Diameter-variable metal casting mold and casting separating device

Abstract

The invention relates to the technical field of casting post-processing, and provides a variable-diameter metal mold and casting separation device which comprises a base assembly, a clamping assembly, an ejection assembly and a hydraulic control assembly, the clamping assembly comprises a clamping plate, a clamping oil cylinder and a rotating shaft, the rotating shaft penetrates through a rotating shaft hole in the clamping plate, a cylinder body of the clamping oil cylinder is hinged to the base assembly, and the ejection assembly is arranged on the base assembly. A first piston rod on the clamping oil cylinder is hinged to a hinge seat on the clamping plate, the hydraulic control assembly controls the clamping oil cylinder to drive the clamping plate to rotate around a rotating shaft so as to achieve opening and closing to clamp or loosen a casting mold, and the ejection assembly is arranged on the base assembly and controlled by the hydraulic control assembly so as to eject and separate a casting from the casting mold. Rapid and stable clamping of metal casting molds with different diameter specifications and stable and efficient ejection and separation of castings can be achieved, operation is convenient and fast, and adaptability is good.

Description

Technical Field

[0001] This invention relates to the field of casting post-processing technology, and in particular to a device for separating a metal mold with a variable diameter from a casting. Background Technology

[0002] With the development of aluminum alloy casting technology, differential pressure casting has been widely used due to its ability to produce high-quality, high-density castings. In the post-processing stage of this process, the safe and efficient separation of the solidified aluminum alloy casting from its metal mold is a crucial step affecting production cycle time, cost, and worker workload.

[0003] Currently, commonly used mold release machines exhibit several shortcomings in practical use. Firstly, their guiding mechanisms often employ simple hole-shaft combinations, lacking guide sleeves, resulting in poor guiding accuracy. Furthermore, the two guide shafts are prone to bending and deformation under long-term eccentric loading. Secondly, existing equipment typically only accommodates metal molds with a single outer diameter (e.g., Ø960mm), rendering it unusable when product specifications change, thus exhibiting poor versatility. Thirdly, the clamping mechanisms (such as four-jaw clamps) suffer from insecure clamping and misalignment, and the clamping cylinder shaft and connecting rod are prone to breakage under frequent stress, indicating insufficient reliability. In addition, existing equipment has limited power (e.g., a 7.5kW motor with a 32-ton thrust), and the ejection and return speeds (30mm / s and 60mm / s respectively) are insufficient to meet the high-efficiency requirements of mass production.

[0004] Chinese Patent CN105598423B discloses a casting demolding machine for cylindrical shell metal molds. This device uses a hydraulic clamping mechanism to hook the flange edge of the metal mold and a transverse hydraulic ejection mechanism to eject the casting from one or two sections of the metal mold, solving the problems of difficult demolding and easy damage to the shell of cylindrical shell castings. However, this device still has shortcomings such as requiring two reversals for clamping, a relatively complex demolding process, and limited efficiency.

[0005] Therefore, how to provide a metal mold and casting separation device that can adapt to various diameter specifications, provide precise and reliable guidance, clamp firmly and provide strong power has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] In view of this, in order to overcome the shortcomings of the prior art, the present invention aims to provide a variable diameter metal mold and casting separation device.

[0007] This invention provides a variable diameter metal mold and casting separation device. The device includes a base assembly, a clamping assembly, an ejection assembly, and a hydraulic control assembly. The clamping assembly includes a clamping plate, a clamping cylinder, and a rotating shaft. The rotating shaft passes through a rotating shaft hole in the clamping plate. The cylinder body of the clamping cylinder is hinged to the base assembly. The first piston rod on the clamping cylinder is hinged to a hinge seat on the clamping plate. The hydraulic control assembly controls the clamping cylinder to drive the clamping plate to rotate around the rotating shaft to achieve opening and closing to clamp or release the mold. The ejection assembly is disposed on the base assembly and controlled by the hydraulic control assembly to eject and separate the casting from the mold.

