Aluminum product integrated die-casting forming equipment

Abstract

The invention relates to the technical field of die-casting dies, in particular to aluminum product integrated die-casting forming equipment which comprises a fixed die, a movable die, guide columns, a mold core, a mold cavity, a boss and a spray head, the guide columns are symmetrically arranged on the fixed die, the movable die and the fixed die are arranged in parallel, the movable die is slidably connected with the fixed die through the guide columns, and the mold core and the mold cavity are arranged on the adjacent faces of the fixed die and the movable die. The mold core and the mold cavity are matched to form a casting cavity, a groove is formed in the fixed mold, a swing assembly is arranged in the movable mold, bosses are arranged on the movable mold, the swing assembly is connected with the bosses, the bosses are distributed along the outer contour of the mold core or the mold cavity, the bosses are matched with the groove, extension assemblies are arranged in the bosses, spray heads are installed in the bosses, and the extension assemblies are connected with the spray heads. According to the mold spraying device, the swing assembly is used for driving the boss to rotate through the mold closing force between the movable mold and the fixed mold, meanwhile, the extension assembly is used for driving the spraying head to stretch out of the boss through the mold closing force between the movable mold and the fixed mold, and therefore the spraying agent is evenly sprayed to the surface of the mold.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting molds, and specifically to an integrated die-casting forming device for aluminum products. Background Art

[0002] Die casting is a metal casting process in which liquid or semi-liquid metal is injected into the die-casting mold cavity at high pressure and rapidly solidified under pressure to obtain castings with complex shapes and precise dimensions. In the production of die-castings, key steps such as heat treatment of materials, preheating of the mold, spraying of release agent, mold closing, pouring, injection, pressure holding and solidification, and mold opening and demolding are required. Among them, spraying the release agent can form an isolation film between the mold and the casting to reduce the adhesion between the casting and the mold. This isolation film has a low surface energy and can prevent direct contact between the molten metal and the mold surface. When the casting solidifies, due to the presence of the isolation film, the casting can be easily removed from the mold.

[0003] Due to the complex shape and structure of some parts during the production process, it is difficult for the atomizing nozzle to spray the release agent on all parts of the inner wall of the mold core, which easily leads to insufficient separation of the product from the mold, and also causes a decline in the surface quality of the casting, such as scratches and increased roughness, and increases the risk of mold damage. In response, a solution is provided in the prior art. For example, patent application number CN202110586469.8 provides a spraying system for the inner wall of the mold of a die-casting device. The spraying system for the inner wall of the mold of the die-casting device is provided in this patent. The rotor includes a support plate located above the moving mold core and the stationary mold core. A connecting plate is arranged to be lifted and lowered on one side of the support plate close to the moving mold core. A spraying ring for spraying the inner wall of the mold is connected to one side of the connecting plate close to the moving mold core. The diameter of the spraying ring is adjustable. A telescoping mechanism for adjusting the diameter of the spraying ring is arranged on the connecting plate. The support plate is used to support the spraying ring between the moving mold core and the stationary mold core. The connecting plate is used to lift and connect the spraying ring to the support plate. Open the moving mold core and the stationary mold core, drive the spraying ring to slide on the support plate in the direction of the gap between the moving mold core and the stationary mold core, so that the spraying ring is located between the moving mold core and the stationary mold core. Start the telescoping mechanism, and the telescoping mechanism drives the spraying ring to adjust the diameter size, reducing the distance between the spraying ring and the inner wall of the mold, so that the release agent sprayed from the spraying ring can adhere to the inner wall of the mold. While the spraying ring sprays the release agent, adjust the height of the spraying ring between the moving mold core and the stationary mold core, so that the spraying ring can spray all parts of the inner wall of the mold. However, the expansion mechanism in the current technology uses motors, lasers and motors in the equipment, which are relatively expensive, resulting in a high production cost of the equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated die-casting forming device for aluminum products, so as to solve the problem of relatively high manufacturing cost of the mold release agent spraying device in die-casting production in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An integrated die-casting forming device for aluminum products includes a fixed mold, a moving mold, guide columns, a core, a cavity, a boss and a spray head. The guide columns are symmetrically arranged on the fixed mold. The moving mold is arranged parallel to the fixed mold. The moving mold is slidably connected to the fixed mold through the guide columns. The core and the cavity are arranged on the adjacent surfaces of the fixed mold and the moving mold. The core and the cavity cooperate to form a casting cavity. A liquid delivery pipe is arranged in the moving mold.

[0007] Specifically, a groove is arranged on the fixed mold. A swing assembly is arranged in the moving mold. A plurality of bosses are arranged on the moving mold. The swing assembly is connected to the bosses. The bosses are distributed along the outer contour of the core or the cavity. The bosses cooperate with the groove. An extension assembly is arranged in the bosses. A spray head is installed in the bosses. The extension assembly is connected to the spray head. The spray head is connected to the liquid delivery pipe. The direction of the spray head points to the core and the cavity. The swing assembly is used to drive the bosses to rotate by the clamping force between the moving mold and the fixed mold. The extension assembly is used to drive the spray head to extend out of the bosses by the clamping force between the moving mold and the fixed mold.

