Aluminum alloy die-casting machine facilitating automatic demolding

Abstract

The invention provides an aluminum alloy die-casting machine facilitating automatic demolding, and relates to the technical field of die-casting machines, the aluminum alloy die-casting machine comprises two symmetrically arranged machine shells, and two L-shaped driving rods are symmetrically fixed to a movable mold; two assembly holes are symmetrically formed in the static mold in a penetrating manner; the tail end part of the demolding top shaft is fixedly sleeved with a baffle ring, the head end part of the L-shaped driving rod is in sliding fit with the part, located between the baffle ring and the check ring, of the demolding top shaft, and the part, located between the L-shaped driving rod and the baffle ring, of the demolding top shaft is sleeved with a spring in a compressed mode; an annular sealing table is integrally formed in an opening in one end of the assembly hole, and when the demolding jacking shaft slides away from the movable mold, the sealing disc abuts against and makes contact with the annular sealing table in a jacking mode. Through the spring on the demolding jacking shaft, the L-shaped driving rod can indirectly act the strong sliding jacking force of the movable mold on the sealing disc, and the sealing disc can be in tight jacking and abutting contact with the annular sealing table by virtue of the strong jacking force, so that stable and effective sealing is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting machines, in particular to an aluminum alloy die-casting machine with convenient automatic demoulding. Background Art

[0002] In the actual aluminum alloy die-casting production process, various problems often occur in the demoulding link, which brings many troubles to production. Therefore, it is necessary to design an aluminum alloy die-casting machine that is convenient for automatic demoulding to solve these problems.

[0003] In the prior art, automatic demoulding technology for die-casting machines has been widely studied. For example, the invention patent application number CN202410896656.X discloses a die-casting machine demoulding device, which relates to the field of die-casting machine technology and includes: a material receiving mechanism, the material receiving mechanism including a die-casting seat, the top surface of which is provided with a guide groove; a lifting mechanism including a column and a lifting block; a die-casting mechanism including a die-casting head; a ejection mechanism including a die-casting groove and a tray; a material transfer mechanism including a material transfer ring slidably connected to the top surface of the die-casting seat, a through-hole extending through the middle of the material transfer ring, and a rotating cavity provided within the material transfer ring; a spraying mechanism including a rotating gear rotatably connected to the rotating cavity, a spraying ring rotatably connected to the rotating cavity, a bevel gear ring provided on the outer side of the spraying ring, the rotating gear meshingly connected to the bevel gear ring, and a plurality of spray heads installed in an array on the inner side of the spraying ring. This application has the advantages of better demoulding and transferring workpieces, avoiding damage to the workpieces, and automatically spraying a release agent.

[0004] The demoulding and ejection components on the existing die-casting machines require additional configuration of a driving force unit and an automated control system for the driving force unit to control the driving implementation. The additional configuration of the driving force unit and the automated control system will increase the overall cost and operation and maintenance costs of the die-casting machine, and reduce the cost-effectiveness and market competitiveness of the die-casting machine. Summary of the Invention

[0005] In view of this, the present invention provides an aluminum alloy die-casting machine with convenient automatic demoulding to solve the problem that additional configuration of a driving force unit and an automatic control system will increase the overall cost of the die-casting machine and the cost of operation and maintenance.

[0006] The technical solution proposed by the present invention is: an aluminum alloy die-casting machine with convenient automatic demoulding, specifically comprising two symmetrically arranged housings, four track shafts symmetrically fixedly connected between the two housings, static molds fixed to the four track shafts in the form of sliding assembly, and movable molds slidably mounted on the four track shafts; Two L-shaped driving rods are symmetrically fixed on the movable mold; two assembly holes are symmetrically opened on the static mold, and a demoulding top shaft is slidably installed in each of the two assembly holes, a sealing disk is fixedly connected to the head end of the demoulding top shaft, and a retaining ring is fixedly connected to the outer periphery of the demoulding top shaft; the tail end part of the demoulding top shaft is fixedly sleeved with a retaining ring, the head end part of the L-shaped driving rod slides with the part of the demoulding top shaft located between the retaining ring and the retaining ring, and the part of the demoulding top shaft located between the L-shaped driving rod and the retaining ring is compressed and sleeved with a spring; an annular sealing platform is integrally formed in the opening at one end of the assembly hole, and when the demoulding top shaft slides away from the movable mold, the sealing disk and the annular sealing platform are pressed against each other.

