temperature in the cavity. This prevents the hot melt material from directly solidifying after entering the molding cavity due to the decrease in temperature in the molding cavity, and accumulating at the inlet to cause blockage, resulting in the inability of subsequent materials to be smoothly introduced into the molding cavity. Hot oil pipes are fixedly connected to both sides of the bottom cavity plate, and the hot oil pipes are communicated with the preheating cavity.

[0013] The present invention provides a die-casting die for an aluminum alloy housing of an automobile structural part. It has the following beneficial effects:

[0014] 1. The die-casting mold of the aluminum alloy shell of the automotive structural part first contacts the injected material through the arc groove of the arc groove ring, and increases the contact area with the injected material through the arc groove, so that the arc groove ring can better transfer the pressure to the baffle through the cavity tube, so that the spring is deformed. At the same time, after the deformation, the baffle and the cavity tube are moved downward at the same time, and the gap between the material-blocking column and the bottom column is opened, so that the material is introduced into the molding cavity through the gap. At the same time, after the injection is stopped, the baffle and the cavity tube are reset and moved upward, and the excess material is overlapped through the gap, so that the material in the molding cavity is separated from the material in the injection pipe, so as to avoid the adhesion of the material in the pipeline and the material in the molding cavity after cooling, which leads to blockage of the injection pipeline and increased difficulty in demolding.

[0015] Second, the die-casting mold of the aluminum alloy shell of the automotive structural part is wrapped with an insulation ring, so that there is a cavity between the insulation ring and the injection pipe. At the same time, the insulation ring blocks the internal heat from being transferred to the cooling cavity, so that the material in the injection pipe can be maintained in a stable temperature range when the material in the molding cavity is cooled, avoiding the solidification of the material in the injection pipe caused by the temperature drop, which causes solidification blockage in the injection pipe.

[0016] 3. The die-casting mold of the aluminum alloy shell of the automotive structural part, through the cooperation of the positioning groove and the guide column, when the movable mold and the fixed mold overlap to form the molding cavity, the guide column and the positioning groove are overlapped and engaged, thereby limiting the overlapping position between the movable mold and the fixed mold. In conjunction with the guide mechanism, the overlapping position between the fixed mold and the movable mold is accurate to prevent misalignment, which causes deformation of the molding cavity and large deviation of the molded shell.

[0017] Fourth, the die-casting mold of the aluminum alloy shell of the automotive structural part, through the recovery deformation of the elastic plate after the separation of the movable mold and the guidance of the guide column on the ejection plate during its movement, the ejection plate can be pushed out of the cooled and shaped shell under the push of the elastic plate. Under the restriction of the guide column, the shell is prevented from being pushed out at an angle, resulting in greater friction between the cavity plate and the shell, which makes the ejection obstructed.

[0018] 5. The die-casting mold for the aluminum alloy shell of the automotive structural part introduces hot oil into the preheating cavity through a hot oil pipe, heating the molding cavity before injection to increase the temperature inside the cavity. This prevents the hot melt material from directly solidifying after entering the molding cavity due to the drop in temperature inside the molding cavity, accumulating at the inlet and causing blockage, making it impossible for subsequent materials to be smoothly introduced into the molding cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the external structure of a die-casting mold for an aluminum alloy housing of an automobile structural part according to the present invention;

[0020] Figure 2 This is a structural anatomical diagram of a die-casting mold for an aluminum alloy housing of an automobile structural part according to the present invention;

[0021] Figure 3 This is a schematic structural diagram of the guide mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the fixed mold structure of the present invention;

[0023] Figure 5 Schematic diagram of the movable mold structure of the present invention;

[0024] Figure 6 This is an anatomical diagram of the movable mold structure of the present invention;

[0025] Figure 7 This is a schematic structural diagram of the injection mechanism of the present invention;

[0026] Figure 8 This is a structural anatomical diagram of the injection mechanism of the present invention;

[0027] Figure 9 It is a partial structural anatomical diagram of the injection mechanism of the present invention.

