Mould for forging starlike sleeve

Abstract

The invention relates to the technical field of forging dies, in particular to a starlike sleeve forging die which comprises a lower die mechanism, a fixing mechanism, a telescopic mechanism, a water spraying assembly and an upper die plate. A main body of the lower die mechanism is arranged to be a lower die plate, and a mounting hole is formed in the upper surface of the lower die plate; the fixing mechanism is mounted in the mounting hole, the telescopic mechanism is mounted in the fixing mechanism, the water spraying assembly is mounted at the upper end of the telescopic assembly, and the upper mold plate is mounted on the telescopic assembly; the upper die plate is driven by a forging machine to move up and down periodically, the upper die plate drives the telescopic mechanism to stretch out and draw back in the fixing mechanism, and by controlling water flow in the telescopic mechanism and the fixing mechanism to flow in one direction, a certain amount of water flow is pressurized through stretching out and drawing back each time and then sprayed between the upper die plate and the lower die mechanism through the water spraying assembly.

Description

Technical Field

[0001] The invention relates to the technical field of forging dies, in particular to a die for forging a star-shaped sleeve. Background Art

[0002] The star sleeve forging die is a special die used in the forging process, usually used to produce parts with star-shaped cross-sections or star-shaped profiles. It can heat the metal material and place it in the die, and forge the material into the required star shape or other complex shapes through the shape and pressure of the die. Star sleeve dies are widely used in the fields of automobiles, machinery, aerospace, etc., especially in the production of parts with special shapes such as gears, couplings, transmission parts, etc., playing an important role. Star sleeve dies are generally designed with multiple branches or grooves, which can accurately form complex star shapes or other parts with special geometric shapes. These shapes require the parting surface, filling system and exhaust system of the die to be very finely designed. Due to the high temperature and high pressure environment involved in the forging process, the die material needs to have high wear resistance and good strength. Commonly used die materials include high alloy steel and hardened steel to ensure that the die can withstand repeated use. The design requirements of the star sleeve forging die are very precise to ensure that the forged parts are accurate in size and smooth in surface. The processing accuracy of the die directly affects the quality of the final product. By adopting the star sleeve forging die, mass production can be achieved, which greatly improves production efficiency. The mold is suitable for large-scale production and can meet the manufacturing needs of high-precision and high-strength parts.

[0003] During the use of the existing star-shaped sleeve forging mold, it is necessary to use running water to cool the mold. The temperature during the forging process is very high, and the metal material needs to withstand huge pressure inside the mold after being heated to the forging temperature. Due to the long-term high temperature, if the mold temperature is too high, the mold will cause thermal expansion and even deformation, affecting the mold's use accuracy and the quality of the forged product. Therefore, continuous cooling can prevent the mold from overheating, thereby maintaining the mold's geometry and accuracy. However, the method of using running water to spray the mold all the time, on the one hand, wastes water resources, and requires an additional water cooling device to adapt to the forging device. On the other hand, in the existing forging process, whether it is mechanical loading or manual loading, the high-temperature forging blank may come into contact with running water during the loading process, causing the blank's temperature to drop, causing the blank's mechanical properties to change, and reducing the yield rate of the finished product.

[0004] In view of the above situation, in order to overcome the above technical problems, the present invention designs a star-shaped sleeve forging die to solve the above technical problems. Summary of the invention

[0005] The technical purpose to be achieved by the present invention is to design a star sleeve forging die, which adopts passive cooling water injection, which reduces the waste of water resources on the one hand, and avoids the forging blank being affected by the cooling water during the loading and unloading process on the other hand.

