Casting device for manufacturing automobile body metal part by using new material

Abstract

The invention discloses a casting device for manufacturing an automobile body metal part through a new material, and belongs to the technical field of automobile part manufacturing, the casting device comprises main body equipment, a fixed mold is fixedly mounted on the bottom surface in the main body equipment, and a movable mold capable of moving up and down is connected to the position, corresponding to the fixed mold, of the upper portion in the main body equipment through a hydraulic telescopic rod; and an auxiliary groove is formed in the bottom of the fixed mold. When the device is used, the collision ball is in collision contact with the L-shaped shifting piece, so that the L-shaped shifting piece generates vibration, the vibration promotes liquid molecules and bubbles in molten metal in the fixed mold to generate high-frequency reciprocating motion, the bubbles are collided and polymerized due to movement speed difference, and after small bubbles are polymerized into large bubbles, the large bubbles float and are discharged due to increase of buoyancy. The problems that in the casting process of an existing automobile body metal part casting device, due to the fact that an effective auxiliary exhaust structure is lacked, bubbles in molten metal cannot be fully exhausted, formed workpieces are prone to hollowing, bulging and other defects, and the product quality and the qualified rate are affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile part manufacturing, and specifically to a casting device for manufacturing automobile body metal parts using new materials. Background Art

[0002] In the automobile manufacturing industry, the casting quality of automobile body metal parts directly affects the safety, durability and appearance quality of automobiles. A casting device for manufacturing automobile body metal parts using new materials is a key equipment to ensure high-quality production. During the casting process, ensuring that the gas in the molten metal is fully discharged and avoiding defects such as air pockets and bulges in the formed workpiece are important links to improve product quality. At present, the existing casting devices for automobile body metal parts have deficiencies in discharging the gas in the molten metal. Most traditional casting devices lack effective exhaust auxiliary structures and rely only on the natural settlement or simple shaking of the molten metal itself to discharge gas. This is because their die structures are relatively simple and no special linkage mechanism for gas discharge is provided. After the molten metal is poured into the die, due to the lack of vibration driven by external force, the bubbles in the molten metal cannot quickly aggregate and discharge. Small bubbles are difficult to collide with each other to form large bubbles, resulting in a large number of small bubbles remaining inside the molten metal, and finally forming problems such as air pockets and bulges after the workpiece is formed. These defects not only affect the appearance quality of automobile body metal parts, but also reduce the structural strength and stability of the workpiece, seriously affecting the overall performance and service life of the automobile. At the same time, workpieces with such quality problems need to be reworked or scrapped, increasing production costs and reducing production efficiency. Therefore, the present invention provides a casting device for manufacturing automobile body metal parts using new materials to solve the above-mentioned problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a casting device for manufacturing automobile body metal parts using new materials to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A casting device for manufacturing automobile body metal parts using new materials, including a main device. A fixed die is fixedly installed on the inner bottom surface of the main device. A movable die that can move up and down is connected above the main device corresponding to the position of the fixed die through a hydraulic telescopic rod. An auxiliary groove is opened at the bottom of the fixed die. A connecting column is fixedly connected to the center point of the inner top surface of the auxiliary groove. An auxiliary vibration mechanism for assisting in discharging the gas in the molten metal is arranged on the connecting column. Four embedding grooves are symmetrically opened inside the fixed die. Sealing blocks are movably clamped inside the four embedding grooves. A top-out mechanism for assisting in ejecting the formed die is arranged inside the auxiliary groove. Two extrusion blocks that can drive the operation of the auxiliary vibration mechanism through extrusion are symmetrically fixedly connected to the outer wall surface of the movable die.

[0005] As a further solution of the present invention, the auxiliary vibration mechanism includes a first connecting ring, an arc-shaped embedding block, a connecting rod, an arc-shaped plate, and a collision ball. A spiral guiding groove is formed on the connecting column. The connecting column is movably sleeved with a first connecting ring, and an arc-shaped embedding block is fixedly connected to the inner wall surface of the first connecting ring. The arc-shaped embedding block is movably clamped inside the spiral guiding groove. The outer wall surface of the first connecting ring is fixedly connected with a connecting rod. One end of the connecting rod away from the first connecting ring is fixedly connected with an arc-shaped plate. A collision ball is fixedly connected to the side wall surface of the arc-shaped plate away from the connecting rod.

