A copper bushing mold with easy demolding

Abstract

The application belongs to the technical field of casting molds, and particularly discloses an embedded copper sleeve mold facilitating demolding, which comprises a base, an upper mold base and a lower mold base, the lower mold base is fixedly arranged on the upper surface of the base, the base is connected with the upper mold base through hydraulic rods arranged on the two sides of the upper mold base, and the upper mold base is driven to move downward to cooperate with the lower mold base to perform mold closing and casting, a mold cavity is arranged in the lower mold base, a mold is arranged in the mold cavity, a top mold assembly is slidably arranged in the lower part of the mold, and a ball bearing is rotatably arranged in the lower part of the top mold assembly, a fixing seat is fixedly arranged on the outer rear end of the lower mold base, and a resisting plate is connected with the fixing seat through a sliding element arranged on the outside, the application knocks the outer wall of the mold through a vibrating plate to loosen and fall off the bonded sand particles, and then the casting is smoothly knocked out through the top mold assembly, so that the problem of demolding difficulty caused by the bonding of sand particles is effectively solved, and the application has the advantages of smooth demolding, high casting yield, low mold maintenance cost and the like.

Description

Technical Field

[0001] This invention belongs to the field of casting mold technology, and specifically discloses an inlaid copper sleeve mold that is easy to demold. Background Technology

[0002] In sand casting, the production of inlaid copper sleeve castings typically employs die casting with an upper mold base. After casting, due to the physical and chemical reactions between the high-temperature molten metal and the sand mold and copper sleeve surface, sand particles tend to adhere to the outer wall of the copper sleeve to varying degrees. This adhesion phenomenon significantly increases the resistance during demolding. Traditional direct ejection not only makes demolding difficult but also easily causes damage to the copper sleeve surface, localized cracking of the sand mold, and even leads to the scrapping of the casting. To address the aforementioned problems, some improvements have been implemented, such as coating the inner wall of the mold with a release agent or increasing the number of ejector pins. However, these methods have limited effectiveness in improving sand adhesion, and the release agent may affect the surface quality of the casting. Therefore, there is an urgent need for a mold structure that can effectively reduce demolding resistance, improve demolding efficiency, and not damage the casting.

[0003] To address the shortcomings of existing technologies, a mold for easily demolding copper sleeves is provided. After casting, the mold shell is first subjected to rapid vibration and tapping to loosen and remove adhering sand particles. Then, demolding is performed through a top mold mechanism, thereby significantly improving the smoothness and efficiency of demolding and reducing the risk of casting damage. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the background art, and to propose an easy-to-demold inlaid copper sleeve mold, including a base, an upper mold base, and a lower mold base. The lower mold base is fixedly mounted on the upper surface of the base. The base is connected to the upper mold base through hydraulic rods correspondingly arranged on both sides above, which drive the upper mold base to move downward to cooperate with the lower mold base in mold closing and casting. The lower mold base has a mold cavity inside, and a mold is arranged inside the mold cavity. A top mold assembly is slidably arranged at the lower part of the mold. A ball bearing is rotatably embedded at the lower part of the top mold assembly. A fixing seat is fixedly installed on the outer rear end of the lower mold base. The fixed base is connected to a backing plate via an externally mounted sliding member. A sliding shell is fixedly installed at one end of the backing plate. The sliding shell slides outside the fixed base and is connected to a lifting base via an internally mounted second cylinder. Rotary pressing members are provided on both sides of the lifting base. A vibrating plate is correspondingly connected to the lifting base via a rotating shaft mounted at both ends inside. A vibrating member is provided at the lower part inside the vibrating plate. A fixed rod is fixedly installed on the outside of the lifting base near the top. A cylinder is connected to one end of the fixed rod. Elastic restoring members are provided on both sides inside the cylinder.

[0005] In the above technical solution, the sliding member further includes a first cylinder, one end of which is fixed to the outside of the fixed base, and the telescopic end of the first cylinder is fixedly connected to the outer wall of the abutment plate.

