A training shell wind cap injection mold

Abstract

The utility model discloses a kind of cannonball bonnet injection mould for training, including upper die and lower die, upper die includes horizontal rod one and the plate one of being set in horizontal rod one bottom, and the conical groove is equipped on plate one, and the bottom of conical groove is equipped with ladder through-hole, lower die includes horizontal rod two and the plate two of being set in horizontal rod two bottom, plate two is ladder structure, and with ladder through-hole is mutually matched, the end of conical groove is equipped with hole, after plate two and conical groove cooperation, with conical groove in same camber surface.The beneficial effects of the utility model are: ensure that gas extrusion is complete in injection molding process, reduce the formation of internal porosity of injection molding blank.

Description

Technical Field

[0001] This utility model relates to the technical field of wind cap injection molding, and in particular to an injection mold for a training shell wind cap. Background Technology

[0002] Existing ammunition wind caps are made of injection-molded plastic and have the following requirements: 1. High dimensional tolerances are required to ensure flight stability; 2. High surface finish is required to minimize airflow. 3. High performance requirements for injection-molded products, ensuring uniform internal density and balanced weight distribution.

[0003] The technical shortcomings of the injection molding industry lie in the difficulty of ensuring closure accuracy or poor venting, resulting in flash, poor density, and internal air bubbles in the injection molded blanks, which cannot meet the above requirements. Therefore, it is necessary to design a special injection mold for wind caps to ensure the quality consistency of the finished wind caps, so that the performance of the ammunition is stable and reliable and meets its usage requirements. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and ensure complete gas extrusion during the injection molding process, thereby reducing the formation of internal pores in the injection molded blank. This invention is a training shell wind cap injection mold.

[0005] The purpose of this utility model is achieved through the following technical solution: a training shell wind cap injection mold, including an upper mold and a lower mold, the upper mold including a horizontal rod and a plate provided at the bottom of the horizontal rod, and the plate is provided with a conical groove, and the bottom of the conical groove is provided with a stepped through hole, the lower mold including a horizontal rod and a plate provided at the bottom of the horizontal rod; Preferably, the second plate has a stepped structure and cooperates with the stepped through hole. The end of the conical groove is provided with a channel. After the second plate cooperates with the conical groove, it is on the same arc surface as the conical groove.

[0006] Preferably, both the first and second transverse rods are provided with threaded through holes, the upper pressure mold is fixed on the external structure of the wind cap, and the lower pressure mold is fixed on the internal structure of the wind cap.

[0007] Preferably, the upper and lower molds are fixed by bolts through transverse rod one and transverse rod two, respectively.

[0008] Preferably, both the upper and lower molds are positioned by four cylindrical protrusions, the lower mold is provided with a vent hole and a mold release hole, and the vent cap has an arc-shaped structure.

[0009] Preferably, the bottom of the second plate is provided with a threaded blind hole, and a fixing plate is provided on the threaded blind hole. The fixing plate is fixed to the bottom of the second plate by bolts. The side wall of the second transverse rod is also provided with a second threaded blind hole.

[0010] This utility model has the following advantages: 1. This utility model includes an upper mold and a lower mold. The upper mold includes a horizontal rod and a plate at the bottom of the horizontal rod. The plate has a conical groove and a stepped through hole at the bottom of the conical groove. The lower mold includes a horizontal rod and a plate at the bottom of the horizontal rod. The upper and lower molds cooperate with each other to ensure the coaxiality of the injection molded blank. The lower mold has a vent hole and a demolding hole to ensure that the gas is completely extruded during the injection molding process and to reduce the formation of internal pores in the injection molded blank. The vent is arc-shaped and a combined ejector pin and air ejector demolding mechanism is designed. Plate 2 has a stepped structure and is designed to fit into the stepped through holes. The end of the tapered groove has a channel. After plate 2 fits into the tapered groove, it is on the same arc surface as the tapered groove, which ensures the requirements of injection molding. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the second plate in this utility model; Figure 3 for Figure 1 Schematic diagram of the cross section at point AA; Figure 4 for Figure 2 A magnified view of a portion of point B in the middle.

