Male head inlaying process of mold

Abstract

The invention relates to a male head inlaying process of a die, which belongs to the technical field of die manufacturing, and comprises the following steps: S1, material preparation and cutting: cutting a prepared blank block according to the structure complexity of the die, and separating the part with the complex structure from a main body to form at least three rough blank blocks; s2, rough machining is conducted on the rough blank blocks, specifically, the three rough blank blocks are conveyed to corresponding machining equipment to be punched and forged to form initial blank blocks; s3, finish machining is conducted on the primary blank blocks, specifically, finish machining is conducted on the three primary blank blocks in different machining devices at the same time to form finish blank blocks; s4, embedding the three fine blank blocks, wherein the three fine blank blocks are an upper die male head block, a nut block and a screw male block respectively; and S402, the male screw block and the upper mold male head block are assembled in a hot inlaying mode. According to the mold, the mold which is integrally formed and is complex in structure can be simplified, the service life of the mold is prolonged, and the machining precision of a product is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mold manufacturing, and in particular relates to a male head embedding process of a mold. Background Art

[0002] The existing mold production process usually includes the following steps: mold design - material preparation - rough machining and fine machining - heat treatment - surface treatment and other processes. It can be seen that the mold is continuously processed and formed in a piece of metal block. Usually, the structure on the mold is a whole. For some products with more complex structures, the structure of the mold will also be more complex, which will lead to different structural strengths on the mold surface.

[0003] During the use of the mold, thousands of tons of extrusion pressure is applied simultaneously in the direction of the male head and the outer circle, and the extrusion pressure in the outer circle direction is divided into the front, back, left and right directions. At the same time, the extrusion pressures from multiple directions act on the upper mold, and pull each other to produce a strong shear force. In addition, for the one-piece mold, the upper mold bridge root is under the strongest pressure, but it is often the part with relatively weak expansion strength. When the upper mold bridge root cannot withstand the pressure from all aspects, the bridge breaks or cracks.

[0004] Therefore, the molds for extruding aluminum alloys are more prone to cracking or breaking during the production process. Ordinary molds can only produce 3 tons at most, and some even crack after only producing a few hundred kilograms, so the production cost is very high.

[0005] Generally, when the above problems occur in complex upper mold foreman, the mold cannot be repaired, or after repair, it cannot achieve the required accuracy and service life. Generally, it will be scrapped directly, causing great losses. However, the production cost of a single mold is extremely high. Usually, the cost of a mold ranges from tens of thousands to hundreds of thousands. The directly scrapped mold leads to an increase in the production cost of the product, resulting in high mold production cost and short service life.

[0006] Therefore, there is an urgent need for a manufacturing process that can improve the service life of the mold. Summary of the invention

[0007] In order to solve the above problems existing in the prior art, the present invention provides a male head inlay process for a mold, which solves the problem that the male head of the upper mold of the existing one-piece mold is prone to cracking when producing products, and the cost of replacing the damaged mold is high.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A male head inlay process of a mold comprises the following steps:

[0010] S1: Material preparation and cutting: according to the structure of the mold, the prepared blank block is cut according to the complexity of the structure, and the complex structure part is separated from the main body to form at least three rough blank blocks;

[0011] S2: rough processing of the rough blank: transporting the three rough blanks to corresponding processing equipment for stamping and forging to form preliminary blanks;

[0012] S3: performing fine processing on the preform blocks: performing fine processing on three preform blocks simultaneously in different processing equipment to form fine blocks;

[0013] S4: inlaying three of the refined blank blocks: the three refined blank blocks are an upper die male block, a nut block and a screw male block;

[0014] S401: Thread assembly of the nut block and the upper die male block:

[0015] S402: The screw male block and the upper die male head block are assembled by hot-inserting.

[0016] Preferably, the upper mold male head block includes a solid part and a core part; there are a plurality of mold cavities between the solid part and the core part, and bridges are provided between the mold cavities and spaced by the bridges, one end of the bridge is connected to the solid part, and the other end is connected to the core part.

[0017] Preferably, S401 further includes the following steps:

[0018] S4011: Roughly machining a connection between any one of the connecting bridges and the solid portion to form a first male head;

[0019] S4012: Fine-processing the first male head, processing a first mounting groove at the top center of the first male head, wherein the first mounting groove has threads for threaded connection with the nut block.

[0020] Preferably, an elastic groove is further provided at the bottom of the first embedding groove, and a stress pad is filled in the elastic groove, and the stress pad abuts against the nut block.