[0006] As a further solution of the present invention, the auxiliary vibration mechanism further includes a second connecting ring, an L-shaped linkage rod, and an L-shaped dial. The connecting column is movably sleeved with a second connecting ring below the first connecting ring. The upper wall surface of the second connecting ring is movably connected to the lower wall surface of the first connecting ring through a bearing. Two L-shaped linkage rods are symmetrically and fixedly connected to the outer wall surface of the second connecting ring. Two first moving holes are formed on the outer wall of the fixed mold corresponding to the positions of the two L-shaped linkage rods. The L-shaped linkage rods penetrate through the corresponding first moving holes and extend to the outside of the fixed mold. The vertical ends of the two L-shaped linkage rods are vertically corresponding to two extrusion blocks on the moving mold. Six L-shaped dials are connected in a circular array on the inner top surface of the auxiliary groove with the center point of the inner top surface of the auxiliary groove as the center of the circle.

[0007] As a further solution of the present invention, the six L-shaped dials are all L-shaped blocks. The cross-sections of the ends of the horizontal parts of the six L-shaped dials close to the connecting column are all conical. The distances between the ends of the six L-shaped dials close to each other and the connecting column are the same. The distances between the connection points of the vertical parts of the six L-shaped dials and the inner top surface of the auxiliary groove and the connecting column are all different. The horizontal parts of the six L-shaped dials are arranged in a staggered height. The distance between the ends of the six L-shaped dials close to each other and the side wall surface of the arc-shaped plate away from the connecting column is less than the diameter of the collision ball.

[0008] As a further solution of the present invention, clamping blocks are fixedly connected to the upper ends of the vertical parts of the two L-shaped linkage rods. Each clamping block is composed of a rhombic block and a rectangular block. The upper wall surface of the rhombic block on the clamping block is fixedly connected to the upper wall surface of the rectangular block on the clamping block. The clamping block is an elastic block. A sleeve hole is formed on the extrusion block corresponding to the clamping block. The inner length of the sleeve hole is less than the maximum diameter of the rhombic block on the clamping block. The inner length of the sleeve hole is greater than the length of the rectangular block on the clamping block.

[0009] As a further solution of the present invention, the ejection mechanism includes a U-shaped lifting block, a top column and an air pump. Two second moving holes are symmetrically formed in the inner left and right side walls of the auxiliary groove. U-shaped lifting blocks capable of moving up and down are movably clamped in the two second moving holes. Both ends of the U-shaped lifting block extend into the auxiliary groove and the outside of the fixed mold respectively. The upper wall surface of the end of the U-shaped lifting block located inside the auxiliary groove is provided with two rotatable top columns through bearings. The positions of the two top columns correspond to the upper and lower positions of the two sealing blocks on the same side. A communication hole is formed in the inner bottom surface of the embedding groove. The upper end of the top column extends into the corresponding communication hole. The upper end of the top column is fixedly connected to the lower wall surface of the corresponding sealing block. Air pumps are fixedly installed on the outside of the main equipment corresponding to the positions of the two U-shaped lifting blocks through mounting plates. The output end of the air pump is fixedly connected to the lower wall surface of the corresponding U-shaped lifting block.

[0010] As a further solution of the present invention, an auxiliary sliding groove is formed on the outer wall surface of the top column. The auxiliary sliding groove is a spiral groove. An auxiliary sliding block is fixedly installed on the inner wall surface of the communication hole corresponding to the auxiliary sliding groove. The auxiliary sliding block is movably clamped in the corresponding auxiliary sliding groove.

[0011] As a further solution of the present invention, two T-shaped sliding grooves are symmetrically formed in the inner wall surface of the second moving hole. Two T-shaped sliding blocks are fixedly connected to the outer wall surface of the U-shaped lifting block corresponding to the two T-shaped sliding grooves. The T-shaped sliding blocks are movably clamped in the corresponding T-shaped sliding grooves.

