Hot forging lower die assembly and hot forging die

Abstract

The utility model provides a hot-forging lower die assembly and a hot-forging die, which can improve the disassembly and assembly efficiency, the hot-forging lower die assembly comprises: a lower die plate provided with a mounting groove, the groove wall of the mounting groove having a first reference surface and a second reference surface which intersect with each other; the mold core is movably arranged in the mounting groove; the positioning piece comprises a first positioning body and a second positioning body, the first positioning body movably penetrates through the lower die plate and extends to the mounting groove, and the second positioning body movably penetrates through the lower die plate and extends to the mounting groove; the rotating piece comprises a first rotating body and a second rotating body which are rotationally connected with the lower die plate, the second rotating body is rotationally connected with the first rotating body, the first rotating body and the second rotating body are each provided with a central axis and a pushing part, and the central axis of the first rotating body intersects with the central axis of the second rotating body; a first pushing surface and a second pushing surface which are connected with each other are alternately arranged on the outer side of the pushing part in the circumferential direction of the pushing part, and the distance between the first pushing surface and the central axis is larger than that between the second pushing surface and the central axis.

Description

Technical Field

[0001] The utility model relates to the technical field of hot forging, in particular to a hot forging lower die assembly and a hot forging die. Background Art

[0002] Currently, the core and template of hot forging dies are tightly fitted with a single-side 0.02mm gap and fastened with screws. However, during the die heating and forging process, the core expands due to heat, making it difficult to disassemble. Utility Model Content

[0003] In view of the above situation, it is necessary to provide a hot forging lower die assembly and a hot forging die to improve the disassembly and assembly efficiency.

[0004] The present application provides a hot forging lower die assembly, comprising:

[0005] The lower template is provided with a mounting groove, wherein a groove wall of the mounting groove has a first reference surface and a second reference surface intersecting with each other;

[0006] A mold core is movably disposed in the mounting groove;

[0007] A positioning member, comprising a first positioning body and a second positioning body, wherein the first positioning body is movably provided through the lower template and extends to the installation slot, and the second positioning body is movably provided through the lower template and extends to the installation slot; and

[0008] The rotating member includes a first rotating body and a second rotating body respectively connected to the lower template, and the second rotating body is rotatably connected to the first rotating body, and the first rotating body and the second rotating body each have a center axis and a push portion, the center axis of the first rotating body and the center axis of the second rotating body intersect, the outer side of each of the push portions is alternately provided with a first push surface and a second push surface connected along the circumference of the push portion, the distance between the first push surface and the center axis of the corresponding push portion is greater than the distance between the second push surface and the center axis of the corresponding push portion, the first rotating body and the second rotating body rotate synchronously and push the first positioning body and the second positioning body respectively through the two push portions to move close to the first reference plane and the second reference plane, so that the two first push surfaces are respectively held against the first positioning body and the second positioning body to position the mold core to the first reference plane and the second reference plane.

[0009] When the above-mentioned hot forging lower die assembly is being disassembled and assembled, the first rotating body and the second rotating body are firstly rotated synchronously, so that the second pushing surfaces of the two pushing parts correspond to the first positioning body and the second positioning body respectively, so that the two pushing parts and the first positioning body and the second positioning body are loosened from each other, which is convenient for the operator to push the first positioning body and the second positioning body away from the mold core to be replaced, so that the mold core has a large enough space to move in the installation groove, and avoids the mold core being stuck in the installation groove by the pushing of the first positioning body and the second positioning body, which is conducive to replacing the mold core. Then the operator replaces the new mold core into the installation groove, and finally continues to rotate synchronously with the first rotating body and the second rotating body, so that the two pushing parts push the first positioning body and the second positioning body close to the first reference surface and the second reference surface respectively, so that the two pushing parts are respectively held on the first positioning body and the second positioning body through the first pushing surfaces, so as to position the replaced mold core to the first reference surface and the second reference surface respectively, thereby completing the replacement and disassembly operation of the mold core, thereby improving the disassembly and assembly efficiency.