[0007] Furthermore, it also includes a rectangular support frame, and two groups of U-shaped ground frames are symmetrically welded on the bottom side of the rectangular support frame, and a trolley-shaped material receiving box is arranged between the two groups of U-shaped ground frames. The two machine casings are respectively fixedly installed on the top side of the two ends of the rectangular support frame.

[0008] Furthermore, a driving oil cylinder is fixedly installed inside the housing, and the head end of the driving oil cylinder piston rod is fixedly connected to the central part of the movable mold; Another part of the casing is fixedly installed with a die-cast oil cylinder, and the piston rod of the die-cast oil cylinder is tightly slidably matched with the inner hole of the injection pipe.

[0009] Furthermore, a liquid injection hole is provided through the center of the static mold, and a liquid injection pipe is fixedly connected to the outer opening of the liquid injection hole; A liquid inlet pipe is welded to the tail end of the liquid injection pipe, and the liquid inlet pipe is connected to an external aluminum alloy solution supply system through an external temperature-resistant pipeline.

[0010] Furthermore, the retaining ring is fixedly connected to a track ring coaxially arranged therewith, the track ring is sleeved and fitted with the tail end of the demoulding top shaft, and a driving ring is rotatably sleeved on the outer circumference of the track ring; Two plug rods are symmetrically and slidably mounted on the retaining ring in the form of spring push, and the opposite ends of the two plug rods are plugged into the tail end of the demoulding top shaft; Two connecting rods arranged in parallel are rotatably connected between the two insertion rods and the driving ring.

[0011] Furthermore, two short connecting columns are symmetrically welded on the side surface of a circular ring of the retaining ring, and two groups of limiting ear plates are symmetrically welded on the outer circumference of the driving ring, and the head ends of the two short connecting columns are welded and fixed to the two limiting ear plates close to them.

[0012] Furthermore, the driving ring is rotationally limited between two limiting lugs in each set of limiting lugs.

[0013] Furthermore, two positioning lugs are symmetrically welded on a circular side surface of the retaining ring, and two insertion rods are correspondingly inserted and slidably engaged with the two positioning lugs; The tail ends of the two connecting rods are rotatably connected to the ends of the two inserting rods that are opposite to each other, and the head ends are rotatably connected to the outer periphery of the driving ring.

[0014] Furthermore, the tail end of the demoulding top shaft is symmetrically provided with two recessed grooves, and a plug hole is provided through the portion of the demoulding top shaft located between the two recessed grooves, and the plug rod is plugged into the demoulding top shaft through the plug hole; The insert rod is integrally formed with two symmetrically arranged baffles. The spring for pushing the insert rod is sleeved on the insert rod and is compressed and clamped between the baffles and the positioning ear block.

[0015] The aluminum alloy die-casting machine provided by the present invention is convenient for automatic demoulding and has the following beneficial effects: First, through the coordinated power transmission of two L-shaped drive rods, two retaining rings, and springs on two demoulding ejector shafts, when the movable mold and the static mold slide open and close before and after the die-casting operation, the two demoulding ejector shafts can be driven to slide synchronously, automatically controlling the ejection and demoulding components to complete the ejection and removal operations of the molded product and the sealing operation between it and the die-casting mold. This eliminates the need to configure an additional drive unit for the ejection and demoulding components to perform the above two operations, and eliminates the need to configure an additional automatic control system for the drive unit, which helps to reduce the cost of manufacturing and operating and maintenance costs of the die-casting machine, and improve its cost performance and market competitiveness.