[0012] In the figure, there are: upper mold 1, lower mold 2, transverse rod 1, plate 1, tapered groove 5, stepped through hole 6, transverse rod 2 7, plate 2 8, channel 9, threaded blind hole 10, fixing plate 11, and threaded blind hole 2 12. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description: like Figures 1-4 As shown, a training shell wind cap injection mold includes an upper mold 1 and a lower mold 2. The upper mold 1 includes a transverse rod 3 and a plate 4 disposed at the bottom of the transverse rod 3. The plate 4 is provided with a conical groove 5 and a stepped through hole 6 at the bottom of the conical groove 5. The lower mold 2 includes a transverse rod 7 and a plate 8 disposed at the bottom of the transverse rod 7. In this embodiment, plate 2 8 has a stepped structure and cooperates with stepped through hole 6. The end of tapered groove 5 is provided with channel 9. After plate 2 8 cooperates with tapered groove 5, it is on the same arc surface as tapered groove 5.

[0014] In this embodiment, both the first transverse rod 3 and the second transverse rod 7 are provided with threaded through holes. The upper pressure mold 1 is fixed on the outer structure of the wind cap, and the lower pressure mold 2 is fixed on the inner structure of the wind cap.

[0015] In this embodiment, the upper mold 1 and the lower mold 2 are fixed by bolts through the first transverse rod 3 and the second transverse rod 7, respectively.

[0016] In this embodiment, both the upper die 1 and the lower die 2 are positioned by four cylindrical protrusions. The lower die 2 is provided with a vent hole and a demolding hole, and the vent cap has an arc-shaped structure.

[0017] In this embodiment, a threaded blind hole 10 is provided on the bottom of the second plate 8, and a fixing plate 11 is provided on the threaded blind hole 10. The fixing plate 11 is fixed to the bottom of the second plate 8 by bolts. A threaded blind hole 12 is also provided on the side wall of the second transverse rod 7.

[0018] The working principle of this utility model is as follows: the upper mold 1 includes a horizontal rod 3 and a plate 4 set at the bottom of the horizontal rod 3, and the plate 4 is provided with a conical groove 5, and the bottom of the conical groove 5 is provided with a stepped through hole. The lower mold 2 includes a horizontal rod 7 and a plate 8 set at the bottom of the horizontal rod 7, so that the upper mold 1 and the lower mold 2 cooperate with each other to ensure the coaxiality of the injection mold blank. The lower mold 2 is provided with a vent hole and a demolding hole to ensure that the gas is completely extruded during the injection molding process and reduce the formation of internal pores in the injection mold blank. The air cap is arc-shaped and a composite demolding mechanism of ejector pin and air ejector is designed. Plate 2 8 has a stepped structure and cooperates with the stepped through hole 6. The end of the tapered groove 5 is provided with a channel 9. After plate 2 8 cooperates with the tapered groove 5, it is on the same arc surface as the tapered groove 5, which ensures the needs of injection molding.

[0019] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A training shell wind cap injection mold, characterized in that: The device includes an upper die and a lower die. The upper die includes a horizontal rod and a plate at the bottom of the horizontal rod. The plate has a tapered groove and a stepped through hole at the bottom of the tapered groove. The lower die includes a horizontal rod and a plate at the bottom of the horizontal rod. The second plate has a stepped structure and cooperates with the stepped through hole. The end of the conical groove is provided with a channel. After the second plate cooperates with the conical groove, it is on the same arc surface as the conical groove.

2. The injection mold for a training shell wind cap according to claim 1, characterized in that: Both the first and second transverse rods are provided with threaded through holes. The upper pressure mold is fixed to the external structure of the wind cap, and the lower pressure mold is fixed to the internal structure of the wind cap.

3. The injection mold for a training shell wind cap according to claim 2, characterized in that: The upper and lower molds are fixed by bolts through transverse rod one and transverse rod two, respectively.

4. The injection mold for a training shell wind cap according to claim 1, characterized in that: Both the upper and lower molds are positioned by four cylindrical protrusions. The lower mold is provided with a vent hole and a mold release hole. The vent cap has an arc-shaped structure.

5. The injection mold for a training shell wind cap according to claim 1, characterized in that: The bottom of the second plate is provided with a threaded blind hole, and a fixing plate is provided on the threaded blind hole. The fixing plate is fixed to the bottom of the second plate by bolts. The side wall of the second transverse rod is also provided with a second threaded blind hole.

Images