[0028] Figure: 1, fixed mold; 2, movable mold; 3, movable mold plate; 4, injection mechanism; 5, guide mechanism; 6, preheating mechanism; 7, fixed mold base; 11, cavity plate; 12, guide column; 13, elastic plate; 14, bottom block; 15, pressure block; 16, ejector plate; 21, ejector module; 22, cold water pipe; 23, positioning groove; 24, cooling cavity; 25, inclined guide plate; 26, bottom ring; 27, fixed ring; 401, injection pipe ; 402, connecting ring; 403, water retaining plate; 404, fixing cylinder; 405, insulation ring; 406, groove ring; 407, connecting rod; 408, connecting column; 409, spring; 410, baffle; 411, arc groove ring; 412, material retaining column; 413, cavity cylinder; 414, bottom column; 51, guide rod; 52, limiting block; 53, retaining ring; 61, bottom cavity plate; 62, top cavity plate; 63, hot oil pipe. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0030] The first embodiment, as Figures 1 to 2 and Figures 7 to 9 As shown, the present invention provides a technical solution: a die-casting mold for an aluminum alloy housing of an automobile structural part, comprising:

[0031] The fixed mold 1 has an outer groove formed by a shell, and a preheating mechanism 6 is fixedly installed at the bottom of the fixed mold 1, and a fixed mold base 7 is fixedly installed at the bottom of the preheating mechanism 6;

[0032] The movable mold 2 is used to cooperate with the fixed mold to form a forming cavity of the aluminum alloy shell, and the movable mold 2 is located above the fixed mold 1, and a movable platen 3 is fixedly installed on the top of the movable mold 2;

[0033] An injection mechanism 4, which provides an introduction path for the aluminum alloy hot melt material and is fixedly installed at the center of the inner wall of the movable mold 2;

[0034] The guide mechanism 5 is used for guiding the path of the reciprocating motion between the movable mold 2 and the fixed mold 1, and the guide mechanism 5 is fixedly installed on the top of the fixed mold base 7;

[0035] Among them, the injection mechanism 4 includes an injection tube 401, the bottom end of the injection tube 401 passes through the movable mold 2 and is connected to the molding cavity, and a connecting ring 402 is fixedly installed on the outer side of the injection tube 401, and the injection tube 401 is fixedly installed at the center position of the inner wall of the movable mold 2 through the connecting ring 402, and the inner wall of the injection tube 401 is fixedly connected with a groove ring 406, and a connecting rod 407 is fixedly installed at the center position of the bottom of the groove ring 406, and a blocking column 412 is fixedly installed on the outer side of the connecting rod 407. The outer side of the blocking column 412 is an inclined surface, and a bottom column 414 is fixedly installed on the bottom of the connecting rod 407. A cavity tube 413 is slidably installed on the inner wall of the injection tube 401, and the inner wall of the cavity tube 413 is adapted to the outer side of the blocking column 412. The material is injected through the injection pipe 401, so that the material flows downward along the inner wall of the injection pipe 401, and the material impacts the arc groove ring 411. The impact force is transmitted to the baffle 410 through the cavity 413, so that the baffle 410 is transmitted to the spring 409 through the connecting column 408 and the water retaining plate 403, so that the spring 409 is deformed under the injection pressure, so that the baffle 410 and the cavity 413 move downward, and the gap between the cavity 413 and the material retaining column 412 is opened. At the same time, the gap between the baffle 410 and the bottom column 414 is opened, so that the injected material flows into the molding cavity along the gap. The top of the cavity 413 is fixedly installed with an arc groove ring 411, and the top of the arc groove ring 411 is provided with an arc groove. The outside of the injection pipe 401 is fixedly installed with an insulation ring 405.

[0036] The outer side of the bottom column 414 is an arc-shaped inclined surface, and a baffle 410 is slidably installed on the bottom of the inner wall of the injection tube 401. The inner wall of the baffle 410 is adapted to the outer side of the bottom column 414, and convex plates are provided on both sides of the baffle 410, and the tops of the convex plates are fixedly installed with connecting columns 408. The top of the connecting column 408 is fixedly connected to the water retaining plate 403, and the outer side of the water retaining plate 403 is slidably installed with a fixed cylinder 404. After the molding cavity is filled, the injection is stopped to make the pressure disappear, and the spring 409 restores the deformation, so that the gap between the cavity cylinder 413 and the material retaining column 412 and the gap between the baffle 410 and the bottom column 414 are closed, and the material in the molding cavity is separated from the material in the injection tube 401. The bottom end of the fixed cylinder 404 is fixedly connected to the inner wall of the movable mold 2, and the bottom of the water retaining plate 403 is fixedly installed with a spring 409.

