Vacuumizing device for die-casting die
By integrating vacuuming, die casting, and ejection functions into the die casting mold, the problem of single-function technology in the prior art has been solved, achieving a highly efficient production process and improving product quality and production efficiency.
Patent Information
- Application Number
- CN202423175981.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing vacuum devices for die-casting molds have limited functionality and cannot simultaneously perform die-casting, vacuuming, and ejection, resulting in difficulties in improving production efficiency and quality.
A vacuuming device for die-casting molds was designed. When the mold is closed, a reset component pushes a movable block to move in the air extraction hole. Combined with a vacuum pump and an ejection component, the device integrates vacuuming, die-casting, and ejection functions. It includes the closing and reset of the movable block under negative pressure, and provides restoring force with the help of an elastic element.
It achieves multi-functional integration of die-casting molds, improving production efficiency and product quality. By simultaneously completing vacuuming, die-casting, and ejection operations, it enhances adaptability and production efficiency.
Smart Images
Figure CN223699275U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of mould, especially a vacuumizing device for die casting mould. BACKGROUND
[0002] Die casting is a kind of widely used forming technology, and the structure of die casting mould as the main part of producing parts determines the quality of products, and the vacuum die casting mould is a common mould structure at present, which mainly reduces the gas in the mould cavity by vacuumizing the mould, so as to reduce the blowhole in the die casting.
[0003] In the prior art, the common vacuumizing device is connected to the exhaust port of the mould separately, and only responsible for removing the gas in the mould core, the function is relatively single, how to design a vacuumizing device for die casting mould, which can be matched with the die casting mould to realize the functions of die casting and ejection simultaneously, is a technical problem that the technical personnel of enterprises need to solve urgently. UTILITY MODEL CONTENT
[0004] In view of the deficiencies in the prior art, the application provides a vacuumizing device for die casting mould.
[0005] The above application aims to be realized by the following technical scheme:
[0006] Upper mould;
[0007] Lower mould, the lower mould is used for closing with the upper mould to form a mould set, the lower mould is provided with a lower mould core, the lower mould core is provided with a communication port for communicating with the mould core of the external die casting mould, the lower mould core communicates with the mould core of the external die casting mould through the communication port to form a complete die casting mould core, a gas extraction hole is vertically arranged in the lower mould core, a movable block is slidably arranged in the gas extraction hole, the movable block comprises a closing part and a communication part fixedly connected to the bottom end of the closing part, the size of the closing part is matched with the size of the gas extraction hole, a gap is left between the communication part and the gas extraction hole, a connecting hole is arranged in the inner wall of the gas extraction hole, and a vacuumizing air pump is arranged in the connecting hole, when the upper mould and the lower mould are closed, the upper mould, the lower mould, the lower mould core and the mould core of the external die casting mould form a closed cavity with the same shape as the die casting part;
[0008] Resetting assembly, the resetting assembly is arranged in the lower mould and connected to the movable block, and is used for pushing the movable block to move upward in the gas extraction hole;
[0009] Ejection assembly, the ejection assembly is connected to the resetting assembly, and is used for ejecting the die casting part when the closing part is separated from the gas extraction hole.
[0010] By adopting the technical scheme, when the mold is closed, the movable block moves upward in the air exhaust hole under the action of the reset assembly, so that the closing part is separated from the air exhaust hole. Since a gap is left between the connecting part and the air exhaust hole, gas can enter from the air exhaust hole, and then the vacuum pump is started to exhaust the gas in the closed cavity through the air exhaust hole and the connecting hole. At the same time, the closing part of the movable block gradually moves downward under the action of negative pressure until the closed cavity enters the air exhaust hole after the vacuum is completed, the closing of the air exhaust hole is completed, and then the die casting operation is performed to inject molten metal into the blank of the external die casting mold and fill the entire closed cavity through the connecting hole. After the metal cools and solidifies, the vacuum pump stops working, the reset assembly pushes the movable block upward for resetting, preparing for the next closing and vacuuming, and driving the ejection assembly to eject the die casting, completing the die casting and ejection of the die casting. Compared with the common vacuum device, not only the vacuum function is provided, but also the reset assembly and the ejection assembly are combined to realize the integration of the functions of die casting, vacuuming, ejecting and resetting with the die casting mold, which has strong adaptability, thereby improving the production efficiency and quality of products.
