A dual-station sliding upper die holder for a forging hydraulic press

Abstract

This application relates to a dual-station sliding upper die holder for a forging hydraulic press, belonging to the field of die installation and rapid die change technology for forging hydraulic presses. It includes an upper die holder body fixed to the output end of the hydraulic press, a sliding assembly slidably mounted on the upper die holder body, an upper die core assembly mounted on the sliding assembly, and a drive assembly for driving the sliding assembly to slide. The upper die core assembly includes a first upper die core and a second upper die core arranged side-by-side with the first upper die core. The upper die holder body has an internal mounting groove for mounting the sliding assembly. The sliding assembly includes a slide rail disposed within the mounting groove, a sliding seat that slides with the slide rail and mounts the first upper die core, and a mounting plate disposed on the sliding seat and mounts the second upper die core. The drive assembly includes an external servo cylinder and a transmission component disposed between the output end of the servo cylinder and the sliding seat. This application improves the die change efficiency of the upper die holder of the forging hydraulic press.

Description

Technical Field

[0001] This utility model relates to the field of mold installation and quick mold changing technology for forging hydraulic presses, and in particular to a dual-station sliding upper mold base for a forging hydraulic press. Background Technology

[0002] Forging hydraulic presses are core equipment for metal plastic forming and are widely used in key fields such as automotive, aerospace, and military industries. As the manufacturing industry develops towards higher efficiency, precision, and flexibility, higher demands are placed on the efficiency, accuracy, and flexibility of equipment. However, traditional equipment often uses an integral or fixed upper die base, allowing only a single stroke to complete a single process. When faced with complex forgings or the need for multiple continuous forging deformations, frequent die changes and process transitions not only significantly reduce production efficiency and equipment utilization but also affect the consistency of forgings due to repeated locking errors.

[0003] There are three main existing mold-changing solutions: First, manual hoisting mold changing, which is simple in structure and low in cost, but time-consuming, unsafe, and lacks reliable locking accuracy; second, rotary multi-station mold bases, which can pre-install multiple sets of molds, allowing for quick switching and high automation, but are complex in structure, costly, require high rigidity and precision in the rotary mechanism, and have limitations on the number and size of molds; and third, quick-change mold frames, which achieve rapid clamping and loosening through standard interfaces, resulting in faster mold changing, but are essentially still single-station sequential operations and cannot achieve continuous automatic mold-changing forging in a single clamping. In summary, although the above three solutions each have their own focus, none of them can achieve a continuous forging mode of "single clamping, automatic switching of multiple molds". Their common limitation is that they are still discrete operations, unable to eliminate the accumulation of locking errors and time losses caused by process flow, and difficult to simultaneously meet the modern production requirements of high efficiency, high precision, and low cost. Utility Model Content

[0004] In order to improve the die changing efficiency of the upper die holder of a forging hydraulic press, this application provides a dual-station sliding upper die holder for a forging hydraulic press.

[0005] This application provides a dual-station sliding upper die holder for a forging hydraulic press, which adopts the following technical solution: A dual-station sliding upper die holder for a forging hydraulic press includes an upper die holder body fixed to the output end of the hydraulic press, a sliding assembly slidably mounted on the upper die holder body, an upper die core assembly mounted on the sliding assembly, and a driving assembly for driving the sliding assembly to slide. The upper die core assembly includes a first upper die core and a second upper die core arranged side by side with the first upper die core. The upper die holder body has an internal mounting groove for mounting the sliding assembly. The sliding assembly includes a slide rail disposed in the mounting groove, a sliding seat that slides with the slide rail and is used for mounting the first upper die core, and a mounting plate disposed on the sliding seat and used for mounting the second upper die core. The driving assembly includes an external servo cylinder and a transmission component disposed between the output end of the servo cylinder and the sliding seat.

[0006] By adopting the above technical solution, the first upper die core and the second upper die core are installed side by side on the sliding assembly. The servo electric cylinder provides the driving force, which drives the sliding seat to slide back and forth on the upper die base body through the transmission component, realizing the rapid alternation of the two workstations. This allows the hydraulic press to continuously use different dies for forging in a single clamping. By repeating this cycle, two dies can be continuously alternating forging in a single clamping without stopping the machine to change dies, which significantly improves the die changing efficiency.

[0007] Optionally, the second upper mold core is detachably mounted on the mounting plate via a flange; the flange has a plurality of mounting holes distributed in a ring, and the mounting plate is provided with corresponding threaded holes, through which bolts pass and are threadedly connected to the threaded holes to achieve locking.

