Continuous automatic die-casting device and die-casting process for aluminum alloy castings

Abstract

The invention discloses a continuous automatic die-casting device for aluminum alloy castings and a die-casting process of the continuous automatic die-casting device, and relates to the technical field of aluminum alloy die-casting. The device comprises a base; a lifting mechanism is vertically arranged on the upper surface of the base; a pouring tank is vertically connected to the lifting mechanism; a cooling liquid storage box is arranged below the pouring tank; a rotating mechanism is arranged on the top wall of the cooling liquid storage box; a plurality of refrigeration mechanisms connected with the cooling liquid storage box are evenly distributed on the rotating mechanism in the annular direction. Die-casting die bodies are fixed to the tops of the refrigerating mechanisms correspondingly. A cooling liquid control mechanism is arranged on each refrigerating mechanism; and the plurality of cooling liquid control mechanisms are connected through a driving mechanism. The aluminum alloy casting die-casting device is reasonable in structural design and convenient to use, and the die-casting efficiency of aluminum alloy castings is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of aluminum alloy die casting, and particularly relates to a continuous automatic die casting device for aluminum alloy castings and its die casting process. Background Art

[0002] The die casting of aluminum alloy castings is a common casting process used to produce aluminum alloy parts with complex shapes. Die casting refers to injecting liquid aluminum alloy into a metal mold under high pressure, then solidifying and cooling in the mold, and finally obtaining the required aluminum alloy casting.

[0003] Chinese Patent with the authorization announcement number CN115301913B discloses a continuous automatic die casting device for aluminum alloy castings and its die casting process. It drives the lead screw to rotate forward by controlling the motor, causing the threaded pipe to drive the lifting plate to descend. Then, the injection device pours the aluminum alloy liquid into the die casting mold. Next, it continues to drive the lead screw to rotate forward, and the lead screw drives the threaded pipe to continue descending. The threaded pipe drives the lower push plug plate to descend through the lower pressing ring, lower pressing rod, movable ring plate, spline shaft, movable plate, and lower push rod. The lower push plug plate allows the coolant in the liquid storage tank to enter the cooling cavity of the rotating ring plate through the connecting pipe and the annular water pipe, realizing the cooling and heat dissipation at the bottom of the die casting mold. After the die casting mold is cooled, it drives the lead screw to rotate reversely to reset the injection device and return the coolant. At the same time, through the setting of the one-way limiting component, the die casting mold is switched. The above device has the following drawbacks: after the injection device fills the space inside the die casting mold with aluminum alloy liquid, the continued descent of the threaded pipe will also drive the injection device to continue descending, and the height of the die casting mold is inconvenient, resulting in problems such as the injection device colliding with the die casting mold. Moreover, when cooling and dissipating heat from the die casting mold, the injection device is still in a non-working state, which will affect the production efficiency of aluminum alloy castings and lengthen the production cycle of aluminum alloy castings. Therefore, it is urgent to study a continuous automatic die casting device for aluminum alloy castings and its die casting process to solve the above problems. Summary of the Invention

[0004] The present invention aims to provide a continuous automatic die casting device for aluminum alloy castings and its die casting process, aiming to solve the technical problems raised in the above background art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention relates to a continuous automatic die-casting device for aluminum alloy castings, comprising a base; a lifting mechanism is vertically installed on the upper surface of the base; a pouring tank is vertically connected to the lifting mechanism; a coolant storage tank is arranged below the pouring tank; a rotating mechanism is installed on the top wall of the coolant storage tank; a plurality of refrigeration mechanisms, all connected to the coolant storage tank, are evenly distributed along the circumferential direction on the rotating mechanism; the top of each of the plurality of refrigeration mechanisms is fixed with a die-casting mold body; a coolant control mechanism is installed on each of the plurality of refrigeration mechanisms; and the plurality of coolant control mechanisms are connected to each other through a driving mechanism.

[0007] As a preferred technical solution of the present invention, the lifting mechanism includes a guide rod vertically fixed on the upper surface of the base; a lifting block is slidably sleeved on the guide rod; the pouring tank is fixed on the lifting block; a screw rod is vertically inserted through the lifting block, and the screw rod is threadedly connected to the lifting block; the lower end of the screw rod is rotatably connected to the upper surface of the base; a first belt pulley is fixedly sleeved on the lower end of the screw rod; the first belt pulley is connected to a second belt pulley through a synchronous belt; the second belt pulley is fixedly sleeved on the output shaft of a first motor; and the first motor is vertically fixed on the base.

[0008] As a preferred technical solution of the present invention, the rotating mechanism includes a second motor vertically fixed on the base and a rotating shaft vertically rotatably connected to the top wall of the coolant storage tank; the output shaft of the second motor is coaxially fixed with a transmission shaft; a third belt pulley is fixedly sleeved on the upper end of the transmission shaft; the third belt pulley is connected to a fourth belt pulley through a synchronous belt; the fourth belt pulley is fixedly sleeved on the outer circumference of the rotating shaft; and a support plate is horizontally fixed on the upper end of the rotating shaft.

