Integrated forming die for water jacket and sand core of engine
The integrated molding die for engine water jacket sand cores addresses the challenge of demolding by using hydraulic and rotational mechanisms to efficiently separate the sand core from the inner core, improving efficiency and reducing damage.
Patent Information
- Application Number
- CN202421011993.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The challenge of efficiently separating sand cores from engine water jacket molds during demolding due to their special material properties, which leads to difficulty in demolding and potential damage.
An integrated molding die for engine water jacket sand cores, featuring a workbench, fixing frame, lower and upper mold assemblies, hydraulic cylinders, and a top plate mechanism that facilitates controlled separation of the sand core from the inner core through hydraulic and rotational movements.
Improves demolding efficiency and reduces damage to the sand cores by enabling precise and efficient separation of the sand core from the inner core, enhancing the overall demolding process.
Smart Images
Figure CN222268607U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine water jacket casting, in particular to an engine water jacket sand core integrated molding die. Background Art
[0002] The function of the water jacket is to transfer the heat energy from the temperature of the engine combustion chamber and the inner wall of the cylinder body to the coolant through heat conduction. Since the liquid is flowable, it circulates through the water pump to the radiator, and the radiator dissipates the heat of the coolant through the flow of external air. The superheated coolant then circulates to the engine water jacket to receive the heat generated when the engine is working, and the cycle continues.
[0003] The engine water jacket is produced by casting process. Sand core is needed in the casting process. The required sand core can be obtained by injecting coated sand into the molding mold during the processing of sand core. However, due to the special material of sand core, it is not easy to separate the sand core from the inner core of the mold during demolding, so it needs to be improved. Utility Model Content
[0004] The utility model aims to provide an integrated molding die for an engine water jacket sand core, so as to solve the problem that the sand core is not easy to demould proposed in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an engine water jacket sand core integrated forming mold, comprising a workbench, a fixing frame and a lower mold assembly are arranged on the top of the workbench, and an upper mold assembly is arranged on the top of the lower mold assembly;
[0006] The lower mold assembly includes a mold shell fixed on the top of the workbench, a core box is arranged inside the mold shell, an inner core is slidably connected to the inner side of the core box, and an ejection assembly is arranged at the bottom of the inner core;
[0007] The ejection assembly comprises a second hydraulic cylinder arranged at the bottom of the inner core, one end of the second hydraulic cylinder is movably connected with a ejector plate, and the top of the ejector plate and the top of the inner core are located on the same horizontal line.
[0008] Preferably, a third hydraulic cylinder is fixedly connected to the bottom of the workbench, one end of the third hydraulic cylinder is connected to a first push rod, and the top of the first push rod passes through the workbench, the mold shell and the core box and is located on the same horizontal line as the top of the inner core.
[0009] Preferably, a through hole is opened inside the core box, a shell is fixedly connected inside the through hole, and a second hydraulic cylinder is fixedly connected inside the shell.
[0010] Preferably, one end of the second hydraulic cylinder is fixedly connected to a second push rod, and one end of the second push rod is fixedly connected to a motor.
[0011] Preferably, the bottom of the top plate is rotatably connected to the second top rod via a shaft, and one end of the top plate shaft is connected to one end of the motor shaft.
[0012] Preferably, the top plate is rotatably connected to the second top rod.
[0013] Preferably, a first hydraulic cylinder is fixedly connected to the top of the fixing frame, an upper mold assembly is arranged at the bottom of the fixing frame, one end of the first hydraulic cylinder is connected to the top of the upper mold assembly, and a sand shooting port is arranged at the top of the upper mold assembly.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] (1) This device can improve the demoulding efficiency of the sand core and the inner core, and can also reduce the damage to the sand core.
[0016] (2) The device is provided with a second hydraulic cylinder inside the core box of the lower mold assembly. The second hydraulic cylinder can push the top plate, so that the top plate pushes the sand core to separate from the inner core. At the same time, the top plate can be adjusted by rotating the angle. Therefore, the separation of the top plate and the sand core can be accelerated by slightly rotating the top plate, thereby improving the demoulding efficiency of the sand core.