[0037] The second embodiment, based on the first embodiment, see Figures 5 and 6As shown, the movable mold 2 includes a top module 21, a protrusion is provided at the bottom center of the top module 21, and the protrusion of the top module 21 cooperates with the groove of the fixed mold 1 to form a molding cavity, and a cooling cavity 24 is provided on the inner wall of the top module 21. The bottom of the inner wall of the cooling cavity 24 of the top module 21 is fixedly connected to the bottom of the fixed cylinder 404. Cold water is injected into the cooling cavity 24 through one of the cold water pipes 22 through the cooling water pipe, so that the cold water is transferred to the material in the molding cavity through the top module 21, so that the material temperature is reduced and solidified, and the material is shaped. A fixing ring 27 is fixedly installed on the top of the inner wall of the cooling cavity 24, and a bottom ring 26 is rotatably installed on the bottom of the fixing ring 27. An inclined guide plate 25 is fixedly installed at the bottom of the bottom ring 26, and the inclined guide plate 25 is evenly installed along the center position of the bottom ring 26. A cold water pipe 22 is fixedly installed on the inner wall of the top module 21. After the cooling water enters the cooling cavity 24, the water flow hits the inclined guide plate 25. At the same time, when the water flow is injected too fast, the water flow is transmitted to the bottom ring 26 through the inclined guide plate 25, causing the bottom ring 26 to rotate at the bottom of the fixed ring 27. Then the cooling water absorbs heat and is discharged by another cold water pipe 22. The cold water pipe 22 is symmetrically installed along the center position of the axis of the top module 21, and the bottom end of the cold water pipe 22 is connected to the cooling cavity 24. Positioning grooves 23 are opened on both sides of the bottom of the top module 21.

[0038] The third embodiment, based on the first and second embodiments, see Figures 3 and 4 As shown, the fixed mold 1 includes a cavity plate 11, a groove is provided at the center of the top of the cavity plate 11, and the groove of the cavity plate 11 cooperates with the protrusion of the top module 21 to form a molding cavity, a top groove is provided in the groove of the cavity plate 11, and a top plate 16 is slidably installed in the top groove of the cavity plate 11. At the same time, after the fixed mold 1 and the movable mold 2 are separated, the clamping between the pressure block 15 and the bottom block 14 is released, so that the pressure on the elastic plate 13 disappears. After the pressure disappears, the elastic plate 13 recovers its deformation and drives the top plate 16 to move upward. The bottom blocks 14 are fixedly installed on both sides of the top plate 16, and the top of the bottom block 14 is clamped with the pressure block 15. The opposite surface of the pressure block 15 is aligned with the top module 21. It is fixedly connected on the outside, and sliding holes are opened on both sides of the top of the ejector plate 16 near the bottom block 14, and guide columns 12 are slidably installed at the sliding holes of the ejector plate 16. The bottom of the guide column 12 is fixedly connected to the inner wall of the cavity plate 11, and the bottom of the cavity plate 11 is fixedly installed on both sides adjacent to the bottom block 14. Elastic plates 13 are fixedly installed during the upward movement of the ejector plate 16. The upward movement path of the ejector plate 16 is limited by the guide column 12. During the upward movement of the ejector plate 16, the shell formed inside the groove of the cavity plate 11 is ejected upward, and the bottom end of the elastic plate 13 is fixedly connected to the inner wall of the cavity plate 11, and the elastic plate 13 is symmetrically installed along the center position of the axis of the cavity plate 11.

[0039] The guide mechanism 5 includes a guide rod 51, the bottom end of the guide rod 51 is fixedly connected to the top of the fixed die seat 7, and the guide rod 51 is symmetrically installed along the center position of the axis of the fixed die seat 7, and grooves are evenly provided on the outside of the guide rod 51, and a limiting block 52 is fixedly installed on the top of the guide rod 51, and a snap ring 53 is slidably installed on the outside of the guide rod 51, and a protrusion is provided on the inner wall of the snap ring 53. After the material in the molding cavity is die-cast, the die-casting equipment drives the movable mold 2 upward through the movable mold plate 3 to open the molding cavity, and the top module 21 drives the snap ring 53 so that the protrusion on the inner wall of the snap ring 53 slides along the groove on the outside of the guide rod 51. With the cooperation of the snap ring 53 and the guide rod 51, the fixed mold 1 and the movable mold 2 are separated. At the same time, the distance between the movable mold 2 and the fixed mold 1 is limited by the limiting block 52, and the protrusion of the snap ring 53 is adapted to the groove of the guide rod 51.

