Casting mold for manufacturing tension test bar

Abstract

The utility model belongs to the technical field of aluminum alloy casting dies, and discloses a casting die for manufacturing a tension test bar, which comprises a first die block and a second die block which are hinged with each other, and a forming cavity is arranged between the first die block and the second die block; the positioning assembly comprises a positioning screw hole and a positioning screw rod which are correspondingly arranged, and after the first module and the second module are assembled, the positioning screw rod is in threaded connection in the positioning screw hole; the locking assembly comprises a first locking rod and a second locking rod which are correspondingly arranged, and a locking block is detachably arranged between the first module and the second module; the cooling assembly includes cooling cavities disposed within the first module and the second module, respectively. The mold is convenient to use, accurate in positioning after mold closing and high in stability, the mold is effectively prevented from cracking and dislocation during pouring, and the forming quality of the tension test rod is improved; and meanwhile, the cooling efficiency of the mold is improved through the arrangement of the cooling assembly, and the forming efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy casting mold technology, and in particular to a casting mold for making tensile test bars. Background Technology

[0002] Tensile test bars are mainly used to test the mechanical properties of aluminum alloy materials under tensile conditions, such as tensile strength and yield strength. Through tensile testing, the quality, reliability and service life of aluminum alloy materials can be evaluated. The production of tensile test bars mainly relies on mold casting.

[0003] Chinese patent application CN202120687279.0 discloses a casting mold for producing tensile test bars, including an upper mold and a lower mold. The upper mold has an upper cavity on its bottom surface, and the lower mold has a lower cavity on its top surface. The upper and lower cavities are closed to form a mold cavity. Two casting channels are symmetrically arranged at both ends of the mold cavity. A heat-conducting sleeve is fitted inside the mold cavity; the heat-conducting sleeve is a split structure. This patent can forcibly change the solidification sequence of the sample to achieve riser feeding. However, the upper and lower molds in this technical solution lack positioning and locking, causing misalignment between the upper and lower molds during casting. This affects the casting accuracy of the tensile test bar and the tensile properties of the aluminum alloy. Furthermore, the low cooling rate of the casting mold affects its continuous use.

[0004] Therefore, this application designs a casting mold for producing tensile test bars to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a casting mold for producing tensile test bars, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a casting mold for preparing tensile test bars, comprising:

[0007] The mold body includes a first module and a second module that are hinged to each other, and a forming cavity for casting tensile test bars is provided between the first module and the second module.

[0008] The positioning component includes a corresponding positioning screw hole and a positioning screw. The positioning screw is rotatably connected to the second module, and the positioning screw hole is opened on the first module. After the first module and the second module are closed, the positioning screw is threaded into the positioning screw hole.

[0009] The locking assembly includes a first locking rod and a second locking rod that are respectively provided. The first locking rod is fixedly connected to the first module, and the second locking rod is fixedly connected to the second module. A locking block is detachably provided between the first module and the second module.

[0010] The cooling assembly includes cooling chambers respectively disposed in the first module and the second module.

[0011] Preferably, the sidewall of the cooling cavity is provided with a plurality of heat-conducting rods with high thermal conductivity, and one end of the heat-conducting rod away from the cooling cavity extends into the molding cavity and is flush with the sidewall of the molding cavity.

[0012] Preferably, a positioning spring in a compressed state is sleeved on the positioning screw, one end of the positioning spring abuts against the surface of the second module, and the other end of the positioning spring abuts against the nut of the positioning screw.

[0013] Preferably, the first locking rod has an annular first clearance groove, the second locking rod has a second clearance groove corresponding to the first clearance groove, the locking block is rotatably connected in the first clearance groove, and the notch of the locking block is locked in the second clearance groove.

[0014] Preferably, a locking groove is provided at the bottom end of the notch, and a locking spring in a compressed state is provided in the locking groove. The locking spring is fixedly connected to a locking block slidably connected in the locking groove. The locking block extends out of the locking groove and inserts into a slot on the upper wall of the notch, and the locking block engages the second locking rod in the notch.

[0015] Preferably, the side wall of the locking groove is provided with a guide groove, and a pressing plate is slidably connected in the guide groove. One end of the pressing plate extends into the locking groove and is fixedly connected to the bottom end of the locking block, and the other end of the pressing plate extends out of the guide groove.

[0016] Preferably, the locking block is threaded with a locking screw, which extends into the locking groove and abuts against the side wall of the locking block.