[0017] (3) The device is provided with a third hydraulic cylinder at the bottom of the workbench, through which the inner core can be pushed to separate from the core box, so that the sand core can be pushed out from the core box and the inner core can be replaced conveniently. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of an integrated engine water jacket sand core forming mold of the utility model;
[0019] Figure 2 This is a cross-sectional view of an integrated molding die for an engine water jacket sand core according to the utility model;
[0020] Figure 3 The utility model is a one-piece forming mold for an engine water jacket sand core Figure 2 Enlarged view of point A in the middle.
[0021] In the figure: 1. first hydraulic cylinder; 2. upper mold assembly; 3. lower mold assembly; 31. mold shell; 32. core box; 33. inner core; 4. fixed frame; 5. sand shooting port; 6. workbench; 7. ejector assembly; 71. second hydraulic cylinder; 72. shell; 73. first ejector rod; 74. third hydraulic cylinder; 75. ejector plate; 76. motor; 77. second ejector rod. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] See also Figure 1-3 The utility model provides a technical solution: an engine water jacket sand core integrated molding die, comprising a workbench 6, a fixing frame 4 and a lower mold assembly 3 are arranged on the top of the workbench 6, a first hydraulic cylinder 1 is fixedly connected to the top of the fixing frame 4, an upper mold assembly 2 is arranged at the bottom of the fixing frame 4, one end of the first hydraulic cylinder 1 is connected to the top of the upper mold assembly 2, and a sand shooting port 5 is arranged on the top of the upper mold assembly 2; the upper mold assembly 2 of this structure has the same structure as the lower mold assembly 3 and is also provided with a mold shell 31, a core box 32 and an inner core 33, but the core box 32 and the inner core 33 of the upper mold assembly 2 are integrated; by setting the first hydraulic cylinder The cylinder 1 can push the upper mold assembly 2 to automatically rise and fall, which is convenient for the separation and combination of the upper mold assembly 2 and the lower mold assembly 3; the bottom of the workbench 6 is fixedly connected to the third hydraulic cylinder 74, one end of the third hydraulic cylinder 74 is connected to the first push rod 73, the top of the first push rod 73 passes through the workbench 6, the mold shell 31 and the core box 32 and is located on the same horizontal line as the top of the inner core 33; this structure can push the first push rod 73 by setting the third hydraulic cylinder 74, so that the first push rod 73 pushes the inner core 33 to separate from the mold shell 31, thereby facilitating the subsequent demoulding of the inner sand core of the inner core 33; the top of the lower mold assembly 3 is provided with the upper mold assembly 2;
[0024] The lower mold assembly 3 includes a mold shell 31 fixed on the top of the workbench 6, a core box 32 is arranged inside the mold shell 31, a through hole is opened inside the core box 32, a shell 72 is fixedly connected inside the through hole, and a second hydraulic cylinder 71 is fixedly connected inside the shell 72; this structure facilitates fixing the second hydraulic cylinder 71 to the bottom of the core box 32 by setting the shell 72; one end of the second hydraulic cylinder 71 is fixedly connected to a second push rod 77, and one end of the second push rod 77 is fixedly connected to a motor 76; the bottom of the top plate 75 is rotatably connected to the second push rod 77 through a shaft, and the top plate 75 is connected to the second push rod 77 through a shaft. One end of the plate 75 shaft is connected to one end of the motor 76 shaft; the top plate 75 is rotatably connected to the second push rod 77; this structure can drive the top plate 75 to rotate through the motor 76, so that the top plate 75 can be separated from the sand core inside the inner core 33 by slight rotation of the top plate 75, thereby improving the separation efficiency; this structure can push the second push rod 77 and the top plate 75 through the second hydraulic cylinder 71, so that the top plate 75 can demould the sand core inside the inner core 33; the inner side of the core box 32 is slidably connected to the inner core 33, and the bottom of the inner core 33 is provided with an ejection assembly 7;
[0025] The ejection assembly 7 includes a second hydraulic cylinder 71 disposed at the bottom of the inner core 33 , one end of the second hydraulic cylinder 71 is movably connected to a top plate 75 , and the top of the top plate 75 is located on the same horizontal line as the top of the inner core 33 .