[0040] The preheating mechanism 6 includes a top cavity plate 62 and a bottom cavity plate 61, and a preheating cavity is formed between the top cavity plate 62 and the bottom cavity plate 61. The top of the top cavity plate 62 is fixedly connected to the bottom of the cavity plate 11, and the bottom of the bottom cavity plate 61 is fixedly connected to the top of the fixed mold seat 7. After the worker takes out the molded shell, the die-casting equipment controls the movable mold 2 and the fixed mold 1 to overlap again, so that hot oil is introduced into the preheating cavity between the bottom cavity plate 61 and the top cavity plate 62 through the hot oil pipe 63, and heat is transferred to the fixed mold 1 through the top cavity plate 62, so that the temperature in the molding cavity increases, and hot oil pipes 63 are fixedly connected to both sides of the bottom cavity plate 61, and the hot oil pipes 63 are connected to the preheating cavity.

[0041] During use, workers install the mold in the die-casting equipment, connect the material pipe with the injection mechanism 4, and connect the hot oil pipeline and the cold water pipeline with the preheating mechanism 6 and the movable mold 2 respectively, and connect the fixed mold base 7 and the movable mold plate 3 to the die-casting equipment. The die-casting equipment controls the movable mold 2 according to the restriction of the guide mechanism 5, so that the movable mold 2 and the fixed mold 1 are reciprocated and overlapped and separated. During die-casting, the movable mold 2 overlaps with the fixed mold 1 to form a molding cavity. The material is injected into the molding cavity through the injection mechanism 4, and the hot melt material is cooled and shaped to complete the die-casting molding.

[0042] When the hot melt material is injected into the molding cavity through the injection mechanism 4, the material is injected through the injection pipe 401, causing the material to flow downward along the inner wall of the injection pipe 401, causing the material to impact the arc groove ring 411, and the impact force is transmitted to the baffle 410 through the cavity tube 413, so that the baffle 410 is transmitted to the spring 409 through the connecting column 408 and the water retaining plate 403, causing the spring 409 to deform under the injection pressure, causing the baffle 410 and the cavity tube 413 to move downward, opening the gap between the cavity tube 413 and the material retaining column 412, and at the same time opening the gap between the baffle 410 and the bottom column 414, so that the injected material flows into the molding cavity along the gap until the molding cavity is filled, and then the injection is stopped to make the pressure disappear, and the spring 409 recovers its deformation, so that the gap between the cavity tube 413 and the material retaining column 412 and the gap between the baffle 410 and the bottom column 414 are closed, thereby isolating and separating the material in the molding cavity from the material in the injection pipe 401.

[0043] After the injection is completed, cold water is injected into the cooling cavity 24 through one of the cold water pipes 22 through the cooling water pipe, so that the cold water is transferred to the material in the molding cavity through the top module 21, so that the material temperature is reduced and solidified, and the material is shaped. At the same time, after the cooling water enters the cooling cavity 24, the water flow hits the inclined guide plate 25. At the same time, when the water flow is injected too fast, the water flow is transferred to the bottom ring 26 through the inclined guide plate 25, causing the bottom ring 26 to rotate at the bottom of the fixed ring 27. Then the cooling water absorbs heat and is discharged from the other cold water pipe 22.

[0044] After the material in the molding cavity is die-cast, the die-casting equipment drives the movable mold 2 upward through the movable mold plate 3 to open the molding cavity. The top module 21 drives the retaining ring 53 to make the protrusion on the inner wall of the retaining ring 53 slide along the groove on the outside of the guide rod 51. With the cooperation of the retaining ring 53 and the guide rod 51, the fixed mold 1 and the movable mold 2 are separated, and the distance between the movable mold 2 and the fixed mold 1 is limited by the limiting block 52.