[0017] Preferably, the side wall of the first module is provided with a cooling water inlet pipe and a cooling water outlet pipe, and the cooling water inlet pipe and the cooling water outlet pipe are respectively connected to both ends of the cooling cavity.

[0018] Compared with the prior art, this utility model has the following advantages and technical effects: This utility model discloses a casting mold for producing tensile test bars. The first and second modules, which are hinged to each other, are easy to open, close, and position. The forming cavity for casting the tensile test bar is set between the first and second modules, which facilitates casting. The positioning screw hole and positioning screw of the positioning component are respectively set between the first and second modules. When the first and second modules are closed, the bottom end of the positioning screw is threaded into the positioning screw hole, making the positioning of the forming cavity accurate and tight. The locking block of the locking component is set between the first locking rod and the second locking rod. When the mold is closed, the first and second modules are locked together to withstand the tension generated during aluminum alloy casting, preventing the first and second modules from separating or misaligning during casting, thus improving the forming quality of the tensile test bar in the forming cavity. The cooling cavity of the cooling component is spirally set inside the first and second modules. When the tensile test bar is cast, the cooling water circulates in the cooling cavity, accelerating the cooling of the mold body and speeding up the forming efficiency of the tensile test bar.

[0019] This invention is easy to use, provides precise positioning after mold closing, and has high stability. It effectively prevents mold cracking and misalignment during casting, thus improving the molding quality of the tensile test bar. At the same time, the cooling component improves the cooling efficiency of the mold and increases the molding efficiency. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram showing the mold opening state of the casting mold for preparing the tensile test bar of this utility model.

[0022] Figure 2 This is a schematic diagram showing the mold closing state of the casting mold for preparing the tensile test bar of this utility model.

[0023] Figure 3 This is a top view of the cooling cavity of this utility model.

[0024] Figure 4 This is a side view of the cooling cavity structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the locking block structure of this utility model;

[0026] In the diagram: 1. Mold body; 2. Positioning component; 3. Locking component; 4. Cooling component; 11. First module; 12. Second module; 13. Molding cavity; 14. Sprue; 15. Riser; 16. First connecting runner; 17. Second connecting runner; 18. Slag-avoiding blind path; 21. Positioning screw hole; 22. Positioning screw; 23. Positioning spring; 31. First locking rod; 32. First locking rod; 33. Locking block; 34. First clearance groove; 35. Second clearance groove; 36. Notch; 37. Locking groove; 38. Locking spring; 39. Locking block; 310. Slot; 311. Guide groove; 312. Pressing plate; 313. Locking screw; 41. Cooling cavity; 42. Heat-conducting rod; 43. Cooling water inlet pipe; 44. Cooling water outlet pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figures 1-5 As shown, this embodiment provides a casting mold for preparing tensile test bars, comprising:

[0030] The mold body 1 includes a first module 11 and a second module 12 that are hinged to each other, and a forming cavity 13 for casting tensile test bars is provided between the first module 11 and the second module 12.

[0031] The positioning component 2 includes a corresponding positioning screw hole 21 and a positioning screw 22. The positioning screw 22 is rotatably connected to the second module 12, and the positioning screw hole 21 is opened on the first module 11. After the first module 11 and the second module 12 are closed, the positioning screw 22 is threaded into the positioning screw hole 21.

[0032] The locking assembly 3 includes a first locking rod 31 and a second locking rod, which are respectively provided. The first locking rod 31 is fixed to the first module 11, and the second locking rod is fixed to the second module 12. A locking block 33 is detachably provided between the first module 11 and the second module 12.

[0033] The cooling assembly 4 includes cooling chambers 41 respectively disposed in the first module 11 and the second module 12.