[0006] In the above technical solution, the rotating pressing component further includes a motor, which is fixedly installed outside the lifting seat, and a cam is fixedly sleeved on the outside of the motor output end.

[0007] In the above technical solution, the vibrating element further includes two vibrating beads, which are respectively embedded in the lower part of the vibrating plate.

[0008] In the above technical solution, the elastic restoring component further includes a rectangular groove formed on one side of the inside of the cylinder, a clamping rod is vertically connected inside the rectangular groove, a guide block is slidably sleeved on the outside of the clamping rod, an abutment is provided on the upper surface of the guide block, and a spring is sleeved on the outside of the clamping rod and near the bottom of the guide block, one end of the spring is connected to the bottom of the guide block, and the other end is connected to the bottom of the rectangular groove.

[0009] In the above technical solution, the abutting member further includes a retaining bead, and a cylindrical shell is sleeved on the outside of the retaining bead. The bottom of the cylindrical shell is fixedly installed on the upper surface of the guide block.

[0010] In the above technical solution, a curved rod is fixedly installed below the guide block, and a corner block is fixedly connected to the end of the curved rod away from the guide block. The end of the corner block away from the curved rod is fixedly connected to the outer wall of the vibration plate.

[0011] In the above technical solution, the sliding shell is further provided with a sliding groove adapted to the up and down movement of the lifting seat. A slider is slidably sleeved on the upper part of the abutment plate. An anti-slip pad is installed on the upper part of the abutment plate. Insert rods are fixedly installed on both sides of the slider. Connecting rods are connected to the lower part of the two insert rods. The lower ends of the two connecting rods are connected to the top mold curved seat. A screw pin is threaded through both sides of the slider. The bottom of the screw pin is pressed against the upper surface of the anti-slip pad.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. After the casting is completed, the present invention uses a sliding component to drive the sliding shell to move horizontally, and combines this with the first cylinder to drive the lifting seat to move vertically. This allows the vibrating plate to smoothly pass over the edge of the lower mold base and then descend to the outer wall of the mold cavity area. This enables flexible positioning in narrow or irregular mold structures during operation, avoids interference with other parts of the mold, and significantly improves the applicability and operational safety of the equipment. In addition, by using the cam in the rotating pressing component to periodically contact the ball, the cam drives the guide block to slide along the locking rod. With the elastic reset of the spring, the vibrating plate can closely fit the outer wall of the mold and vibrate repeatedly, effectively loosening and removing the sand particles that adhere to the surface of the copper sleeve during the casting process, reducing the resistance of subsequent top mold demolding.

[0013] 2. This invention utilizes a slider and screw structure located at the outer rear end of the support plate. After the front end vibration and hammering operation is completed, the connecting rod and the top mold crank seat continuously push the support plate to the front end, causing one end of the top mold crank seat to contact the ball bearings of the top mold assembly. Since the curved surface of the top mold crank seat extends upward, the ball bearings and the top mold assembly, in conjunction with the movement of the top mold crank seat, lift the casting upward. This effectively solves the problems of difficult demolding and easy damage to castings caused by sand particles adhering to traditional inlaid copper sleeve molds. It has significant advantages such as smooth demolding, high casting yield, and low mold maintenance costs, and is suitable for mass production of inlaid copper sleeve castings in sand casting. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 This is a schematic diagram of the connection structure between the lower mold base, the fixed base, and the abutment plate of the present invention; Figure 4 This is a schematic diagram of the connection structure between the lower mold base, the mold cavity, and the top mold assembly of the present invention; Figure 5 This is a schematic diagram of the connection structure between the sliding shell and the sliding component of the present invention; Figure 6 This is a schematic diagram of the connection structure between the lifting seat and the rotating pressing member of the present invention; Figure 7 This is a schematic diagram of the connection structure between the vibration plate and the vibration recovery component of the present invention.