[0045] At the same time, after the fixed mold 1 and the movable mold 2 are separated, the clamping connection between the pressure block 15 and the bottom block 14 is released, so that the pressure on the elastic plate 13 disappears. After the pressure disappears, the elastic plate 13 recovers its deformation and drives the ejection plate 16 to move upward. During the upward movement of the ejection plate 16, the upward movement path of the ejection plate 16 is limited by the guide column 12. During the upward movement of the ejection plate 16, the shell formed inside the groove of the cavity plate 11 is ejected upward.

[0046] After the worker takes out the molded shell, the die-casting equipment controls the movable mold 2 and the fixed mold 1 to overlap again, so that the hot oil is introduced into the preheating cavity between the bottom cavity plate 61 and the top cavity plate 62 through the hot oil pipe 63, and the heat is transferred to the fixed mold 1 through the top cavity plate 62, so that the temperature in the molding cavity increases.

[0047] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A die-casting die for an aluminum alloy housing of an automobile structural part, characterized in that: include: A fixed mold (1), the fixed mold (1) having an outer groove formed by a shell, and a preheating mechanism (6) is fixedly installed on the bottom of the fixed mold (1), and a fixed mold base (7) is fixedly installed on the bottom of the preheating mechanism (6); A movable mold (2) is used to cooperate with the fixed mold to form a forming cavity of the aluminum alloy shell, and the movable mold (2) is located above the fixed mold (1), and a movable mold plate (3) is fixedly installed on the top of the movable mold (2); An injection mechanism (4), which provides an introduction path for the aluminum alloy hot melt material, and the injection mechanism (4) is fixedly installed at the center position of the inner wall of the movable mold (2); A guide mechanism (5), the guide mechanism (5) is used for guiding the path during the reciprocating motion between the movable mold (2) and the fixed mold (1), and the guide mechanism (5) is fixedly mounted on the top of the fixed mold base (7); The injection mechanism (4) includes an injection tube (401), the bottom end of the injection tube (401) passes through the movable mold (2) and is connected to the molding cavity, and a connecting ring (402) is fixedly installed on the outside of the injection tube (401), the injection tube (401) is fixedly installed at the center position of the inner wall of the movable mold (2) through the connecting ring (402), and the inner wall of the injection tube (401) is fixedly connected to a groove ring (406), the center position of the bottom of the groove ring (406) is fixedly installed with a connecting rod (407), and the outer side of the connecting rod (407) is fixedly installed with a material blocking column. (412), the outer side of the material-blocking column (412) is an inclined surface, and the outer diameter of the material-blocking column (412) decreases from top to bottom, the bottom of the connecting rod (407) is fixedly mounted with a bottom column (414), the inner wall of the injection tube (401) is slidably mounted with a cavity tube (413), and the inner wall of the cavity tube (413) is adapted to the outer side of the material-blocking column (412), the top of the cavity tube (413) is fixedly mounted with an arc groove ring (411), the top of the arc groove ring (411) is provided with an arc groove, and the outer side of the injection tube (401) is fixedly mounted with a heat-insulating ring (405); The outer side of the bottom column (414) is an arc-shaped inclined surface, and a baffle (410) is slidably installed at the bottom of the inner wall of the injection tube (401), the inner wall of the baffle (410) is adapted to the outer side of the bottom column (414), and convex plates are provided on both sides of the baffle (410), and the tops of the convex plates are fixedly installed with connecting columns (408), and the tops of the connecting columns (408) are fixedly connected to the water retaining plate (403); A fixed cylinder (404) is slidably mounted on the outer side of the water retaining plate (403), the bottom end of the fixed cylinder (404) is fixedly connected to the inner wall of the movable mold (2), and a spring (409) is fixedly mounted on the bottom of the water retaining plate (403); The material is injected through the injection pipe (401), causing the material to flow downward along the inner wall of the injection pipe (401), causing the material to impact the arc groove ring (411), and the impact force is transmitted to the baffle (410) through the cavity (413), causing the baffle (410) to be transmitted to the spring (409) through the connecting column (408) and the water retaining plate (403), causing the spring (409) to deform under the injection pressure, causing the baffle (410) and the cavity (413) to move downward, opening the cavity (413) and the baffle. The gap between the material column (412) is opened, and the gap between the baffle (410) and the bottom column (414) is opened at the same time, so that the injected material flows into the molding cavity along the gap until the molding cavity is filled, and the injection is stopped to make the pressure disappear, and the spring (409) recovers its deformation, so that the gap between the cavity tube (413) and the material blocking column (412) and the gap between the baffle (410) and the bottom column (414) are closed, and the material in the molding cavity is blocked and separated from the material in the injection tube (401).

