Injection mold of automobile electric drive safety support

Abstract

The utility model relates to an injection mold of an automobile electric drive safety support, and belongs to the technical field of injection molds of automobile electric drive safety supports. The injection mold for the automobile electric drive safety bracket comprises an upper mold and a lower mold, a guide sliding groove is formed in the lower die; a shaping sliding block is arranged in the guide sliding groove in a sliding manner; shaping stand columns are symmetrically arranged on the lower die; a shaping groove, a shaping piece and a barrel piece positioning pin are arranged on the lower die around the shaping stand column; a plate positioning pin A and a plate positioning pin B are sequentially arranged on the lower die on the two sides of the shaping stand column; a plurality of positioning counter bores are formed in the bottom of the shaping groove; and an injection molding hole is formed in the upper mold 26. The injection mold for the automobile electric drive safety bracket is compact in structure and ingenious in design, solves the problem of low qualification rate caused by easy approaching of metal plates in an existing injection molding mode, and is particularly suitable for the production and use requirements of the automobile electric drive safety bracket.

Description

Technical Field

[0001] This utility model relates to an injection mold for an electric vehicle safety bracket, belonging to the technical field of injection molds for electric vehicle safety brackets. Background Technology

[0002] The electric vehicle safety bracket is integrally injection molded from plastic; it contains multiple inserts. During production, the inserts are positioned on the mold before injection molding, thus completing the injection molding process. The internal inserts of the electric vehicle safety bracket include a metal sleeve 1 and two sets of metal plates 2; the metal plates 2 are equipped with connecting claws 3 (see the instruction manual). Figure 14 , 15 (and 16); the two sets of metal plates 2 are close together; when using existing molds for production, the two sets of metal plates 2 will move closer together under the impact of the molten plastic, thus the existing molds produce automotive electric drive safety brackets with a high scrap rate; therefore, it is necessary to develop a special mold to solve the above problems existing in the current production method of automotive electric drive safety brackets. Summary of the Invention

[0003] The purpose of this utility model is to provide an injection mold for an electric drive safety bracket that is compact in structure and ingenious in design, so as to solve the problem of high scrap rate in the existing production method of electric drive safety bracket.

[0004] The technical solution of this utility model is:

[0005] An injection mold for an electric drive safety bracket for automobiles includes an upper mold and a lower mold; characterized in that: a guide groove is provided on the lower mold; a shaping slider is slidably mounted in the guide groove; shaping columns are symmetrically arranged on the lower mold; shaping grooves, shaping parts, and cylindrical positioning pins are provided on the lower mold around the shaping columns; plate positioning pins A and B are sequentially provided on the lower mold on both sides of the shaping columns; multiple positioning countersunk holes are provided at the bottom of the shaping grooves; injection holes are provided on the upper mold; during operation, two sets of metal plates are mounted on the lower mold through plate positioning pins A and B; the gap between the injection holes and the two sets of metal plates corresponds to the gap between them.

[0006] The lower mold has positioning protrusions at the four corners of its upper end; and multiple ejector pins are mounted on the lower mold via guide sleeves.

[0007] The upper mold has positioning grooves at the four corners of its lower end; when the upper and lower molds are closed, the positioning protrusions are inserted into the corresponding positioning grooves.

[0008] The upper mold has a sealing surface in the middle; a relief groove is provided on one side of the sealing surface; and multiple shaping blocks are provided on the upper mold on both sides of the sealing surface.

[0009] The shaping slider has a block structure with a "Z" shaped cross-section; one end of the shaping slider is provided with a T-shaped opening; the other end of the shaping slider is a shaping cover plate; a shaping protrusion is provided on the shaping slider below the shaping cover plate; guide rails are provided on both sides of the shaping slider.

[0010] The advantages of this utility model are:

[0011] The injection mold of this electric drive safety bracket has a compact structure and ingenious design. By using dual positioning of the metal plates and injecting molten plastic between the metal plates, it solves the problem of low yield caused by the metal plates easily coming together in the existing injection molding method. It is particularly suitable for the production and use of electric drive safety brackets. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0014] Figure 3 This is a top view of the structure of this utility model;

[0015] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0016] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0017] Figure 6 This is a schematic diagram of the structure of the lower mold with insert of this utility model;

[0018] Figure 7 This is a schematic diagram of the structure of the lower mold with insert of this utility model;

[0019] Figure 8 This is a schematic diagram of the lower mold of this utility model;

[0020] Figure 9 This is a schematic diagram of the lower mold of this utility model;

[0021] Figure 10 for Figure 9 Enlarged structural diagram at point C;

[0022] Figure 11 This is a schematic diagram of the structure of the shaping slider of this utility model;

[0023] Figure 12 This is a schematic diagram of the lower mold of this utility model;

[0024] Figure 13 This is a schematic diagram of the upper mold of this utility model;

[0025] Figure 14 This is a schematic diagram of the structure of an electric drive safety bracket for automobiles;

[0026] Figure 15 A schematic diagram of the internal insert of an automotive electric drive safety bracket;

[0027] Figure 16 This is a schematic diagram of the internal insert of an electric drive safety bracket for automobiles.

