Quick die replacing device for bar forging

Abstract

The utility model discloses a quick die replacing device for bar forging, which relates to the technical field of bar processing and comprises a forging workbench, a forging hydraulic telescopic cylinder is fixedly connected to the center of the upper side of the surface of the forging workbench through a hydraulic cantilever, and a movable inner rod of the forging hydraulic telescopic cylinder is downwards and fixedly connected with an upper die pressing seat. An indexing rotary table is arranged on the front side of the forging and pressing workbench, a center fixing column is fixedly connected to the center of the upper end of the indexing rotary table, a multi-stage telescopic hydraulic cylinder is fixedly connected to the side wall of the center fixing column, and the safety and convenience of die replacement are remarkably improved. In addition, the device is compact in structural design, the matching precision of all the components is high, the die replacement process is smoother, and the possibility of faults is reduced. Meanwhile, by adopting a standardized die fixing and butt joint mode, the device is suitable for bar forging dies of various specifications, and the universality and flexibility of equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of bar processing technology, specifically to a quick-change device for bar forging molds. Background Technology

[0002] Currently, stainless steel bar forging die replacement devices generally adopt a split-type bolt locking structure, with the die mounting base and die holder fixed together by multiple sets of high-strength bolts. When replacing the die, it is necessary to remove each bolt in sequence, manually adjust the alignment of the die and the base, and then retighten the new die.

[0003] During die replacement, the disassembly and installation of bolts often consume a significant amount of time, directly impacting the continuous operation capability of the production line. Furthermore, manual alignment relies heavily on operator experience, leading to substantial errors during repeated positioning. In high-temperature environments, bolts are prone to thermal expansion, sometimes even causing jamming. These factors further increase the difficulty of die replacement. Therefore, we propose a rapid die replacement device for bar forging. Utility Model Content

[0004] The purpose of this invention is to address the problem that bolt disassembly and installation during mold changing often consume a significant amount of time, directly impacting the continuous operation capability of the production line. Furthermore, manual alignment relies heavily on operator experience, leading to substantial errors during repeated positioning. In high-temperature environments, bolts are prone to thermal expansion, sometimes even causing jamming, further complicating mold changing. This invention provides a quick mold changing device for bar forging.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A quick-change die for bar forging includes a forging worktable. A forging hydraulic telescopic cylinder is fixedly connected to the center of the upper side of the forging worktable via a hydraulic cantilever. An upper die pressure seat is fixedly connected downwards to the movable inner rod of the forging hydraulic telescopic cylinder. An indexing turntable is provided on the front side of the forging worktable. A central fixing column is fixedly connected to the center of the upper end of the indexing turntable. A multi-stage telescopic hydraulic cylinder is fixedly connected to the side wall of the central fixing column. A die fixing frame is fixedly connected outwards to the movable inner rod of the multi-stage telescopic hydraulic cylinder. A mounting boss is provided on the bottom side, and a fixed lower mold is fixedly connected to the outside of the mounting boss. Two guide slide rods are symmetrically installed on the mounting boss on the outside of the mold fixing frame, and a sliding upper mold seat is slidably connected to the two guide slide rods. A main support spring is sleeved between the bottom of the sliding upper mold seat and the upper side of the mounting boss on the outer wall of the guide slide rod. A forging upper mold is fixedly connected to the outside of the sliding upper mold seat. A matching docking mechanism is provided between the center of the upper side of the front table surface of the forging workbench and the center of the bottom surface of the upper mold pressure seat and the outside of the fixed lower mold and the forging upper mold.

[0007] Furthermore, the outer center of the mold fixing frame and the sliding upper mold base is fixedly connected to the fixing slot, and the corresponding side of the fixed lower mold and the forging upper mold is fixedly connected to the plug-in block. The outer sides of the fixed lower mold and the forging upper mold are provided with connecting long bolts through the plug-in blocks, and the connecting long bolts are threaded to the mold fixing frame and the sliding upper mold base respectively after passing through the fixed lower mold and the forging upper mold.