[0008] By adopting the above technical solution, the second upper mold core is detachably fixed to the mounting plate via a flange and bolts, making the assembly and disassembly of the second upper mold core more convenient and quick. Multiple ring-shaped mounting holes engage with the threaded holes on the mounting plate to achieve uniform tightening and ensure reliable connection. When it is necessary to replace the mold core with a different specification, or when this mold core is no longer needed, it can be quickly replaced simply by loosening the bolts, improving the versatility and ease of maintenance of the mold.

[0009] Optionally, the transmission component includes a transmission rod fixed to the middle of the sliding seat and a connecting flange located at the end of the transmission rod and mating with the push plate of the servo electric cylinder. The connecting flange and the push plate of the servo electric cylinder are connected by a bolt pair.

[0010] By adopting the above technical solution, the servo electric cylinder directly drives the sliding seat through the transmission rod, realizing the center force transmission and making the movement of the sliding seat more stable and smooth. At the same time, the connecting flange and the servo electric cylinder push plate are rigidly connected by bolt pairs, which is simple in structure and reliable in connection. It can transmit large tonnage push and pull forces without gaps and is easy to disassemble and maintain quickly, which significantly improves the rigidity and reliability of the drive.

[0011] Optionally, the mounting groove is further provided with limiting blocks at both ends of the bottom, and the limiting blocks are provided with buffer pads on the side facing the sliding seat; the limiting blocks are also provided with clearance openings for the transmission rod to pass through.

[0012] By adopting the above technical solution, limiting blocks are set at both ends of the mounting groove to prevent the sliding seat from slipping. The buffer pads on the limiting blocks are used to absorb impact energy when the sliding seat moves to the predetermined position, protecting the sliding components and the mold. The clearance allows the transmission rod to pass through without obstruction, ensuring a compact layout of the drive structure without affecting the limiting protection function.

[0013] Optionally, the bottom of the upper mold base body is provided with guide posts for mold closing guidance.

[0014] By adopting the above technical solution, a guide post is set at the bottom of the upper mold base body. When the mold is closed, it cooperates with the guide hole or guide sleeve of the lower mold to provide reliable guidance for the upper and lower molds, ensure the alignment accuracy when the mold is closed, and reduce the phenomenon of mold misalignment.

[0015] Optionally, the number of guide pillars is four sets, and the four sets of guide pillars are arranged in a rectangular shape at the bottom four corners of the upper mold base body.

[0016] By adopting the above technical solution, the four sets of guide columns are arranged in a rectangle at the four corners of the bottom, which increases the guide span, makes the anti-eccentric load capacity stronger during the mold closing process, and makes the guidance more stable and reliable, further improving the mold closing accuracy and forging stability.

[0017] Optionally, the side of the upper mold base body is also provided with an installation lifting ring for easy hoisting.

[0018] By adopting the above technical solution, a lifting ring is set on the side of the upper mold base body, providing a dedicated lifting point for hoisting operations, which facilitates the overall handling, installation and maintenance of the upper mold base, and improves the safety and convenience of equipment assembly and mold replacement.

[0019] In summary, this application includes at least one of the following beneficial technical effects: A dual-station sliding upper die holder for a forging hydraulic press has a first upper die core and a second upper die core mounted side by side on a sliding assembly. The servo electric cylinder provides the driving force, which drives the sliding seat to slide back and forth on the upper die holder body through a transmission component, realizing rapid alternation between the two stations. This allows the hydraulic press to continuously use different dies for forging in a single clamping. By repeating this cycle, alternating forging with two dies can be performed continuously in a single clamping without stopping the machine to change dies, significantly improving die changing efficiency. By setting limit blocks at both ends of the mounting groove, slippage of the sliding seat can be prevented. The buffer pads on the limit blocks are used to absorb impact energy when the sliding seat moves to the predetermined position, protecting the sliding components and the mold; By setting guide pillars at the bottom of the upper mold base, which cooperate with the guide holes or guide sleeves of the lower mold during mold closing, reliable guidance is provided for the upper and lower molds, ensuring the alignment accuracy during mold closing and reducing mold misalignment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the double-station sliding upper die holder of the forging hydraulic press in the embodiments of this application. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of the double-station sliding upper die holder of the forging hydraulic press in the embodiments of this application. Figure 2 .

[0022] Figure 3 This is an exploded view of the upper mold core assembly in an embodiment of this application.