[0016] Second, through the spring on the demoulding top shaft, the L-shaped driving rod can indirectly apply the powerful sliding thrust of the movable mold to the sealing disk. The sealing disk can rely on this powerful top pressure to tightly contact with the top pressure of the annular sealing platform to achieve stable and effective sealing.

[0017] 3. The design of the present invention that indirectly pushes the sealing disk to implement sealing through a spring can avoid the error caused by the unsatisfactory dimensional accuracy of the retaining ring by directly pushing the retaining ring through an L-shaped driving rod, which causes the head end of the L-shaped driving rod to fail to make close pressing contact with the retaining ring when the movable mold and the static mold are mated with the mating mold, and fail to indirectly apply strong pushing pressure to the sealing disk and drive the sealing disk to implement tight and effective sealing, which helps to ensure the sealing effect of the sealing disk and ensure the normal and effective implementation of its automatic pushing and sealing function.

[0018] Fourth, the two insertion rods are installed by pushing with the springs on them. The retaining ring can be loosened by simply sliding the two insertion rods backwards and pulling them out of the sockets, and the retaining ring can be disassembled conveniently and efficiently. The two insertion rods, two connecting rods and a driving ring are connected together to form a double crank slider mechanism. Through the double crank slider mechanism, the driving ring can be twisted to push and drive the two insertion rods to slide backwards and pull out synchronously, completing the loosening operation of the retaining ring at one time, which helps to further improve the convenience and efficiency of the retaining ring disassembly operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0020] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached figure: Figure 1 Shows a schematic diagram of the overall structure of the present invention; Figure 2 A schematic diagram showing the installation positions of the movable mold and the static mold in the present invention is shown; Figure 3 Shows a schematic diagram of the overall bottom side structure of the present invention; Figure 4 The figure shows the structure of the static mold and the movable mold in the present invention; Figure 5 Shows a schematic structural diagram of the static mold in the present invention; Figure 6 A schematic diagram of a cutaway state of the static mold in the present invention is shown; Figure 7 The schematic diagram of the structure of the demoulding ejector shaft in the present invention is shown; Figure 8 The present invention shows Figure 7 A schematic diagram of the enlarged structure of part A; Figure 9 A schematic diagram of the disassembled state of the drive ring and the insertion rod in the present invention is shown.

[0022] List of reference numerals: 1. Rectangular support frame; 101. U-shaped ground contact frame; 2. Casing; 201. Track shaft; 2011. Fixing ring; 3. Movable mold; 301. L-shaped driving rod; 4. Static mold; 401. Assembly hole; 402. Annular sealing platform; 403. Liquid injection hole; 5. Liquid injection pipe; 501. Liquid inlet pipe; 6. Demolding top shaft; 601. Sealing disk; 602. Retaining ring; 603. Sink; 604. Socket; 7. Retaining ring; 701. Track ring; 7011. Limiting ear plate; 702. Driving ring; 703. Short connecting column; 704. Positioning ear block; 8. Insert rod; 801. Connecting rod; 802. Baffle; 9. Driving cylinder; 10. Die-cast oil cylinder; 11. Material receiving box. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Please refer to Figures 1 to 9 , Example 1: This embodiment provides an aluminum alloy die-casting machine that facilitates automatic demoulding, comprising two symmetrically arranged housings 2, four track shafts 201 symmetrically fixedly connected between the two housings 2, a stationary die 4 being fixed to the four track shafts 201 in a sliding assembly, and a movable die 3 being slidably mounted on the four track shafts 201; Two L-shaped driving rods 301 are symmetrically fixed in the middle positions of the two vertical sides of the movable mold 3; two assembly holes 401 are symmetrically opened at the two end positions of the middle part of the static mold 4, and a demoulding top shaft 6 is slidably installed in the two assembly holes 401. The head end of the demoulding top shaft 6 is fixedly connected to a sealing disk 601, and the outer periphery of the demoulding top shaft 6 is fixedly connected to a retaining ring 602; the tail end part of the demoulding top shaft 6 is fixedly sleeved with a retaining ring 7, the head end part of the L-shaped driving rod 301 is slidably matched with the part of the demoulding top shaft 6 located between the retaining ring 7 and the retaining ring 602, and the part of the demoulding top shaft 6 located between the L-shaped driving rod 301 and the retaining ring 7 is compressed and sleeved with a spring; an annular sealing platform 402 is integrally formed in the opening at one end of the assembly hole 401. When the demoulding top shaft 6 slides away from the movable mold 3, the sealing disk 601 and the annular sealing platform 402 are pressed against each other.

