A multi-size metal pipe bending casting device

Abstract

The present application discloses a multi-size metal bend pipe casting device, comprising: an outer mold, a mold core and a mold core transmission mechanism; the mold core has two ends that are vertically bent in the middle; the mold core is spliced ​​together by a number of modules; with one end face of the mold core as the base, an infinitely high cylindrical space is constructed, and the cylindrical space can accommodate any one of the modules; the mold core transmission mechanism is used to drive the module to move; the mold core is spliced ​​together by a number of modules, and after molding is completed, each module can be taken out of the workpiece, and the movement of the module is driven by the transmission mechanism, so that demolding can be performed by a motor or other power elements, and the mold core after demolding can be reused.

Description

Technical Field

[0001] The present application relates to a casting device, and in particular to a casting device for metal elbows of multiple sizes. Background Art

[0002] When casting a metal elbow, both an outer mold and an inner mold are required. The inner mold forms the inner wall of the metal elbow, while the outer mold forms the outer wall. In practice, both the inner and outer molds are sand molds, or at least the inner mold is a sand mold. This approach has the advantage of easy demolding: after molding is complete, the inner mold can be removed from the workpiece by tapping it. However, this approach has the disadvantage that sand molds are single-use and cannot be reused, and the entire process requires manual intervention, which is relatively cumbersome. Summary of the Invention

[0003] In response to the problems existing in the prior art, the present application provides a multi-size metal elbow casting device.

[0004] A multi-size metal elbow casting device comprises: an outer mold, a mold core and a mold core transmission mechanism;

[0005] The two ends of the mold core are vertical and the middle part is bent;

[0006] The mold core is composed of several modules;

[0007] With one end face of the mold core as the base, a cylindrical space of infinite height is constructed, and the cylindrical space can accommodate any one of the modules;

[0008] The core transmission mechanism is used to drive the module to move.

[0009] Furthermore, the mold core includes: module A, module B and module C, and the mold core is spliced ​​together by module A, module B and two modules C; the overall shape of the mold core is a circular tube with a bend in the middle and vertical ends; taking one end face of the mold core as the starting point, the end face is stretched along its axial straight line to form a cylindrical area A, and the part of the mold core located in the cylindrical area A is module A; after the module A part is removed from the mold core, the other end face of the mold core is taken as the starting point, the end face is stretched along its axial straight line to form a cylindrical area B, and the part located in the cylindrical area B is module B; the remaining part after removing module A and module B is cut into equal parts, and the two identical and symmetrical parts obtained are two modules C.

[0010] Furthermore, two core transmission mechanisms are provided at both ends of the core, respectively, and the two core transmission mechanisms drive module A and module B to move respectively, and each core transmission mechanism drives a module C to move.

[0011] Furthermore, the core transmission mechanism includes a pull rod A, a pull rod B, a slider A, a slider B, a slider C and a screw rod. The screw rod is connected to the nut installed in the slider A, the slider A is fixedly connected to the module A or the module B, the slider B is fixedly connected to the pull rod A, and the slider C is fixedly connected to the pull rod B.

[0012] Furthermore, it also includes: a base, the screw rod is installed on the base, and a support positioning rod is fixedly installed on the base, and the support positioning rod passes through slider A, slider B and slider C.

[0013] Furthermore, pull rod A is extended from both ends of the pull rod B, and a crank A is rotatably connected to the pull rod A, and a crank B is rotatably connected to the pull rod B. Crank A and crank B are arranged crosswise, and the other ends of crank A and crank B are rotatably connected to module C, and a guide rail is provided inside crank A, and a pulley that can be tangent to the guide rail is installed on crank B, and the pulley is located inside the guide rail.

[0014] Furthermore, the slider A is equipped with a buckle A, which can be snapped onto the slider B. Similarly, the slider B is also equipped with a buckle B, which can be snapped onto the slider C.

[0015] Furthermore, a bracket is installed on the base, and a limiting device is installed on the bracket to stop slider B and slider C at a specified position when slider A drives slider B and slider C to move to the left.