[0006] In order to achieve the above technical objectives, the present invention provides the following technical solutions: A star-shaped sleeve forging die comprises a lower die mechanism, a fixing mechanism, a telescopic mechanism, a water spray assembly and an upper die plate; The main body of the lower mold mechanism is configured as a lower mold plate, and a mounting hole is provided on the upper surface of the lower mold plate; The fixing mechanism is installed in the mounting hole, the telescopic mechanism is installed in the fixing mechanism, the water spraying assembly is installed at the upper end of the telescopic assembly, and the upper template is installed on the telescopic assembly; The upper template moves up and down periodically driven by the forging machine, and the upper template drives the telescopic mechanism to telescope in the fixed mechanism. By controlling the unidirectional flow of water inside the telescopic mechanism and the fixed mechanism, a certain amount of water is pressurized and sprayed between the upper template and the lower template through the water spray assembly each time the telescopic mechanism is telescoped.

[0007] Preferably, the lower die mechanism also includes a forging module and a connecting groove; the forging module is installed on the upper side of the lower die plate, and the forging module is used to forge the blank into a star-shaped sleeve workpiece under the action of the forging machine, and the mounting holes are arranged at the four corners of the lower die plate, and the above-mentioned mounting holes are used to install the fixing mechanism, and the connecting groove is opened below the mounting hole, and the connecting hole is arranged as an inverted cone structure to cooperate with the inverted cone connecting block in the fixing mechanism.

[0008] Preferably, the lower template includes a heat dissipation channel, a connecting channel, a water injection port and a water outlet; the heat dissipation channel is opened inside the lower template, the heat dissipation channel can further reduce the template temperature of the lower template, the heat dissipation channel is arranged in a ring shape, the connecting channel is opened between adjacent heat dissipation channels, the connecting channel allows the heat dissipation channels to flow through each other, thereby improving the uniformity of heat dissipation, the water injection port is opened on the side of the lower template, a pressurized water injection device is arranged at the outer end of the water injection port, one end of the water injection port is arranged in communication with the heat dissipation channel, the water outlet is opened at the outer edge of the heat dissipation channel, and the water outlet is arranged in communication with the connecting groove.

[0009] Preferably, the fixing mechanism includes a fixing sleeve, a limiting groove, a connecting block and a water inlet ring; the fixing sleeve is installed in the mounting hole, the limiting groove is provided on the inner surface of the upper part of the fixing sleeve, the limiting groove is used to cooperate with the limiting block, and plays a guiding role when the upper template moves up and down, the connecting block is installed under the fixing sleeve, the connecting block is arranged in an inverted cone shape, the water inlet ring is installed under the connecting block, and the water inlet ring can deliver cooling water into the fixing sleeve from the water outlet.

[0010] Preferably, the fixing mechanism further comprises an interception frame, a first control ball and a return spring; the interception frame is arranged at the bottom end inside the fixing sleeve, the first control ball is arranged inside the interception frame, and the return spring is installed outside the interception frame. The interception frame is arranged in a hollow step shape, and 3-5 notches are provided on the side of the interception frame. With this arrangement, the interception frame limits the range of movement of the first control ball, so that the flow direction of the cooling water can only be from bottom to top.

[0011] Preferably, the telescopic mechanism includes a telescopic rod, a limit block, a water injection cavity and a telescopic sleeve; the telescopic rod is installed inside the fixed mechanism, the limit block circular array is arranged on the outer surface of the telescopic rod, the horizontal cross-sectional shape of the limit block is set to be semicircular, the water injection cavity is opened inside the telescopic rod, the telescopic sleeve is installed under the telescopic rod, and the diameter value of the telescopic sleeve is set to the inner diameter value of the fixed sleeve.

[0012] Preferably, the telescopic mechanism also includes an overflow groove, a second control ball, an interception plate, a transition chamber and a movable hole; the overflow groove is opened above the water injection cavity, the cross-section of the water injection cavity is set to be conical, the second control ball is arranged inside the overflow groove, the interception plate is installed at the upper end of the overflow groove, the transition chamber is opened above the interception plate, and the movable hole is opened on the side of the transition chamber.

