Buffering device of aluminum material cold extrusion die
The aluminum cold extrusion die buffer device, with its multiple buffer structures and precise adjustment design, solves the problems of low buffering efficiency and poor adaptability of traditional devices, achieving the effects of high-efficiency buffering, stable production, and long-life dies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING HORIZUO MASCH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-15
AI Technical Summary
Traditional aluminum cold extrusion die buffer devices have a simple structural design, low buffering efficiency, and cannot effectively cope with complex and variable impact forces. Furthermore, they are not well adapted to the cold extrusion production system, which affects the die life and product quality.
It adopts a multi-buffered structure, including a return spring, a pneumatic chamber, and a retaining ring. Precise adjustment is achieved through threaded hole connection, and the stability of the pneumatic chamber is ensured by the sealing ring. The top plate and ring buckle are integrated to link with external equipment, forming an efficient and stable buffering system.
It significantly improves the cushioning effect, extends mold life, enhances production adaptability and product quality stability, reduces maintenance costs, and ensures the coordination and stability of the production process.
Smart Images
Figure CN224245334U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum cold extrusion die technology, specifically to a buffer device for aluminum cold extrusion die. Background Technology
[0002] In the aluminum processing industry, cold extrusion is an important forming method. Cold extrusion involves applying pressure to a metal billet at room temperature using a die, causing it to undergo plastic deformation within the die cavity to obtain a product with the desired shape, size, and properties. This process boasts numerous advantages, including high production efficiency, high material utilization, high product precision, and excellent surface quality. It is widely used in industries such as aerospace, automotive manufacturing, and electronic equipment, playing a crucial role in enhancing the utilization value and production efficiency of aluminum materials. However, during cold extrusion, the die is subjected to tremendous impact forces. These impact forces can not only lead to premature die damage, affecting die lifespan and production efficiency, but also adversely affect the precision and quality of the aluminum products. Therefore, to ensure the smooth operation of the cold extrusion process and improve die durability and product quality, aluminum cold extrusion die buffer devices have emerged. These devices effectively buffer the impact forces during the extrusion process, protecting the die and improving product quality.
[0003] Traditional aluminum cold extrusion die buffer devices have several significant drawbacks. Firstly, some traditional buffer devices have simple structural designs and poor inter-component linkage, making them ill-suited to effectively handle complex and variable impact forces, resulting in low buffering efficiency. This means the die still experiences considerable impact during extrusion, shortening its lifespan and increasing production costs. Secondly, some traditional buffer devices lack compatibility with the overall cold extrusion production system, failing to achieve efficient collaborative work with other equipment. This affects the coordination and stability of the entire production process, making it difficult to reliably guarantee the precision and quality of aluminum products. Consequently, this limits the application and development of aluminum cold extrusion technology in high-end product manufacturing. To address these issues, we propose an aluminum cold extrusion die buffer device. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a buffer device for aluminum cold extrusion dies, which solves the aforementioned problems.
[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a buffer device for aluminum cold extrusion die, comprising:
[0006] Buffer bar;
[0007] The mounting base is riveted and fixed to the bottom of the buffer rod. The mounting base has a downwardly recessed circular groove inside and a threaded mounting hole on the front.
[0008] The pressure rod is installed inside the top of the buffer rod. The pressure rod is cylindrical in shape, and the top of the pressure rod extends beyond the top of the buffer rod. A return spring is installed around the outside of the pressure rod.
[0009] The retaining ring is slidably installed in the inner groove of the buffer rod, and the outer wall of the retaining ring is in close contact with the inner wall of the inner groove of the buffer rod. The retaining ring has a threaded hole through it.
[0010] Preferably, the inner side of the retaining ring is provided with an inner ring, the inner wall of the inner ring is provided with a semi-circular arc groove, and the bottom of the semi-circular arc groove is provided with a groove extending to the bottom of the inner ring. The inner wall of the inner ring is provided with a through positioning hole at one end of the semi-circular arc groove.
[0011] Preferably, the top of the buffer rod is provided with a sealing ring, and the cross-section of the sealing ring has a trapezoidal structure.
[0012] Preferably, the buffer rod has an internal air pressure chamber adapted to the pressure rod, the top of the internal part of the buffer rod has a cylindrical groove, and the air pressure chamber is adapted to the cylindrical groove. The inner wall of the air pressure chamber has multiple sets of lubrication chambers at equal intervals.
