Energy-saving die casting machine

Abstract

The application relates to the technical field of die casting equipment, and particularly discloses an energy-saving die casting machine, which comprises a mold locking column frame and a barrel, the barrel is arranged on the mold locking column frame, a die cavity is coaxially arranged in the middle part of the barrel, a die assembly is arranged in the die cavity and can slide in the die cavity to press the metal liquid into a mold, a sprue is arranged on the barrel and connected with the die cavity, a bushing part is connected to the inside of the sprue, and annular parts are coaxially arranged on the two ends of the bushing part and outside the barrel, the energy-saving die casting machine can protect the sprue by the bushing part when the metal liquid is poured, the annular parts can block the metal liquid at the two ends of the sprue, the metal liquid can only slide in the area between the two annular parts, and when the die rod pushes the hammer head to press the metal liquid, the arc-shaped plate rotates around the barrel between the two annular parts to gather and push the sliding metal liquid to the sprue.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting equipment, and in particular to an energy-saving die-casting machine. Background Art

[0002] Energy-saving die-casting machines usually refer to servo energy-saving die-casting machines, which adopt a dual closed loop of system pressure and flow. The hydraulic system supplies oil according to the actual pressure and flow required, reducing the high energy consumption caused by high-pressure overflow of ordinary quantitative pump systems. During high-flow working stages such as energy storage, mold closing, and injection, the motor operates at the set speed. The motor speed is reduced during low-flow working stages such as pressure maintenance. During the cooling stage, the actual energy consumption of the oil pump motor is close to zero, thereby reducing energy consumption.

[0003] However, most of the existing energy-saving die-casting machines are unable to clean up the molten metal dripping on the outside of the barrel in time when in use. When operating the ladle to pour the molten metal into the barrel, the molten metal will inevitably drip and splash on the outside of the barrel and the edge of the gate. Due to the high temperature of the molten metal, the staff are often unable to clean the molten metal on the barrel in time, causing the molten metal to easily slide down the edge of the gate and the outside of the barrel and solidify into blocks, which not only causes waste and pollution, but also with the vibration of the equipment during the die-casting process, the metal blocks solidified on the edge of the gate are likely to fall off and fall into the barrel, which at least affects the quality of the workpiece, and at worst causes injection blockage, affecting the operation of the equipment. Summary of the Invention

[0004] The present invention provides an energy-saving die-casting machine, which aims to solve the problem in the related art that the molten metal dripping on the outside of the barrel cannot be cleaned in time, and the molten metal easily slides on the edge of the gate and the outside of the barrel and solidifies into blocks.

[0005] The energy-saving die-casting machine of the present invention comprises a clamping column frame and a barrel. The barrel is arranged on the clamping column frame. A shot cavity is coaxially opened in the middle of the barrel. A shot assembly is arranged inside the shot cavity and can slide in the shot cavity to hydraulically inject metal into the mold.

[0006] The barrel is provided with a gate connected to the injection cavity, the interior of the gate is clamped with a liner portion, and both ends of the liner portion are provided with an annular portion coaxially sleeved on the outside of the barrel;

[0007] A support platform is arranged between the two annular parts, and the support platform can slide along the circumferential surface of the annular part and rotate around the barrel when the injection assembly injects the molten metal. An arc-shaped plate adapted to the lining part is arranged at the bottom of the support platform, and the two bottom edges of the arc-shaped plate are arranged close to the outer wall of the barrel, and the arc-shaped plate is slidably arranged on the annular part, and can slide on the annular part and rotate around the barrel as the support platform moves, and when the arc-shaped plate moves to just above the lining part, it can descend relative to the support platform and be stuck in the lining part.

[0008] Preferably, the locking column frame includes a tail plate, a middle plate, a head plate and a guide column. The tail plate and the head plate are fixedly assembled on the base, the barrel is transversely fixed on the head plate, the guide column is transversely fixed between the tail plate and the head plate, and the middle plate is located between the tail plate and the head plate and is slidably assembled on the guide column.

