A die-casting mold for sight housing

Abstract

The present invention relates to the field of die-casting technology, and specifically to a die-casting mold for a scope housing, which is used for die-casting a scope housing with a central cavity, wherein both ends of the central cavity are open, and the die-casting mold comprises a fixed mold and a movable mold, wherein the movable mold is provided with a left slider and a right slider that can move toward each other, and a driving mechanism for driving the left slider and the right slider to abut against each other, and after the fixed mold and the movable mold are closed, the outer sides of the left slider and the right slider form a molding cavity with the inner cavities of the fixed mold and the movable mold, and the present application can realize rapid filling and solidification through the die-casting process, thereby greatly shortening the production cycle, and secondly, since the metal liquid fills the mold cavity under high pressure, the density and mechanical properties of the housing can be ensured, thereby improving the product quality, and in addition, the die-casting mold can also realize high-precision processing, thereby ensuring that the size accuracy and shape accuracy of the scope housing meet the design requirements.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting, in particular to a die-casting mould for a sighting scope housing. Background Art

[0002] In the manufacturing process of the scope, the traditional method usually adopts the bar processing method, that is, the original metal material is gradually processed into the shape of the scope shell through mechanical processing processes such as cutting, milling, and grinding. Although this method can produce high-precision and high-quality scope shells, its processing efficiency has become a bottleneck restricting production efficiency.

[0003] First of all, the process of bar processing is complicated and time-consuming. Due to the complex shape of the sight housing, it requires multiple processes and fine machining to achieve. This not only increases the difficulty and cost of processing, but also leads to an extension of the production cycle, making it difficult to meet the needs of large-scale production.

[0004] Secondly, the utilization rate of materials during the processing is low. During the bar processing and forming process, a large amount of material is removed as waste, resulting in a waste of material costs. At the same time, due to the cutting heat and cutting force generated during the processing, the tool and machine tool will also be worn, further increasing the production cost. Summary of the invention

[0005] In response to the above problems, a die-casting mold for a scope housing is provided. The introduction of the die-casting mold for the scope housing has become an effective way to improve production efficiency. The die-casting mold quickly fills the molten metal into the mold cavity through high pressure, and forms the required part shape after solidification, thereby solving the problem of low production efficiency of existing scope housings.

[0006] In order to solve the problems of the prior art, the present invention provides a die-casting mold for a scope housing, which is used for die-casting a scope housing with a central cavity, and both ends of the central cavity are open. The die-casting mold includes a fixed mold and a movable mold. The movable mold is provided with a left slider and a right slider that can move toward each other, and a driving mechanism for driving the left slider and the right slider to abut against each other. After the fixed mold and the movable mold are closed, the outer sides of the left slider and the right slider form a molding cavity with the inner cavities of the fixed mold and the movable mold. Both the fixed mold and the movable mold are provided with a molding rod that can extend along the closing direction. The molding rod extends into the molding cavity and abuts on the left slider.

[0007] Preferably, after the movable mold and the fixed mold are closed, a wave-shaped overflow groove linked to the molding cavity is formed.

[0008] Preferably, a fixed overflow block is provided in the fixed mold, and a movable overflow block is provided in the movable mold. The fixed overflow block and the movable overflow block fit together to form a wavy overflow groove, and the wavy overflow groove is connected to the outside air.

[0009] Preferably, a pouring gate connected to the molding cavity is provided on the fixed mold, and there are two molding cavities, both of which are connected to the pouring gate.

[0010] Preferably, the driving mechanism comprises two cylinders arranged on the movable mold, and two mounting seats respectively connected to the output shafts of the two cylinders, and the left slider and the right slider are respectively arranged on the two mounting seats.

[0011] Preferably, a sliding groove is provided on the movable mold, and the mounting seat is slidably arranged in the sliding groove.

[0012] Preferably, both the movable mold and the fixed mold are provided with cooling channels penetrating therethrough and close to the molding cavity.

[0013] Preferably, the movable mold is further provided with a movable plate capable of sliding relative thereto, and the movable plate is provided with an ejector pin extending along the clamping direction of the movable mold and the fixed mold, and the ejector pin slides through the movable mold.