[0011] In a preferred example, the ejection assembly includes an ejection rod and a connecting plate, the lower blank is vertically provided with an ejection hole, the ejection rod is slidingly arranged in the ejection hole, and the connecting plate is vertically slidingly arranged in the lower mold. The movable block and the ejection rod are both fixedly connected to the connecting plate, and the reset assembly includes an elastic member arranged in the lower mold and used for continuously providing an upward thrust to the connecting plate.
[0012] By adopting the technical scheme, when the mold is closed, the movable block moves downward under the action of negative pressure to abut against the spring washer to make it in a compressed state. When the die casting solidifies and the vacuum pump stops working, the spring washer provides an upward restoring force to the connecting plate through the action of expansion and contraction deformation.
[0013] In a preferred example, the elastic member is a spring washer arranged below the connecting plate and used for abutting against the connecting plate.
[0014] By adopting the technical scheme, when the mold is closed, the movable block moves downward under the action of negative pressure to abut against the spring washer to make it in a compressed state. When the die casting solidifies and the vacuum pump stops working, the spring washer provides an upward restoring force to the connecting plate through the action of expansion and contraction deformation.
[0015] The application can be further configured in a preferred example that the connecting plate is vertically installed with an opening die rod, the opening die rod vertically slides through the inside of the lower die, and the opening die rod is used to abut the upper die.
[0016] By adopting the above technical scheme, when the connecting plate drives the ejection rod to move upward, the opening die rod can move upward synchronously and abut the upper die to assist the synchronous opening die operation of the external die casting die, thereby providing space for the ejection operation of the die casting, and the combination of the opening die rod and the ejection assembly makes the die casting process smoother and more efficient.
[0017] The application can be further configured in a preferred example that the inside of the lower die is fixedly connected with a limiting block, and the limiting block is used to abut the top of the connecting plate.
[0018] By adopting the above technical scheme, the limiting block can limit the movement path of the connecting plate to play a limiting role and avoid the disengagement of the movable block and the ejection rod from the lower die.
[0019] In summary, the application has at least one of the following beneficial technical effects:
[0020] 1. When the die is closed, the movable block moves upward in the air hole under the action of the reset assembly to make the closing part disengage from the air hole. Since there is a gap between the communication part and the air hole, gas can enter from the air hole, and then the vacuum pump is started to exhaust the gas in the closed cavity through the air hole and the connecting hole. At the same time, the closing part of the movable block gradually moves downward under the action of negative pressure until the closed cavity enters the air hole after the closed cavity is vacuumized, the closing of the air hole is completed, and then the die casting operation is performed to inject molten metal into the blank of the external die casting die and fill the entire closed cavity through the communication port. After the metal cools and solidifies, the die casting is completed, and after solidification, the vacuum pump stops working, the reset assembly pushes the movable block upward for resetting, and the ejection assembly is driven to eject the die casting, thereby completing the die casting and ejection of the die casting. Compared with the common vacuum device, the vacuum device not only has the vacuum function, but also is combined with the reset assembly and the ejection assembly to realize the integration of the die casting, vacuumizing, ejecting, and resetting functions in combination with the die casting die, has strong adaptability, and thus improves the production efficiency and quality of the product.
[0021] 2、When the die casting is solidified and the vacuum air pump stops working, the spring washer is deformed to provide upward restoring force to the connecting plate, so that the connecting plate drives the movable block and the ejector rod to move upward synchronously, so that the ejector rod slides upward in the ejector hole until it contacts the bottom of the die casting, so as to realize the ejection of the die casting, and the closing part of the movable block is also separated from the air exhaust hole, the reset is completed, the integration of the functions of vacuumizing, die casting, ejecting and resetting is realized, and the ejection efficiency is improved.