[0021] Preferably, the ratio of the diameter of the stress pad to the diameter of the nut block is 1:2.

[0022] Preferably, the fine processing of the first male head in S4012 also includes processing the portion where the first male head is connected to the connecting bridge and the core portion into a smooth curved surface.

[0023] Preferably, from the connecting bridge to the nut block, the first male head is shaped like a column that gradually becomes smaller.

[0024] Preferably, the vertical overlap between the first male head and the connecting bridge is at least 8 mm.

[0025] Preferably, a diverter hole is processed at the center of the upper die male block, and the diverter hole is used for inlaying with the screw male block, and S402 further includes the following steps:

[0026] S4021: Preheating, preheating the screw block and the diversion hole;

[0027] S4022: Applying an inlay coating: applying an inlay coating on the contact surface of the screw block and the diversion hole;

[0028] S4023: heating and inlaying, placing the screw male block coated with the inlay coating and the diversion hole together into a heating device for heating treatment;

[0029] S4024: Cooling and solidifying, cooling the embedded screw head and upper die male head block naturally to solidify the embedded coating.

[0030] Preferably, the material of the blank block is hard aluminum alloy.

[0031] The beneficial effects of the present invention are:

[0032] The mold inlay process in the present application can simplify the one-piece and complex structure of the upper mold male head, and process the complex structural parts of the mold separately, and then inlay them into a main body after the processing is completed. In this way, even if local damage occurs during the use of the mold, only the damaged part needs to be replaced without replacing the entire mold, which greatly improves the service life of the mold and the processing accuracy of the product, increases production capacity and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0034] Figure 1 A flowchart of a male head embedding process of a mold provided in one embodiment of the present invention;

[0035] Figure 2 A schematic diagram of a top view of a mold provided in one embodiment of the present invention;

[0036] Figure 3 A schematic diagram of a side view of a mold provided in one embodiment of the present invention;

[0037] Figure 4 A schematic diagram of a first male head embedding structure provided in one embodiment of the present invention;

[0038] Legend: 1. Upper mold male head block; 11. Solid part; 12. Core part; 13. Mold cavity; 14. Bridge; 2. Nut block; 3. Screw male block; 4. First male head; 41. First mounting groove; 42. Elastic groove; 5. Stress pad; 6. Diverter hole. DETAILED DESCRIPTION

[0039] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0040] like Figure 1-Figure 4 As shown, a male head inlay process of a mold includes the following steps:

[0041] S1: Material preparation and cutting: according to the structure of the mold, the prepared blank block is cut according to the complexity of the structure, and the complex structure part is separated from the main body to form at least three rough blank blocks;

[0042] S2: rough processing of the rough blank: transporting the three rough blanks to corresponding processing equipment for stamping and forging to form preliminary blanks;

[0043] S3: finishing the green blocks: finishing the three green blocks on different processing equipment at the same time to form finished green blocks;

[0044] S4: inlaying three refined blanks: the three refined blanks are upper die male block 1, nut block 2 and screw male block 3;

[0045] S401: Thread assembly of nut block 2 and upper die male block 1:

[0046] S402: The screw male block 3 and the upper die male head block 1 are assembled by hot-inserting.

[0047] In one embodiment, the upper mold male head block 1 includes a solid part 11 and a core part 12; there are a plurality of mold cavities 13 between the solid part 11 and the core part 12, and the mold cavities 13 are separated by bridges 14, one end of the bridge 14 is connected to the solid part 11, and the other end is connected to the core part 12.

[0048] First, in the material preparation and cutting step (S1), a hard aluminum alloy blank block that meets the production requirements is selected. The material selection is based on its high strength, corrosion resistance and good machinability. According to the specifications and dimensions of the design drawings, the blank block is cut into three rough blank blocks. Subsequently, in the rough processing step (S2), the three rough blank blocks obtained by the above cutting are transported to the punching machine and forging equipment respectively. In the fine processing step (S3), the three rough blank blocks are fixed on high-precision CNC machine tools for processing. Different equipment performs fine processing according to the characteristics of their respective rough blank blocks, including precise cutting, surface polishing and aperture processing, so that the surface finish and dimensional accuracy meet the design requirements. Through this fine processing process, fine blank blocks corresponding to the functional components of the mold are formed, namely, the upper mold male block 1, the nut block 2 and the screw male block 3.