[0013] Preferably, the water spray assembly comprises a mounting sleeve, a spherical water spray head and a water spray channel; the mounting sleeve is mounted on the side of the telescopic assembly, the spherical water spray head is mounted at one end of the mounting sleeve, and the water spray channel is opened inside the spherical water spray head. The spherical water spray head can rotate up and down in the mounting sleeve, so that the water spray angle can be adjusted as needed.

[0014] The beneficial effects of the present invention are as follows: (1) The present invention realizes a more efficient, energy-saving and precise cooling process in the forging process by setting a fixing mechanism and a telescopic mechanism. The innovative design of the system can not only significantly reduce the waste of water resources, but also avoid the adverse effects of cooling water on the forging blank during the loading and unloading process, thereby improving production efficiency and the quality of forging products. The traditional mold cooling method often directly sprays a large amount of cooling water through a nozzle to reduce the temperature of the mold. Although this cooling method can achieve a cooling effect, the waste of cooling water is serious, especially in large-scale production, the consumption of cooling water is huge, resulting in waste of resources and environmental burden. The present invention adopts the negative pressure principle to suck the cooling water into the telescopic mechanism and deliver the water to the key parts of the mold through a precise spraying method. This passive spray cooling method not only avoids the random spraying of cooling water, but also can accurately control the amount of cooling water used according to needs, greatly reducing water waste, and meeting the current energy-saving and environmental protection needs.

[0015] (2) The present invention avoids the influence of cooling water on the blank. In the traditional forging process, cooling water is often sprayed directly onto the surface of the mold, causing the cooling water to contact the forging blank, affecting the temperature control of the blank. This situation may cause the temperature of the blank to change too quickly, generate thermal stress, and even cause defects such as cracks and deformation, thereby affecting the forging quality. Through the design of the present invention, the cooling water is accurately sucked in and evenly distributed on the surface of the upper mold and the lower mold through the injection assembly, avoiding direct contact of the cooling water with the blank. In this way, the temperature of the blank can be kept stable during the forging process, reducing the temperature fluctuation caused by the cooling water, and effectively improving the quality of the forged product.

[0016] (3) The present invention improves production efficiency and reduces costs. Traditional cooling systems often require longer cooling time and more cooling water, which results in longer production cycles and higher production costs. The present invention can significantly reduce cooling time and reduce cooling water consumption by optimizing the amount of cooling water used and the spraying method, thereby effectively shortening the production cycle and reducing production costs. The efficient cooling system not only improves the output of the production line, but also improves the continuity and stability of production, reduces mold damage caused by uneven cooling or overheating, and further reduces the cost of repairing and replacing molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the installation positions of the fixing mechanism, the telescopic mechanism and the water spraying assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the lower mold mechanism of the present invention; Figure 4 It is a cross-sectional view of the lower mold mechanism of the present invention; Figure 5 It is a schematic diagram of the cooperation between the fixing mechanism and the telescopic mechanism of the present invention; Figure 6 It is a structural schematic diagram of the fixing mechanism of the present invention; Figure 7 It is a schematic diagram of the position of the first control ball during the spray cooling process of the present invention; Figure 8 It is a schematic diagram of the position of the first control ball after the spray cooling is completed in the present invention; Fig. 9 A cross-sectional view of the telescopic mechanism of the present invention; Fig.10 The present invention Fig. 9 A local enlarged schematic diagram in FIG. Fig.11 A cross-sectional view of a water spray assembly according to the present invention.