[0026] Working principle: When using the engine water jacket sand core integrated forming mold, if the sand core in the inner core 33 needs to be taken out, the first hydraulic cylinder 1 can be started, so that the first hydraulic cylinder 1 drives the upper mold assembly 2 to move upward, so that the upper mold assembly 2 is separated from the lower mold assembly 3, and then the third hydraulic cylinder 74 is started, so that the third hydraulic cylinder 74 pushes the inner core 33 and the sand core inside the inner core 33 to separate from the core box 32, and then the second hydraulic cylinder 71 is started, so that the second hydraulic cylinder 71 pushes the second push rod 77 and the top plate 75, so that the top plate 75 pushes the sand core and the inner core 33 to slowly separate. During the separation process, if the top plate 75 and the sand core are stuck together, the motor 76 can be started, so that the motor 76 drives the top plate 75 to rotate left and right, and the top plate 75 tilts during the rotation, thereby realizing the separation of the top plate 75 and the sand core. After the sand core and the top plate 75 are separated, the top plate 75 can quickly eject the sand core.
[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An engine water jacket sand core integrated forming mold, comprising a workbench (6), characterized in that: A fixing frame (4) and a lower mold assembly (3) are arranged on the top of the workbench (6); an upper mold assembly (2) is arranged on the top of the lower mold assembly (3); The lower mold assembly (3) comprises a mold shell (31) fixed on the top of the workbench (6), a core box (32) is arranged inside the mold shell (31), an inner core (33) is slidably connected to the inner side of the core box (32), and an ejection assembly (7) is arranged at the bottom of the inner core (33); The ejection assembly (7) comprises a second hydraulic cylinder (71) arranged at the bottom of the inner core (33); one end of the second hydraulic cylinder (71) is movably connected to a top plate (75); the top of the top plate (75) and the top of the inner core (33) are located on the same horizontal line.
2. The engine water jacket sand core integrated forming mold according to claim 1, characterized in that: A third hydraulic cylinder (74) is fixedly connected to the bottom of the workbench (6), one end of the third hydraulic cylinder (74) is connected to a first push rod (73), and the top of the first push rod (73) passes through the workbench (6), the mold shell (31) and the core box (32) and is located on the same horizontal line as the top of the inner core (33).
3. The engine water jacket sand core integrated forming mold according to claim 1, characterized in that: A through hole is provided inside the core box (32), a housing (72) is fixedly connected inside the through hole, and a second hydraulic cylinder (71) is fixedly connected inside the housing (72).
4. The engine water jacket sand core integrated forming mold according to claim 1, characterized in that: One end of the second hydraulic cylinder (71) is fixedly connected to a second push rod (77), and one end of the second push rod (77) is fixedly connected to a motor (76).
5. The engine water jacket sand core integrated forming mold according to claim 1, characterized in that: The bottom of the top plate (75) is rotatably connected to the second top rod (77) via a shaft, and one end of the shaft of the top plate (75) is connected to one end of the shaft of the motor (76).
6. The engine water jacket sand core integrated forming mold according to claim 1, characterized in that: The top plate (75) is rotatably connected to the second top rod (77).
7. The engine water jacket sand core integrated forming mold according to claim 1, characterized in that: The top of the fixed frame (4) is fixedly connected to a first hydraulic cylinder (1), the bottom of the fixed frame (4) is provided with an upper die assembly (2), one end of the first hydraulic cylinder (1) is connected to the top of the upper die assembly (2), and the top of the upper die assembly (2) is provided with a sand shooting port (5).