[0009] As a preferred technical solution of the present invention, the lower end of the rotating shaft penetrates through the top wall of the coolant storage tank and extends to the bottom of the coolant storage tank; the refrigeration mechanism includes an infusion channel vertically opened inside the rotating shaft and a refrigeration box fixedly inserted through the support plate; the lower end of the infusion channel penetrates through the lower end surface of the rotating shaft; the die-casting mold body is fixed on the top of the refrigeration box; a delivery pipe is fixed on the bottom wall of the refrigeration box; one end of the delivery pipe away from the refrigeration box is fixed on the circumferential side wall of the rotating shaft; and the refrigeration box is communicated with the infusion channel through the delivery pipe.

[0010] As a preferred technical solution of the present invention, the top of the refrigeration box is of an open structure, and the top wall of the die-casting mold body abuts against the open top of the refrigeration box; the coolant control mechanism includes a movable column vertically inserted through the bottom wall of the refrigeration box; the movable column is slidably matched with the refrigeration box; a partition plate is horizontally fixed on the top end of the movable column; and the edge of the partition plate is slidably abutted against the inner wall of the refrigeration box.

[0011] As a preferred technical solution of the present invention, the driving mechanism includes a bearing plate horizontally fixed on the rotating shaft; a plurality of positioning shafts are vertically rotatably connected to the upper surface of the bearing plate; cylindrical cams are coaxially fixed to the upper ends of the plurality of positioning shafts; connecting columns are horizontally slidably inserted into the working grooves of the plurality of cylindrical cams; limiting sleeves are vertically fixed to the ends of the plurality of connecting columns away from the cylindrical cams; the plurality of limiting sleeves are respectively fixedly sleeved on the lower ends of the plurality of movable columns.

[0012] As a preferred technical solution of the present invention, an incomplete gear is horizontally arranged below the bearing plate; the incomplete gear is coaxially sleeved on the outer periphery of the rotating shaft, and the incomplete gear is in clearance fit with the rotating shaft; the lower surface of the incomplete gear is fixed to the top wall of the coolant storage tank through a plurality of brackets; a plurality of gears are horizontally arranged on the circumferential side of the incomplete gear; the plurality of gears are respectively fixedly sleeved on the lower ends of the plurality of positioning shafts.

[0013] As a preferred technical solution of the present invention, a plurality of tension springs are vertically arranged above the plurality of limiting sleeves; the plurality of tension springs are respectively sleeved on the outer peripheries of the plurality of movable columns, and the upper and lower ends of each tension spring are respectively fixed to the corresponding limiting sleeve and the refrigeration box.

[0014] As a preferred technical solution of the present invention, a limiting frame is arranged below the support plate; the limiting frame includes a limiting guide rail in a semicircular structure; the limiting guide rail is coaxially arranged with the rotating shaft, and the limiting guide rail is horizontally arranged below the refrigeration box; a plurality of mounting columns are vertically fixed to the lower surface of the limiting guide rail; the lower ends of the plurality of mounting columns are all fixed to the top wall of the coolant storage tank; balls are embedded in the lower end surfaces of the plurality of movable columns; any one of the balls can roll on the limiting guide rail.

[0015] A die-casting process for a continuous automatic die-casting device for aluminum alloy castings as described above includes the following steps:

[0016] Step 1: After any die-casting mold body moves to directly below the pouring tank, the first motor drives the screw to rotate through the second belt pulley and the first belt pulley, so that the screw drives the pouring tank to move downward through the lifting block, realizing that the pouring port of the pouring tank is inserted into the injection port of the die-casting mold body, and the pouring tank starts to inject molten aluminum alloy liquid in a hot-melt liquid state into the die-casting mold body.

[0017] Step 2: After the die-casting mold body is filled, the pouring tank stops pouring. At the same time, the lifting block drives the pouring tank to move upward to the reset position. Then, the second motor drives the rotating shaft to start rotating through the transmission shaft, the third belt pulley and the fourth belt pulley, causing the rotating shaft to drive the just-filled die-casting mold body to rotate horizontally by 90° through the support plate. The gear corresponding to the die-casting mold body meshes with the incomplete gear and rolls on the incomplete gear. Then, the gear drives the cylindrical cam to rotate through the positioning shaft, causing the cylindrical cam to drive the partition plate to move upward through the connecting column, the limit sleeve and the movable column, realizing sucking the coolant in the coolant storage tank into the refrigeration box below the just-filled die-casting mold body through the liquid delivery channel and the delivery pipe, and starting the refrigeration treatment of the just-filled die-casting mold body;

[0018] Step 3: The rotating shaft drives the die-casting mold body to continue rotating horizontally by 90° through the support plate, causing the ball on the lower end of the movable column corresponding to the die-casting mold body to roll on the limit guide rail, and at this time, the gear corresponding to the die-casting mold body and the incomplete gear are in a non-meshing state;

