Die-casting die for new energy automobile shell part

Abstract

The utility model relates to the technical field of new energy automobile part die-casting forming devices, and provides a die-casting die for new energy automobile shell parts, which comprises a first core rod, a second core rod, a third core rod, a first gear set, a second gear set, a third gear set, a first rack, a second rack and a third rack, the first core rod, the first gear set and the first rack are sequentially meshed, the second core rod, the second gear set and the second rack are sequentially meshed, and the third core rod, the third gear set and the third rack are sequentially meshed. Compared with the prior art, the first mold core rod, the second mold core rod and the third mold core rod are arranged in the fixed mold assembly and drive the first gear set, the second gear set and the third gear set to rotate in the fixed mold assembly through the first rack, the second rack and the third rack respectively; and the first mold core rod, the second mold core rod and the third mold core rod can be smoothly separated from a shell part in a forming cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting forming devices for new energy vehicle parts, and particularly relates to a die-casting mold for new energy vehicle shell parts. Background Art

[0002] As Figure 1 Shown is a new energy vehicle shell part, which is formed by die-casting process. There is a first threaded hole 1 and two second threaded holes 2 on the vehicle shell. In order to facilitate the demolding of the shell part in the traditional die-casting process, the outer shape of the shell part and three bottom holes are first die-cast, and then the threaded holes are machined by machining process. Although this operation process can achieve the die-casting production goal of the shell part, it undoubtedly adds additional manufacturing processes, resulting in an increase in the overall manufacturing cost of the shell part. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a die-casting mold for new energy vehicle shell parts in view of the current situation of the prior art.

[0004] The technical solution adopted by the utility model to solve the above technical problem is to propose a die-casting mold for new energy vehicle shell parts. The shell part has a first threaded hole located in the middle position of the shell part, and second threaded holes provided on two side walls of the shell part. The two side walls are oppositely arranged and each side wall corresponds to one of the second threaded holes. The die-casting mold has a fixed mold assembly and a movable mold assembly that are movably matched. When the fixed mold assembly and the movable mold assembly are fitted together, a forming cavity is formed between the fixed mold assembly and the movable mold assembly. The die-casting mold includes:

[0005] A first core rod whose axial direction is parallel to the direction in which the movable mold assembly points to the fixed mold assembly, and a second core rod and a third core rod symmetrically arranged along the axial direction of the first core rod. One ends of the first core rod, the second core rod and the third core rod all extend into the forming cavity. The first core rod is used for forming the first threaded hole, and the second core rod and the third core rod are both used for forming the second threaded hole;

[0006] A first gear set, a second gear set and a third gear set that are all rotatably arranged in the fixed mold assembly. The first gear set is connected to the first core rod, the second gear set is connected to the second core rod, and the third gear set is connected to the third core rod;

[0007] The first rack, the second rack, and the third rack are all movably connected to the fixed mold assembly. The first rack meshes with the first gear set, the second rack meshes with the second gear set, and the third rack meshes with the third gear set. Among them,

[0008] The second gear set and the third gear set are symmetrically arranged. The second rack meshes with the side of the second gear set facing the moving mold assembly, and the third rack meshes with the side of the third gear set facing the fixed mold assembly, so as to have a height difference between the second rack and the third rack along the direction from the moving mold assembly to the fixed mold assembly.

[0009] In the above die-casting mold for new energy vehicle shell parts, external gears are arranged on the outer sides of the first core rod, the second core rod, and the third core rod.

[0010] In the above die-casting mold for new energy vehicle shell parts, the first gear set, the second gear set, and the third gear set all include:

[0011] A first gear meshing with the external gear, and the first gear is rotatably arranged on the fixed mold assembly;

[0012] A second gear coaxially arranged with the first gear, and the diameter of the second gear is smaller than that of the first gear.

[0013] In the above die-casting mold for new energy vehicle shell parts, the fixed mold assembly includes a fixed mold frame and a fixed mold backing plate. The fixed mold frame is movably abutted against the moving mold assembly. The fixed mold backing plate is arranged at one end of the fixed mold frame away from the moving mold assembly. A first bearing is arranged at the end of the first gear set facing the moving mold assembly, and a second bearing is arranged at the other end of the first gear set. A third bearing is arranged on the first core rod. The outer ring of the first bearing is fixed on the fixed mold frame, and the outer rings of the second bearing and the third bearing are both fixed on the fixed mold backing plate.

