Liquid forging die for flywheel casing of heavy truck engine

Abstract

The utility model provides a liquid die forging die for a flywheel casing of a heavy truck engine, which belongs to the technical field of dies and comprises an upper die, a middle die and a lower die, die locking mechanisms are arranged at four corners of the middle die, each die locking mechanism comprises an oil cylinder, a locking piece, an upper locking rod and a lower locking rod, an upper linkage hole and a lower linkage hole are arranged on the locking piece, and the upper linkage hole is communicated with the lower linkage hole. The upper linkage hole comprises an upper locking part and an upper unlocking part, the lower linkage hole comprises a lower locking part and a lower unlocking part, upper locking holes corresponding to the upper locking rods are formed in the upper die, lower locking holes corresponding to the lower locking rods are formed in the lower die, the upper ends of the upper locking rods penetrate through the upper locking holes and are provided with upper locking blocks, and the lower ends of the upper locking rods penetrate through the upper linkage hole and are provided with first locking parts. The lower end of the lower locking rod penetrates through the lower locking hole and is provided with a lower locking block, the upper end of the lower locking rod penetrates through the lower linkage hole and is provided with a second locking part, linkage locking and unlocking among the upper die, the middle die and the lower die are achieved, the integrated design is adopted, occupied space of the die is reduced, and the structural layout of the die is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, concretely relates to a heavy truck engine flywheel shell liquid die forging die. BACKGROUND

[0002] Liquid die forging die is a high-precision tool specially used for liquid die forging process, usually made of high-strength, high-temperature-resistant alloy steel. Its design needs to ensure shape stability under high temperature and high pressure conditions, and can effectively withstand the impact and pressure of liquid metal. The inside of the die is designed with a complex runner system to ensure uniform filling and rapid solidification of liquid metal, thereby producing high-strength, high-precision parts. Liquid die forging die has been widely used in high-tech fields such as automobiles and aerospace due to its efficient heat conduction and excellent mechanical properties.

[0003] For example, Figure 13 The heavy truck engine flywheel shell has a complex structure and shape, which increases the difficulty of designing the liquid die forging die, especially in the locking mechanism. Currently, most of them use simple locking rods inserted into locking grooves for locking. When dealing with multi-opening dies, a large number of locking mechanisms need to be set, which not only occupies space but also ensures the synchronization between the locking mechanisms. SUMMARY

[0004] The utility model aims at overcoming the shortcomings and deficiencies of prior art, and provides a heavy truck engine flywheel shell liquid die forging die.

[0005] The technical scheme adopted by the utility model is as follows: the present application provides a heavy truck engine flywheel shell liquid die forging die, which comprises an upper die, a middle die and a lower die, the middle die is provided with a locking mechanism at each corner, the locking mechanism comprises a oil cylinder, a locking piece, an upper locking rod and a lower locking rod, the locking piece is provided with an upper linkage hole and a lower linkage hole, the upper linkage hole comprises an upper locking part and an upper unlocking part, the lower linkage hole comprises a lower locking part and a lower unlocking part, the upper die is provided with an upper locking hole corresponding to each upper locking rod, and the lower die is provided with a lower locking hole corresponding to each lower locking rod.

[0006] The upper end of the upper locking rod passes through the upper locking hole and is provided with an upper locking block, and the lower end passes through the upper linkage hole and is provided with a first locking part, the upper locking block cannot pass through the upper locking hole, and the first locking part can pass through the upper unlocking part but cannot pass through the upper locking part;

[0007] The lower end of the lower locking rod passes through the lower locking hole and is provided with a lower locking block, and the upper end passes through the lower linkage hole and is provided with a second locking part, the lower locking block cannot pass through the lower locking hole, and the second locking part can pass through the lower unlocking part but cannot pass through the lower locking part;

[0008] The locking member is translated by the oil cylinder to have an upper closed state of locking the upper die and the middle die and unlocking the lower die and the middle die, and a lower closed state of locking the lower die and the middle die and unlocking the upper die and the middle die.

[0009] When the locking member is in the upper closed state, the upper locking rod is located in the upper locking part and the lower locking rod is located in the lower unlocking part.

