Die forging press based on the manufacture of forgings for rail transit

Abstract

The present invention provides a die forging press for manufacturing forgings for rail transit, comprising a base, an upper forging die, a lower forging die and an ejection mechanism. The base has an open cavity. A fixed mounting seat is provided at the bottom of the open cavity, and a lifting mounting seat located above the fixed mounting seat is also provided in the open cavity. The upper forging die is fixedly arranged on the lifting mounting seat. The lower forging die can form a flash groove arranged around the die cavity with the upper forging die that descends along with the lifting mounting seat. A cavity is provided at the bottom of the lower forging die. The lower forging die is provided with a plurality of vertical through holes that pass through the cavity and the flash groove. The ejection mechanism has a plurality of ejection parts that can be adapted to each vertical through hole, and the ejection mechanism can push the workpiece in the die cavity upward through the flash in the flash groove when the upper forging die leaves the lower forging die. The die forging press for manufacturing forgings for rail transit provided by the present invention can facilitate the modification of the lower forging die, while improving the efficiency of the modification of the lower forging die, adapting to different workpieces, and having strong practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of forging, and in particular relates to a die forging press for manufacturing forgings for rail transit. Background Art

[0002] Forging is a processing method that uses forging machinery to apply pressure to metal blanks to cause them to undergo plastic deformation to obtain forgings with certain mechanical properties, shapes and sizes. According to the forming mechanism, forging can be divided into free forging, die forging, ring rolling and special forging. Among them, die forging is generally used to produce parts that are not heavy and have large batches, such as rail transit (including ordinary railways, intercity railways, urban railways, subways, light rails and trams, in addition to new types of rail transit such as magnetic levitation, high-speed rail, and monorail systems). It involves the manufacture of forgings for rail transit. Various types of forgings are of different sizes and have complex structures, so die forging presses are often used for this.

[0003] In the prior art, when a die forging press involves open die forging, it is usually necessary to eject the workpiece in order to better clamp it. At this time, an ejector rod is set in the flash groove to eject the workpiece formed in the forging die upward. However, once the ejection structure is set, due to the fixed setting of the ejection structure, the forging die is generally unchangeable (including the replacement of the forging die and the change of the number of forging dies). Therefore, a die forging press that can eject the workpiece can only adapt to one forging die. If the workpiece is changed, the forging die needs to be improved to ensure that it adapts to the ejection structure. The improvement process is time-consuming and labor-intensive, and it may be impossible to improve due to the large change in the size of the workpiece. This requires the die forging press to be redesigned, which will greatly increase the cost and poor practicality. Summary of the invention

[0004] An embodiment of the present invention provides a die forging press for manufacturing forgings for rail transit, aiming to solve the problem of poor practicality caused by the inability to adapt to the ejection structure during the process of changing the forging die of the existing die forging press.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a die forging press for manufacturing forgings for rail transit, comprising:

[0006] The base has an open cavity; a fixed mounting seat is provided at the bottom of the open cavity, and a lifting mounting seat is also provided in the open cavity and located above the fixed mounting seat;

[0007] An upper forging die is fixedly mounted on the lifting mounting seat;

[0008] A lower forging die is fixedly mounted on the fixed mounting seat, the lower forging die has a die cavity with an open top, and the lower forging die can form a flash groove surrounding the die cavity with the upper forging die that moves downward along with the lifting mounting seat; a cavity is provided at the bottom of the lower forging die; and a plurality of vertical through holes penetrating the cavity and the flash groove are provided on the lower forging die;

[0009] The ejection mechanism is arranged in the cavity at the bottom of the lower forging die, and has a plurality of ejection parts that can be adapted to each of the vertical through holes. The ejection mechanism is used to push the workpiece in the die cavity upward through the flash in the flash groove when the upper forging die leaves the lower forging die.

[0010] In a possible implementation, the ejection mechanism includes:

[0011] A lifting bottom plate is arranged in the cavity and has a plurality of T-shaped slots arranged in parallel and at intervals on the top;

[0012] There are multiple transposition members, each of which is arranged in one-to-one correspondence with each of the vertical through holes, and the top of each transposition member is the ejection portion;

[0013] A plurality of locking structures are provided, each of the locking structures corresponds to each of the transposition members, and is used to lock the corresponding transposition member on the bottom plate through the T-slot;

[0014] The driving assembly is connected to the lifting base plate and is used to drive the lifting base plate to move up and down.

[0015] In a possible implementation, each of the transposition components includes:

[0016] The connecting plate has two long strips at both ends, and the two long strips are arranged along the length direction of the connecting plate;

[0017] A column is integrally connected to the connecting plate, the column is located between the two long strip openings, the top end of the column passes through the corresponding vertical through hole, and the top end of the column is the ejection portion.