[0014] In the above die-casting mold for new energy vehicle shell parts, a fixed mold mounting plate is arranged on the fixed mold assembly. The fixed mold mounting plate is connected to the end of the fixed mold backing plate away from the fixed mold frame. Mounting holes are arranged on the fixed mold mounting plate. The outer ring of the third bearing is fixed in the mounting holes, and the first core rod is movably inserted into the mounting holes.

[0015] In the above die-casting mold for a housing part of a new energy vehicle, a first mounting portion and a second mounting portion are formed by the outer side wall of the fixed mold frame being recessed towards the middle position of the fixed mold frame. The first mounting portion and the second mounting portion are arranged opposite to each other. A first baffle is connected to the first mounting portion, and a second baffle is provided on the second mounting portion. The second gear set is rotatably arranged between the first baffle and the first mounting portion, and the second rack is movably inserted between the first baffle and the first mounting portion. The third gear set is rotatably arranged between the second baffle and the second mounting portion, and the third rack is movably inserted between the second baffle and the second mounting portion.

[0016] In the above die-casting mold for a housing part of a new energy vehicle, a roller is rotatably arranged on the second baffle, and a guide groove is provided on the third rack. The roller is movably arranged in the guide groove.

[0017] In the above die-casting mold for a housing part of a new energy vehicle, it further includes:

[0018] Three oil cylinders connected to one side of the fixed mold assembly. The first rack, the second rack, and the third rack each correspond to one of the oil cylinders, and the three oil cylinders are staggeredly distributed on the fixed mold assembly;

[0019] Three limit blocks connected to the other side of the fixed mold assembly. The first rack, the second rack, and the third rack each correspond to one of the limit blocks, which are used to provide limits for the first rack, the second rack, and the third rack.

[0020] Compared with the prior art, the present utility model has the following advantages:

[0021] (1) By arranging a first core rod, a second core rod, and a third core rod in the fixed mold assembly to respectively form a first threaded hole and two second threaded holes, and driving the first gear set, the second gear set, and the third gear set to rotate in the fixed mold assembly through the first rack, the second rack, and the third rack respectively, so that after the first threaded hole and the two second threaded holes are formed, the first core rod, the second core rod, and the third core rod can be smoothly separated from the housing part in the forming cavity;

[0022] (2) By making the meshing direction of the second rack and the second gear set opposite to the meshing direction of the third rack and the third gear set, so that the second rack and the third rack are staggeredly arranged on the fixed mold assembly, making full use of the installation positions outside the fixed mold assembly and reducing the volume of the die-casting mold. Description of the Drawings

[0023] Figure 1 is a three-dimensional view of the housing part;

[0024] Figure 2 This is a three-dimensional view of the die-casting mold of this solution;

[0025] Figure 3 is Figure 2 a three-dimensional view of a partial structure in

[0026] Figure 4 This is a three-dimensional view of the die-casting mold of this solution from another direction;

[0027] Figure 5 is Figure 4 a three-dimensional view of a partial structure in

[0028] Figure 6 This is a three-dimensional view when the oil cylinder, the third rack, the third gear set and the third core are connected;

[0029] Figure 7 This is a three-dimensional view when the oil cylinder, the first rack, the first gear set and the first core are connected;

[0030] Figure 8 This is a three-dimensional view of the connection between the first core and the fixed mold mounting plate.

[0031] In the figure, 1, the first threaded hole; 2, the second threaded hole; 3, the fixed mold assembly; 4, the moving mold assembly; 5, the first core rod; 6, the second core rod; 7, the third core rod; 8, the first gear set; 9, the second gear set; 10, the third gear set; 11, the first rack; 12, the second rack; 13, the third rack; 14, the external gear; 15, the first gear; 16, the second gear; 17, the fixed mold frame; 18, the fixed mold backing plate; 19, the first bearing; 20, the second bearing; 21, the third bearing; 22, the fixed mold mounting plate; 23, the mounting hole; 24, the first mounting portion; 25, the second mounting portion; 26, the first baffle; 27, the second baffle; 28, the roller; 29, the guide groove; 30, the oil cylinder; 31, the limit block. Detailed implementation manners