[0010] When the locking member is in the lower closed state, the upper locking rod is located in the upper unlocking part and the lower locking rod is located in the lower locking part.

[0011] In some embodiments, the die locking mechanism further comprises a fixed shell, the middle die is provided with a mounting groove at each of the four corners, the fixed shell is provided with a sliding channel, and the locking member is slidingly arranged in the sliding channel.

[0012] In some embodiments, the mounting groove comprises a first opening and a second opening arranged in an L shape, the oil cylinder is arranged on one side of the fixed shell facing the first opening, a fastener is arranged on the side of the fixed shell facing the second opening to connect the fixed shell and the middle die, and a state indicating mark is arranged.

[0013] In some embodiments, the upper die is provided with an upper die core, a left die core, a right die core, a front die core and a rear die core, and the middle die is provided with a lower die core, and the left die core, the right die core, the front die core and the rear die core are each provided with a cooling channel.

[0014] In some embodiments, four die opening and closing mechanisms are further included, the left die core, the right die core, the front die core and the rear die core are arranged in a cross shape, the die opening and closing mechanisms are arranged behind the left die core, the right die core, the front die core and the rear die core respectively, the die opening and closing mechanism comprises a moving block, a fixed block and a linkage rod, the moving block is slidingly arranged on the upper die, the fixed block is arranged on the middle die, one end of the moving block is connected to the corresponding die core, the other end is provided with a first inclined surface, the side of the fixed block close to the lower die core is provided with a second inclined surface matched with the first inclined surface, the linkage rod comprises a vertical rod part fixed to the middle die and an inclined rod part inclined away from the lower die core at the upper end, and the moving block is provided with a linkage inclined hole matched with the inclined rod part, when the upper die and the middle die are opened and closed, the moving block moves towards or away from the upper die core under the cooperation of the inclined rod part and the linkage inclined hole.

[0015] In some embodiments, the moving block behind the left die core and the right die core is provided with a core pulling shaft, and the left die core and the right die core are provided with through holes for the core pulling shaft to pass through.

[0016] In some embodiments, the moving block is provided with a sliding rail on the upper end face and the two side end faces close to the upper die, and is connected to the upper die through the sliding rail.

[0017] In some embodiments, an upper end of the inclined rod portion is provided with a guide portion.

[0018] The utility model discloses the beneficial effect is as follows: the utility model discloses through setting lock die mechanism in middle mould four corners, and adopts single locking piece and oil cylinder drive mode, realizes the linkage locking and unlocking between upper die, middle mould, lower die. Secondly, through the integration of upper linkage hole and lower linkage hole on locking piece, and through the accurate positioning of locking portion and unlocking portion of linkage hole, realizes the linkage operation of upper lock rod and lower lock rod, adopts the integrated design to reduce the occupation to die space, optimizes the structure layout of die, is very suitable for the die forging demand of the parts such as flywheel shell complex shape, space limited. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, under the premise of not paying the creative labor, according to these drawings, other drawings still belong to the scope of the utility model.

[0020] Figure 1 It is a schematic diagram of a heavy truck engine flywheel shell liquid die forging die in the utility model;

[0021] Figure 2 It is a partial explosion view of a heavy truck engine flywheel shell liquid die forging die in the utility model;

[0022] Figure 3 It is the explosion of the lock die mechanism in the utility model Figure 1 ;

[0023] Figure 4 It is the explosion of the lock die mechanism in the utility model Figure 2 ;

[0024] Figure 5 It is a sectional view of a heavy truck engine flywheel shell liquid die forging die in the utility model;

[0025] Figure 6 It is a partial schematic view of a heavy truck engine flywheel shell liquid die forging die in the utility model;

[0026] Figure 7 It is an explosion view of a heavy truck engine flywheel shell liquid die forging die in the utility model;

[0027] Figure 8 It is a schematic view of the upper die in the utility model;

[0028] Figure 9 It is a schematic view of the utility model's moving block.