[0019] In the figure: 1. lower die mechanism; 11. lower template; 111. heat dissipation channel; 112. connecting channel; 113. water injection port; 114. water outlet; 12. forging module; 13. mounting hole; 14. connecting groove; 2. fixing mechanism; 21. fixing sleeve; 22. limiting groove; 23. connecting block; 24. water inlet ring; 25. interception frame; 26. first control ball; 27. reset spring; 3. telescopic mechanism; 31. telescopic rod; 32. limiting block; 33. water injection cavity; 34. telescopic sleeve; 35. overflow groove; 36. second control ball; 37. interception plate; 38. transition cavity; 39. movable hole; 4. water spray assembly; 41. mounting sleeve; 42. spherical water spray head; 43. water spray channel; 5. upper template. DETAILED DESCRIPTION

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1-11As shown, a star sleeve forging die is mainly composed of a lower die mechanism 1, a fixing mechanism 2, a telescopic mechanism 3, a water spray assembly 4 and an upper die plate 5, which aims to improve the cooling efficiency and stability of the die through innovative design. The main body of the lower die mechanism 1 is a lower die plate 11, which is provided with a plurality of mounting holes 13. The fixing mechanism 2 is firmly mounted on the lower die plate 11 through these mounting holes 13 to ensure that the die remains stable during the forging process. The telescopic mechanism 3 is installed inside the fixing mechanism 2 and can be telescopically moved as needed. A water spray assembly 4 is installed on its upper end. The function of the water spray assembly 4 is to accurately spray cooling water onto the die surface. The upper die plate 5 is installed above the telescopic mechanism 3 and is periodically moved up and down by the drive of the forging machine. Whenever the upper die plate 5 is pressed down, it not only drives the lower die plate 11 to forge, but also causes the telescopic mechanism 3 to telescope and control the flow of cooling water. During the cooling process, by precisely controlling the water flow inside the telescopic mechanism 3 and the fixed mechanism 2, each telescopic action can pressurize a certain amount of water and spray it between the upper template 5 and the lower template 11 through the water spray assembly 4, thereby achieving efficient cooling of the mold. The advantage of this design is that by precisely controlling the flow rate and spraying method of the cooling water, it ensures that the mold is cooled quickly at high temperatures, avoids damage to the mold caused by overheating or uneven temperature, and avoids water waste. The unidirectional flow of water effectively improves the efficiency of cooling water use and reduces the consumption of cooling water, which meets the requirements of modern energy conservation and environmental protection. In addition, precise cooling control can also reduce the impact of cooling water on the forging blank, ensure the quality of the forging product, and improve production efficiency and process stability.

[0022] like Figure 3 As shown, the lower die mechanism 1 of the present invention, in addition to the lower die plate 11, is further designed with a forging module 12 and a connecting groove 14. The forging module 12 is installed above the lower die plate 11, and is mainly used to process the forging blank into a star-shaped sleeve workpiece under the action of a forging machine. The forging module 12 is exquisitely designed and can withstand high pressure loads during the forging process, and the blank can be accurately formed by precisely controlling the forging force and direction. The four corners of the lower die plate 11 are provided with mounting holes 13, and these mounting holes 13 are used to install the fixing mechanism 2 to ensure the stability and precise fit of the various components of the die. The design of the mounting holes 13 ensures that the fixing mechanism 2 is firm and not loose during the working process of the die, thereby avoiding the displacement or deformation of the die and maintaining the stability of the forging process.

[0023] In addition, a connection groove 14 is provided below the mounting hole 13 of the lower template 11, and the connection groove 14 is designed to provide a more stable connection between the fixing mechanism 2 and the lower template 11. The opening of the connection groove 14 further enhances the stability of the mold as a whole and prevents the structure from loosening due to pressure changes during the forging process. The connection hole adopts an inverted cone structure, which is convenient for perfect cooperation with the inverted cone connection block 23 in the fixing mechanism 2, ensuring that the fixing mechanism 2 can be firmly installed on the lower template 11, and preventing the components from loosening or falling off due to vibration or external force. This structural design improves the reliability and precision of the mold and ensures the efficiency and stability of the forging process.