[0009] Preferably, the outer wall of the barrel is coaxially provided with two annular grooves located at both ends of the gate, and the two annular parts are respectively arranged in the two annular grooves, and an arc groove and a vertical groove are provided on the opposite side of the two annular parts. The arc groove is arranged along the circumferential direction of the annular part, and there are two vertical grooves, both of which are located above the lining part, and the two vertical grooves are symmetrically distributed with respect to the center line of the lining part, and the top ends of the two vertical grooves are connected with the arc groove, and one of the vertical grooves is located at the top end of the arc groove, and two limit shafts are symmetrically provided inside the arc plate, and the two ends of the limit shaft respectively pass through the two arc end surfaces of the arc plate and are slidably assembled inside the arc groove.

[0010] Preferably, a pushing mechanism is provided between the support platform and the curved plate, including a double-headed screw, a sliding sleeve, an articulated frame and a slider. The double-headed screw is rotatably assembled in the support platform, and the threads at both ends of the double-headed screw rotate in opposite directions. The sliding sleeve has two threads respectively connected to the two ends of the double-headed screw. The articulated frame is X-shaped and consists of two support plates hinged to each other. The top ends of the two support plates are respectively rotatably connected to the two sliding sleeves. The slider has two pieces respectively rotatably assembled at the bottom ends of the two support plates. A sliding groove is opened on the top of the curved plate along the length direction of the support platform, and the two sliders are both slidably assembled in the sliding groove.

[0011] Preferably, the outside of the barrel is coaxially rotated with a gear ring, the end of the double-headed screw is fixedly mounted with a gear meshing with the gear ring, and a torsion spring is provided between the gear ring and the barrel to apply a torsional force to the gear ring.

[0012] Preferably, the injection assembly includes a hammer head and an injection rod. The hammer head is coaxially slidably assembled inside the injection cavity and forms a seal with the injection cavity. The injection rod is coaxially arranged inside the injection cavity and can push the hammer head to slide in the injection cavity.

[0013] Preferably, a sleeve is fixedly mounted on the gear ring, the sleeve is coaxially sleeved on the outside of the injection rod, a vertical shaft is provided between the sleeve and the injection rod, and the vertical shaft can drive the sleeve to rotate under the push of the injection rod.

[0014] Preferably, the inner wall of the sleeve is provided with a spiral groove, the top end of the vertical shaft is arranged inside the spiral groove, the side wall of the injection rod is provided with a limiting groove along its axial direction, and the bottom end of the vertical shaft is arranged inside the limiting groove.

[0015] When the present invention is in use, the lining portion can protect the gate during molten metal pouring to prevent the gate from direct contact with high-temperature molten metal and wear; the annular portion blocks the molten metal at both ends of the gate, limiting the molten metal from sliding down only in the area between the annular portions, so that when the injection rod pushes the hammer head to perform metal liquid injection, the arc plate rotates around the barrel between the two annular portions, gathering the sliding molten metal toward the gate, avoiding waste of molten metal and pollution to the workshop; and the arc plate covers from above the lining portion during movement to prevent the molten metal from adhering to and solidifying the inner side of the lining portion, ensuring that no solidified metal blocks appear near the lining portion, thereby preventing metal blocks from falling into the injection cavity during injection to affect the die-casting quality of the workpiece and cause injection blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view of the present invention.

[0017] Figure 2 This invention Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0018] Figure 3 It is a three-dimensional diagram of the barrel and the support of the present invention.

[0019] Figure 4 It is a front cross-sectional view of the barrel of the present invention.

[0020] Figure 5 It is a three-dimensional diagram of the support of the present invention.

[0021] Figure 6 It is a three-dimensional view of the barrel of the present invention.

[0022] Figure 7 It is a three-dimensional diagram of the curved plate of the present invention.

[0023] Figure 8 This invention Figure 7 Front cross-sectional view of .

[0024] Reference numerals:

[0025] 10. Base; 20. Clamping column frame; 21. Tail plate; 22. Middle plate; 23. Head plate; 24. Guide column; 30. Barrel; 31. Injection cavity; 32. Gate; 33. Annular groove; 40. Support; 41. Annular part; 411. Arc groove; 412. Vertical groove; 42. Lining part; 50. Injection assembly; 51. Hammer head; 52. Injection rod; 521. Limiting groove; 60. Cleaning part; 61. Support platform; 62. Arc plate; 621. Slide; 63. Limiting shaft; 70. Pushing mechanism; 71. Double-headed screw; 72. Sliding sleeve; 73. Articulated frame; 74. Slider; 80. Drive assembly; 81. Ring gear; 811. Connecting rod; 82. Gear; 90. Transmission assembly; 91. Sleeve; 911. Spiral groove; 92. Vertical axis. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] like Figures 1 to 8 As shown, the energy-saving die-casting machine of the present invention includes a base 10, a locking column frame 20, a barrel 30, a support 40, an injection assembly 50, a cleaning piece 60, a pushing mechanism 70, a driving assembly 80, and a transmission assembly 90. The locking column frame 20 is arranged on the base 10 and is used for installing the movable template and the fixed template and opening and closing the mold. The barrel 30 is arranged on the locking column frame 20 and is used for pouring molten metal. The support 40 is located outside the barrel 30 and is used for installing the cleaning piece 60. The cleaning piece 60 is provided with a pushing mechanism 70 and a driving assembly 80. The injection assembly 50 is located in the barrel 30 and is used for injecting molten metal. The transmission assembly 90 is arranged between the injection assembly 50 and the driving assembly 80, and can cooperate with the driving assembly 80 and the pushing mechanism 70 to drive the cleaning piece 60 to operate during the metal hydraulic injection, so as to clean the outside of the barrel 30 and avoid the residual molten metal outside the barrel 30.

[0028] refer to Figure 1 The locking column frame 20 includes a tail plate 21, a middle plate 22, a head plate 23 and a guide column 24. The tail plate 21 and the head plate 23 are fixedly assembled on the base 10. The head plate 23 is used for installing the fixed template. The guide column 24 is laterally fixed between the tail plate 21 and the head plate 23. The middle plate 22 is located between the tail plate 21 and the head plate 23 and is slidably assembled on the guide column 24 for installing the movable template. The middle plate 22 can move closer to or away from the head plate 23 during sliding to close and open the movable template and the fixed template.

[0029] refer to Figure 1 、 Figure 2 、 Figure 4 as well as Figure 6The barrel 30 is laterally fixed on the head plate 23. A circular injection cavity 31 is coaxially opened inside the barrel 30. A gate 32 connected to the injection cavity 31 is opened on the barrel 30 for pouring molten metal into the injection cavity 31. Two annular grooves 33 are coaxially opened on the outer wall of the barrel 30 at both ends of the gate 32 to facilitate the installation of the support 40.

[0030] refer to Figure 2 、 Figure 3 as well as Figure 5 The support 40 includes an annular portion 41 and a lining portion 42. The annular portion 41 has two interiors with two annular grooves 33 respectively. The lining portion 42 is a frame-type structure, which is fixedly arranged between the two annular portions 41 and clamped in the interior of the gate 32. The bottom of the lining portion 42 extends into the interior of the injection cavity 31, and the bottom wall of the lining portion 42 is arc-shaped, which fits the curvature of the side wall of the injection cavity 31, so that the annular portion 41 can limit the sliding molten metal during the pouring of the molten metal, and the dripping molten metal can only slide in the area between the two annular portions 41. At the same time, the lining portion 42 protects the side wall of the gate 32 to prevent the high-temperature molten metal from directly contacting the side wall of the gate 32, thereby protecting the side wall of the gate 32 from wear and damage, thereby extending the service life of the barrel 30.

[0031] An arcuate groove 411 and a vertical groove 412 are provided on opposite sides of the two annular portions 41. The arcuate groove 411 is arranged along the circumferential direction of the annular portion 41. There are two vertical grooves 412, both located above the lining portion 42, and the two vertical grooves 412 are symmetrically distributed relative to the center line of the lining portion 42. The top ends of the two vertical grooves 412 are connected to the arcuate groove 411, and one of the vertical grooves 412 is located at the top end of the arcuate groove 411. The arcuate groove 411 and the vertical groove 412 can guide the moving cleaning part 60. The annular portion 41 is composed of two half rings, and the two half rings are connected by bolts to facilitate the disassembly, assembly and replacement of the annular portion 41 and the lining portion 42, eliminating the trouble of directly replacing the barrel 30 and reducing the cost of use.

[0032] refer to Figure 4 The injection assembly 50 includes a hammer head 51 and an injection rod 52. The hammer head 51 is coaxially slidably assembled inside the injection cavity 31 and forms a seal with the injection cavity 31. The injection rod 52 is coaxially arranged inside the injection cavity 31 and can push the hammer head 51 to slide in the injection cavity 31, and hydraulically inject the metal into the mold on the head plate 23 to complete the casting.