[0013] Preferably, the bottom of the pressure rod is provided with a positioning block, and the positioning block is adapted to the groove at the bottom of the inner ring.
[0014] Preferably, the outer wall of the buffer rod is provided with a threaded hole that penetrates the interior, and the threaded hole is adapted to the threaded hole inside the retaining ring.
[0015] Preferably, the top of the pressure rod is snapped with a top plate, and the front of the top plate is provided with multiple sets of circular grooves at equal intervals.
[0016] Preferably, the top of the top plate is provided with a ring buckle, the top of the ring buckle is circular, and the outer wall of the ring buckle is provided with two sets of inwardly extending mounting holes on both sides.
[0017] Compared with the prior art, this utility model provides a buffer device for aluminum cold extrusion die, which has the following beneficial effects:
[0018] 1. Excellent buffering performance and energy absorption capacity: In this device, the return spring first absorbs part of the impact force by deforming when the pressure rod is compressed, achieving initial buffering. Then, the pressure rod enters the pneumatic chamber, and the gas in the compressed chamber generates a reaction force, further absorbing the impact energy and achieving secondary buffering. At the same time, the retaining ring and its inner ring structure play an auxiliary positioning and buffering role during the movement of the pressure rod. This combination of multiple buffering structures can more comprehensively and efficiently absorb and buffer the impact force on the mold during cold extrusion, greatly improving the buffering effect, better protecting the mold from impact damage, significantly extending the mold's service life, and reducing mold replacement costs.
[0019] 2. Precise and Flexible Buffer Performance Adjustment: In this device, the threaded hole inside the retaining ring matches the threaded hole on the outer wall of the buffer rod. Connected by bolts, operators can easily adjust the position of the retaining ring within the buffer rod. When enhanced buffer performance is needed, the retaining ring can be moved closer to the top of the buffer rod, allowing the pressure rod to interact with the retaining ring earlier and thus enhancing the buffering effect. Conversely, the retaining ring can be moved towards the bottom of the buffer rod to reduce the buffering effect. This precise and flexible adjustment method allows for quick and convenient adjustment of the buffer device's performance based on different aluminum materials, extrusion speeds, and other operating conditions in actual production. This ensures optimal buffering performance under various circumstances, improving production adaptability and product quality stability.
[0020] 3. Stable and reliable structural design and sealing performance: In this device, the retaining ring fits tightly into the internal groove of the buffer rod, and the inner ring is fixed to the pressure rod by bolts, preventing displacement during the compression of the return spring driven by the pressure rod, thus ensuring structural stability. At the same time, the sealing ring with a trapezoidal cross-section set at the top of the buffer rod can effectively prevent gas leakage in the air pressure chamber, ensuring the stable realization of the air pressure chamber's buffering function. The stable structure and good sealing performance enable this device to continuously and stably play a buffering role during long-term and frequent cold extrusion operations, reducing the probability of failure, lowering maintenance costs, and improving equipment reliability and production efficiency. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the present invention;
[0023] Figure 3 This is a schematic diagram of the present invention;
[0024] Figure 4 This is a schematic diagram of the present invention.
[0025] In the diagram: 1. Buffer rod; 101. Mounting base; 102. Sealing ring; 2. Air pressure chamber; 201. Lubrication chamber; 3. Pressure rod; 301. Return spring; 4. Snap ring; 401. Inner ring; 402. Positioning hole; 5. Top plate; 6. Ring buckle. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figure 1-4 A buffer device for cold extrusion dies of aluminum materials, characterized in that it comprises:
[0028] Buffer rod 1;
[0029] Mounting base 101 is riveted and fixedly installed on the bottom of buffer rod 1. The interior of mounting base 101 has a downwardly recessed circular groove, and the front of mounting base 101 has a threaded mounting hole.
[0030] The pressure rod 3 is installed inside the top of the buffer rod 1. The pressure rod 3 has a cylindrical structure and the top of the pressure rod 3 extends out of the top of the buffer rod 1. A return spring 301 is installed around the outside of the pressure rod 3.