[0018] In a possible implementation manner, the connecting plate is a rectangular plate.

[0019] In a possible implementation manner, the length direction of the long strip opening is perpendicular to the length direction of the T-shaped slot.

[0020] In a possible implementation, two drive assemblies are provided, and the two drive assemblies are respectively arranged on both sides of the fixed mounting seat; each of the drive assemblies includes:

[0021] A lower fixing seat, fixed on the base, the lower fixing seat having a lower vertical sliding cavity, and a top end of the lower fixing seat being provided with a lower limit opening communicating with the lower vertical sliding cavity;

[0022] A slide plate is slidably disposed in the lower vertical slide cavity along a vertical direction, and one end of the slide plate extends horizontally out of the lower vertical slide cavity and is connected to the lifting bottom plate;

[0023] An upper fixed seat, fixed on the base, the upper fixed seat having an upper vertical sliding cavity, and the bottom end of the upper fixed seat is provided with an upper limit opening communicated with the upper vertical sliding cavity;

[0024] A slide rod is vertically arranged, with its bottom end passing through the lower limit opening and fixedly connected to the slide plate, and its top end passing through the upper limit opening and extending into the upper vertical slide cavity;

[0025] A traction structure, arranged on the slide bar and located above the lower fixing seat;

[0026] A linkage structure is arranged on the lifting mounting seat and is slidably connected with the slide rod. The linkage structure is used to be connected to the traction structure after the lifting mounting seat descends, and then after the lifting mounting seat ascends, the traction structure pulls the combination of the slide rod, the slide plate and the lifting bottom plate upward to enable each ejection part to eject the workpiece.

[0027] In a possible implementation, the traction structure includes:

[0028] A fixing plate, fixed on the sliding rod, the fixing plate having two ends extending outward horizontally;

[0029] There are two guide rods, both of which are arranged along the vertical direction, and the bottom ends of the two guide rods are respectively fixedly connected to the two protruding ends of the fixing plate;

[0030] A movable plate is slidably arranged on the sliding rod along the vertical direction and is slidably connected to the two guide rods, and the movable plate has two clamping ends for connecting the linkage structure;

[0031] There are two springs, which are respectively sleeved on the two guide rods. The bottom end of each spring is fixedly connected to the fixed plate, and the top end is fixedly connected to the movable plate.

[0032] In a possible implementation, the linkage structure includes:

[0033] An auxiliary seat, fixedly mounted on the lifting mounting seat, the auxiliary seat having a sliding hole slidably connected to the sliding rod, and also having two auxiliary holes slidably connected to the guide rod;

[0034] There are two flip card plates, which are respectively arranged at the two ends of the auxiliary seat and correspond to the two clamping ends one by one. Each flip card plate is rotatably connected to the auxiliary seat, and the rotation axis is horizontally arranged. The bottom end of each flip card plate is provided with a hook adapted to the clamping end;

[0035] There are two elastic members, and the two elastic members correspond to the two flip card plates respectively. The elastic members are used to bounce the corresponding flip card plates, and the flip card plates maintain a tendency to pitch downward and rotate, so that the hook remains in limited engagement with the engaging end.

[0036] In a possible implementation, two limit posts corresponding to the two flip clamping plates are respectively provided at the bottom end of the upper fixing seat;

[0037] Among them, the top of each flip card is provided with an inclined portion, and the flip card is used to contact the limiting column after the lifting mounting seat moves upward, and drive the flip card to pitch upward to make the hook contact the limiting clamping end.

[0038] In a possible implementation, a buffer rubber pad in contact with the slide plate is provided at the bottom of the lower vertical slide cavity.

[0039] In this implementation, the fixed mounting seat and the lifting mounting seat provided on the base can be fixedly installed for the lower forging die and the upper forging die respectively. The cavity provided at the bottom of the lower forging die can ensure the setting of the ejection mechanism, so that the ejection mechanism can extend into the flash groove to eject the forged workpiece, which is convenient for the staff to grab. The lower forging die is provided with a plurality of through holes, and the ejection mechanism is provided with a plurality of ejection parts that can be adapted to each through hole, that is, the ejection part can be adapted according to the position and number of the through holes, which can facilitate the change of the lower forging die, improve the efficiency of the change of the lower forging die, adapt to different workpieces, save equipment costs, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic structural diagram of a die forging press for manufacturing forgings for rail transit provided in an embodiment of the present invention;

[0041] Figure 2 A schematic structural diagram of a fixed mounting seat, a lower forging die, a lifting bottom plate, a position-changing member and a locking structure of a die forging press for manufacturing forgings for rail transit provided in an embodiment of the present invention;