[0019] Step 4: After repeating Step 3 once, the refrigeration treatment of the filled die-casting mold body is completed. At this time, the formed aluminum alloy casting is taken out from the die-casting mold body. Then, the rotating shaft drives the die-casting mold body to continue rotating horizontally by 90° through the support plate, causing the ball on the lower end of the movable column corresponding to the die-casting mold body to separate from the limit guide rail, and at this time, the gear corresponding to the die-casting mold body meshes with the incomplete gear, causing the gear to drive the partition plate to move downward through the positioning shaft, the cylindrical cam, the connecting column, the limit sleeve and the movable column, realizing pressing the coolant in the refrigeration box below the die-casting mold body from which the aluminum alloy casting has been taken out into the interior of the coolant storage tank through the liquid delivery channel and the delivery pipe;

[0020] Step 5: Repeat Steps 1 to 4 to realize the continuous die-casting operation of aluminum alloy castings.

[0021] The present invention has the following beneficial effects:

[0022] In the present invention, a lifting mechanism drives a pouring tank to move downward, and the pouring tank injects molten aluminum alloy liquid in a hot-melt liquid state into a die-casting mold body. Then, a rotating mechanism drives the die-casting mold body to rotate horizontally. At the same time, a driving mechanism drives a coolant control mechanism to move, so as to realize the transportation of the coolant in the coolant storage tank into a refrigeration mechanism, and perform a refrigeration treatment on the poured die-casting mold body. Then, after the refrigeration operation of the die-casting mold body is completed and the formed aluminum alloy casting is taken out of the die-casting mold body, the rotating mechanism drives the die-casting mold body to rotate to the initial position. At the same time, the coolant control mechanism returns the coolant in the refrigeration mechanism back to the coolant storage tank. Thereby, not only the die-casting efficiency of the aluminum alloy casting is effectively improved, but also the production cycle of the aluminum alloy casting is shortened, which has high market application value.

[0023] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of a continuous automatic die-casting device for an aluminum alloy casting of the present invention.

[0026] Figure 2 It is Figure 1 the main structural view of.

[0027] Figure 3 It is a schematic structural diagram of the lifting mechanism of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the connection between the rotating mechanism, the refrigeration mechanism, the coolant control mechanism and the driving mechanism of the present invention.

[0029] Figure 5 It is a schematic structural diagram of the rotating mechanism of the present invention.

[0030] Figure 6 It is a schematic structural diagram of the connection between the refrigeration mechanism, the coolant control mechanism and the driving mechanism of the present invention.

[0031] Figure 7 It is a schematic structural diagram of the connection between the coolant control mechanism and the driving mechanism of the present invention.

[0032] Figure 8Schematic structural diagram of the limit frame of the present invention provided on the coolant storage tank.

[0033] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0034] 1 - Base, 2 - Lifting mechanism, 3 - Pouring tank, 4 - Coolant storage tank, 5 - Rotating mechanism, 6 - Refrigeration mechanism, 7 - Die-casting mold body, 8 - Coolant control mechanism, 9 - Driving mechanism, 10 - Limit frame, 11 - Ball, 201 - Guide rod, 202 - Lifting block, 203 - Screw rod, 204 - First pulley, 205 - Second pulley, 206 - First motor, 501 - Second motor, 502 - Rotating shaft, 503 - Transmission shaft, 504 - Third pulley, 505 - Fourth pulley, 506 - Support plate, 601 - Infusion channel, 602 - Refrigeration box, 603 - Delivery pipe, 801 - Movable column, 802 - Partition plate, 901 - Bearing plate, 902 - Positioning shaft, 903 - Cylindrical cam, 904 - Connecting column, 905 - Limit sleeve, 906 - Incomplete gear, 907 - Bracket, 908 - Gear, 909 - Tension spring, 1001 - Limit guide rail, 1002 - Mounting column. Specific embodiments