[0025] Preferably, it also includes a rectangular support frame 1, and two groups of U-shaped ground frames 101 are symmetrically welded on the bottom side of the rectangular support frame 1, and a trolley-shaped material receiving box 11 is provided between the two groups of U-shaped ground frames 101. The two machine casings 2 are respectively fixedly installed on the top side of the two ends of the rectangular support frame 1.

[0026] Preferably, a driving cylinder 9 is fixedly installed inside one part of the casing 2, and the head end of the piston rod of the driving cylinder 9 is fixedly connected to the central part of the movable mold 3; a die-casting cylinder 10 is fixedly installed inside another part of the casing 2, and the piston rod of the die-casting cylinder 10 is tightly slidably fitted with the inner hole of the injection tube 5.

[0027] Preferably, an injection hole 403 is opened through the center of the static mold 4, and an injection tube 5 is fixedly connected to the outer opening of the injection hole 403; a liquid inlet pipe 501 is welded to the tail end of the injection tube 5, and the liquid inlet pipe 501 is connected to the external aluminum alloy solution supply system through an external temperature-resistant pipe.

[0028] Preferably, a fixing ring 2011 is welded onto the track shaft 201 , and the fixing ring 2011 is fixedly connected to the static mold 4 by bolts.

[0029] Implementation 2: This implementation is based on implementation 1 and adds the following content compared to implementation 1: The retaining ring 7 is fixedly connected to a track ring 7 coaxially arranged therewith, and the track ring 701 is sleeved and fitted with the tail end portion of the demoulding top shaft 6, and a drive ring 702 is rotatably sleeved on the outer periphery of the track ring 701; two insertion rods 8 are symmetrically and slidingly installed on the retaining ring 7 in the form of spring push, and the opposite ends of the two insertion rods 8 are inserted and fitted with the tail end portion of the demoulding top shaft 6; two parallel connecting rods 801 are rotatably connected between the two insertion rods 8 and the drive ring 702.

[0030] Preferably, two short connecting columns 703 are symmetrically welded on the side surface of a circular ring of the retaining ring 7, and two groups of limiting ear plates 7011 are symmetrically welded on the outer periphery of the driving ring 702, which are arranged in groups of two. The head ends of the two short connecting columns 703 are welded and fixed to the two limiting ear plates 7011 close to them.

[0031] Preferably, the driving ring 702 is rotationally limited between two limiting ear plates 7011 in each set of limiting ear plates 7011 .

[0032] Preferably, two positioning ear blocks 704 are symmetrically welded on the side surface of a circular ring of the retaining ring 7, and the two insertion rods 8 slide through and fit with the two positioning ear blocks 704; the tail ends of the two connecting rods 801 are rotatably connected to the ends of the two insertion rods 8 that are back to back, and their head ends are rotatably connected to the outer periphery of the driving ring 702.

[0033] Preferably, two recessed grooves 603 are symmetrically provided at the tail end of the demoulding top shaft 6, and a socket 604 is provided through the portion of the demoulding top shaft 6 located between the two recessed grooves 603, through which the insertion rod 8 is plugged into and fitted with the demoulding top shaft 6; two symmetrically arranged baffles 802 are integrally formed on the insertion rod 8, and a spring for pushing the insertion rod 8 is mounted on the insertion rod 8 and is compressed and clamped between the baffle 802 and the positioning ear block 704.