[0014] Preferably, a positioning column extending along the clamping direction of the movable mold and the fixed mold is provided in the movable mold, and the positioning column slides through the movable plate. A limiting block located outside the movable plate is also provided in the movable mold, and the movable plate moves inside the limiting block.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: the present application can achieve rapid filling and solidification through the die-casting process, greatly shortening the production cycle; secondly, since the molten metal fills the mold cavity under high pressure, the density and mechanical properties of the shell can be ensured, thereby improving product quality; in addition, the die-casting mold can also achieve high-precision processing, ensuring that the size accuracy and shape accuracy of the sight shell meet the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereoscopic view of the sight housing;

[0017] Figure 2 It is a three-dimensional picture of the sight housing after the die-casting mold is closed;

[0018] Figure 3 It is a three-dimensional exploded view of the scope housing after the die-casting mold is split at the first viewing angle;

[0019] Figure 4 It is a three-dimensional exploded view of the scope housing after the die-casting mold is split from the second viewing angle;

[0020] Figure 5 yes Figure 4 A local enlarged view of point A;

[0021] Figure 6 It is a three-dimensional diagram of a moving mold in a die-casting mold for a sight housing;

[0022] Figure 7 yes Figure 6A partial enlarged view of point B;

[0023] Figure 8 The figure is a side view of a moving mold in a die-casting mold for a sight housing.

[0024] The numbers in the figure are: 1, fixed mold; 11, fixed overflow block; 12, pouring gate; 13, molding rod; 14, positioning column; 15, limit block; 2, movable mold; 21, movable overflow block; 3, left slider; 4, right slider; 5, driving mechanism; 51, cylinder; 52, mounting seat; 6, wavy overflow groove; 7, cooling channel; 8, movable plate; 81, ejector pin; 9, sight housing. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application provides:

[0027] A die-casting mold for a scope housing 9 is used for die-casting a scope housing 9 having a central cavity, both ends of the central cavity are open, the die-casting mold comprises a fixed mold 1 and a movable mold 2, the movable mold 2 is provided with a left slider 3 and a right slider 4 that can move toward each other, and a driving mechanism 5 for driving the left slider 3 and the right slider 4 toward each other for abutment, after the fixed mold 1 and the movable mold 2 are closed, the outer sides of the left slider 3 and the right slider 4 form a molding cavity with the inner cavities of the fixed mold 1 and the movable mold 2.

[0028] The die-casting mold of the sighting scope housing 9 is mainly composed of a fixed mold 1 and a movable mold 2, which work together in a closed mold state to complete the precision die-casting of the housing. The movable mold 2 is provided with a left slider 3 and a right slider 4 that can move toward each other along a preset track.

[0029] During the die-casting process, the driving mechanism 5 can accurately control the left slider 3 and the right slider 4 to move toward each other along a predetermined path until the two are closely abutted. In this process, the left slider 3 and the right slider 4 not only jointly shape the central cavity structure of the sight housing 9, but also ensure the openness and accuracy of both ends of the central cavity.

[0030] When the fixed mold 1 and the movable mold 2 are completely molded, the outer edges of the left slider 3 and the right slider 4 and the inner walls of the fixed mold 1 and the movable mold 2 together form a complete, high-precision molding cavity. The size, shape and precision of this molding cavity are strictly designed and calculated to ensure that the die-cast sight housing 9 can fully meet the design requirements.

[0031] This embodiment can achieve rapid filling and solidification through the die-casting process, which greatly shortens the production cycle. Secondly, since the molten metal fills the mold cavity under high pressure, the density and mechanical properties of the shell can be ensured, and the product quality can be improved. In addition, the die-casting mold can also achieve high-precision processing to ensure that the size accuracy and shape accuracy of the sight shell 9 meet the design requirements.

[0032] Forming rods 13 that can extend along the mold closing direction are provided in both the fixed mold 1 and the movable mold 2. The design of these forming rods 13 fully considers the mechanical principles and metal flow characteristics in the die casting process, ensuring that they can accurately extend into the molding cavity when the mold is closed and stably abut against the left slider 3.

[0033] As a movable part in the mold, the position and posture of the left slider 3 have a decisive influence on the formation of the molding cavity. The abutment design between the molding rod 13 and the left slider 3 realizes the precise control of the position of the left slider 3. During the mold closing process, the molding rod 13 will gradually penetrate into the molding cavity as the mold is closed, and at the same time push the left slider 3 to move to the predetermined position. This process not only ensures the accurate formation of the molding cavity, but also avoids casting defects caused by the position deviation of the left slider 3.

[0034] like Figure 3 , Figure 4 and Figure 6 As shown, after the movable mold 2 and the fixed mold 1 are closed, a wave-shaped overflow groove 6 linked to the molding cavity is formed.