[0023] Figure 4 yes Figure 1 A magnified view of a portion of point A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Upper mold base body; 11. Mounting groove; 111. Limiting block; 1111. Buffer pad; 1112. Clearance opening; 12. Guide post; 13. Mounting ring; 2. Sliding assembly; 21. Slide rail; 22. Sliding seat; 23. Mounting plate; 231. Threaded hole; 3. Upper mold core assembly; 31. First upper mold core; 32. Second upper mold core; 321. Flange; 3211. Mounting hole; 322. Bolt; 4. Drive assembly; 41. Servo electric cylinder; 42. Transmission component; 421. Transmission rod; 422. Connecting flange; 423. Bolt pair. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0026] This application discloses a dual-station sliding upper die holder for a forging hydraulic press. (Refer to...) Figure 1 A dual-station sliding upper die holder for a forging hydraulic press includes an upper die holder body 1 fixed to the output end of the hydraulic press, a sliding assembly 2 slidably mounted on the upper die holder body 1, an upper die core assembly 3 mounted on the sliding assembly 2, and a driving assembly 4 for driving the sliding assembly 2 to slide. The upper die holder body 1 is entirely fixed to the movable crossbeam, i.e., the output end, of the external hydraulic press, serving as the load-bearing foundation of the entire device. In this embodiment, the hydraulic press is existing technology and will not be described in detail here.

[0027] Reference Figure 2The upper mold base body 1 has a rectangular mounting groove 11 inside, which extends horizontally to provide space for the installation and movement of the sliding component 2. At each end of the mounting groove 11 along the sliding direction, there is a set of limiting blocks 111. The limiting blocks 111 are fixed to the upper mold base body 1 with screws, and a buffer pad 1111 is adhered to the side facing the sliding seat 22 to absorb impact and protect the mold and sliding component 2 when the sliding seat 22 moves to its limit position.

[0028] Reference Figure 1 and Figure 2 In addition, a rectangular clearance opening 1112 is provided on the limiting block 111 near the drive component 4. The position and size of the clearance opening 1112 correspond to the drive component 4, allowing the drive component 4 to pass freely through the clearance opening 1112 without interference. In this embodiment, the buffer pad 1111 is made of polyurethane or oil-resistant rubber material.

[0029] Reference Figure 2 The sliding assembly 2 includes two parallel slide rails 21 fixed to the bottom surface of the mounting groove 11, a sliding seat 22 that slides and engages with the slide rails 21, and a mounting plate 23 fixed to the sliding seat 22.

[0030] Reference Figure 2 and Figure 3 The upper die core assembly 3 includes a first upper die core 31 and a second upper die core 32, which are arranged side by side along the sliding direction. The first upper die core 31 is directly fixedly mounted on the upper surface of the sliding seat 22, while the second upper die core 32 is detachably connected to the mounting plate 23 via a flange 321. Both move together with the sliding seat 22. The flange 321 is sleeved and welded to the upper end handle of the second upper die core 32. The flange 321 has multiple mounting holes 3211 evenly distributed in a ring, and the mounting plate 23 has corresponding threaded holes 231. During installation, multiple bolts 322 pass through the mounting holes 3211 and are screwed into the threaded holes 231 to lock the flange 321 and the second upper die core 32 onto the mounting plate 23. This allows the second upper die core 32 to be quickly replaced according to the forging process requirements, or it can be removed when the second upper die core 32 is not needed, leaving only the first upper die core 31 for single-station operation, thus improving the flexibility of die configuration.

[0031] Reference Figure 1 and Figure 4The drive assembly 4 is used to drive the sliding seat 22 to switch between two working positions. The drive assembly 4 includes an external servo cylinder 41 and a transmission component 42 located between the output end of the servo cylinder 41 and the sliding seat 22. The transmission component 42 includes a transmission rod 421 fixed in the middle of the sliding seat 22 and a connecting flange 422 located at the end of the transmission rod 421 and connected to the push plate of the servo cylinder 41. The connecting flange 422 and the push plate of the servo cylinder 41 are connected by a bolt pair 423. It directly drives the sliding seat 22 through the servo cylinder 41 and the transmission rod 421, realizing the center force transmission, making the movement of the sliding seat 22 more stable and smooth, and effectively avoiding jamming. In this embodiment, the servo cylinder 41 is also fixed on the movable crossbeam of the hydraulic press and is located on one side of the upper mold base body 1. The servo cylinder 41 is prior art and will not be described in detail here. The bolt pair 423 consists of a bolt and a nut that is threaded to it.