[0042] Figure 3 for Figure 2 A schematic diagram of the structure of a die forging press for manufacturing forgings for rail transit provided by an embodiment of the present invention (the lower forging die is hidden);

[0043] Figure 4 A schematic diagram of the structure of a die forging press for manufacturing forgings for rail transit provided by an embodiment of the present invention (with the base hidden);

[0044] Figure 5 for Figure 4 A schematic side view of the structure of a die forging press for manufacturing forgings for rail transit provided in an embodiment;

[0045] Figure 6 for Figure 5 A partial cross-sectional structural schematic diagram of a die forging press for manufacturing forgings for rail transit provided in an embodiment;

[0046] Figure 7 A schematic diagram of the structure of a displacement piece in a die forging press for manufacturing forgings for rail transit provided by an embodiment of the present invention;

[0047] Description of reference numerals:

[0048] 10. Base; 11. Fixed mounting seat; 12. Lifting mounting seat;

[0049] 20. Upper forging die;

[0050] 30. lower forging die; 31. die cavity; 32. flash groove; 33. through hole;

[0051] 40. Ejection mechanism; 41. Lifting base plate; 411. T-slot; 42. Positioning member; 421. Connecting plate; 422. Column; 423. Long strip; 43. Locking structure; 44. Driving assembly; 441. Lower fixed seat; 4411. Lower vertical slide cavity; 442. Slide plate; 443. Upper fixed seat; 4431. Upper vertical slide cavity; 4432. Limiting column; 444. Slide bar; 445. Traction structure; 4451. Fixed plate; 4452. Guide rod; 4453. Moving plate; 4454. Spring; 446. Linkage structure; 4461. Auxiliary seat; 4462. Flip card plate; 4463. Elastic member; 4464. Hook; 4465. Inclined portion; 45. Buffer rubber pad. DETAILED DESCRIPTION

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] Please also read Figure 1 , Figure 3 and Figure 4, the die forging press based on the manufacture of forgings for rail transit provided by the present invention is now described. The die forging press based on the manufacture of forgings for rail transit comprises a base 10, an upper forging die 20, a lower forging die 30 and an ejection mechanism 40. Among them, the base 10 has an open cavity. A fixed mounting seat 11 is provided at the bottom of the open cavity, and a lifting mounting seat 12 located above the fixed mounting seat 11 is also provided in the open cavity. The upper forging die 20 is fixed on the lifting mounting seat 12. The lower forging die 30 is fixed on the fixed mounting seat 11, and the lower forging die 30 has a die cavity 31 with an open top. The lower forging die 30 can form a flash groove 32 arranged around the die cavity 31 with the upper forging die 20 that descends with the lifting mounting seat 12. A cavity is provided at the bottom of the lower forging die 30. The lower forging die 30 is provided with a plurality of vertical through holes 33 that pass through the cavity and the flash groove 32. The ejection mechanism 40 is arranged in the cavity at the bottom of the lower forging die 30 and has a plurality of ejection parts that can be adapted to the vertical through holes 33. The ejection mechanism 40 can push the workpiece in the die cavity 31 upward through the flash in the flash groove 32 when the upper forging die 20 leaves the lower forging die 30.

[0054] The die forging press provided in this embodiment for manufacturing rail transit forgings has a working principle in that the ejector can be adapted according to the number and position of the through holes 33 on the lower forging die 30 to adapt to different lower forging dies 30. Figure 2 and Figure 3 .

[0055] Compared with the prior art, the die forging press provided in this embodiment for manufacturing forgings for rail transit has a fixed mounting seat 11 and a lifting mounting seat 12 provided on the base 10, which can be used for fixing and mounting the lower forging die 30 and the upper forging die 20, respectively. The cavity provided at the bottom of the lower forging die 30 can ensure the provision of the ejection mechanism 40, so that the ejection mechanism 40 can extend into the flash groove 32 to eject the forged workpiece, which is convenient for the staff to grab. The lower forging die 30 is provided with a plurality of through holes 33, and the ejection mechanism 40 is correspondingly provided with a plurality of ejection parts that can be adapted to each through hole 33, that is, the ejection part can be adapted according to the position and number of the through holes 33, which can facilitate the modification of the lower forging die 30, and at the same time improve the modification efficiency of the lower forging die 30, adapt to different workpieces, and at the same time save equipment costs, and has strong practicality.

[0056] In this embodiment, the upper forging die 20 does not involve the ejection mechanism 40, so it can be replaced according to the replacement of the lower forging die 30. Preferably, a connecting groove can be set on the fixed mounting seat 11 and the lifting mounting seat 12, and the lower forging die 30 and the upper forging die 20 can be locked in the corresponding connecting groove by bolts. This installation method is a conventional setting for those skilled in the art, and can be seen in Figure 4 , I will not go into details here.