[0034] The following is a detailed explanation of the specific details, implementation steps, functions and interrelationships of the above features, as well as their role in implementing this technical solution: The driving cylinder 9 can extend and retract to drive the movable mold 3 to slide toward or away from the static mold 4, controlling the movable mold 3 to press and dock with the static mold 4 or to separate and disengage. When the movable mold 3 and the static mold 4 are pressed and docked together, they form a complete set of die-casting molds. When the movable mold 3 is driven to slide away from the static mold 4 and separate from the static mold 4, the two L-shaped driving rods 301 slide synchronously with the movable mold 3, and the head ends thereof come into contact with the two retaining rings 602, and push and drive the two demoulding ejector shafts 6 to slide toward the movable mold 3, ejecting the formed aluminum alloy product from the cavity of the static mold 4, completing the demoulding and taking out of the aluminum alloy product (refer to Figure 1 and Figure 4 ), when the demoulding top shaft 6 is performing ejection and unloading of the aluminum alloy product, the sealing disk 601 at the head end thereof is in contact with the aluminum alloy product, and the demoulding top shaft 6 completes the ejection and unloading of the aluminum alloy product through the sealing disk 601; when the movable mold 3 is driven to be pressed and docked with the static mold 4, and the aluminum alloy product is die-casted, the two L-shaped driving rods 301 follow the movable mold 3 to slide synchronously, and the head end portion thereof is pushed by the springs on the two demoulding top shafts 6 to drive the two demoulding top shafts 6 to slide away from the movable mold 3. In this process, the two sealing disks 601 follow the two demoulding top shafts 6 to be in contact with the two annular sealing platforms 402. When the two sealing disks 601 are in contact with the two annular sealing platforms 402, the sliding gap between the two demoulding top shafts 6 and the two assembly holes 401 can be sealed to ensure that the movable mold 3 and the static mold 4 are pressed and docked together to form a die-casting die. The sealing performance of the die-casting process is achieved when the die-casting mold is formed; the demoulding top shaft 6 is the ejection demoulding component, and the sealing of the sliding gap between the demoulding top shaft 6 and the assembly hole 401 is the seal between the ejection demoulding component and the die-casting mold. The power is transmitted by the cooperation of two L-shaped drive rods 301, two retaining rings 602 and springs on the two demoulding top shafts 6. When the movable mold 3 and the static mold 4 slide open and close before and after the die-casting operation, the two demoulding top shafts 6 can be driven to slide synchronously, and the ejection demoulding component is automatically controlled to complete the ejection and ejection operation of the molded product and the sealing operation between it and the die-casting mold. This can eliminate the need to additionally configure a drive unit for the ejection demoulding component to perform the above two operations, and eliminate the need to additionally configure an automatic control system for the drive unit, which helps to reduce the cost and operation and maintenance costs of the die-casting machine, and improve its cost performance and market competitiveness.