[0010] In some embodiments, the lower template comprises:

[0011] The template body is provided with the mounting groove, the mounting groove includes a receiving groove and two accommodating grooves, the receiving groove is opened on the surface of the template body, the first reference surface and the second reference surface are located on the groove wall of the receiving groove, the two accommodating grooves are arranged around the mounting groove and correspond to the first reference surface and the second reference surface respectively, and the two accommodating grooves are respectively connected to the receiving groove for accommodating part of the first positioning body and part of the second positioning body respectively;

[0012] Two bearing bodies are sequentially arranged on the outer side of the template body along the circumference of the template body and are rotatably connected to the first rotating body and the second rotating body respectively, and the two bearing bodies are used to carry the first rotating body and the second rotating body respectively;

[0013] The first positioning body and the second positioning body are movably provided in the template body, and the first rotating body and the second rotating body are movably provided in the corresponding supporting body.

[0014] In some embodiments, the first positioning body and the second positioning body both include:

[0015] A positioning portion, movably disposed in the corresponding receiving groove;

[0016] Two movable parts are arranged in parallel and are movably arranged in the template body along the direction from the accommodating groove to the receiving groove. The two movable parts are used to synchronously drive the positioning part to push the mold core under the pushing of the pushing part.

[0017] In some embodiments, the first rotating body and the second rotating body each further include:

[0018] a rotating portion, movably disposed on the carrier and having the central axis;

[0019] a gear portion, provided at an end of the rotating portion and connected to the rotating portion, wherein the gear portion of the first rotating body is perpendicular to and meshes with the gear portion of the second rotating body, and one of the gear portions drives the two rotating portions to rotate synchronously through the other gear portion;

[0020] Wherein, each of the first rotating body and the second rotating body comprises two pushing parts, the two pushing parts correspond to the two movable parts one by one, and each pushing part is connected to the corresponding rotating part.

[0021] In some embodiments, an end of the rotating portion away from the gear portion is provided with a working groove for clamping an external driving member.

[0022] In some embodiments, the outer side of the rotating part has a holding plane, and the pushing part is provided with a limiting hole, which passes through the pushing part along the axial direction of the rotating part. The rotating part is inserted into the limiting hole and is clamped and connected with the pushing part through the holding plane.

[0023] In some embodiments, the rotating member further comprises:

[0024] The bearing body is embedded in the carrier and connected to the carrier, and the bearing body is sleeved on the rotating part.

[0025] In some embodiments, each of the carriers comprises:

[0026] A bearing portion, provided on the outer side of the template body;

[0027] The supporting part is spaced apart from the bearing part and connected to the template body. The rotating part is movably rotated between the bearing part and the supporting part, and the supporting part is provided with a avoiding groove for receiving and avoiding the pushing part.

[0028] In some embodiments, the connection between the first pushing surface and the second pushing surface is an arc-shaped structure.

[0029] The present application also provides a hot forging die, comprising:

[0030] The hot forging lower die assembly mentioned above;

[0031] The upper die assembly is arranged opposite to and fitted with the hot forging lower die assembly.

[0032] When the above-mentioned hot forging mold is being disassembled and assembled, the first rotating body and the second rotating body are firstly rotated synchronously, so that the second pushing surfaces of the two pushing parts correspond to the first positioning body and the second positioning body respectively, so that the two pushing parts and the first positioning body and the second positioning body are loosened from each other, which is convenient for the operator to push the first positioning body and the second positioning body away from the mold core to be replaced, so that the mold core has a large enough space to move in the installation groove, and avoids the mold core being stuck in the installation groove by the pushing of the first positioning body and the second positioning body, which is conducive to replacing the mold core. Then the operator replaces the new mold core into the installation groove, and finally continues to rotate synchronously with the first rotating body and the second rotating body, so that the two pushing parts push the first positioning body and the second positioning body close to the first reference surface and the second reference surface respectively, so that the two pushing parts are respectively held by the first pushing surfaces on the first positioning body and the second positioning body, so as to position the replaced mold core to the first reference surface and the second reference surface respectively, thereby completing the replacement and disassembly operation of the mold core, thereby improving the disassembly and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the three-dimensional structure of the hot forging die provided in an embodiment of the present application.

[0034] Figure 2 for Figure 1 The three-dimensional structural diagram of the positioning parts and rotating parts in the hot forging die is shown.

[0035] Figure 3 for Figure 2 The cross-sectional schematic diagram of the rotating part along III-III is shown.

[0036] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the lower template in the hot forging die shown.