2. The die-casting mold for an aluminum alloy housing of an automobile structural part according to claim 1, characterized in that: The movable mold (2) includes a top module (21), a protrusion is provided at the center position of the bottom of the top module (21), and the protrusion of the top module (21) cooperates with the groove of the fixed mold (1) to form a molding cavity, and a cooling cavity (24) is provided on the inner wall of the top module (21), and the bottom of the inner wall of the cooling cavity (24) of the top module (21) is fixedly connected to the bottom of the fixed cylinder (404).

3. The die-casting mold for an aluminum alloy housing of an automobile structural part according to claim 2, characterized in that: A fixing ring (27) is fixedly mounted on the top of the inner wall of the cooling cavity (24), a bottom ring (26) is rotatably mounted on the bottom of the fixing ring (27), an inclined guide plate (25) is fixedly mounted on the bottom of the bottom ring (26), and the inclined guide plate (25) is evenly mounted along the center of the bottom ring (26).

4. The die-casting mold for an aluminum alloy housing of an automobile structural part according to claim 3, characterized in that: A cold water pipe (22) is fixedly mounted on the inner wall of the top module (21), the cold water pipe (22) being symmetrically mounted along the center of the axis of the top module (21), and the bottom end of the cold water pipe (22) is connected to the cooling cavity (24), and positioning grooves (23) are provided on both sides of the bottom of the top module (21).

5. The die-casting mold for an aluminum alloy housing of an automobile structural part according to claim 1, characterized in that: The fixed mold (1) includes a cavity plate (11), a center position of the top of the cavity plate (11) is provided with a groove, and the groove of the cavity plate (11) cooperates with the protrusion of the top module (21) to form a molding cavity, a top groove is provided in the groove of the cavity plate (11), a top material plate (16) is slidably installed in the top groove of the cavity plate (11), bottom blocks (14) are fixedly installed on both sides of the top material plate (16), a pressure block (15) is clamped on the top of the bottom block (14), and the opposite surface of the pressure block (15) is fixedly connected to the outer side of the top module (21).

6. The die-casting mold for an aluminum alloy housing of an automobile structural part according to claim 5, characterized in that: The top of the ejector plate (16) is provided with sliding holes on both sides close to the bottom block (14), and a guide column (12) is slidably installed at the sliding hole of the ejector plate (16), the bottom of the guide column (12) is fixedly connected to the inner wall of the cavity plate (11), and the bottom of the cavity plate (11) is fixedly installed with an elastic plate (13) on both sides adjacent to the bottom block (14), the bottom end of the elastic plate (13) is fixedly connected to the inner wall of the cavity plate (11), and the elastic plate (13) is symmetrically installed along the center position of the axis of the cavity plate (11).

7. The die-casting mold for an aluminum alloy housing of an automobile structural part according to claim 1, characterized in that: The guide mechanism (5) comprises a guide rod (51), the bottom end of the guide rod (51) is fixedly connected to the top of the fixed die seat (7), and the guide rod (51) is symmetrically installed along the center position of the axis of the fixed die seat (7), and the outer side of the guide rod (51) is evenly provided with grooves, and the top end of the guide rod (51) is fixedly installed with a limiting block (52), and the outer side of the guide rod (51) is slidably installed with a snap ring (53), the inner wall of the snap ring (53) is provided with a protrusion, and the protrusion of the snap ring (53) is adapted to the groove of the guide rod (51).

8. The die-casting mold for an aluminum alloy housing of an automobile structural part according to claim 1, characterized in that: The preheating mechanism (6) includes a top cavity plate (62) and a bottom cavity plate (61), wherein a preheating cavity is formed between the top cavity plate (62) and the bottom cavity plate (61), the top of the top cavity plate (62) is fixedly connected to the bottom of the cavity plate (11), the bottom of the bottom cavity plate (61) is fixedly connected to the top of the fixed mold base (7), and hot oil pipes (63) are fixedly connected to both sides of the bottom cavity plate (61), and the hot oil pipes (63) are connected to the preheating cavity.

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