[0008] Optionally, the variable diameter metal mold and casting separation device of the present invention includes a base and two guide rails, the two guide rails being symmetrically fixedly installed on the upper surface of the base.

[0009] Optionally, the variable diameter metal mold and casting separation device of the present invention includes a mounting base, with supports symmetrically arranged on both sides of the mounting base, and a first through hole provided on the mounting base, with a plurality of second through holes arranged in an outer array around the first through hole.

[0010] Optionally, in the variable diameter metal mold and casting separation device of the present invention, the clamping plate is arc-shaped and is rotatably connected to the bracket of the mounting base via a rotating shaft.

[0011] Optionally, the variable diameter metal mold and casting separation device of the present invention further includes a tail frame and four sets of connecting rods. The tail frame is located at the side end of the base, and the two ends of the four sets of connecting rods are respectively connected and fixed to the mounting base and the tail frame.

[0012] Optionally, the variable diameter metal mold and casting separation device of the present invention further includes a support frame, which is fixedly disposed on the side of the base.

[0013] Optionally, the variable diameter metal mold and casting separation device of the present invention includes an ejection assembly comprising a hydraulic cylinder, one end of which is mounted on a support frame.

[0014] Optionally, the variable diameter metal mold and casting separation device of the present invention further includes a guide assembly in the ejection assembly. The guide assembly includes multiple guide rods, a pressure head and a support ring. The pressure head is connected to one end of the multiple guide rods, and the other end of the multiple guide rods is connected to the support ring. The guide rods are located in the second through hole of the mounting base. The hydraulic cylinder passes through the support ring, the tailstock and the first through hole of the mounting base in sequence. The second piston rod of the hydraulic cylinder is fixedly connected to the third through hole on the pressure head.

[0015] Optionally, the variable diameter metal mold and casting separation device of the present invention includes a hydraulic control component comprising an oil tank, a control cabinet, a hydraulic pump station, and a manual directional valve.

[0016] Optionally, the variable diameter metal mold and casting separation device of the present invention further includes a carriage, which has a loading cavity and rollers symmetrically installed at the lower end of the carriage. The carriage slides with the guide rail through the rollers.

[0017] The variable diameter metal mold and casting separation device of the present invention has the following beneficial technical effects: 1. Precise and stable guidance: The multi-bar guiding mechanism, combined with the guide sleeve, significantly improves motion accuracy and overall rigidity, effectively prevents the pressure head from tilting, and solves the problem of easy bending and deformation of traditional guide shafts, ensuring a smooth and reliable demolding process.

[0018] 2. High versatility: By equipping a bracket with multiple height interchangeable parts, a single unit can be adapted to metal molds with diameters ranging from 780mm to 1350mm, achieving multiple uses for one machine and greatly improving equipment utilization and production flexibility.

[0019] 3. Secure and reliable clamping: The hydraulic direct-push arc clamping mechanism provides a centered radial clamping force, with large and uniform clamping force, completely overcoming the defects of the original jaws that cannot clamp tightly, are misaligned, and are easy to break, thus ensuring high safety. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural example diagram of a variable-diameter metal mold and casting separation device according to an embodiment of the present invention; Figure 2 This is another structural example diagram of a variable-diameter metal mold and casting separation device according to an embodiment of the present invention; Figure 3 This is an example diagram of the base component structure according to an embodiment of the present invention; Figure 4 This is an example diagram of a clamping plate structure according to an embodiment of the present invention; Figure 5 This is an example diagram of another structure of the clamping plate according to an embodiment of the present invention; Figure 6 This is a partial example diagram of a variable diameter metal mold and casting separation device according to an embodiment of the present invention; Figure 7 This is an example diagram of the structure of a guide component according to an embodiment of the present invention; Figure 8 This is an example diagram of a bracket vehicle structure according to an embodiment of the present invention; Figure 9 This is another structural example diagram of a variable diameter metal mold and casting separation device according to an embodiment of the present invention; In the diagram, 1-base assembly, 2-clamping assembly, 3-ejection assembly, 4-carrier trolley, 5-hydraulic control assembly, 6-metal casting, 11-base, 12-guide rail, 13-mounting seat, 14-tailstock, 15-connecting rod, 16-support frame, 21-clamping plate, 22-clamping cylinder, 23-rotating shaft, 31-cylinder, 32-guide assembly, 41-loading cavity, 42-roller, 51-oil tank, 52-control cabinet, 53-hydraulic pump station, 54-manual directional valve, 61-casting, 131-bracket, 132-first through hole, 133-second through hole, 211-rotating shaft hole, 212-hinged seat, 221-first piston rod, 222-cylinder body, 311-second piston rod, 321-guide rod, 322-pressure head, 323-support ring, 3221-third through hole. Detailed Implementation