[0031] The retaining ring 4 is slidably installed in the inner groove of the buffer rod 1, and the outer wall of the retaining ring 4 is tightly fitted with the inner wall of the inner groove of the buffer rod 1. The retaining ring 4 has a threaded hole through it.
[0032] Furthermore, the inner side of the retaining ring 4 is provided with an inner ring 401. The inner wall of the inner ring 401 has a semi-circular arc groove, and the bottom of the semi-circular arc groove has a groove extending to the bottom of the inner ring 401. The inner wall of the inner ring 401 has a through positioning hole 402 at one end of the semi-circular arc groove. The semi-circular arc groove on the inner wall of the inner ring 401 not only serves as a guide when the positioning block at the bottom of the pressure rod 3 enters, guiding the pressure rod 3 to be accurately positioned, but also provides a certain degree of cushioning. When the pressure rod 3 moves downward under force, the positioning block matches the bottom groove of the inner ring 401. This tight fit corresponds to the constraint of the retaining ring 4 by the groove inside the buffer rod 1, ensuring the stable movement of the pressure rod 3. The positioning hole 402 can be connected to other components to further enhance the stability of the retaining ring 4 within the buffer rod 1. Throughout the cushioning process, the inner ring 401 works in concert with the pressure rod 3 and the buffer rod 1, enabling the cushioning device to accurately respond to impact forces, effectively preventing the pressure rod 3 from shifting, ensuring the reliability and stability of the cushioning effect, and providing stable cushioning protection for the mold.
[0033] Furthermore, a sealing ring 102 is provided at the top inside the buffer rod 1, and the cross-section of the sealing ring 102 has a trapezoidal structure. When the pressure rod 3 moves within the air pressure chamber 2 inside the buffer rod 1, the sealing ring 102 tightly fits the pressure rod 3 and the inner wall of the buffer rod 1, preventing gas leakage from the air pressure chamber 2. This sealing function is closely linked to the buffering mechanism of the air pressure chamber 2, ensuring that the reaction force generated by the compression of gas can stably act on the pressure rod 3, achieving efficient secondary buffering. If the sealing ring 102 fails to seal, gas leakage in the air pressure chamber 2 will lead to unstable buffering force, affecting the buffering effect. The sealing ring 102 works in conjunction with the air pressure chamber 2 and the pressure rod 3 to ensure the stable realization of the buffering function of the air pressure chamber 2, enabling the entire buffering device to continuously and reliably perform its buffering function during long-term operation and extending the service life of the device.
[0034] Furthermore, the buffer rod 1 has an internal pneumatic chamber 2 adapted to the pressure rod 3. The top of the buffer rod 1 has a cylindrical groove, which the pneumatic chamber 2 fits into. Multiple lubrication chambers 201 are equidistantly arranged on the inner wall of the pneumatic chamber 2. When the pressure rod 3 enters the pneumatic chamber 2, its movement compresses the gas inside, generating a reaction force to resist the downward movement of the pressure rod 3, achieving secondary buffering. The lubrication chambers 201 on the inner wall of the pneumatic chamber 2 store lubricating oil. During the movement of the pressure rod 3, the lubricating oil seeps out, reducing friction between the pressure rod 3 and the inner wall of the pneumatic chamber 2, ensuring the smooth movement of the pressure rod 3, and allowing the buffering effect of the pneumatic chamber 2 to be stably performed. Simultaneously, the top of the pneumatic chamber 2 fits into the cylindrical groove inside the buffer rod 1. This structural design ensures the stability of the pneumatic chamber 2 within the buffer rod 1, thus working synergistically with the pressure rod 3 and the buffer rod 1 to effectively absorb and buffer the impact force received by the mold during cold extrusion, comprehensively improving the performance and reliability of the buffer device.
[0035] Furthermore, a positioning block is provided at the bottom of the pressure rod 3, and the positioning block is adapted to the groove at the bottom of the inner ring 401. When the mold is subjected to impact force, the pressure rod 3 moves downward, and the positioning block accurately falls into the groove at the bottom of the inner ring 401, so that the pressure rod 3 is tightly connected to the retaining ring 4. The outer wall of the retaining ring 4 is tightly fitted with the inner wall of the groove inside the buffer rod 1. Through this connection, the movement of the pressure rod 3 can be accurately transmitted to the retaining ring 4, thereby forming a stable linkage structure with the buffer rod 1. During the compression process of the pressure rod 3 driving the return spring 301, the cooperation between the positioning block and the groove of the inner ring 401 prevents the pressure rod 3 from shifting, ensuring that all components of the buffer device work together, effectively absorbing and buffering the impact force, ensuring the stability of the mold during the cold extrusion process, and improving the reliability and service life of the buffer device.