[0033] refer to Figure 2 、 Figure 3 、 Figure 7 as well as Figure 8The cleaning piece 60 comprises a support table 61, an arc-shaped plate 62 and a limiting shaft 63. The support table 61 is arranged between the two annular portions 41 and can slide along the circumferential surface of the annular portion 41. The arc-shaped plate 62 is arranged at the bottom of the support table 61 and can be lifted and lowered relative to the support table 61. The arc-shaped plate 62 is arranged in close contact with the side walls of the two annular portions 41 at the two arc-shaped end surfaces thereof and is arranged in close contact with the outer wall of the material cylinder 30 at the two bottom edges thereof. The limiting shaft 63 is symmetrically arranged inside the arc-shaped plate 62 and is slidably arranged in the arc-shaped groove 411 at the two ends thereof.

[0034] When the support table 61 slides along the annular portion 41, the limiting shaft 63 slides in the arc-shaped groove 411 to guide the arc-shaped plate 62, so that the arc-shaped plate 62 rotates around the material cylinder 30 and pushes the molten metal falling on the outer wall of the material cylinder 30 towards the bushing portion 42, so that the molten metal enters the injection cavity 31 from the sprue 32. The material falling outside is avoided from being wasted and polluting the environment. When one of the limiting shafts 63 moves to the top end of the arc-shaped groove 411 and cannot continue to move forward, the limiting shaft 63 can be moved downwards into the vertical groove 412, thereby driving the arc-shaped plate 62 to descend and be clamped in the bushing portion 42, so as to completely seal the sprue 32. In addition, the molten metal adhering to the inner wall of the bushing portion 42 is pushed into the injection cavity 31 during the descent of the arc-shaped plate 62, so as to avoid the situation that the molten metal stays in the inner wall of the bushing portion 42 and then solidifies, thereby ensuring that the solidified metal block does not fall into the injection cavity 31 and affect the die casting process of the equipment.

[0035] The bottom of the arc-shaped plate 62 is adapted to the bushing portion 42, so that the bottom of the arc-shaped plate 62 is in close contact with the bottom of the bushing portion 42 after the arc-shaped plate 62 completely enters the bushing portion 42. In this way, the bottom surface of the bushing portion 42, the bottom surface of the arc-shaped plate 62 and the inner wall surface of the injection cavity 31 are located on the same circumferential surface, so that the hammer head 51 can scrape and clean the molten metal on the bottom surfaces of the bushing portion 42 and the arc-shaped plate 62 when passing through. The sliding groove 621 is arranged on the top of the arc-shaped plate 62 along the length direction of the support table 61. The arc length of the upper arc surface of the arc-shaped plate 62 is greater than that of the lower arc surface, so that the rectangular cross section formed between the upper and lower surfaces of the arc-shaped plate 62 is an inclined surface. In this way, the molten metal can be gathered between the material cylinder 30 and the rectangular cross section of the arc-shaped plate 62 during the movement of the arc-shaped plate 62, so as to avoid flowing outward and facilitate the arc-shaped plate 62 to send the falling molten metal into the sprue 32.

[0036] Reference Figure 8The pushing mechanism 70 comprises a double-end screw 71, sliding sleeves 72, a hinged frame 73 and sliding blocks 74. The double-end screw 71 is rotatably arranged in the support table 61, the threads at the two ends of the double-end screw 71 are opposite in rotation direction, the sliding sleeves 72 are threadedly connected to the two ends of the double-end screw 71 respectively, the hinged frame 73 is X-shaped and comprises two hinged support plates, the top ends of the two support plates are rotatably connected to the two sliding sleeves 72 respectively, and the sliding blocks 74 are rotatably arranged at the bottom ends of the two support plates respectively and are slidably arranged in the sliding groove 621, so that the two sliding sleeves 72 are pushed to move closer to or away from each other by the double-end screw 71, the two support plates of the hinged frame 73 are rotated to drive the sliding blocks 74 to slide in the sliding groove 621, and then the arc-shaped plate 62 is lowered or lifted.