[0016] Furthermore, the limiting device includes a baffle A, a spring clip A, a baffle B and a spring clip B, wherein the spring clip A is fixedly mounted on the baffle A, the spring clip B is fixedly mounted on the baffle B, a gap is left on the baffle A through which the pull rod A can pass, while the slider B cannot pass through the gap; a gap is left on the baffle B through which the slider B can pass, while the slider C cannot pass through the gap.

[0017] Furthermore, a detachable cavity is installed in the outer mold, a gate is provided on the outer mold, the gate passes through the cavity, a cooling channel is provided inside the outer mold, and a runner port is also installed on the outer mold.

[0018] The technical effects and advantages of this application are:

[0019] In this application, the mold core is composed of several modules. After the molding is completed, each module can be taken out from the workpiece, and the movement of the module is driven by a transmission mechanism. In this way, the mold can be demolded by a motor or other power elements, and the mold core after demolding can be reused.

[0020] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a multi-size metal pipe bending casting device is shown;

[0022] Figure 2 A schematic structural diagram of a mold core transmission mechanism in a multi-size metal elbow casting device is shown;

[0023] Figure 3 A schematic structural diagram of a mold core in a multi-size metal elbow casting device is shown;

[0024] Figure 4 A schematic structural diagram of a limit device in a multi-size metal pipe bending casting device is shown;

[0025] Figure 5 A schematic diagram of the transmission structure of module C in a multi-size metal pipe bending casting device is shown;

[0026] Figure 6 A schematic diagram of the structure of a mold cavity in a multi-size metal elbow casting device is shown;

[0027] In the figure: 1-outer mold, 2-mold core, 3-pull rod A, 4-pull rod B, 5-base, 6-bracket, 7-baffle A, 8-spring A, 9-baffle B, 10-spring B, 11-slider A, 12-slider B, 13-slider C, 14-clip A, 15-clip B, 16-support positioning rod, 17-screw, 18-gate, 19-cavity, 20-runner outlet, 21-module A, 22-module B, 23-module C, 24-crank A, 25-crank B, 26-pulley, 27-guide rail. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] In addition, in the application, the terms "first", "second" and other similar words are not intended to imply any order, quantity and importance, but are merely used to distinguish different elements. The terms "upper", "lower", "left", "right" and other similar words are merely positional relationships in the drawings.

[0030] When casting a curved round tube, the mold core used must also have a curved portion. Therefore, the main difficulty faced in casting a curved round tube is how to remove the curved mold core from the round tube after casting. In this application, the mold core is divided into several parts according to the inner diameter of the round tube, so as to facilitate the removal of the mold core from the round tube.

[0031] like Figure 1 As shown, the embodiment of the present application provides a multi-size metal elbow casting device, comprising: an outer mold 1, a mold core 2 and a mold core transmission mechanism;

[0032] like Figure 3 and Figure 4 As shown, the mold core 2 includes: module A21, module B22 and module C23. The mold core 2 is spliced ​​by module A21, module B22 and two modules C23; the overall shape of the mold core 2 is a circular tube with a curved middle and vertical ends. Starting from one end face of the core 2, this end face is stretched along its axial direction to form a cylindrical region A. The portion of the core 2 located within cylindrical region A is module A21. This segmentation method allows module A21 to be easily removed from the finished workpiece by translation after casting. Similarly, after removing module A21, starting from the other end face of the core 2, this end face is stretched along its axial direction to form a cylindrical region B. The portion located within cylindrical region B is module B22. Similarly, this segmentation method allows module B22 to be easily removed from the finished workpiece by translation after casting. The remaining portion after removing modules A21 and B22 is then divided equally into two identical and symmetrical sections, forming modules C23. This segmentation method ensures that modules A21, B22, and both modules C23 can be mechanically removed from the finished elbow.