[0029] Figure 10 It is the schematic view of fixed block in the utility model;

[0030] Figure 11 It is the schematic view of linkage rod in the utility model;

[0031] Figure 12 It is the schematic view of mold opening and closing mechanism in the utility model;

[0032] Figure 13 It is the schematic view of a heavy truck engine flywheel housing in the utility model. DETAILED DESCRIPTION

[0033] The following description provides specific application scenarios and requirements of the present specification, with the purpose of enabling those skilled in the art to manufacture and use the contents of the present specification. Various partial modifications of the disclosed embodiments are obvious to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the present specification. Therefore, the present specification is not limited to the shown embodiments, but is consistent with the widest scope of the claims.

[0034] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] Secondly, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components, and should not be understood as a limitation on the embodiments of the present application.

[0036] In addition, the terms "mounting", "setting", "providing", "connecting", "connecting" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components.

[0037] For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] With respect to the drawings accompanying the present application, it should be readily understood that the drawings are merely for purposes of illustration and description and are not intended to limit the scope of the present application in any way. It is to be further understood that the drawings are not drawn to scale.

[0039] As Figure 13 shown, wherein A is a heavy truck engine flywheel housing, which has complex structure and shape, making the design of liquid die forging die significantly increased, especially in the design of the locking mechanism. At present, most of the dies use the traditional way of locking rod inserted into the locking slot for locking. However, when the die needs multiple parting surfaces or multiple die opening design, more locking mechanisms are often needed. This not only occupies the limited die space, but also puts higher requirements on the synchronization between each locking mechanism, increases the design and processing difficulty, and may affect the reliability and efficiency of the die operation.

[0040] Based on the above problems, as Figures 1 to 12As shown, the application provides a heavy truck engine flywheel housing liquid die forging die, which comprises an upper die 1, a middle die 2 and a lower die 3, the four corners of the middle die 2 are provided with a locking mechanism 4, the locking mechanism 4 comprises a oil cylinder 40, a locking piece 41, an upper locking rod 42 and a lower locking rod 43, the locking piece 41 is provided with an upper linkage hole 410 and a lower linkage hole 411, the upper linkage hole 410 comprises an upper locking part 4100 and an upper unlocking part 4101, the lower linkage hole 411 comprises a lower locking part 4110 and a lower unlocking part 4111, the upper die 1 is provided with an upper locking hole 100 corresponding to each upper locking rod 42, and the lower die 3 is provided with a lower locking hole 300 corresponding to each lower locking rod 43; the upper end of the upper locking rod 42 passes through the upper locking hole 100 and is provided with an upper locking block 44, the lower end passes through the upper linkage hole 410 and is provided with a first locking part 420, the upper locking block 44 cannot pass through the upper locking hole 100, the first locking part 420 can pass through the upper unlocking part 4101 and cannot pass through the upper locking part 4100; the lower end of the lower locking rod 43 passes through the lower locking hole 300 and is provided with a lower locking block 45, the upper end passes through the lower linkage hole 411 and is provided with a second locking part 430, the lower locking block 45 cannot pass through the lower locking hole 300, the second locking part 430 can pass through the lower unlocking part 4111 and cannot pass through the lower locking part 4110; under the drive of the oil cylinder 40, the locking piece 41 has an upper closed state of locking the upper die 1 and the middle die 2 and unlocking the lower die 3 and the middle die 2, and a lower closed state of locking the lower die 3 and the middle die 2 and unlocking the upper die 1 and the middle die 2; when the locking piece 41 is in the upper closed state, the upper locking rod 42 is located in the upper locking part 4100 and the lower locking rod 43 is located in the lower unlocking part 4111; when the locking piece 41 is in the lower closed state, the upper locking rod 42 is located in the upper unlocking part 4101 and the lower locking rod 43 is located in the lower locking part 4110, specifically, when the locking piece 41 translates to the upper closed state, the upper locking rod 42 completely locks the middle die and the upper die, and the lower locking rod 43 automatically unlocks, realizing the locking of the middle die and the upper die; when the locking piece 41 translates to the lower closed state, the lower locking rod 43 completely locks the middle die and the lower die, and the upper locking rod 42 automatically unlocks, realizing the locking of the middle die and the lower die, this two-way linkage translation locking mechanism simplifies the locking process, improves the efficiency, and meets the strict requirements of the liquid die forging process for rapid parting and resetting.