[0049] Next, in the assembly step (S4), the three refined blanks are assembled in sequence, wherein the upper mold male block 1 includes a solid part 11 and a core part 12, which are separated by a number of mold cavities 13 and connected by a bridge 14. The bridge 14 is designed to transfer and support stress between the solid part 11 and the core part 12. The number and distribution of the bridge 14 are determined based on the optimization of the mold force analysis, which not only avoids the bridge breaking caused by force concentration, but also ensures the integrity and stability of the mold cavity 13 structure. In step S401, the nut block 2 is fixed to the upper mold male block 1 by threaded connection. The threaded connection part is processed by a high-precision thread milling machine to ensure the size matching and sealing performance of the thread;

[0050] In step S402, the screw male block 3 and the upper mold male block 1 are fixed by a hot embedding process. First, the screw male block 3 and the shunt hole 6 at the center of the upper mold male block 1 are preheated to 250°C to 300°C to eliminate the residual stress in the material. Then, a layer of embedding coating is evenly coated on the contact surface between the screw male block 3 and the shunt hole 6. The coating material is a high-temperature ceramic-based composite material with excellent wear resistance and shear resistance. Subsequently, the screw male block 3 and the shunt hole 6 coated with the coating are placed in a heating device as a whole, and the heating temperature is controlled at 500°C to 550°C to ensure full fusion between the coating and the substrate. Finally, the embedded mold is solidified by natural cooling to form a firm and durable joint.

[0051] In summary, the mold inlay process in the present application can simplify an integrally formed mold with a complex structure, and process the complex structural parts of the mold separately, and then inlay them into a main body after processing. In this way, even if local damage occurs during the use of the mold, only the damaged part needs to be replaced without replacing the entire mold, which greatly improves the service life of the mold and the processing accuracy of the product, increases production capacity and reduces costs.

[0052] In one embodiment, S401 further includes the following steps:

[0053] S4011: Roughly process a first male head 4 at a connection point between any connecting bridge 14 and the solid portion 11;

[0054] S4012: finely process the first male head 4 and form a first embedding groove 41 at the top center of the first male head 4. The first embedding groove 41 has threads for threaded connection with the nut block 2.

[0055] In step S4011, the specific processing position of the connection between the bridge 14 and the solid part 11 is first determined. The position selection is based on the force analysis of the mold structure design to ensure that the first male head 4 is in the position with the best mechanical performance, and to avoid structural failure due to uneven force during the use of the mold. The mold is fixed to a multi-axis CNC machining center, and the connection area is cut by a rough machining tool to gradually form the rough shape of the first male head 4. During the machining process, the cutting parameters are strictly calculated and optimized to ensure the smoothness of the machined surface and avoid material stress concentration or surface hardening due to excessive cutting. After the rough machining is completed;

[0056] In step S4012, the first male head 4 is fine-machined to meet the final assembly requirements. First, the rough-machined first male head 4 is transferred to a high-precision CNC lathe, and its surface is further processed using a micro-cutting tool to ensure that the shape and size of the first male head 4 meet the design standards. Subsequently, the center position of the top of the first male head 4 is precisely positioned, and a first inlay groove 41 with threads is machined using a thread milling machine. In addition, in order to further improve the reliability of the threaded connection, the first inlay groove 41 adopts a multiple-feed method during the processing process, that is, the target depth is reached by stepwise cutting to avoid thread deformation or precision deviation caused by a single excessively deep cutting; at the same time, in order to ensure the sealing performance after the thread is connected to the nut block 2, a guide bevel is machined at the bottom of the first inlay groove 41 to improve the thread fit stability and bonding strength.

[0057] Through the above steps, this embodiment not only ensures the mechanical properties and processing accuracy of the first male head 4 in the mold structure, but also achieves a high-strength and reliable connection between the first male head 4 and the nut block 2 through high-quality thread processing, thereby providing a strong guarantee for the overall performance of the mold.

[0058] In one embodiment, an elastic groove 42 is further provided at the bottom of the inlay groove, and a stress pad 5 is filled in the elastic groove 42. The stress pad 5 abuts against the nut block 2. The design of the elastic groove 42 needs to take into account the stress characteristics and material characteristics in the mold use scenario. The shape of the elastic groove 42 is processed into an annular groove, and its depth and width are optimized through mechanical simulation analysis to ensure that it can accommodate the stress pad 5 without affecting the mold strength due to the excessive thinness of the groove wall. After processing, a three-dimensional measuring instrument is used to detect the depth and width of the groove body to ensure that the error with the design size is controlled within ±0.01mm. The material of the stress pad 5 is a high-temperature resistant elastic polymer with excellent compression resistance and stress buffering characteristics. When filling the stress pad 5, the stress pad 5 needs to be cut according to the diameter of the nut block 2 and the design parameters of the elastic groove 42 to ensure that it is completely embedded in the elastic groove 42 and fits tightly to the groove wall.