[0012] As a further solution of the present invention, a sealing ring for improving the sealing performance after the fixed mold and the moving mold are closed is fixedly connected to the upper wall surface of the fixed mold.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the moving mold moves downward during the use of the present invention, the extrusion block extrudes the L-shaped linkage rod, driving the second connecting ring to drag the first connecting ring to move downward and rotate on the connecting column, and then the connecting rod drives the arc plate and the collision ball to make a circular motion with the connecting column as the center. During the movement, the collision ball collides with the L-shaped dial, causing the L-shaped dial to vibrate. This vibration prompts the liquid molecules and bubbles in the molten metal inside the fixed mold to perform high-frequency reciprocating motions, causing the bubbles to collide and aggregate due to the difference in movement speed. After the small bubbles are aggregated into large bubbles, they float and are discharged due to the increase in buoyancy. This solves the problem that in the casting process of the existing automobile body metal part casting device, due to the lack of an effective auxiliary exhaust structure, the bubbles in the molten metal cannot be fully discharged, resulting in defects such as air pockets and bulges in the formed workpiece, which affect the product quality and qualification rate. 2. The present invention is equipped with an ejection mechanism composed of an air pump, a U-shaped lifting block, a top column, a sealing block, an auxiliary slider, an auxiliary chute, etc. At the same time, by using the special size design of the sleeve hole and the clamping block, when the moving mold and the fixed mold are separated, the extrusion block can drive the L-shaped linkage rod to move upward and reset. During this process, the collision ball collides with the L-shaped dial again to achieve auxiliary demolding; 3. When the ejection mechanism of the present invention works, the air pump drives the U-shaped lifting block to move upward in the second moving hole. The U-shaped lifting block drives the top column to push the sealing block upward, and the top column rotates automatically during the upward movement due to the cooperation of the auxiliary slider and the auxiliary chute, driving the sealing block to rotate, so that the sealing block is quickly separated from the formed workpiece inside the fixed mold. This solves the problems of the complex demolding process, low efficiency of the existing casting device, and the workpiece is prone to deformation and damage due to uneven force during demolding, and it is difficult to ensure the integrity of the mold release. It effectively improves the production efficiency and reduces the loss of the workpiece; 4. When the present invention is in use, six L-shaped dials are distributed in a circular array on the inner top surface of the auxiliary groove. The cross-section of the horizontal end near the connecting column is conical, and the distance between the connection point of the vertical end and the inner top surface of the auxiliary groove and the connecting column varies, and the heights of the horizontal ends are staggered with each other. During the movement process, the collision ball collides with the L-shaped dial. The conical structure of the horizontal end of the L-shaped dial can produce a stronger vibration effect during the collision, and due to its special distribution setting, it expands the contact range with the fixed mold and can generate effective vibration for the molten metal at different positions inside the fixed mold. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of a casting device for manufacturing automotive body metal parts using new materials.

[0015] Figure 2 It is a schematic diagram of the structure at the fixed mold and the moving mold of a casting device for manufacturing automotive body metal parts using new materials.

[0016] Figure 3 It is a schematic diagram of the semi-sectional structure at the fixed mold of a casting device for manufacturing automotive body metal parts using new materials.

[0017] Figure 4 It is a schematic diagram of the partial structure at the connecting column of a casting device for manufacturing automotive body metal parts using new materials.

[0018] Figure 5 It is a schematic diagram of the structure at the U-shaped lifting block of a casting device for manufacturing automotive body metal parts using new materials.

[0019] Figure 6 It is a schematic diagram of the top view structure at the fixed mold of a casting device for manufacturing automotive body metal parts using new materials.

[0020] Figure 7 In a casting device for manufacturing automotive body metal parts using new materials Figure 4 Enlarged view of part A in the figure

[0021] In the figure: 1, main equipment; 2, fixed mold; 3, movable mold; 4, auxiliary groove; 5, connecting column; 6, spiral guide groove; 7, first connecting ring; 8, arc-shaped embedding block; 9, connecting rod; 10, arc-shaped plate; 11, collision ball; 12, second connecting ring; 13, L-shaped linkage rod; 14, clamping block; 15, first moving hole; 16, extrusion block; 17, sleeve hole; 18, L-shaped dial; 19, limiting piece; 20, embedding groove; 21, sealing block; 22, communication hole; 23, auxiliary slider; 24, second moving hole; 25, T-shaped sliding groove; 26, U-shaped lifting block; 27, T-shaped slider; 28, ejector pin; 29, auxiliary sliding groove; 30, mounting plate; 31, air pump; 32, sealing ring Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0023] Please refer to Figures 1 to 7 , in the embodiment of the present invention, a casting device for manufacturing automotive body metal parts using new materials includes a main equipment 1. A fixed mold 2 is fixedly installed on the inner bottom surface of the main equipment 1. A movable mold 3 that can move up and down is connected by a hydraulic telescopic rod at a position corresponding to the fixed mold 2 above the inside of the main equipment 1. When in use, first inject the metal liquid required for casting into the inside of the fixed mold 2, and then start the hydraulic telescopic rod on the movable mold 3 to drive the movable mold 3 to move downward until the movable mold 3 is closed with the fixed mold 2. When the casting is completed, the movable mold 3 is reset by the hydraulic telescopic rod, and the staff can demold the workpiece inside the fixed mold 2. An auxiliary groove 4 is opened at the bottom of the fixed mold 2. A connecting column 5 is fixedly connected to the center point of the inner top surface of the auxiliary groove 4. A limiting piece 19 is fixedly connected to the lower wall surface of the connecting column 5. An auxiliary vibration mechanism for assisting in removing the gas in the metal liquid is arranged on the connecting column 5. Four embedding grooves 20 are symmetrically opened inside the fixed mold 2. Sealing blocks 21 are movably clamped inside the four embedding grooves 20. The outer wall surface of the sealing block 21 is closely attached to the inner wall surface of the embedding groove 20, thus ensuring the integrity of the workpiece when the device completes casting. A jacking mechanism for assisting in ejecting the formed mold is arranged inside the auxiliary groove 4. Two extrusion blocks 16 that can drive the operation of the auxiliary vibration mechanism through extrusion are symmetrically fixedly connected to the outer wall surface of the movable mold 3