[0008] In the prior art, a motor is required to drive a robotic arm and a laser is used for measurement to spray the mold release agent on the mold. The manufacturing cost of this mold release agent spraying device is relatively high. When the previous casting is demolded from the mold, at this time, the moving mold is driven to move towards the fixed mold. Under the action of the guide columns, the moving mold and the fixed mold cooperate. At this time, the core and the cavity cooperate to form a casting cavity. The casting cavity is used to shape the subsequently injected aluminum liquid. The force that pushes the moving mold to move towards the fixed mold and cooperate during the process is the clamping force. Before the moving mold and the fixed mold come into contact, at this time, the extension assembly in the bosses converts the clamping force and drives the spray head in the bosses to extend. The extending direction of the spray head points to the direction where the core and the cavity are located. At this time, the external mold release agent comes to the spray head through the liquid delivery pipe, and the mold release agent is sprayed on the surfaces of the core and the cavity through the spray head. At this time, the moving mold continues to approach the fixed mold. At this time, the swing assembly converts the clamping force and drives the bosses to rotate, thereby driving the spray head to swing, so that the sprayed mold release agent fully adheres to each corner. As the moving mold continues to move forward, the bosses come into the groove, and the core and the cavity cooperate. Subsequently, aluminum liquid is injected into the casting cavity formed by the cooperation of the core and the cavity. By using the clamping force when the moving mold and the fixed mold cooperate to drive the spray head to the position where the cavity and the core are located and swing the spray head to spray the mold release agent, the equipment investment of the motor, robotic arm and laser measurement is saved, thereby reducing the cost of the spraying device.

[0009] Preferably, the extension component includes a push plate and a first guide block. The boss is axially provided with a sliding groove, in which the push plate is slidably installed. The push plate is provided with a first guide groove, which includes a constricted section, a spraying section, and a telescopic section. The spraying section and the constricted section are horizontally arranged, the telescopic section is symmetrically inclined, the lowest point of the telescopic section is at the same horizontal height as the constricted section, the telescopic section near the groove side is connected to the constricted section, and the highest point of the telescopic section is at the same horizontal height as the constricted section. A magnet is provided inside one end of the push plate near the groove and is connected to the end face of the groove, and the other end is slidably installed in the sliding groove. A chute is provided in the boss, which points to the core and the cavity. A communication groove is provided in the boss, and the chute is communicated with the sliding groove through the communication groove. A nozzle is slidably installed in the chute, and a first guide block is provided on the side wall of the nozzle. The first guide block penetrates through the communication groove and is slidably connected to the first guide groove.

[0010] It is easy to understand that when the nozzle has not extended out of the boss, the first guide block is at the highest point in the telescopic section. Since one end of the push plate is slidably installed in the sliding groove and the other end is connected to the groove, when the moving mold moves towards the fixed mold, the push plate near the groove end contacts the groove on the fixed mold. As the moving mold moves, the push plate slides in the sliding groove. During this process, the first guide block on the push plate slides from the highest point of the telescopic section in the first guide groove towards the spraying groove. Under the restriction of the sliding groove in the boss, the first guide block drives the nozzle connected to it to slide in the chute through the communication groove. Since the chute points to the core and the cavity, at this time, the nozzle extends out of the boss and moves towards the core and the cavity, preparing for the release agent spraying. By the cooperation of the first guide block on the push plate and the telescopic section on the first guide groove of the nozzle, the closing force when the moving mold and the fixed mold cooperate is used to drive the nozzle to slide in the sliding groove in the boss, and then extend out of the boss, eliminating the need to install a detection device to detect the positions of the cavity and the core and a driving device to drive the nozzle to the positions where the cavity and the core are located, reducing the cost of the spraying equipment.

[0011] Furthermore, after the nozzle extends out of the boss, at this time, the first guide block is located within the spraying section. At this time, the nozzle sprays the mold release agent on the core and the cavity. As the moving mold continues to advance, the push plate is squeezed. When the first guide block moves to the other end of the spraying section, the spraying is completed at this time. As the moving mold continues to move, at this time, the first guide block comes into the telescopic groove on the other side and moves towards the high point of the telescopic groove. Due to the inclined design of the telescopic chute, when the first guide block slides, it drives the nozzle to retract into the boss. As the moving mold continues to move, at this time, the first guide block comes into the retraction section until the moving mold and the fixed mold complete the cooperation and the first guide block stops moving. By setting the spraying section, the spraying time of the nozzle is reserved, and at the same time, the interference between the push plate and the first guide block during the movement of the push plate is avoided, thereby ensuring the normal operation of the equipment. Through the inclined design of the first guide block and the telescopic section, after the mold release agent spraying is completed, the nozzle is retracted into the boss by using the clamping force, avoiding the interference between the nozzle and the moving mold and the fixed mold during the clamping of the moving mold and the fixed mold, thereby ensuring the normal operation of the equipment.

[0012] Furthermore, when demolding is to be carried out after die casting is completed, at this time, the moving mold and the fixed mold are separated. Since a magnet is provided inside the push plate near one end of the groove, at this time, the magnet adsorbs on the fixed mold. As the moving mold moves, at this time, the push plate slides in the chute, and at the same time, the first guide block slides in the first guide groove. When the first guide block slides to the connection between the retraction section and the telescopic section, the boss disengages from the groove. As the moving mold continues to move, the first guide block moves from the highest point of the telescopic section on the side close to the groove through the spraying section to the highest point of the telescopic section on the other side. At this time, the first guide block cannot move any further, but the moving mold is still moving. At this time, the power of the moving mold is converted into the pulling force of the push plate through the first guide block. When the pulling force of the push plate is greater than the suction force of the magnet, the push plate separates from the fixed mold. Through the setting of the retraction groove, the nozzle is prevented from protruding in advance and colliding with the inner wall of the groove, resulting in damage to the equipment. At the same time, through the design of the magnet on the push plate, when the fixed mold and the moving mold are separated, the first guide block is reset by using the power of the moving mold, preparing for the next spraying of the mold release agent, thereby improving the efficiency of the entire production process.