[0022] 3、When the connecting plate drives the ejector rod to move upward, the mold opening rod can move upward synchronously and abut against the upper mold to assist the synchronous mold opening operation of the external die casting mold, so as to provide space for the ejection operation of the die casting, and the combination of the mold opening rod and the ejector assembly makes the die casting process more smooth and efficient. BRIEF DESCRIPTION OF DRAWINGS
[0023] Fig. 1 is the overall structure schematic diagram of the vacuumizing device for the die casting mold in an embodiment of the present application;
[0024] Fig. 2 is the partial structure schematic diagram of the vacuumizing device for the die casting mold in an embodiment of the present application after removing the upper mold;
[0025] Fig. 3 is the cross-sectional structure schematic diagram of the vacuumizing device for the die casting mold in an embodiment of the present application.
[0026] Reference signs: 1, upper mold; 2, lower mold; 3, lower mold base; 4, communication port; 5, air exhaust hole; 6, movable block; 61, closing part; 62, communication part; 7, connecting hole; 8, vacuum air pump; 9, ejector assembly; 91, ejector rod; 92, connecting plate; 10, ejector hole; 11, spring washer; 12, mold opening rod; 13, limiting block. DETAILED DESCRIPTION
[0027] The exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to assist in understanding, and should be considered as merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Also, in order to be clear and concise, the description below omits the description of well-known functions and structures.
[0028] It should be noted that the terms "first", "second", and the like in the present utility model are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the disclosure described herein can be implemented in an order other than those illustrated or described herein. The implementation described in the following exemplary embodiments does not represent all implementations consistent with the present disclosure.
[0029] In addition, the term "and / or" herein is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects unless otherwise specified.
[0030] A vacuum device for die casting mold is described below with reference to the accompanying drawings.
[0031] Referring to Figs. 1 to 3 The vacuum device for die casting mold includes an upper mold 1 and a lower mold 2, the lower mold 2 is used to close the mold with the upper mold 1 to form a mold set, the upper mold 1 and the lower mold 2 are respectively installed on the upper mold and the lower mold (not shown in the figure) of the external die casting mold, the lower mold is driven by the external die casting machine to move close to or away from the upper mold, thereby realizing the functions of mold opening and closing, the functions and principles of the die casting machine are well known to those skilled in the art, and will not be described here.
[0032] The lower mold 2 is provided with a lower mold body 3, the lower mold body 3 is provided with a communication port 4 for communicating with the mold body of the external die casting mold, the lower mold body 3 communicates with the mold body of the external die casting mold through the communication port 4 to form a complete die casting mold body, a vertical air exhaust hole 5 is arranged in the lower mold body 3, a movable block 6 is slidably arranged in the air exhaust hole 5, the movable block 6 comprises a closing part 61 and a communication part 62 fixedly connected to the bottom end of the closing part 61, the size of the closing part 61 is matched with the size of the air exhaust hole 5, and a gap is left between the communication part 62 and the air exhaust hole 5, a connecting hole 7 is arranged in the inner wall of the air exhaust hole 5, and a vacuum air pump 8 is communicated with the connecting hole 7, when the upper mold 1 and the lower mold 2 are closed, a closed cavity with the same shape as the die casting part is formed between the upper mold 1, the lower mold 2, the lower mold body 3 and the mold body of the external die casting mold, a reset assembly and an ejection assembly 9 are arranged in the lower mold 2, the reset assembly is connected to the movable block 6 and is used to push the movable block 6 to move upward in the air exhaust hole 5, the ejection assembly 9 is connected to the reset assembly and is used to eject the die casting part when the closing part 61 is separated from the air exhaust hole 5, when the mold is closed, the movable block 6 moves upward in the air exhaust hole 5 under the action of the reset assembly, so that the closing part 61 is separated from the air exhaust hole 5, because the gap is left between the communication part 62 and the air exhaust hole 5, the gas can enter the air exhaust hole 5, then the vacuum air pump 8 is started, the gas in the closed cavity is exhausted through the air exhaust hole 5 and the connecting hole 7, at the same time, the closing part 61 of the movable block 6 gradually moves downward under the action of negative pressure, until the closed cavity is completed vacuumizing and enters the air exhaust hole 5, the closing of the air exhaust hole 5 is completed, then the die casting operation is carried out, the molten metal is injected into the mold body of the external die casting mold, and the whole closed cavity is filled by matching the communication port 4, the formation of the die casting part is completed after the metal is cooled and solidified, after solidification, the vacuum air pump 8 stops working, the reset assembly pushes the movable block 6 to reset upward, prepares for the next closing and vacuumizing, and drives the ejection assembly 9 to eject the die casting part, the die casting and ejection of the die casting part are completed, compared with the common vacuumizing device, not only has the function of vacuumizing, but also is combined with the reset assembly and the ejection assembly 9, realizes the integration of the functions of die casting, vacuumizing, ejection and reset matched with the die casting mold, has strong adaptability, and thus improves the production efficiency and quality of products.