[0035] The shape of the wavy overflow groove 6 can effectively guide and disperse the flow of molten metal during the filling process. When the molten metal is injected into the molding cavity under high pressure, some excess molten metal or gas will flow and be discharged quickly along the path of the wavy overflow groove 6, thereby avoiding casting defects caused by molten metal accumulation or gas retention.

[0036] The wavy overflow groove 6 not only improves the stability and controllability of the die casting process, but also further improves the manufacturing accuracy and surface quality of the sight housing 9. By optimizing the flow path and exhaust effect of the molten metal, defects such as pores and shrinkage in the casting can be effectively reduced, and the density and mechanical properties of the casting can be improved.

[0037] like Figure 3 and Figure 4 As shown, a fixed overflow block 11 is provided in the fixed mold 1, and a movable overflow block 21 is provided in the movable mold 2. The fixed overflow block 11 and the movable overflow block 21 are attached to each other to form a wavy overflow groove 6, and the wavy overflow groove 6 is connected to the outside air.

[0038] A fixed overflow block 11 is provided in the fixed mold 1, and a movable overflow block 21 is correspondingly provided in the movable mold 2. The two overflow blocks fit together when the molds are closed to form a unique wave-shaped overflow groove 6 structure.

[0039] When the molten metal is injected into the molding cavity under high pressure, the excess molten metal or the accompanying gas will flow rapidly along the channel of the wavy overflow groove 6. The close fit between the fixed overflow block 11 and the movable overflow block 21 ensures the continuity and sealing of the overflow groove, so that the molten metal can pass smoothly and be effectively discharged.

[0040] The wavy overflow groove 6 is directly connected to the outside air. This design allows the gas generated during the metal liquid filling process to quickly escape into the air, thereby avoiding defects such as pores and shrinkage caused by gas retention inside the casting. At the same time, the design of external air also helps to adjust the temperature and pressure distribution inside the mold, improving the stability and controllability of the die casting process.

[0041] like Figure 3 and Figure 4 As shown, a pouring port 12 communicating with the molding cavity is provided on the fixed mold 1 , and there are two molding cavities, both communicating with the pouring port 12 .

[0042] The pouring port 12 is arranged on the fixed mold 1 to ensure that the molten metal can smoothly and evenly enter the molding cavity. This design not only improves the filling efficiency of the molten metal, but also helps to reduce casting defects caused by uneven flow of the molten metal.

[0043] The molding cavity in the present mold is not a single structure, but is designed as two cavities that are independent of each other but are simultaneously connected to the pouring port 12. This allows two sighting scope housings 9 to be manufactured simultaneously during a single die-casting process, greatly improving production efficiency and resource utilization. At the same time, since both molding cavities are connected to the pouring port 12, the consistency and uniformity of the two housings during the metal liquid filling process can be ensured, thereby ensuring the quality stability of the product.

[0044] In addition, the design of the two molding cavities also brings flexibility to the mold structure. In the actual production process, the size, shape and position of the two molding cavities can be adjusted as needed to meet the manufacturing needs of different specifications and models of sighting scope housings 9. This flexibility not only meets the diverse needs of the market, but also brings more development opportunities and competitive advantages to enterprises.

[0045] like Figure 5 and Figure 7 As shown, both the fixed mold 1 and the movable mold 2 are provided with a molding rod 13 that can extend along the mold closing direction. The molding rod 13 extends into the molding cavity and abuts against the left slider 3.

[0046] like Figure 3 and Figure 4 As shown, the driving mechanism 5 includes two cylinders 51 arranged on the movable mold 2 and two mounting seats 52 respectively connected to the output shafts of the two cylinders 51 , and the left slider 3 and the right slider 4 are respectively arranged on the two mounting seats 52 .

[0047] Two cylinders 51 are arranged at appropriate positions of the movable mold 2 as the driving mechanism 5. Each has an independent output shaft, which can generate strong thrust and pull, and provide stable and reliable power support for the movement of the mold. In order to ensure a stable connection between the cylinder 51 and other parts of the mold, two mounting seats 52 are specially designed, which are tightly connected to the output shafts of the two cylinders 51 respectively.

[0048] The mounting seat 52 is connected to the left slider 3 and the right slider 4. When the cylinder 51 is working, the thrust or pull on its output shaft can be transmitted to the left slider 3 and the right slider 4 through the mounting seat 52, driving them to move according to a predetermined trajectory and speed.

[0049] The left slider 3 and the right slider 4 are key moving parts in the mold, and their positions and postures have a decisive influence on the formation of the molding cavity. In this design, the left slider 3 and the right slider 4 are respectively set on two mounting seats 52 and connected to other parts of the mold. This design ensures the stability and accuracy of the slider during movement and avoids casting defects caused by position offset.