[0024] like Figure 4 As shown, the lower template 11 is an important component of the star sleeve forging die of the present invention, and is internally designed with a heat dissipation channel 111, a connecting channel 112, a water injection port 113 and a water outlet 114. These designs can effectively reduce the die temperature and ensure the stability and durability of the die during the forging process. First, the heat dissipation channel 111 is opened inside the lower template 11. Its main function is to take away the heat generated inside the die through the flow of cooling water, thereby reducing the temperature of the lower template 11 and avoiding deformation or damage to the die due to overheating. The annular structure of the heat dissipation channel 111 has a large contact area, which can effectively disperse heat, ensure that the temperature of the die is evenly reduced, and improve the cooling efficiency.

[0025] In order to further improve the cooling effect, connecting channels 112 are provided on the lower mold plate 11. These connecting channels 112 are opened between adjacent heat dissipation channels 111. The function of the connecting channels 112 is to connect different heat dissipation channels 111 so that cooling water can flow between multiple channels. Through this structural design, the cooling water can be more evenly distributed to the entire mold surface, improving the uniformity of heat dissipation, avoiding local overheating caused by uneven cooling, and thus improving the service life and production efficiency of the mold.

[0026] The water injection port 113 is provided on the side of the lower mold plate 11, and its outer end is equipped with a pressurized water injection device, which can inject cooling water into the heat dissipation channel 111 at a higher pressure, ensuring that the cooling water can flow quickly and cover the entire mold. One end of the water injection port 113 is connected to the heat dissipation channel 111, so that the cooling water can enter the channel for heat exchange. The water outlet 114 is provided at the outer edge of the heat dissipation channel 111 and is connected to the connecting groove 14, ensuring that the cooling water can be smoothly discharged from the mold to complete the cooling cycle. Through this precise design, the cooling system can efficiently reduce the mold temperature, improve the stability of the forging process and the quality of the product.

[0027] like Figure 5-6As shown, the fixing mechanism 2 in the present invention is composed of a fixing sleeve 21, a limiting groove 22, a connecting block 23 and a water inlet ring 24, and its main function is to stabilize the mold structure and realize the efficient operation of the cooling system. The fixing sleeve 21 is installed in the mounting hole 13 of the lower mold plate 11, providing a stable support structure so that other components can work stably in the mold. The upper inner surface of the fixing sleeve 21 is provided with a limiting groove 22, and the limiting groove 22 is designed to cooperate with the limiting block 32. During the up and down movement of the upper mold plate 5, the limiting block 32 cooperates with the limiting groove 22 to play a guiding role, ensuring the stability of the movement path of the upper mold plate 5, preventing the mold plate from shifting or tilting, and ensuring the accuracy during the forging process.

[0028] An inverted cone-shaped connection block 23 is installed below the fixed sleeve 21. The inverted cone-shaped design enables the connection block 23 to be firmly connected to other parts, further enhancing the stability of the entire structure. At the same time, the design of the connection block 23 is also convenient for connection with the water inlet ring 24. The water inlet ring 24 is installed below the connection block 23. Its main function is to transport cooling water from the water outlet 114 to the fixed sleeve 21. Through the action of the water inlet ring 24, the cooling water can smoothly enter the fixed sleeve 21 and enter the cooling system for heat exchange, thereby effectively reducing the temperature of the mold and ensuring the stable operation and long life of the mold in a high temperature environment.

[0029] The fixing mechanism 2 of the present invention further comprises an interception frame 25, a first control ball 26 and a return spring 27, which not only ensure the stability of the mold, but also play a role in controlling the flow of cooling water. The interception frame 25 is installed at the bottom end of the fixed sleeve 21, and its structure is designed to be a hollow step-shaped, with strong support capacity, and provides a fixed position for the first control ball 26. There are 3 to 5 notches on the side of the interception frame 25, and these notches are designed to limit the range of motion of the first control ball 26, so that the control ball can only make limited movements within the interception frame 25.

