Die casting machine convenient to demould

Abstract

The utility model discloses a die-casting machine convenient to demould, which comprises a frame, an upper mould, a lower mould, a jacking oil cylinder and an auxiliary jacking component, the upper mould is arranged on the frame, the lower mould is arranged on the frame, a mould groove is formed on the upper surface of the lower mould, a first guide hole and a plurality of second guide holes are arranged on the bottom surface of the mould groove, the jacking oil cylinder is arranged on the frame, and the auxiliary jacking component is arranged on the frame. A first ejector rod is arranged at the top end of the jacking oil cylinder and penetrates through the first guide hole, the first ejector rod is provided with a limiting piece, the auxiliary jacking assembly comprises a plurality of second ejector rods and a plurality of elastic pieces, the second ejector rods penetrate through the second guide holes respectively, the elastic pieces are arranged between the lower die and the second ejector rods respectively, and the limiting piece is arranged between the elastic pieces and the second ejector rods. An abutting part is arranged at the bottom end of the second ejector rod, and the limiting piece abuts against the top end of the abutting part. According to the utility model, a single jacking oil cylinder can be used for jacking out a casting part, the cost is lower, and a plurality of positions of the casting part can be jacked, so that the casting part is uniformly stressed and is not easy to roll over and damage.

Description

TECHNICAL FIELD

[0001] The utility model relates to die casting technical field, especially a die casting machine convenient to demould. BACKGROUND

[0002] Part of die casting machine includes frame, lower mould and upper mould, the upper mould is located above the lower mould, the upper mould and the lower mould can be close to each other or far away, the upper mould and the lower mould can be enclosed to form a mould cavity when being attached. Pouring die casting liquid into the mould cavity, the die casting liquid can form a casting part after cooling, then the upper mould and the lower mould are far away, and demoulding is carried out.

[0003] In the related art, demoulding is generally carried out by using a jacking oil cylinder, wherein the lower mould is provided with a guide hole penetrating upward and downward, the top rod of the jacking oil cylinder is arranged in the guide hole, after the die casting forms a casting part and the upper mould and the lower mould are separated, the jacking oil cylinder controls the top rod to rise, and the mould can be ejected. However, it is found in use that when the casting part is heavy or the adhesion between the casting part and the lower mould is large, one jacking oil cylinder is difficult to eject the casting part, and the top rod of the jacking oil cylinder can only abut against a single position of the casting part, and then when the casting part is jacked up, the casting part is easy to be turned on its side and damaged due to uneven force. Part of the die casting machine solves the above problem by arranging multiple jacking oil cylinders, and thus the cost is high. SUMMARY

[0004] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a die casting machine convenient to demould, a single jacking oil cylinder cooperates with an auxiliary jacking assembly to eject a casting part, the cost is lower, and the multiple positions of the casting part can be jacked up, so that the casting part is subjected to more uniform force and is not easy to be turned on its side and damaged.

[0005] A die-casting machine for easy demolding according to an embodiment of the present invention includes a frame, an upper mold, a lower mold, a lifting cylinder, and an auxiliary lifting assembly. The upper mold is disposed on the frame, and the lower mold is disposed on the frame and located below the upper mold. A mold groove is formed on the upper surface of the lower mold. The upper mold and the lower mold can move relative to each other vertically. The bottom surface of the mold groove is provided with a through first guide hole and a plurality of through second guide holes. The lifting cylinder is disposed on the frame, and a first push rod is provided at the top of the lifting cylinder. The first push rod passes through the first guide hole, and a limiting member is provided on the side wall of the first push rod. The auxiliary lifting assembly includes a plurality of second push rods and a plurality of springs. The lower mold has multiple second push rods that pass through multiple second guide holes. Multiple elastic elements are disposed between the lower mold and the multiple second push rods to drive the second push rods to move upward. The bottom end of the second push rod is provided with an abutment portion, and the limiting element abuts against the top end of the abutment portion. When the lifting cylinder drives the top end of the first push rod to be flush with the top end of the first guide hole, the top end of the second push rod is flush with the top end of the second guide hole. When the lifting cylinder drives the top end of the first push rod to protrude beyond the top end of the first guide hole, the top end of the second push rod moves under the drive of the elastic elements to protrude beyond the top end of the second guide hole.