[0036] Furthermore, the outer wall of the buffer rod 1 is provided with a threaded hole that penetrates the interior, and the threaded hole is adapted to the internal threaded hole of the retaining ring 4. After the pressure rod 3 moves downward a short distance, the positioning block at its bottom can quickly interact with the groove at the bottom of the inner ring 401 of the retaining ring 4, so that the retaining ring 4, the pressure rod 3, and the buffer rod 1 form a tighter linkage structure, which restricts and buffers the movement of the pressure rod 3 in advance, thereby enhancing the buffering effect. Conversely, if the squeezing impact force is relatively small, the retaining ring 4 can be adjusted to a relatively lower position, so that the pressure rod 3 can have a larger stroke to utilize the buffering effect of the return spring 301 and the air pressure chamber 2, thereby achieving a precise linkage match between the buffer device and the actual working requirements, effectively improving the adaptability and reliability of the buffer device.
[0037] Furthermore, a top plate 5 is snapped onto the top of the pressure rod 3. The top plate 5 has multiple sets of equidistant circular grooves on its front side. When the aluminum material is placed on the top plate 5 for extrusion, the grooves increase the friction with the aluminum material, making its position more stable during the extrusion process. This ensures that the impact force is evenly transmitted to the pressure rod 3 through the top plate 5, preventing uneven buffering or device damage caused by aluminum material slippage. This close linkage between multiple components not only improves the buffering efficiency of the buffer device but also ensures the stability and precision of the entire cold extrusion operation, contributing to improved product quality from cold extruded aluminum.
[0038] Furthermore, the top of the top plate 5 is equipped with a ring buckle 6. The top of the ring buckle 6 has a circular structure, and two sets of inwardly extending mounting holes are provided on both sides of the outer wall of the ring buckle 6. Through the mounting holes on both sides of the outer wall of the ring buckle 6, the buffer device can be connected to the extrusion equipment or other auxiliary devices above using connectors. During the extrusion process, the ring buckle 6 can accurately transmit the motion and force from the equipment above to the top plate 5, and then sequentially transmit them to internal components such as the pressure rod 3 and the buffer rod 1, realizing efficient linkage of the entire device from top to bottom. For example, when the extrusion equipment reciprocates, the ring buckle 6 can drive the top plate 5 and the pressure rod 3 to move accordingly within the buffer rod 1 in accordance with the rhythm of the equipment's movement, so that the return spring 301 and the air pressure chamber 2 can play a timely buffering role. At the same time, the circular top structure design of the ring buckle 6 helps to better adapt to forces in different directions during the connection process, ensuring more uniform and stable force transmission. This integrated design with external equipment transforms the buffer device from an isolated component into one that is closely integrated with the entire production system. This enhances the coordination and stability of the entire aluminum cold extrusion production process, improving production efficiency while ensuring the safety of equipment and products.
[0039] Structural Description:
[0040] Buffer Rod: The buffer rod is the main support structure of the buffer device for aluminum cold extrusion dies. It is rod-shaped and provides the space for the installation and movement of other components. Internally, it has a pneumatic chamber adapted to the pressure rod. A cylindrical groove at the top fits into the pneumatic chamber, and a mounting base is riveted to the bottom, allowing the entire buffer device to be fixed in the desired position. The buffer rod also has a sealing ring inside to ensure the airtightness of the pneumatic chamber, and its outer wall has a threaded hole that fits into the threaded hole inside the retaining ring. This allows for adjustment of the retaining ring's position within the buffer rod, thereby optimizing the performance of the buffer device. It is a key support component for achieving the buffering function.
[0041] Mounting Base: The mounting base is riveted and fixed to the bottom of the buffer rod, and is a key component connecting the buffer device to the external fixed structure. It has a downward-recessed circular groove inside and threaded mounting holes on the front. These mounting holes allow bolts or other connectors to be used to securely install the buffer device in a specific position, ensuring stability during the cold extrusion of aluminum and providing a reliable mounting foundation for the entire device.
