Supporting shaft precision forming die facilitating rapid stripping

Abstract

The utility model relates to die technical field discloses a kind of supporting shaft precision forming die of convenient quick stripping, including die component, lower die is fixed in die component inside, forming table and telescopic rod head are fixed in lower die inside, piston rod is slidably connected in telescopic rod head, piston rod top end connects upper die, the connecting plate of piston rod side is connected with the forming base sliding in forming table inside, air storehouse is equipped with air storehouse side, air storehouse side is equipped with valve nozzle of facing forming base heat dissipation hole, piston rod is connected with piston rod by connecting rod and is slidably connected in air storehouse, air storehouse side is equipped with valve nozzle of facing forming base heat dissipation hole.The scheme is driven connecting plate and forming base synchronous sliding by piston rod, realizes mould opening and ejection stripping mechanical linkage, solves the problem of shrinkage jam of forming piece, simultaneously, piston rod reset stroke drives air pressure rod compressed air, directional air blowing cooling is carried out through nozzle, mould closing action and heat dissipation are integrated, and casting cycle period is significantly shortened.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a precision forming mold for a support shaft that facilitates rapid unloading. Background Technology

[0002] As a key load-bearing component in a mechanical transmission system, the support shaft is usually manufactured by casting using precision molding dies. In actual industrial mass production, the molding die needs to frequently perform the cycle of mold closing and liquid injection and mold opening and part removal. This requires the mold equipment to not only have good cavity sealing to ensure casting accuracy, but also to have efficient operation flow capability to meet production capacity requirements.

[0003] However, existing support shaft forming molds have obvious structural limitations in practical applications. When the high-temperature molten metal cools and solidifies inside the cavity, the metal material will inevitably shrink in volume. The outer wall of the shrunken part will generate a large frictional resistance with the inner wall of the mold and get stuck. As a result, after the upper mold and lower mold are separated, the part is still stuck inside the forming base and is difficult to remove. Operators often need to use external tools to pry or knock to complete the unloading. This separation mold opening and unloading process is not only cumbersome to operate, but also easily causes physical damage to the surface of the precision forming part.

[0004] In addition to the obstacles caused by the difficulty of unloading, traditional molds also have significant shortcomings in heat management during continuous operation. Since the mold body mainly relies on the natural environment for passive heat dissipation after the molded part is removed, the large amount of high-temperature heat remaining in the internal structure dissipates relatively slowly. This results in the equipment needing to undergo a long cooling waiting period before entering the next mold closing and liquid injection process. This lag between the unloading mechanism and the heat dissipation mechanism leads to the extension of the entire casting cycle and directly restricts the large-scale production efficiency of the support shaft. Therefore, a precision forming mold for the support shaft that facilitates rapid unloading is proposed to solve the above problems. Utility Model Content

[0005] In view of the problems in the existing technology of precision forming molds for support shafts, such as the molded parts easily getting stuck inside the cavity after cooling and shrinking, leading to difficulties in unloading, and the mold body relying on natural cooling resulting in slow heat dissipation and excessively long waiting time between adjacent casting cycles, this utility model aims to provide a precision forming mold for support shafts with an improved structure that can effectively solve the above problems and facilitate rapid unloading.

[0006] This utility model provides a precision forming mold for a support shaft that facilitates rapid material removal. The mold includes a mold component with a rapid material removal mechanism inside. Heat dissipation mechanisms are provided on both sides of the mold component. The rapid material removal mechanism includes a lower mold fixedly connected to the bottom of the mold component. A forming platform is fixedly connected inside the lower mold. A telescopic rod head is fixedly connected inside the lower mold. A piston rod is slidably connected inside the telescopic rod head. An upper mold is fixedly connected to the top of the piston rod away from the telescopic rod head. A forming seat is fixedly connected to the bottom of the forming platform. A connecting plate is fixedly connected to the side of the piston rod. The connecting plate passes through and slidably connects to the forming platform and the forming seat. A forming base is fixedly connected to the side of the connecting plate near the forming seat. The forming base is slidably connected to the inside of the forming platform. The heat dissipation mechanism includes an air chamber fixedly connected to the side of the mold component. A pneumatic rod is slidably connected inside the air chamber. The top of the pneumatic rod away from the air chamber is fixedly connected to the side of the piston rod via a connecting rod.