[0013] Preferably, a buffer block is provided inside the boss. The horizontal cross-section of the buffer block is in a horn shape. The small-diameter end of the buffer block points to the chute. The two side edges of the horizontal cross-section of the buffer block extend through the axis of the chute. The buffer block is made of rubber, and a communication groove is provided inside the buffer block.

[0014] During the mold closing and mold opening processes, the ejector plate slides within the sliding groove. At this time, relative movement occurs between the ejector plate and the boss. When the first guide block moves to the end of the first guide groove on the ejector plate, due to the limitation of the communication groove, at this time, under the action of the ejector plate and the communication groove, the first guide block generates shear stress at the connection between the ejector plate and the communication groove. The repeated shear force will cause fatigue fracture of the first guide block. Therefore, the communication groove is designed within the buffer block. When the first guide block moves to the end of the first guide groove on the ejector plate, since the buffer block is made of rubber and has the characteristics of high elasticity and high resistance, at this time, energy is absorbed through the elastic deformation of the buffer block. At the same time, when the buffer block deforms, the first guide block deflects around the axis of the sliding groove and is parallel to the two side edges of the horizontal section of the buffer block. At this time, the contact area between the buffer block and the first guide block is the largest. Through the setting of the material of the buffer block, when the first guide block is subjected to shear force, the buffer block undergoes elastic deformation, absorbing and buffering a part of the shear force. At the same time, through the setting of the shape of the buffer block, when the buffer block deforms, the supporting area of the buffer block for the first guide block is increased. At the same time, the deflection of the first guide block increases the cross-sectional area of the first guide block in the direction of the shear force. The increase in the cross-sectional area causes an increase in the shear area of the first guide block, reducing the shear stress on the first guide block and avoiding the fatigue fracture of the first guide block caused by the shear force, thereby improving the overall service life of the equipment.

[0015] Preferably, the swing assembly includes a second guide block. The second guide block is arranged on the ejector plate, and the second guide block is located on the ejector plate on the side close to the outer wall of the boss. A rotating hole is arranged on the moving mold, and the boss is rotatably installed in the rotating hole. A second guide groove is formed on the inner wall of the rotating hole. The second guide groove includes a straight section and a rotating section. The straight section is straight and horizontally arranged. The trajectory of the rotating section is wavy. The length of the rotating section on the horizontal plane is equal to the length of the spraying section. Both ends of the rotating section are connected with a straight section, and the connection point is located at the center point in the vertical direction of the rotating section. The second guide block is slidably connected with the second guide groove.

[0016] During the spraying process, if the spray head remains fixed in position for spraying, the coating material will concentrate in one area, easily causing the mold part to not be sprayed with the release agent. As a result, during the demolding process, the friction force distribution between the mold and the casting will be uneven, making demolding difficult. It will also cause problems such as surface scratches, damage, and deterioration of the appearance quality of the casting. Therefore, a rotating hole is opened on the moving mold, and a convex platform is rotatably installed in the rotating hole. At the same time, one end of the push plate is slidably installed in the chute, and the other end is connected to the groove. When the moving mold moves towards the fixed mold, the push plate near the groove end contacts the groove on the fixed mold. As the moving mold moves, the push plate slides in the chute, driving the second guide block to move simultaneously. At this time, the second guide block slides in the second guide groove. When the first guide block slides in the spraying section, the second guide block slides in the rotating section at this time. Since the trajectory of the rotating section is wavy, under the action of the rotating section and the second guide block, the convex platform reciprocally twists in the rotating hole, driving the spray head to reciprocally swing. Through the cooperation of the second guide block and the rotating section, the spray head swings back and forth when spraying the release agent, avoiding the situation where part of the mold is not sprayed with the release agent, which would cause uneven friction force distribution between the mold and the casting during demolding, difficult demolding, and problems such as surface scratches, damage, and deterioration of the appearance quality of the casting, and ensuring the spraying range of the release agent.

[0017] Furthermore, when the first guide block slides in the retraction section and the telescopic section, the second guide block slides in the straight section at this time, and the position of the convex platform remains unchanged. Through the cooperation of the second guide block and the straight section, while ensuring the normal telescoping of the spray head, friction between the convex platform and the groove is avoided during mold opening.

[0018] Preferably, the spray head includes a liquid injection cavity and a nozzle. The liquid injection cavity is communicated with the infusion pipe. The lower end surface of the liquid injection cavity is rotatably connected to the upper end surface of the nozzle. A plurality of spray openings are evenly distributed on the nozzle. The horizontal projection of the spray openings is inclined, and the nozzle is made of a flexible material.

[0019] Since the swing of the boss is in the radial direction, there will be a problem of uneven spraying in the axial direction. In the manufacture of molds, many molds have complex shapes, such as those with deep cavities, blind holes, undercuts, and various curved surfaces. For these complex-shaped mold parts, it is difficult for the spray head to reciprocate and evenly spray the release agent into every corner, which will lead to uneven distribution of the friction force between the mold and the casting during the demolding process, making demolding difficult, and also causing problems such as surface scratches, breakage, and poor appearance quality of the casting. Therefore, the lower end surface of the liquid injection cavity is rotatably connected to the upper end surface of the nozzle. A plurality of spray holes are evenly distributed on the nozzle, and the horizontal projection of the spray holes is arranged obliquely. When the release agent comes into the spray head through the infusion pipe, it comes to the spray holes through the liquid injection cavity and the nozzle and is sprayed out from the spray holes. When the high-pressure release agent is sprayed out from the obliquely arranged spray holes, it will generate a reaction force on the nozzle. Since the spray holes are annularly arranged and inclined, the reaction forces generated by the release agent sprayed out from each spray hole will form a torque in the horizontal direction. The torque causes the nozzle to rotate around its central axis. By designing the spray holes, the spray head rotates. The rotation of the spray head makes the spraying range of the release agent form a circular or elliptical coverage area, thus increasing the spraying coverage area. At the same time, the rotating spray head can better adapt to the complex shape of the mold by changing the spraying angle, spraying the release agent into these inaccessible areas, avoiding the problems of uneven distribution of the friction force between the mold and the casting during the demolding process, difficult demolding, and also causing problems such as surface scratches, breakage, and poor appearance quality of the casting due to dead corners during spraying caused by the complex shape of the mold. Furthermore, it ensures that the entire mold surface can be covered by the release agent and improves the success rate of demolding.