[0042] Sealing ring: The sealing ring is installed at the top inside the buffer rod, and its cross-section has a trapezoidal structure. The main function of the sealing ring is to ensure the sealing of the top of the air pressure chamber, prevent gas leakage in the air pressure chamber, thereby ensuring that the air pressure chamber can play a normal buffering role, maintain the stability of the air pressure in the buffer device, and ensure the reliability and stability of the air pressure buffering effect when the pressure rod moves in the air pressure chamber.
[0043] Pneumatic chamber: Located inside the buffer rod and fitted with the pressure rod, the pneumatic chamber is a crucial component of the buffer device for achieving its buffering function. The top of the pneumatic chamber fits into the cylindrical groove inside the buffer rod. Multiple sets of lubrication chambers are equidistantly arranged on its inner wall. These chambers store lubricating oil, which seeps out during the movement of the pressure rod, reducing friction between the pressure rod and the inner wall of the pneumatic chamber. This ensures smooth movement of the pressure rod, allowing the pneumatic chamber to stably perform its buffering function, working in conjunction with the pressure rod and buffer rod to absorb and cushion the impact force experienced by the die during cold extrusion.
[0044] Oil lubrication chambers: These chambers are located on the inner wall of the pneumatic chamber and are evenly distributed. Their main function is to store lubricating oil. When the pressure rod moves within the pneumatic chamber, the lubricating oil seeps out from the oil lubrication chambers, forming a lubricating layer between the pressure rod and the inner wall of the pneumatic chamber. This effectively reduces friction between the two, ensuring smooth movement of the pressure rod and allowing the pneumatic chamber to function stably, thus improving the overall performance and reliability of the buffer device.
[0045] Pressure bar: The pressure bar has a cylindrical structure, running through the top of the buffer bar and extending beyond its tip. A return spring is mounted around its outer side. The pressure bar directly bears the impact force of the mold. When impacted, it moves downwards, compressing the return spring, and simultaneously moves within the pneumatic chamber, utilizing the chamber's cushioning effect to absorb the impact. A positioning block at its bottom matches a groove on the bottom of the inner ring of the retaining ring, playing a crucial connecting role in the linkage of all components, ensuring coordinated operation of the buffer device and effectively absorbing and cushioning the impact force.
[0046] Return spring: The return spring is mounted around the outside of the pressure rod. When the pressure rod moves downwards under the impact force of the mold, the return spring is compressed and stores elastic potential energy. When the impact force disappears, the return spring releases the elastic potential energy, pushing the pressure rod upwards to return to its initial state, allowing the buffer device to return to its initial state and prepare for the next buffering operation. It is an important component for realizing the cyclical operation of the buffer device.
[0047] Snap ring: The snap ring is slidably installed in the internal groove of the buffer rod, with its outer wall tightly fitting the inner wall of the groove. A threaded hole is provided inside. An inner ring is located on the inner side of the snap ring, with a semi-circular arc groove and a bottom groove on its inner wall. A through-hole is also provided at one end of the inner wall. The snap ring serves a connecting and adjusting function in the buffer device. On one hand, its position within the buffer rod can be adjusted through the sliding fit and threaded hole connection. On the other hand, its inner ring fits into the bottom positioning block of the pressure rod, forming a linkage structure with the pressure rod to ensure that all components of the buffer device work together, improving the buffering effect.
[0048] Inner Ring: The inner ring is located inside the retaining ring. Its inner wall has a semi-circular arc groove, and the bottom of the groove has a groove extending to the bottom of the inner ring. A through-hole positioning hole is located at one end of the semi-circular arc groove on the inner wall. The inner ring fits into the positioning block at the bottom of the pressure rod through the bottom groove, ensuring a tight connection between the pressure rod and the retaining ring. When the pressure rod moves, it drives the retaining ring to move synchronously, thus forming a stable linkage structure with the buffer rod. This ensures that all components of the buffer device work together effectively to absorb and buffer impact forces, guaranteeing the stability of the mold during cold extrusion.