[0006] The die-casting machine with convenient demolding according to the embodiments of the present invention has at least the following beneficial effects:

[0007] Before die casting, the lifting cylinder drives the top of the first ejector rod to be flush with the top of the first guide hole. In this case, the top of the second ejector rod is flush with the top of the second guide hole, and the elastic element is compressed. During die casting, the upper mold and the lower mold are brought close together and fitted together. The upper mold can then cover the mold groove to form a mold cavity. Then, die casting liquid is injected into the mold cavity. After the die casting liquid cools, a die casting is formed. Then, the upper mold and the lower mold are moved away from each other, and the lifting cylinder drives the top of the first ejector rod to protrude from the top of the first guide hole. The top of the second ejector rod can also be driven to protrude from the top of the second guide hole under the elastic restoring force of the elastic element. The die casting can then be lifted synchronously by the first ejector rod and multiple second ejector rods. According to the embodiment of the present invention, a die casting machine that facilitates demolding can eject the casting with a single lifting cylinder and an auxiliary lifting assembly, resulting in lower cost. Moreover, it can lift multiple positions of the casting, making the casting more evenly stressed and less prone to tipping over or damage.

[0008] According to some embodiments of the present invention, the limiting member is provided with a plurality of sleeve holes, and is sleeved on the outside of a plurality of second top rods through the plurality of sleeve holes.

[0009] According to some embodiments of the present invention, a plurality of second guide holes are located on the periphery of the first guide hole, and a plurality of second push rods are located on the periphery of the first push rod.

[0010] According to some embodiments of the present invention, a plurality of second guide holes are evenly arranged along the circumference of the first guide hole, and a plurality of second push rods are evenly arranged along the circumference of the first push rod.

[0011] According to some embodiments of the present invention, a first annular recess is provided at the top of the hole wall of the first guide hole, a sealing part is formed at the top of the first push rod, and a first sealing ring is provided at the bottom of the first annular recess. When the top of the sealing part is flush with the top of the first guide hole, the outer wall of the sealing part is in contact with the side wall of the first annular recess, and the bottom of the sealing part abuts against the first sealing ring.

[0012] According to some embodiments of the present invention, a limiting part is formed at the top end of the second push rod, the second guide hole includes a first hole segment and a second hole segment, the first hole segment is located above the second hole segment, the diameter of the first hole segment is larger than the diameter of the second hole segment, the elastic element is set as a helical spring, the elastic element is sleeved on the outside of the second push rod, the top end of the elastic element abuts against the limiting part, and the bottom end of the elastic element abuts against the bottom surface of the first hole segment.

[0013] According to some embodiments of the present invention, the top end of the hole wall of the first hole segment is provided with a second annular recess. When the top end of the limiting part is flush with the top end of the second guide hole, the outer side wall of the limiting part is attached to the side wall of the second annular recess.

[0014] According to some embodiments of the present invention, the bottom end of the second annular recess is provided with a second sealing ring, and when the top end of the limiting part is flush with the top end of the second guide hole, the bottom end of the limiting part abuts against the second sealing ring.

[0015] According to some embodiments of the present invention, the second push rod is provided with a conveying channel, the limiting part is provided with a discharge hole connected to the conveying channel, and the bottom end of the second push rod is provided with a connector connected to the conveying channel, the connector being used to connect to a mold release agent supply device.

[0016] According to some embodiments of the present invention, multiple discharge holes are provided, and the multiple discharge holes are provided on the outer side wall of the limiting part and arranged circumferentially along the limiting part.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and some advantages will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of a die-casting machine for easy demolding according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A partial sectional view;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic diagram showing the second push rod protruding from the top of the second guide hole.