[0020] Furthermore, since the nozzle is made of rubber material, it has good elasticity, flexibility, and good wear resistance. When the release agent comes to the nozzle and bulges outward under the internal pressure, it plays a role of pressure buffering through the flexible deformation of the nozzle, improving the service life of the spray head. At the same time, the surface of the nozzle is arc-shaped, and the spray holes on the vertical plane are arc-shapedly distributed. The arc-shaped arrangement of the spray holes is driven by the expansion of the nozzle, improving the spraying range of the release agent and adapting to the complex shape of the mold, avoiding dead corners during spraying due to the complex shape of the mold.

[0021] Preferably, an air duct is slidably installed in the spray head. An air pipe is provided in the moving mold. The air pipe is communicated with the air duct. The air duct penetrates through the liquid injection cavity and is rotatably connected to the nozzle. The lower end surface of the air duct is flush with the lower end surface of the nozzle. A baffle is provided at the connection between the liquid injection cavity and the nozzle. The baffle is provided with atomization holes. The small-diameter end of the atomization holes points to the nozzle. The lower end of the air duct is provided with ventilation holes. The air duct holes are communicated with the nozzle through the ventilation holes.

[0022] Since large droplets of the liquid release agent may accumulate locally on the mold surface, it is easy to form a coating with uneven thickness. Therefore, a baffle is provided at the connection between the liquid injection cavity and the nozzle. The baffle is provided with atomization holes, and the atomization holes are trapezoidal cylinders. The small-diameter end of the atomization hole points to the nozzle. When the release agent reaches the baffle and passes through the atomization holes, due to the pressure difference between the liquid injection cavity and the nozzle, and the design of the atomization hole shape, the release agent reaching the nozzle is atomized and flows out through the nozzle opening and uniformly adheres to the core and the cavity, avoiding the problem that the liquid release agent accumulates locally during spraying and is easy to form a coating with uneven thickness.

[0023] At the same time, the air passage holes are connected to the nozzle through the ventilation holes. When the air flow comes to the air passage tube through the air pipe and flows to the nozzle through the ventilation holes, the air flow carries the atomized release agent in the nozzle and flows out from the nozzle opening. The air flow is introduced into the nozzle through the ventilation holes, and the atomized release agent is blown out from the nozzle opening, which can further disperse the atomized small droplets. At the same time, the air flow imparts additional kinetic energy to the atomized release agent. When the droplets with a certain speed impact the sprayed surface, they can spread and adhere to the surface better, so that the release agent can be evenly distributed in all parts of the mold and improve the spraying effect of the release agent.

[0024] Preferably, a nozzle is provided on the lower end surface of the air passage tube. Guide vanes are evenly distributed in a ring in the nozzle. The guide vanes are inclined. The inclination angle of the guide vanes in the vertical plane projection is α, and 30° < α < 60°.

[0025] After the atomized release agent is ejected from the nozzle opening, part of the release agent will fall downward under the action of gravity and does not contact the core and the cavity, which will cause waste of the release agent. Therefore, guide vanes are evenly distributed in a ring in the nozzle on the lower end surface of the air passage tube. The guide vanes are inclined. When the air flow passes through the nozzle, due to the inclination of the guide vanes, the air flow will flow along the inclination direction of the guide vanes when passing through the guide vanes. The evenly distributed guide vanes in a ring can also make the air flow rotate, thereby driving the falling release agent and making it evenly adhere to the core and the cavity. Through the design of the guide vanes, the blown air is guided to form a cyclone, driving the falling release agent to evenly adhere to the core and the cavity, avoiding waste of the falling release agent, and thus reducing the production cost of the casting. The inclination angle of the guide vanes in the vertical plane projection is α. When the inclination angle α of the guide vanes is 45°, it can be compatible with different air flow rates and ensure the formation of the cyclone.

[0026] Furthermore, the setting of the air pipe can blow air on the casting when the moving mold and the fixed mold are separated, thereby reducing the temperature of the casting and at the same time being able to clean the debris remaining on the moving mold.

[0027] Preferably, the moving mold and the fixed mold are made of H13 steel. The distance between the convex platform and the edge of the casting cavity is β, and 10mm < β < 50mm.