[0049] Positioning holes: Positioning holes are structures located on the inner ring of the retaining ring, penetrating the inner ring. Their function is to further refine the relative position of the retaining ring with other components. By inserting positioning pins or other positioning components into the positioning holes, the stability and accuracy of the connection between the retaining ring and the pressure bar and other related components can be effectively enhanced. This ensures that the retaining ring and the pressure bar are tightly linked during the extrusion process, guaranteeing the reliability of the coordinated operation of all components of the buffer device, thereby optimizing the buffering effect.
[0050] Top Plate: The top plate, snapped onto the top of the pressure bar, is a key component in the buffer device that receives and transmits impact force. Its front side features multiple sets of equidistant circular grooves. This design not only enhances the stability and efficiency of the connection between the top plate and the pressure bar but also facilitates the connection of other components or contact with the extruded aluminum material. During the cold extrusion of aluminum, the top plate first absorbs the impact force from the die and quickly and accurately transmits it to the pressure bar. Simultaneously, the circular grooves on the front side can be used to install auxiliary positioning or buffer components, forming a more complex linkage system with the pressure bar, buffer bar, and other components. This increases friction with the aluminum material, ensuring its positional stability during extrusion, improving buffering efficiency, and enhancing the stability and precision of the cold extrusion operation, ultimately contributing to improved product quality from cold extruded aluminum.
[0051] Ring-shaped buckle: The ring-shaped buckle is located at the top of the top plate. Its top is circular, and two sets of inwardly extending mounting holes are located on both sides of the outer wall. The ring-shaped buckle provides a convenient interface for connecting the buffer device to external equipment or other related components, allowing the buffer device to better integrate into the aluminum cold extrusion production system and achieve collaborative operation with other equipment. Using connectors through the mounting holes, the buffer device can be connected to the upper extrusion equipment or auxiliary devices. During extrusion, the ring-shaped buckle accurately transmits the motion and force from the upper equipment to the top plate, thereby driving the movement of internal components such as the pressure bar and buffer bar, achieving efficient top-to-bottom linkage of the entire device. Its circular top structure helps to better adapt to forces in different directions during connection, ensuring uniform and stable force transmission, improving the coordination and stability of the entire aluminum cold extrusion production process, and ensuring the safety of equipment and products.
[0052] Instructions for use:
[0053] During the operation of the aluminum cold extrusion die, when the die is subjected to impact force from the extruded aluminum, the buffer device begins to function. First, the impact force is transmitted to the pressure rod 3 through the top plate 5. The annular buckle 6 on the top of the top plate 5 can be used to connect relevant parts of the die, so that the impact force can be effectively transmitted to the inside of the device. The top plate 5 is snapped onto the top of the pressure rod 3. When the top plate 5 is subjected to impact force, it drives the pressure rod 3 to move downward. The pressure rod 3 has a cylindrical structure and is installed inside the top of the buffer rod 1. The return spring 301 installed around its outer side begins to compress when the pressure rod 3 moves downward. The compression process of the return spring 301 stores elastic potential energy and absorbs part of the impact force through its own deformation, playing a preliminary buffering role. As the pressure rod 3 continues to move downward... As the pressure rod 3 moves downwards, it enters the pneumatic chamber 2 inside the buffer rod 1. The pneumatic chamber 2 is located inside the buffer rod 1 and is adapted to the pressure rod 3. Multiple sets of lubrication chambers 201 equidistantly arranged on its inner wall can provide lubrication for the relative movement between the pressure rod 3 and the inner wall of the pneumatic chamber 2, reducing frictional resistance and ensuring the smooth movement of the pressure rod 3. The movement of the pressure rod 3 in the pneumatic chamber 2 will compress the gas in the chamber. The reaction force generated by the compressed gas further resists the downward movement of the pressure rod 3, thereby absorbing more impact energy and achieving secondary buffering. During the downward movement of the pressure rod 3, the positioning block at its bottom will be adapted to the groove at the bottom of the inner ring 401 of the retaining ring 4. The retaining ring 4 is slidably installed in the groove inside the buffer rod 1, and its outer wall is tightly fitted with the inner wall of the groove inside the buffer rod 1. When the positioning block of the pressure rod 3... When engaged with the bottom groove of the inner ring 