Forging die for middle cross beam

Abstract

The utility model discloses a forging die of a middle cross beam, which comprises a lower die, a pre-forging lower die cavity and a precision-forging lower die cavity are arranged on the upper surface of the lower die at intervals, an arc-shaped positioning groove and a positioning end face are arranged in the middle of the pre-forging lower die cavity, and the arc-shaped positioning groove and the positioning end face are arranged along the length direction of the pre-forging lower die cavity at intervals. The arc-shaped positioning groove is used for supporting and positioning the side face of a bar, and the positioning end face is used for positioning the end face of the bar. A pre-forging upper die cavity and a precision-forging upper die cavity are arranged on the lower surface of the upper die at intervals, the pre-forging upper die cavity corresponds to the pre-forging lower die cavity, and the precision-forging upper die cavity corresponds to the precision-forging lower die cavity. The utility model has the advantages that the bar stock can be accurately positioned during forging, and the filling completeness of the finally forged product is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of forging, and in particular relates to a forging die for an intermediate crossbeam. Background Art

[0002] With the popularization of new energy electric vehicles, the battery capacity of electric vehicles has been continuously increased in order to achieve long-distance endurance. In order to improve the strength of the battery pack, it is usually necessary to set an intermediate beam between the battery groups of the battery pack. On the one hand, it can separate the battery groups, and on the other hand, it can improve the strength and deformation resistance of the battery pack.

[0003] Since the middle cross beam is a thin and large sheet product, it is difficult to forge. Currently, during forging, due to the lack of positioning of the bar, the bar placed in the mold will roll, and the axial placement cannot be guaranteed to be accurate, which ultimately makes the forged middle cross beam not fully filled. In addition, due to the sheet structure, the shape of the flash formed during forging is unstable, making it difficult to clamp. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the utility model proposes a forging die for an intermediate cross beam, which has the advantages of being able to accurately position the bar material during forging and ensuring that the final forged product is completely filled.

[0006] According to the forging die of the middle cross beam of the embodiment of the utility model, it includes: a lower die, the upper surface of which is provided with a pre-forging lower die cavity and a fine forging lower die cavity at intervals, the middle part of the pre-forging lower die cavity is provided with an arc-shaped positioning groove and a positioning end face, the arc-shaped positioning groove and the positioning end face are arranged at intervals along the length direction of the pre-forging lower die cavity, the arc-shaped positioning groove is used to support and position the side of the bar material, and the positioning end face is used to position the end face of the bar material; an upper die, the lower surface of the upper die is provided with a pre-forging upper die cavity and a fine forging upper die cavity at intervals, the pre-forging upper die cavity corresponds to the pre-forging lower die cavity, and the fine forging upper die cavity corresponds to the fine forging lower die cavity.

[0007] According to an embodiment of the utility model, a guide positioning groove is provided on the lower die, and a guide positioning protrusion is provided on the upper die. During forging, the guide positioning protrusion enters the guide positioning groove to complete the guide fit.

[0008] According to an embodiment of the utility model, both ends of the pre-forging lower die cavity and the fine forging lower die cavity along the length direction are provided with raised parts, and the upper end surfaces of the raised parts are plane.

[0009] According to an embodiment of the utility model, a lower flash accommodating surface is also formed on the upper surface of the lower die, and the lower flash accommodating surface is located outside the pre-forging lower die cavity and the fine forging lower die cavity.

[0010] According to one embodiment of the utility model, a plurality of lower ribs are arranged between the pre-forging lower die cavity and the fine forging lower die cavity, and a plurality of upper ribs are arranged between the pre-forging upper die cavity and the fine forging upper die cavity. During forging, the plurality of lower ribs and the plurality of upper ribs are staggered.

[0011] According to an embodiment of the utility model, both the lower die and the upper die are provided with ejection holes penetrating along the thickness direction, and the ejection holes are located in the flash area of ​​the forging.