[0030] The first control ball 26 is located inside the interception frame 25, and the interception frame 25 can limit the first control ball 26 so that it can only move inside the interception frame 25 and the connecting block 23, and when the cooling water flows from bottom to top, Figure 7 As shown, the cooling water can push the first control ball 26 and make it intercepted by the interception frame 25, so that the cooling water overflows upward from the side hollow of the interception frame 25; and when the cooling water is directed downward, as shown in FIG. Figure 8As shown, the first control ball 26 is pressed downward and contacts the inner surface of the connecting block 23, thereby blocking the water inlet ring 24 and preventing the cooling water from flowing in the opposite direction. With this design, the cooling water can only flow from bottom to top along the predetermined direction, ensuring that the cooling water can effectively enter the cooling system and perform heat exchange without backflow or unstable flow. This control method can maximize the cooling effect, avoid uneven cooling, and improve the cooling efficiency of the mold.

[0031] In addition, the reset spring 27 is installed outside the interception frame 25. Its main function is to restore the first control ball 26 to its initial position through the elastic force of the spring after the cooling system stops working, so as to ensure that the system can run smoothly the next time it works. The design of the reset spring 27 ensures the self-recovery ability of the fixing mechanism 2, so that the entire cooling system can work efficiently and stably. Through these precise designs, the fixing mechanism 2 can effectively control the flow of cooling water and improve the stability and service life of the mold.

[0032] like Fig. 9 As shown, the function of the telescopic mechanism 3 in the present invention is to suck cooling water from the inside of the lower template 11 under the drive of the upper template 5 through the negative pressure principle. Specifically, the telescopic mechanism 3 includes components such as a telescopic rod 31, a limit block 32, a water injection cavity 33 and a telescopic sleeve 34. The telescopic rod 31 is installed inside the fixing mechanism 2, and when the upper template 5 moves, the telescopic rod 31 is driven to extend and retract up and down. The limit blocks 32 are arranged in a circumferential array on the outer surface of the telescopic rod 31. The horizontal cross-section shape of these limit blocks 32 is semicircular, which helps to limit the range of motion of the telescopic rod 31 and ensure the stability of the telescopic motion.

[0033] The water injection cavity 33 is arranged inside the telescopic rod 31, and its main function is to draw in cooling water through negative pressure, ensuring that the water flow can smoothly enter the telescopic rod 31 and further conduct to the cooling system. Through the negative pressure principle, cooling water is drawn in from the heat dissipation channel 111 of the lower template 11, flows to the telescopic mechanism 3 and is finally sprayed through the water spray assembly 4 for effective cooling. The telescopic sleeve 34 is installed below the telescopic rod 31, and its diameter is designed to match the inner diameter of the fixed sleeve 21, so that the telescopic sleeve 34 can be smoothly extended and retracted without hindrance.

[0034] like Fig.10 As shown, in addition to the telescopic rod 31, the stopper 32 and other components, the telescopic mechanism 3 also includes an overflow groove 35, a second control ball 36, an interception plate 37, a transition cavity 38 and a movable hole 39. The overflow groove 35 is opened above the water injection cavity 33, and can collect and guide the water flow during the flow of cooling water. The cross-section of the water injection cavity 33 is designed as a conical structure, which can effectively control the flow of cooling water and help the water flow to flow smoothly into other parts.

[0035] The second control ball 36 is installed inside the overflow groove 35. Its main function is to control the flow direction of the cooling water to prevent the cooling water from flowing back or flowing in an improper direction. The interception plate 37 is installed at the upper end of the overflow groove 35 to prevent the cooling water from overflowing and ensure that the cooling water can flow along the predetermined route. The transition chamber 38 is arranged above the interception plate 37 to provide buffering and guidance for the cooling water to flow into the next channel. The movable hole 39 is opened on the side of the transition chamber 38 to facilitate the connection of other parts or components to ensure the stability and efficient operation of the overall system.

[0036] like Fig.11 As shown, the water spray assembly 4 plays a vital role in the present invention, and improves the cooling efficiency of the mold by spraying cooling water. The water spray assembly 4 includes several key parts such as a mounting sleeve 41, a spherical water spray head 42 and a water spray channel 43. The mounting sleeve 41 is mounted on the side of the telescopic assembly as a supporting structure of the water spray assembly 4 to ensure its stable operation. The spherical water spray head 42 is mounted at one end of the mounting sleeve 41. The design of the spherical structure enables the nozzle to flexibly adjust the water spray angle to meet different cooling requirements.