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Figure 1 This is a structural example diagram of a variable-diameter metal mold and casting separation device according to an embodiment of the present invention. Figure 2 This is another structural example diagram of a variable-diameter metal mold and casting separation device according to an embodiment of the present invention, as shown below. Figure 1 , Figure 2As shown, in this embodiment, a variable-diameter metal mold and casting separation device includes a base assembly 1, a clamping assembly 2, an ejection assembly 3, a support carriage 4, and a hydraulic control assembly 5. The clamping assembly 2 is mounted on the base assembly 1 and is used to grip the inner side of the flange of the mold to be separated. The ejection assembly 3 is also mounted on the base assembly 1 and is used to provide ejection force to separate the casting from the mold. The support carriage 4 is slidably fitted with the base assembly 1 and can be used to carry and position molds of different sizes. The hydraulic control assembly 5 is connected to the clamping assembly 2 and the ejection assembly 3 via pipes and is used to control the clamping and ejection actions.

[0026] Figure 3 This is an example diagram of the base component structure according to an embodiment of the present invention, such as... Figure 3 As shown, in this embodiment, the base assembly 1 includes a base 11, two guide rails 12, a mounting base 13, a tailstock 14, four sets of connecting rods 15, and a support frame 16. The guide rails 12 are symmetrically fixedly mounted on the upper surface of the base 11. The mounting base 13 is fixed to the base 11, and the tailstock 14 is located at the side end of the base 11. The two ends of the four sets of connecting rods 15 are respectively connected and fixed to the mounting base 13 and the tailstock 14. The support frame 16 is fixedly disposed on the side end of the base 11 and located behind the tailstock 14 to provide additional support.

[0027] According to an optional example, in this embodiment, brackets 131 are symmetrically arranged on both sides of the mounting base 13. A first through hole 132 is provided at the center of the mounting base 13 for the ejector component 3 to pass through. A plurality of second through holes 133 are evenly arranged in a circumferential direction around the first through hole 132.

[0028] Figure 4 This is an example diagram of a clamping plate structure according to an embodiment of the present invention. Figure 5 This is a diagram illustrating another structural example of a clamping plate according to an embodiment of the present invention. Figure 6 This is a partial example diagram of a variable-diameter metal mold and casting separation device according to an embodiment of the present invention, as shown below. Figures 1 to 6 As shown, in this embodiment, the clamping assembly 2 includes a clamping plate 21, a clamping cylinder 22, and a rotating shaft 23. The clamping plate 21 is arc-shaped, with rotating shaft holes 211 symmetrically provided at both ends of one side, and a hinge seat 212 provided on the other side. The cylinder body 222 of the clamping cylinder 22 is hinged to the tailstock 14, and its first piston rod 221 is hinged to the hinge seat 212 on the clamping plate 21 via a pin. The rotating shaft 23 passes through the rotating shaft hole 211 of the clamping plate 21, rotatably connecting the clamping plate 21 to the bracket 131 of the mounting base 13. Through the synchronous extension and retraction of the two clamping cylinders 22, the two symmetrically arranged clamping plates 21 can be driven to rotate around the rotating shaft 23 respectively, realizing the clamping or releasing action.