[0057] In addition, it is also necessary to explain that there can be multiple die cavities 31. When it comes to die forging, multiple processes may be required to complete the forging of the workpiece. Therefore, multiple die cavities 31 can be set on the lower forging die 30, and correspondingly, multiple contact portions adapted to each die cavity 31 are also set on the upper forging die 20. This technology is an existing technology for die forging and will not be repeated here.

[0058] In some embodiments, the ejection mechanism 40 may be configured as follows: Figures 2 to 4 See the structure shown. Figures 2 to 4 The ejection mechanism 40 includes a lifting base plate 41, a transposition member 42, a locking structure 43 and a driving assembly 44. The lifting base plate 41 is arranged in a cavity, and has a plurality of T-slots 411 arranged in parallel and spaced apart on the top. There are a plurality of transposition members 42, each of which corresponds to each vertical through hole 33, and the top of each transposition member 42 is an ejection portion. There are a plurality of locking structures 43, each of which corresponds to each transposition member 42, and can lock the corresponding transposition member 42 on the base plate through the T-slot 411. The driving assembly 44 is connected to the lifting base plate 41, and can drive the lifting base plate 41 to move up and down.

[0059] The lifting base plate 41 can rise under the drive of the driving assembly 44, thereby driving the position change member 42 to rise, and the ejection part to rise, so as to eject the workpiece through the burr in the burr groove 32, which is convenient for the staff to clamp and pick up the workpiece.

[0060] Each locking structure 43 can lock each shifting member 42 on the lifting base plate 41 through a T-slot 411, and the top of each shifting member 42 is a ejection portion. This structure can ensure that the position of each shifting member 42 can be adjusted, and at the same time, the number of shifting members 42 can be changed to ensure that different numbers and / or different numbers of through holes 33 can be adapted, thereby ensuring convenient replacement of the lower forging die 30.

[0061] In some embodiments, the above-mentioned position change member 42 can be used as follows Figure 3 and Figure 7 See the structure shown. Figure 3 and Figure 7 Each transposition member 42 includes a connecting plate 421 and a column 422. The two ends of the connecting plate 421 are respectively provided with a long strip opening 423, and the two long strip openings 423 are arranged along the length direction of the connecting plate 421. The column 422 is integrally connected with the connecting plate 421, and the column 422 is located between the two long strip openings 423. The top of the column 422 passes through the corresponding vertical through hole 33, and the top of the column 422 is the ejection part.

[0062] The connecting plate 421 can be conveniently locked in the two T-slots 411 through the locking structure 43, ensuring the locking stability of the connecting plate 421 and the fixation of the position of the column 422, thereby ensuring that the column 422 can be smoothly slidably connected with the through hole 33, facilitating the ejection of the workpiece.

[0063] In this embodiment, regarding the locking structures 43 , each locking structure 43 may include two bolts, and the two bolts correspond to the two long strip openings 423 respectively, so as to ensure that the two long strip openings 423 are connected to the two T-slots 411 respectively.

[0064] In some embodiments, the connecting plate 421 may be formed as follows: Figure 7 See the structure shown. Figure 7 The connecting plate 421 is a rectangular plate with a simple structure and is easy to manufacture.

[0065] It should be noted that the length of the connecting plate 421 needs to be at least greater than the spacing between the two T-slots 411. Of course, multiple connecting plates 421 of different lengths can be provided, and some connecting plates 421 can be connected to three T-slots 411 at the same time, and some connecting plates 421 can be connected to two T-slots 411 at the same time, so as to ensure the stability of the connecting plate 421 and avoid interference with the inner wall of the cavity of the lower forging die 30.

[0066] In some embodiments, the above-mentioned position change member 42 can be used as follows Figure 3 and Figure 7 See the structure shown. Figure 3 and Figure 7 The length direction of the long strip opening 423 is perpendicular to the length direction of the T-slot 411. This structure can ensure that the position of the column 422 on the horizontal plane can be adjusted arbitrarily, and further ensure that the through holes 33 at different positions are adapted, and has strong adaptability.

[0067] In some embodiments, the drive assembly 44 may be configured as follows: Figures 4 to 6 See the structure shown. Figures 4 to 6 Considering that the current ejector usually uses a telescopic structure at the bottom of the base 10 to eject the workpiece, but the telescopic structure needs to be arranged according to the lifting bottom plate 41 of different specifications, and needs to occupy the space inside the base 10, mainly the space of the fixed mounting seat 11. In addition, a hydraulic pump or air pump needs to be separately arranged, which is costly and inconvenient to manufacture. In this regard, a driving assembly 44 is proposed. There are two driving assemblies 44, and the two driving assemblies 44 are respectively arranged on both sides of the fixed mounting seat 11. Each driving assembly 44 includes a lower fixed seat 441, a slide plate 442, an upper fixed seat 443, a slide bar 444, a traction structure 445 and a linkage structure 446.