[0037] Description of main component symbols

[0038] Hot forging die 100

[0039] Upper mold assembly 101

[0040] Hot forging lower die assembly 102

[0041] Lower template 10

[0042] Mounting slot 11

[0043] First reference surface 111

[0044] Second reference surface 112

[0045] Storage slot 113

[0046] Accommodation slot 114

[0047] Template 12

[0048] Carrier 13

[0049] Carrying portion 131

[0050] Support portion 132

[0051] Avoidance slot 1321

[0052] Mold 20

[0053] Positioning piece 30

[0054] First positioning body 31

[0055] Positioning portion 311

[0056] Activities Department 312

[0057] Second positioning body 32

[0058] Rotating member 40

[0059] First rotating body 41

[0060] Pushing portion 411

[0061] First push surface 4111

[0062] Second push surface 4112

[0063] Limit hole 4113

[0064] Arc structure 4114

[0065] Rotating portion 412

[0066] Operation slot 4121

[0067] Holding plane 4122

[0068] Gear unit 413

[0069] Second rotating body 42

[0070] Bearing body 43 DETAILED DESCRIPTION

[0071] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0072] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection, an electrical connection, or mutual communication; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0075] See also Figure 1 An embodiment of the present application provides a hot forging die 100, comprising an upper die assembly 101 and a hot forging lower die assembly 102 that are relatively arranged and appropriately matched. The hot forging lower die assembly 102 comprises a lower template 10, a die core 20, a positioning member 30 and a rotating member 40.

[0076] For ease of understanding and explanation, a three-dimensional coordinate system is established in some of the drawings, where the first direction is the Y-axis direction, the second direction is the X-axis direction, and the third direction is the Z-axis direction, i.e., the mold opening direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.

[0077] See also Figure 1 、 Figure 2 and Figure 3The lower template 10 is provided with a mounting groove 11, and the groove wall of the mounting groove 11 has a first reference surface 111 and a second reference surface 112 intersecting each other, and the mold core 20 can be movably arranged in the mounting groove 11. The positioning member 30 includes a first positioning body 31 and a second positioning body 32. The first positioning body 31 is movably provided in the lower template 10 and extends to the mounting groove 11. The second positioning body 32 is movably provided in the lower template 10 and extends to the mounting groove 11. The rotating member 40 includes a first rotating body 41 and a second rotating body 42 rotatably connected to the lower template 10, and the second rotating body 42 is rotatably connected to the first rotating body 41. The first rotating body 41 and the second rotating body 42 both have a central axis L and a push portion 411. The central axis L of the first rotating body 41 and the central axis L of the second rotating body 42 intersect. The outer side of each push portion 411 is alternately provided with a first push surface 4111 and a second push surface 4112 connected along the circumference of the push portion 411. The first push surface 4111 is connected to the corresponding The distance between the central axis L of the pushing portion 411 is greater than the distance between the second pushing surface 4112 and the corresponding pushing portion 411. The first rotating body 41 and the second rotating body 42 rotate synchronously and push the first positioning body 31 and the second positioning body 32 respectively close to the first reference surface 111 and the second reference surface 112 through the two pushing portions 411, so that the two first pushing surfaces 4111 are respectively held against the first positioning body 31 and the second positioning body 32 to position the mold core 20 to the first reference surface 111 and the second reference surface 112.

[0078] When the above-mentioned hot forging lower die assembly 102 and the hot forging die 100 are being disassembled and assembled, the first rotating body 41 and the second rotating body 42 are first rotated synchronously along a preset direction and a preset angle, so that the second pushing surfaces 4112 of the two pushing parts 411 correspond to the first positioning body 31 and the second positioning body 32 respectively, so that the two pushing parts 411 and the first positioning body 31 and the second positioning body 32 are loosened from each other, making it easier for the operator to push the first positioning body 31 and the second positioning body 32 away from the mold core 20 to be replaced, so that the mold core 20 has a sufficiently large activity space in the installation groove 11, thereby preventing the mold core 20 from being pushed by the first positioning body 31 and the second positioning body 32 and The mounting groove 11 is stuck, which is conducive to replacing the mold core 20. Then the operator replaces the new mold core 20 into the mounting groove 11, and finally continues to rotate synchronously by a preset angle along a preset direction through the first rotating body 41 and the second rotating body 42, so that the two pushing parts 411 respectively push the first positioning body 31 and the second positioning body 32 close to the first reference surface 111 and the second reference surface 112, so that the two pushing parts 411 are respectively supported on the first positioning body 31 and the second positioning body 32 through the first pushing surface 4111, so as to position the replaced mold core 20 to the first reference surface 111 and the second reference surface 112, respectively, thereby completing the replacement and disassembly operation of the mold core 20 and improving the disassembly efficiency.