[0028] Since the mold will bear high pressure during die casting, if the wall thickness of the mold is too thin, it cannot withstand this pressure, which may cause the mold to deform and make the castings unqualified. Therefore, the distance between the boss and the edge of the casting cavity is β. When the distance between the boss and the edge of the casting cavity is 40 mm, through the design of the boss position, while ensuring the strength of the mold, the displacement required by the nozzle is reduced, and the displacement of the nozzle is reduced, thereby reducing the size of the push plate and the boss, saving the mold cost. At the same time, through the design of the boss position, the generation of gaps in the mold is reduced, the integrity of the casting cavity is ensured, and the product size accuracy and the beauty of the casting are improved.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. Through the design of the extension component and the nozzle, the clamping force when the moving mold and the fixed mold are matched is transmitted through the cooperation of the first guide groove on the push plate and the first guide block on the nozzle, driving the nozzle to extend out of the boss. Then, the nozzle sprays the mold release agent. While ensuring that the nozzle sprays the mold release agent, the need to install a detection device and a driving device for driving is eliminated, reducing the cost of the spraying equipment. At the same time, through the design of the magnet on the push plate, when the fixed mold and the moving mold are separated, the first guide block is reset by using the power of the moving mold, preparing for the next spraying of the mold release agent, and improving the efficiency of the entire production process.

[0031] 2. Through the design of the swing component and the boss, the clamping force when the moving mold and the fixed mold are matched is transmitted through the cooperation of the second guide block and the rotating section, causing the nozzle to swing back and forth when spraying the mold release agent, avoiding that some parts of the mold are not sprayed with the mold release agent, making the spraying of the mold release agent uniform, and improving the success rate and integrity of demolding.

[0032] 3. Through the design of the nozzle and the air pipe, when the mold release agent passes through the atomization holes, the pressure difference on both sides of the atomization holes is used to atomize the mold release agent coming to the nozzle. At the same time, the air passage holes are connected to the nozzle through the ventilation holes, so that the air flow further disperses the atomized small droplets. At the same time, the air flow imparts additional kinetic energy to the atomized mold release agent, making it spread and adhere better on the surface when hitting the mold, so that the mold release agent can be evenly distributed on all parts of the mold, improving the spraying effect of the mold release agent. Description of the Drawings

[0033] Figure 1 is the overall structural schematic diagram of the integrated die-casting forming equipment for aluminum products of the present invention;

[0034] Figure 2 is the axial sectional view of the integrated die-casting forming equipment for aluminum products of the present invention;

[0035] Figure 3 is Figure 2 the partial enlarged view at A in

[0036] Figure 4It is a schematic structural diagram of a nozzle;

[0037] Figure 5 is Figure 4 a partial enlarged view of the position B in

[0038] Figure 6 a cross-sectional view in the vertical direction of the rotating hole;

[0039] Figure 7 is a schematic structural diagram of this ejector plate;

[0040] Figure 8 is an axonometric sectional view of the boss.

[0041] In the figure: 1, fixed mold; 11, core; 12, cavity; 13, casting cavity; 14, groove; 2, guide pillar; 3, moving mold; 31, boss; 32, sliding groove; 33, ejector plate; 34, sliding slot; 35, buffer block; 351, connecting groove; 36, first guide block; 37, first guide groove; 371, retracted section; 372, spraying section; 373, telescopic section; 374, magnet; 375, second guide block; 38, rotating hole; 39, second guide groove; 391, straight section; 392, rotating section; 4, nozzle; 41, liquid injection cavity; 42, nozzle; 421, spray port; 43, air pipe; 431, air nozzle; 432, guide piece; 44, baffle; 441, atomizing hole; 45, ventilation hole; 5, infusion pipe; 6, air duct pipe. Specific embodiments

[0042] Please refer to Figures 1 to 8 , the present invention provides an integrated die-casting forming device for aluminum products, and the technical solution is as follows:

[0043] An integrated die-casting forming device for aluminum products includes a fixed mold 1, a moving mold 3, guide pillars 2, a core 11, a cavity 12, a boss 31 and a nozzle 4. Guide pillars 2 are symmetrically arranged on the fixed mold 1. The moving mold 3 is arranged parallel to the fixed mold 1. The moving mold 3 is slidably connected to the fixed mold 1 through the guide pillars 2. A core 11 and a cavity 12 are arranged on the adjacent surfaces of the fixed mold 1 and the moving mold 3. The core 11 and the cavity 12 cooperate to form a casting cavity 13. An infusion pipe 5 is arranged in the moving mold 3. A groove 14 is arranged on the fixed mold 1. A swinging assembly is arranged in the moving mold 3. A plurality of bosses 31 are arranged on the moving mold 3. The swinging assembly is connected to the bosses 31. The bosses 31 are distributed along the outer contour of the core 11 or the cavity 12. The bosses 31 cooperate with the grooves 14. An extension assembly is arranged in the bosses 31. A nozzle 4 is installed in the bosses 31. The extension assembly is connected to the nozzle 4. The nozzle 4 is connected to the infusion pipe 5. The direction of the nozzle 4 points to the core 11 and the cavity 12. The swinging assembly is used to drive the bosses 31 to rotate by the clamping force between the moving mold 3 and the fixed mold 1. The extension assembly is used to drive the nozzle 4 to extend out of the bosses 31 by the clamping force between the moving mold 3 and the fixed mold 1. The moving mold 3 and the fixed mold 1 are made of H13 steel. The distance β between the boss 31 and the edge of the casting cavity 13 is 40 mm.

