High-precision double-station electric energy meter shell injection mold

Abstract

The utility model discloses a high-precision double-station injection mold for an electric energy meter shell. According to the technical scheme, the electric energy meter shell mold comprises an upper mold plate, a lower mold plate, two female mold cores arranged in the upper mold plate and two male mold cores arranged in the lower mold plate, and an electric energy meter shell cavity is formed between the female mold cores and the male mold cores. A hot runner system used for enabling liquid plastic to flow into the electric energy meter shell cavity is arranged on the upper mold plate, and movable mold cores matched with the male mold cores are arranged on the two sides of the lower mold plate through sliding grooves. The movable mold core comprises a mounting bottom plate, a positioning plate integrally formed at the upper end of the mounting bottom plate and a conical positioning part integrally formed at the front end of the positioning plate, a positioning edge is arranged at the front end of the conical positioning part, and a cavity shaft and a cavity groove are correspondingly arranged beside the positioning edge; a first positioning groove matched with the positioning plate in a positioning manner and a second positioning groove matched with the conical positioning part in a positioning manner are formed in two sides of the female mold core; and a third positioning groove matched with the positioning edge in a positioning manner is formed in the side surface of the male mold core.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to an injection mould for an electric energy meter shell. Background Art

[0002] The traditional injection mold used for the electric energy meter housing 29 includes: an upper mold plate, a lower mold plate, a female mold core arranged in the upper mold plate, and two male mold cores arranged in the lower mold plate. The electric energy meter housing cavity is formed between the female mold core and the male mold core. The upper mold plate is provided with a hot runner system for flowing liquid plastic into the electric energy meter housing cavity. In order to improve production efficiency, double female mold cores and double male mold cores are usually arranged in the mold plate. However, there is a disadvantage that: since the shaft hole 30 and the positioning protrusion 31 are provided at the tail of the electric meter housing, when a double-station injection mold is used, the traditional mold core structure has poor positioning accuracy for the shaft hole, which can easily cause the flip cover to fail to open and close normally. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-precision double-station electric energy meter shell injection mold.

[0004] To solve the above problems, the technical solution adopted by the utility model includes: an upper template, a lower template, two female mold cores arranged in the upper template and two male mold cores arranged in the lower template, a cavity of an electric energy meter shell is formed between the female mold core and the male mold core, and a hot runner system for flowing liquid plastic into the cavity of the electric energy meter shell is provided on the upper template, characterized in that: movable mold cores cooperating with the male mold cores are provided on both sides of the lower template through slide grooves, the movable mold cores include a mounting base plate, a positioning plate integrally formed on the upper end of the mounting base plate and a conical positioning portion integrally formed at the front end of the positioning plate, a positioning edge is provided at the front end of the conical positioning portion, and a cavity axis and a cavity groove are provided corresponding to the positioning edge, a first positioning groove cooperating with the positioning plate and a second positioning groove cooperating with the conical positioning portion are provided on both sides of the female mold core, and a third positioning groove cooperating with the positioning edge is provided on the side of the male mold core.

[0005] The high-precision double-station electric energy meter housing injection mold is characterized in that a first positioning step is provided on one side of the conical positioning portion, and a second positioning step that cooperates with the first positioning step is provided on the female mold core.

[0006] The high-precision double-station electric energy meter housing injection mold is characterized in that a fourth positioning groove is provided below the front end of the conical positioning portion corresponding to the positioning edge, and a third positioning step is provided on the side of the male mold core to cooperate with the fourth positioning groove.

[0007] The high-precision double-station electric energy meter housing injection mold is characterized in that fixed edges are provided on both sides of the installation base plate, and pressure plates fixed to the fixed edges are provided on both sides of the slide groove of the lower template.

[0008] The high-precision double-station electric energy meter housing injection mold is characterized in that the lower template is installed with the male mold core through a mold core positioning frame, and both sides of the mold core positioning frame are provided with fifth positioning grooves that are positioned and matched with the mounting base plate of the movable mold core.

[0009] The high-precision double-station electric energy meter housing injection mold is characterized in that a positioning pin is provided in the fifth positioning groove of the mold core positioning frame, and a positioning pin opening that cooperates with the positioning pin is provided at the front end of the mounting base plate of the movable mold core.