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] Please refer to Figure 1-2As shown in the figure, the present invention is a continuous automatic die-casting device for aluminum alloy castings, including a base 1; a lifting mechanism 2 is vertically installed on the upper surface of the base 1; a conventional pouring tank 3 in the art is vertically connected to the lifting mechanism 2; a pouring port with a control switch is vertically arranged at the bottom of the pouring tank 3; a conventional coolant storage tank 4 in the art is arranged below the pouring tank 3; the coolant storage tank 4 is bolted to the upper surface of the base 1; a ventilation hole is opened at the upper edge of one side wall of the coolant storage tank 4; a rotating mechanism 5 is installed on the top wall of the coolant storage tank 4; a plurality of refrigeration mechanisms 6 all connected to the coolant storage tank 4 are evenly installed along the circumferential direction on the rotating mechanism 5; a conventional die-casting mold body 7 in the art is fixed on the top of each of the plurality of refrigeration mechanisms 6; a coolant control mechanism 8 is installed on each of the plurality of refrigeration mechanisms 6; the plurality of coolant control mechanisms 8 are connected to each other through a driving mechanism 9. During use, the pouring tank 3 is driven by the lifting mechanism 2 to move downward, and the pouring tank 3 injects the molten aluminum alloy liquid in a hot-melt liquid state into the die-casting mold body 7. Then, the die-casting mold body 7 is driven by the rotating mechanism 5 to rotate horizontally. At the same time, the driving mechanism 9 drives the coolant control mechanism 8 to move, so as to realize the transportation of the coolant in the coolant storage tank 4 into the refrigeration mechanism 6, and realize the refrigeration treatment of the already filled die-casting mold body 7. Then, after the refrigeration operation of the die-casting mold body 7 is completed and the formed aluminum alloy casting is taken out of the die-casting mold body 7, the die-casting mold body 7 is driven by the rotating mechanism 5 to rotate to the initial position. At the same time, the coolant in the refrigeration mechanism 6 is transported back to the coolant storage tank 4 by using the coolant control mechanism 8. Therefore, not only the die-casting efficiency of the aluminum alloy casting is effectively improved, but also the production cycle of the aluminum alloy casting is shortened.

[0038] Among them, such as Figure 2-3As shown in the figure, the lifting mechanism 2 includes a guide rod 201 vertically bolted to the upper surface of the base 1; a lifting block 202 is slidably sleeved on the guide rod 201; a pouring tank 3 is bolted to the lifting block 202; a screw rod 203 is vertically inserted through the lifting block 202, and the screw rod 203 is threadedly connected to the lifting block 202; the lower end of the screw rod 203 is rotatably connected to the upper surface of the base 1; a first belt pulley 204 is key-connected to the lower end of the screw rod 203; the first belt pulley 204 is connected to a second belt pulley 205 through a synchronous belt; the second belt pulley 205 is key-connected to the output shaft of a first motor 206; the first motor 206 is vertically bolted to the base 1. During use, when any die-casting mold body 7 moves to directly below the pouring tank 3, the first motor 206 drives the screw rod 203 to rotate through the second belt pulley 205 and the first belt pulley 204, causing the screw rod 203 to drive the pouring tank 3 to move downward through the lifting block 202, so that the pouring port of the pouring tank 3 is inserted into the injection port of the die-casting mold body 7, thereby realizing the pouring operation of the die-casting mold body 7. After the pouring of the die-casting mold body 7 is completed, the pouring tank 3 stops pouring, and at the same time, the lifting block 202 drives the pouring tank 3 to move upward to reset, effectively avoiding problems such as interference and collision between the pouring tank 3 and the die-casting mold body 7.

[0039] Embodiment 2:

[0040] On the basis of Embodiment 1, as Figure 2 and Figure 4-7As shown in the figure, the rotating mechanism 5 includes a second motor 501 vertically bolted to the base 1 and a rotating shaft 502 vertically rotatably connected to the top wall of the coolant storage tank 4; the output shaft of the second motor 501 is coaxially fixed with a transmission shaft 503; a third pulley 504 is key-connected to the upper end of the transmission shaft 503; the third pulley 504 is connected to a fourth pulley 505 by a synchronous belt drive; the fourth pulley 505 is key-connected to the outer circumference of the rotating shaft 502; a support plate 506 is horizontally bolted to the upper end of the rotating shaft 502; the lower end of the rotating shaft 502 penetrates the top wall of the coolant storage tank 4 and extends to the bottom of the coolant storage tank 4, that is, the lower end of the rotating shaft 502 is immersed in the coolant of the coolant storage tank 4; the refrigeration mechanism 6 includes an infusion channel 601 vertically opened inside the rotating shaft 502 and a refrigeration box 602 fixedly inserted through the support plate 506; the lower end of the infusion channel 601 penetrates the lower end face of the rotating shaft 502; the refrigeration box 602 is bolted to the support plate 506; the die-casting mold body 7 is bolted to the top of the refrigeration box 602; the top of the refrigeration box 602 is an open structure, and the top wall of the die-casting mold body 7 abuts against the open top of the refrigeration box 602; a delivery pipe 603 is fixed to the bottom wall of the refrigeration box 602; one end of the delivery pipe 603 away from the refrigeration box 602 is fixed to the circumferential side wall of the rotating shaft 502; the refrigeration box 602 is connected to the infusion channel 601 through the delivery pipe 603; the coolant control mechanism 8 includes a movable column 801 vertically inserted through the bottom wall of the refrigeration box 602; the movable column 801 is slidably matched with the refrigeration box 602; a partition plate 802 is horizontally bolted to the top end of the movable column 801; the edge of the partition plate 802 is slidably abutted against the inner wall of the refrigeration box 602; a coolant temporary storage space is formed between the partition plate 802 and the bottom wall of the refrigeration box 602.During use, after the pouring of the die-casting mold body 7 is completed, the pouring tank 3 stops pouring. At the same time, the lifting block 202 drives the pouring tank 3 to move upward to the reset position. Then, the second motor 501 drives the rotating shaft 502 to start rotating through the transmission shaft 503, the third belt pulley 504 and the fourth belt pulley 505, so that the rotating shaft 502 drives the just-poured die-casting mold body 7 to rotate horizontally by 90° through the support plate 506. During the revolution of the die-casting mold body 7, the movable column 801 drives the partition plate 802 to move upward, so as to suck the coolant in the coolant storage tank 4 into the inside of the refrigeration box 602 below the just-poured die-casting mold body 7 through the liquid infusion channel 601 and the delivery pipe 603, and start the refrigeration treatment of the just-poured die-casting mold body 7. Then, after the die-casting mold body 7 is continuously driven to revolve by 90°, the refrigeration treatment of the poured die-casting mold body 7 is completed. At this time, the formed aluminum alloy casting is taken out from the die-casting mold body 7. As the die-casting mold body 7 continues to be driven to rotate by 90°, the movable column 801 drives the partition plate 802 to move downward, so as to press the coolant in the refrigeration box 602 below the die-casting mold body 7 from which the aluminum alloy casting has been taken out into the inside of the coolant storage tank 4 through the liquid infusion channel 601 and the delivery pipe 603, effectively ensuring the refrigeration efficiency and effect of the hot-melt liquid aluminum alloy liquid in the die-casting mold body 7.

