Micro-vibration exhaust device of precision alloy thin-wall part casting mold

Abstract

The utility model discloses a micro-vibration exhaust device for a casting mold of a precise alloy thin-wall part, which comprises a main mold cavity arranged on a lower mold and provided with a plurality of auxiliary mold cavities, a sprue gate positioned at the ports of the auxiliary mold cavities is arranged in the main mold cavity, an air passage for extruding and exhausting air is arranged between two adjacent auxiliary mold cavities, and a ladder-shaped opening is arranged at the port of the air passage. According to the micro-vibration exhaust device of the precision alloy thin-wall part casting mold, air in the auxiliary mold cavity is squeezed into the air channel by stock solution to be used for unlocking the blocking piece, so that the ladder-shaped column rapidly moves downwards to block the ladder-shaped opening, the stock solution is isolated by the ladder-shaped column when reaching the end opening of the ladder-shaped opening, and the sealing effect is improved. The air exhausting function in the auxiliary die cavity is guaranteed, meanwhile, no pouring gate or few pouring gates are generated after the alloy thin-wall part protrusion is formed, the workload of follow-up remachining of the alloy thin-wall part protrusion is reduced, and the overall finished product rate of the alloy thin-wall part is increased.

Description

Technical Field

[0001] This utility model relates to the field of alloy casting mold technology, and more specifically to a micro-vibration exhaust device for precision alloy thin-walled casting molds. Background Technology

[0002] When casting precision alloy thin-walled parts, high-temperature alloy liquid is injected through the sprue on the mold and cooled in the mold to obtain a suitable shape. After the mold is closed, during the process of injecting the liquid, the air in the forming chamber must be squeezed out to avoid the formation of air bubbles that would affect the forming.

[0003] According to the public announcement number: CN222370304U, the public announcement date: 2025-01-21, an aluminum alloy casting mold with vent holes includes multiple vent grooves and vent holes connected together on the upper mold and the lower mold.

[0004] In the prior art, including the aforementioned patents, some thin-walled alloy parts have special casting protrusions. Traditional gating gates are generally located in the middle of the thin-walled alloy parts. Therefore, when the flow of the high-temperature liquid is nearing its end, it is impossible to guarantee that residual air will not affect the molding of the protrusions. To solve this problem, the gating gate is usually set at the protrusion, so that the liquid first forms at the protrusion of the thin-walled alloy part. However, for thin-walled alloy parts with many protrusions and small size, the injection rate of the adjusted gating gate will be reduced. Subsequently, the gating gate on the protrusion needs to be ground and repaired, which increases the workload and difficulty of reprocessing the protrusion. At the same time, it will also damage the protrusion and affect the overall yield of the thin-walled alloy parts. Utility Model Content

[0005] The purpose of this invention is to provide a micro-vibration venting device for casting molds of precision alloy thin-walled parts, aiming to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A micro-vibration venting device for casting molds of precision alloy thin-walled parts includes a lower mold and an upper mold, and a main mold cavity opened on the lower mold and having multiple sub-mold cavities, and a pouring port located at the port of the sub-mold cavity is opened in the main mold cavity;

[0008] An air passage for expelling air is provided between two adjacent sub-mold cavities, and the air passage port is provided with a trapezoidal opening;

[0009] The upper mold is provided with a driving component that is driven to flip by the air passage pressure, and the flipped driving component unlocks the sealing component provided in the upper mold, so that the trapezoidal column provided on the sealing component moves vertically downward to fill the trapezoidal opening.

[0010] Preferably, the trapezoidal opening is further provided with an oblique opening, and the end of the trapezoidal column is provided with an oblique block that is obliquely slidably assembled with the oblique opening.

[0011] Preferably, the sealing member has a groove that slides with the upper mold.

[0012] Preferably, the sealing member is further provided with an elastic element that cooperates with the sliding groove.

[0013] Preferably, a plug is movably mounted on the drive member, which moves in a piston-like motion with the air passage.

[0014] Preferably, the sealing member is provided with a contact block, and the driving member is further provided with a locking member for locking the contact block.

[0015] Preferably, the sealing member is further provided with a rounded corner block arranged opposite to the contact block, and the rounded corner block slides with the locking member to lock the sealing member.

[0016] Preferably, it also includes a guide rod that moves in the airway and pushes the sealing element to reset.

[0017] Preferably, the elastic element is arc-shaped.

[0018] Preferably, the elastic element is an elastic metal sheet.