[0008] Furthermore, the docking mechanism includes a mold docking groove opened on the upper side of the front table of the forging workbench and at the bottom center of the upper mold base. The mold docking groove is a square groove with a dovetail protrusion in the center, and the size of the square groove matches the fixed lower mold and the forging upper mold. The outer sides of the fixed lower mold and the forging upper mold are provided with auxiliary docking grooves corresponding to the mold docking groove, and the auxiliary docking grooves match the dovetail protrusion in the center of the mold docking groove.

[0009] Furthermore, the upper side of the indexing turntable is provided with a matching dovetail guide protrusion corresponding to the auxiliary docking groove.

[0010] Furthermore, a limiting protrusion is provided on the upper front side of the mold fixing frame, and the bottom of the limiting protrusion is flush with the bottom of the mold docking groove on the upper mold pressing seat.

[0011] Furthermore, a rubber anti-collision pad is fixedly connected to the upper end of the sliding upper mold base.

[0012] Furthermore, an auxiliary guide rod is fixedly connected to the center of the bottom rear side of the upper die pressing seat, and an auxiliary guide slot is opened on the front side of the forging worktable corresponding to the auxiliary guide rod. Multiple auxiliary support springs are provided between the bottom of the auxiliary guide slot on the front side of the forging worktable and the bottom of the auxiliary guide rod.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model features a forging worktable. The front surface of the forging worktable and the upper die holder can be docked and fixed with the fixed lower die and the upper forging die via a docking mechanism. An indexing turntable allows for indexing and rotation, adjusting the die fixing frame of the forward forging worktable. A multi-stage telescopic hydraulic cylinder extends the die fixing frame, allowing the different fixed lower dies and upper forging dies fixed to the outside of the die fixing frame to dock with the forging worktable. A forging hydraulic telescopic cylinder on the upper side of the forging worktable drives the upper die holder downwards for forging. This allows for rapid die replacement. The docking mechanism's limiting alignment eliminates the need for bolt removal and manual alignment, significantly improving the efficiency of bar forging. The guide slide and sliding upper die holder ensure stable downward movement, significantly improving the safety and convenience of die replacement. Furthermore, the device's compact structure and high precision of component fit make the die replacement process smoother and reduce the possibility of malfunctions. Meanwhile, by adopting standardized mold fixing and docking methods, the device is applicable to various specifications of bar forging molds, improving the equipment's versatility and flexibility.

[0015] 2. This utility model features a mold docking groove that allows the lower mold and the upper forging mold to be inserted and positioned for fixing. The dovetail protrusion and auxiliary docking groove improve the stability and accuracy of mold installation, avoid errors caused by manual alignment, and further improve the efficiency and precision of mold replacement.

[0016] 3. This utility model restricts the upward movement of the sliding upper die holder by setting a limiting protrusion. This ensures that the fixed lower die and the forging upper die can be smoothly inserted into the upper part of the forging worktable, while also allowing the main support spring to be pre-tightened. This provides stronger support force, ensuring stable support for the die during forging operations and preventing the die from shaking or shifting during high-pressure forging. This improves the stability of the forging operation and product quality. Simultaneously, the pre-tightened main support spring can effectively absorb the impact force during forging, protecting the overall structure of the die and device, and extending their service life. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a side sectional view of the present invention;

[0020] Figure 4 This is a partial front sectional view of the corresponding docking mechanism position of this utility model.