[0035] Since when the movable mold 3 is separated from the static mold 4 for demolding and material removal, the distance between the movable mold 3 and the static mold 4 is greater than the length of the demolding top shaft 6 slidingly protruding from the static mold 4, and then when the movable mold 3 slides toward the static mold 4 for mold closing, the L-shaped drive rod 301 will drive the sealing disk 601 to first contact and seal with the annular sealing platform 402. In this process, when the sealing disk 601 contacts and contacts the annular sealing platform 402, the demolding top shaft 6 is blocked and stops sliding. At this time, the L-shaped drive rod 301 begins to follow the continuous sliding of the movable mold 3 to compress the spring on the demolding top shaft 6. When the movable mold 3 and the static mold 4 are docked and pressed together to complete the mold closing, the spring is compressed to the maximum state. At this time, the top pressure of the L-shaped drive rod 301 on the sealing disk 601 through the spring reaches the maximum state. , the sealing disk 601 can rely on the strong pushing pressure to tightly press against the annular sealing platform 402 to perform stable and effective sealing; the design of the present invention that indirectly pushes the sealing disk 601 to implement sealing through a spring can avoid the error caused by the dimensional accuracy of the retaining ring 7 not meeting the standard when the movable mold 3 and the static mold 4 are engaged with each other, and the head end part of the L-shaped driving rod 301 cannot be in close pressing contact with the retaining ring 7, and cannot indirectly apply strong pushing pressure to the sealing disk 601 and drive the sealing disk 601 to implement tight and effective sealing, which helps to ensure the sealing effect of the sealing disk 601 and ensure the normal and effective implementation of its automatic pushing and sealing function.

[0036] The retaining ring 7 can be used to limit the spring on the demoulding top shaft 6, and it can be used in conjunction with the sealing disk 601 to block the demoulding top shaft 6 and limit it to the static mold 4. The retaining ring 7 can be loosened and removed from the tail end portion of the demoulding top shaft 6 to release the blocking limit on the demoulding top shaft 6, and the deformed demoulding top shaft 6 can be extracted from the static mold 4 for disassembly, maintenance or replacement; when the head end portion of the two insertion rods 8 is plugged into the socket 604, the retaining ring 7 can be plugged and positioned on the tail end portion of the demoulding top shaft 6, and the two insertion rods 8 are used to Spring push installation, only need to slide the two insertion rods 8 backward and pull them out of the socket 604 to loosen the retaining ring 7, and the retaining ring 7 can be conveniently and efficiently disassembled. The two insertion rods 8, two connecting rods 801 and a drive ring 702 are connected together to form a set of double crank slider mechanism. Through the double crank slider mechanism, the twisting drive ring 702 can push and drive the two insertion rods 8 to slide backward and pull out synchronously, completing the loosening operation of the retaining ring 7 at one time, which helps to further improve the convenience and efficiency of the removal operation of the retaining ring 7.

[0037] The working principle of this embodiment is as follows: the injection tube 5 is connected to the cavity inside the die-casting mold through the injection hole 403; when in use, the movable mold 3 and the static mold 4 are first aligned with each other, and then the aluminum alloy solution supply system is controlled to add the aluminum alloy solution into the injection tube 5 through the liquid inlet tube 501, and then the piston rod of the die-casting cylinder 10 is controlled to extend at high speed, and the aluminum alloy solution in the injection tube 5 is injected into the cavity inside the die-casting mold in a high-temperature, high-pressure and rapid manner, and then the aluminum alloy solution in the cavity is cooled. When the aluminum alloy solution is cooled and formed into an aluminum alloy product in the cavity, the movable mold 3 is driven to separate from the static mold 4, and the die-casting mold is decomposed and opened. When the movable mold 3 slides and separates from the static mold 4, the demolding top shaft 6 is driven by the L-shaped driving rod 301 to eject the formed aluminum alloy product stored in the cavity of the static mold 4 out of the mold. After being ejected, the formed aluminum alloy product is unloaded into the receiving box 11 for temporary storage, and from then on, a die-casting operation is completed.

[0038] In this article, there are several points to note: 1. The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0039] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0040] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An aluminum alloy die-casting machine with convenient automatic demoulding, comprising two symmetrically arranged housings, four track shafts symmetrically fixedly connected between the two housings, a static mold fixed to the four track shafts in a sliding assembly, and a movable mold slidably mounted on the four track shafts; It is characterized in that Two L-shaped driving rods are symmetrically fixed on the movable mold; two assembly holes are symmetrically opened on the static mold, and a demoulding top shaft is slidably installed in each of the two assembly holes, a sealing disk is fixedly connected to the head end of the demoulding top shaft, and a retaining ring is fixedly connected to the outer periphery of the demoulding top shaft; the tail end part of the demoulding top shaft is fixedly sleeved with a retaining ring, the head end part of the L-shaped driving rod slides with the part of the demoulding top shaft located between the retaining ring and the retaining ring, and the part of the demoulding top shaft located between the L-shaped driving rod and the retaining ring is compressed and sleeved with a spring; an annular sealing platform is integrally formed in the opening at one end of the assembly hole, and when the demoulding top shaft slides away from the movable mold, the sealing disk and the annular sealing platform are pressed against each other.