[0023] Icon labels:

[0024] Frame 100; Guide rod 101; Lifting cylinder 102;

[0025] Upper mold 200; Injection tube 201;

[0026] Lower mold 300; mold groove 301; first guide hole 302; second guide hole 303; first annular recess 304; first sealing ring 305; first hole section 306; second hole section 307; second annular recess 308; second sealing ring 309;

[0027] Lifting cylinder 400; First push rod 401; Limiting component 402; Sleeve hole 403; Sealing part 404;

[0028] Auxiliary lifting assembly 500; second lifting rod 501; elastic element 502; abutment part 503; limiting part 504; discharge hole 505; connector 506. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] The following is for reference. Figures 1 to 4 This invention describes a die-casting machine with convenient demolding according to an embodiment of the present invention.

[0034] refer to Figures 1 to 4 As shown, the die-casting machine with convenient demolding according to an embodiment of the present utility model includes a frame 100, an upper mold 200, a lower mold 300, a lifting cylinder 400, and an auxiliary lifting assembly 500.

[0035] The upper mold 200 is mounted on the frame 100, and the lower mold 300 is mounted on the frame 100 and located below the upper mold 200. A mold groove 301 is formed on the upper surface of the lower mold 300. The upper mold 200 and the lower mold 300 can move vertically relative to each other. For example, the frame 100 can have multiple guide rods 101 arranged side-by-side, extending vertically. The upper mold 200 can be slidably fitted onto the guide rods 101, and the lower mold 300 can be fixedly connected to the guide rods 101. A lifting cylinder 102 can be provided at the top of the frame 100, connected to the upper mold 200, to drive the upper mold 200 to rise and fall, thereby allowing the upper mold 200 and the lower mold 300 to move closer and further apart vertically. Alternatively, the upper mold 200 can be fixed, while the lower mold 300 can be raised and lowered, or both the upper mold 200 and the lower mold 300 can be raised and lowered. When the upper mold 200 and the lower mold 300 are fitted together, the upper mold 200 covers the mold groove 301 to form a mold cavity, and then the die casting liquid is injected into the mold cavity. It should be noted that the bottom surface of the upper mold 200 may also be provided with a mold groove 301, and two mold grooves 301 enclose the mold cavity. In addition, the upper mold 200 or the lower mold 300 may be provided with an injection pipe 201 communicating with the mold groove 301. The injection pipe 201 is used to communicate with an external die casting liquid tank for injecting die casting liquid into the mold cavity. The bottom surface of the mold groove 301 is provided with a first guide hole 302 that runs vertically through and multiple second guide holes 303 that run vertically through.

[0036] A lifting cylinder 400 is mounted on the frame 100. A first push rod 401 is located at the top of the lifting cylinder 400. The first push rod 401 passes through a first guide hole 302, and a limiting member 402 is located on the side wall of the first push rod 401. An auxiliary lifting assembly 500 includes multiple second push rods 501 and multiple elastic members 502. The multiple second push rods 501 pass through multiple second guide holes 303, and the multiple elastic members 502 are respectively located between the lower mold 300 and the multiple second push rods 501 to drive the second push rods 501 to move upwards. The bottom end of the second push rod 501 has an abutment portion 503, and the limiting member 402 abuts against the top end of the abutment portion 503.

[0037] Specifically, when the lifting cylinder 400 drives the top end of the first push rod 401 to be flush with the top end of the first guide hole 302, the top end of the second push rod 501 is flush with the top end of the second guide hole 303. In this case, the elastic element 502 is compressed to generate an elastic restoring force. When the lifting cylinder 400 drives the top end of the first push rod 401 to protrude beyond the top end of the first guide hole 302, the top end of the second push rod 501 moves to protrude beyond the top end of the second guide hole 303 under the drive of the elastic restoring force of the elastic element 502.

[0038] Understandably, the limiting member 402 abuts against the top of the abutment portion 503, preventing the second push rod 501 from moving upwards arbitrarily. The elastic member 502 remains in a compressed state, continuously applying an upward force to the second push rod 501, thus preventing it from moving downwards arbitrarily. When the lifting cylinder 400 drives the first push rod 401 upwards, the limiting member 402 on the first push rod 401 moves upwards accordingly. Consequently, the second push rod 501 also moves upwards under the elastic restoring force of the elastic member 502. The second push rod 501 is driven by the elastic member 502, not by the lifting cylinder 400.