[0041] Embodiment Three:

[0042] On the basis of Embodiment Two, as Figure 2 , Figure 4 and Figure 6-8As shown in the figure, the driving mechanism 9 includes a bearing plate 901 horizontally bolted to the rotating shaft 502; a plurality of positioning shafts 902 are vertically rotatably connected to the upper surface of the bearing plate 901; cylindrical cams 903 are coaxially fixed to the upper ends of the plurality of positioning shafts 902; connecting columns 904 are horizontally slidably inserted into the working grooves of the plurality of cylindrical cams 903; limiting sleeves 905 are vertically welded to the ends of the plurality of connecting columns 904 away from the cylindrical cams 903; the plurality of limiting sleeves 905 are respectively bolted to the lower ends of the plurality of movable columns 801; an incomplete gear 906 is horizontally arranged below the bearing plate 901; the teeth of the incomplete gear 906 are on the side of the rotating shaft 502 close to the screw 203; the incomplete gear 906 is coaxially sleeved on the outer periphery of the rotating shaft 502, and the incomplete gear 906 has a clearance fit with the rotating shaft 502; the lower surface of the incomplete gear 906 is bolted to the top wall of the coolant storage tank 4 through a plurality of brackets 907; a plurality of gears 908 are horizontally arranged on the circumferential side of the incomplete gear 906; the plurality of gears 908 are respectively key-connected to the lower ends of the plurality of positioning shafts 902; a plurality of tension springs 909 are vertically arranged above the plurality of limiting sleeves 905; the plurality of tension springs 909 are respectively sleeved on the outer peripheries of the plurality of movable columns 801, and the upper and lower ends of each tension spring 909 are respectively fixed to the corresponding limiting sleeve 905 and the refrigeration box 602.During use, after the casting mold body 7 is filled, the pouring tank 3 stops pouring. At the same time, the lifting block 202 drives the pouring tank 3 to move upward to the reset position. Then, the second motor 501 drives the rotating shaft 502 to start rotating through the transmission shaft 503, the third belt pulley 504, and the fourth belt pulley 505. The rotating shaft 502 drives the just-filled casting mold body 7 to rotate horizontally by 90° through the support plate 506. The gear 908 corresponding to the casting mold body 7 meshes with the incomplete gear 906 and rolls on the incomplete gear 906. Then, the gear 908 drives the cylindrical cam 903 to rotate through the positioning shaft 902. The cylindrical cam 903 drives the partition plate 802 to move upward through the connecting column 904, the limit sleeve 905, and the movable column 801, realizing the suction of the coolant in the coolant storage tank 4 into the internal cooling box 602 below the just-filled casting mold body 7 through the liquid infusion channel 601 and the delivery pipe 603, and starting the cooling treatment of the just-filled casting mold body 7. Then, the rotating shaft 502 drives the casting mold body 7 to continue to rotate horizontally by 90° through the support plate 506. At this time, the gear 908 corresponding to the casting mold body 7 is not meshed with the incomplete gear 906. After the cooling treatment of the filled casting mold body 7 is completed, the formed aluminum alloy casting is taken out from the casting mold body 7. Then, the rotating shaft 502 drives the casting mold body 7 to continue to rotate horizontally by 90° through the support plate 506, prompting the gear 908 corresponding to the casting mold body 7 to mesh with the incomplete gear 906. Then, the gear 908 drives the partition plate 802 to move downward through the positioning shaft 902, the cylindrical cam 903, the connecting column 904, the limit sleeve 905, and the movable column 801, realizing the pressing of the coolant in the cooling box 602 below the casting mold body 7 from which the aluminum alloy casting has been taken out into the internal coolant storage tank 4 through the liquid infusion channel 601 and the delivery pipe 603, effectively improving the continuous die-casting efficiency of the aluminum alloy casting.