[0079] It should be noted that the aforementioned preset direction refers to the rotation direction of the first rotating body 41 and the second rotating body 42. In this embodiment, the preset direction can be clockwise, and in other embodiments, the preset direction can be counterclockwise, so that the first abutting surface 4111 and the second abutting surface 4112 can alternately correspond to the first positioning body 31 and the second positioning body 32 after the abutting portion 411 rotates. Specifically, because the two first abutting surfaces 4111 and the two second abutting surfaces 4112 are alternately arranged on the outside of the abutting portion 411, in this embodiment, the preset angle is 90°, and each time the abutting portion 411 rotates 90°, the first abutting surface 4111 and the second abutting surface 4112 can be switched. In this embodiment, the first reference surface 111 and the first positioning body 31 are arranged correspondingly along the X-axis direction, and the second reference surface 112 and the second positioning body 32 are arranged correspondingly along the Y-axis direction. The first positioning body 31 and the second positioning body 32 position the mold core 20 along the X-axis direction and the Y-axis direction, respectively. In addition, taking the pushing portion 411 pushing the first positioning body 31 as an example, when the pushing portion 411 pushes the first positioning body 31, the pushing portion 411 is transformed from the second pushing surface 4112 toward the first positioning body 31 to the first pushing surface 4111 toward the first positioning body 31. Since the distance between the first pushing surface 4111 and the center axis L is greater than the distance between the second pushing surface 4112 and the center axis L, the distance between the pushing portion 411 and the first positioning body 31 along the X-axis direction changes, which enables the pushing portion 411 to stably push the first positioning body 31 close to the first reference surface 111.

[0080] Furthermore, the mounting grooves 11 extend along the Z-axis through opposite sides of the lower mold plate 10. After the positioning members 30 position the mold core 20 within the mounting grooves 11, the operator screws through the mold core 20 and secures it to the external fixing members to stably secure the mold core 20 and prevent it from shaking during use. For example, the external supporting member can be a fixing plate in the hot forging die 100.

[0081] See also Figure 1 and Figure 4In some embodiments, the lower template 10 includes a template body 12 and two supporting bodies 13. The template body 12 is provided with a mounting groove 11, which includes a receiving groove 113 and two accommodating grooves 114. The receiving groove 113 is opened on the surface of the template body 12, and the first reference surface 111 and the second reference surface 112 are located on the groove wall of the receiving groove 113. The two accommodating grooves 114 are arranged around the mounting groove 11 and correspond to the first reference surface 111 and the second reference surface 112 respectively. The two accommodating grooves 114 are respectively connected to the mounting groove 11 and are used to respectively accommodate part of the first positioning body 31 and part of the second positioning body 32. The two supporting bodies 13 are sequentially arranged on the outside of the template body 12 along the circumference of the template body 12 and are rotatably connected to the first rotating body 41 and the second rotating body 42 respectively. The two supporting bodies 13 are used to respectively carry the first rotating body 41 and the second rotating body 42. The first positioning body 31 and the second positioning body 32 are movably disposed through the template body 12 , and the first rotating body 41 and the second rotating body 42 are movably disposed through the corresponding supporting body 13 .

[0082] In this way, during the process of replacing the mold core 20, the two receiving grooves 114 respectively accommodate part of the first positioning body 31 and part of the second positioning body 32, so that there is a sufficiently large movable gap between the mold core 20 to be replaced and the groove wall of the installation groove 11, the first positioning body 31 and the second positioning body 32, which makes it convenient for the operator to stably remove the mold core 20 from the installation groove 11.

[0083] See also Figure 2 and Figure 3 In some embodiments, the first positioning body 31 and the second positioning body 32 each include a positioning portion 311 and two movable portions 312. The positioning portion 311 is movably disposed within the corresponding receiving slot 114. The two movable portions 312 are disposed in parallel and are movably disposed through the template body 12 along the direction from the receiving slot 114 to the receiving slot 113. The two movable portions 312 are used to synchronously drive the positioning portion 311 to push the mold core 20 under the resistance of the resistance portion 411.

[0084] In this way, the two movable parts 312 synchronously drive the positioning part 311 to move under the push of the corresponding push part 411, which can increase the contact area between the first positioning body 31 and the second positioning body 32 and the corresponding push part 411, and then the positioning part 311 can stably push the mold core 20 under the drive of the two movable parts 312, thereby improving the positioning stability.

