A beryllium bronze high yield die assembly and method of use

Abstract

The present application relates to metal bar hot press forming technical field, disclose a kind of beryllium bronze high yield mould assembly and its using method, comprising: extruder, is equipped with extrusion shaft;Extrusion cylinder, slidingly connected in the rack of extruder, extrusion cylinder is throughly provided with bearing hole;Die holder, connected to the rack, die holder is detachably installed with mould in, the mould is provided with multiple extrusion holes, multiple extrusion holes are distributed in the circumferential array around the axis of mould, extrusion hole includes the thread shear hole and sizing hole sequentially arranged along the discharge direction;Drive part, connected to the die holder, drive part is drivenly connected with extrusion cylinder.It can form multiple beryllium bronze bars at a time by using the beryllium bronze high yield mould assembly and its using method, significantly improve the yield of beryllium bronze bar in unit time, and in the process of extrusion, beryllium bronze is forced to superimpose spiral shear deformation on the basis of axial compression flow, greatly improve the mechanical properties and quality of beryllium bronze bar.

Description

Technical Field

[0001] This invention relates to the field of hot pressing forming technology for metal rods, and more specifically, to a high-yield beryllium bronze mold assembly and its method of use. Background Technology

[0002] Beryllium bronze, a typical precipitation-strengthened copper alloy, is widely used in the manufacture of key components in aerospace, electronics and communications, petrochemicals and high-end manufacturing due to its high strength, high hardness, good thermal and electrical conductivity, non-magnetic properties and excellent corrosion resistance. In the production process of beryllium bronze bars, hot extrusion is the core forming process. Through the extrusion process, the ingot is densified and the initial grain refinement is achieved, providing a good microstructure basis for subsequent solution aging treatment.

[0003] Existing extrusion dies for beryllium bronze rod production typically have only a single forming die orifice, and can only produce one beryllium bronze rod per extrusion cycle. This results in a low output of beryllium bronze rods per unit time. Furthermore, during the extrusion process, the extrusion die only provides a single axial compression deformation. The coarse columnar and equiaxed crystal structures formed during the casting process of beryllium bronze ingots are not sufficiently broken down under the action of simple axial extrusion force, resulting in poor uniformity of the microstructure of the extruded rods and the presence of some coarse grains or insufficiently broken as-cast structures, which in turn affects the quality of the beryllium bronze rods. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the prior art and provide a high-yield beryllium bronze mold assembly with multiple extrusion holes, which allows beryllium bronze to be subjected to spiral shearing on the basis of axial extrusion, and a method for using the same.

[0005] To achieve the above objectives, the technical solution of the present invention is to provide a high-yield beryllium bronze mold assembly, comprising: An extruder, equipped with an extrusion shaft; An extrusion cylinder is slidably connected to the frame of the extruder, and a bearing hole is provided through the extrusion cylinder; A mold base is connected to the frame. A mold is detachably installed inside the mold base. The mold is provided with multiple extrusion holes, which are arranged in a circumferential array around the axis of the mold. The extrusion holes include threaded shearing holes and sizing holes arranged sequentially along the discharge direction. A drive unit is connected to the mold base, and the drive unit is driven to the extrusion cylinder.

[0006] Preferably, the threaded shearing holes include at least one set of alternating positive and negative threaded holes. This design is beneficial for further improving the quality of beryllium bronze bars.

[0007] Preferably, the extrusion orifice further includes a flared orifice and a constricted orifice, wherein the flared orifice, the thread shearing orifice, the constricted orifice, and the sizing orifice are arranged sequentially along the discharge direction, and the constricted orifice and the sizing orifice are connected by a rounded transition. This design helps to ensure the quality of the extruded beryllium bronze rod.

[0008] Preferably, the mold includes a feeding mold, a threading mold, and a discharging mold arranged sequentially along the discharge direction. The flaring hole is located in the feeding mold, the thread shearing hole is located in the threading mold, and the narrowing hole and the sizing hole are both located in the discharging mold. The feeding mold, the threading mold, and the discharging mold are detachably connected by bolts. This design helps reduce the maintenance cost of the mold.