[0021] Reference numerals: 1. Forging worktable; 2. Hydraulic cantilever; 3. Forging hydraulic telescopic cylinder; 4. Auxiliary support spring; 5. Auxiliary guide rod; 6. Upper die pressure seat; 7. Die docking groove; 8. Indexing turntable; 9. Central fixed column; 10. Multi-stage telescopic hydraulic cylinder; 11. Die fixing frame; 12. Fixed lower die; 13. Guide slide rod; 14. Sliding upper die seat; 15. Forging upper die; 16. Main support spring; 17. Auxiliary docking groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] Please see Figures 1-4 This utility model provides a quick-change device for forging dies for bar stock, including a forging worktable 1. A forging hydraulic telescopic cylinder 3 is fixedly connected to the center of the upper side of the forging worktable 1 via a hydraulic cantilever 2. An upper die pressure seat 6 is fixedly connected downwards to the movable inner rod of the forging hydraulic telescopic cylinder 3. An indexing turntable 8 is provided on the front side of the forging worktable 1. A central fixing column 9 is fixedly connected to the center of the upper end of the indexing turntable 8. A multi-stage telescopic hydraulic cylinder 10 is fixedly connected to the side wall of the central fixing column 9. A die fixing frame 11 is fixedly connected outwards to the movable inner rod of the multi-stage telescopic hydraulic cylinder 10. An mounting boss is provided on the outer bottom, and a fixed lower mold 12 is fixedly connected to the outer side of the mounting boss. Two guide slide rods 13 are symmetrically installed on the outer mounting boss of the mold fixing frame 11, and a sliding upper mold seat 14 is slidably connected to the two guide slide rods 13. A main support spring 16 is sleeved between the outer wall of the guide slide rod 13 and the bottom of the sliding upper mold seat 14 and the upper side of the mounting boss. A forging upper mold 15 is fixedly connected to the outer side of the sliding upper mold seat 14. A matching docking mechanism is provided between the center of the upper side of the front table surface of the forging workbench 1 and the center of the bottom surface of the upper mold pressure seat 6 and the outer side of the fixed lower mold 12 and the forging upper mold 15.

[0024] In this embodiment, preferably, the outer center of the mold fixing frame 11 and the sliding upper mold base 14 is fixedly connected to a fixing slot, and the corresponding side of the fixed lower mold 12 and the forging upper mold 15 is fixedly connected to a plug-in block. The outer sides of the fixed lower mold 12 and the forging upper mold 15 are provided with connecting long bolts that penetrate through the plug-in blocks, and the connecting long bolts penetrate through the fixed lower mold 12 and the forging upper mold 15 and are respectively threaded to the mold fixing frame 11 and the sliding upper mold base 14. Through the fixed slots, plug-in blocks, and connecting long bolts, the installation and disassembly of the mold with the mold fixing frame 11 and the sliding upper mold base 14 are realized, which facilitates the maintenance and replacement of the fixed lower mold 12 and the forging upper mold 15.

[0025] In this embodiment, preferably, the docking mechanism includes a mold docking groove 7 formed at the upper side of the front table surface of the forging workbench 1 and at the bottom center of the upper mold base 6. The mold docking groove 7 is a square groove with a dovetail protrusion at the center, and the size of the square groove matches the fixed lower mold 12 and the forging upper mold 15. An auxiliary docking groove 17 is formed on the outer side of the fixed lower mold 12 and the forging upper mold 15 corresponding to the mold docking groove 7, and the auxiliary docking groove 17 matches the dovetail protrusion at the center of the mold docking groove 7. Through the mold docking groove 7, the mold docking groove 7 can be inserted into the fixed lower mold 12 and the forging upper mold 15, providing positioning for fixing the fixed lower mold 12 and the forging upper mold 15. The docking of the dovetail protrusion and the auxiliary docking groove 17 improves the stability and accuracy of mold installation, avoids errors caused by manual alignment, and further improves the efficiency and accuracy of mold replacement.

[0026] In this embodiment, preferably, the upper side of the indexing turntable 8 is provided with a matching dovetail guide protrusion corresponding to the auxiliary docking groove 17. The dovetail guide protrusion guides the auxiliary docking groove 17 of the fixed lower die 12 to quickly and accurately dock with the central dovetail protrusion of the die docking groove 7, further improving the stability of the die fixation on the indexing turntable 8. This enhances the stability of the die during the switching process and ensures the safe operation of the forging process.