[0024] The auxiliary vibration mechanism includes a first connecting ring 7, an arc-shaped embedding block 8, a connecting rod 9, an arc-shaped plate 10 and a collision ball 11. A spiral guiding groove 6 is formed on the connecting column 5. A first connecting ring 7 is movably sleeved on the connecting column 5, and an arc-shaped embedding block 8 is fixedly connected to the inner wall surface of the first connecting ring 7. The arc-shaped embedding block 8 is an arc-shaped block, and the shape and size of the arc-shaped embedding block 8 are adapted to the shape and size inside the spiral guiding groove 6. The arc-shaped embedding block 8 is movably clamped inside the spiral guiding groove 6. Since the arc-shaped embedding block 8 is located inside the spiral guiding groove 6, when the first connecting ring 7 moves on the connecting column 5, the first connecting ring 7 will rotate under the influence of the arc-shaped embedding block 8. A connecting rod 9 is fixedly connected to the outer wall surface of the first connecting ring 7. The connecting rod 9 is an elastic block. One end of the connecting rod 9 far from the first connecting ring 7 is fixedly connected to an arc-shaped plate 10. A collision ball 11 is fixedly connected to the side wall surface of the arc-shaped plate 10 far from the connecting rod 9.

[0025] The auxiliary vibration mechanism further includes a second connecting ring 12, an L-shaped linkage rod 13 and an L-shaped dial 18. A second connecting ring 12 is movably sleeved on the connecting column 5 below the first connecting ring 7. The upper wall surface of the second connecting ring 12 is movably connected to the lower wall surface of the first connecting ring 7 through a bearing. Therefore, when the first connecting ring 7 rotates on the spiral guiding groove 6, the second connecting ring 12 can maintain a non-rotating state. Two L-shaped linkage rods 13 are symmetrically and fixedly connected to the outer wall surface of the second connecting ring 12. Two first moving holes 15 are formed on the outer wall of the fixed mold 2 corresponding to the positions of the two L-shaped linkage rods 13. The L-shaped linkage rods 13 penetrate through the corresponding first moving holes 15 and extend to the outside of the fixed mold 2. The horizontal heights of the top surfaces of the vertical ends of the two L-shaped linkage rods 13 are higher than the horizontal height of the upper wall surface of the fixed mold 2. The vertical ends of the two L-shaped linkage rods 13 correspond to the two extrusion blocks 16 on the moving mold 3 up and down. Therefore, when the extrusion blocks 16 move downward along with the moving mold 3, the extrusion blocks 16 will contact the top surfaces of the corresponding vertical ends of the L-shaped linkage rods 13 and squeeze the corresponding L-shaped linkage rods 13 downward. When the L-shaped linkage rods 13 are squeezed and moved downward by the extrusion blocks 16, the second connecting ring 12 will drag the first connecting ring 7 to move downward on the connecting column 5. At this time, the first connecting ring 7 will rotate automatically under the action of the arc-shaped embedding block 8. Six L-shaped dials 18 are connected in a circular array with the center point of the inner top surface of the auxiliary groove 4 as the center on the inner top surface of the auxiliary groove 4.

[0026] By providing a limiting piece 19 on the lower wall surface of the connecting column 5, the position of the second connecting ring 12 can be limited during use, so as to prevent it from separating from the connecting column 5 under the extrusion of the moving mold 3. The limiting piece 19 plays a role in limiting the second connecting ring 12 and ensures the normal operation of the equipment.

[0027] The six L-shaped paddles 18 are all L-shaped blocks. The cross-sections of the horizontal ends of the six L-shaped paddles 18 near one end of the connecting column 5 are all conical. The distances between the mutually approaching ends of the six L-shaped paddles 18 and the connecting column 5 are the same. The distances between the vertical ends of the six L-shaped paddles 18 and the connecting column 5 at the connection points with the inner top surface of the auxiliary groove 4 are all different. The horizontal ends of the six L-shaped paddles 18 are arranged in a staggered height. The distance between the mutually approaching ends of the six L-shaped paddles 18 and the side wall surface of the arc-shaped plate 10 away from the connecting column 5 is smaller than the diameter of the collision ball 11, as shown in the spiral guiding groove 6.