[0019] In the above technical solution, the micro-vibration exhaust device for precision alloy thin-walled part casting mold provided by this utility model has the following beneficial effects: the air in the secondary mold cavity is squeezed into the air channel by the original liquid to unlock the sealing part, so that the trapezoidal column moves down quickly and seals the trapezoidal opening, so that the original liquid is isolated by the trapezoidal column when it reaches the trapezoidal opening, ensuring the air exhaust function in the secondary mold cavity. At the same time, it also makes the alloy thin-walled part protruding after molding without gate or with very few gates, reducing the workload of subsequent reprocessing of the alloy thin-walled part protrusion, reducing damage problems, and improving the overall yield of alloy thin-walled parts. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the assembly of the lower mold and the upper mold provided in an embodiment of the present utility model;

[0022] Figure 2 A schematic diagram showing the position of the lower mold's top surface portion in an embodiment of this utility model;

[0023] Figure 3This is a side sectional view of the assembly of the lower mold and the upper mold provided in an embodiment of the present utility model;

[0024] Figure 4 for Figure 3 Enlarged view of point A;

[0025] Figure 5 This utility model provides a side cross-sectional view of the lower mold portion and an assembly diagram of the sealing and driving components.

[0026] Figure 6 This is a top-view schematic diagram of the sealing component provided in an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Lower mold; 10. Sprue; 11. Main mold cavity; 12. Secondary mold cavity; 2. Upper mold; 3. Air passage; 31. Trapezoidal opening; 32. Angled opening; 4. Driving component; 41. Plug; 42. Locking component; 5. Sealing component; 50. Slide groove; 51. Elastic component; 52. Trapezoidal column; 53. Angled block; 54. Contact block; 55. Rounded corner block; 6. Guide rod. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-6 As shown, a micro-vibration venting device for a precision alloy thin-walled casting mold includes a lower mold 1 and an upper mold 2, and a main mold cavity 11 opened on the lower mold 1 and having multiple sub-mold cavities 12, and a pouring port 10 located at the port of the sub-mold cavity 12 is opened in the main mold cavity 11.

[0031] An air passage 3 for expelling air is provided between two adjacent sub-mold cavities 12, and a trapezoidal opening 31 is provided at the port of the air passage 3;

[0032] The upper mold 2 is provided with a driving component 4 that is flipped by the pressure of the air passage 3, and the flipped driving component 4 unlocks the sealing component 5 provided in the upper mold 2, so that the trapezoidal column 52 provided on the sealing component 5 moves vertically downward to fill the trapezoidal opening 31.

[0033] Specifically, the opening and closing method of the lower mold 1 and the upper mold 2 is existing technology and will not be described in detail here. The lower end face of the upper mold 2 has an exhaust hole in the middle of the core to discharge the air in the main mold cavity 11, while the air in the secondary mold cavity 12 enters the air passage 3 for transportation.

[0034] Furthermore, when the raw liquid enters the secondary mold cavity 12 and reaches the trapezoidal port 31, the pressure provided by the air entering the air passage 3 from the secondary mold cavity 12 is less than or equal to the power required for the drive component 4 to rotate and unlock (the less than part is replenished when the raw liquid enters the trapezoidal port 31 (the total pressure used for driving in the air passage 3 is constant), and at the same time, a small amount of liquid is generated along with the gate located at the edge of the protrusion, so the amount of subsequent reprocessing is also less), ensuring the forming of the alloy thin-walled part protrusion.

[0035] Furthermore, the air passage 3 creates a sealed conveying effect after the mold is closed, and returns to its original state after the mold is opened. In addition, the trapezoidal opening 31 has a right-angled trapezoidal cross section, so that the length of the remaining small amount of gate is longer, and subsequent processing is more convenient.

[0036] The location of the sprue 10 ensures that the raw liquid enters the main mold cavity 11 while also quickly delivering it to the secondary mold cavity 12, guaranteeing the molding of the protruding part of the thin-walled alloy component. Meanwhile, the air in the secondary mold cavity 12 is squeezed into the air passage 3 by the raw liquid to unlock the sealing part 5, allowing the trapezoidal column 52 to move down quickly and seal the trapezoidal opening 31. This ensures that the raw liquid is isolated by the trapezoidal column 52 when it reaches the port of the trapezoidal opening 31, guaranteeing the air discharge function in the secondary mold cavity 12. At the same time, it also ensures that there are no or very few gates after the protruding part of the thin-walled alloy component is molded, reducing the workload of subsequent reprocessing of the protruding part of the thin-walled alloy component, reducing damage problems, and improving the overall yield of the thin-walled alloy component.