[0039] In this invention, before die casting, the lifting cylinder 400 drives the top end of the first ejector rod 401 to be flush with the top end of the first guide hole 302. In this case, the top end of the second ejector rod 501 is flush with the top end of the second guide hole 303, and the elastic element 502 is compressed. During die casting, the upper mold 200 and the lower mold 300 are brought close to each other and fit together. The upper mold 200 can cover the mold groove 301 to form a mold cavity. Then, the die casting liquid is injected into the mold cavity. After the die casting liquid cools and solidifies, a die casting part can be formed. Then, the upper mold 200 and the lower mold 300 are moved away from each other. Then, the lifting cylinder 400 drives the top end of the first ejector rod 401 to protrude from the top end of the first guide hole 302. Under the action of the elastic restoring force of the elastic element 502, the top end of the second ejector rod 501 can also be driven to protrude from the top end of the second guide hole 303. The die casting part can be lifted simultaneously by the first ejector rod 401 and multiple second ejector rods 501.

[0040] According to the present invention, a die-casting machine for easy demolding can eject castings using a single lifting cylinder 400 in conjunction with an auxiliary lifting assembly 500, resulting in lower costs. Furthermore, it can lift multiple positions on the casting, making the force on the casting more even and reducing the risk of tipping over or damage. In addition, the lifting cylinder 400 only needs to drive the first ejector rod 401 for lifting, while the multiple second ejector rods 501 are driven by elastic elements 502, thus requiring less force from the lifting cylinder 400 and making it less prone to damage.

[0041] In some embodiments of this utility model, such as Figure 2 As shown, the limiting member 402 is provided with multiple sleeve holes 403, and is sleeved on the outside of multiple second push rods 501 through the multiple sleeve holes 403. In this embodiment, the limiting member 402 is sleeved on the outside of multiple second push rods 501 through the sleeve holes 403, so that the abutment effect between the limiting member 402 and the abutment portion 503 at the bottom end of the second push rod 501 is better, and thus the limiting is more stable.

[0042] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, multiple second guide holes 303 are located around the first guide hole 302, and multiple second push rods 501 are located around the first push rod 401. This arrangement allows the first push rod 401 and the second push rod 501 to work together to achieve a better lifting effect on the die-casting part, resulting in more even stress distribution on the die-casting part and making it less prone to tipping over and damage.

[0043] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, multiple second guide holes 303 are evenly arranged circumferentially along the first guide hole 302, and multiple second push rods 501 are evenly arranged circumferentially along the first push rod 401. This arrangement allows the first push rod 401 and the second push rod 501 to work together to lift the die-casting part more effectively, resulting in more even stress distribution on the die-casting part and making it less prone to tipping over or damage.

[0044] In some embodiments of this utility model, such as Figure 2As shown, the top of the wall of the first guide hole 302 is provided with a first annular recess 304, the top of the first push rod 401 forms a sealing part 404, and the bottom of the first annular recess 304 is provided with a first sealing ring 305. When the top of the sealing part 404 is flush with the top of the first guide hole 302, the outer wall of the sealing part 404 is in contact with the side wall of the first annular recess 304, and the bottom of the sealing part 404 abuts against the first sealing ring 305. Before injecting the die-casting liquid, the lifting cylinder 400 drives the first push rod 401 to move so that the top of the sealing part 404 is flush with the top of the first guide hole 302, and then the die-casting liquid can be injected. In this case, the outer wall of the sealing part 404 is in contact with the side wall of the first annular recess 304, and the bottom of the first annular recess 304 abuts against the first sealing ring 305. This improves the sealing performance and prevents the die-casting liquid from flowing out of the first guide hole 302, which would affect the die-casting effect and the subsequent sliding of the first push rod 401.