[0041] In this way, by setting the locking mechanism at the four corners of the middle die and adopting a single locking piece 41 and oil cylinder 40 driving mode, the linkage locking and unlocking between the upper die 1, the middle die 2 and the lower die 3 are realized, specifically, the locking mechanism can realize the locking and unlocking of the upper die 1 and the middle die 2, the locking and unlocking of the middle die 2 and the lower die 3, and the locking and unlocking of the upper die 1, the middle die 2 and the lower die 3, at this time only two locking upper die 1 and middle die 2 located at opposite corners, and two locking middle die 2 and lower die 3 located at the other opposite corners are needed.

[0042] Secondly, by integrating the upper linkage hole 410 and the lower linkage hole 411 on the locking piece 41, and by precise positioning of the locking part and the unlocking part of the linkage hole, linkage operation of the upper locking rod 42 and the lower locking rod 43 is realized, and the integrated design reduces the occupation of the mold space, optimizes the structural layout of the mold, and is very suitable for the die forging needs of flywheel shell parts with complex shape and limited space.

[0043] Secondly, the problem of difficult guarantee of synchronization of multiple locking mechanisms in traditional design is avoided, and the accuracy and consistency of the locking action are improved.

[0044] In addition, the locking mechanism realizes precise translation by means of the oil cylinder 40 drive, and can withstand the production environment of high temperature, high pressure and frequent operation in the liquid die forging process. The mechanical structure design of the locking piece 41 is stable, reducing mechanical fatigue and wear during use.

[0045] In some embodiments, as shown in Figure 4 , the upper linkage hole 410 and the lower linkage hole 411 are both convex holes, and the narrow ends of the two are arranged close to each other.

[0046] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , the first locking part 420 is formed by thickening the lower end of the upper locking rod 42, the second locking part 430 is formed by thickening the upper end of the lower locking rod 43, the upper locking block 44 is connected to the upper end of the upper locking rod 42 by a fastener, and the lower locking block 45 is connected to the lower end of the lower locking rod 43 by a fastener.

[0047] In some embodiments, the locking mechanism 4 further comprises a fixed shell 46, the four corners of the middle die 2 are provided with mounting grooves 200 matched with the fixed shell 46, the fixed shell 46 is provided with a sliding channel 460, and the locking piece 41 is slidingly arranged in the sliding channel 460. In this way, the locking mechanism 4 is easy to assemble, and the fixed shell 46 can protect the internal parts and prevent external debris from entering.

[0048] In some embodiments, the mounting groove 200 comprises a first opening 201 and a second opening 202 arranged in an L shape, the oil cylinder 40 is arranged on the side of the fixed shell 46 facing the first opening 201, the side of the fixed shell 46 facing the second opening 202 is provided with a fastener connected with the middle die 2, and is provided with a state indicating mark 47, such as indicating marks of "← lower closing" and "→ upper closing" words. In this way, the operator can quickly understand the state of the mold, and the use of the mold is simplified.

[0049] In some embodiments, the upper die 1 is provided with an upper die core 50, a left die core 51, a right die core 52, a front die core 53 and a rear die core 54, and the middle die 2 is provided with a lower die core 55. Cooling channels are arranged in the left die core 51, the right die core 52, the front die core 53 and the rear die core 54. For the structure of the heavy truck engine flywheel housing, cooling channels are arranged on the outer periphery to enable rapid cooling of the forged piece and improve the quality of the forged piece.

[0050] In some embodiments, as shown in Figures 7 to 12 In some embodiments, as shown in Figures 7 to 12 In some embodiments, the left die core 51, the right die core 52, the front die core 53 and the rear die core 54 are arranged in a cross shape, and the opening and closing die mechanisms 6 are arranged behind the left die core 51, the right die core 52, the front die core 53 and the rear die core 54. The opening and closing die mechanism 6 includes a moving block 60, a fixed block 61 and a linkage rod 62. The moving block 60 is slidingly arranged on the upper die 1, and the fixed block 61 is arranged on the middle die 2. One end of the moving block 60 is connected to the corresponding die core, and the other end is provided with a first inclined surface 600. The side of the fixed block 61 close to the lower die core 55 is provided with a second inclined surface 610 matched with the first inclined surface 600. The linkage rod 62 includes a vertical rod portion 620 fixed to the middle die 2 and an inclined rod portion 621 inclined away from the lower die core 55 at the upper end. The moving block 60 is provided with a linkage inclined hole 601 matched with the inclined rod portion 621. When the upper die 1 and the middle die 2 are opened and closed, the moving block 60 moves towards or away from the upper die core 50 under the cooperation of the inclined rod portion 621 and the linkage inclined hole 601. In this way, by arranging an independent opening and closing die mechanism 6 behind each die core, each die core can be independently opened and closed to adapt to the complex shape of the flywheel housing and adjust the position of each die core as needed to ensure accurate molding.