[0068] Specifically, the lower fixed seat 441 is fixed on the base 10, and the lower fixed seat 441 has a lower vertical sliding cavity 4411, and the top of the lower fixed seat 441 is provided with a lower limit opening connected to the lower vertical sliding cavity 4411. The slide plate 442 is slidably arranged in the lower vertical sliding cavity 4411 along the vertical direction, and one end of the slide plate 442 extends horizontally from the lower vertical sliding cavity 4411 and is connected to the lifting bottom plate 41. The upper fixed seat 443 is fixed on the base 10, and the upper fixed seat 443 has an upper vertical sliding cavity 4431, and the bottom end of the upper fixed seat 443 is provided with an upper limit opening connected to the upper vertical sliding cavity 4431. The slide bar 444 is arranged vertically, and the bottom end is fixedly connected to the slide bar 442 after passing through the lower limit opening, and the top end passes through the upper limit opening and extends into the upper vertical sliding cavity 4431. The traction structure 445 is arranged on the slide bar 444 and is located above the lower fixed seat 441. The linkage structure 446 is arranged on the lifting mounting seat 12 and is slidably connected with the slide rod 444. The linkage structure 446 can be connected to the traction structure 445 after the lifting mounting seat 12 moves downward. Then, after the lifting mounting seat 12 moves upward, the traction structure 445 pulls the combination of the slide rod 444, the slide plate 442 and the lifting bottom plate 41 to move upward, so that each ejection part ejects the workpiece.

[0069] First, the two driving components 44 are respectively arranged on both sides of the fixed mounting seat 11, and are respectively connected to the lifting base plate 41 through the slide plate 442, which can ensure that the lifting base plate 41 is subjected to uniform force, thereby ensuring the stability of the lifting base plate 41 and the effect of the workpiece being ejected.

[0070] The lower fixed seat 441 provided in each driving assembly 44 provides a lower vertical sliding cavity 4411, and the upper fixed seat 443 provides an upper vertical sliding cavity 4431. The lower vertical sliding cavity 4411 and the upper vertical sliding cavity 4431 can ensure the sliding limit of the sliding rod 444 in the vertical direction, and the bottom end of the sliding rod 444 is connected to the slide plate 442, that is, the sliding rod 444, the slide plate 442 and the lifting bottom plate 41 are an integrated connection structure, and the lifting process is consistent. This structure can ensure that the vertical drive of the sliding rod 444 can drive the lifting and moving of the lifting bottom plate 41. The linkage structure 446 provided on the lifting mounting seat 12 can drive the sliding rod 444 to move up and down through the traction structure 445 provided on the sliding rod 444, thereby ensuring that the lifting bottom plate 41 is driven to move up and down.

[0071] Specifically, after the lifting mounting seat 12 drives the upper forging die 20 downward, its linkage structure 446 will be connected with the traction structure 445. When the forging work is completed, the lifting mounting seat 12 drives the upper forging die 20 upward, and the linkage structure 446 will pull the traction structure 445 upward, and then pull the slide rod 444 upward through the traction structure 445, and then the slide plate 442 drives the lifting bottom plate 41 to move upward, so that each ejection part extends upward from each flash groove 32, so as to eject the workpiece in the mold cavity 31 out of the mold cavity 31, and the staff can clamp the workpiece at this time.

[0072] It should be noted that a vertical opening is provided on one side of the lower vertical slide cavity 4411 for one end of the slide plate 442 to pass through, as shown in FIG. Figure 4 At the same time, a connecting port for the slide plate 442 to pass through is provided on the lower forging die 30 to facilitate the fixed connection between the slide plate 442 and the lifting base plate 41.

[0073] In some embodiments, the traction structure 445 may be implemented as follows: Figure 5 See the structure shown. Figure 5 The traction structure 445 includes a fixed plate 4451, a guide rod 4452, a movable plate 4453 and a spring 4454. The fixed plate 4451 is fixed on the slide rod 444, and the fixed plate 4451 has two ends extending outward horizontally. Two guide rods 4452 are provided, and the two guide rods 4452 are both provided in the vertical direction. The bottom ends of the two guide rods 4452 are respectively fixedly connected with the two extended ends of the fixed plate 4451. The movable plate 4453 is slidably provided on the slide rod 444 along the vertical direction, and is slidably connected with the two guide rods 4452. The movable plate 4453 has two clamping ends for connecting the linkage structure 446. Two springs 4454 are provided, and the two springs 4454 are respectively sleeved on the two guide rods 4452. The bottom end of each spring 4454 is fixedly connected with the fixed plate 4451, and the top end is fixedly connected with the movable plate 4453.