[0050] like Figure 3 As shown, a sliding groove is provided on the movable mold 2, and the mounting seat 52 is slidably disposed in the sliding groove.

[0051] As a key structure on the movable mold 2, the design of the sliding groove fully considers the motion characteristics and mechanical principles of the mold. The sliding groove ensures that the mounting seat 52 can slide smoothly and stably in it. This design not only reduces the friction and wear between the mounting seat 52 and the movable mold 2, but also improves the overall operating efficiency and stability of the mold.

[0052] The mounting seat 52 is designed with an interface matching the output shaft of the cylinder 51 to ensure that the thrust or pull of the cylinder 51 can be accurately transmitted to the mounting seat 52. At the same time, the mounting seat 52 is also designed with a sliding part matching the sliding groove so that it can be tightly embedded in the sliding groove and slide along its track.

[0053] When the cylinder 51 is working, the thrust or pull on its output shaft is transmitted to the left slider 3 and the right slider 4 through the mounting seat 52. Since the mounting seat 52 is slidably arranged in the sliding groove, the slider can move smoothly along a predetermined track and speed under the drive of the cylinder 51. This design not only ensures the accuracy and stability of the slider movement, but also improves the durability and reliability of the mold.

[0054] like Figure 3 As shown, both the movable mold 2 and the fixed mold 1 are provided with cooling channels 7 penetrating therethrough and close to the molding cavity.

[0055] The cooling channel 7 not only runs through the main part of the mold, but is also arranged close to the molding cavity to ensure that the cooling medium can directly act on the hot spot area of ​​the mold to achieve a fast and efficient cooling effect.

[0056] The cooling channel 7 is usually in a regular shape such as a circle or rectangle to reduce flow resistance and improve cooling efficiency. At the same time, the layout of the cooling channel 7 also fully considers the structural characteristics of the mold and the requirements of the die-casting process to ensure that the cooling medium can be evenly distributed in various parts of the mold to avoid local overheating or uneven cooling.

[0057] In the actual production process, an appropriate amount of cooling medium such as water, oil or coolant is introduced into the cooling channel 7 to remove the heat generated in the mold by circulating. This can not only reduce the temperature of the mold and prevent the casting from producing defects such as shrinkage cavities and shrinkage due to overheating, but also extend the service life of the mold and improve production efficiency and product quality.

[0058] like Figure 8 As shown, the movable mold 2 is also provided with a movable plate 8 that can slide relative to it, and the movable plate 8 is provided with an ejector pin 81 extending along the mold closing direction of the movable mold 2 and the fixed mold 1, and the ejector pin 81 slides through the movable mold 2.

[0059] The movable plate 8 is connected to the movable mold 2 through a precise guide mechanism to ensure that the movable plate 8 can slide steadily and smoothly in the movable mold 2. This design not only improves the overall motion accuracy of the mold, but also provides a reliable basis for the subsequent ejector pin 81 operation.

[0060] On the movable plate 8, there is provided an ejector pin 81 extending along the direction of the movable mold 2 and the fixed mold 1. The ejector pin 81 extends along the direction of the movable mold 2 and the fixed mold 1, ensuring that the casting in the molding cavity can be accurately ejected when the mold is opened. At the same time, the ejector pin 81 also slides through the movable mold 2 and coordinates with the cooling channel 7 and other structures inside the movable mold 2.

[0061] The design of ejector pin 81 fully considers the shape, size and material of the casting. They are usually made of high-strength, high-wear-resistant alloy materials to ensure that they can withstand huge pressure and friction when ejecting the casting without deformation or damage. In addition, the shape of ejector pin 81 can smoothly enter the molding cavity and eject the casting, while avoiding adverse effects such as scratching or deformation of the casting.

[0062] During the working process of the mold, when the movable mold 2 is separated from the fixed mold 1, the movable plate 8 will slide along a predetermined trajectory and drive the ejector pin 81 forward. During the sliding process, the ejector pin 81 will gradually approach the casting in the molding cavity and eventually eject it out of the mold. This process not only realizes the smooth demolding of the casting, but also improves production efficiency and product quality.

[0063] like Figure 8 As shown, the movable mold 2 is provided with a positioning column 14 extending along the closing direction of the movable mold 2 and the fixed mold 1, and the positioning column 14 slides through the movable plate 8. The movable mold 2 is also provided with a limit block 15 located on the outside of the movable plate 8, and the movable plate 8 moves on the inside of the limit block 15.