[0085] Please continue reading Figure 2 and Figure 3In some embodiments, the first rotating body 41 and the second rotating body 42 each further include a rotating portion 412 and a gear portion 413. The rotating portion 412 is movably provided in the carrier 13 and has a central axis L. The gear portion 413 is provided at the end of the rotating portion 412 and is connected to the rotating portion 412. The gear portion 413 of the first rotating body 41 is perpendicular to and meshes with the gear portion 413 of the second rotating body 42. One gear portion 413 drives the two rotating portions 412 to rotate synchronously through the other gear portion 413. Among them, the first rotating body 41 and the second rotating body 42 each include two push portions 411, and the two push portions 411 correspond one-to-one to the two movable portions 312. Each push portion 411 is connected to the corresponding rotating portion 412. Exemplarily, the gear portion 413 can be a bevel gear.

[0086] In this way, by having the two gear portions 413 perpendicular and meshing with each other, a gear linkage mechanism is formed between the first rotating body 41 and the second rotating body 42, so that the first rotating body 41 and the second rotating body 42 rotate synchronously under the drive of the gear linkage mechanism, achieving a rotation of force. In addition, by having the two push portions 411 correspond to the two movable portions 312, respectively, the two push portions 411 can push the corresponding movable portions 312, thereby improving the driving stability of the first rotating body 41 and the second rotating body 42.

[0087] See also Figure 2 In some embodiments, an operating groove 4121 is provided at one end of the rotating portion 412 away from the gear portion 413. For example, the operating groove 4121 can be a cross-shaped groove or a straight-shaped groove.

[0088] In this way, by clamping the external driving member through the working groove 4121, the external driving member can apply a force to the first rotating body 41 or the second rotating body 42 through the working groove 4121, thereby driving the first rotating body 41 and the second rotating body 42 to rotate synchronously.

[0089] See also Figure 3 In some embodiments, the outer side of the rotating part 412 has a holding plane 4122, and the pushing part 411 is provided with a limiting hole 4113, which passes through the pushing part 411 along the axial direction of the rotating part 412. The rotating part 412 is inserted into the limiting hole 4113 and is clamped and connected with the pushing part 411 through the holding plane 4122.

[0090] In this way, the rotating portion 412 is clamped and connected to the pushing portion 411 via the clamping plane 4122 , preventing the rotating portion 412 and the pushing portion 411 from rotating relative to each other, thereby stably driving the pushing portion 411 to rotate synchronously.

[0091] See also Figure 2In some embodiments, the rotating member 40 further includes a bearing body 43, which is embedded in and connected to the carrier 13, and is sleeved on the rotating portion 412. For example, the bearing body 43 can be a rolling bearing.

[0092] Thus, by providing the bearing body 43 sleeved on the rotating part 412 , the rotating part 412 can be prevented from contacting with the supporting body 13 , thereby preventing the rotating part 412 from being unable to rotate due to a large friction force, thereby allowing the rotating part 412 to rotate smoothly.

[0093] See also Figure 1 In some embodiments, each carrier 13 includes a carrier portion 131 and a support portion 132. The carrier portion 131 is disposed outside the template body 12, and the support portion 132 is spaced apart from the carrier portion 131 and connected to the template body 12. The rotating portion 412 is movably disposed between the carrier portion 131 and the support portion 132, and the support portion 132 is provided with a relief groove 1321 for receiving and avoiding the push portion 411.

[0094] In this way, by the bearing part 131 and the supporting part 132 respectively carrying different positions of the rotating part 412, the rotating part 412 can be stably rotated under the support of the bearing part 131 and the supporting part 132. By avoiding the groove to accommodate the pushing part 411, the supporting part 132 can avoid the pushing part 411 through the avoiding groove 1321 to prevent the pushing part 411 from colliding with the supporting part 132 during the rotation process.