[0037] As a further embodiment of this utility model, the trapezoidal opening 31 is also provided with an oblique opening 32, and the end of the trapezoidal column 52 is provided with an oblique block 53 that is obliquely slidably assembled with the oblique opening 32.

[0038] Specifically, the angled opening 32 faces the secondary mold cavity 12 at a lower position, reducing the amount of raw liquid entering the trapezoidal opening 31. The trapezoidal column 52, which moves down to the termination position, matches the port of the trapezoidal opening 31. The upper mold 2 has a chamber for the trapezoidal column 52 and the driving component 4 to move. This chamber remains sealed after the mold is closed to avoid interfering with the operation of the air passage 3. At the same time, the chamber is also responsible for storing some of the air diverted in the air passage 3 to ensure the normal movement of the trapezoidal column 52.

[0039] As the inclined block 53 moves downward with the trapezoidal column 52, its lower tip first contacts the high position of the inclined opening 32. During the sliding process of the inclined surface of the inclined block 53 and the inclined surface of the inclined opening 32, the trapezoidal column 52 completes the finishing of its downward path and performs a horizontal pushing action. This is used to push back the small amount of original liquid entering at the port of the trapezoidal opening 31 by the lower end face of the trapezoidal column 52 and the right-angle end face of the inclined block 53, thereby reducing the formation of a gate.

[0040] As another embodiment provided in this utility model, the sealing member 5 is provided with a groove 50 that slides and engages with the upper mold 2.

[0041] Specifically, the chute 50 is a combination of vertical and inclined channels, and the inclined channel has the same inclination angle as the inclined surface on the inclined block 53.

[0042] The symmetrical sliders fixedly installed in the upper mold 2 cavity slide in the two slide grooves 50, so that the movement of the trapezoidal column 52 is guided and limited.

[0043] As another embodiment further provided by this utility model, the sealing member 5 is also provided with an elastic member 51 that cooperates with the groove 50.

[0044] Specifically, the elastic element 51 abuts against the cavity opened in the upper mold 2, and a rubber strip that slides against the inner wall of the cavity is fixedly installed on the trapezoidal column 52.

[0045] When the sealing member 5 is locked, the elastic member 51 is compressed and deformed so that the ladder column 52 can move when the elastic member 51 recovers its deformation after being unlocked. This prevents the ladder column 52 from moving too fast and generating airflow, and allows the airflow to enter the original liquid and generate bubbles.

[0046] As another embodiment of this utility model, a plug 41 is movably mounted on the drive member 4 and moves in a piston-like motion with the air passage 3.

[0047] Specifically, the plug 41 consists of a circular plate with a rubber ring fixedly fitted, a vertical rod, and a ball-shaped connector, so that a thrust is generated in the columnar cavity opened on the upper mold 2 to act on the circular plate, and the multi-angle movement of the ball-shaped connector is used to drive the drive component 4 to rotate around the hinge position.

[0048] The plug 41 can quickly receive the transmission of air pressure, ensuring the rotation of the drive component 4.

[0049] As another embodiment of this utility model, the blocking member 5 is provided with a contact block 54, and the driving member 4 is also provided with a locking member 42 for locking the contact block 54.

[0050] Specifically, the torsion spring at the hinge position of the drive component 4 has a greater torsional force than the elastic deformation force of the elastic component 51. The contact block 54 is the original column on the sealing component 5 that has not yet started to slope, and its length is sufficient to facilitate the symmetrical opening of the slide groove 50.

[0051] Furthermore, the locking element 42 is the output end of the rotating and tilting action of the driving element 4, and the lower edge of the end of the locking element 42 is rounded.

[0052] The locking element 42 in its default state provides an upward pushing force to the contact block 54, ensuring that the elastic element 51 is in a compressed state.

[0053] As another embodiment of this utility model, the sealing member 5 is further provided with a rounded corner block 55 arranged opposite to the contact block 54, and the rounded corner block 55 slides with the locking member 42 to lock the sealing member 5.

[0054] Specifically, the rounded corner block 55 and the elastic element 51 are offset on the horizontal plane to avoid motion interference.

[0055] The blocking component 5 is unlocked by rotating the locking component 42 away from the contact block 54. When the blocking component 5 moves up and resets, the arc surface on the rounded corner block 55 can slide with the rounded corner treatment position on the locking component 42, reducing the sliding friction and making the reset of the blocking component 5 smoother.