[0034] This utility model discloses a casting mold for producing tensile test bars. The first module 11 and the second module 12, hinged together, facilitate opening, closing, and positioning. The forming cavity 13 for casting the tensile test bar is located between the first module 11 and the second module 12, facilitating casting. The positioning screw hole 21 and the positioning screw 22 of the positioning component 2 are respectively located between the first module 11 and the second module 12. When the first module 11 and the second module are closed, the bottom end of the positioning screw 22 is threaded into the positioning screw hole 21, ensuring precise and tight positioning of the forming cavity 13. The locking block 3 of the locking component 3... 3. The locking mechanism is positioned between the first locking rod 31 and the second locking rod. After mold closing, it locks the first module 11 and the second module 12 together, bearing the tension generated during aluminum alloy casting and preventing separation or misalignment of the first module 11 and the second module 12 during casting. This facilitates improved molding quality of the tensile test rod within the molding cavity 13. The cooling chamber 41 of the cooling component 4 is spirally positioned within the first module 11 and the second module 12. During tensile test rod casting, cooling water circulates within the cooling chamber 41, accelerating the cooling of the mold body 1 and increasing the molding efficiency of the tensile test rod. This invention is convenient to use, provides precise positioning after mold closing, and exhibits high stability. It effectively prevents mold breakage and misalignment during casting, improving the molding quality of the tensile test rod. Simultaneously, the cooling component 4 enhances the cooling efficiency of the mold and improves molding efficiency.

[0035] In one embodiment of this application, the molding cavity 13 includes a pouring port 14 and a riser 15 that penetrate the side walls of the first module 11 and the second module 12. During casting, liquid aluminum alloy is poured in from the pouring port 14 until liquid aluminum alloy emerges from the riser 15, indicating that the molding cavity 13 is filled.

[0036] In one embodiment of this application, the molding cavity 13 can mold multiple tensile test bars at one time, and the molding spaces of adjacent tensile test bars are connected by a first connecting gating 16 and a second connecting gating 17, respectively, to facilitate one-time molding.

[0037] In one embodiment of this application, a plurality of slag-avoiding blind channels 18 are connected between the second connecting gating channels 17 at the bottom, which can store the residue in the aluminum alloy during the casting process and prevent the residue from accumulating in the tensile test bar.

[0038] To further optimize the design, several high-thermal-conductivity heat-conducting rods 42 are provided on the sidewall of the cooling cavity 41. One end of the heat-conducting rod 42, away from the cooling cavity 41, extends into the molding cavity 13 and is flush with the sidewall of the molding cavity 13. The heat-conducting rod 42 is made of a high-thermal-conductivity material. When the molten aluminum alloy is poured into the molding cavity 13, it accelerates the heat conduction of the aluminum alloy, allowing the heat to be transferred into the cooling cavity 41 and carried away by the flowing cooling water, thus accelerating the cooling efficiency.

[0039] To further optimize the design, a positioning spring 23 in a compressed state is fitted onto the positioning screw 22. One end of the positioning spring 23 abuts against the surface of the second module 12, and the other end abuts against the nut of the positioning screw 22. After mold closing, the positioning screw 22 is pressed down so that its end contacts the positioning screw hole 21, and then the positioning screw 22 is tightened into the positioning screw hole 21 to lock the first module 11 and the second module 12. When the mold is opened, the positioning screw 22 is unscrewed from the positioning screw hole 21, and the positioning spring 23 rebounds to position the positioning screw 22 on the first module 11, thus avoiding interference with mold opening and closing.

[0040] In a further optimized design, the first locking rod 31 has an annular first clearance groove 34, and the second locking rod has a second clearance groove 35 corresponding to the first clearance groove 34. The locking block 33 is rotatably connected within the first clearance groove 34, and the notch 36 of the locking block 33 is engaged within the second clearance groove 35. The first clearance groove 34 and the second clearance groove 35 are annular, and the locking block 33 is rotatably connected within the first clearance groove 34, while the notch 36 of the locking block 33 can be detachably engaged with the second locking rod. After mold closing, the locking block 33 is rotated so that the notch 36 engages with the second clearance groove 35, locking the first module 11 and the second module 12. When the mold opens, the locking block 33 is rotated in the opposite direction so that the notch 36 separates from the second locking rod.

[0041] In a further optimized design, a locking groove 37 is provided at the bottom of the notch 36. A locking spring 38 in a compressed state is installed in the locking groove 37. The locking spring 38 is fixedly connected to a locking block 39 slidably connected in the locking groove 37. The locking block 39 extends out of the locking groove 37 and inserts into the slot 310 on the upper wall of the notch 36, locking the second locking rod in the notch 36. The locking block 39 slides and extends within the locking groove 37 under the action of the locking spring 38. When no force is applied, the top of the locking block 39 extends out of the locking groove 37 and engages in the slot 310 under the push of the locking spring 38, thus locking the second locking rod in the notch 36. When mold opening is required, the locking block 39 is pressed down to retract into the locking groove 37, allowing the notch 36 to separate from the second locking rod.