[0015] In the diagram: 1. Base; 2. Upper mold base; 3. Lower mold base; 4. Sliding shell; 5. Hydraulic rod; 6. Support plate; 7. Connecting rod; 8. Top mold crank seat; 9. Top mold assembly; 10. Insert rod; 11. Lifting seat; 12. Slide groove; 13. Anti-slip pad; 14. Slider; 15. Rotary pin; 16. First cylinder; 17. Mold; 18. Ball bearing; 19. Guide block; 20. Vibrating plate; 21. Fixed rod; 22. Fixed seat; 23. Motor; 24. Rotating shaft; 25. Second cylinder; 26. Cam; 27. Vibrating ball; 28. Corner block; 29. ​​Curved rod; 30. Locking rod; 31. Cylinder; 32. Locking ball; 33. Spring. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0018] like Figures 1-7 The mold shown is an easy-to-demold inlaid copper sleeve mold, including a base 1, an upper mold base 2, and a lower mold base 3. The lower mold base 3 is fixedly mounted on the upper surface of the base 1. The base 1 is connected to the upper mold base 2 through hydraulic rods 5 correspondingly arranged on both sides above, which drive the upper mold base 2 to move down and cooperate with the lower mold base 3 to close the mold for casting. The lower mold base 3 has a mold cavity inside, and a mold 17 is arranged inside the mold cavity. A top mold assembly 9 is slidably arranged at the lower part of the mold 17. A ball bearing 18 is rotatably embedded at the lower part of the top mold assembly 9. A fixing seat 22 is fixedly installed on the rear end of the lower mold base 3. The fixing seat 22 is connected to the upper mold base 3 through an externally arranged sliding... The moving part is connected to the abutment plate 6. A sliding shell 4 is fixedly installed at one end of the abutment plate 6. The sliding shell 4 slides outside the fixed seat 22. The sliding shell 4 is connected to the lifting seat 11 through the second cylinder 25 set inside. Rotating pressing parts are provided on both sides of the lifting seat 11. The lifting seat 11 is connected to the vibrating plate 20 through the rotating shaft 24 installed at both ends inside. A vibrating part is provided at the bottom inside the vibrating plate 20. A fixing rod 21 is fixedly installed on the outside of the lifting seat 11 and near the top. A cylinder 31 is connected to one end of the fixing rod 21. Elastic restoring parts are provided on both sides inside the cylinder 31. In this embodiment, after casting is completed, the sliding member pushes the sliding shell 4 to move horizontally to the front end, so that the vibrating plate 20 reaches the edge of the lower mold base 3. Then, the second cylinder 25 drives the lifting seat 11 to rise, so that the vibrating plate 20 first passes the lower mold base 3, and then drives the lifting seat 11 to fall, so that the vibrating plate 20 is close to the outer wall of the mold 17. The rotating pressing member periodically presses the elastic restoring member, causing the vibrating plate 20 to swing back and forth around the rotating shaft 24 and knock on the outer wall of the mold 17. At the same time, the vibrating member generates high-frequency micro-vibration, which loosens and falls off the sand particles that are stuck to the surface of the copper sleeve due to high temperature. Then the sliding member continues to move forward, and the top mold assembly 9 cooperates with the ball bearing 18 to push the casting upward.

[0019] The sliding component includes a first cylinder 16, one end of which is fixed to the outside of the fixed base 22, and the telescopic end of the first cylinder 16 is fixedly connected to the outer wall of the abutment plate 6. In this embodiment, when it is necessary to move the abutment plate 6 or the top mold assembly 9 horizontally, the extension end of the first cylinder 16 drives the abutment plate 6 to slide along the top of the fixed seat 22, thereby driving the sliding shell 4, the lifting seat 11 and the vibration plate 20 to slide as a whole.

