Injection mold for shell of tail lamp of electric vehicle

Abstract

The utility model provides an injection mold for an electric vehicle tail lamp shell, and belongs to the technical field of electric vehicle manufacturing. The injection mold comprises a lower mold base, a mold core, an upper mold block and an upper mold frame, an embedding groove allowing the mold core to be embedded is formed in the upper end face of the lower mold base, a material returning groove is formed in a mold cavity, a material ejecting block is arranged in the material returning groove, a mounting groove is formed in the lower mold base, a material ejecting frame is arranged in the mounting groove, and a limiting barrel is fixed to the bottom of the mounting groove; the material ejecting frame comprises two driving rods vertically inserted into the mounting groove, the two driving rods are connected and fixed through a horizontal plate, the driving rods are inserted into the limiting cylinders, the driving rods are sleeved with springs, the upper ends of the springs abut against the horizontal plate, the lower ends of the springs abut against the upper ends of the limiting cylinders, and the lower ends of the material ejecting blocks are fixedly connected with square ejecting columns. The square ejecting column sequentially penetrates through the die core, the lower die base and the horizontal plate, and a clamping assembly capable of clamping the square ejecting column is arranged on the lower end face of the horizontal plate. The injection mold is simple in structure, convenient to replace and suitable for manufacturing tail lamp shells of various sizes and shapes.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric vehicle manufacturing and relates to an injection mold for an electric vehicle taillight shell. Background Art

[0002] The taillight shell of electric vehicles is used to protect the LED taillights. The sizes and shapes of taillight shells are varied, including diamond, circle, square, and various irregular polygons. Each design of a taillight shell requires a new set of injection molds, which not only wastes materials, costs and time, but also cannot quickly replace the mold according to the actual production model. It has poor flexibility and a low range of use, and is not suitable for small-batch and multi-specification taillight shell production. Utility Model Content

[0003] The utility model aims to solve the above problems in the prior art and proposes an injection mold for an electric vehicle taillight housing, which has a simple structure and is easy to replace and can be used to manufacture taillight housings of various sizes and shapes.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an injection mold for an electric vehicle taillight shell, comprising a lower mold base, a mold core, an upper module, and an upper mold frame, characterized in that the mold core is in a square shape, the upper end surface of the lower mold base is provided with an embedding groove for the mold core to be embedded, a plurality of guide sleeves are fixed to the upper end surface of the lower mold base, a plurality of guide pillars slidingly matched with the guide sleeves are fixed to the lower end surface of the upper mold frame, the upper module is fixed to the lower end surface of the upper mold frame by bolts, a mold cavity is provided on the mold core, a material return groove is provided in the mold cavity, a material ejection block is provided in the material return groove, and the lower mold base is provided with a mold core. A mounting groove is opened in the middle, a ejection rack is opened in the mounting groove, a limiting cylinder is fixed at the bottom of the mounting groove, the ejection rack includes two driving rods vertically inserted into the mounting groove, the two driving rods are connected and fixed by a horizontal plate, the driving rod is inserted into the limiting cylinder, a spring is sleeved on the driving rod, the upper end of the spring abuts against the horizontal plate, the lower end of the spring abuts against the upper end of the limiting cylinder, a square ejection column is fixedly connected to the lower end of the ejection block, the square ejection column passes through the mold core, the lower mold base and the horizontal plate in sequence, and a clamping assembly that can clamp the square ejection column is provided on the lower end surface of the horizontal plate.

[0005] Furthermore, the upper mold frame is in an I-shape, and a groove is formed on the upper mold frame, the upper module is embedded in the groove, and an injection tube is connected to the upper end of the upper mold frame, and the injection tube passes through the upper module and communicates with the mold cavity.

[0006] Furthermore, the guide sleeves are provided in four numbers and are distributed in a matrix. After the upper mold frame and the lower mold base are molded together, the driving rod is pressed into the lower mold base by the upper mold frame.

[0007] Furthermore, steps are provided on both sides of the lower mold base, the guide sleeves are arranged on the steps, the positioning pins are inserted into the embedding grooves from the side of the steps, and the side of the mold core is provided with positioning through holes for inserting the positioning pins, and both ends of the positioning pins are locked by nuts.