[0037] With reference to Figure 2 and Figure 3 The driving assembly 80 comprises a gear ring 81, a gear 82 and a torsional spring. The gear ring 81 is coaxially and rotatably arranged outside the barrel 30, the gear 82 is fixedly installed at the end of the double-end screw 71 and is engaged with the gear ring 81, and the torsional spring is arranged between the gear ring 81 and the barrel 30 to apply a torsional force to the gear ring 81, so that the gear ring 81 rotates outside the barrel 30. Since the arc-shaped plate 62 is limited by the outer wall of the barrel 30 and cannot be lowered, the double-end screw 71 and the gear 82 cannot rotate. When the gear ring 81 rotates, the gear 82 is pushed to rotate with the support table 61 around the barrel 30, so that the arc-shaped plate 62 slides along the arc-shaped groove 411 and the molten metal on the outer wall of the barrel 30 is cleaned by the arc-shaped plate 62.

[0038] When the arc-shaped plate 62 moves to the position directly above the lip portion 42, the limiting shaft 63 cannot move further because it has reached the top end of the arc-shaped groove 411, and the bottom of the arc-shaped plate 62 is no longer blocked by the barrel 30, so that the gear ring 81 can push the gear 82 to rotate when it rotates. The two sliding sleeves 72 are pushed to move closer to each other by the double-end screw 71, the arc-shaped plate 62 is lowered by the hinged frame 73, the limiting shaft 63 enters the vertical groove 412, and the arc-shaped plate 62 is clamped into the lip portion 42, so that the inner wall of the lip portion 42 is cleaned.

[0039] When the gear ring 81 reversely rotates, it can first drive the gear 82 and the double-end screw 71 to rotate reversely, so that the arc-shaped plate 62 is lifted to be separated from the lip portion 42, the limiting shaft 63 enters the arc-shaped groove 411 from the vertical groove 412 and cannot be lifted further because it is limited by the arc-shaped groove 411, and then the double-end screw 71 cannot continue to rotate, and finally the gear ring 81 pushes the gear 82 and the support table 61 to rotate reversely around the barrel 30 to reset.

[0040] With reference to Figure 2 , Figure 3 , Figure 4 and Figure 6The transmission assembly 90 includes a sleeve 91 and a vertical shaft 92. The sleeve 91 is coaxially sleeved on the outside of the injection rod 52 and fixed to the ring gear 81. The vertical shaft 92 is set between the sleeve 91 and the injection rod 52. When the injection rod 52 slides out of the injection cavity 31, the vertical shaft 92 can push the sleeve 91 to rotate with the ring gear 81 to compress the torsion spring. When the injection rod 52 enters the injection cavity 31, the restriction on the sleeve 91 can be released, so that the ring gear 81 and the sleeve 91 can rotate under the action of the torsional force of the torsion spring.

[0041] The inner wall of the sleeve 91 is provided with a spiral groove 911, the top end of the vertical shaft 92 is arranged inside the spiral groove 911, the side wall of the injection rod 52 is provided with a limiting groove 521 along its axial direction, and the bottom end of the vertical shaft 92 is arranged inside the limiting groove 521. When the injection rod 52 pushes the hammer head 51 to move for metal hydraulic injection, the injection rod 52 gradually penetrates into the barrel 30, and the end of the limiting groove 521 gradually moves away from the vertical shaft 92, releasing the blocking limit of the vertical shaft 92. The sleeve 91 and the gear ring 81 can rotate under the action of the torsion force of the torsion spring to operate the cleaning member 60, and at the same time drive the sleeve 91 to rotate through the spiral groove 911 to push the vertical shaft 92 along the limiting groove 521 toward the barrel 30. The sleeve 91 is rotated by the end of the limit groove 521, and the ring gear 81 is disengaged from the lining portion 42 and reset. A connecting rod 811 is fixedly installed on the side wall of the ring gear 81, and the end of the connecting rod 811 away from the ring gear 81 is fixed on the sleeve 91, so that the ring gear 81 and the sleeve 91 are fixed to each other, so as to facilitate the synchronous rotation of the ring gear 81 and the sleeve 91.