[0007] Preferably, the bottom of the molding base is provided with heat dissipation holes that extend through both the upper and lower ends of the molding base. The through-hole design increases the contact area between the cold air and the bottom of the molding base, thereby improving the overall cooling efficiency.

[0008] Preferably, a valve nozzle is fixedly connected to the side of the air chamber near the mold component. The valve nozzle has a flow hole that penetrates the interior of the air chamber, and the compressed high-pressure gas is directed to the outside through the flow hole.

[0009] Preferably, the exhaust end of the valve nozzle is directly opposite the heat dissipation hole at the bottom of the molding base. This direct-facing spatial layout ensures that the airflow can be directly and efficiently blown onto the heat-generating area for concentrated cooling.

[0010] Preferably, the outer wall of the forming base slides against the inner wall of the forming platform, and the forming base and the inner wall of the forming platform enclose a precision forming cavity for the support shaft. This enclosing structure ensures smooth sliding while maintaining the tightness of the molten metal during the casting process.

[0011] Preferably, when the piston rod is in the lowest stroke position, the bottom surface of the upper mold is in close contact with the top surface of the lower mold, and the bottom surface of the molding base is in complete contact with the top surface of the molding base. The rigid contact between the surfaces provides a stable physical support for the molding operation.

[0012] Preferably, the forming table and the side wall of the forming seat are provided with guide grooves extending in the vertical direction, and the connecting plate is slidably connected inside the guide grooves. This guide structure strictly limits the sliding trajectory of the connecting plate to prevent it from deflecting during the lifting and lowering process.

[0013] Preferably, a sealing ring is attached and fixedly connected between the outer wall of the pneumatic rod and the inner wall of the air chamber. The pneumatic rod slides back and forth vertically along the inner wall of the air chamber, and the sealing ring effectively blocks the movement gap to ensure the compression effect of the gas inside the air chamber.

[0014] Preferably, the length direction of the air chamber is parallel to the sliding direction of the piston rod, and the valve nozzle is located at the bottom end of the air chamber near the forming table. The parallel spatial layout makes the overall mold structure more compact and the transmission more direct.

[0015] Preferably, the forming platform is fixedly connected to the center position inside the lower mold. The centrally symmetrical installation method helps to ensure the uniformity of force and the accuracy of the movement trajectory during the mold opening and closing process.

[0016] This utility model has the following beneficial effects: 1. In this utility model, by setting a telescopic rod head inside the lower mold to drive the piston rod to rise and fall, and using a connecting plate to rigidly connect the piston rod to the forming base, the piston rod drives the upper mold to rise and open the mold while simultaneously pulling the forming base to slide upward along the inner wall of the forming platform. This effectively solves the problem that the molded parts are easily stuck inside the cavity and difficult to remove after casting due to cooling and shrinkage after casting. It realizes the pure mechanical linkage between the mold opening action and the ejection and unloading action, effectively shortening the unloading time and improving the overall production efficiency.

[0017] 2. In this utility model, the piston rod is used to move downward to close the mold and reset. The connecting rod drives the air pressure rod to press down synchronously inside the air chamber to compress the air. The resulting high-pressure airflow is forced to blow through the valve nozzle to the heat dissipation hole opened at the bottom of the molding base. This design, which integrates the mold closing action with the cylinder compression blowing, does not require an external independent fan. While accurately removing the residual heat inside the mold, it significantly reduces the interval between two adjacent casting operations.