[0043] Among them, such as Figure 2 and Figure 8As shown in the figure, a limiting frame 10 is provided below the support plate 506; the limiting frame 10 includes a limiting guide rail 1001 with a semi-circular structure; the limiting guide rail 1001 is coaxially arranged with the rotating shaft 502, and the limiting guide rail 1001 is horizontally arranged below the refrigeration box 602; the limiting guide rail 1001 is located on the side of the rotating shaft 502 away from the screw 203; a plurality of mounting columns 1002 are vertically welded to the lower surface of the limiting guide rail 1001; the lower ends of the plurality of mounting columns 1002 are bolted to the top wall of the coolant storage tank 4; ball bearings 11 are embedded in the lower end faces of the plurality of movable columns 801, and a ball pair connection is formed between the ball bearings 11 and the movable columns 801; any one of the ball bearings 11 can roll on the limiting guide rail 1001. During use, when the gear 908 and the incomplete gear 906 are in a non-engaged state, the ball bearing 11 on the lower end of the movable column 801 corresponding to the gear 908 rolls on the limiting guide rail 1001, so as to prevent the partition plate 802 connected to the movable column 801 from moving up and down. When the gear 908 and the incomplete gear 906 are engaged, the ball bearing 11 on the lower end of the movable column 801 corresponding to the gear 908 is separated from the limiting guide rail 1001, thus ensuring the control effect of the cylindrical cam 903 on the movable column 801.

[0044] A die-casting process for a continuous automatic die-casting device of an aluminum alloy casting as described above includes the following steps:

[0045] Step 1: After any die-casting mold body 7 moves to directly below the pouring tank 3, the first motor 206 drives the screw 203 to rotate through the second pulley 205 and the first pulley 204, causing the screw 203 to drive the pouring tank 3 to move downward through the lifting block 202, so that the pouring port of the pouring tank 3 is inserted into the injection port of the die-casting mold body 7, and the pouring tank 3 starts to inject the molten aluminum alloy liquid in a hot-melt liquid state into the die-casting mold body 7.

[0046] Step 2: After the pouring of the die-casting mold body 7 is completed, the pouring tank 3 stops pouring, and at the same time the lifting block 202 drives the pouring tank 3 to move upward to reset. Then, the second motor 501 drives the rotating shaft 502 to start rotating through the transmission shaft 503, the third pulley 504 and the fourth pulley 505, causing the rotating shaft 502 to drive the just-poured die-casting mold body 7 to rotate horizontally by 90° through the support plate 506. The gear 908 corresponding to the die-casting mold body 7 meshes with the incomplete gear 906 and rolls on the incomplete gear 906. Then, the gear 908 drives the cylindrical cam 903 to rotate through the positioning shaft 902, causing the cylindrical cam 903 to drive the partition plate 802 to move upward through the connecting column 904, the limiting sleeve 905 and the movable column 801, so as to suck the coolant in the coolant storage tank 4 into the interior of the refrigeration box 602 below the just-poured die-casting mold body 7 through the liquid delivery channel 601 and the delivery pipe 603, and start the refrigeration treatment of the just-poured die-casting mold body 7.

[0047] Step 3: Drive the die-casting mold body 7 to continue to rotate horizontally by 90° through the rotating shaft 502 via the support plate 506, so that the balls 11 on the lower end of the movable column 801 corresponding to the die-casting mold body 7 roll on the limit guide rail 1001, and at this time, the gear 908 corresponding to the die-casting mold body 7 and the incomplete gear 906 are in a non-engaged state;

[0048] Step 4: After repeating Step 3 once, the refrigeration treatment of the die-casting mold body 7 with the poured molten aluminum alloy is completed. At this time, the formed aluminum alloy casting is removed from the die-casting mold body 7, and then the die-casting mold body 7 is driven to continue to rotate horizontally by 90° through the rotating shaft 502 via the support plate 506, so that the balls 11 on the lower end of the movable column 801 corresponding to the die-casting mold body 7 are separated from the limit guide rail 1001, and at this time, the gear 908 corresponding to the die-casting mold body 7 and the incomplete gear 906 are engaged, so that the gear 908 drives the partition plate 802 to move downward through the positioning shaft 902, the cylindrical cam 903, the connecting column 904, the limit sleeve 905 and the movable column 801, so as to realize that the coolant in the refrigeration box 602 below the die-casting mold body 7 from which the aluminum alloy casting has been removed is pressed into the interior of the coolant storage tank 4 through the infusion channel 601 and the delivery pipe 603;

[0049] Step 5: Repeat Steps 1 to 4 to realize the continuous die-casting operation of the aluminum alloy casting.