[0032] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0033] Such as Figures 1 to 8As shown in the figure, a die-casting mold for a housing part of a new energy vehicle of the present utility model, the housing part has a first threaded hole 1 located at the middle position of the housing part, and second threaded holes 2 provided on two side walls of the housing part. The two side walls are oppositely arranged and each side wall is correspondingly provided with a second threaded hole 2. The die-casting mold has a fixed mold assembly 3 and a movable mold assembly 4 that are movably matched. When the fixed mold assembly 3 and the movable mold assembly 4 are fitted together, a molding cavity is formed between the fixed mold assembly 3 and the movable mold assembly 4. The die-casting mold includes: a first core rod 5 whose axis direction is parallel to the direction from the movable mold assembly 4 to the fixed mold assembly 3, and a second core rod 6 and a third core rod 7 that are symmetrically arranged along the axis direction of the first core rod 5. One ends of the first core rod 5, the second core rod 6, and the third core rod 7 all extend into the molding cavity. The first core rod 5 is used for molding the first threaded hole 1, and the second core rod 6 and the third core rod 7 are both used for molding the second threaded hole 2; a first gear set 8, a second gear set 9, and a third gear set 10 that are all rotatably arranged in the fixed mold assembly 3. The first gear set 8 is connected to the first core rod 5, the second gear set 9 is connected to the second core rod 6, and the third gear set 10 is connected to the third core rod 7; a first rack 11, a second rack 12, and a third rack 13 that are all movably connected to the fixed mold assembly 3. The first rack 11 meshes with the first gear set 8, the second rack 12 meshes with the second gear set 9, and the third rack 13 meshes with the third gear set 10.

[0034] The movable mold assembly 4 and the fixed mold assembly 3 are respectively installed on the movable part and the fixed part of the die-casting machine. The movable part of the die-casting machine drives the movable mold assembly 4 to approach or move away from the fixed mold assembly 3 to realize the opening and closing actions of the die-casting mold.

[0035] An external thread for forming the first threaded hole 1 is provided on the outer side of the first core rod 5, and external threads for forming the second threaded hole 2 are provided on the outer sides of the second core rod 6 and the third core rod 7. After the die-casting mold is closed, one end of the first core rod 5, the second core rod 6, and the third core rod 7 extends into the molding cavity. The external threads of the first core rod 5, the second core rod 6, and the third core rod 7 are located at the forming positions of the first threaded hole 1 and the second threaded hole 2. After the die-casting machine injects the metal raw material into the molding cavity, the metal raw material wraps around the outer sides of the first core rod 5, the second core rod 6, and the third core rod 7 to form the first threaded hole 1 and the second threaded hole 2. After the metal raw material in the molding cavity is initially cooled, the die-casting machine drives the moving die assembly 4 to separate from the fixed die assembly 3, putting the die-casting mold in the open mold state. At this time, the first rack 11, the second rack 12, and the third rack 13 drive the first core rod 5, the second core rod 6, and the third core rod 7 to rotate in the fixed die assembly 3 and move away from the product cavity respectively through the first gear set 8, the second gear set 9, and the third gear set 10, so that the first core rod 5, the second core rod 6, and the third core rod 7 are separated from the first threaded hole 1 and the second threaded hole 2 respectively, to realize the demolding of the shell part with threaded holes.

[0036] Among them, the second gear set 9 and the third gear set 10 are symmetrically arranged. The second rack 12 meshes with the side of the second gear set 9 facing the moving die assembly 4, and the third rack 13 meshes with the side of the third gear set 10 facing the fixed die assembly 3, so that there is a height difference between the second rack 12 and the third rack 13 along the direction from the moving die assembly 4 to the fixed die assembly 3, so as to stagger the second rack 12 and the third rack 13 on the fixed die assembly 3, thereby making full use of the installation position outside the fixed die assembly 3 to achieve the purpose of reducing the volume of the die-casting mold.

[0037] External gears 14 are provided on the outer sides of the first core rod 5, the second core rod 6, and the third core rod 7, which are used to realize the meshing between the first core rod 5 and the first gear set 8, the second core rod 6 and the second gear set 9, and the third core rod 7 and the third gear set 10.

[0038] The first gear set 8, the second gear set 9, and the third gear set 10 all include: a first gear 15 meshing with the external gear 14, and the first gear 15 is rotatably arranged on the fixed die assembly 3; a second gear 16, which is coaxially arranged with the first gear 15, and the diameter of the second gear 16 is smaller than that of the first gear 15.