[0018] 3. In this utility model, guide grooves extending vertically are provided on the side walls of the forming table and the forming seat for the connecting plate to slide and engage. This, along with the tight fit structure between the contact surfaces of each mold when the piston rod is in the lowest stroke position, overcomes the engineering problem that the moving parts are prone to trajectory deflection during frequent lifting and lowering. While ensuring the long-term operational stability of the moving parts, it also ensures the tightness of the precision forming cavity of the support shaft under the molten metal injection state and the final casting accuracy. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of a precision forming mold for a support shaft that facilitates rapid unloading, as proposed in this utility model. Figure 2 This is a front view of a precision forming mold for a support shaft that facilitates rapid material removal, as proposed in this utility model. Figure 3 This is a schematic diagram of a piston rod for removing one side of a precision forming mold for a support shaft that facilitates rapid unloading, as proposed in this utility model. Figure 4 This is a cross-sectional view of the air chamber of a precision forming mold for a support shaft that facilitates rapid material removal, as proposed in this utility model. Figure 5 This is a schematic diagram of the upper mold of a precision forming mold for a support shaft that facilitates rapid unloading, as proposed in this utility model.

[0020] Legend: 1. Mold components; 2. Quick unloading mechanism; 21. Lower mold; 22. Forming platform; 23. Telescopic rod head; 24. Piston rod; 25. Upper mold; 26. Forming seat; 27. Connecting plate; 28. Forming base; 29. ​​Heat dissipation hole; 3. Heat dissipation mechanism; 31. Air chamber; 32. Valve nozzle; 33. Flow hole; 34. Air pressure rod; 35. Connecting rod. Detailed Implementation

[0021] 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.

[0022] Please refer to Figures 1 to 5 This utility model provides a precision forming mold for a support shaft that facilitates rapid material removal, aiming to solve the problems in the prior art where the formed parts are stuck in the cavity due to cooling shrinkage and the slow cooling of the mold leads to long waiting time for operation.

[0023] like Figure 1 and Figure 2 As shown, a precision forming mold for a support shaft that facilitates rapid material removal includes a mold component 1, a rapid material removal mechanism 2 disposed inside the mold component 1, and a heat dissipation mechanism 3 disposed on both sides of the mold component 1. The mold component 1 is used to support the overall mold structure and provide a basic installation platform. The rapid material removal mechanism 2 is used to complete the mechanical linkage action of mold closing and forming and mold opening and ejection. The heat dissipation mechanism 3 is used to perform synchronous air blowing and cooling during the mold closing and resetting stroke.

[0024] Regarding the specific structure of the rapid unloading mechanism 2, the lower mold 21 is fixedly connected to the bottom of the mold component 1. The lower mold 21 is used to construct the basic support frame of the forming mold. The forming platform 22 is fixedly connected to the center position inside the lower mold 21. A forming seat 26 is fixedly connected to the bottom of the forming platform 22. The telescopic rod head 23 is fixedly connected to the inside of the lower mold 21. A piston rod 24 is slidably connected inside the telescopic rod head 23. The telescopic rod head 23 is used to provide driving force for the reciprocating sliding of the piston rod 24 in the vertical direction. The top of the piston rod 24 away from the telescopic rod head 23 is fixedly connected to the upper mold 25. A connecting plate 27 is fixedly connected to the side of the piston rod 24. The connecting plate 27 passes through and is slidably connected inside the forming platform 22 and the forming seat 26. A forming base 28 is fixedly connected to the surface of the forming seat 26. The outer wall of the forming base 28 slides against the inner wall of the forming platform 22. The top surface of the forming base 28 and the inner wall of the forming platform 22 enclose a support shaft precision forming cavity. The side walls of the forming platform 22 and the forming seat 26 are provided with guide grooves extending in the vertical direction. The connecting plate 27 is slidably connected inside the guide groove. The width of the guide groove matches the thickness of the connecting plate 27 to limit the sliding trajectory. When the piston rod 24 is at the lowest stroke position, the bottom surface of the upper mold 25 and the top surface of the lower mold 21 are tightly fitted and matched in shape. The bottom surface of the forming base 28 and the top surface of the forming seat 26 are completely fitted and matched in shape. The rigid fit between the surfaces ensures the sealing of the forming cavity during the casting process.