[0050] It should be noted that the rotating shaft 502 stops for a period of time every time it drives the die-casting mold body 7 to rotate horizontally by 90°. This period of time is used to realize that the pouring tank 3 injects the molten aluminum alloy liquid in the hot-melt state into the die-casting mold body 7 and the pouring tank 3 returns to its original position after the pouring is completed, so as to ensure the production efficiency of the aluminum alloy casting.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A continuous automatic die-casting device for aluminum alloy castings, characterized in that: comprising a base (1); A lifting mechanism (2) is vertically mounted on the upper surface of the base (1); a pouring tank (3) is vertically connected to the lifting mechanism (2); A coolant storage tank (4) is arranged below the pouring tank (3); a rotating mechanism (5) is installed on the top wall of the coolant storage tank (4); a plurality of refrigeration mechanisms (6) connected to the coolant storage tank (4) are evenly arranged on the rotating mechanism (5) along a circular direction; a die-casting mold body (7) is fixed on the top of each of the plurality of refrigeration mechanisms (6); a coolant control mechanism (8) is installed on each of the plurality of refrigeration mechanisms (6); and the plurality of coolant control mechanisms (8) are connected to each other via a driving mechanism (9).

2. The continuous automatic die-casting device for aluminum alloy castings according to claim 1, characterized in that: The lifting mechanism (2) comprises a guide rod (201) vertically fixed to the upper surface of the base (1); a lifting block (202) is slidably sleeved on the guide rod (201); the casting tank (3) is fixed on the lifting block (202); a screw rod (203) is vertically inserted into the lifting block (202), and the screw rod (203) is threadedly connected to the lifting block (202); the lower end of the screw rod (203) is rotatably connected to the upper surface of the base (1); a first pulley (204) is fixedly sleeved on the lower end of the screw rod (203); the first pulley (204) is connected to a second pulley (205) through a synchronous belt drive; the second pulley (205) is fixedly sleeved on the output shaft of a first motor (206); and the first motor (206) is vertically fixed to the base (1).

3. The continuous automatic die-casting device for aluminum alloy castings according to claim 1, characterized in that: The rotating mechanism (5) comprises a second motor (501) vertically fixed on the base (1) and a rotating shaft (502) vertically rotatably connected to the top wall of the coolant storage tank (4); the output shaft of the second motor (501) is coaxially fixed with a transmission shaft (503); the upper end of the transmission shaft (503) is fixedly sleeved with a third pulley (504); the third pulley (504) is connected to a fourth pulley (505) through a synchronous belt drive; the fourth pulley (505) is fixedly sleeved on the outer periphery of the rotating shaft (502); and a support plate (506) is horizontally fixed to the upper end of the rotating shaft (502).

4. The continuous automatic die-casting device for aluminum alloy castings according to claim 3, characterized in that: The lower end of the rotating shaft (502) passes through the top wall of the cooling liquid storage box (4) and extends to the bottom of the cooling liquid storage box (4); the cooling mechanism (6) comprises an infusion channel (601) vertically opened inside the rotating shaft (502) and a cooling box (602) fixedly inserted on the support plate (506); the lower end of the infusion channel (601) passes through the lower end surface of the rotating shaft (502); the die-casting mold body (7) is fixed to the top of the cooling box (602); a delivery pipe (603) is fixed to the bottom wall of the cooling box (602); one end of the delivery pipe (603) away from the cooling box (602) is fixed to the circumferential side wall of the rotating shaft (502); the cooling box (602) is connected to the infusion channel (601) through the delivery pipe (603).

5. The continuous automatic die-casting device for aluminum alloy castings according to claim 4, characterized in that: The top of the refrigeration box (602) is an open structure, and the top wall of the die-casting mold body (7) is in contact with the top opening of the refrigeration box (602); the coolant control mechanism (8) includes a movable column (801) vertically inserted into the bottom wall of the refrigeration box (602); the movable column (801) is slidably matched with the refrigeration box (602); a partition (802) is horizontally fixed to the top of the movable column (801); and the edge of the partition (802) is in slidable contact with the inner wall of the refrigeration box (602).

6. The continuous automatic die-casting device for aluminum alloy castings according to claim 5, characterized in that: The driving mechanism (9) comprises a supporting plate (901) fixed horizontally on a rotating shaft (502); the upper surface of the supporting plate (901) is vertically rotatably connected to a plurality of positioning shafts (902); a cylindrical cam (903) is coaxially fixed to the upper ends of the plurality of positioning shafts (902); a connecting column (904) is horizontally slidably inserted into the working grooves of the plurality of cylindrical cams (903); a limiting sleeve (905) is vertically fixed to one end of the plurality of connecting columns (904) away from the cylindrical cam (903); and the plurality of limiting sleeves (905) are respectively fixedly sleeved on the lower ends of the plurality of movable columns (801).