[0051] Secondly, the opening and closing die mechanism 6 has a simple structure, occupies a small space, and has strong locking force when the dies are closed.

[0052] In some embodiments, the moving block 60 behind the left die core 51 and the right die core 52 is provided with a core pulling shaft 7, and the left die core 51 and the right die core 52 are provided with through holes 8 for the core pulling shaft 7 to pass through. The core pulling shaft 7 is used for machining the holes on the heavy truck engine flywheel housing, and is arranged on the moving block 60 to enable core pulling while the dies are opened, without the need to arrange a special core pulling driver.

[0053] In some embodiments, the moving block 60 is provided with sliding rails 9 close to the upper end face and the two side end faces of the upper die 1, and is connected to the upper die 1 through the sliding rails 9. The number of sliding rails 9 is adjusted according to actual needs, and multiple faces are provided with sliding rails 9 to improve the smoothness of the opening and closing of the moving block 60.

[0054] In some embodiments, the upper end of the inclined rod portion 621 is provided with a guide portion 623, which is configured to facilitate the quick assembly of the inclined rod portion 621 with the linkage inclined hole 601.

[0055] In view of the foregoing, it will be seen that the foregoing detailed description of the application is only illustrative in nature and not restrictive. Only the application herein disclosed, in its various embodiments, alone or in combination, is hereby deemed to be inventive and covered by this application. Although embodiments of the application have been described above with particularity, various changes and modifications can be suggested to one skilled in the art. It is intended that the application encompass such changes and modifications as fall within the scope of the appended claims. None of the description in this application should be read in or be intended to have any adverse effect on the statutory claims attached hereto.

[0056] Further, it should be understood that throughout this application, various implementation examples from the present application combinations of features have been presented for the purposes of simplifying the present application and helping with the understanding of one or more of the features. These combinations are described not specifically to require that those features be combined together in that single implementation example. Instead, they can occur or be claimed in any number of substitutions or rearrangements of other features set forth in one or more other implementation examples. In other words, those skilled in the art will understand that a feature described hereinunder one or more implementation examples is also applicable in other implementation examples, even if it is not specifically stated in such other implementation examples. In other words, the implementation examples in the present application can also be understood as an integration of multiple sub-implementation examples. And each sub-implementation example is valid when it has less than all the features of the single implementation example.

[0057] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the present application. Other modifications that fall within the spirit and scope of the application are possible. Accordingly, the disclosure of the application is intended to be illustrative, but not limiting, of the scope of the application. Those of ordinary skill in the art will be able to devise alternative arrangements that are within the scope of the application. Accordingly, the embodiments of the application are not limited to the precise arrangements set forth in the application.