[0025] For the specific structure and precise heat dissipation of the heat dissipation mechanism 3, a heat dissipation hole 29 is provided at the bottom of the molding base 28. The heat dissipation hole 29 penetrates the upper and lower ends of the molding base 28. Multiple sets of heat dissipation holes 29 are arranged in an array inside the molding base 28 to increase the contact area of ​​cold air. The air chamber 31 is fixedly connected to the side of the mold component 1. The length direction of the air chamber 31 is parallel to the sliding direction of the piston rod 24. A pneumatic rod 34 is slidably connected inside the air chamber 31. The top of the pneumatic rod 34 away from the air chamber 31 is fixedly connected to the side of the piston rod 24 through a connecting rod 35. The outer wall of the pneumatic rod 34 is in contact with the inner wall of the air chamber 31. The air chamber 31 is fixedly connected with a sealing ring made of high-temperature resistant rubber. The air pressure rod 34 slides back and forth vertically along the inner wall of the air chamber 31. A valve nozzle 32 is fixedly connected to the side of the air chamber 31 near the mold component 1. The valve nozzle 32 is located at the bottom of the air chamber 31 near the molding table 22. The valve nozzle 32 has a flow hole 33 that penetrates the interior of the air chamber 31. The exhaust end of the valve nozzle 32 is directly opposite the heat dissipation hole 29 opened at the bottom of the molding base 28. The unidirectional conduction characteristic of the valve nozzle 32 restricts the compressed high-pressure gas to be directionally transported only along the flow hole 33 to the inside of the heat dissipation hole 29 for blowing and cooling.

[0026] For the power source setting of the telescopic rod head 23, those skilled in the art can use conventional transmission mechanisms such as hydraulic cylinders or pneumatic push rods. The specific internal structure is well-known in the art and will not be described in detail here.

[0027] Working principle: The device is divided into three stages during use: mold closing and forming, rapid material removal and synchronous heat dissipation. The mold closing and forming stage is the initial state. The piston rod 24 inside the telescopic rod head 23 is in the lowest stroke position. The upper mold 25 at the top of the piston rod 24 is tightly fitted with the lower mold 21. The connecting plate 27 on the side of the piston rod 24 drives the forming base 28 to completely fit against the top surface of the forming seat 26. The forming base 28 and the inner wall of the forming table 22 form a support shaft precision forming cavity. Molten metal is injected into the cavity for casting.

[0028] After casting is completed, the rapid unloading stage begins. The telescopic rod head 23 drives the piston rod 24 to slide upward. The piston rod 24 drives the upper mold 25 to separate from the lower mold 21 to complete the mold opening action. The connecting plate 27, which slides inside the forming table 22 and the forming base 26, moves upward synchronously with the piston rod 24. The connecting plate 27 drives the forming base 28 to slide upward along the inner wall of the forming table 22. The forming base 28 lifts the molded part to the opening inside the forming table 22 for external material removal. The connecting rod 35 drives the pneumatic rod 34 to rise synchronously during the rise of the piston rod 24 and sucks air inside the air chamber 31.