[0074] The fixed plate 4451 is fixedly connected to the slide bar 444, while the movable plate 4453 is slidably connected to the slide bar 444, and the two are elastically connected by two springs 4454, which can ensure that the two are evenly stressed. The setting of the guide rod 4452 can ensure the position limitation of the two springs 4454, and prevent the two springs 4454 from being separated due to outward bounce during the compression process.

[0075] The linkage structure 446 can be connected to the clamping end on the movable plate 4453. After the linkage structure 446 moves upward, it can pull the movable plate 4453 upward. At the same time, the two springs 4454 are stretched. When the pulling force is greater than the gravity of the lifting base plate 41, the sliding rod 444 and the sliding plate 442, the lifting base plate 41 will move upward to enable the ejection part to eject the workpiece.

[0076] At the same time, the distance of the lower vertical sliding cavity 4411 in the vertical direction is limited, that is, the lifting and sliding stroke of the slide plate 442 is prioritized. Therefore, when the slide plate 442 moves to the highest point, the spring 4454 will remain in a stretched state to ensure compensation for the moving stroke of the lifting mounting seat 12.

[0077] In addition, during the downward movement of the lifting mount 12 , after the linkage structure 446 contacts the movable plate 4453 , the movable plate 4453 will move downward for a certain distance along with the linkage structure 446 . At this time, the spring 4454 is compressed, which can also ensure the buffering effect on the lifting mount 12 .

[0078] In this embodiment, the connection method between the spring 4454 and the fixed plate 4451 and the movable plate 4453 can be welding.

[0079] In some embodiments, the linkage structure 446 may be implemented as follows: Figure 6 See the structure shown. Figure 6 The linkage structure 446 includes an auxiliary seat 4461, a flip card plate 4462 and an elastic member 4463. The auxiliary seat 4461 is fixed on the lifting mounting seat 12. The auxiliary seat 4461 has a sliding hole slidably connected to the sliding rod 444, and is also provided with two auxiliary holes slidably connected to the guide rods 4452. There are two flip card plates 4462, which are respectively arranged at the two ends of the auxiliary seat 4461 and correspond to the two clamping ends one by one. Each flip card plate 4462 is rotatably connected to the auxiliary seat 4461, and the rotation axis is arranged horizontally. The bottom end of each flip card plate 4462 is provided with a hook 4464 adapted to the clamping end. There are two elastic members 4463, which correspond to the two flip cards 4462 respectively. The elastic members 4463 can bounce the corresponding flip cards 4462, and the flip cards 4462 maintain a tendency to rotate downward in pitch, so that the hook 4464 remains in a limited engagement with the engaging end.

[0080] The provision of the two flip clamping plates 4462 can ensure that after being clamped with the moving plate 4453, the force on the moving plate 4453 is uniform, thereby ensuring that the moving plate 4453 drives the moving plate 4453.

[0081] The flip card plate 4462 can be pitched and rotated. Under the action of the elastic member 4463, it will maintain the tendency of pitching and rotating downward, thereby ensuring that the hook 4464 can be engaged with the engaging end. Figure 6, the hook 4464 of the flip card plate 4462 can be engaged with the bottom end surface of the moving plate 4453, thereby limiting the moving plate 4453 in the vertical direction. Preferably, in order to prevent the flip card plate 4462 from flipping excessively, a limiting surface that abuts against the bottom of the flip card plate 4462 can be provided on the auxiliary seat 4461 to ensure that the maximum position of the flip card plate 4462 when flipping downward is fixed, preferably vertical. The bottom end of the hook 4464 is provided with an inclined surface to ensure stable sliding into the card end.

[0082] The auxiliary seat 4461 moves synchronously with the lifting mounting seat 12. During the downward process, the hook 4464 at the bottom of the flip card plate 4462 can be adapted and connected with the connecting end on the movable plate 4453, thereby ensuring that the movable plate 4453 moves upward with the auxiliary seat 4461, ensuring that the lifting base plate 41 is pulled up.

[0083] The elastic member 4463 may be a torsion spring disposed on the rotating shaft of the flip card plate 4462, or a spring 4454 disposed on the auxiliary seat 4461 and abutting against the top end of the flip card plate 4462. The installation structure of the torsion spring or the spring 4454 is prior art and will not be described in detail here.

[0084] In some embodiments, the drive assembly 44 may be configured as follows: Figure 6 See the structure shown. Figure 6 The bottom end of the upper fixing seat 443 is provided with two limiting posts 4432 corresponding to the two flip clamping plates 4462 respectively.