7. The continuous automatic die-casting device for aluminum alloy castings according to claim 6, characterized in that: An incomplete gear (906) is horizontally arranged below the bearing plate (901); the incomplete gear (906) is coaxially sleeved on the outer periphery of the rotating shaft (502), and the incomplete gear (906) and the rotating shaft (502) are clearance-matched; the lower surface of the incomplete gear (906) is fixed to the top wall of the coolant storage box (4) through a plurality of brackets (907); a plurality of gears (908) are horizontally arranged on the circumference of the incomplete gear (906); and the plurality of gears (908) are respectively fixedly sleeved on the lower end portions of a plurality of positioning shafts (902).

8. The continuous automatic die-casting device for aluminum alloy castings according to claim 6 or 7, characterized in that: A plurality of tensioning springs (909) are vertically arranged above the plurality of limit sleeves (905); the plurality of tensioning springs (909) are respectively sleeved on the outer circumference of the plurality of movable columns (801), and the upper and lower ends of each tensioning spring (909) are respectively fixed on the corresponding limit sleeves (905) and the refrigeration box (602).

9. The continuous automatic die-casting device for aluminum alloy castings according to claim 8, characterized in that: A limiting frame (10) is arranged below the support plate (506); the limiting frame (10) comprises a limiting guide rail (1001) of a semicircular structure; the limiting guide rail (1001) is arranged coaxially with the rotating shaft (502), and the limiting guide rail (1001) is arranged horizontally below the refrigeration box (602); a plurality of mounting columns (1002) are vertically fixed on the lower surface of the limiting guide rail (1001); the lower ends of the plurality of mounting columns (1002) are all fixed on the top wall of the coolant storage box (4); the lower end surfaces of the plurality of movable columns (801) are all embedded with balls (11); any of the balls (11) can roll on the limiting guide rail (1001).

10. A die-casting process of the continuous automatic die-casting device for aluminum alloy castings as claimed in claim 9, characterized in that: The steps include: Step 1: When any die-casting mold body (7) moves to the bottom of the casting pot (3), the first motor (206) drives the screw (203) to rotate via the second pulley (205) and the first pulley (204), so that the screw (203) drives the casting pot (3) to move downward via the lifting block (202), so that the casting port of the casting pot (3) is inserted into the injection port of the die-casting mold body (7), and the casting pot (3) starts to inject the hot molten liquid aluminum alloy into the die-casting mold body (7); Step 2: After the pouring of the die-casting mold body (7) is completed, the pouring tank (3) stops pouring, and the lifting block (202) drives the pouring tank (3) to move upward to reset, and then the second motor (501) drives the rotating shaft (502) to start rotating through the transmission shaft (503), the third pulley (504) and the fourth pulley (505), so that the rotating shaft (502) drives the die-casting mold body (7) that has just been poured to rotate horizontally by 90° through the support plate (506), and the gear (908) corresponding to the die-casting mold body (7) meshes with the incomplete gear (906). The gear (908) is engaged and rolls on the incomplete gear (906), and then the gear (908) drives the cylindrical cam (903) to rotate via the positioning shaft (902), so that the cylindrical cam (903) drives the partition (802) to move upward via the connecting column (904), the limiting sleeve (905) and the movable column (801), so that the coolant in the coolant storage box (4) is sucked into the refrigeration box (602) below the die-casting mold body (7) that has just been filled through the infusion channel (601) and the delivery pipe (603), and the die-casting mold body (7) that has just been filled begins to be cooled; Step 3: The die-casting mold body (7) is driven to continue to rotate horizontally by 90° through the rotating shaft (502) via the supporting plate (506), so that the ball (11) on the lower end of the movable column (801) corresponding to the die-casting mold body (7) rolls on the limiting guide rail (1001), and at this time, the gear (908) corresponding to the die-casting mold body (7) is in a non-meshing state with the incomplete gear (906); Step 4: After repeating step 3 once, the cooling treatment of the poured die-casting mold body (7) is completed. At this time, the formed aluminum alloy casting is removed from the die-casting mold body (7), and then the die-casting mold body (7) is driven by the rotating shaft (502) through the support plate (506) to continue to rotate horizontally by 90°, so that the ball (11) on the lower end of the movable column (801) corresponding to the die-casting mold body (7) is separated from the limiting guide rail (1001), and at this time, the die-casting mold body (7) is separated from the die-casting mold body (7). ) and the gear (908) corresponding to the incomplete gear (906) mesh with each other, so that the gear (908) drives the partition (802) to move downwards via the positioning shaft (902), the cylindrical cam (903), the connecting column (904), the limiting sleeve (905) and the movable column (801), so as to press the cooling liquid in the refrigeration box (602) below the die-casting mold body (7) from which the aluminum alloy casting has been taken out into the interior of the cooling liquid storage box (4) via the liquid infusion channel (601) and the delivery pipe (603); Step 5: Repeat steps 1 to 4 to achieve continuous die-casting of aluminum alloy castings.

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