[0008] Furthermore, the clamping assembly includes a threaded seat and a locking screw fixed to the lower end of the horizontal plate, the threaded seat is provided with a transversely arranged threaded hole, the locking screw is threadedly connected to the threaded hole, the front end of the locking screw abuts against the side of the square top column, and the threaded seat has two and is respectively located on both sides of the square top column. The clamping assembly is not only used to make the square top column and the ejector rack rise and fall together, but also to adjust the height of the square top column. When the driving rod is completely immersed in the lower die seat, the ejector block is also completely immersed in the ejector groove.

[0009] Furthermore, the top material block is in the shape of an elongated strip.

[0010] Under the action of the spring, the horizontal plate rests on the top wall of the mounting groove. When the mold is closed, the upper mold frame moves downward, pressing the protruding driving rod into the lower mold base, and the square ejector column also sinks, so that the ejector block is embedded in the return groove, and the plastic raw material is transported into the injection tube to fill the entire mold cavity. After cooling and shaping, the injection molding machine drives the upper mold frame to move upward. Under the action of the spring, the taillight shell is ejected from the mold cavity, and the material can be easily removed.

[0011] When replacing the mold core and the upper module, you only need to unscrew the nut and take out the locating pin to take out the mold core, and unscrew the bolt to remove the upper module.

[0012] Compared with the prior art, the injection mold of the electric vehicle taillight housing has the following advantages:

[0013] 1. Simple structure, easy operation, convenient use, automatic material lifting by spring, no need for additional power source such as cylinder to unload.

[0014] 2. The mold core and upper module can be quickly replaced, which is convenient for manufacturing various tail light housings, with good flexibility and wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the injection mold of the electric vehicle taillight shell.

[0016] Figure 2 It is a cross-sectional view of the injection mold of the electric vehicle taillight housing.

[0017] In the figure, 1. lower mold base; 2. mold core; 3. upper mold module; 4. upper mold frame; 5. guide sleeve; 6. guide column; 7. mold cavity; 8. material withdrawal groove; 9. ejector block; 10. mounting groove; 11. limiting cylinder; 12. driving rod; 13. horizontal plate; 14. square ejector column; 15. step; 16. positioning pin; 17. nut; 18. threaded seat; 19. locking screw; 20. spring; 21. injection tube. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1-2 As shown, the injection mold of the electric vehicle taillight shell includes a lower mold base 1, a mold core 2, an upper module 3, and an upper mold frame 4. The mold core 2 is in a square shape. The upper end surface of the lower mold base 1 is provided with an embedding groove for the mold core 2 to be embedded. A plurality of guide sleeves 5 are fixed to the upper end surface of the lower mold base 1. A plurality of guide pillars 6 that slide with the guide sleeves 5 are fixed to the lower end surface of the upper mold frame 4. The upper module 3 is fixed to the lower end surface of the upper mold frame 4 by bolts. A mold cavity 7 is provided on the mold core 2. A material withdrawal groove 8 is provided in the mold cavity 7. A material ejection block 9 is provided in the material withdrawal groove 8. The material ejection block 9 is in a long strip shape.

[0020] The upper mold frame 4 is in an I-shape, and has a groove, in which the upper mold block 3 is embedded. The upper end of the upper mold frame 4 is connected to an injection tube 21, which passes through the upper mold block 3 and communicates with the mold cavity 7. The guide sleeves 5 have four and are distributed in a matrix. After the upper mold frame 4 and the lower mold base 1 are molded together, the driving rod 12 is pressed into the lower mold base 1 by the upper mold frame 4.

[0021] The lower die base 1 has steps 15 on both sides, the guide sleeve 5 is arranged on the steps 15 , the positioning pin 16 is inserted into the embedding groove from the side of the step 15 , and the side of the mold core 2 has a positioning through hole for the positioning pin 16 to be inserted, and both ends of the positioning pin 16 are locked by nuts 17 .

[0022] A mounting groove 10 is provided in the lower die base 1, and a ejecting rack is provided in the mounting groove 10. A limiting cylinder 11 is fixed at the bottom of the mounting groove 10. The ejecting rack includes two driving rods 12 vertically inserted into the mounting groove 10, and the two driving rods 12 are connected and fixed by a horizontal plate 13. The driving rod 12 is inserted into the limiting cylinder 11, and a spring 20 is sleeved on the driving rod 12. The upper end of the spring 20 abuts against the horizontal plate 13, and the lower end of the spring 20 abuts against the upper end of the limiting cylinder 11. A square ejecting column 14 is fixedly connected to the lower end of the ejecting block 9. The square ejecting column 14 passes through the mold core 2, the lower die base 1 and the horizontal plate 13 in sequence, and a clamping assembly that can clamp the square ejecting column 14 is provided on the lower end surface of the horizontal plate 13.