[0039] The three second gears 16 are respectively meshed with the first rack 11, the second rack 12, and the third rack 13. By meshing the second gear 16 with a larger diameter with the external gear 14, the first core rod 5, the second core rod 6, and the third core rod 7 can rotate faster, and the first core rod 5, the second core rod 6, and the third core rod 7 can be separated from the shell part faster.

[0040] The fixed mold assembly 3 includes a fixed mold frame 17 and a fixed mold backing plate 18. The fixed mold frame 17 is in movable abutment against the movable mold assembly 4. The fixed mold backing plate 18 is arranged at one end of the fixed mold frame 17 away from the movable mold assembly 4. One end of the first gear set 8 facing the movable mold assembly 4 is provided with a first bearing 19, and the other end of the first gear set 8 is provided with a second bearing 20. A third bearing 21 is arranged on the first core rod 5. The outer ring of the first bearing 19 is fixed on the fixed mold frame 17, and the outer rings of the second bearing 20 and the third bearing 21 are both fixed on the fixed mold backing plate 18.

[0041] The first bearing 19 and the second bearing 20 are used to realize the rotational connection of the first gear set 8 on the fixed mold assembly 3, and the second bearing 20 is used to realize the connection of the first core rod 5 on the fixed mold assembly 3. Preferably, bearings are also arranged on both sides of the second gear set 9 and the third gear set 10, and bearings are also arranged on the second core rod 6 and the third core rod 7.

[0042] A fixed mold mounting plate 22 is arranged on the fixed mold assembly 3. The fixed mold mounting plate 22 is connected to one end of the fixed mold backing plate 18 away from the fixed mold frame 17. Mounting holes 23 are arranged on the fixed mold mounting plate 22. The outer ring of the third bearing 21 is fixed in the mounting holes 23, and the first core rod 5 is movably inserted into the mounting holes 23.

[0043] The mounting holes 23 are used to fix the third bearing 21, and when the first rack 11 drives the first core rod 5 to rotate, the first core rod 5 can displace in the direction of the mounting holes 23, and finally the first core rod 5 is separated from the housing part.

[0044] A first mounting portion 24 and a second mounting portion 25 are formed by the outer side wall of the fixed mold frame 17 being recessed towards the middle position of the fixed mold frame 17. The first mounting portion 24 and the second mounting portion 25 are arranged opposite to each other. A first baffle 26 is connected to the first mounting portion 24, and a second baffle 27 is arranged on the second mounting portion 25. The second gear set 9 is rotatably arranged between the first baffle 26 and the first mounting portion 24, and the second rack 12 is movably inserted between the first baffle 26 and the first mounting portion 24. The third gear set 10 is rotatably arranged between the second baffle 27 and the second mounting portion 25, and the third rack 13 is movably inserted between the second baffle 27 and the second mounting portion 25.

[0045] The first mounting portion 24 and the first baffle 26 are used to realize the installation of the second gear set 9 and the second rack 12 on the fixed mold assembly 3, and the second mounting portion 25 and the second baffle 27 are used to realize the installation of the third gear set 10 and the third rack 13 on the fixed mold assembly 3.

[0046] A roller 28 is rotatably arranged on the second baffle 27. A guide groove 29 is arranged on the third rack 13. The roller 28 is movably arranged in the guide groove 29 and is used to provide guidance for the movement of the third rack 13.

[0047] This solution further includes: three oil cylinders 30 connected to one side of the fixed mold assembly 3. The first rack 11, the second rack 12, and the third rack 13 each correspond to one oil cylinder 30, which is used to realize the movement of the first rack 11, the second rack 12, and the third rack 13 on the fixed mold assembly 3. Moreover, the three oil cylinders 30 are staggeredly distributed on the fixed mold assembly 3, which is used to make full use of the installation position outside the fixed mold assembly 3 to make the volume of the die-casting mold smaller; three limit blocks 31 connected to the other side of the fixed mold assembly 3. The first rack 11, the second rack 12, and the third rack 13 each correspond to one limit block 31, which is used to provide limits for the first rack 11, the second rack 12, and the third rack 13.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indication will also change accordingly.

[0049] In addition, in the present invention, descriptions such as "first", "second", and "one" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0052] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, without departing from the scope defined by the spirit of the present utility model.