[0028] In the diagram: 1. Metal sleeve; 2. Metal sheet; 3. Connecting claw; 4. Lower mold; 5. Guide groove; 6. Shaping slider; 7. Shaping column; 8. Shaping groove; 9. Shaping component; 10. Cylindrical positioning pin; 11. Plate positioning pin A; 12. Plate positioning pin B; 13. Positioning countersunk hole; 14. Injection hole; 15. Positioning protrusion; 16. Guide sleeve; 17. Ejector pin; 18. Positioning groove; 19. Sealing surface; 20. Clearance countersunk groove; 21. Shaping block; 22. T-shaped opening; 23. Shaping cover plate; 24. Shaping protrusion; 25. Guide slide rail; 26. Upper mold. Detailed Implementation

[0029] The injection mold for this automotive electric drive safety bracket includes an upper mold 26 and a lower mold 4 (see the attached instruction manual). Figure 1 and 2 ).

[0030] Positioning protrusions 15 are provided at the four corners of the upper end of the lower mold 4 (see the instruction manual). Figure 6 , 7 (and 8); positioning grooves 18 are provided at the four corners of the lower end of the upper mold 26 (see the instruction manual appendix). Figure 13 When the upper mold 26 and the lower mold 4 are closed, the positioning protrusion 15 is inserted into the corresponding positioning groove 18.

[0031] The purpose of setting the positioning protrusion 15 and the positioning groove 18 is to enable the positioning protrusion 15 to be inserted into the corresponding positioning groove 18 during the mold closing process of the upper mold 26 and the lower mold 4, so that the upper mold 26 and the lower mold 4 can complete the mold closing work smoothly and avoid the problem of mold closing failure caused by deviation from the trajectory.

[0032] The lower mold 4 is provided with a guide groove 5; a shaping slider 6 is slidably mounted in the guide groove 5 (see the instruction manual appendix). Figure 6 and 7 The shaping slider 6 has a block structure with a "Z"-shaped cross-section; one end of the shaping slider 6 is provided with a T-shaped opening 22; guide rails 25 are provided on both sides of the shaping slider 6 (see the instruction manual appendix). Figure 11The shaping slider 6 can be connected to external equipment through the T-slot 22. During operation, the external equipment can drive the shaping slider 6 to slide back and forth on the lower mold 4 through the T-slot 22.

[0033] The other end of the shaping slider 6 is a shaping cover plate 23; a shaping protrusion 24 is provided on the shaping slider 6 below the shaping cover plate 23 (see the instruction manual appendix). Figure 11 During injection molding, the shaping shield 23 and the shaping protrusion 24 have the function of shaping.

[0034] The lower mold 4 is symmetrically provided with shaping columns 7; the shaping cover plate 23 of the shaping slider 6 is slidably connected to the upper end face of the shaping column 7.

[0035] The lower mold 4 around the shaping column 7 is provided with shaping grooves 8, shaping parts 9, and cylindrical positioning pins 10 (see the instruction manual appendix). Figure 8 and 9 During injection molding, the metal sleeve 1 will be fitted onto the locating pin 10.

[0036] The lower mold 4 on both sides of the shaping column 7 is provided with plate positioning pins A11 and B12 in sequence (see the instruction manual). Figure 8 During injection molding, the two sets of metal plates 2 can be installed on the lower mold 4 by inserting them with plate locating pins A11 and B12, thus achieving single positioning.

[0037] The bottom of the shaping groove 8 is provided with multiple positioning countersunk holes 13 (see the instruction manual). Figure 9 and 10 During injection molding, the connecting claws 3 on the metal sheet 2 can be inserted into the corresponding positioning countersunk holes 13 to achieve double positioning.

[0038] The upper mold 26 is provided with injection holes 14 (see the instruction manual). Figure 1 and 3 During operation, the two sets of metal plates 2 are mounted on the lower mold 4 via plate locating pins A11 and B12; the gap between the injection hole 14 and the two sets of metal plates 2 corresponds (see the instruction manual appendix). Figure 3 , 4 (and 5). The purpose of setting the injection hole 14 in this way is to allow the molten plastic to be injected into the space between the two sets of metal plates 2 during injection molding; thus, under the pressure of the molten plastic, the two sets of metal plates 2 only tend to move outward and do not move closer to each other, thereby solving the problem of low yield caused by the metal plates easily moving closer together in the existing injection molding method.