[0029] After unloading, the synchronous heat dissipation stage begins. The telescopic rod head 23 drives the piston rod 24 to return to its original position. The piston rod 24 drives the air pressure rod 34 to slide down along the inner wall of the air chamber 31 via the connecting rod 35. The air pressure rod 34 compresses the air inside the air chamber 31 to form a high-pressure airflow. The high-pressure airflow is ejected directionally from the valve nozzle 32 through the flow hole 33. The airflow blows towards the heat dissipation hole 29 opened at the bottom of the molding base 28 and carries away the residual heat of the mold. When the piston rod 24 drives the upper mold 25 and the lower mold 21 to completely close the mold, the molding base 28 re-attaches to the molding seat 26.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precision forming mold for a support shaft that facilitates rapid unloading, comprising a mold component (1), characterized in that, The mold component (1) is provided with a quick unloading mechanism (2), and heat dissipation mechanisms (3) are provided on both sides of the mold component (1). The rapid unloading mechanism (2) includes a lower mold (21) fixedly connected to the bottom of the mold component (1). A forming platform (22) is fixedly connected inside the lower mold (21). A telescopic rod head (23) is fixedly connected inside the lower mold (21). A piston rod (24) is slidably connected inside the telescopic rod head (23). An upper mold (25) is fixedly connected to the top of the piston rod (24) away from the telescopic rod head (23). A forming seat (26) is fixedly connected to the bottom of the forming platform (22). A connecting plate (27) is fixedly connected to the side of the piston rod (24). The connecting plate (27) passes through and is slidably connected inside the forming platform (22) and the forming seat (26). A forming base (28) is fixedly connected to the surface of the connecting plate (27) near the forming seat (26). The forming base (28) is slidably connected inside the forming platform (22). The heat dissipation mechanism (3) includes an air chamber (31) fixedly connected to the side of the mold component (1). A pneumatic rod (34) is slidably connected inside the air chamber (31). The top of the pneumatic rod (34) away from the air chamber (31) is fixedly connected to the side of the piston rod (24) via a connecting rod (35).

2. The precision forming mold for a support shaft that facilitates rapid unloading according to claim 1, characterized in that, The bottom end of the molding base (28) is provided with heat dissipation holes (29), which penetrate the upper and lower ends of the molding base (28).

3. The precision forming mold for a support shaft that facilitates rapid unloading according to claim 2, characterized in that, The air chamber (31) is fixedly connected to a valve nozzle (32) on the side near the mold component (1), and the valve nozzle (32) has a flow hole (33) that penetrates the interior of the air chamber (31).

4. The precision forming mold for a support shaft that facilitates rapid unloading according to claim 3, characterized in that, The exhaust end of the valve nozzle (32) is directly opposite the heat dissipation hole (29) opened at the bottom end of the molding base (28).

5. A precision forming mold for a support shaft that facilitates rapid unloading, as described in claim 1, is characterized in that... The outer wall of the molding base (28) slides against the inner wall of the molding platform (22), and the molding base (28) and the inner wall of the molding platform (22) enclose each other to form a precision molding cavity for the support shaft.

6. The precision forming mold for a support shaft that facilitates rapid unloading according to claim 1, characterized in that, When the piston rod (24) is in the lowest stroke position, the bottom surface of the upper mold (25) is in close contact with the top surface of the lower mold (21), and the bottom surface of the forming base (28) is in complete contact with the top surface of the forming seat (26).

7. A precision forming mold for a support shaft that facilitates rapid unloading, as described in claim 1, is characterized in that... The forming table (22) and the forming seat (26) have guide grooves extending in the vertical direction on their side walls, and the connecting plate (27) is slidably connected inside the guide grooves.

8. A precision forming mold for a support shaft that facilitates rapid unloading, as described in claim 1, is characterized in that... A sealing ring is attached and fixedly connected between the outer wall of the pneumatic rod (34) and the inner wall of the air chamber (31), and the pneumatic rod (34) slides back and forth in the vertical direction along the inner wall of the air chamber (31).

9. A precision forming mold for a support shaft that facilitates rapid unloading according to claim 3, characterized in that, The length direction of the air chamber (31) is parallel to the sliding direction of the piston rod (24), and the valve nozzle (32) is located at the bottom end of the air chamber (31) near the forming table (22).

10. A precision forming mold for a support shaft that facilitates rapid unloading according to claim 1, characterized in that, The forming platform (22) is fixedly connected to the center position inside the lower mold (21).

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