[0042] Working principle: The middle plate 22 slides along the guide pillars 24 and presses against the side of the head plate 23, closing the movable and fixed mold plates. Then, the molten metal is poured from the pouring gate 32 into the injection cavity 31 of the barrel 30 by the ladle. The injection rod 52 pushes the hammer head 51 to move deep into the barrel 30. The vertical shaft 92 is no longer blocked by the end of the limit groove 521. The ring gear 81 drives the sleeve 91 to rotate under the torsional force of the torsion spring, and the spiral groove 911 pushes the vertical shaft 92 along the limit groove 521 toward the barrel 30.

[0043] As the ring gear 81 rotates, the curved plate 62 is restricted by the outer wall of the barrel 30 and cannot descend, so the double-headed screw 71 and the gear 82 cannot rotate. Then, the ring gear 81 pushes the gear 82 and the support platform 61 to rotate around the barrel 30. During the movement, the curved plate 62 pushes the molten metal sliding along the outer wall of the barrel 30 toward the lining portion 42, allowing the molten metal to enter the injection cavity 31 through the gate 32.

[0044] As the curved plate 62 moves to the top of the lining portion 42, the limit shaft 63 is restricted by the end of the arc groove 411 and cannot move forward. The gear ring 81 starts to drive the gear 82 to rotate, so that the double-headed screw 71 pushes the two sliding sleeves 72 closer to each other, and the hinge frame 73 pushes the curved plate 62 down, so that the limit shaft 63 enters the vertical groove 412 from the arc groove 411. The curved plate 62 descends and pushes the molten metal adhering to the inner wall of the lining portion 42 into the interior of the injection cavity 31. Finally, the curved plate 62 is stuck in the interior of the lining portion 42 to completely close the gate 32. The bottom surfaces of the curved plate 62 and the lining portion 42 are located on the same circumferential surface as the inner wall of the injection cavity 31. When the hammer head 51 passes by, the adhering molten metal is scraped off and the metal liquid is hydraulically injected into the mold for die-casting of the workpiece.

[0045] After the injection is completed, the injection rod 52 moves back and resets with the hammer head 51, and the end of the limit groove 521 contacts the vertical shaft 92 again and pushes it to move back. During the movement, the vertical shaft 92 drives the sleeve 91 to rotate in the opposite direction through the spiral groove 911, driving the ring gear 81 to rotate in the opposite direction and compress the torsion spring. The ring gear 81 drives the gear 82 and the double-headed screw 71 to reverse, so that the arc plate 62 lifts the limit shaft 63 and re-enters the arc groove 411. Under the restriction of the arc groove 411, the limit shaft 63 cannot continue to rise, and then restricts the rotation of the double-headed screw 71 and the gear 82, so that the ring gear 81 pushes the gear 82 and the support platform 61 to rotate and reset around the barrel 30 during rotation, so that the gate 32 is opened again to facilitate the next pouring of molten metal.

[0046] In the present invention, the lining portion 42 can protect the gate 32 during molten metal pouring to prevent the gate 32 from directly contacting the high-temperature molten metal and causing wear. The annular portion 41 blocks the molten metal at both ends of the gate 32, limiting the molten metal from sliding down only in the area between the annular portions 41. When the injection rod 52 pushes the hammer head 51 to perform molten metal injection, the arc plate 62 rotates around the barrel 30 between the two annular portions 41 to gather the sliding molten metal and push it toward the gate 32, thereby avoiding waste of molten metal and pollution to the workshop. In addition, the arc plate 62 covers the lining portion 42 from above during movement to prevent the molten metal from adhering to and solidifying on the inner side of the lining portion 42, thereby ensuring that no solidified metal blocks appear near the lining portion 42, thereby preventing metal blocks from falling into the injection cavity 31 during injection, affecting the die-casting quality of the workpiece, and causing injection blockage.