[0020] The rotating pressing component includes a motor 23, which is fixedly installed outside the lifting seat 11, and a cam 26 is fixedly sleeved on the output end of the motor 23. In this embodiment, when the vibrating plate 20 needs to generate a striking action to loosen the bonded sand particles, the motor 23 is started, and the output shaft of the motor 23 drives the cam 26 to rotate. During the rotation, the protruding part of the cam 26 periodically contacts and presses down on the abutment of the elastic restoring member, thereby driving the guide block 19 and the vibrating plate 20 to move; the non-protruding part of the cam 26 allows the elastic restoring member to reset, forming continuous striking; It should be noted that the two motors 23 can rotate in the same direction or in opposite directions. Depending on the worker's needs, they can drive the vibrating plate 20 to vibrate at the same frequency or at a different frequency.

[0021] The vibrating element includes two vibrating beads 27, which are respectively embedded in the lower part of the vibrating plate 20; In this embodiment, when the vibrating plate 20 repeatedly strikes the outer wall of the mold 17 under the drive of the rotating pressing member and the elastic restoring member, the vibrating plate 20 generates high-frequency oscillation. Due to inertia and the oscillation of the vibrating plate 20, the vibrating bead 27 also oscillates synchronously with the vibrating plate 20, and one side contacts the outer surface of the mold 17, generating high-frequency small-amplitude relative motion, further amplifying the vibration effect, so that the outer wall of the mold 17 is subjected to higher frequency micro-vibrations, thereby more effectively destroying the bonding interface between the sand particles and the copper sleeve.

[0022] The elastic restoring component includes a rectangular groove formed on one side inside the cylinder 31. A locking rod 30 is vertically connected inside the rectangular groove. A guide block 19 is slidably sleeved on the outside of the locking rod 30. An abutment is provided on the upper surface of the guide block 19. A spring 33 is sleeved on the outside of the locking rod 30 and near the bottom of the guide block 19. One end of the spring 33 is connected to the bottom of the guide block 19, and the other end is connected to the bottom of the rectangular groove. The abutment includes a locking bead 32. A cylindrical shell is sleeved on the outside of the locking bead 32. The bottom of the cylindrical shell is fixedly installed on the upper surface of the guide block 19. A curved rod 29 is fixedly installed below the guide block 19. A corner block 28 is fixedly connected to the end of the curved rod 29 away from the guide block 19. The end of the corner block 28 away from the curved rod 29 is fixedly connected to the outer wall of the vibrating plate 20. In this embodiment, when the cam 26 of the rotating pressing component presses down on the surface of the retaining bead 32, the smooth surface of the retaining bead 32 reduces sliding friction with the cam 26, effectively transmitting the radial pressure of the cam 26 to the guide block 19. The retaining bead 32 pushes the guide block 19 to slide downward along the retaining rod 30, causing the crank rod 29 to move. The crank rod 29 converts linear motion into the oscillation of the vibrating plate 20 around the rotating shaft 24 through the corner block 28. The curved shape of the crank rod 29 can avoid other components around the mold 17. After the cam 26 rotates past the pressure point, the spring 33 releases its elastic potential energy, pushing the guide block 19, the retaining ball 32 and the vibrating plate 20 to reset, forming a complete striking cycle.

[0023] The sliding shell 4 has a sliding groove 12 inside that is adapted to the up and down movement of the lifting seat 11. The upper part of the support plate 6 is slidably sleeved with a slider 14. The upper part of the support plate 6 is equipped with an anti-slip pad 13. The slider 14 is fixedly installed on both sides of the outside. The lower part of the two sliders 10 is connected to the connecting rods 7. The lower ends of the two connecting rods 7 are connected to the top mold curved seat 8. The slider 14 has screw pins 15 threaded through both sides of the inside. The bottom of the screw pins 15 is pressed against the upper surface of the anti-slip pad 13. In this embodiment, after the vibration sand removal is completed, the first cylinder 16 continues to push the abutment plate 6 forward, and the slider 14, insert rod 10, connecting rod 7, and top mold curved seat 8 move forward synchronously. The front end of the top mold curved seat 8 extends into the bottom of the lower mold base 3 and contacts the ball bearings 18 of the top mold assembly 9. Since the upper surface of the top mold curved seat 8 is an upwardly extending curved surface, the ball bearings 18 roll along the curved surface, forcing the top mold assembly 9 to slide upward and eject the casting. The slider 14 can slide on the abutment plate 6 to adjust its front and rear positions, and is locked by the screw pin 15 pressing the anti-slip pad 13 to adapt to the ejection requirements of castings of different sizes.