[0059] A thin layer of adhesive is applied between the stress pad 5 and the elastic groove 42 using a quantitative glue coating device to enhance the bonding strength between the two and avoid displacement of the stress pad 5 due to vibration or high-frequency load during use. During the assembly process, the stress pad 5 directly contacts the nut block 2, thereby achieving a buffering and dispersing effect on the pressure transmitted by the nut block 2. Especially when the mold is subjected to high-intensity multi-directional extrusion pressure, the stress pad 5 can effectively absorb and disperse the concentrated stress at the threaded connection, reducing the risk of damage to the mold structure due to local force. At the same time, the elastic properties of the stress pad 5 allow it to quickly return to its original state when subjected to an impact load, thereby improving the overall impact resistance of the mold.

[0060] In one embodiment, the ratio of the diameter of the stress pad 5 to the diameter of the nut block 2 is 1:2, and the size of the stress pad 5 is determined according to the diameter of the nut block 2. For example, when the diameter of the nut block 2 is 20 mm, the diameter of the stress pad 5 is designed to be 10 mm. This proportional design enables the stress pad 5 to completely cover the key stress-bearing area at the bottom of the thread, while avoiding the connection performance being affected by being too large or too small. The stress pad 5 has excellent resistance to permanent compression deformation and high temperature resistance, and can maintain good elastic recovery ability within the operating temperature range of the mold. The stress pad 5 is manufactured using high-precision molding technology to ensure that its diameter tolerance is controlled within ±0.05 mm, and the surface is smooth and burr-free, thereby achieving a gap-free fit with the elastic groove 42.

[0061] During the installation process, the stress pad 5 is slowly embedded in the elastic groove 42. During the operation, a special embedding tool is used to ensure that it is evenly pressed into the bottom of the groove. At the same time, a layer of high-temperature durable adhesive is applied to the bottom of the groove to enhance the adhesion between the stress pad 5 and the groove wall to avoid displacement of the stress pad 5 due to vibration or frequent load changes. When the nut block 2 is installed in the embedding groove, its bottom is in close contact with the top of the stress pad 5. Under stress, the stress pad 5 absorbs the load through its elastic deformation and evenly distributes it around the bottom of the thread, effectively reducing the risk of damage caused by local force concentration.

[0062] Loading tests have verified the significant effect of the design ratio of 1:2 in diameter under multi-directional extrusion loads. Stress pad 5 can achieve an 8% deformation rate under a compression pressure of 25MPa while maintaining the elastic recovery ability of the material without permanent deformation. Pressure distribution tests have shown that the stress peak at the threaded connection has dropped by 30%, significantly improving the uniformity of force. In addition, test results show that the design can extend the service life of the mold to more than 1.5 times the original, while reducing maintenance frequency and production costs.

[0063] In one embodiment, the finish machining of the first male head 4 in S4012 also includes machining the portion where the first male head 4 is connected to the bridge 14 and the core portion 12 into a smooth curved surface. In the actual use scenario of the mold, when the shear force borne by the bridge 14 is large, selecting a larger radius of curvature can effectively reduce the local stress value at the connection.

[0064] During processing, a high-precision ball-end milling cutter is used to cut the connection area layer by layer. After processing, the surface polishing process is used to further process the smooth surface to make its surface roughness reach Ra 0.8μm or less, minimizing the impact of surface defects on mechanical properties. After the smooth surface processing is completed, the curvature continuity of the area and the matching degree between the actual processing size and the design model are detected by three-dimensional scanning to ensure that the error is controlled within ±0.02mm; the smooth surfaces of the first male head 4, the connecting bridge 14 and the core not only improve the force uniformity of the mold structure, but also enhance the mold's anti-fatigue ability under multi-directional high loads, which is especially suitable for the use of molds in complex working conditions. Through this smooth transition design, not only the mechanical properties of the mold are optimized, but also the risk of early mold failure caused by processing defects or design defects is significantly reduced.