[0023] Specifically, the clamping assembly includes a threaded seat 18 and a locking screw 19 fixed to the lower end of the horizontal plate 13. The threaded seat 18 is provided with a transversely arranged threaded hole. The locking screw 19 is threadedly connected to the threaded hole. The front end of the locking screw 19 abuts against the side of the square top column 14. The threaded seat 18 has two and is respectively located on both sides of the square top column 14. The clamping assembly is not only used to make the square top column 14 rise and fall together with the ejector frame, but also to adjust the height of the square top column 14. When the driving rod 12 is completely immersed in the lower die base 1, the ejector block 9 is also completely immersed in the ejector groove 8.

[0024] Under the action of the spring 20, the horizontal plate 13 rests on the top wall of the mounting groove 10. When the mold is closed, the upper mold frame 4 moves downward, pressing the protruding driving rod 12 into the lower mold base 1, and the square ejector column 14 also sinks accordingly, so that the ejector block 9 is embedded in the material return groove 8, and the plastic raw material is transported into the injection tube 21 to fill the entire mold cavity 7. After cooling and shaping, the injection molding machine drives the upper mold frame 4 to move upward. Under the action of the spring 20, the taillight housing is ejected from the mold cavity 7, and the material can be easily removed.

[0025] When replacing the mold core 2 and the upper module 3, it is only necessary to unscrew the nut 17 and take out the positioning pin 16, then the mold core 2 can be taken out, and the upper module 3 can be removed by unscrewing the bolt.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An injection mold for an electric vehicle taillight housing, comprising a lower mold base, a mold core, an upper mold block, and an upper mold frame. It is characterized in that The mold core is square-shaped, and the upper end surface of the lower mold base is provided with an embedding groove for the mold core to be embedded. A plurality of guide sleeves are fixed on the upper end surface of the lower mold base, and a plurality of guide pillars slidingly matched with the guide sleeves are fixed on the lower end surface of the upper mold frame. The upper module is fixed to the lower end surface of the upper mold frame by bolts. A mold cavity is provided on the mold core, and a material withdrawal groove is provided in the mold cavity. A ejecting block is provided in the material withdrawal groove. An installation groove is provided in the lower mold base, and an ejecting frame is provided in the installation groove. A limiting cylinder is fixed at the bottom of the installation groove. The ejecting frame includes two driving rods vertically inserted into the installation groove, and the two driving rods are connected and fixed by a horizontal plate. The driving rod is inserted into the limiting cylinder. A spring is sleeved on the driving rod, and the upper end of the spring rests on the horizontal plate, and the lower end of the spring rests on the upper end of the limiting cylinder. The lower end of the ejecting block is fixedly connected with a square ejecting column, and the square ejecting column passes through the mold core, the lower mold base and the horizontal plate in sequence. A clamping assembly that can clamp the square ejecting column is provided on the lower end surface of the horizontal plate.

2. The injection mold for the electric vehicle taillight housing according to claim 1, It is characterized in that The upper mold frame is in an I-shape, and is provided with a groove, in which the upper module is embedded. The upper end of the upper mold frame is connected with an injection tube, which passes through the upper module and is connected with the mold cavity.

3. The injection mold for the electric vehicle taillight housing according to claim 1, It is characterized in that The guide sleeves are provided in four numbers and are distributed in a matrix. After the upper mold frame and the lower mold base are molded together, the driving rod is pressed into the lower mold base by the upper mold frame.

4. The injection mold for the electric vehicle taillight housing according to claim 1, It is characterized in that Steps are arranged on both sides of the lower die base, guide sleeves are arranged on the steps, positioning pins are inserted into the embedding grooves from the side of the steps, positioning through holes for inserting the positioning pins are opened on the side of the mold core, and both ends of the positioning pins are locked by nuts.

5. The injection mold for the electric vehicle taillight housing according to claim 1, It is characterized in that The clamping assembly includes a threaded seat and a locking screw fixed at the lower end of the horizontal plate. The threaded seat is provided with a transversely arranged threaded hole. The locking screw is threadedly connected to the threaded hole. The front end of the locking screw rests against the side of the square top column. The threaded seat has two and is respectively located on both sides of the square top column.

6. The injection mold for the electric vehicle taillight housing according to claim 1, It is characterized in that The top material block is in the shape of an elongated strip.

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