[0037] The water spray channel 43 is opened inside the spherical water spray head 42, and the water flows through this channel to the water spray head and is sprayed out. The design of the spherical water spray head 42 enables it to rotate up and down in the mounting sleeve 41, so as to adjust the water spray angle. By adjusting the angle of the water spray head, the cooling water can be accurately sprayed to the required position of the mold, ensuring that the cooling water can evenly cover between the upper mold plate 5 and the lower mold plate 11, effectively reducing the mold temperature.

[0038] During operation of the present invention, the lower die mechanism 1 and the upper die plate 5 are installed inside the forging machine, and the output end of the pressurized water pump is installed in the water injection port 113. The cooling water flows through the water injection port 113 into the heat dissipation channel 111 and the connecting channel 112 to dissipate heat for the lower die plate 11, and enters the connecting groove 14 through the water outlet 114. When the forging machine is working, the upper template 5 is pressed downward to drive the telescopic mechanism 3 to move downward, and the telescopic rod 31 moves downward in the fixed sleeve 21, which plays a guiding role in the forging process. When the telescopic sleeve 34 moves downward, the space below the telescopic sleeve 34 becomes smaller, and the water pressure increases. Under the action of the water pressure, the first control ball 26 moves downward to the position as shown in FIG. Figure 8 In the state shown, the passage of the lower water inlet ring 24 is closed, and the water pressure presses the second control ball 36 upward, so that it is finally intercepted by the interception plate 37, so that the cooling water inside the mounting sleeve 41 passes through the overflow groove 35 and the transition cavity 38 and is sprayed out by the water spray assembly 4; After the injection is completed, the upper mold plate 5 is separated from the lower mold mechanism, and the upper mold plate 5 rises to drive the telescopic mechanism 3 to move upward, and the telescopic rod 31 moves upward. Due to the change in pressure at both ends of the water injection cavity 33, under the negative pressure principle, the liquid below the water inlet ring 24 and above the water injection cavity 33 moves into the water injection cavity 33; On the one hand, the cooling water in the water spray assembly 4 will flow back into the transition chamber 38, but because the second control ball 36 will move downward to the lower part of the overflow groove 35 during the backflow process, the overflow groove is blocked, thereby preventing the water from flowing back; On the other hand, the first control ball 26 will move to Figure 7 As shown, the cooling water enters the fixing mechanism 2 through the water inlet ring 24 and completes the filling of the cooling water, so as to facilitate the spray cooling when pressing down.

[0039] Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should be given the widest scope consistent with the principles and novel features disclosed herein. Although one or more exemplary embodiments of the present disclosure have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined in the appended claims.

Claims

1. A star-shaped sleeve forging die, characterized in that: It comprises a lower mold mechanism (1), a fixing mechanism (2), a telescopic mechanism (3), a water spraying assembly (4) and an upper mold plate (5); The main body of the lower mold mechanism (1) is configured as a lower mold plate (11), and a mounting hole (13) is provided on the upper surface of the lower mold plate (11); The fixing mechanism (2) is installed in the mounting hole (13), the telescopic mechanism (3) is installed in the fixing mechanism (2), the water spraying assembly (4) is installed at the upper end of the telescopic assembly, and the upper template (5) is installed on the upper side of the telescopic assembly; The upper mold plate (5) is driven by the forging machine to periodically move up and down, and the upper mold plate (5) drives the telescopic mechanism (3) to telescopically move in the fixed mechanism (2). By controlling the unidirectional flow of water inside the telescopic mechanism (3) and the fixed mechanism (2), a certain amount of water is pressurized each time it is telescoped and then sprayed between the upper mold plate (5) and the lower mold mechanism (1) through the water spraying assembly (4).