[0032] Reference Figure 2 To ensure the alignment accuracy of the upper and lower molds during mold closing, four guide pillars 12 are arranged in a rectangular shape at the four corners of the bottom of the upper mold base body 1. The guide pillars 12 cooperate with the lower mold guide sleeve or guide hole fixed on the worktable. During the downward movement of the hydraulic press slide, they first contact the mold to forcibly correct the horizontal offset and ensure accurate mold closing between the first upper mold core 31 or the second upper mold core 32 and the lower mold.

[0033] Reference Figure 2 In addition, the upper mold base body 1 is provided with a lifting ring 13 on its side for easy hoisting. The lifting ring 13 is welded to the side of the upper mold base body 1, providing a safe and reliable lifting point for the hoisting ropes, and facilitating the overall hoisting of the equipment during installation, handling and maintenance. In this embodiment, there are four lifting rings 13.

[0034] The implementation principle of a dual-station sliding upper die holder for a forging hydraulic press according to an embodiment of this application is as follows: A dual-station sliding upper die holder for a forging hydraulic press. In the initial state, the sliding seat 22 is located in the first station, and the first upper die core 31 is aligned with the die closing center. The hydraulic press descends to complete the first forging process. After the hydraulic press returns, the push rod of the servo electric cylinder 41 moves, pushing the sliding seat 22 to the second station through the transmission rod 421. After the sliding seat 22 contacts the buffer pad 1111 of the limit stop 111, the second upper die core 32 is accurately aligned with the die closing center. The hydraulic press descends to complete the second forging process. This cycle allows for continuous alternating forging of two dies in a single clamping operation without stopping the machine to change dies, significantly improving die changing efficiency.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dual-station sliding upper die holder for a forging hydraulic press, characterized in that, The device includes an upper mold base body (1) fixed to the output end of a hydraulic press, a sliding assembly (2) slidably mounted on the upper mold base body (1), an upper mold core assembly (3) mounted on the sliding assembly (2), and a driving assembly (4) for driving the sliding assembly (2) to slide. The upper mold core assembly (3) includes a first upper mold core (31) and a second upper mold core (32) arranged side by side with the first upper mold core (31). The upper mold base body (1) has an opening inside for mounting the sliding assembly (2). The mounting slot (11) includes a sliding assembly (2) comprising a slide rail (21) disposed in the mounting slot (11), a sliding seat (22) which slides and cooperates with the slide rail (21) and is used for mounting the first upper mold core (31), and a mounting plate (23) disposed on the sliding seat (22) and is used for mounting the second upper mold core (32); the drive assembly (4) includes an external servo cylinder (41) and a transmission component (42) disposed between the output end of the servo cylinder (41) and the sliding seat (22).

2. The forging hydraulic press with dual-station sliding upper die holder according to claim 1, characterized in that, The second upper mold core (32) is detachably mounted on the mounting plate (23) via a flange (321); the flange (321) has a plurality of mounting holes (3211) arranged in a ring, and the mounting plate (23) is provided with corresponding threaded holes (231). Bolts (322) pass through the mounting holes (3211) and are threadedly connected to the threaded holes (231) to achieve locking.

3. The double-station sliding upper die holder of a forging hydraulic press according to claim 1, characterized in that, The transmission component (42) includes a transmission rod (421) fixed in the middle of the sliding seat (22) and a connecting flange (422) located at the end of the transmission rod (421) and connected to the push plate of the servo electric cylinder (41). The connecting flange (422) and the push plate of the servo electric cylinder (41) are connected by a bolt pair (423).

4. The double-station sliding upper die holder of a forging hydraulic press according to claim 3, characterized in that, The mounting groove (11) is provided with limit blocks (111) at both ends of the groove bottom. The limit blocks (111) are provided with buffer pads (1111) on the side facing the sliding seat (22). The limit blocks (111) are also provided with clearance openings (1112) for the transmission rod (421) to pass through.

5. A double-station sliding upper die holder for a forging hydraulic press according to claim 1, characterized in that, The bottom of the upper mold base body (1) is provided with guide posts (12) for mold closing guidance.

6. A double-station sliding upper die holder for a forging hydraulic press according to claim 5, characterized in that, The number of guide pillars (12) is four sets, and the four sets of guide pillars (12) are arranged in a rectangular shape at the bottom four corners of the upper mold base body (1).

7. A double-station sliding upper die holder for a forging hydraulic press according to claim 1, characterized in that, The upper mold base body (1) is also provided with a lifting ring (13) on the side for easy hoisting.

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