[0033] It should be noted that when the vacuum air pump 8 performs the vacuumizing operation, the time for the closing part 61 to gradually move downward until the cooperation with the air exhaust hole 5 is consistent with the time for the air in the closed cavity to be exhausted, the two processes are synchronously performed, the process is smooth and efficient, and the time can be obtained by tests of those skilled in the art, which is not limited and described herein.
[0034] In an embodiment, the ejection assembly 9 comprises an ejection rod 91 and a connecting plate 92, the lower die 2 is vertically provided with an ejection hole 10, the ejection rod 91 is slidingly arranged in the ejection hole 10, the connecting plate 92 is slidingly arranged in the lower die 2, the movable block 6 and the ejection rod 91 are both fixedly connected to the connecting plate 92, the reset assembly comprises an elastic member, the elastic member is arranged in the lower die 2 and is used to continuously provide an upward thrust to the connecting plate 92, when the mold is closed, the movable block 6 drives the connecting plate 92 to move downward under the action of negative pressure, when the die casting is solidified and the vacuum air pump 8 stops working, the elastic member provides an upward thrust to the connecting plate 92, so that the connecting plate 92 drives the movable block 6 and the ejection rod 91 to move upward synchronously, so that the ejection rod 91 slides upward in the ejection hole 10 until it contacts the bottom of the die casting, so as to realize the ejection of the die casting, and the closing part 61 of the movable block 6 also leaves the air exhaust hole 5, the reset is completed, the integration of the functions of vacuumizing, die casting, ejection and resetting is realized, and the ejection efficiency is improved.
[0035] Specifically, the elastic member is a spring washer 11, the spring washer 11 is arranged below the connecting plate 92 and is used to abut against the connecting plate 92, when the mold is closed, the movable block 6 drives the connecting plate 92 to move downward under the action of negative pressure, so as to abut against the spring washer 11 to make it in a compressed state, when the die casting is solidified and the vacuum air pump 8 stops working, the spring washer 11 deforms by stretching and contracting to provide an upward restoring force to the connecting plate 92.
[0036] Further, the connecting plate 92 is vertically provided with an opening rod 12, the opening rod 12 slidingly penetrates the inside of the lower die 2, and the opening rod 12 is used to abut against the upper die 1, when the connecting plate 92 drives the ejection rod 91 to move upward, the opening rod 12 can move upward synchronously and abut against the upper die 1, so as to cooperate with the external die casting mold to synchronously perform the opening operation, to provide space for the ejection operation of the die casting, the combination of the opening rod 12 and the ejection assembly 9 makes the die casting process more smooth and efficient.
[0037] Further, the lower die 2 is fixedly connected with a limiting block 13 inside, the limiting block 13 is used to abut against the top of the connecting plate 92, by arranging the limiting block 13, the movement path of the connecting plate 92 can be limited, so as to play a limiting role, and avoid the movable block 6 and the ejection rod 91 from leaving the lower die 2.