[0009] Preferably, the threaded die includes a base and a threaded sleeve. The base has a through-hole, and the threaded sleeve is detachably connected to the through-hole. The positive thread hole and the negative thread hole are located on the threaded sleeve. This design helps reduce the maintenance cost of the threaded die.

[0010] Preferably, the mounting hole is a frustum-shaped hole, and the threaded sleeve is adapted to the mounting hole. This design facilitates the replacement of the threaded sleeve.

[0011] Preferably, the threaded shearing hole is configured as a tapered threaded hole, with its radial dimension gradually decreasing along the direction close to the discharge die. This design facilitates the separation of excess material from the die and allows for the reuse of the die.

[0012] Preferably, a motor is fixedly mounted on the mold base, and the output end of the motor drives a conversion disk. The conversion disk has multiple mounting slots arranged in a circumferential array around its own axis, and the mold is inserted into the mounting slots. This design facilitates mold replacement.

[0013] Preferably, the extruder further includes a slide and a drive component, the drive component being fixedly mounted on the frame and drivenly connected to the slide, and the extrusion shaft being fixedly mounted on the slide. This design allows for the formation of beryllium bronze rods of the desired size through extrusion molding.

[0014] A method for using a high-yield beryllium bronze mold assembly includes the following steps: S1. Place the beryllium bronze ingot and the extrusion pad into the extrusion cylinder; S2. The driving unit drives the extrusion cylinder to move until the extrusion cylinder abuts and fits against the mold. S3. The driving component pushes the extrusion shaft, the extrusion shaft pushes the beryllium bronze ingot, the extrusion shaft and the mold together extrude the beryllium bronze ingot, and the material of the beryllium bronze ingot passes through the extrusion hole to form a beryllium bronze rod; S4. After the high-yield beryllium bronze mold assembly is shut down, the remaining material in the extrusion hole is removed.

[0015] The beneficial effects of this invention are as follows: By using the high-yield beryllium bronze mold assembly and its method described in this invention, multiple beryllium bronze rods can be formed at once, significantly increasing the output of beryllium bronze rods per unit time. During the extrusion process, the beryllium bronze is forced to undergo spiral shear deformation on the basis of axial compression flow, which is beneficial to fully break the coarse cast grains in the beryllium bronze ingot and effectively weld internal defects such as micropores and porosity generated during the casting process, thereby refining the grain structure, improving the density and uniformity of the beryllium bronze rod, and greatly improving the mechanical properties and quality of the beryllium bronze rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-volume beryllium bronze mold assembly; Figure 2 This is a three-dimensional structural diagram of a high-volume beryllium bronze mold component; Figure 3 This is a three-dimensional structural diagram of the extrusion cylinder; Figure 4 This is a schematic diagram of the first three-dimensional structure of the mold; Figure 5 This is a schematic diagram of the second type of three-dimensional structure of the mold; Figure 6 This is a schematic front sectional view of the mold in Example 5; Figure 7 This is a three-dimensional structural diagram of the thread die corresponding to the positive thread hole; Figure 8 This is a schematic diagram of the three-dimensional structure of the substrate; Figure 9 This is a three-dimensional structural diagram of a threaded sleeve; Figure 10 This is a schematic diagram of the three-dimensional structure of the converter disk; Figure 11 This is a schematic diagram of the front sectional view of the mold in Example 6.

[0017] In the diagram: 1. Extrusion press; 11. Extrusion shaft; 12. Frame; 13. Slide; 14. Drive unit; 2. Extrusion cylinder; 21. Bearing hole; 3. Mold base; 31. Motor; 32. Converter plate; 321. Mounting slot; 4. Die; 40. Extrusion hole; 41. Thread shearing hole; 411. Positive thread hole; 412. Negative thread hole; 42. Sizing hole; 43. Flaring hole; 44. Reduction hole; 45. Equal diameter thread hole; 5. Drive unit; 61. Feeding die; 62. Threading die; 621. Base; 6211. Mounting hole; 6212. Positioning groove; 622. Threaded sleeve; 6221. Positioning block; 63. Discharge die. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0020] In the description of this application, the technical terms "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0021] In the description of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0022] In the description of this application, the term "multiple" means two or more, and similarly, "multiple sets" means two or more sets, and "multiple pieces" means two or more pieces, unless otherwise expressly and specifically defined.