Claims

1. A die-casting mold for a housing part of a new energy vehicle, wherein the housing part has a first threaded hole located in the middle of the housing part, and second threaded holes arranged on two side walls of the housing part, the two side walls are arranged opposite to each other and each side wall has a corresponding second threaded hole, the die-casting mold has a fixed mold component and a movable mold component, when the fixed mold component and the movable mold component are attached, a molding cavity is formed between the fixed mold component and the movable mold component, characterized in that: The die-casting mold comprises: A first core rod with an axial direction parallel to the movable mold assembly and pointing to the fixed mold assembly, and a second core rod and a third core rod symmetrically arranged along the axial direction of the first core rod, one end of the first core rod, the second core rod and the third core rod all extend into the molding cavity, the first core rod is used to form the first threaded hole, and the second core rod and the third core rod are both used to form the second threaded hole; The first gear set, the second gear set and the third gear set are all rotated in the fixed mold assembly, the first gear set is connected to the first core rod, the second gear set is connected to the second core rod, and the third gear set is connected to the third core rod; The first rack, the second rack and the third rack are all movably connected to the fixed mold assembly, the first rack is meshed with the first gear set, the second rack is meshed with the second gear set, and the third rack is meshed with the third gear set, wherein: The second gear set is symmetrically arranged with the third gear set, the second rack is meshed with the side of the second gear set facing the movable mold assembly, and the third rack is meshed with the side of the third gear set facing the fixed mold assembly, so that there is a height difference between the second rack and the third rack along the direction from the movable mold assembly to the fixed mold assembly.

2. A die-casting mold for new energy vehicle housing parts as claimed in claim 1, characterized in that: External gears are arranged on the outer sides of the first core rod, the second core rod and the third core rod.

3. A die-casting mold for new energy vehicle housing parts as claimed in claim 2, characterized in that: The first gear set, the second gear set and the third gear set each include: a first gear meshing with the external gear, the first gear being rotatably disposed on the fixed mold assembly; The second gear is coaxially arranged with the first gear, and the diameter of the second gear is smaller than the diameter of the first gear.

4. A die-casting mold for new energy vehicle housing parts as claimed in claim 1, characterized in that: The fixed die assembly includes a fixed die frame and a fixed die pad, the fixed die frame and the movable die assembly are movably abutted against each other, the fixed die pad is arranged at one end of the fixed die frame away from the movable die assembly, a first bearing is arranged at one end of the first gear set facing the movable die assembly, a second bearing is arranged at the other end of the first gear set, a third bearing is arranged on the first core rod, an outer ring of the first bearing is fixed on the fixed die frame, and outer rings of the second bearing and the third bearing are both fixed on the fixed die pad.

5. A die-casting mold for new energy vehicle housing parts as claimed in claim 4, characterized in that: The fixed die assembly is provided with a fixed die mounting plate, the fixed die mounting plate is connected to one end of the fixed die pad away from the fixed die frame, a mounting hole is provided on the fixed die mounting plate, the outer ring of the third bearing is fixed in the mounting hole, and the first core rod is movably inserted in the mounting hole.

6. A die-casting mold for new energy vehicle housing parts as claimed in claim 4, characterized in that: The outer side wall of the fixed mold frame is recessed toward the middle position of the fixed mold frame to form a first mounting portion and a second mounting portion, the first mounting portion and the second mounting portion are arranged opposite to each other, the first mounting portion is connected to a first baffle plate, the second mounting portion is provided with a second baffle plate, the second gear set is rotatably arranged between the first baffle plate and the first mounting portion, and the second rack is movably inserted between the first baffle plate and the first mounting portion, the third gear set is rotatably arranged between the second baffle plate and the second mounting portion, and the third rack is movably inserted between the second baffle plate and the second mounting portion.

7. A die-casting mold for new energy vehicle housing parts as claimed in claim 6, characterized in that: A roller is rotatably arranged on the second baffle plate, a guide groove is arranged on the third rack, and the roller is movably arranged in the guide groove.

8. A die-casting mold for new energy vehicle housing parts as claimed in claim 1, characterized in that: Also includes: Three oil cylinders connected to one side of the fixed mold assembly, the first rack, the second rack and the third rack each correspond to one oil cylinder, and the three oil cylinders are staggered and distributed on the fixed mold assembly; Three limit blocks are connected to the other side of the fixed mold assembly, and each of the first rack, the second rack and the third rack has a corresponding limit block, which is used to provide limit for the first rack, the second rack and the third rack.

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