[0029] Figure 7 This is an example diagram of the structure of a guide component according to an embodiment of the present invention, such as... Figure 2 , Figure 7 As shown, in this embodiment, the ejection assembly 3 includes a hydraulic cylinder 31 and a guide assembly 32. The guide assembly 32 includes multiple guide rods 321, a pressure head 322, and a support ring 323. The pressure head 322 has a third through hole 3221. One end of the multiple guide rods 321 is connected to the pressure head 322, and the other end is connected to the support ring 323. One end of the hydraulic cylinder 31 is mounted on the support frame 16, and the other end of the hydraulic cylinder 31 passes through the first through hole 132 of the support ring tail frame 14 and the mounting base 13 in sequence. Finally, the second piston rod 311 of the hydraulic cylinder 31 is fixedly connected to the third through hole 3221 of the pressure head 322. When the second piston rod 311 of the hydraulic cylinder 31 extends, it drives the pressure head 322 of the guide assembly 32 to move linearly in the direction defined by the guide rods 321.

[0030] According to an optional example, in this embodiment, the guide rod 321 is located within the second through hole 133 of the mounting base 13, and a guide sleeve can be provided between them to ensure motion accuracy. The hydraulic cylinder 31 is preferably a large-diameter hydraulic cylinder to provide sufficient ejection force. To improve overall rigidity and resistance to eccentric loads, the number of guide rods 321 can be selected as six, and they are evenly arranged circumferentially.

[0031] Figure 8 This is an example diagram of a bracket vehicle structure according to an embodiment of the present invention, such as... Figure 8 As shown, in this embodiment, the carriage 4 is provided with a loading cavity 41 for accommodating and supporting the bottom of the metal mold, and rollers 42 are symmetrically installed at its lower end. The rollers 42 cooperate with the guide rail 12 on the base assembly 1, allowing the carriage 4 to roll along the guide rail. It should be noted that in practical applications, in order to accommodate metal molds with different outer diameters, various carriages 4 with different heights can be equipped. By replacing the carriage with the corresponding height, the inner side of the flange of the mold with different diameters can be roughly aligned with the clamping position of the clamping assembly 2, thereby achieving compatibility of a single device with multiple mold specifications.

[0032] According to an optional example, in this embodiment, the hydraulic control assembly 5 includes an oil tank 51, a control cabinet 52, a hydraulic pump station 53, and a manual directional valve 54. The hydraulic pump station 53 includes a high-flow variable pump driven by a high-power electric motor. The hydraulic pump station 53 is connected to the oil tank 51 and the manual directional valve 54 via pipelines. The manual directional valve 54 is connected to the clamping cylinder 22 of the clamping assembly 2 and the main cylinder 31 of the ejection assembly 3 via oil circuits. The control cabinet 52 is used to control the start and stop of the electric motor. The manual directional valve 54 has independent control handles for operating the clamping and ejection actions respectively.