[0027] In this embodiment, preferably, a limiting protrusion is provided on the upper front side of the mold fixing frame 11, and the bottom of the limiting protrusion is flush with the bottom of the mold docking groove 7 on the upper mold pressure seat 6. By limiting the upward movement of the sliding upper mold seat 14 through the limiting protrusion, it ensures that the fixed lower mold 12 and the forging upper mold 15 can be smoothly inserted into the upper side of the forging worktable 1, while allowing the main support spring 16 to be pre-tightened, providing stronger support elasticity. This provides stable support force for the mold during forging operations, preventing the mold from shaking or displacing during high-pressure forging, thereby improving the stability of the forging operation and product quality. At the same time, the pre-tightened main support spring 16 can also effectively absorb the impact force during the forging process, protecting the overall structure of the mold and device and extending its service life.

[0028] In this embodiment, preferably, a rubber anti-collision pad is fixedly connected to the upper end of the sliding upper mold base 14. The rubber anti-collision pad effectively prevents direct collision between the sliding upper mold base 14 and the mold fixing frame 11 during vertical movement, avoiding damage to both the sliding upper mold base 14 and the mold fixing frame 11. It also reduces noise generation, providing a quieter and more comfortable working environment for the workers. Furthermore, the rubber anti-collision pad also has a certain buffering effect, absorbing the impact force during forging to a certain extent, further protecting the overall structure of the mold and the device.

[0029] In this embodiment, preferably, an auxiliary guide rod 5 is fixedly connected to the center of the rear bottom of the upper die pressing seat 6, and an auxiliary guide slot is provided on the front surface of the forging worktable 1 corresponding to the auxiliary guide rod 5. Multiple auxiliary support springs 4 are provided between the bottom of the auxiliary guide slot on the front surface of the forging worktable 1 and the bottom of the auxiliary guide rod 5. Through the auxiliary guide rod 5, the auxiliary guide rod 5 can improve the stability of the inner movement of the upper die pressing seat 6 by being guided by the auxiliary guide slot. Furthermore, the auxiliary support springs 4 assist in resetting and provide support. The auxiliary guide rod 5, auxiliary guide slot, and auxiliary support springs 4 make the upper die pressing seat 6 more stable during lifting and lowering movements, avoiding inaccurate die alignment caused by shaking or displacement, and further improving the efficiency and accuracy of die replacement. At the same time, the auxiliary support springs 4 can also effectively absorb the impact force during the forging process, protecting the overall structure of the die and the device, and extending its service life.