[0039] Multiple ejector pins 17 are mounted on the lower mold 4 via guide sleeves 16 (see instruction manual appendix). Figure 12After the upper mold 26 and the lower mold 4 separate, the ejector pin 17 moves upward to eject the molded workpiece from the lower mold 4, thus assisting in the unloading of the workpiece.

[0040] A sealing surface 19 is provided in the middle of the upper mold 26; the sealing surface 19 is intermittently fitted and connected to the shaping baffle 23. A relief groove 20 is provided on one side of the sealing surface 19; multiple shaping blocks 21 are provided on the upper mold 26 on both sides of the sealing surface 19 (see the appendix of the instruction manual). Figure 13 During the injection molding process where the upper mold 26 and lower mold 4 are closed, the molten plastic can be cooled and formed into the designed structure under the action of the shaping block 21.

[0041] In operation, the injection mold for this automotive electric drive safety bracket first separates the upper mold 26 and the lower mold 4, then the shaping slider 6 retracts to the outer position; subsequently, the metal sleeve 1 is fitted onto the locating pin 10, and the two sets of metal plates 2 are installed on the lower mold 4 by inserting them into the plate locating pins A11 and B12. At this time, the connecting claws 3 on the metal plates 2 can be inserted into the corresponding locating countersunk holes 13.

[0042] After the above actions are completed, the shaping slider 6, upper mold 26, and lower mold 4 close. Then, molten plastic is injected through the injection hole 14 between the two sets of metal plates 2 and finally fills the mold cavity. After injection molding, the shaping slider 6, upper mold 26, and lower mold 4 reset, and the ejector pin 17 moves upward to eject the molded workpiece from the lower mold 4, thus assisting in the workpiece unloading process. At this point, the injection mold has completed the injection molding of the automotive electric drive safety bracket, and the mold can enter the next work cycle.

[0043] The injection mold of this electric vehicle safety bracket has a compact structure and ingenious design. By doubly positioning the metal plate 2 and injecting molten plastic between the metal plates 2, it solves the problem of low yield caused by the metal plates 2 easily coming together in the existing injection molding method. It is particularly suitable for the needs of the production and use of electric vehicle safety brackets.

Claims

1. An injection mold for an electric drive safety bracket for automobiles, comprising an upper mold (26) and a lower mold (4); characterized in that: The lower mold (4) is provided with a guide groove (5); a shaping slider (6) is slidably installed in the guide groove (5); shaping columns (7) are symmetrically arranged on the lower mold (4); shaping grooves (8), shaping parts (9) and cylindrical positioning pins (10) are provided on the lower mold (4) around the shaping columns (7); plate positioning pins A (11) and B (12) are arranged sequentially on the lower mold (4) on both sides of the shaping columns (7); multiple positioning countersunk holes (13) are provided at the bottom of the shaping groove (8); injection holes (14) are provided on the upper mold (26); during operation, two sets of metal plates (2) are installed on the lower mold (4) through plate positioning pins A (11) and B (12); the gap between the injection holes (14) and the two sets of metal plates (2) corresponds to the gap between them.

2. The injection mold for an automotive electric drive safety bracket according to claim 1, characterized in that: The lower mold (4) is provided with positioning protrusions (15) at the four corners of the upper end; multiple ejector pins (17) are installed on the lower mold (4) through guide sleeves (16).

3. The injection mold for an automotive electric drive safety bracket according to claim 2, characterized in that: The upper mold (26) has positioning grooves (18) at the four corners of its lower end; when the upper mold (26) and the lower mold (4) are closed, the positioning protrusions (15) are inserted into the corresponding positioning grooves (18).

4. The injection mold for an automotive electric drive safety bracket according to claim 1, characterized in that: The upper mold (26) is provided with a sealing surface (19) in the middle; a relief groove (20) is provided on one side of the sealing surface (19); and multiple shaping blocks (21) are provided on the upper mold (26) on both sides of the sealing surface (19).

5. The injection mold for an automotive electric drive safety bracket according to claim 1, characterized in that: The shaping slider (6) has a block structure with a "Z" shaped cross section; one end of the shaping slider (6) is provided with a T-shaped opening (22); the other end of the shaping slider (6) is provided with a shaping cover plate (23); a shaping protrusion (24) is provided on the shaping slider (6) below the shaping cover plate (23); guide rails (25) are provided on both sides of the shaping slider (6).

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