[0045] In some embodiments of this utility model, such as Figures 2 to 4 As shown, the top end of the second push rod 501 forms a limiting part 504. The second guide hole 303 includes a first hole section 306 and a second hole section 307. The first hole section 306 is located above the second hole section 307. The diameter of the first hole section 306 is larger than the diameter of the second hole section 307. The elastic element 502 is set as a helical spring. The elastic element 502 is sleeved on the outside of the second push rod 501. The top end of the elastic element 502 abuts against the limiting part 504, and the bottom end of the elastic element 502 abuts against the bottom surface of the first hole section 306. When the lifting cylinder 400 drives the first push rod 401 to descend until its top end is flush with the top end of the first guide hole 302, the limiting member 402, through its contact with the abutment part 503, drives the second push rod 501 to descend until its top end is flush with the top end of the second guide hole 303. In this case, the helical spring is compressed to generate an elastic restoring force. When the lifting cylinder 400 drives the first push rod 401 to rise, the limiting member 402 rises accordingly, and the second push rod 501 can rise to the top end protruding from the second guide hole 303 under the action of the elastic restoring force of the helical spring.

[0046] In this embodiment, the elastic element 502 is set as a helical spring. The elastic element 502 is sleeved on the outside of the second top rod 501. The top end of the elastic element 502 abuts against the limiting part 504, and the bottom end of the elastic element 502 abuts against the bottom surface of the first hole section 306. The structure is simple, easy to install, has a long service life, and produces good elastic restoring force.

[0047] It should be noted that the elastic element 502 can also be other structures, such as an elastic rubber sleeve, a disc spring, etc.

[0048] In some embodiments of this utility model, such as Figure 3 and Figure 4As shown, the top of the hole wall of the first hole section 306 is provided with a second annular countersunk platform 308. When the top of the limiting part 504 is flush with the top of the second guide hole 303, the outer side wall of the limiting part 504 is in contact with the side wall of the second annular countersunk platform 308. Before the injection of the die-casting liquid, the top of the limiting part 504 is flush with the top of the second guide hole 303. In this case, the outer side wall of the limiting part 504 is in contact with the side wall of the second annular countersunk platform 308. This can improve the sealing performance and prevent the die-casting liquid from flowing out of the second guide hole 303, which would affect the die-casting effect and the subsequent sliding of the second push rod 501.

[0049] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, a second sealing ring 309 is provided at the bottom of the second annular recess 308. When the top of the limiting part 504 is flush with the top of the second guide hole 303, the bottom of the limiting part 504 abuts against the second sealing ring 309. Before the injection of die-casting liquid, the top of the limiting part 504 is flush with the top of the second guide hole 303. In this case, the bottom of the limiting part 504 abuts against the second sealing ring 309, which improves the sealing performance and prevents the die-casting liquid from flowing out of the second guide hole 303, thus affecting the die-casting effect and the subsequent sliding of the second push rod 501.

[0050] In some embodiments of this utility model, such as Figures 1 to 4 As shown, the second push rod 501 is provided with a conveying channel, the limiting part 504 is provided with a discharge hole 505 connected to the conveying channel, and the bottom end of the second push rod 501 is provided with a connector 506 connected to the conveying channel. The connector 506 is used to connect to the mold release agent supply device. When the die casting forms a die casting part, and the lifting cylinder 400 drives the first ejector rod 401 to move upward so that the sealing part 404 protrudes from the first guide hole 302, and the elastic element 502 drives the second ejector rod 501 to move upward so that the limiting part 504 protrudes from the second guide hole 303, the mold release agent can be delivered to the conveying channel through the mold release agent supply device. Then the mold release agent can enter the mold cavity through the discharge hole 505 on the limiting part 504 to further facilitate demolding. Moreover, the conveying channel, discharge hole 505 and connector 506 are all set on the second ejector rod 501, so there is no need to open an additional conveying channel and discharge hole 505 on the lower mold 300 or the upper mold 200. This not only reduces the damage to the lower mold 300 or the upper mold 200, but also makes the processing more convenient and improves the sealing performance.