[0095] See also Figure 3 In some embodiments, the connection between the first pushing surface 4111 and the second pushing surface 4112 is an arc-shaped structure 4114, which can enable the first pushing surface 4111 to smoothly transition to the second pushing surface 4112, while avoiding interference with other components during the conversion between the first pushing surface 4111 and the second pushing surface 4112, thereby facilitating the smooth rotation of the first rotating body 41 and the second rotating body 42.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A hot forging lower die assembly, characterized in that: include: The lower template is provided with a mounting groove, wherein a groove wall of the mounting groove has a first reference surface and a second reference surface intersecting with each other; A mold core is movably disposed in the mounting groove; The positioning member includes a first positioning body and a second positioning body, wherein the first positioning body is movably provided on the lower template and extends to the installation slot, and the second positioning body is movably provided on the lower template and extends to the installation slot; and The rotating member includes a first rotating body and a second rotating body respectively connected to the lower template, and the second rotating body is rotatably connected to the first rotating body, and the first rotating body and the second rotating body each have a center axis and a push portion, the center axis of the first rotating body and the center axis of the second rotating body intersect, the outer side of each of the push portions is alternately provided with a first push surface and a second push surface connected along the circumference of the push portion, the distance between the first push surface and the center axis of the corresponding push portion is greater than the distance between the second push surface and the center axis of the corresponding push portion, the first rotating body and the second rotating body rotate synchronously and push the first positioning body and the second positioning body respectively through the two push portions to move close to the first reference plane and the second reference plane, so that the two first push surfaces are respectively held against the first positioning body and the second positioning body to position the mold core to the first reference plane and the second reference plane.

2. The hot forging lower die assembly according to claim 1, wherein: The lower template includes: The template body is provided with the mounting groove, the mounting groove includes a receiving groove and two accommodating grooves, the receiving groove is opened on the surface of the template body, the first reference surface and the second reference surface are located on the groove wall of the receiving groove, the two accommodating grooves are arranged around the mounting groove and correspond to the first reference surface and the second reference surface respectively, and the two accommodating grooves are respectively connected to the receiving groove for accommodating part of the first positioning body and part of the second positioning body respectively; Two bearing bodies are sequentially arranged on the outer side of the template body along the circumference of the template body and are rotatably connected to the first rotating body and the second rotating body respectively, and the two bearing bodies are used to carry the first rotating body and the second rotating body respectively; The first positioning body and the second positioning body are movably provided in the template body, and the first rotating body and the second rotating body are movably provided in the corresponding supporting body.

3. The hot forging lower die assembly according to claim 2, wherein: The first positioning body and the second positioning body both include: A positioning portion, movably disposed in the corresponding receiving groove; Two movable parts are arranged in parallel and are movably arranged on the template body along the direction in which the accommodating groove points to the receiving groove. The two movable parts are used to synchronously drive the positioning part to push the mold core under the pushing of the pushing part.

4. The hot forging lower die assembly according to claim 3, wherein: The first rotating body and the second rotating body each further include: a rotating portion, movably disposed on the carrier and having the central axis; a gear portion, provided at an end of the rotating portion and connected to the rotating portion, wherein the gear portion of the first rotating body is perpendicular to and meshes with the gear portion of the second rotating body, and one of the gear portions drives the two rotating portions to rotate synchronously through the other gear portion; Wherein, each of the first rotating body and the second rotating body comprises two pushing parts, the two pushing parts correspond to the two movable parts one by one, and each pushing part is connected to the corresponding rotating part.

5. The hot forging lower die assembly according to claim 4, characterized in that: An operating groove is provided at one end of the rotating portion away from the gear portion for clamping an external driving member.

6. The hot forging lower die assembly according to claim 4, wherein: The outer side of the rotating part has a holding plane, and the pushing part is provided with a limiting hole. The limiting hole passes through the pushing part along the axial direction of the rotating part. The rotating part is inserted into the limiting hole and is connected to the pushing part by the holding plane.

7. The hot forging lower die assembly according to claim 4, wherein: The rotating member further comprises: The bearing body is embedded in the carrier and connected to the carrier, and the bearing body is sleeved on the rotating part.

8. The hot forging lower die assembly according to claim 4, wherein: Each of the carriers comprises: A bearing portion, provided on the outer side of the template body; The supporting part is spaced apart from the bearing part and connected to the template body. The rotating part is movably rotated between the bearing part and the supporting part, and the supporting part is provided with a avoiding groove for receiving and avoiding the pushing part.

9. The hot forging lower die assembly according to claim 1, wherein: The connection between the first pushing surface and the second pushing surface is an arc-shaped structure.

10. A hot forging die, characterized in that: include: The hot forging lower die assembly according to any one of claims 1 to 9; The upper die assembly is arranged opposite to and fitted with the hot forging lower die assembly.

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