[0064] The positioning column 14 is a guide and positioning component in the mold. The positioning column 14 extends along the direction of the movable mold 2 and the fixed mold 1, with one end fixed on the movable mold 2 and the other end sliding through the movable plate 8. During the mold closing process, the positioning column 14 will first be aligned with the corresponding hole on the fixed mold 1 and inserted, providing a reliable reference for the precise closing of the mold. At the same time, the positioning column 14 also guides and supports the movable plate 8 in the process of sliding through the movable plate 8, ensuring the stability and accuracy of the movable plate 8 during the movement.

[0065] In order to further limit the moving range of the movable plate 8 and prevent it from deflecting or shaking during the movement, a limit block 15 located outside the movable plate 8 is specially provided in the movable mold 2. The limit block 15 serves as a boundary constraint device for the movement of the movable plate 8, and its design fully considers the size, shape and movement trajectory of the movable plate 8. During the operation of the mold, the movable plate 8 will move inside the limit block 15 to ensure that it slides stably within a predetermined range. This can not only prevent the movable plate 8 from damaging the mold or affecting the quality of the casting due to excessive movement range, but also improve the overall stability and durability of the mold.

[0066] The coordinated work of the positioning column 14 and the limit block 15 realizes the precise positioning and smooth operation of the mold during the mold closing and mold opening processes.

[0067] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0068] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0071] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the scope defined by the spirit of the present invention.

Claims

1. A sighting scope housing die casting die, used for die casting a sighting scope housing (9) having a central cavity, the two ends of the central cavity being open, characterized in that: The die-casting mold comprises a fixed mold (1) and a movable mold (2), wherein the movable mold (2) is provided with a left slider (3) and a right slider (4) capable of moving toward each other, and a driving mechanism (5) for driving the left slider (3) and the right slider (4) to move toward each other so as to abut against each other. After the fixed mold (1) and the movable mold (2) are closed, the outer sides of the left slider (3) and the right slider (4) form a molding cavity with the inner cavities of the fixed mold (1) and the movable mold (2), and the fixed mold (1) and the movable mold (2) are both provided with a molding rod (13) capable of extending along the closing direction, and the molding rod (13) extends into the molding cavity and abuts against the left slider (3).

2. A die-casting mold for a sighting scope housing as claimed in claim 1, characterized in that: After the movable mold (2) and the fixed mold (1) are closed, a wave-shaped overflow groove (6) linked to the molding cavity is formed.

3. A die-casting mold for a sighting scope housing as claimed in claim 2, characterized in that: A fixed overflow block (11) is provided in the fixed mold (1), and a movable overflow block (21) is provided in the movable mold (2). The fixed overflow block (11) and the movable overflow block (21) are fitted together to form a wave-shaped overflow groove (6), and the wave-shaped overflow groove (6) is connected to the outside air.

4. A die-casting mold for a sight housing as claimed in claim 1, characterized in that: The fixed mold (1) is provided with a pouring port (12) connected to the molding cavity, and there are two molding cavities, both of which are connected to the pouring port (12).

5. A die-casting mold for a sight housing as claimed in claim 1, characterized in that: The driving mechanism (5) comprises two cylinders (51) arranged on the movable mold (2), and two mounting seats (52) respectively connected to the output shafts of the two cylinders (51), and the left slider (3) and the right slider (4) are respectively arranged on the two mounting seats (52).

6. A die-casting mold for a sight housing as claimed in claim 5, characterized in that: The movable mold (2) is provided with a sliding groove, and the mounting seat (52) is slidably arranged in the sliding groove.

7. A die-casting mold for a sighting scope housing as claimed in claim 1, characterized in that: The movable mold (2) and the fixed mold (1) are both provided with cooling channels (7) penetrating therethrough and close to the molding cavity.

8. The die-casting mold for a sight housing as claimed in claim 1, characterized in that: The movable mold (2) is also provided with a movable plate (8) capable of sliding relative thereto, and the movable plate (8) is provided with an ejector pin (81) extending along the mold closing direction of the movable mold (2) and the fixed mold (1), and the ejector pin (81) slides through the movable mold (2).

9. A die-casting mold for a sighting scope housing as claimed in claim 8, characterized in that: The movable mold (2) is provided with a positioning column (14) extending along the mold closing direction of the movable mold (2) and the fixed mold (1), and the positioning column (14) slides through the movable plate (8). The movable mold (2) is also provided with a limit block (15) located outside the movable plate (8), and the movable plate (8) moves inside the limit block (15).

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