[0012] According to an embodiment of the utility model, waist-shaped grooves are provided on the sides of the lower mold and the upper mold, and a plurality of heating holes are arranged at intervals in the waist-shaped grooves, and the heating holes are used to place heating rods.

[0013] According to one embodiment of the utility model, an upper burr accommodating surface is also formed on the lower surface of the upper die, and the upper burr accommodating surface is located outside the pre-forging upper die cavity and the fine forging upper die cavity, and the upper burr accommodating surface is arranged opposite to the lower burr accommodating surface.

[0014] According to an embodiment of the utility model, the sides of the lower mold and the upper mold are also provided with hanging holes.

[0015] According to an embodiment of the utility model, key grooves for installation and positioning are provided on the lower surface of the lower mold and the upper surface of the upper mold.

[0016] The beneficial effect of the utility model is that, by arranging a pre-forging lower die cavity and a fine forging lower die cavity on the lower die, and arranging a pre-forging upper die cavity and a fine forging upper die cavity on the upper die, pre-forging and fine forging are simultaneously performed in one stamping, and the pre-forged parts can be fine forged in time, and the production efficiency is relatively high. The utility model is provided with an arc-shaped positioning groove and a positioning end face in the middle of the pre-forging lower die cavity, which, on the one hand, supports the side of the bar to prevent the bar from rolling, and on the other hand, can position the end face of the bar, and finally the bar placed in the pre-forging lower die cavity maintains the same forging position, thereby ensuring complete filling and improving the forging effect.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments of the present invention, in which:

[0020] Figure 1 It is a schematic diagram of the lower mold structure according to the utility model;

[0021] Figure 2 It is a schematic diagram of the second angle structure of the lower mold according to the utility model;

[0022] Figure 3 It is a schematic diagram of the upper mold structure according to the utility model;

[0023] Reference numerals:

[0024] Lower die 1, upper die 2, guide positioning groove 11, pre-forging lower die cavity 12, fine forging lower die cavity 13, raised portion 14, lower flash accommodating surface 15, lower rib portion 16, ejection hole 17, waist-shaped groove 18, heating hole 19, arc-shaped positioning groove 121, positioning end face 122, guide positioning protrusion 21, pre-forging upper die cavity 22, fine forging upper die cavity 23, upper rib portion 24, upper flash accommodating surface 25. DETAILED DESCRIPTION

[0025] The embodiments of the present invention 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 invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The forging die of the middle cross beam in the embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0029] like Figure 1-Figure 3 As shown, the forging die of the middle cross beam according to the embodiment of the utility model comprises: a lower die 1 and an upper die 2, the upper surface of the lower die 1 is provided with a pre-forging lower die cavity 12 and a fine forging lower die cavity 13, the middle part of the pre-forging lower die cavity 12 is provided with an arc-shaped positioning groove 121 and a positioning end face 122, the arc-shaped positioning groove 121 and the positioning end face 122 are arranged at intervals along the length direction of the pre-forging lower die cavity 12, the arc-shaped positioning groove 121 is used to support and position the side of the bar, and the positioning end face 122 is used to position the end face of the bar; the lower surface of the upper die 2 is provided with a pre-forging upper die cavity 22 and a fine forging upper die cavity 23, the pre-forging upper die cavity 22 corresponds to the pre-forging lower die cavity 12, and the fine forging upper die cavity 23 corresponds to the fine forging lower die cavity 13.

[0030] In other words, the bar is formed into a pre-forging between the pre-forging upper die cavity 22 and the pre-forging lower die cavity 12, and the pre-forging is formed into a fine forging between the fine forging upper die cavity 23 and the fine forging lower die cavity 13, and the arc-shaped positioning groove 121 can support and position the bar to prevent the bar from rolling, and the positioning end face 122 can support one end of the bar to ensure that the inserted bar falls at the same position of the pre-forging lower die cavity 12, maintaining the consistency of the discharge, thereby ensuring complete filling during forging and stable forging quality.