[0028] During use, first inject the molten metal required for casting into the interior of the fixed mold 2. Subsequently, start the hydraulic telescopic rod on the moving mold 3 to drive the moving mold 3 to move downward. At this time, the extrusion block 16 on the moving mold 3 will first come into contact with the corresponding L-shaped linkage rod 13. And as the moving mold 3 continues to fall, the extrusion block 16 will squeeze the L-shaped linkage rod 13 to move downward, causing the second connecting ring 12 to drag the first connecting ring 7 to move downward on the connecting column 5. At this time, the first connecting ring 7 will rotate self-driven under the action of the arc-shaped embedding block 8. Therefore, the connecting rod 9 will drive the arc-shaped plate 10 and the collision ball 11 to make a circular motion with the connecting column 5 as the center. During this period, when the arc-shaped plate 10 passes by a certain L-shaped paddle 18, since the distance between the mutually approaching ends of the six L-shaped paddles 18 and the side wall surface of the arc-shaped plate 10 away from the connecting column 5 is smaller than the diameter of the collision ball 11, the collision ball 11 will collide and contact the side of the L-shaped paddle 18 close to the arc-shaped plate 10. It is not until the connecting rod 9 is deformed and bent by the force that the collision ball 11 will separate from the corresponding L-shaped paddle 18. Subsequently, as the first connecting ring 7 continues to rotate and continuously collides and contacts with the L-shaped paddles 18 at other positions, the L-shaped paddles 18 in contact with it will generate vibrations in this way. The acting force generated by the vibration of the L-shaped paddle 18 will cause the liquid molecules and bubbles in the molten metal inside the fixed mold 2 to perform high-frequency reciprocating motions, making the bubbles collide due to the difference in motion speed, resulting in the thinning and rupture of the liquid film on the surface of the bubbles, and the small bubbles coalesce into large bubbles. The buoyancy of the large bubbles increases significantly, making it easier to float to the liquid surface and be discharged. Thus, it can effectively discharge the gas in the metal inside the fixed mold 2, avoiding problems such as air pockets and bulges in the formed workpiece, improving the product qualification rate, and thereby reducing the production cost.

[0029] Since the cross-sections of the horizontal ends of the six L-shaped paddles 18 near one end of the connecting column 5 are all conical, it can produce a better vibration effect after the collision ball 11 collides and contacts with it. At the same time, the distances between the vertical ends of the six L-shaped paddles 18 and the connecting column 5 at the connection points with the inner top surface of the auxiliary groove 4 are all different, and the horizontal ends of the six L-shaped paddles 18 are arranged in a staggered height, greatly increasing the contact range with the fixed mold 2. Therefore, it can effectively exhaust the molten metal at different positions inside the fixed mold 2.

[0030] Both upper ends of the vertical ends of the two L-shaped linkage rods 13 are fixedly connected with clamping blocks 14. The clamping blocks 14 are composed of diamond-shaped blocks and rectangular blocks. The upper wall surface of the diamond-shaped block on the clamping block 14 is fixedly connected to the upper wall surface of the rectangular block on the clamping block 14. The clamping blocks 14 are elastic blocks. A sleeve hole 17 is opened at the position corresponding to the clamping block 14 on the extrusion block 16. The internal length of the sleeve hole 17 is smaller than the maximum diameter of the diamond-shaped block on the clamping block 14, and the internal length of the sleeve hole 17 is larger than the length of the rectangular block on the clamping block 14.

[0031] Since the internal length of the sleeve hole 17 is smaller than the maximum diameter of the diamond-shaped block on the clamping block 14 and the internal length of the sleeve hole 17 is larger than the length of the rectangular block on the clamping block 14, during the process of the extrusion block 16 pressing down the L-shaped linkage rod 13, the clamping block 14 on the L-shaped linkage rod 13 will be movably clamped inside the corresponding sleeve hole 17 under the influence of the pressing force of the extrusion block 16. The diamond-shaped block on the clamping block 14 will penetrate through the inside of the sleeve hole 17 and extend above the extrusion block 16. This makes it so that when the moving mold 3 is separated from the fixed mold 2, the extrusion block 16 will drive the L-shaped linkage rod 13 to move upward and reset under the influence of the diamond-shaped block on the clamping block 14 until the L-shaped linkage rod 13 returns to the initial position and cannot move. At this time, after the clamping block 14 is deformed by force, it can be separated from the sleeve hole 17 again, thus facilitating the repeated operation of the device. At the same time, during the upward movement of the L-shaped linkage rod 13, the collision ball 11 will also collide with the L-shaped flap 18 to make it vibrate, and this vibration can play a role in assisting demolding at this time.