[0023] In the description of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] In the description of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] In the description of this application, unless otherwise expressly specified and limited, the use of terms such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element; if an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Where applicable, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0027] To better understand this invention, the following is combined with... Figures 1-11 This invention provides a detailed description of a high-yield beryllium bronze mold assembly and its method of use.

[0028] Example 1: like Figures 1-6 As shown, a high-yield beryllium bronze mold assembly includes: Extruder 1 is equipped with an extrusion shaft 11; The extrusion cylinder 2 is slidably connected to the frame 12 of the extruder 1, and the extrusion cylinder 2 is provided with a bearing hole 21 through it; The mold base 3 is connected to the frame 12. The mold 4 is detachably installed in the mold base 3. The mold 4 is provided with multiple extrusion holes 40. The multiple extrusion holes 40 are arranged in a circumferential array around the axis of the mold 4. The extrusion holes 40 include thread shearing holes 41 and sizing holes 42 arranged sequentially along the discharge direction. The drive unit 5 is connected to the mold base 3 and is driven to the extrusion cylinder 2.

[0029] It should be noted that the drive unit 5 can be configured as a cylinder. Before the extrusion operation, the ingot is preheated by an intermediate frequency furnace. Then, the extrusion pad and the preheated ingot are placed into the bearing hole 21, and the ingot is located between the mold 4 and the extrusion pad. During the extrusion operation, the drive unit 5 drives the extrusion cylinder 2 to move closer to the mold 4 until the extrusion cylinder 2 and the mold 4 come into contact and fit together. Then, the extruder 1 drives the extrusion shaft 11 to move closer to the extrusion cylinder 2. The extrusion shaft 11 extends into the bearing hole 21 to push the extrusion pad. The extrusion pad applies extrusion pressure to the heated beryllium bronze ingot. Under the combined extrusion action of the extrusion pad and the mold 4, the beryllium bronze ingot is extruded from multiple extrusion holes 40 of the mold 4 at the same time. Multiple beryllium bronze rods can be formed at one time, which significantly improves the output of beryllium bronze rods per unit time. The method of placing the ingot and extrusion pad into the bearing hole 21 is existing technology and will not be described in detail here. For details, please refer to the video link: https: / / v.douyin.com / zOyGvm08lkk / R@K.wS :8pm 02 / 08 EuS: / ; By designing multiple extrusion holes 40 arranged in a circumferential array around the axis of the mold 4, the flow of extruded beryllium bronze can be made more balanced, and the extrusion pressure is evenly distributed on the end face of the mold 4, which effectively avoids the mold 4 bearing unbalanced load, reduces abnormal wear of the mold 4, and helps to extend the service life of the mold 4. At the same time, the beryllium bronze rods extruded from each extrusion hole 40 have good consistency in structure and size, and the product quality is stable. In addition, the multiple extrusion holes 40 are equivalent to increasing the total cross-sectional area of ​​the extrusion port and reducing the extrusion ratio. Therefore, under the same extrusion shaft 11 diameter and ingot specifications, the required extrusion pressure is smaller, which reduces the extrusion pressure requirement of the extruder 1. In each extrusion hole 40, beryllium bronze first enters the threaded shear hole 41. The inner wall of the threaded shear hole 41 has a spiral groove that forces the beryllium bronze to flow along a spiral path. The beryllium bronze is forced to undergo spiral shear deformation on the basis of axial compression flow, which is beneficial to fully break up the coarse cast grains in the beryllium bronze ingot and effectively weld the internal defects such as micropores and porosity generated during the casting process of the ingot. This refines the grain structure, improves the density and uniformity of the beryllium bronze rod, and greatly improves the mechanical properties and quality of the beryllium bronze rod.