[0024] Working principle: During mold casting, hydraulic rod 5 drives the upper mold base 2 to move downwards, completing the mold closing with the lower mold base 3. Sand particles are pumped in through the upper mold base 2, causing them to form an inlaid copper sleeve casting within the mold 17. After casting is completed, hydraulic rod 5 drives the upper mold base 2 to reset. At this time, the first cylinder 16 is activated, and its telescopic end pushes the abutment plate 6, causing the abutment plate 6 to move the sliding shell 4 forward horizontally along the outside of the fixed base 22 until the sliding shell 4 moves to the side of the lower mold base 3. Then, the second cylinder 25 is activated, driving the lifting seat 11 to rise first, passing the edge of the lower mold base 3, and then driving the lifting seat 11 to move vertically downwards, causing the vibrating plates 20 on both sides of the lifting seat 11 to descend to align with the outer wall area of ​​the mold. At this time, the motor 23 is activated, and the output end of the motor 23 drives the cam 26 to rotate. During rotation, cam 26 periodically presses against retaining bead 32. Retaining bead 32 pushes guide block 19 downwards along retaining rod 30 via the cylinder shell, compressing spring 33. Simultaneously, guide block 19 drives vibrating plate 20 to swing outwards around shaft 24 via crank rod 29 and corner block 28. After cam 26 passes the pressing position, spring 33 returns to its original position, pushing guide block 19, crank rod 29, corner block 28, and vibrating plate 20 to move in the opposite direction, causing vibrating plate 20 to firmly strike the outer wall of mold 17. Vibrating beads 27 embedded in the lower part of vibrating plate 20 generate high-frequency micro-amplitude vibrations during the striking process, further intensifying the impact on the outer wall of mold 17, causing sand particles adhering to the copper sleeve surface to loosen and fall off. After vibration sand removal is completed, the top mold demolding is performed: the first cylinder 16 continues to push the abutment plate 6 forward, causing the slider 14, insert rod 10, connecting rod 7, and top mold crank seat 8 mounted on the front end of the abutment plate 6 to move forward accordingly. The front end of the top mold crank seat 8 gradually extends into the bottom of the lower mold base 3 and contacts the ball bearing 18 inside the bottom of the top mold assembly 9. Since the upper surface of the top mold crank seat 8 is an upwardly extending curved surface, as the top mold crank seat 8 continues to move forward, the ball bearing 18 rolls along the curved surface, forcing the top mold assembly 9 to slide upward at the bottom of the inner side of the mold cavity 17, thereby smoothly ejecting the cast inlaid copper sleeve casting from the mold cavity 17. During this process, the slider 14 can slide and adjust its position on the abutment plate 6, and is locked by pressing the anti-slip pad 13 with the rotating pin 15 to adapt to the ejection requirements of castings of different specifications. The entire demolding process sequentially completes vibration sand removal and mechanical ejection, effectively reducing demolding resistance and avoiding damage to the casting.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A mold for easily demolding inlaid copper sleeves, comprising a base (1), an upper mold base (2), and a lower mold base (3), characterized in that, The lower mold base (3) is fixedly mounted on the upper surface of the base (1). The base (1) is connected to the upper mold base (2) through hydraulic rods (5) correspondingly arranged on both sides above, and drives the upper mold base (2) to move down to cooperate with the lower mold base (3) in mold closing and casting. The lower mold base (3) is provided with a mold cavity inside. The mold cavity is provided with a mold (17). The mold (17) is slidably arranged with a top mold assembly (9) inside the lower part of the mold. The top mold assembly (9) is rotatably embedded with a ball bearing (18) inside the lower part of the mold assembly (9). A fixed seat (22) is fixedly installed on the rear end of the lower mold base (3). The fixed seat (22) is connected to a backing plate (6) through an externally arranged sliding member. The backing plate (6) is one A sliding shell (4) is fixedly installed at one end. The sliding shell (4) slides outside the fixed seat (22). The sliding shell (4) is connected to a lifting seat (11) through a second cylinder (25) inside. Rotary pressing parts are provided on both sides of the lifting seat (11). The lifting seat (11) is connected to a vibrating plate (20) through a rotating shaft (24) installed at both ends inside. A vibrating element is provided at the bottom inside the vibrating plate (20). A fixed rod (21) is fixedly installed on the outside of the lifting seat (11) and near the top. One end of the fixed rod (21) is connected to a cylinder (31). Elastic restoring parts are provided on both sides inside the cylinder (31).