2. A star sleeve forging die according to claim 1, characterized in that: The lower die mechanism (1) further comprises a forging module (12) and a connecting groove (14); The forging module (12) is mounted on the upper side of the lower template (11); the mounting holes (13) are arranged at the four corners of the lower template (11); the connecting groove (14) is opened below the mounting hole (13); and the connecting groove (14) is arranged as an inverted cone structure.

3. A star sleeve forging die according to claim 1, characterized in that: The lower template (11) comprises a heat dissipation channel (111), a connecting channel (112), a water injection port (113) and a water outlet (114); The heat dissipation channel (111) is provided inside the lower template (11), the heat dissipation channel (111) is arranged in a ring shape, the connecting channel (112) is provided between adjacent heat dissipation channels (111), the water injection port (113) is provided on the side of the lower template (11), one end of the water injection port (113) is arranged in communication with the heat dissipation channel (111), the water outlet (114) is provided on the outer edge of the heat dissipation channel (111), and the water outlet (114) is arranged in communication with the connecting groove (14).

4. A star-shaped sleeve forging die according to claim 1, characterized in that: The fixing mechanism (2) comprises a fixing sleeve (21), a limiting groove (22), a connecting block (23) and a water inlet ring (24); The fixing sleeve (21) is installed in the installation hole (13), the limiting groove (22) is provided on the inner surface of the upper part of the fixing sleeve (21), the connecting block (23) is installed below the fixing sleeve (21), the connecting block (23) is configured to be an inverted cone, and the water inlet ring (24) is installed below the connecting block (23).

5. A star-shaped sleeve forging die according to claim 4, characterized in that: The fixing mechanism (2) further comprises an interception frame (25), a first control ball (26) and a return spring (27); The interception frame (25) is arranged at the bottom end inside the fixed sleeve (21), the first control ball (26) is arranged inside the interception frame (25), and the return spring (27) is installed outside the interception frame (25).

6. A star-shaped sleeve forging die according to claim 5, characterized in that: The interception frame (25) is configured to be in a hollow step-shaped shape, and 3-5 notches are provided on the side surface of the interception frame (25).

7. The star sleeve forging die according to claim 1, characterized in that: The telescopic mechanism (3) comprises a telescopic rod (31), a limit block (32), a water injection cavity (33) and a telescopic sleeve (34); The telescopic rod (31) is mounted inside the fixing mechanism (2); the limit blocks (32) are arranged in a circular array on the outer surface of the telescopic rod (31); the horizontal cross-sectional shape of the limit blocks (32) is arranged to be semicircular; the water injection cavity (33) is opened inside the telescopic rod (31); and the telescopic sleeve (34) is mounted below the telescopic rod (31).

8. A star-shaped sleeve forging die according to claim 7, characterized in that: The telescopic mechanism (3) further comprises an overflow groove (35), a second control ball (36), an interception plate (37), a transition chamber (38) and a movable hole (39); The overflow groove (35) is opened on the top of the water injection cavity (33); the cross section of the water injection cavity (33) is set to be conical; the second control ball (36) is arranged inside the overflow groove (35); the interception plate (37) is installed at the upper end of the overflow groove (35); the transition cavity (38) is opened on the top of the interception plate (37); and the movable hole (39) is opened on the side of the transition cavity (38).

9. A star-shaped sleeve forging die according to claim 1, characterized in that: The water spray assembly (4) comprises a mounting sleeve (41), a spherical water spray head (42) and a water spray flow channel (43); The mounting sleeve (41) is mounted on the side of the telescopic assembly, the spherical water spray head (42) is mounted on one end of the mounting sleeve (41), and the water spray flow channel (43) is opened inside the spherical water spray head (42).

10. A star-shaped sleeve forging die according to claim 9, characterized in that: The spherical water spray head (42) can rotate up and down in the mounting sleeve (41).

Images