[0030] It should be emphasized that the lead angle θ of the thread shearing hole 41 is in the range of 20°-30°, and the friction coefficient μ of the inner wall of the thread shearing hole 41 satisfies tanθ>2μ, thereby ensuring that during the process of the material of the beryllium bronze ingot being squeezed into the extrusion hole 40, the material will flow along the extension direction of the thread groove of the thread shearing hole 41, and will not fill the thread groove; the lead angle of the thread shearing hole 41 refers to the angle between the tangent of the helix on the mean diameter cylinder of the thread shearing hole 41 and the plane perpendicular to the thread axis.

[0031] Specifically, the inner wall of the threaded shearing hole 41 is improved by plasma carburizing to enhance the substrate bearing capacity, and aluminum-titanium-nitrogen is deposited by PVD to reduce the friction coefficient of the inner wall of the threaded shearing hole 41, thereby ensuring that the requirements are met.

[0032] Example 2: As an optimization of Example 1, such as Figure 1 , Figure 2 and Figure 10 As shown, a motor 31 is fixedly installed on the mold base 3. The output end of the motor 31 drives the conversion disk 32. The conversion disk 32 has multiple mounting slots 321 arranged in a circular array around its own axis. The mold 4 is inserted into the mounting slots 321.

[0033] It should be noted that when the high-volume beryllium bronze mold assembly is shut down for longer than the preset time, the beryllium bronze material inside the mold 4 will cool and harden, which will affect the extrusion molding of the beryllium bronze rod. By setting multiple mounting slots 321, each mounting slot 321 is equipped with a mold 4. When production stops at night, the motor 31 drives the conversion plate to rotate, rotating the new mold 4 to the extrusion station, thereby quickly completing the replacement of the mold 4 to facilitate the production of beryllium bronze rods the next day.

[0034] It should be emphasized that under the action of extrusion pressure, the friction between the die 4 and the inner wall of the mounting groove 321 is extremely large. Therefore, during the extrusion process, the die 4 will not rotate relative to the conversion plate 32.

[0035] Example 3: As an optimization of Example 2, such as Figure 1 and Figure 2As shown, the extruder 1 also includes a slide 13 and a drive component 14. The drive component 14 is fixedly mounted on the frame 12 and is drivenly connected to the slide 13. The extrusion shaft 11 is fixedly mounted on the slide 13.

[0036] It should be noted that the driving component 14 is a hydraulic cylinder. The driving component 14 drives the slide block 13 and the extrusion shaft 11 to move closer to the extrusion cylinder 2. Through the extrusion shaft 11 and the mold 4, the beryllium bronze ingot in the extrusion cylinder 2 is extruded into the extrusion hole 40 and extruded from the sizing hole 42 of the extrusion hole 40 to form a beryllium bronze rod of the required size.

[0037] Example 4: As an optimization of Example 3, such as Figures 4-6 As shown, the thread shearing hole 41 includes at least one set of alternating positive thread holes 411 and negative thread holes 412; the extrusion hole 40 also includes a flared hole 43 and a constricted hole 44. The flared hole 43, the thread shearing hole 41, the constricted hole 44 and the sizing hole 42 are arranged sequentially along the discharge direction, and the constricted hole 44 and the sizing hole 42 are connected by a rounded transition.

[0038] It should be noted that by setting the positive thread hole 411 and the negative thread hole 412, when the ingot material flows in the thread shear hole 41, it will experience alternating helical shearing in both clockwise and counterclockwise directions. This bidirectional shearing causes the ingot material to undergo more intense and complex plastic deformation, which is conducive to more thoroughly breaking the as-cast structure. It is also conducive to eliminating the deformation texture (i.e., the grain preferential orientation phenomenon caused by unidirectional plastic flow) and residual stress formed by the grains inside the material aligning in a specific direction during unidirectional shearing. This improves the straightness and isotropic structure of the beryllium bronze rod, and further improves the product quality. The smaller end of the flared hole 43 can be connected to the threaded shearing hole 41 through a short straight hole, and the flared hole 43 and the short straight hole are also connected by a rounded transition. Setting the flared hole 43 is conducive to guiding the beryllium bronze ingot to flow smoothly into the extrusion hole 40 and avoid the formation of a flow dead zone at the inlet. When the beryllium bronze passes through the gradually narrowing flared hole 43 and narrowing hole 44 in sequence, the die hole exerts a continuous compression and shearing effect on the metal, further improving the uniformity of the structure. Furthermore, the adjacent structural holes of the threaded shearing hole 41 (including the flared hole 43, the threaded shearing hole 41, the narrowing hole 44 and the sizing hole 42) are preferably connected by a rounded transition, thereby avoiding stress concentration and cracking risk caused by sharp edges, promoting the filling of all areas of the threaded shearing hole 41 with ingot material, eliminating void defects, and ensuring the surface quality and dimensional accuracy of the formed bar.