[0042] In a further optimized design, a guide groove 311 is provided on the side wall of the locking groove 37. A pressing plate 312 is slidably connected within the guide groove 311. One end of the pressing plate 312 extends into the locking groove 37 and is fixedly connected to the bottom end of the locking block 39, while the other end extends out of the guide groove 311. Pressing the pressing plate 312 facilitates the downward pressing of the locking block 39, causing it to retract into the locking groove 37 and separating the notch 36 from the second locking rod.

[0043] In a further optimized design, a locking screw 313 is threaded onto the locking block 33. The locking screw 313 extends into the locking groove 37 and abuts against the side wall of the locking block 39. After the locking screw 313 is tightened, it abuts against the side wall of the locking block 39, thereby locking the locking block 39 and the locking groove 37 and preventing accidental contact that could lead to separation or misalignment between the first module 11 and the second module 12.

[0044] To further optimize the design, the side wall of the first module 11 is equipped with a cooling water inlet pipe 43 and a cooling water outlet pipe 44, which are respectively connected to both ends of the cooling chamber 41. The cooling water inlet pipe 43 and the cooling water outlet pipe 44 are respectively connected to both ends of the cooling chamber 41, which facilitates the circulation of cooling water and accelerates cooling.

[0045] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0046] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A casting mold for preparing tensile test bars, characterized in that, include: The mold body (1) includes a first module (11) and a second module (12) that are hinged to each other, and a forming cavity (13) for casting tensile test bars is provided between the first module (11) and the second module (12); The positioning component (2) includes a corresponding positioning screw hole (21) and a positioning screw (22). The positioning screw (22) is rotatably connected to the second module (12). The positioning screw hole (21) is opened on the first module (11). After the first module (11) and the second module (12) are molded together, the positioning screw (22) is threaded into the positioning screw hole (21). The locking assembly (3) includes a first locking rod (31) and a second locking rod respectively. The first locking rod (31) is fixed to the first module (11), and the second locking rod is fixed to the second module (12). A locking block (33) is detachably provided between the first module (11) and the second module (12). The cooling assembly (4) includes cooling chambers (41) respectively disposed in the first module (11) and the second module (12).

2. The casting mold for preparing tensile test bars according to claim 1, characterized in that: The sidewall of the cooling cavity (41) is provided with a number of heat-conducting rods (42) with high thermal conductivity. One end of the heat-conducting rod (42) away from the cooling cavity (41) extends into the molding cavity (13) and is flush with the sidewall of the molding cavity (13).

3. The casting mold for preparing tensile test bars according to claim 1, characterized in that: A positioning spring (23) in a compressed state is fitted on the positioning screw (22). One end of the positioning spring (23) abuts against the surface of the second module (12), and the other end of the positioning spring (23) abuts against the nut of the positioning screw (22).

4. The casting mold for preparing tensile test bars according to claim 1, characterized in that: The first locking rod (31) has an annular first clearance groove (34), and the second locking rod has a second clearance groove (35) corresponding to the first clearance groove (34). The locking block (33) is rotatably connected in the first clearance groove (34), and the notch (36) of the locking block (33) is locked in the second clearance groove (35).

5. The casting mold for preparing tensile test bars according to claim 4, characterized in that: The bottom end of the notch (36) is provided with a locking groove (37), and a locking spring (38) in a compressed state is provided in the locking groove (37). The locking spring (38) is fixedly connected to a locking block (39) slidably connected in the locking groove (37). The locking block (39) extends out of the locking groove (37) and inserts into the slot (310) on the upper wall of the notch (36). The locking block (39) engages the second locking rod in the notch (36).

6. The casting mold for preparing tensile test bars according to claim 5, characterized in that: The side wall of the locking groove (37) is provided with a guide groove (311), and a pressing plate (312) is slidably connected in the guide groove (311). One end of the pressing plate (312) extends into the locking groove (37) and is fixedly connected to the bottom end of the locking block (39). The other end of the pressing plate (312) extends out of the guide groove (311).

7. The casting mold for preparing tensile test bars according to claim 5, characterized in that: The locking block (33) is threaded with a locking screw (313), which extends into the locking groove (37) and abuts against the side wall of the locking block (39).

8. The casting mold for preparing tensile test bars according to claim 3, characterized in that: The side wall of the first module (11) is provided with a cooling water inlet pipe (43) and a cooling water outlet pipe (44), which are respectively connected to the two ends of the cooling cavity (41).

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