[0038] The implementation principle of the vacuumizing device for the die-casting die is as follows: after the die is closed, the vacuumizing air pump 8 is started to make the gas in the closed cavity be extracted through the air extraction hole 5 and the connecting hole 7, at the same time, the closing part 61 of the movable block 6 is gradually moved downward under the action of the negative pressure until entering the air extraction hole 5, the closing of the air extraction hole 5 and the vacuumizing operation are completed, after the die-casting operation is completed, the negative pressure state in the closed cavity is released, at this time, the elastic gasket pushes the connecting plate 92 in the inner die 2 to drive the movable block 6, the ejection rod 91 and the opening rod 12 to move upward synchronously, so that the reset, the ejection of the die-casting casting and the auxiliary opening of the die are completed synchronously, compared with the common vacuumizing device, not only the vacuumizing function is provided, but also the reset assembly and the ejection assembly 9 are combined to realize the integration of the die-casting, the vacuumizing, the ejection and the reset functions matched with the die-casting die, the adaptability is strong, so that the production efficiency and the quality of the product are improved.
[0039] The above specific embodiments do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A vacuum-pumping device for a die-casting mold, characterized by comprising: The utility model relates to a die-casting mould, which comprises: an upper die (1); a lower die (2) used for closing with the upper die (1) to form a die set, the lower die (2) is provided with a lower die body (3), the lower die body (3) is provided with a communication port (4) for communicating with an external die-casting die, the lower die body (3) communicates with the die body of the external die-casting die through the communication port (4) to form a complete die-casting die body, the lower die body (3) is vertically provided with an air extraction hole (5) inside, the air extraction hole (5) is slidably provided with a movable block (6) inside, the movable block (6) comprises a closing part (61) and a communication part (62) fixedly connected to the bottom end of the closing part (61), the size of the closing part (61) is matched with the size of the air extraction hole (5), a gap is left between the communication part (62) and the air extraction hole (5), the inner wall of the air extraction hole (5) is provided with a connecting hole (7), the connecting hole (7) is communicated with a vacuum air pump (8), when the upper die (1) and the lower die (2) are closed, a closed cavity with the same shape as the die-casting casting is formed between the upper die (1), the lower die (2), the lower die body (3) and the die body of the external die-casting die; a reset assembly arranged inside the lower die (2) and connected to the movable block (6), the reset assembly is used for pushing the movable block (6) to move upwardly in the air extraction hole (5); an ejection assembly (9) connected to the reset assembly, when the closing part (61) is separated from the air extraction hole (5), the ejection assembly (9) is used for ejecting the die-casting casting.
2. A vacuum extraction device for a die casting mold according to claim 1, wherein The ejection assembly (9) comprises an ejection rod (91) and a connecting plate (92), the lower die body (3) is vertically provided with an ejection hole (10), the ejection rod (91) is slidably arranged in the ejection hole (10), the connecting plate (92) is vertically slidably arranged inside the lower die (2), the movable block (6) and the ejection rod (91) are both fixedly connected to the connecting plate (92), the reset assembly comprises an elastic member, the elastic member is arranged inside the lower die (2) and is used for continuously providing an upward thrust to the connecting plate (92).
3. A vacuum extraction device for a die casting mold according to claim 2, wherein The elastic member is a spring washer (11), the spring washer (11) is arranged below the connecting plate (92) and is used for abutting against the connecting plate (92).
4. A vacuum extraction device for a die casting mold according to claim 2, wherein The connecting plate (92) is vertically provided with a mold opening rod (12), the mold opening rod (12) vertically slides through the inside of the lower die (2), and the mold opening rod (12) is used for abutting against the upper die (1).
5. A vacuum extraction device for a die casting mold according to claim 2, wherein The lower die (2) is fixedly connected with a limiting block (13) inside, and the limiting block (13) is used for abutting against the top of the connecting plate (92).