[0039] It should be emphasized that both the positive thread hole 411 and the negative thread hole 412 are designed as multi-start thread holes to ensure that the pitch of the thread shearing hole 41 is appropriate. Thus, within a limited space, during the extrusion process, the thread shearing hole 41 can perform sufficient torsional shearing on the ingot material, and the lead angle of the thread shearing hole 41 meets the design requirements.

[0040] Example 5: As an optimization of Example 4, such as Figures 4-9 As shown, the mold 4 includes a feeding mold 61, a threading mold 62 and a discharging mold 63 arranged sequentially along the discharge direction. The flaring hole 43 is provided in the feeding mold 61, the thread shearing hole 41 is provided in the threading mold 62, and the narrowing hole 44 and the sizing hole 42 are both provided in the discharging mold 63. The feeding mold 61, the threading mold 62 and the discharging mold 63 are detachably connected by bolts. The threaded die 62 includes a base 621 and a threaded sleeve 622. The base 621 has a through mounting hole 6211. The threaded sleeve 622 is detachably connected to the mounting hole 6211. A positive threaded hole 411 and a negative threaded hole 412 are provided on the threaded sleeve 622. Mounting hole 6211 is set as a frustum hole, and threaded sleeve 622 is adapted to mounting hole 6211; The thread shearing hole 41 is set as a tapered thread hole, and the radial dimension of the thread shearing hole 41 gradually decreases along the direction close to the discharge die 63.

[0041] It should be noted that the positive thread hole 411, the negative thread hole 412, and the threaded sleeve 622 are coaxially arranged. By designing the mold 4 in segments, the vulnerable parts, especially the thread shearing hole 41, are concentrated on the independent thread mold 62. Once wear or damage occurs, only the corresponding mold segment needs to be replaced, instead of replacing the entire mold 4, which significantly reduces the maintenance and replacement cost of the mold 4. Furthermore, the thread mold 62 includes at least two thread hole molds arranged sequentially along its own axis. Each thread hole mold is provided with a positive thread hole 411 or a negative thread hole 412, and each thread hole mold includes a base 621 and a corresponding number of threaded sleeves 622. This allows for the individual replacement of a thread hole mold based on the damage of the thread hole, further reducing the maintenance cost of the mold 4, and also reduces the overall processing difficulty of the thread shearing hole 41 with positive and negative thread holes, which is beneficial to the production and manufacturing of the thread mold 62. The threaded sleeve 622 is inserted into the mounting hole 6211 of the base 621. By setting the threaded sleeve 622, when the thread shearing hole 41 is damaged, only the damaged threaded sleeve 622 needs to be replaced, without replacing the entire thread die 62 or the thread hole die, which helps to reduce the maintenance cost of the thread die 62.

[0042] When mold 4 stops production, some residual material remains in the extrusion hole 40. Due to the design of the constriction hole 44 and sizing hole 42 of the feed mold, after removing the bolts, the discharge mold 63 can be removed first in the direction away from the feed mold, and then the base 621 corresponding to the positive thread hole 411 can be removed. Then, the threaded sleeve 622 with the positive thread hole 411 can be unscrewed. After that, the base 621 and threaded sleeve 622 corresponding to the negative thread hole 412 can be removed in the same way. Finally, the residual material can be separated from the feed mold 61. The disassembly is convenient and facilitates the separation of the residual material from the mold 4 and the reuse of the mold 4.