[0044] Please refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8 For the extension component, it includes a push plate 33 and a first guide block 36. The boss 31 is axially provided with a sliding groove 34. The push plate 33 is slidably installed in the sliding groove 34. The push plate 33 is provided with a first guide groove 37. The first guide groove 37 includes a constricted section 371, a spraying section 372 and a telescopic section 373. The spraying section 372 and the constricted section 371 are horizontally arranged. The telescopic section 373 is symmetrically inclined. The lowest point of the telescopic section 373 is at the same horizontal height as the constricted section 371. The telescopic section 373 close to one side of the groove 14 is communicated with the constricted section 371, and the highest point of the telescopic section 373 is at the same horizontal height as the constricted section 371. A magnet 374 is provided inside one end of the push plate 33 close to the groove 14 and is connected to the end face of the groove 14. The other end is slidably installed in the sliding groove 34. A chute 32 is provided inside the boss 31. The chute 32 points to the core 11 and the cavity 12. A communication groove 351 is provided inside the boss 31. The chute 32 is communicated with the sliding groove 34 through the communication groove 351. A nozzle 4 is slidably installed in the chute 32. A first guide block 36 is provided on the side wall of the nozzle 4. The first guide block 36 penetrates through the communication groove 351 and is slidably connected with the first guide groove 37. A buffer block 35 is provided inside the boss 31. The horizontal cross-section of the buffer block 35 is in a trumpet shape. The small-diameter end of the buffer block 35 points to the chute 32. The two side edges of the horizontal cross-section of the buffer block 35 extend through the axis of the chute 32. The buffer block 35 is made of rubber. A communication groove 351 is provided inside the buffer block 35.

[0045] Please refer to Figure 6 and Figure 7 For the swinging component, it includes a second guide block 375. The second guide block 375 is provided on the push plate 33. The second guide block 375 is located on one side of the push plate 33 close to the outer wall of the boss 31. A rotating hole 38 is provided on the moving die 3. The boss 31 is rotatably installed in the rotating hole 38. A second guide groove 39 is provided on the inner wall of the rotating hole 38. The second guide groove 39 includes a straight section 391 and a rotating section 392. The straight section 391 is straight and horizontally arranged. The trajectory of the rotating section 392 is in a wavy shape. The length of the rotating section 392 on the horizontal plane is equal to the length of the spraying section 372. The two ends of the rotating section 392 are connected with the straight section 391, and the connection point is located at the center point in the vertical direction of the rotating section 392. The second guide block 375 is slidably connected with the second guide groove 39.

[0046] Please refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 5, the nozzle 4 includes a liquid injection cavity 41 and a nozzle 42. The liquid injection cavity 41 is communicated with the infusion tube 5. The lower end surface of the liquid injection cavity 41 is rotatably connected to the upper end surface of the nozzle 42. A plurality of spray openings 421 are evenly distributed on the nozzle 42. The horizontal projection of the spray openings 421 is arranged obliquely. The nozzle 42 is made of a flexible material. An air duct tube 6 is slidably installed in the nozzle 4. An air tube 43 is provided in the moving mold 3. The air tube 43 is communicated with the air duct tube 6. The air duct tube 6 penetrates through the liquid injection cavity 41 and is rotatably connected to the nozzle 42. The lower end surface of the air duct tube 6 is flush with the lower end surface of the nozzle 42. A baffle 44 is provided at the connection between the liquid injection cavity 41 and the nozzle 42. The baffle 44 is provided with atomization holes 441. The small-diameter end of the atomization holes 441 points to the nozzle 42. The lower end of the air duct tube 6 is provided with ventilation holes 45. The air duct hole is communicated with the nozzle 42 through the ventilation holes 45. The lower end surface of the air duct tube 6 is provided with an air nozzle 431. Guide vanes 432 are evenly distributed in a ring in the air nozzle 431. The guide vanes 432 are obliquely arranged. The inclination angle of the guide vanes 432 in the vertical plane projection is α = 40°.

[0047] Working principle: After the mold has finished demolding the last casting, the driving mold 3 is now moved toward the fixed mold 1 under the guidance of the guide column 2. During the process, the push plate 33 near one end of the groove 14 contacts the groove 14 on the fixed mold 1. As the movable mold 3 moves, the push plate 33 slides in the slide groove 32. At the same time, the No. 1 guide block 36 moves from the highest point in the telescopic section 373 in the No. 1 guide groove 37 to the spraying section 372. Since the telescopic section 373 is inclined, under the action of the No. 1 guide block 36 and the telescopic section 373, the No. 1 guide block 36 drives the nozzle 4 to slide in the slide groove 32 through the connecting groove 351 and extends out of the boss 31. During the process, the No. 2 guide block 375 is in the straight section 391 of the No. 2 guide groove 39. When the nozzle 4 extends out of the boss 31, the demoulding agent is driven to enter the injection cavity 41 of the nozzle 4 through the infusion tube 5. As the demoulding agent continues to move forward, the demoulding agent passes through the atomizing hole 441 on the baffle 44. Due to the pressure difference between the injection cavity 41 and the nozzle 42 and the design of the atomizing hole 441, the demoulding agent at the nozzle 42 is atomized. At this time, the atomized demoulding agent enters the nozzle 42, and the high pressure enters the air pipe 43 through the airway tube 6. At this time, part of the high-pressure airflow enters the nozzle 42 connected thereto through the vent hole 45. Since the nozzle 42 is made of rubber material, it has good elasticity, flexibility and good wear resistance. When the demoulding agent enters the nozzle 4 2, it bulges outwards under the action of internal pressure, and plays a role of pressure buffering through the flexible deformation of the nozzle 42. The nozzle 42 is evenly distributed with nozzles 421. At this time, the high-pressure airflow carries the atomized release agent out from the nozzles 421, and then sprays the mold surface. At the same time, the surface of the nozzle 42 is in an arc shape, and the nozzles 421 on the vertical plane are distributed in an arc shape, which increases the spraying range of the release agent. At the same time, since the nozzle 4 and the injection cavity 41 are rotatably connected, when the high-pressure release agent is sprayed from the inclined nozzles 421, a reaction force will be generated on the nozzle 42. Since the nozzles 421 are arranged in an annular shape and are inclined, the reaction force generated by the release agent sprayed from each nozzle 421 A torque is formed in the horizontal direction, which makes the nozzle 42 rotate around its central axis. The rotation of the nozzle 4 makes the range of the sprayed release agent form a circular or elliptical coverage area, thereby increasing the coverage area of ​​the spraying. Part of the high-pressure airflow flows toward the cavity 12 and the core 11 through the air nozzle 431 at the end of the air pipe 43. During the process, under the action of the guide vane 432 in the air nozzle 431, the airflow will flow along the inclined direction of the guide vane 432 when passing through the guide vane 432. The annularly evenly distributed guide vanes 432 can also cause the airflow to rotate, thereby driving the falling release agent and making it evenly adhere to the core 11 and the cavity 12, further improving the uniformity of the spraying of the spray agent.