2. The inlaid copper sleeve mold for easy demolding according to claim 1, characterized in that, The sliding component includes a first cylinder (16), one end of which is fixed to the outside of the fixed seat (22), and the telescopic end of the first cylinder (16) is fixedly connected to the outer wall of the abutment plate (6).

3. The inlaid copper sleeve mold for easy demolding according to claim 1, characterized in that, The rotating pressing component includes a motor (23), which is fixedly installed outside the lifting seat (11), and a cam (26) is fixedly sleeved on the output end of the motor (23).

4. The inlaid copper sleeve mold for easy demolding according to claim 1, characterized in that, The vibrating element includes two vibrating beads (27), which are respectively embedded in the lower part of the vibrating plate (20).

5. The inlaid copper sleeve mold for easy demolding according to claim 1, characterized in that, The elastic restoring component includes a rectangular groove formed on one side inside the cylinder (31). A locking rod (30) is vertically connected inside the rectangular groove. A guide block (19) is slidably sleeved on the outside of the locking rod (30). An abutment is provided on the upper surface of the guide block (19). A spring (33) is sleeved on the outside of the locking rod (30) and near the bottom of the guide block (19). One end of the spring (33) is connected to the bottom of the guide block (19), and the other end is connected to the bottom of the rectangular groove.

6. The inlaid copper sleeve mold for easy demolding according to claim 5, characterized in that, The abutting component includes a retaining bead (32), and a cylindrical shell is sleeved on the outside of the retaining bead (32). The bottom of the cylindrical shell is fixedly installed on the upper surface of the guide block (19).

7. The inlaid copper sleeve mold for easy demolding according to claim 5, characterized in that, A curved rod (29) is fixedly installed below the guide block (19). A corner block (28) is fixedly connected to one end of the curved rod (29) away from the guide block (19). The end of the corner block (28) away from the curved rod (29) is fixedly connected to the outer wall of the vibration plate (20).

8. The inlaid copper sleeve mold for easy demolding according to claim 1, characterized in that, The sliding shell (4) has a sliding groove (12) inside that is adapted to the up and down movement of the lifting seat (11). A slider (14) is slidably sleeved on the outside of the abutment plate (6). An anti-slip pad (13) is installed on the top of the abutment plate (6). Insert rods (10) are fixedly installed on both sides of the slider (14). Connecting rods (7) are connected to the bottom of the two insert rods (10). The lower ends of the two connecting rods (7) are connected to the top mold crank seat (8). A screw pin (15) is threaded through both sides of the slider (14). The bottom of the screw pin (15) is pressed against the upper surface of the anti-slip pad (13).

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