[0031] According to an embodiment of the present utility model, a guide positioning groove 11 is provided on the lower die 1, and a guide positioning protrusion 21 is provided on the upper die 2. During forging, the guide positioning protrusion 21 enters the guide positioning groove 11 to complete the guide fit.

[0032] In this embodiment, the number of the guiding positioning protrusions 21 and the number of the guiding positioning grooves 11 are both four. The four guiding positioning protrusions 21 are distributed on the four corners of the upper die 2, and the four guiding positioning grooves 11 are distributed on the four corners of the lower die 1. During stamping, the guiding positioning protrusions 21 cooperate with the guiding positioning grooves 11 to ensure forging accuracy.

[0033] Preferably, both ends of the pre-forging lower die cavity 12 and the fine forging lower die cavity 13 along the length direction are provided with raised portions 14 , and the upper end surfaces of the raised portions 14 are planes.

[0034] That is, the protrusion 14 is provided so that the flash during forging can form a clamping plane at both ends in the length direction, so as to facilitate clamping by a robot, thereby facilitating automated production.

[0035] In this embodiment, the upper surface of the lower die 1 is also formed with a lower burr accommodating surface 15, and the lower burr accommodating surface 15 is located outside the pre-forging lower die cavity 12 and the fine forging lower die cavity 13. Further, the lower surface of the upper die 2 is also formed with an upper burr accommodating surface 25, and the upper burr accommodating surface 25 is located outside the pre-forging upper die cavity 22 and the fine forging upper die cavity 23, and the upper burr accommodating surface 25 is arranged opposite to the lower burr accommodating surface 15. The upper burr accommodating surface 25 cooperates with the lower burr accommodating surface 15, so that metal flows between the upper burr accommodating surface 25 and the lower burr accommodating surface 15 during forging, thereby forming burrs.

[0036] According to one embodiment of the utility model, a plurality of lower ribs 16 are arranged between the pre-forging lower die cavity 12 and the fine forging lower die cavity 13, and a plurality of upper ribs 24 are arranged between the pre-forging upper die cavity 22 and the fine forging upper die cavity 23. During forging, the plurality of lower ribs 16 and the plurality of upper ribs 24 are arranged alternately.

[0037] In this embodiment, by providing multiple lower ribs 16 and multiple upper ribs 24 to cooperate with each other, the flash is bent between the multiple lower ribs 16 and the multiple upper ribs 24, which hinders the outward flow of metal and facilitates the metal to fill a deeper cavity.

[0038] According to one embodiment of the utility model, both the lower die 1 and the upper die 2 are provided with an ejection hole 17 penetrating in the thickness direction, and the ejection hole is located in the flash area of ​​the forging. An ejector rod can be arranged in the ejection hole 17, and after forging, the ejector rod pushes the flash, thereby lifting the forging from the cavity to a certain height for easy grasping by the robot.

[0039] In this embodiment, waist-shaped grooves 18 are provided on the sides of the lower die 1 and the upper die 2, and a plurality of heating holes 19 are provided at intervals in the waist-shaped grooves 18. The heating holes 19 are used to place the heating rods. That is, the waist-shaped holes 18 can facilitate the melting of the head of the heating rod, and can also prevent the release agent sprayed during forging from flowing into the heating holes 19.

[0040] According to an embodiment of the utility model, the side surfaces of the lower mold 1 and the upper mold 2 are also provided with hanging holes. On this basis, the lower surface of the lower mold 1 and the upper surface of the upper mold 2 are both provided with keyways for installation and positioning.

[0041] Since the mold is heavy, a lifting hole is set on the side to facilitate lifting by a crane, and keyways are set on both the lower mold 1 and the upper mold 2 to ensure installation accuracy and efficiency, thereby improving forging accuracy.