2. The aluminum alloy die-casting machine with convenient automatic demoulding according to claim 1, characterized in that: It also includes a rectangular support frame, and two groups of U-shaped ground frames are symmetrically welded on the bottom side of the rectangular support frame, and a trolley-shaped material receiving box is arranged between the two groups of U-shaped ground frames. The two machine casings are respectively fixedly installed on the top side of the two ends of the rectangular support frame.

3. The aluminum alloy die-casting machine with convenient automatic demoulding according to claim 1, characterized in that: A driving oil cylinder is fixedly installed inside the casing, and the head end of the driving oil cylinder piston rod is fixedly connected to the central part of the movable mold; Another part of the casing is fixedly installed with a die-cast oil cylinder, and the piston rod of the die-cast oil cylinder is tightly slidably matched with the inner hole of the injection pipe.

4. The aluminum alloy die-casting machine with convenient automatic demoulding according to claim 1, characterized in that: A liquid injection hole is provided through the center of the static mold, and a liquid injection pipe is fixedly connected to the outer opening of the liquid injection hole; A liquid inlet pipe is welded to the tail end of the liquid injection pipe, and the liquid inlet pipe is connected to an external aluminum alloy solution supply system through an external temperature-resistant pipeline.

5. The aluminum alloy die-casting machine with convenient automatic demoulding according to claim 1, characterized in that: The retaining ring is fixedly connected to a track ring coaxially arranged therewith, the track ring is sleeved and fitted with the tail end of the demoulding top shaft, and a driving ring is rotatably sleeved on the outer periphery of the track ring; Two plug rods are symmetrically and slidably mounted on the retaining ring in the form of spring push, and the opposite ends of the two plug rods are plugged into the tail end of the demoulding top shaft; Two connecting rods arranged in parallel are rotatably connected between the two insertion rods and the driving ring.

6. The aluminum alloy die-casting machine with convenient automatic demoulding according to claim 5, characterized in that: Two short connecting columns are symmetrically welded on the side surface of a circular ring of the retaining ring, and two groups of limiting ear plates are symmetrically welded on the outer circumference of the driving ring, and the head ends of the two short connecting columns are welded and fixed to the two limiting ear plates close to them.

7. The aluminum alloy die-casting machine with convenient automatic demoulding according to claim 6, characterized in that: The driving ring is rotated limitedly between two limiting lugs in each set of limiting lugs.

8. The aluminum alloy die-casting machine with convenient automatic demoulding according to claim 5, characterized in that: Two positioning lugs are symmetrically welded on the side surface of a circular ring of the retaining ring, and two insertion rods are correspondingly inserted and slidably engaged with the two positioning lugs; The tail ends of the two connecting rods are rotatably connected to the ends of the two inserting rods that are opposite to each other, and the head ends are rotatably connected to the outer periphery of the driving ring.

9. The aluminum alloy die-casting machine with convenient automatic demoulding according to claim 8, characterized in that: The tail end of the demoulding top shaft is symmetrically provided with two recessed grooves, and the portion of the demoulding top shaft located between the two recessed grooves is penetrated by a plug hole, and the plug rod is plugged into the demoulding top shaft through the plug hole; The insert rod is integrally formed with two symmetrically arranged baffles. The spring for pushing the insert rod is sleeved on the insert rod and is compressed and clamped between the baffles and the positioning ear block.

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