[0056] As another embodiment of this utility model, it also includes a guide rod 6 that is movable in the airway 3 and pushes the sealing member 5 to reset.

[0057] Specifically, the guide rod 6 is driven by a hydraulic rod or a cylinder, as is the case in the prior art, which will not be elaborated here. The guide rod 6 is located far away from the trapezoidal opening 31 to avoid the original liquid flowing in and affecting the movement of the guide rod 6.

[0058] The guide rod 6 moves upwards individually during the mold opening process to allow the upper end of the guide rod 6 to push the sealing part 5 back to its original position.

[0059] As another embodiment provided in this utility model, the elastic element 51 is arc-shaped.

[0060] The arc-shaped elastic element 51 allows it to release deformation force in any direction, and under the limiting and guiding effect of the slide groove 50, the sealing element 5 moves down and pushes along a predetermined path.

[0061] As another embodiment further provided in this utility model, the elastic element 51 is specifically an elastic metal sheet.

[0062] The elastic metal sheet increases the service life and durability of the elastic element 51, and also ensures the stability of the movement of the sealing element 5 under long-term use.

[0063] Working principle: The location of the sprue 10 ensures that the raw liquid enters the main mold cavity 11 while also quickly delivering the raw liquid to the secondary mold cavity 12, ensuring the molding of the protruding part of the thin-walled alloy part. The air in the secondary mold cavity 12 is squeezed into the air channel 3 by the raw liquid to unlock the sealing part 5, so that the trapezoidal column 52 moves down quickly and seals the trapezoidal opening 31. This ensures that the raw liquid is isolated by the trapezoidal column 52 when it reaches the port of the trapezoidal opening 31, ensuring the air discharge function in the secondary mold cavity 12. At the same time, it also ensures that there are no gates or very few gates after the protruding part of the thin-walled alloy part is molded.

[0064] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A micro-vibrating exhaust device for a casting mold of a precision alloy thin-walled part, comprising a lower mold (1) and an upper mold (2), characterized in that, It also includes a main mold cavity (11) which is opened on the lower mold (1) and has multiple sub-mold cavities (12), and the main mold cavity (11) is provided with a pouring port (10) located at the port of the sub-mold cavity (12); An air passage (3) for discharging air is provided between two adjacent sub-mold cavities (12), and the port of the air passage (3) is provided with a trapezoidal opening (31); The upper mold (2) is provided with a driving component (4) that is driven to flip by the pressure of the air passage (3), and the flipped driving component (4) unlocks the sealing component (5) provided in the upper mold (2), so that the trapezoidal column (52) provided on the sealing component (5) moves vertically downward to fill the trapezoidal opening (31).

2. The precision alloy thin-walled part casting mold micro-vibration exhaust device according to claim 1, characterized in that, The trapezoidal opening (31) is also provided with an oblique opening (32), and the end of the trapezoidal column (52) is provided with an oblique block (53) that is obliquely slidably assembled with the oblique opening (32).

3. The precision alloy thin-walled part casting mold micro-vibration exhaust device according to claim 2, characterized in that, The sealing component (5) is provided with a groove (50) that slides with the upper mold (2).

4. The precision alloy thin-walled part casting mold micro-vibration exhaust device according to claim 3, characterized in that, The sealing member (5) is also provided with an elastic member (51) that cooperates with the slide groove (50).

5. The micro-vibrating venting device for casting mold of precision alloy thin-walled part according to claim 3, characterized in that, The drive member (4) is movably fitted with a plug (41) that moves in a piston-like motion with the air passage (3).

6. The precision alloy thin-walled part casting mold micro-vibration exhaust device according to claim 4, characterized in that, The sealing member (5) is provided with a contact block (54), and the driving member (4) is also provided with a locking member (42) for locking the contact block (54).

7. The precision alloy thin-walled part casting mold micro-vibration exhaust device according to claim 6, characterized in that, The sealing member (5) is also provided with a rounded corner block (55) arranged opposite to the contact block (54), and the rounded corner block (55) slides with the locking member (42) to lock the sealing member (5).

8. The precision alloy thin-walled part casting mold micro-vibration exhaust device according to claim 7, characterized in that, It also includes a guide rod (6) that moves in the airway (3) and pushes the sealing member (5) to reset.

9. The precision alloy thin-walled part casting mold micro-vibration exhaust device according to claim 7, characterized in that, The elastic element (51) is arc-shaped.

10. The precision alloy thin-walled part casting mold micro-vibration exhaust device according to claim 9, characterized in that, The elastic element (51) is specifically an elastic metal sheet.

Images