[0051] In some embodiments of this utility model, such as Figure 3 and Figure 4As shown, multiple discharge holes 505 are provided, located on the outer wall of the limiting part 504 and arranged circumferentially along the limiting part 504. This not only makes the release agent discharge more convenient and uniform, resulting in better discharge and thus better demolding, but also ensures that when the top of the limiting part 504 is flush with the top of the second guide hole 303 during the injection of die-casting liquid, the side wall of the second annular countersunken platform 308 will block the discharge holes 505, thereby preventing die-casting liquid from entering the discharge holes 505 and the conveying channel and causing blockage.

[0052] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A die casting machine with easy demolding, characterized by, The utility model relates to a moulding machine, which comprises a frame, an upper mould arranged on the frame, a lower mould arranged on the frame and below the upper mould, the upper surface of the lower mould being provided with a moulding groove, wherein the upper mould and the lower mould are vertically movable relative to each other, the bottom surface of the moulding groove is provided with a first guide hole and a plurality of second guide holes, a jacking oil cylinder is arranged on the frame, the top end of the jacking oil cylinder is provided with a first jacking rod, the first jacking rod is arranged in the first guide hole, the side wall of the first jacking rod is provided with a limiting member, an auxiliary jacking assembly comprises a plurality of second jacking rods and a plurality of elastic members, the plurality of second jacking rods are respectively arranged in the plurality of second guide holes, the plurality of elastic members are respectively arranged between the lower mould and the plurality of second jacking rods to drive the second jacking rods to move upwards, the bottom end of the second jacking rod is provided with an abutting portion, and the limiting member abuts against the top end of the abutting portion. The limiting member is provided with a plurality of sleeve holes and is sleeved on the outside of the plurality of second jacking rods through the plurality of sleeve holes. The plurality of second guide holes are located on the circumferential side of the first guide hole, and the plurality of second jacking rods are located on the circumferential side of the first jacking rod. The plurality of second guide holes are uniformly arranged along the circumference of the first guide hole, and the plurality of second jacking rods are uniformly arranged along the circumference of the first jacking rod. The top end of the hole wall of the first guide hole is provided with a first annular sink, the top end of the first jacking rod is formed with a sealing portion, the bottom end of the first annular sink is provided with a first sealing ring, when the top end of the sealing portion is flush with the top end of the first guide hole, the outer side wall of the sealing portion is fitted on the side wall of the first annular sink, and the bottom end of the sealing portion abuts against the first sealing ring. The top end of the second jacking rod is formed with a limiting portion, the second guide hole comprises a first hole section and a second hole section, the first hole section is located above the second hole section, the hole diameter of the first hole section is greater than the hole diameter of the second hole section, the elastic member is a spiral spring, the elastic member is sleeved on the outside of the second jacking rod, the top end of the elastic member abuts against the limiting portion, and the bottom end of the elastic member abuts against the bottom surface of the first hole section. The top end of the hole wall of the first hole section is provided with a second annular sink, when the top end of the limiting portion is flush with the top end of the second guide hole, the outer side wall of the limiting portion is fitted on the side wall of the second annular sink.

2. The easy-ejection die-casting machine according to claim 1, characterized in that, The bottom end of the second annular sink is provided with a second sealing ring, when the top end of the limiting portion is flush with the top end of the second guide hole, the bottom end of the limiting portion abuts against the second sealing ring.

3. The easy-ejection die casting machine according to claim 1, wherein ​ 4. The easy-ejection die casting machine according to claim 3, wherein ​ 5. The easy-ejection die casting machine of claim 1, wherein ​ 6. The easy-ejection die casting machine of claim 1, wherein ​ 7. The easy-ejection die casting machine according to claim 6, wherein ​ 8. The easy-ejection die casting machine according to claim 7, wherein ​ 9. The easy-ejection die casting machine of claim 6, wherein The second ejector rod is internally provided with a conveying channel, the limiting part is provided with a discharge hole connected with the conveying channel, and the bottom end of the second ejector rod is provided with a joint connected with the conveying channel, and the joint is used for connecting a release agent supply device.

10. The easy-ejection die casting machine according to claim 9, wherein The discharge hole is provided with a plurality of discharge holes arranged on the outer side wall of the limiting part and arranged along the circumference of the limiting part.

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