[0032] The ejection mechanism includes a U-shaped lifting block 26, an ejector post 28, and an air pump 31. Two second moving holes 24 are symmetrically opened on the left and right inner side walls of the auxiliary groove 4. U-shaped lifting blocks 26 that can move up and down are movably clamped inside both of the two second moving holes 24. Both ends of the U-shaped lifting block 26 extend into the inside of the auxiliary groove 4 and the outside of the fixed mold 2 respectively. On the upper wall surface of the end of the U-shaped lifting block 26 located inside the auxiliary groove 4, two rotatable ejector posts 28 are installed through bearings. The two ejector posts 28 correspond to the positions of the two sealing blocks 21 on the same side up and down. A communication hole 22 is opened on the inner bottom surface of the embedding groove 20. The upper end of the ejector post 28 extends into the inside of the corresponding communication hole 22, and the upper end of the ejector post 28 is fixedly connected to the lower wall surface of the corresponding sealing block 21. Air pumps 31 are fixedly installed on the outside of the main device 1 at the positions corresponding to the two U-shaped lifting blocks 26 through mounting plates 30. The output ends of the air pumps 31 are fixedly connected to the lower wall surfaces of the corresponding U-shaped lifting blocks 26.

[0033] During use, after casting is completed, the staff starts the air pump 31 to drive the U-shaped lifting block 26 to move upward inside the corresponding second moving hole 24. When the U-shaped lifting block 26 moves upward, it will drive the ejector pin 28 upward to push up the sealing block 21, so that the workpiece formed inside the fixed mold 2 can be ejected. Since there are four sealing blocks 21 in total, the integrity of demolding can be greatly ensured by simultaneous multi-directional lifting.

[0034] An auxiliary sliding groove 29 is formed on the outer wall surface of the ejector pin 28. The auxiliary sliding groove 29 is a spiral groove. An auxiliary sliding block 23 is fixedly installed on the inner wall surface of the communication hole 22 at a position corresponding to the auxiliary sliding groove 29. The auxiliary sliding block 23 is movably clamped inside the corresponding auxiliary sliding groove 29. Therefore, when the ejector pin 28 pushes up the sealing block 21 with the U-shaped lifting block 26 upward, the ejector pin 28 rotates during the upward movement under the influence of the auxiliary sliding block 23 and the auxiliary sliding groove 29, thereby driving the sealing block 21 to rotate. The force generated by the rotation of the sealing block 21 can enable it to be quickly separated from the workpiece formed inside the fixed mold 2, thus further improving the demolding efficiency.

[0035] Two T-shaped sliding grooves 25 are symmetrically formed on the inner wall surface of the second moving hole 24. Two T-shaped sliding blocks 27 are fixedly connected to the outer wall surface of the U-shaped lifting block 26 at positions corresponding to the two T-shaped sliding grooves 25. The T-shaped sliding blocks 27 are movably clamped inside the corresponding T-shaped sliding grooves 25. By means of the T-shaped sliding blocks 27 provided on the U-shaped lifting block 26, in cooperation with the T-shaped sliding grooves 25 inside the second moving hole 24, the effect of ensuring the stable upward movement of the U-shaped lifting block 26 can be achieved.

[0036] A sealing ring 32 for improving the sealing performance after the fixed mold 2 and the moving mold 3 are closed is fixedly connected to the upper wall surface of the fixed mold 2.

[0037] The working principle of the present invention is: During use, first inject the molten metal required for casting into the interior of the fixed mold 2. Subsequently, start the hydraulic telescopic rod on the movable mold 3 to drive the movable mold 3 to move downward. At this time, the extrusion block 16 on the movable mold 3 will first come into contact with the corresponding L-shaped linkage rod 13. And as the movable mold 3 continues to descend, the extrusion block 16 will squeeze the L-shaped linkage rod 13 to move downward, causing the second connecting ring 12 to drag the first connecting ring 7 to move downward on the connecting column 5. At this time, the first connecting ring 7 will rotate on its own under the action of the arc-shaped embedding block 8. Therefore, the connecting rod 9 will drive the arc-shaped plate 10 and the collision ball 11 to perform circular motion with the connecting column 5 as the center. During this period, when the arc-shaped plate 10 passes by a certain L-shaped flap 18, since the distance between the mutually approaching ends of the six L-shaped flaps 18 and the side wall surface of the arc-shaped plate 10 away from the connecting column 5 is smaller than the diameter of the collision ball 11, the collision ball 11 will collide and contact the side of the L-shaped flap 18 close to the arc-shaped plate 10. It is not until the connecting rod 9 is deformed and bent by the force that the collision ball 11 will separate from the corresponding L-shaped flap 18. Subsequently, as the first connecting ring 7 continues to rotate and continuously collides and contacts the L-shaped flaps 18 at other positions, the L-shaped flaps 18 in contact with it will generate vibrations. The acting force generated by the vibration of the L-shaped flaps 18 will cause the liquid molecules and bubbles in the molten metal inside the fixed mold 2 to perform high-frequency reciprocating motion, causing the bubbles to collide due to the difference in movement speed, resulting in the thinning and rupture of the liquid film on the surface of the bubbles, the aggregation of small bubbles into large bubbles, and the buoyancy of the large bubbles increasing significantly, making it easier to float to the liquid surface and be discharged. Thus, it can effectively discharge the gas in the metal inside the fixed mold 2, avoid problems such as air pockets and bulges in the formed workpiece, improve the product qualification rate, and thus reduce the production cost.