[0048] During the spraying process of the nozzle 4, as the moving die 3 moves, the push plate 33 slides in the chute 32, driving the second guide block 375 to move simultaneously. At this time, the second guide block 375 slides in the second guide groove 39. When the first guide block 36 slides in the spraying section 372, the second guide block 375 slides in the rotating section 392. Since the trajectory of the rotating section 392 is wavy, under the action of the rotating section 392 and the second guide block 375, the boss 31 reciprocally twists in the rotating hole 38, thereby driving the nozzle 4 to reciprocally swing. Through the cooperation of the second guide block 375 and the rotating section 392, the nozzle 4 swings back and forth when spraying the release agent, increasing the spraying range of the release agent. When the first guide block 36 slides in the retraction section 371 and the telescopic section 373, the second guide block 375 slides in the straight section 391. At this time, the position of the boss 31 remains unchanged. Through the cooperation of the second guide block 375 and the straight section 391, while ensuring the normal telescoping of the nozzle 4, friction between the boss 31 and the groove 14 is avoided during mold opening and closing.

[0049] As the moving die 3 continues to move forward, at this time, the first guide block 36 moves from the spraying section 372 into the telescopic section 373 on the other side. During this process, the air duct 6 and the infusion tube 5 stop. As the moving die 3 continues to move forward, at this time, the first guide block 36 comes into the retraction section 371. At this time, the boss 31 comes into the groove 14, and the core and the cavity 12 are matched. Subsequently, molten aluminum is injected into the casting cavity 13 formed by the cooperation of the core and the cavity 12, and wait for the casting to be formed. At this time, the moving die 3 is separated from the fixed die 1, and the moving die 3 moves in the reverse direction. Since a magnet 374 is provided inside one end of the push plate 33 close to the groove 14, at this time, the magnet 374 is adsorbed on the fixed die 1. As the moving die 3 moves, at this time, the push plate 33 slides in the chute 32, and at the same time, the first guide block 36 slides in the first guide groove 37. When the first guide block 36 slides to the connection between the retraction section 371 and the telescopic section 373, the boss 31 disengages from the groove 14. As the moving die 3 continues to move, the first guide block 36 moves from the highest point of the telescopic section 373 on the side close to the groove 14 through the spraying section 372 to the highest point of the telescopic section 373 on the other side. At this time, the first guide block 36 cannot move any further, but the moving die 3 is still moving. At this time, the power of the moving die 3 is converted into the pulling force of the push plate 33 through the first guide block 36. When the pulling force of the push plate 33 is greater than the suction force of the magnet 374, the push plate 33 is separated from the fixed die 1. Through the setting of the retraction groove, it is avoided that the nozzle 4 extends out in advance and collides with the inner wall of the groove 14, resulting in damage to the equipment. At the same time, through the design of the magnet 374 on the push plate 33, when the fixed die 1 and the moving die 3 are separated, the power of the moving die 3 is used to reset the first guide block 36, preparing for the spraying of the release agent next time. When the first guide block 36 moves to the end of the first guide groove 37 on the push plate 33, since the buffer block 35 is made of rubber and has the characteristics of high elasticity and high resistance, at this time, the energy is absorbed through the elastic deformation of the buffer block 35. At the same time, when the buffer block 35 deforms, the first guide block 36 deflects around the axis of the chute 32 and is parallel to the two side edges of the horizontal section of the buffer block 35. At this time, the contact area between the buffer block 35 and the first guide block 36 is the largest. At the same time, the deflection of the first guide block 36 increases the cross-sectional area of the first guide block 36 in the shearing force direction. The increase in the cross-sectional area makes the shearing area of the first guide block 36 increase, so as to reduce the shearing stress on the first guide block 36. During the process, when the first guide block 36 moves to the spraying section 372, high-pressure air can be introduced, and the air flows out from the air nozzle 431 through the air duct 6 and the air pipe 43, thereby reducing the temperature of the casting and at the same time being able to clean the debris remaining on the moving die 3.

[0050] The above has described in detail a specific embodiment of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above-described embodiment. For those skilled in the art, without departing from the principles and ideas of the present invention, various changes, modifications, substitutions, and variations made to these embodiments should still fall within the protection scope of the present invention.