[0047] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An energy-saving die-casting machine, comprising a clamping column frame (20) and a barrel (30), wherein the barrel (30) is arranged on the clamping column frame (20), and is characterized in that: A shot cavity (31) is coaxially formed in the middle of the barrel (30), and a shot assembly (50) is provided inside the shot cavity (31) and is capable of sliding in the shot cavity (31) to hydraulically inject the metal into the mold; The injection assembly (50) includes a hammer head (51) and an injection rod (52); The barrel (30) is provided with a gate (32) connected to the injection cavity (31), the gate (32) is internally clamped with a lining portion (42), and both ends of the lining portion (42) are provided with an annular portion (41) coaxially sleeved on the outside of the barrel (30); A support platform (61) is provided between the two annular portions (41), and the support platform (61) can slide along the circumferential surface of the annular portion (41) and rotate around the barrel (30) when the injection assembly (50) injects the molten metal. An arc-shaped plate (62) adapted to the lining portion (42) is provided at the bottom of the support platform (61). Both bottom edges of the arc-shaped plate (62) are arranged close to the outer wall of the barrel (30), and the arc-shaped plate (62) is slidably provided on the annular portion (41), and can slide on the annular portion (41) and rotate around the barrel (30) as the support platform (61) moves. When the arc-shaped plate (62) moves to the top of the lining portion (42), it can descend relative to the support platform (61) and be inserted into the lining portion (42). The outer wall of the barrel (30) is coaxially provided with two annular grooves (33) located at both ends of the gate (32), and the two annular portions (41) are respectively arranged in the two annular grooves (33). The two annular portions (41) are respectively provided with an arc groove (411) and a vertical groove (412) on opposite sides. The arc groove (411) is arranged along the circumferential direction of the annular portion (41), and there are two vertical grooves (412) both located above the lining portion (42). The two vertical grooves (412) are symmetrically distributed relative to the center line of the lining portion (42). The top ends of the two vertical grooves (412) are both connected to the arc groove (411), and one of the vertical grooves (412) is located at the top end of the arc groove (411). Two limiting shafts (63) are symmetrically provided inside the arc plate (62), and the two ends of the limiting shaft (63) respectively pass through the two arc end surfaces of the arc plate (62) and are slidably assembled inside the arc groove (411); A pushing mechanism (70) is provided between the support platform (61) and the arc-shaped plate (62), comprising a double-headed screw (71), a sliding sleeve (72), an articulated frame (73) and a slider (74). The double-headed screw (71) is rotatably assembled in the support platform (61), and the threads at both ends of the double-headed screw (71) rotate in opposite directions. The sliding sleeve (72) has two threads connected to the two ends of the double-headed screw (71), and the articulated frame (73) is X-shaped and consists of two mutually hinged support plates. The top ends of the two support plates are rotatably connected to the two sliding sleeves (72), and the slider (74) has two bottom ends rotatably assembled to the two support plates. A sliding groove (621) is provided on the top of the arc-shaped plate (62) along the length direction of the support platform (61), and the two sliders (74) are both slidably assembled in the sliding groove (621). The outer portion of the barrel (30) is coaxially rotated with a ring gear (81), the end of the double-headed screw (71) is fixedly mounted with a gear (82) meshing with the ring gear (81), and a torsion spring is provided between the ring gear (81) and the barrel (30) to apply a torsional force to the ring gear (81); A sleeve (91) is fixedly mounted on the gear ring (81), and the sleeve (91) is coaxially sleeved on the outside of the injection rod (52). A vertical shaft (92) is provided between the sleeve (91) and the injection rod (52), and the vertical shaft (92) can drive the sleeve (91) to rotate under the push of the injection rod (52).

2. The energy-saving die-casting machine according to claim 1, characterized in that: The clamping column frame (20) includes a tail plate (21), a middle plate (22), a head plate (23) and a guide column (24). The tail plate (21) and the head plate (23) are fixedly assembled on the base (10). The barrel (30) is transversely fixed on the head plate (23). The guide column (24) is transversely fixed between the tail plate (21) and the head plate (23). The middle plate (22) is located between the tail plate (21) and the head plate (23) and is slidably assembled on the guide column (24).

3. The energy-saving die-casting machine according to claim 1, characterized in that: The hammer head (51) is coaxially slidably assembled inside the injection cavity (31) and forms a seal with the injection cavity (31). The injection rod (52) is coaxially arranged inside the injection cavity (31) and can push the hammer head (51) to slide inside the injection cavity (31).

4. The energy-saving die-casting machine according to claim 3, characterized in that: The inner wall of the sleeve (91) is provided with a spiral groove (911), the top end of the vertical shaft (92) is arranged inside the spiral groove (911), the side wall of the injection rod (52) is provided with a limiting groove (521) along its axial direction, and the bottom end of the vertical shaft (92) is arranged inside the limiting groove (521).

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