[0043] When replacing the threaded sleeve 622, the threaded sleeve 622 is filled with beryllium bronze residue, and the beryllium bronze residue in the threaded sleeve 622 is in a compressed state. The beryllium bronze residue exerts radial extrusion force on the threaded sleeve 622, causing the threaded sleeve 622 to expand. By designing the mounting hole 6211 as a frustum hole, as long as the threaded sleeve 622 slightly separates from the screw hole mold along the axial direction, a gap is formed between the outer surface of the threaded sleeve 622 and the inner wall of the mounting hole 6211 of the screw hole mold, the friction between the threaded sleeve 622 and the screw hole mold will be significantly reduced, which makes it easier to disassemble and replace the threaded sleeve 622. In addition, during the extrusion process, the flow of beryllium bronze material in the threaded hole will generate a thrust in the discharge direction on the threaded sleeve 622. This thrust will cause a wedging effect between the threaded sleeve 622 and the mounting hole 6211 of the base 621, which will become tighter and tighter as it is pressed. This will effectively prevent the threaded sleeve 622 from loosening or coming off under high pressure, and ensure the stability and reliability of the mold 4 for long-term use. If the mounting hole 6211 is set as a cylindrical hole, the expansion of the threaded sleeve 622 will cause a large friction between the threaded sleeve 622 and the inner wall of the mounting hole 6211. The threaded sleeve 622 will get stuck in the mounting hole 6211, making it difficult to remove. Forcibly removing it will easily damage the base 621, and replacing the threaded sleeve 622 will be difficult.

[0044] In this embodiment, a positioning block 6221 is fixedly connected to the outer ring of the threaded sleeve 622, and a positioning groove 6212 is provided on the base 621 to be inserted into the positioning block 6221, and the positioning groove 6212 communicates with the mounting hole 6211. Through the cooperation of the positioning block 6221 and the positioning groove 6212, the stability of the connection between the threaded sleeve 622 and the base 621 can be improved, and the threaded sleeve 622 can be prevented from rotating in the mounting hole 6211 during the extrusion process, which would affect the shearing effect on the ingot material. Moreover, the threaded sleeve 622 and the base 621 will not rotate relative to each other, which is beneficial to reduce the wear of the threaded sleeve 622 and the base 621 and extend the service life of the threaded sleeve 622 and the base 621.

[0045] A method for using a high-yield beryllium bronze mold assembly, employing the high-yield beryllium bronze mold assembly of Example 5, includes the following steps: S1. Place the beryllium bronze ingot and the extrusion pad into the extrusion cylinder 2; S2. The drive unit 5 drives the extrusion cylinder 2 to move until the extrusion cylinder 2 and the mold 4 come into contact and fit together. S3, the driving component 14 pushes the extrusion shaft 11, the extrusion shaft 11 pushes the beryllium bronze ingot, the extrusion shaft 11 and the mold 4 together extrude the beryllium bronze ingot, and the material of the beryllium bronze ingot passes through the extrusion hole 40 to form a beryllium bronze rod; S4. After the high-yield beryllium bronze mold assembly is shut down, remove the remaining material from the extrusion hole 40.

[0046] It should be noted that S4 includes the following steps: S41. Remove the bolts; S42. Remove the discharge mold 63; S43. Remove the base 621 and threaded sleeve 622 corresponding to the positive threaded hole 411 in sequence; S44. Remove the base 621 and threaded sleeve 622 corresponding to the reverse threaded hole 412 in sequence; S45. Remove the remaining material from the feed mold 61; S46. Assemble mold 4 in the reverse order of S41-S44.