Claims

1. An integrated die-casting molding device for aluminum products, comprising a fixed mold (1), a movable mold (3), a guide column (2), a core (11), a cavity (12), a boss (31) and a nozzle (4), wherein the fixed mold (1) is symmetrically provided with a guide column (2), the movable mold (3) is arranged parallel to the fixed mold (1), the movable mold (3) is slidably connected to the fixed mold (1) through the guide column (2), the adjacent surfaces of the fixed mold (1) and the movable mold (3) are provided with a core (11) and a cavity (12), the core (11) and the cavity (12) cooperate to form a casting cavity (13), the movable mold (3) is provided with an infusion tube (5), characterized in that, The fixed mold (1) is provided with a groove (14), the movable mold (3) is provided with a swing assembly, the movable mold (3) is provided with a plurality of bosses (31), the swing assembly is connected to the bosses (31), the bosses (31) are distributed along the outer contour of the core (11) or the cavity (12), the bosses (31) and the groove (14) cooperate with each other, an extension assembly is provided in the boss (31), a nozzle (4) is installed in the boss (31), the extension assembly is connected to the nozzle (4), the nozzle (4) is connected to the infusion tube (5), the direction of the nozzle (4) points to the core (11) and the cavity (12), the swing assembly is used to drive the boss (31) to rotate by the clamping force between the movable mold (3) and the fixed mold (1), and the extension assembly is used to drive the nozzle (4) to extend out of the boss (31) by the clamping force between the movable mold (3) and the fixed mold (1).

2. The integrated die-casting equipment for aluminum products according to claim 1, characterized in that: The extension assembly comprises a push plate (33) and a guide block (36); the boss (31) is provided with a sliding groove (34) along the axial direction; the push plate (33) is slidably installed in the sliding groove (34); the push plate (33) is provided with a guide groove (37); the guide groove (37) comprises a retracted section (371), a spraying section (372) and a telescopic section (373); the spraying section (372) and the retracted section (371) are arranged horizontally; the telescopic section (373) is symmetrically inclined; the lowest point of the telescopic section (373) is at the same height as the retracted section (371); the telescopic section (373) close to the groove (14) is connected to the retracted section (371); and the highest point of the telescopic section (373) is The push plate (33) is at the same height as the retracted section (371). A magnet (374) is provided in one end of the push plate (33) close to the groove (14) and connected to the end surface of the groove (14). The other end is slidably installed in the sliding groove (34). A sliding groove (32) is provided in the boss (31). The sliding groove (32) points to the core (11) and the cavity (12). A connecting groove (351) is provided in the boss (31). The sliding groove (32) is connected to the sliding groove (34) through the connecting groove (351). A nozzle (4) is slidably installed in the sliding groove (32). A guide block (36) is provided on the side wall of the nozzle (4). The guide block (36) passes through the connecting groove (351) and is slidably connected to the guide groove (37).

3. The integrated die-casting equipment for aluminum products according to claim 2, characterized in that: A buffer block (35) is provided inside the boss (31). The horizontal cross section of the buffer block (35) is trumpet-shaped. The small diameter end of the buffer block (35) points to the slide groove (32). The side edges of the horizontal cross section of the buffer block (35) extend through the axis of the slide groove (32). The buffer block (35) is made of rubber. A connecting groove (351) is provided inside the buffer block (35).

4. The integrated die-casting equipment for aluminum products according to claim 3, characterized in that: The swing assembly comprises a second guide block (375), the push plate (33) is provided with the second guide block (375), the second guide block (375) is located on the push plate (33) near the outer wall of the boss (31), the movable mold (3) is provided with a rotating hole (38), the boss (31) is rotatably installed in the rotating hole (38), the inner wall of the rotating hole (38) is provided with a second guide groove (39), the second guide groove (39) comprises a straight line segment (3 91) and a rotating section (392), the straight section (391) is straight and horizontally arranged, the rotating section (392) has a wave-shaped trajectory, the length of the rotating section (392) on the horizontal plane is equal to the length of the spraying section (372), the two ends of the rotating section (392) are connected with the straight section (391), and the connection point is located at the center point of the rotating section (392) in the vertical direction, and the second guide block (375) is slidably connected to the second guide groove (39).

5. The integrated die-casting equipment for aluminum products according to claim 1, characterized in that: The spray head (4) comprises a liquid injection cavity (41) and a nozzle (42); the liquid injection cavity (41) is connected to the liquid infusion tube (5); the lower end surface of the liquid injection cavity (41) is rotatably connected to the upper end surface of the nozzle (42); a plurality of nozzles (421) are evenly distributed on the nozzle (42); the nozzles (421) are arranged obliquely in horizontal projection; and the nozzle (42) is made of a flexible material.

6. The integrated die-casting equipment for aluminum products according to claim 5, characterized in that: An airway tube (6) is slidably mounted in the nozzle (4), an airway tube (43) is arranged in the movable mold (3), the airway tube (43) is communicated with the airway tube (6), the airway tube (6) passes through the injection cavity (41) and is rotatably connected to the nozzle (42), the lower end surface of the airway tube (6) is flush with the lower end surface of the nozzle (42), a baffle (44) is arranged at the connection between the injection cavity (41) and the nozzle (42), the baffle (44) is provided with an atomizing hole (441), the small diameter end of the atomizing hole (441) points to the nozzle (42), a vent hole (45) is arranged at the lower end of the airway tube (6), and the airway hole is communicated with the nozzle (42) through the vent hole (45).

7. The integrated die-casting equipment for aluminum products according to claim 6, characterized in that: The lower end surface of the airway tube (6) is provided with an air nozzle (431), and guide vanes (432) are evenly distributed in an annular shape inside the air nozzle (431). The guide vanes (432) are arranged obliquely, and the inclination angle of the guide vanes (432) on the vertical plane projection is α, and 30°<α<60°.

8. The integrated die-casting equipment for aluminum products according to claim 4, characterized in that: The movable mold (3) and the fixed mold (1) are made of H13 steel, the distance between the boss (31) and the edge of the casting cavity (13) is β, and 10mm<β<50mm.

Images