[0038] Since the internal length of the sleeve hole 17 is smaller than the maximum diameter of the diamond-shaped block on the clamping block 14, and the internal length of the sleeve hole 17 is greater than the length of the rectangular block on the clamping block 14, during the period when the extrusion block 16 squeezes the L-shaped linkage rod 13 downward, the clamping block 14 on the L-shaped linkage rod 13 will, under the influence of the squeezing force of the extrusion block 16, cause the clamping block 14 to be movably clamped inside the corresponding sleeve hole 17. Among them, the diamond-shaped block on the clamping block 14 will penetrate through the interior of the sleeve hole 17 and extend above the extrusion block 16. This makes it so that when the movable mold 3 separates from the fixed mold 2, under the influence of the diamond-shaped block on the clamping block 14, the extrusion block 16 will drive the L-shaped linkage rod 13 to move upward and reset until the L-shaped linkage rod 13 returns to the initial position and cannot move. At this time, after the clamping block 14 is deformed by the force, it can separate from the sleeve hole 17 again, thus facilitating the repeated operation of this device. At the same time, during the upward movement of the L-shaped linkage rod 13, the collision ball 11 will also collide with the L-shaped flap 18 to make it vibrate, and this vibration can play a role in assisting demolding at this time.

[0039] During use, after casting is completed, the staff starts the air pump 31 to drive the U-shaped lifting block 26 to move upward inside the corresponding second moving hole 24. When the U-shaped lifting block 26 moves upward, it will drive the ejector pin 28 upward to lift the sealing block 21, so that the workpiece formed inside the fixed mold 2 can be ejected. Since there are four sealing blocks 21 in total, the integrity of mold ejection can be greatly ensured by simultaneous multi-directional lifting. The auxiliary slider 23 is movably clamped inside the corresponding auxiliary chute 29. Therefore, when the ejector pin 28 lifts the sealing block 21 upward along with the U-shaped lifting block 26, the ejector pin 28 will rotate during the upward movement under the influence of the auxiliary slider 23 and the auxiliary chute 29, thereby driving the sealing block 21 to rotate. The force generated by the rotation of the sealing block 21 can enable it to quickly separate from the workpiece formed inside the fixed mold 2, thus further improving the demolding efficiency.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should all be covered by the protection scope of the present invention.

Claims

1. A casting device for manufacturing automotive body metal parts using new materials, comprising a main device (1), wherein a fixed mold (2) is fixedly installed on the inner bottom surface of the main device (1), and a movable mold (3) capable of moving up and down is connected above the main device (1) corresponding to the position of the fixed mold (2) through a hydraulic telescopic rod, and the characteristics are as follows: An auxiliary groove (4) is formed at the bottom of the fixed mold (2). A connecting column (5) is fixedly connected to the center point of the inner top surface of the auxiliary groove (4). An auxiliary vibration mechanism for assisting in removing gas from the molten metal is arranged on the connecting column (5). Four embedding grooves (20) are symmetrically formed inside the fixed mold (2). Sealing blocks (21) are movably clamped inside the four embedding grooves (20). An ejection mechanism for assisting in ejecting the formed mold is arranged inside the auxiliary groove (4). Two extrusion blocks (16) capable of driving the auxiliary vibration mechanism to operate by extrusion are symmetrically and fixedly connected to the outer wall surface of the moving mold (3).

2. The casting device for manufacturing automotive body metal parts using new materials according to claim 1, characterized in that, The auxiliary vibration mechanism includes a first connecting ring (7), an arc-shaped embedding block (8), a connecting rod (9), an arc-shaped plate (10), and a collision ball (11). A spiral guiding groove (6) is formed on the connecting column (5). A first connecting ring (7) is movably sleeved on the connecting column (5). An arc-shaped embedding block (8) is fixedly connected to the inner wall surface of the first connecting ring (7). The arc-shaped embedding block (8) is movably clamped inside the spiral guiding groove (6). A connecting rod (9) is fixedly connected to the outer wall surface of the first connecting ring (7). An arc-shaped plate (10) is fixedly connected to the end of the connecting rod (9) away from the first connecting ring (7). A collision ball (11) is fixedly connected to the side wall surface of the arc-shaped plate (10) away from the connecting rod (9).