[0033] like Figure 1As shown, two core transmission mechanisms are respectively provided at both ends of the core 2, and the two core transmission mechanisms respectively drive module A21 and module B22 to move, and each core transmission mechanism drives a module C23 to move, and the core transmission mechanism includes a pull rod A3, a pull rod B4, a slider A11, a slider B12, a slider C13 and a screw rod 17, and the screw rod 17 is connected with the nut installed in the slider A11, and the slider A11 is fixedly connected to the module A21 or the module B22, and the slider B12 is fixedly connected to the pull rod A3, and the slider C13 is fixedly connected to the pull rod B4. In this way, the slider A11 can be driven to move by the cooperation of the screw rod 17 and the nut, and the slider B12 and the slider C13 can be pushed to move by the slider A11.

[0034] like Figure 1 and Figure 2 As shown, in one embodiment of the present application, a multi-size metal pipe bending casting device also includes: a base 5, the screw rod 17 is installed on the base 5, and a support positioning rod 16 is fixedly installed on the base 5, and the support positioning rod 16 passes through the slider A11, the slider B12 and the slider C13, that is, the slider A11, the slider B12 and the slider C13 are all supported and positioned by the support positioning rod 16.

[0035] It should be noted that in this application, a pull rod A3 is inserted into module A21 and module B22, and a pull rod B4 is also inserted into pull rod A3. The pull rod A3 and pull rod B4 drive module C23 to flip and translate, thereby performing demolding.

[0036] like Figure 5 As shown, both ends of the pull rod B4 extend out of the pull rod A3, and a crank A24 is rotatably connected to the pull rod A3, and a crank B25 is rotatably connected to the pull rod B4. The crank A24 and the crank B25 are arranged crosswise, and the other ends of the crank A24 and the crank B25 are rotatably connected to the module C23, and a guide rail 27 is provided in the crank A24, and a pulley 26 that can be tangent to the guide rail 27 is installed on the crank B25. The pulley 26 is located in the guide rail 27. In this way, when the pull rod A3 moves, it can drive the module C23 to flip over, and when the pull rod A3 and the pull rod B4 move at the same time, it can drive the module C23 to translate.

[0037] like Figure 2As shown, a buckle A14 is installed on the slider A11, and the buckle A14 can be snapped onto the slider B12. Similarly, a buckle B15 is installed on the slider B12, and the buckle B15 can be snapped onto the slider C13. In this way, when the slider A11 moves to the right, the buckle A14 snaps onto the slider B12, and the buckle B15 snaps onto the slider C13, and the slider A11 can push the sliders B12 and C13 to move to the right. At the same time, because the buckle A14 snaps onto the slider B12, and the buckle B15 snaps onto the slider C13, when the slider A11 moves to the left, it can also drive the sliders B12 and C13 to move to the left. Since the sliders A11, B12, and C13 are located at different positions during the casting process, as shown in FIG. Figure 1 As shown, a bracket 6 is also installed on the base 5, and a limiting device is installed on the bracket 6 to stop the slider B12 and the slider C13 at a specified position when the slider A11 drives the slider B12 and the slider C13 to move to the left.

[0038] like Figure 4 As shown, in one embodiment of the present application, the limiting device includes a baffle A7, a spring clip A8, a baffle B9, and a spring clip B10. Spring clip A8 is fixedly mounted on baffle A7, and spring clip B10 is fixedly mounted on baffle B9. Baffle A7 has a hole through which pull rod A3 passes, but slider B12 cannot pass through the hole. Similarly, baffle B9 has a hole through which slider B12 passes, but slider C13 cannot pass through the hole. Spring clip A8 is used to secure slider B12 after it reaches a specified position, and slider C13 is used to secure slider C13 after it reaches a specified position.