[0033] Figure 9 This is another structural example diagram of a variable-diameter metal mold and casting separation device according to an embodiment of the present invention, as shown below. Figures 1 to 9As shown, in this embodiment, the metal mold 6 contains a casting 61. The application principle of a variable diameter metal mold and casting separation device is as follows: First, start the hydraulic pump station 53 and operate the directional valve handle controlling the clamping in the manual directional valve 54 to open the two clamping plates 21. Use a crane to lift the metal mold 6 containing the casting 61 onto the bracket 4 of the corresponding height, and push the bracket 4 into the device along the guide rail 12 until the inner side of the flange of the metal mold 6 is within the stroke range of the clamping plate 21. Operate the handle of the manual directional valve 54 to retract the piston rod of the clamping cylinder 22, driving the two clamping plates 21 to close and firmly grip the inner side of the flange of the metal mold 6. Then, operate the directional valve handle controlling the ejection in the manual directional valve 54 to push the second piston rod 311 of the main cylinder 31 outward at a uniform speed. The second piston rod 311 pushes the pressure head 322, and the pressure head 322 applies force to the casting 61, causing it to smoothly detach from the metal mold 6. After demolding, operate the handle of the manual reversing valve 54 to quickly retract the second piston rod 311 of the main cylinder 31. Then operate the handle of the manual reversing valve 54 again to open the clamping plate 21. Finally, use a crane to lift the separated metal mold 6 and casting 61 separately, and the next work cycle can begin.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A variable diameter metal mold and casting separation device, comprising a base assembly (1), a clamping assembly (2), an ejection assembly (3), and a hydraulic control assembly (5), wherein the clamping assembly (2) comprises a clamping plate (21), a clamping cylinder (22), and a rotating shaft (23), the rotating shaft (23) passing through a rotating shaft hole (211) on the clamping plate (21), the cylinder body (222) of the clamping cylinder (22) being hinged to the base assembly (1), the first piston rod (221) on the clamping cylinder (22) being hinged to the hinge seat (212) on the clamping plate (21), the hydraulic control assembly (5) controlling the clamping cylinder (22) to drive the clamping plate (21) to rotate around the rotating shaft (23) to achieve opening and closing to clamp or release the mold, and the ejection assembly (3) being disposed on the base assembly (1) and controlled by the hydraulic control assembly (5) to achieve ejection and separation of the casting from the mold.

2. The apparatus according to claim 1, characterized in that, The base assembly (1) includes a base (11) and two guide rails (12), which are symmetrically fixedly installed on the upper surface of the base (11).

3. The apparatus according to claim 1, characterized in that, The base assembly (1) includes a mounting base (13), on which brackets (131) are symmetrically arranged on both sides. The mounting base (13) has a first through hole (132) and a plurality of second through holes (133) are arranged around the first through hole (132).

4. The apparatus according to claim 3, characterized in that, The clamping plate (21) is arc-shaped and is rotatably connected to the bracket (131) of the mounting base (13) via a rotating shaft (23).

5. The apparatus according to claim 3, characterized in that, The base assembly (1) also includes a tail frame (14) and four sets of connecting rods (15). The tail frame (14) is located at the side end of the base (11), and the two ends of the four sets of connecting rods (15) are respectively connected and fixed to the mounting base (13) and the tail frame (14).

6. The apparatus according to claim 1, characterized in that, The base assembly (1) also includes a support frame (16), which is fixedly mounted on the side of the base (11).

7. The apparatus according to claim 6, characterized in that, The ejection assembly (3) includes a hydraulic cylinder (31), one end of which is mounted on a support frame (16).

8. The apparatus according to claim 7, characterized in that, The ejection assembly (3) also includes a guide assembly (32), which includes multiple guide rods (321), a pressure head (322), and a support ring (323). The pressure head (322) is connected to one end of the multiple guide rods (321), and the other end of the multiple guide rods (321) is connected to the support ring (323). The guide rods (321) are located in the second through hole (133) of the mounting base (13). The hydraulic cylinder (31) passes through the support ring (323), the tailstock (14), and the first through hole (132) of the mounting base (13) in sequence. The second piston rod (311) of the hydraulic cylinder (31) is fixedly connected to the third through hole (3221) on the pressure head (322).

9. The apparatus according to claim 1, characterized in that, The hydraulic control assembly (5) includes an oil tank (51), a control cabinet (52), a hydraulic pump station (53), and a manual directional valve (54).

10. The apparatus according to claim 1, characterized in that, The variable diameter metal mold and casting separation device also includes a bracket (4), which has a loading cavity (41) and rollers (42) symmetrically installed at the lower end of the bracket (4). The bracket (4) slides with the guide rail (12) through the rollers (42).

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