401, the retaining ring 4 will be positioned within the groove of the buffer rod 1. Workers can install bolts into the threaded holes on the outer wall of the inner ring 401 through the mounting holes on the outer wall of the buffer rod 1, thereby fixing the inner ring 401 to the pressure rod 3 and preventing displacement during the compression process of the pressure rod 3 and the compression spring 301. The semi-circular arc groove on the inner wall of the inner ring 401 and the through-hole positioning hole 402 also play important roles. The semi-circular arc groove provides guidance and cushioning when the positioning block of the pressure rod 3 enters, while the positioning hole 402 can cooperate with other components to further enhance the stability of the retaining ring 4 within the buffer rod 1. When the impact force disappears, the return spring 301 begins to release its stored elastic potential energy, pushing the pressure rod 3 towards... As the upper movement returns to its original position, the compressed gas in the air pressure chamber 2 gradually returns to its original state, and the auxiliary pressure rod 3 resets. Throughout the process, the sealing ring 102 located at the top of the buffer rod 1 acts as a seal. Its cross-section has a trapezoidal structure, which effectively prevents gas leakage from the air pressure chamber 2 and ensures the stable implementation of the buffering function of the air pressure chamber 2. Through the linkage of the top plate 5, pressure rod 3, return spring 301, air pressure chamber 2, retaining ring 4, and sealing ring 102, this aluminum cold extrusion die buffer device can effectively absorb and buffer the impact force on the die during cold extrusion, achieving the effects of protecting the die, extending the die's service life, and improving product quality. At the same time, the coordinated work between the components can also ensure the stability and reliability of the buffer device itself.This ensures that it continues to provide good buffering performance during long-term operation.
[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A buffer device for a cold extrusion die for aluminum materials, characterized in that, include: Buffer rod (1); The mounting base (101) is riveted and fixedly installed at the bottom of the buffer rod (1). The mounting base (101) has a downwardly recessed circular groove inside, and the mounting base (101) has a threaded mounting hole on the front. The pressure rod (3) is installed inside the top of the buffer rod (1). The pressure rod (3) is cylindrical in shape, and the top of the pressure rod (3) extends out of the top of the buffer rod (1). A return spring (301) is installed around the outside of the pressure rod (3). The retaining ring (4) is slidably installed in the inner groove of the buffer rod (1), and the outer wall of the retaining ring (4) is tightly fitted with the inner wall of the inner groove of the buffer rod (1). The retaining ring (4) has a threaded hole through it.
2. The buffer device for aluminum cold extrusion die according to claim 1, characterized in that: The inner side of the retaining ring (4) is provided with an inner ring (401), the inner wall of the inner ring (401) is provided with a semi-circular arc structure groove, and the bottom of the semi-circular arc groove is provided with a groove extending to the bottom of the inner ring (401). The inner wall of the inner ring (401) is provided with a through positioning hole (402) at one end of the semi-circular arc groove.
3. The buffer device for aluminum cold extrusion die according to claim 1, characterized in that: The top of the buffer rod (1) is provided with a sealing ring (102), and the cross-section of the sealing ring (102) presents a trapezoidal structure.
4. The buffer device for aluminum cold extrusion die according to claim 1, characterized in that: The buffer rod (1) has an air pressure chamber (2) that is compatible with the pressure rod (3) inside. The top of the buffer rod (1) has a cylindrical groove, and the air pressure chamber (2) is compatible with the cylindrical groove. The inner wall of the air pressure chamber (2) has multiple sets of lubrication chambers (201) at equal intervals.
5. The buffer device for aluminum cold extrusion die according to claim 1, characterized in that: The bottom of the pressure rod (3) is provided with a positioning block, and the positioning block is adapted to the groove at the bottom of the inner ring (401).
6. The buffer device for aluminum cold extrusion die according to claim 1, characterized in that: The outer wall of the buffer rod (1) is provided with a threaded hole that penetrates the interior, and the threaded hole is adapted to the threaded hole inside the retaining ring (4).
7. A buffer device for aluminum cold extrusion die according to claim 1, characterized in that: The top of the pressure rod (3) is snapped with a top plate (5), and the top plate (5) has multiple sets of circular grooves equidistantly arranged on its front side.
8. A buffer device for aluminum cold extrusion die according to claim 7, characterized in that: The top of the top plate (5) is provided with a ring buckle (6), the top of the ring buckle (6) is circular, and the outer wall of the ring buckle (6) is provided with two sets of inwardly extending mounting holes on both sides.