[0030] The working principle and usage process of this utility model are as follows: When the device is in use, the forging worktable 1, the front surface of the forging worktable 1 and the upper die holder 6 can be docked and fixed with the fixed lower die 12 and the forging upper die 15 through the docking mechanism. The indexing turntable 8 can be indexed and rotated to adjust the die fixing frame 11 of the forward forging worktable 1. The die fixing frame 11 is pushed out by the multi-stage telescopic hydraulic cylinder 10, so that the different fixed lower dies 12 and forging upper dies 15 fixed on the outside of the die fixing frame 11 dock with the forging worktable 1. The forging hydraulic telescopic cylinder 3 on the upper side of the forging worktable 1 drives the upper die holder 6 to press down for forging. The forging die can be changed quickly. The limiting alignment by the docking mechanism eliminates the need to disassemble bolts and manually align, which greatly improves the efficiency of bar forging. The guide slide rod 13 and the sliding upper die holder 14 ensure stable downward movement, which significantly improves the safety and convenience of die replacement. Furthermore, the device features a compact structure and high precision in the fit between components, making mold changes smoother and reducing the likelihood of malfunctions. Simultaneously, by employing standardized mold fixing and docking methods, the device is suitable for various specifications of bar forging molds, improving the equipment's versatility and flexibility.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-change device for forging bars, characterized in that: The forging worktable (1) includes a forging hydraulic telescopic cylinder (3) fixedly connected to the upper center of the worktable (1) via a hydraulic cantilever (2). The movable inner rod of the forging hydraulic telescopic cylinder (3) is fixedly connected to an upper die pressing seat (6) facing downward. An indexing turntable (8) is provided on the front side of the forging worktable (1). A central fixing column (9) is fixedly connected to the upper center of the indexing turntable (8). A multi-stage telescopic hydraulic cylinder (10) is fixedly connected to the side wall of the central fixing column (9). A die fixing frame (11) is fixedly connected to the movable inner rod of the multi-stage telescopic hydraulic cylinder (10) facing outward. A mounting boss is provided on the bottom outer side of the die fixing frame (11). The mounting boss is fixedly connected to a fixed lower mold (12). Two guide slide rods (13) are symmetrically installed on the mounting boss on the outside of the mold fixing frame (11). A sliding upper mold seat (14) is slidably connected to the two guide slide rods (13). A main support spring (16) is sleeved between the bottom of the sliding upper mold seat (14) and the upper side of the mounting boss on the outer wall of the guide slide rod (13). A forging upper mold (15) is fixedly connected to the outside of the sliding upper mold seat (14). A matching docking mechanism is provided between the center of the upper side of the front table surface of the forging workbench (1) and the center of the bottom surface of the upper mold pressure seat (6) and the outside of the fixed lower mold (12) and the forging upper mold (15).

2. The quick-change device for bar forging dies according to claim 1, characterized in that: The mold fixing frame (11) and the sliding upper mold base (14) are fixedly connected to the center of the outer side of the fixing slot, and the lower mold (12) and the forging upper mold (15) are fixedly connected to the corresponding side of the fixing lower mold (12) and the forging upper mold (15). The lower mold (12) and the forging upper mold (15) are connected to the corresponding side of the plug-in block by the connecting long bolts, and the connecting long bolts are threaded to the mold fixing frame (11) and the sliding upper mold base (14) respectively after passing through the lower mold (12) and the forging upper mold (15).

3. The quick-change device for bar forging dies according to claim 1, characterized in that: The docking mechanism includes a mold docking groove (7) opened on the upper side of the front table of the forging workbench (1) and the bottom center of the upper mold pressure seat (6). The mold docking groove (7) is a square groove with a dovetail protrusion in the center, and the size of the square groove matches the fixed lower mold (12) and the forging upper mold (15). The outer side of the fixed lower mold (12) and the forging upper mold (15) is provided with an auxiliary docking groove (17) corresponding to the mold docking groove (7), and the auxiliary docking groove (17) matches the dovetail protrusion in the center of the mold docking groove (7).

4. The quick-change device for bar forging dies according to claim 3, characterized in that: The indexing turntable (8) has a matching dovetail guide protrusion on its upper side corresponding to the auxiliary docking groove (17).

5. The quick-change device for bar forging dies according to claim 1, characterized in that: The upper front side of the mold fixing frame (11) is provided with a limiting protrusion, and the bottom of the limiting protrusion is flush with the bottom of the mold docking groove (7) on the upper mold pressing seat (6).

6. The quick-change device for bar forging dies according to claim 5, characterized in that: A rubber anti-collision pad is fixedly connected to the upper end of the sliding upper mold base (14).

7. The quick-change device for bar forging dies according to claim 1, characterized in that: An auxiliary guide rod (5) is fixedly connected to the center of the rear side of the bottom of the upper die pressing base (6), and an auxiliary guide slot is opened on the front side of the forging worktable (1) corresponding to the auxiliary guide rod (5). Multiple auxiliary support springs (4) are provided between the bottom of the auxiliary guide slot on the front side of the forging worktable (1) and the bottom of the auxiliary guide rod (5).

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