Claims

1. A heavy-duty truck engine flywheel housing liquid die forging die, characterized in that, The utility model relates to a mould locking mechanism, including upper mould (1), middle mould (2) and lower mould (3), four corners of middle mould (2) all are provided with mould locking mechanism (4), mould locking mechanism (4) includes oil cylinder (40), locking piece (41), upper locking rod (42) and lower locking rod (43), locking piece (41) is provided with upper linkage hole (410) and lower linkage hole (411), upper linkage hole (410) includes upper locking portion (4100) and upper unlocking portion (4101), lower linkage hole (411) includes lower locking portion (4110) and lower unlocking portion (4111), upper mould (1) is provided with upper lock hole (100) on the upper locking rod (42) corresponding each, lower mould (3) is provided with lower lock hole (300) on the lower locking rod (43) corresponding each, The upper end of the upper locking rod (42) passes through the upper lock hole (100) and is provided with an upper locking block (44), and the lower end thereof is provided with a first locking portion (420) passing through the upper linkage hole (410), the upper locking block (44) cannot pass through the upper lock hole (100), the first locking portion (420) can pass through the upper unlocking portion (4101) and cannot pass through the upper locking portion (4100), The lower end of the lower locking rod (43) passes through the lower lock hole (300) and is provided with a lower locking block (45), and the upper end thereof is provided with a second locking portion (430) passing through the lower linkage hole (411), the lower locking block (45) cannot pass through the lower lock hole (300), the second locking portion (430) can pass through the lower unlocking portion (4111) and cannot pass through the lower locking portion (4110), Under the driving of the oil cylinder (40), the locking piece (41) has an upper closed state of locking the upper mould (1) and the middle mould (2) and unlocking the lower mould (3) and the middle mould (2) and a lower closed state of locking the lower mould (3) and the middle mould (2) and unlocking the upper mould (1) and the middle mould (2); When the locking piece (41) is in the upper closed state, the upper locking rod (42) is located in the upper locking portion (4100) and the lower locking rod (43) is located in the lower unlocking portion (4111); When the locking piece (41) is in the lower closed state, the upper locking rod (42) is located in the upper unlocking portion (4101) and the lower locking rod (43) is located in the lower locking portion (4110).

2. The heavy-duty truck engine flywheel housing liquid die forging die of claim 1, wherein, The mould locking mechanism (4) further includes a fixed shell (46), each corner of the middle mould (2) is provided with a mounting groove (200) matched with the fixed shell (46), the fixed shell (46) is provided with a slide (460), and the locking piece (41) is slidably arranged in the slide (460).

3. The heavy-duty truck engine flywheel housing liquid die forging die of claim 2, wherein, The mounting groove (200) includes a first opening (201) and a second opening (202) arranged in an L shape, the oil cylinder (40) is arranged on one side of the fixed shell (46) facing the first opening (201), one side of the fixed shell (46) facing the second opening (202) is provided with a fastener connected with the middle mould (2) and a state indicating mark (47).

4. The heavy-duty truck engine flywheel housing liquid die forging die of claim 1, wherein, The upper die (1) is provided with an upper die core (50), a left die core (51), a right die core (52), a front die core (53) and a rear die core (54), the middle die (2) is provided with a lower die core (55), and the left die core (51), the right die core (52), the front die core (53) and the rear die core (54) are all provided with cooling channels.

5. The heavy-duty truck engine flywheel housing liquid die forging die of claim 4, wherein, The four mold opening and closing mechanisms (6) are arranged in the rear of the left die core (51), the right die core (52), the front die core (53) and the rear die core (54) in a cross shape, and the mold opening and closing mechanism (6) comprises a moving block (60), a fixed block (61) and a linkage rod (62), the moving block (60) is slidably arranged on the upper die (1), the fixed block (61) is arranged on the middle die (2), one end of the moving block (60) is connected with the corresponding die core, the other end is provided with a first inclined surface (600), the side of the fixed block (61) close to the lower die core (55) is provided with a second inclined surface (610) matched with the first inclined surface (600), the linkage rod (62) comprises a vertical rod portion (620) fixed on the middle die (2) and an inclined rod portion (621) inclined towards the direction away from the lower die core (55) at the upper end, the moving block (60) is provided with a linkage inclined hole (601) matched with the inclined rod portion (621), and when the upper die (1) and the middle die (2) are opened and closed, the moving block (60) moves towards or away from the upper die core (50) under the cooperation of the inclined rod portion (621) and the linkage inclined hole (601).

6. The heavy-duty truck engine flywheel housing liquid die forging die of claim 5, wherein, The moving block (60) behind the left die core (51) and the right die core (52) is provided with a core pulling shaft (7), and the left die core (51) and the right die core (52) are provided with through holes (8) for the core pulling shaft (7) to pass through.

7. The heavy-duty truck engine flywheel housing liquid die forging die of claim 5, wherein, The moving block (60) is provided with slide rails (9) close to the upper end face and the two side end faces of the upper die (1) and is connected with the upper die (1) through the slide rails (9).

8. The heavy-duty truck engine flywheel housing liquid die forging die of claim 5, wherein, The upper end of the inclined rod portion (621) is provided with a guide portion (623).

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