[0047] Example 6: As an optimization of Example 3, such as Figure 11 As shown, the thread shearing hole 41 is configured as a forward threaded hole or a reverse threaded hole, and the extrusion hole 40 also includes a flared hole 43 and a constricted hole 44. The flared hole 43, the thread shearing hole 41, the constricted hole 44 and the sizing hole 42 are arranged sequentially along the discharge direction, and the constricted hole 44 and the sizing hole 42 are transitioned by rounded corners. The mold 4 includes a feeding mold 61, a threading mold 62 and a discharging mold 63 arranged sequentially along the discharge direction. The flaring hole 43 is provided in the feeding mold 61, the thread shearing hole 41 is provided in the threading mold 62, and the narrowing hole 44 and the sizing hole 42 are both provided in the discharging mold 63. The feeding mold 61, the threading mold 62 and the discharging mold 63 are detachably connected by bolts. The threaded die 62 includes a base 621 and a threaded sleeve 622. The base 621 has a through mounting hole 6211, and the threaded sleeve 622 is detachably connected to the mounting hole 6211. Along the discharge direction, multiple sets of threaded dies 62 are provided. The feeding die 61, multiple sets of threaded dies 62 and the discharge die 63 are connected in sequence by bolts. The mounting hole 6211 is set as a frustum hole, and the threaded sleeve 622 is adapted to the mounting hole 6211. The threaded sleeve 622 has an equal diameter threaded hole 45. The number of threads in each equal diameter threaded hole 45 is an integer number of turns. Multiple threaded sleeves 622 are spliced ​​together to form a thread shearing hole 41, which includes multiple equal diameter threaded holes 45. The equal diameter threaded hole 45 is configured as a multi-start threaded hole. The outer ring of the threaded sleeve 622 is fixedly connected to the positioning block 6221. The base 621 has a positioning groove 6212 that is inserted into the positioning block 6221, and the positioning groove 6212 is connected to the mounting hole 6211.

[0048] It should be noted that the threaded sleeve 622 is inserted into the mounting hole 6211. When the mold 4 stops production, some of the remaining material stays in the extrusion hole 40. Due to the design of the constriction hole 44 and the sizing hole 42 of the feed mold, after the bolt is removed, the discharge mold 63 can be removed first along the direction away from the feed mold. Then, the base 621 corresponding to the equal diameter threaded hole 45 farthest from the discharge mold 63 can be removed. Then, the corresponding threaded sleeve 622 can be unscrewed. After that, the base 621 and threaded sleeve 622 of the remaining thread molds 62 can be removed in the same way. Finally, the remaining material can be separated from the feed mold 61. The disassembly is convenient and facilitates the separation of the remaining material from the mold 4 and the reuse of the mold 4. Furthermore, during the extrusion molding of beryllium bronze rods, the multi-head equal-diameter threaded hole 45 near the feed end experiences the greatest extrusion force, making the threaded portion more susceptible to damage. Since the threaded sleeve 622 is detachable from the base 621, each time the mold 4 is reassembled, by changing the position of the threaded sleeve 622, the threaded sleeve 622 that was originally furthest from the feed mold 61 is moved to the position closest to the feed mold 61, and the other threaded molds 62 are arranged in the original order after the moved threaded mold 62, which can greatly improve the service life of the mold and reduce maintenance costs.

[0049] A method for using a high-yield beryllium bronze mold assembly, employing the high-yield beryllium bronze mold assembly of Example 6, includes the following steps: S1. Place the beryllium bronze ingot and the extrusion pad into the extrusion cylinder 2; S2. The drive unit 5 drives the extrusion cylinder 2 to move until the extrusion cylinder 2 and the mold 4 come into contact and fit together. S3, the driving component 14 pushes the extrusion shaft 11, the extrusion shaft 11 pushes the beryllium bronze ingot, the extrusion shaft 11 and the mold 4 together extrude the beryllium bronze ingot, and the beryllium bronze ingot forms a beryllium bronze rod through the extrusion hole 40; S4. After the high-yield beryllium bronze mold assembly is shut down, remove the remaining material from the extrusion hole 40.

[0050] It should be noted that S4 includes the following steps: S41. Remove the bolts; S42. Remove the discharge mold 63; S43. Remove all thread dies 62 in sequence along the direction closest to the feed die 61; S44. Remove the remaining material from the feed mold 61; S45. The threaded sleeve 622, which was originally furthest from the feed mold 61, is moved to the position closest to the feed mold 61. The other threaded molds 62 are arranged in their original order after the moved threaded molds 62. The feed mold 61, the rearranged sets of threaded molds 62, and the discharge mold 63 are assembled together in sequence by bolts.

[0051] The embodiments of the invention have been described above with reference to the accompanying drawings. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments without departing from the spirit of the embodiments and the scope of protection of the claims, and all of these forms are within the protection scope of the embodiments.