3. The casting device for manufacturing automotive body metal parts using new materials according to claim 2, characterized in that, The auxiliary vibration mechanism further includes a second connecting ring (12), an L-shaped linkage rod (13), and an L-shaped dial (18). A second connecting ring (12) is movably sleeved on the connecting column (5) below the first connecting ring (7). The upper wall surface of the second connecting ring (12) is movably connected to the lower wall surface of the first connecting ring (7) through a bearing. Two L-shaped linkage rods (13) are symmetrically and fixedly connected to the outer wall surface of the second connecting ring (12). Two first moving holes (15) are formed on the outer wall surface of the fixed mold (2) corresponding to the positions of the two L-shaped linkage rods (13). The L-shaped linkage rods (13) penetrate through the corresponding first moving holes (15) and extend to the outside of the fixed mold (2). The vertical ends of the two L-shaped linkage rods (13) are vertically corresponding to the two extrusion blocks (16) on the moving mold (3). Six L-shaped dials (18) are connected in a circular array with the center point of the inner top surface of the auxiliary groove (4) as the center on the inner top surface of the auxiliary groove (4).

4. The casting device for manufacturing automotive body metal parts using new materials according to claim 3, characterized in that, The six L-shaped dials (18) are all L-shaped blocks. The cross-sections of the ends of the horizontal parts of the six L-shaped dials (18) close to the connecting column (5) are all conical. The distances between the ends of the six L-shaped dials (18) close to each other and the connecting column (5) are the same. The distances between the connection points of the vertical parts of the six L-shaped dials (18) and the inner top surface of the auxiliary groove (4) and the connecting column (5) are all different. The horizontal parts of the six L-shaped dials (18) are arranged with staggered heights. The distance between the ends of the six L-shaped dials (18) close to each other and the side wall surface of the arc-shaped plate (10) away from the connecting column (5) is smaller than the diameter of the collision ball (11).

5. The casting device for manufacturing automotive body metal parts using new materials according to claim 3, characterized in that, Both upper ends of the vertical ends of the two L-shaped linkage rods (13) are fixedly connected with clamping blocks (14). The clamping blocks (14) are composed of diamond-shaped blocks and rectangular blocks. The upper wall surfaces of the diamond-shaped blocks and the rectangular blocks on the clamping blocks (14) are fixedly connected. The clamping blocks (14) are elastic blocks. A sleeve hole (17) is formed in the extrusion block (16) at a position corresponding to the clamping block (14). The internal length of the sleeve hole (17) is smaller than the maximum diameter of the diamond-shaped block on the clamping block (14), and the internal length of the sleeve hole (17) is larger than the length of the rectangular block on the clamping block (14).

6. The casting device for manufacturing automotive body metal parts using new materials according to claim 1, characterized in that, The ejection mechanism includes a U-shaped lifting block (26), a top column (28), and an air pump (31). Two second moving holes (24) are symmetrically formed in the left and right side walls inside the auxiliary groove (4). A U-shaped lifting block (26) capable of moving up and down is movably clamped inside each of the two second moving holes (24). Two ends of the U-shaped lifting block (26) respectively extend into the auxiliary groove (4) and the outside of the fixed mold (2). Two rotatable top columns (28) are mounted on the upper wall surface of one end of the U-shaped lifting block (26) located inside the auxiliary groove (4) through bearings. The two top columns (28) correspond to the positions of the two sealing blocks (21) on the same side in the up and down direction. A communication hole (22) is formed in the bottom surface inside the embedding groove (20). The upper end of the top column (28) extends into the corresponding communication hole (22). The upper end of the top column (28) is fixedly connected to the lower wall surface of the corresponding sealing block (21). Air pumps (31) are fixedly mounted on the outside of the main device (1) at positions corresponding to the two U-shaped lifting blocks (26) through mounting plates (30). The output ends of the air pumps (31) are fixedly connected to the lower wall surfaces of the corresponding U-shaped lifting blocks (26).

7. A casting device for manufacturing automotive body metal parts using new materials according to claim 6, characterized in that, An auxiliary sliding groove (29) is formed in the outer wall surface of the top column (28). The auxiliary sliding groove (29) is a spiral groove. An auxiliary sliding block (23) is fixedly mounted on the inner wall surface of the communication hole (22) at a position corresponding to the auxiliary sliding groove (29). The auxiliary sliding block (23) is movably clamped inside the corresponding auxiliary sliding groove (29).

8. A casting device for manufacturing automotive body metal parts using new materials according to claim 6, characterized in that, Two T-shaped sliding grooves (25) are symmetrically formed in the inner wall surface of the second moving hole (24). Two T-shaped sliding blocks (27) are fixedly connected to the outer wall surface of the U-shaped lifting block (26) at positions corresponding to the two T-shaped sliding grooves (25). The T-shaped sliding blocks (27) are movably clamped inside the corresponding T-shaped sliding grooves (25).

9. The casting device for manufacturing automotive body metal parts using new materials according to claim 1, characterized in that, A sealing ring (32) for improving the sealing performance after the fixed mold (2) and the moving mold (3) are closed is fixedly connected to the upper wall surface of the fixed mold (2).

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