[0039] In addition, if Figure 6 As shown, in one embodiment of the present application, a detachable cavity 19 is installed in the outer mold 1, a gate 18 is provided on the outer mold 1, the gate 18 passes through the cavity 19, a cooling channel is provided inside the outer mold 1, and a runner port 20 is also installed on the outer mold 1.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A multi-size metal elbow casting device, characterized in that: include: An outer mold (1), a mold core (2), and a mold core transmission mechanism; The mold core (2) has two vertical ends and a bent middle portion; The mold core (2) is formed by splicing a number of modules; With one end face of the mold core (2) as the base, a cylindrical space of infinite height is constructed, and the cylindrical space can accommodate any one of the modules; The core transmission mechanism is used to drive the module to move; Module A (21), module B (22) and module C (23), the core (2) is formed by splicing module A (21), module B (22) and two modules C (23); the overall shape of the core (2) is a circular tube with a curved middle and vertical ends; with one end face of the core (2) as the starting point, the end face is stretched along its axial straight line to form a cylindrical area A, and the part of the core (2) located in the cylindrical area A is the module A (21); after the module A (21) part is removed from the core (2), the other end face of the core (2) is taken as the starting point, the end face is stretched along its axial straight line to form a cylindrical area B, and the part located in the cylindrical area B is the module B (22); the remaining part after removing the modules A (21) and B (22) is cut into equal parts, and the two identical and symmetrical parts obtained are the two modules C (23); Two core transmission mechanisms are respectively provided at both ends of the core (2), and the two core transmission mechanisms respectively drive module A (21) and module B (22) to move, and each core transmission mechanism drives a module C (23) to move; The core transmission mechanism includes a pull rod A (3), a pull rod B (4), a slider A (11), a slider B (12), a slider C (13) and a screw rod (17), wherein the screw rod (17) is connected to a nut installed in the slider A (11), the slider A (11) is fixedly connected to the module A (21) or the module B (22), the slider B (12) is fixedly connected to the pull rod A (3), and the slider C (13) is fixedly connected to the pull rod B (4); It also includes: a base (5), the screw rod (17) is mounted on the base (5), and a support positioning rod (16) is fixedly mounted on the base (5), and the support positioning rod (16) passes through the slider A (11), the slider B (12) and the slider C (13); Both ends of the pull rod B (4) extend out of the pull rod A (3), the pull rod A (3) is rotatably connected to a crank A (24), and the pull rod B (4) is rotatably connected to a crank B (25), the crank A (24) and the crank B (25) are arranged crosswise, and the other ends of the crank A (24) and the crank B (25) are rotatably connected to the module C (23), and a guide rail (27) is provided in the crank A (24), and a pulley (26) that can be tangent to the guide rail (27) is installed on the crank B (25), and the pulley (26) is located in the guide rail (27).

2. A multi-size metal elbow casting device according to claim 1, characterized in that: The slider A (11) is provided with a buckle A (14), which can be buckled onto the slider B (12). Similarly, the slider B (12) is provided with a buckle B (15), which can be buckled onto the slider C (13).

3. The multi-size metal elbow casting device according to claim 2, characterized in that: A bracket (6) is mounted on the base (5), and a limiting device is mounted on the bracket (6) for stopping the slider B (12) and the slider C (13) at a designated position when the slider A (11) drives the slider B (12) and the slider C (13) to move to the left.

4. A multi-size metal elbow casting device according to claim 3, characterized in that: The limiting device includes a baffle A (7), a spring piece A (8), a baffle B (9) and a spring piece B (10), wherein the spring piece A (8) is fixedly mounted on the baffle A (7), and the spring piece B (10) is fixedly mounted on the baffle B (9). A hole is left on the baffle A (7) through which the pull rod A (3) can pass, while the slider B (12) cannot pass through the hole; a hole is left on the baffle B (9) through which the slider B (12) can pass, while the slider C (13) cannot pass through the hole.

5. The multi-size metal elbow casting device according to claim 1, characterized in that: A detachable cavity (19) is installed in the outer mold (1), a gate (18) is provided on the outer mold (1), the gate (18) passes through the cavity (19), a cooling flow channel is provided inside the outer mold (1), and a flow channel port (20) is also installed on the outer mold (1).

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