[0042] The beneficial effect of the utility model is that, by arranging a pre-forging lower die cavity 12 and a fine forging lower die cavity 13 on the lower die 1, and arranging a pre-forging upper die cavity 22 and a fine forging upper die cavity 23 on the upper die 2, pre-forging and fine forging are simultaneously performed in one stamping, and the pre-forged parts can be fine forged in time, and the production efficiency is relatively high. By arranging an arc-shaped positioning groove 121 and a positioning end face 122 in the middle of the pre-forging lower die cavity 12, on the one hand, the side of the bar is supported to prevent the bar from rolling, and on the other hand, the end face of the bar can be positioned, so that the bar put into the pre-forging lower die cavity 12 is finally kept in the same forging position, thereby ensuring complete filling and improving the forging effect.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A forging die for an intermediate cross beam, characterized in that: include: A lower die (1), wherein a pre-forging lower die cavity (12) and a fine forging lower die cavity (13) are arranged at intervals on the upper surface of the lower die (1), an arc-shaped positioning groove (121) and a positioning end face (122) are arranged in the middle of the pre-forging lower die cavity (12), the arc-shaped positioning groove (121) and the positioning end face (122) are arranged at intervals along the length direction of the pre-forging lower die cavity (12), the arc-shaped positioning groove (121) is used to support and position the side of the bar material, and the positioning end face (122) is used to position the end face of the bar material; An upper die (2), wherein a pre-forging upper die cavity (22) and a fine forging upper die cavity (23) are arranged at intervals on the lower surface of the upper die (2), wherein the pre-forging upper die cavity (22) corresponds to the pre-forging lower die cavity (12), and the fine forging upper die cavity (23) corresponds to the fine forging lower die cavity (13).

2. The forging die for the intermediate cross beam according to claim 1, characterized in that: The lower die (1) is provided with a guide positioning groove (11), and the upper die (2) is provided with a guide positioning protrusion (21). During forging, the guide positioning protrusion (21) enters the guide positioning groove (11) to complete the guide fit.

3. The forging die for the intermediate cross beam according to claim 1, characterized in that: Both ends of the pre-forging lower die cavity (12) and the fine forging lower die cavity (13) along the length direction are provided with raised parts (14), and the upper end surfaces of the raised parts (14) are plane.

4. The forging die for the intermediate cross beam according to claim 1, characterized in that: The upper surface of the lower die (1) is also formed with a lower burr accommodating surface (15), and the lower burr accommodating surface (15) is located outside the pre-forging lower die cavity (12) and the fine forging lower die cavity (13).

5. The forging die for the intermediate cross beam according to claim 1, characterized in that: A plurality of lower ribs (16) are arranged between the pre-forging lower die cavity (12) and the fine forging lower die cavity (13), and a plurality of upper ribs (24) are arranged between the pre-forging upper die cavity (22) and the fine forging upper die cavity (23). During forging, the plurality of lower ribs (16) and the plurality of upper ribs (24) are arranged alternately.

6. The forging die for the intermediate cross beam according to claim 1, characterized in that: The lower die (1) and the upper die (2) are both provided with an ejection hole (17) penetrating along the thickness direction, and the ejection hole is located in the flash area of ​​the forging.

7. The forging die for the intermediate cross beam according to claim 1, characterized in that: The sides of the lower mold (1) and the upper mold (2) are both provided with waist-shaped grooves (18), and a plurality of heating holes (19) are arranged at intervals in the waist-shaped grooves (18), and the heating holes (19) are used to place heating rods.

8. The forging die for the intermediate cross beam according to claim 4, characterized in that: The lower surface of the upper die (2) is also formed with an upper burr accommodating surface (25), and the upper burr accommodating surface (25) is located outside the pre-forging upper die cavity (22) and the fine forging upper die cavity (23), and the upper burr accommodating surface (25) is arranged opposite to the lower burr accommodating surface (15).

9. The forging die for the intermediate cross beam according to claim 1, characterized in that: The sides of the lower die (1) and the upper die (2) are also provided with lifting holes.

10. The forging die for the intermediate cross beam according to claim 1, characterized in that: The lower surface of the lower mold (1) and the upper surface of the upper mold (2) are both provided with key grooves for installation and positioning.

Images