[0085] Among them, the top of each flip card plate 4462 is provided with a sloped portion 4465. After the flip card plate 4462 moves upward with the lifting mounting seat 12, the sloped portion 4465 contacts the limiting column 4432 and drives the flip card plate 4462 to rotate upward in pitch so that the hook 4464 contacts the limiting clamping end.

[0086] The limiting column 4432 can be adapted to the inclined portion 4465 at the top of the flip card plate 4462 to ensure that after the flip card plate 4462 moves up to the moving height along with the auxiliary seat 4461, the limiting portion can bend the top of the flip card plate 4462 to make the flip card plate 4462 pitch and rotate upward, thereby making the hook 4464 disengage from the clamping limit on the moving plate 4453, so as to contact the connection between the linkage structure 446 and the traction structure 445, thereby ensuring that the sliding column, the slide plate 442 and the lifting base plate 41 move downward due to their own gravity, so that the ejection portion is retracted into each sliding hole. This structure can avoid interference between the ejection portion and the workpiece during the process of workpiece replacement or workpiece loading.

[0087] Regarding the driving assembly 44 involved in the above embodiment, its specific working principle or working steps are as follows: the lifting mounting seat 12 drives the upper forging die 20 downward, and forges the blank in the die cavity 31 together with the lower forging die 30. In this process, the lifting mounting seat 12 drives the auxiliary seat 4461 downward and contacts the moving plate 4453, the spring 4454 is compressed, but the two flip clamps 4462 on the auxiliary seat 4461 are clamped with the moving plate 4453 through the clamping hooks 4464, see Figure 6 When the lifting mounting seat 12 moves upward, the auxiliary seat 4461 moves upward. At this time, the auxiliary seat 4461 will lift the movable plate 4453 by flipping the card plate 4462, and the movable seat will lift the fixed plate 4451 through the spring 4454. The spring 4454 will be subjected to tension. When the tension of the spring 4454 is greater than the gravity of the sliding column, the slide plate 442 and the lifting bottom plate 41, the sliding column, the slide plate 442 and the lifting bottom plate 41 will move upward, and then each column 422 will extend into each through hole 33 to push the workpiece out. As the lifting mounting seat 12 continues to move upward, the top inclined surface of the flip card plate 4462 will contact the limiting column 4432, thereby bending the flip card plate 4462 to rotate upward, so that the hook 4464 disengages from the limiting connection with the movable plate 4453. At this time, the movable plate 4453 will move downward, and the sliding column, the sliding plate 442 and the lifting bottom plate 41 will all move downward under the action of gravity, so that each column 422 can be retracted into each through hole 33.

[0088] This structure does not need an external power source, and the lifting and lowering control of each column 422 can be achieved only by the lifting and lowering movement of the lifting mounting seat 12, which is highly practical.

[0089] In addition, the lifting and moving of the lifting mounting seat 12 can be achieved through a hydraulic cylinder or a crank connecting rod structure. The lifting and moving adjustment of the lifting mounting seat 12 is well known to those skilled in the art and will not be described in detail here.

[0090] In some embodiments, the lower fixing seat 441 may be configured as follows: Figure 6 See the structure shown. Figure 6 A buffer rubber pad 45 in contact with the slide plate 442 is provided at the bottom of the lower vertical slide cavity 4411 .