Claims

1. A high-yield beryllium bronze mold assembly, characterized in that, include: The extruder (1) is equipped with an extrusion shaft (11). The extrusion cylinder (2) is slidably connected to the frame (12) of the extruder (1), and the extrusion cylinder (2) is provided with a bearing hole (21) through it. A mold base (3) is connected to the frame (12). A mold (4) is detachably installed in the mold base (3). The mold (4) is provided with a plurality of extrusion holes (40). The plurality of extrusion holes (40) are arranged in a circumferential array around the axis of the mold (4). The extrusion holes (40) include thread shearing holes (41) and sizing holes (42) arranged sequentially along the discharge direction. The drive unit (5) is connected to the mold base (3), and the drive unit (5) is driven to connect with the extrusion cylinder (2).

2. The beryllium bronze high-yield mold assembly according to claim 1, characterized in that, The threaded shearing hole (41) includes at least one set of alternating positive threaded holes (411) and negative threaded holes (412).

3. The beryllium bronze high-yield mold assembly according to claim 2, characterized in that, The extrusion hole (40) also includes a flared hole (43) and a constricted hole (44). The flared hole (43), the thread shearing hole (41), the constricted hole (44) and the sizing hole (42) are arranged sequentially along the discharge direction. The constricted hole (44) and the sizing hole (42) are connected by a rounded transition.

4. The beryllium bronze high-yield mold assembly according to claim 3, characterized in that, The mold (4) includes a feeding mold (61), a threading mold (62) and a discharging mold (63) arranged sequentially along the discharge direction. The flaring hole (43) is provided in the feeding mold (61), the thread shearing hole (41) is provided in the threading mold (62), and the narrowing hole (44) and the sizing hole (42) are both provided in the discharging mold (63). The feeding mold (61), the threading mold (62) and the discharging mold (63) are detachably connected by bolts.

5. A high-yield beryllium bronze mold assembly according to claim 4, characterized in that, The threaded die (62) includes a base (621) and a threaded sleeve (622). The base (621) has a through mounting hole (6211). The threaded sleeve (622) is detachably connected to the mounting hole (6211). The positive thread hole (411) and the negative thread hole (412) are provided on the threaded sleeve (622).

6. A high-yield beryllium bronze mold assembly according to claim 5, characterized in that, The mounting hole (6211) is configured as a frustum hole, and the threaded sleeve (622) is adapted to the mounting hole (6211).

7. A high-yield beryllium bronze mold assembly according to claim 2, characterized in that, The threaded shearing hole (41) is configured as a tapered threaded hole, and the radial dimension of the threaded shearing hole (41) gradually decreases along the direction close to the discharge die (63).

8. A high-yield beryllium bronze mold assembly according to claim 1, characterized in that, A motor (31) is fixedly installed on the mold base (3). The output end of the motor (31) drives a conversion disk (32). The conversion disk (32) has multiple mounting slots (321) arranged in a circular array around its own axis. The mold (4) is inserted into the mounting slot (321).

9. A high-yield beryllium bronze mold assembly according to claim 1, characterized in that, The extruder (1) further includes a slide (13) and a drive (14). The drive (14) is fixedly mounted on the frame (12). The drive (14) is drivenly connected to the slide (13). The extrusion shaft (11) is fixedly mounted on the slide (13).

10. A method of using a high-yield beryllium bronze mold assembly, comprising using the high-yield beryllium bronze mold assembly as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Place the beryllium bronze ingot and the extrusion pad into the extrusion cylinder (2); S2. The driving unit (5) drives the extrusion cylinder (2) to move until the extrusion cylinder (2) abuts and fits against the mold (4); S3. The driving component (14) pushes the extrusion shaft (11), the extrusion shaft (11) pushes the beryllium bronze ingot, the extrusion shaft (11) and the mold (4) together extrude the beryllium bronze ingot, and the material of the beryllium bronze ingot passes through the extrusion hole (40) to form a beryllium bronze rod; S4. After the high-yield beryllium bronze mold (4) assembly is shut down, the remaining material in the extrusion hole (40) is removed.

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