[0065] In one embodiment, the shape of the first male head 4 from the bridge 14 to the nut block 2 is a gradually decreasing column. In the specific implementation process, the gradually decreasing column shape is optimized through mechanical simulation in the design stage. The diameter change of the column is set according to a linear decreasing or nonlinear decreasing mode, wherein the decreasing rate is determined according to the load characteristics of the actual use scenario of the mold. For example, when the diameter of the starting end (the end connected to the bridge 14) of the first male head 4 is 10mm and the diameter of the ending end (the end connected to the nut block 2) is 8mm, a linear decreasing design is adopted, and the diameter of the column gradually decreases at a rate of 0.1mm per millimeter in the length direction. Such a design can make the load more uniform during the transfer from the bridge 14 to the nut block 2, avoiding excessive local force concentration.

[0066] In addition, the cylindrical shape also improves the assembly accuracy of the connection between the first male head 4 and the nut block 2. Since the diameter of the end of the cylindrical body is small, the threaded connection fits more tightly, thereby improving the stability and anti-loosening ability of the threaded connection. Under high-frequency load conditions, the gradually smaller cylindrical shape shows a higher fatigue life, effectively extending the service life of the entire mold.

[0067] Through the design and processing technology in this embodiment, the gradually smaller columnar shape not only improves the mechanical properties of the first male head 4, but also significantly improves the stability and reliability of the mold under complex load conditions, providing effective technical support for the long life and high performance of the mold.

[0068] In one embodiment, in the vertical direction, the overlapped portion of the first male connector 4 and the connecting bridge 14 is at least 8 mm. Specifically, the height of the connecting bridge 14 and the base shape of the first male connector 4 are determined by finite element analysis during the design stage. The setting of the overlapped portion length of at least 8 mm is based on the optimization of the multi-directional load characteristics borne by the mold during actual use. In mechanical simulation, the overlapped length can effectively disperse the shear force and extrusion force transmitted from the first male connector 4 to the connecting bridge 14, avoiding stress concentration caused by too short a connection area.

[0069] In one embodiment, a diverter hole 6 is processed at the center of the upper die male block 1, and the diverter hole 6 is used for being embedded with the screw male block 3. S402 further includes the following steps:

[0070] S4021: preheating, preheating the screw block 3 and the diverter hole 6;

[0071] S4022: applying an inlay coating, applying a layer of inlay coating on the contact surface of the screw male block 3 and the diversion hole 6;

[0072] S4023: heating and inlaying, the screw male block 3 coated with the inlay coating and the diversion hole 6 are placed in a heating device for heating treatment;

[0073] S4024: Cooling and solidification: naturally cooling the embedded screw head and upper die male head block 1 to solidify the embedded coating.

[0074] Specifically, when processing the shunt hole 6, firstly, the center position of the upper die male block 1 is accurately positioned by using a CNC drilling machine, and the shunt hole 6 is processed according to the design size. The diameter and depth of the shunt hole 6 are accurately matched according to the specifications of the screw male block 3, and the hole wall processing is required to be smooth and flawless to ensure the tight integration effect of the subsequent inlay process. After the processing is completed, the size and shape of the shunt hole 6 are tested by a three-dimensional detector to ensure that it meets the design requirements and is completely matched with the screw male block 3.

[0075] Entering step S402, the embedding process of the screw male block 3 and the diverter hole 6 includes the following steps:

[0076] S4021: Preheating. First, preheat the screw block 3 and the diverter hole 6 to eliminate the residual stress inside the material and ensure that the dimensions of the two remain stable during the embedding process. The preheating temperature is usually controlled between 200°C and 250°C. The preheating is achieved by infrared heating equipment, and its heating uniformity is monitored by real-time temperature sensors to ensure that the surface and internal temperature of the entire component are consistent to avoid dimensional changes or deformation caused by uneven thermal expansion.

[0077] S4022: Apply an inlay coating. A special inlay coating is applied on the contact surface of the screw block 3 and the diversion hole 6. The coating material is a high-temperature resistant ceramic-based composite coating with excellent shear strength and wear resistance. It can maintain stable bonding under high load conditions. Automatic spraying equipment is used during the coating process to ensure uniform thickness of the coating. After coating, the coating surface is slightly heated to initially solidify it and enhance adhesion.

[0078] S4023: Heating Mounting

[0079] The threaded male block 3 and the diverter hole 6 coated with the inlay coating are placed in the heating device at the same time for heating treatment. The heating temperature is usually set at 500℃ to 550℃ for 30 minutes to ensure that the coating material and the substrate are fully integrated and form a firm bonding surface. During the heating process, the threaded block and the diverter hole 6 are fine-tuned in size under the action of thermal expansion to make the fit tighter. The entire heating process is adjusted in real time by the temperature monitoring system to ensure uniform temperature in the inlay area.