[0091] Because during the downward movement of the slide column, the slide plate 442 and the lifting base plate 41, they will be affected by the elastic force of the spring 4454 and their own gravity. Therefore, when they descend to the lowest point, they will have a certain impact on the fixed mounting seat 11. Therefore, the buffer rubber pad 45 arranged at the bottom end of the vertical slide cavity can buffer and abut the slide plate 442 to avoid the impact of the lifting base plate 41 on the fixed mounting seat 11, thereby ensuring the protection of the fixed mounting seat 11.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A die forging press for manufacturing forgings for rail transit, characterized in that: include: The base has an open cavity; a fixed mounting seat is provided at the bottom of the open cavity, and a lifting mounting seat is also provided in the open cavity and located above the fixed mounting seat; An upper forging die is fixedly mounted on the lifting mounting seat; A lower forging die is fixedly mounted on the fixed mounting seat, the lower forging die has a die cavity with an open top, and the lower forging die can form a flash groove surrounding the die cavity with the upper forging die that moves downward along with the lifting mounting seat; a cavity is provided at the bottom of the lower forging die; and a plurality of vertical through holes penetrating the cavity and the flash groove are provided on the lower forging die; The ejection mechanism is arranged in the cavity at the bottom of the lower forging die, and has a plurality of ejection parts that can be adapted to the vertical through holes. The ejection mechanism is used to push the workpiece in the die cavity upward through the flash in the flash groove when the upper forging die leaves the lower forging die; the ejection mechanism includes a lifting bottom plate, a displacement member, a locking structure and a driving assembly; the lifting bottom plate is arranged in the cavity, and has a plurality of T-slots arranged in parallel and at intervals on the top; there are a plurality of displacement members, each of which is arranged in a one-to-one correspondence with each of the vertical through holes, and each The top of the transposition member is the ejection portion; there are multiple locking structures, each of which corresponds to each transposition member one by one, and is used to lock the corresponding transposition member on the bottom plate through the T-slot; the driving component is connected to the lifting bottom plate, and is used to drive the lifting bottom plate to move up and down; there are two driving components, and the two driving components are respectively arranged on both sides of the fixed mounting seat; each driving component includes a lower fixed seat, a slide plate, an upper fixed seat, a slide rod, a traction structure and a linkage structure; the lower fixed seat The cam is fixed on the base, the lower fixed seat has a lower vertical sliding cavity, and the top of the lower fixed seat is provided with a lower limit opening connected to the lower vertical sliding cavity; the slide plate is slidably arranged in the lower vertical sliding cavity along the vertical direction, and one end of the slide plate is connected to the lifting bottom plate after horizontally extending out of the lower vertical sliding cavity; the upper fixed seat is fixed on the base, the upper fixed seat has an upper vertical sliding cavity, and the bottom end of the upper fixed seat is provided with an upper limit opening connected to the upper vertical sliding cavity; the sliding rod is vertically arranged, and the bottom end is connected to the lifting bottom plate after passing through the lower limit opening The slide plate is fixedly connected, and the top end passes through the upper limit opening and extends into the upper vertical slide cavity; the traction structure is arranged on the slide bar and is located above the lower fixed seat; the linkage structure is arranged on the lifting mounting seat and is slidably connected with the slide bar, and the linkage structure is used to connect with the traction structure after the lifting mounting seat moves downward, and then after the lifting mounting seat moves upward, the combination of the slide bar, the slide plate and the lifting bottom plate is pulled upward by the traction structure, so that each ejection part ejects the workpiece; Material toggling mechanism, its both sides respectively have the support of the support frame, and the support frame has two end portions that are fixed on the support frame, and the support frame has two end portions that are horizontally extended outwardly. There are two guide rods, and the two guide rods are arranged in a vertical direction, and the bottom ends of the two guide rods are fixedly connected to the two extended ends of the fixed plate respectively. The movable plate is slidably arranged on the sliding rod along the vertical direction, and is slidably connected with the two guide rods, and the movable plate has two clamping ends for connecting the linkage structure. There are two springs, and the two springs are respectively sleeved on the two guide rods, and the bottom end of each spring is fixedly connected to the fixed plate, and the top end is fixedly connected to the movable plate. In which, the linkage structure includes an auxiliary seat, a flip card plate and an elastic member; the auxiliary seat is fixed on the lifting mounting seat, the auxiliary seat has a sliding hole slidably connected to the sliding rod, and is also provided with two auxiliary holes slidably connected to the guide rods; there are two flip card plates, the two flip card plates are respectively arranged at both ends of the auxiliary seat, and correspond one-to-one with the two clamping ends, each of the flip card plates is rotatably connected to the auxiliary seat, and the rotation axis is horizontally arranged, and the bottom end of each flip card plate is provided with a hook adapted to the clamping end; there are two elastic members, the two elastic members correspond one-to-one to the two flip card plates respectively, and the elastic member is used to bounce the corresponding flip card plate, and the flip card plate maintains a tendency to rotate downward in pitch, so that the hook remains in limited clamping connection with the clamping end.

2. The die forging press for manufacturing forgings for rail transit according to claim 1, characterized in that: Each of the transposition members comprises: The connecting plate has two long strips at both ends, and the two long strips are arranged along the length direction of the connecting plate; A column is integrally connected to the connecting plate, the column is located between the two long strip openings, the top end of the column passes through the corresponding vertical through hole, and the top end of the column is the ejection portion.

3. The die forging press for manufacturing forgings for rail transit according to claim 2, characterized in that: The connecting plate is a rectangular plate.

4. The die forging press for manufacturing rail transit forgings according to claim 2, characterized in that: The length direction of the long strip opening is perpendicular to the length direction of the T-shaped slot.

5. The die forging press for manufacturing forgings for rail transit according to claim 1, characterized in that: The bottom end of the upper fixing seat is provided with two limiting columns corresponding to the two flip clamping plates respectively; Among them, the top of each flip card is provided with an inclined portion, and the flip card is used to contact the limiting column after the lifting mounting seat moves upward, and drive the flip card to pitch upward to make the hook contact the limiting clamping end.

6. The die forging press for manufacturing forgings for rail transit according to claim 1, characterized in that: A buffer rubber pad in contact with the slide plate is provided at the bottom of the lower vertical slide cavity.

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