[0080] S4024: Cooling and curing. After the heating is completed, the embedded screw male block 3 and the upper mold male head block 1 are taken out of the heating equipment and placed in a room temperature environment for natural cooling to complete the curing process of the coating. During the cooling process, external force interference is avoided to prevent stress concentration in the embedded area. After cooling, the mechanical properties of the bonding area between the screw male block 3 and the upper mold male head block 1 are tested, including shear strength and bonding stability tests. The results show that the bonding strength is significantly improved after the coating is cured, and the bonding force between the screw male block 3 and the diversion hole 6 reaches more than 80% of the original material, and can maintain long-term stability under high-load working conditions.

[0081] In one embodiment, the blank block is made of hard aluminum alloy. It should be noted that the hard aluminum alloy is mainly composed of aluminum, supplemented by alloy elements such as zinc, magnesium and copper, and obtains high strength and high hardness characteristics through heat treatment, while maintaining a relatively low density, thereby reducing the overall weight of the mold while meeting the strength requirements. The yield strength and tensile strength of the hard aluminum alloy are significantly better than those of ordinary aluminum alloys. It can effectively avoid deformation and breakage when the mold is subjected to multi-directional extrusion and shear forces. Its wear resistance and good thermal conductivity further improve the stability and durability of the mold in high-frequency and high-temperature use environments.

[0082] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A process for inserting a male head of a mold, characterized in that: The following steps are involved: S1: Material preparation and cutting: according to the structure of the mold, the prepared blank block is cut according to the complexity of the structure, and the complex structural part is separated from the main body to form at least three rough blank blocks; S2: rough processing of the rough blank: transporting the three rough blanks to corresponding processing equipment for stamping and forging to form preliminary blanks; S3: performing fine processing on the preform blocks: performing fine processing on three preform blocks simultaneously in different processing equipment to form fine blocks; S4: inlaying three of the refined blank blocks: the three refined blank blocks are an upper die male block, a nut block and a screw male block; S401: Thread assembly of the nut block and the upper die male block: S402: The screw male block and the upper die male head block are assembled by hot-inserting.

2. A mold male head inlay process according to claim 1, characterized in that: The upper mold male head block includes a solid part and a core part; there are a plurality of mold cavities between the solid part and the core part, and bridges are provided between the mold cavities and spaced by the bridges, one end of the bridge is connected to the solid part, and the other end is connected to the core part.

3. The male head inlaying process of a mold according to claim 2, characterized in that: S401 also includes the following steps: S4011: Roughly machining a connection between any one of the connecting bridges and the solid portion to form a first male head; S4012: Fine-processing the first male head, processing a first mounting groove at the top center of the first male head, wherein the first mounting groove has threads for threaded connection with the nut block.

4. The male head inlaying process of a mold according to claim 3, characterized in that: An elastic groove is also provided at the bottom of the first embedding groove. A stress pad is filled in the elastic groove. The stress pad abuts against the nut block.

5. The male head inlaying process of a mold according to claim 4, characterized in that: The ratio of the diameter of the stress pad to the diameter of the nut block is 1:

2.

6. The male head inlaying process of a mold according to claim 3, characterized in that: The fine processing of the first male head in S4012 also includes processing the portion where the first male head is connected to the connecting bridge and the core portion into a smooth curved surface.

7. The male head inlaying process of a mold according to claim 3, characterized in that: From the connecting bridge to the nut block, the first male head is in the shape of a column that gradually becomes smaller.

8. The male head inlaying process of a mold according to claim 3, characterized in that: The vertical overlap between the first male connector and the connecting bridge is at least 8 mm.

9. The male head inlaying process of a mold according to claim 1, characterized in that: A diverter hole is machined at the center of the upper die male block, and the diverter hole is used for inlaying with the screw male block. S402 also includes the following steps: S4021: Preheating, preheating the screw block and the diversion hole; S4022: Applying an inlay coating: applying an inlay coating on the contact surface of the screw block and the diversion hole; S4023: heating and inlaying, placing the screw male block coated with the inlay coating and the diversion hole together into a heating device for heating treatment; S4024: Cooling and solidifying, cooling the embedded screw head and upper die male head block naturally to solidify the embedded coating.

10. The male head inlaying process of a mold according to claim 1, characterized in that: The material of the blank block is hard aluminum alloy.

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