[0010] The high-precision double-station electric energy meter housing injection mold is characterized in that mold opening frames are provided on both sides of the upper mold plate.

[0011] The utility model has the following advantages for a high-precision double-station electric energy meter housing injection mold: by setting a multi-level positioning structure for a movable mold core, high-precision injection molding of the shaft hole and the positioning protrusion of the electric energy meter housing can be achieved.

[0012] The utility model is further described below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a high-precision double-station electric energy meter housing injection mold of the utility model;

[0014] Figure 2 This is a structural schematic diagram of a high-precision double-station electric energy meter housing injection mold of the utility model;

[0015] Figure 3 It is a schematic diagram of the assembly between the male mold core and the lower mold plate of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the movable mold core of the utility model;

[0017] Figure 5 It is a schematic diagram of the assembly between the female mold core and the upper mold plate of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the male mold core of the utility model;

[0019] Figure 7 It is a structural schematic diagram of the mold core positioning frame of the utility model;

[0020] Figure 8 It is a structural schematic diagram of the electric energy meter housing of the utility model. DETAILED DESCRIPTION

[0021] Reference Figure 1-8 As shown, the high-precision double-station electric energy meter housing injection mold of the utility model comprises an upper mold plate 1, a lower mold plate 2, two female mold cores 3 arranged in the upper mold plate 1, and two male mold cores 4 arranged in the lower mold plate 2. The electric energy meter housing cavity 5 is formed between the female mold core 3 and the male mold core 4. The upper mold plate 1 is provided with a hot runner system 6 for flowing liquid plastic into the electric energy meter housing cavity 5, and the hot runner system 6 is composed of an injection nozzle, a heating element, etc., which is a well-known technology. The lower mold plate 2 is provided with a movable mold core 8 that cooperates with the male mold core 4 through the slide groove 7 on both sides. The movable mold core 8 includes a mounting base plate 9, a positioning plate 10 integrally formed at the upper end of the mounting base plate 9, and a conical positioning portion 11 integrally formed at the front end of the positioning plate 10. The front end of the conical positioning portion 11 is provided with a positioning edge 12, and a cavity axis 13 and a cavity groove 14 are provided corresponding to the positioning edge 12. The female mold core 3 is provided with a first positioning groove 15 that cooperates with the positioning plate 10 and a second positioning groove 16 that cooperates with the conical positioning portion 11 on both sides. The side of the male mold core 4 is provided with a third positioning groove 17 that cooperates with the positioning edge 12. When the upper mold plate 1 and the lower mold plate 2 are molded, the positioning structures match each other to achieve accurate positioning of the movable mold core 8.

[0022] Preferably, a first positioning step 18 is provided on one side of the tapered positioning portion 11, and a second positioning step 19 is provided on the female mold core 3 to be positioned and matched with the first positioning step 18. When the upper mold plate 1 and the lower mold plate 2 are molded together, the first positioning step 18 is matched with the second positioning step 18 to further improve the accuracy.

[0023] Preferably, a fourth positioning groove 20 is provided at the front end of the tapered positioning portion 11 corresponding to the lower portion of the positioning edge 12, and a third positioning step 21 is provided on the side of the male mold core 4 to be positioned and matched with the fourth positioning groove 20. When the upper mold plate 1 and the lower mold plate 2 are molded together, the third positioning step 21 is matched with the fourth positioning groove 20 to further improve the accuracy.

[0024] Preferably, the mounting base plate 9 is provided with fixed edges 22 on both sides, and the slide groove 7 of the lower template 2 is provided with pressing plates 23 fixed to the fixed edges 22 on both sides. The mounting base plate 9 is fixed by screwing a screw into the pressing plate 23.

[0025] Preferably, the lower mold plate 2 is mounted with the male mold core 4 via a mold core positioning frame 24, and both sides of the mold core positioning frame 24 are provided with fifth positioning grooves 25 for positioning and matching with the mounting base plate 9 of the movable mold core 8, so as to further improve the mounting accuracy of the male mold core 4.

[0026] Preferably, a positioning pin 26 is provided in the fifth positioning groove 25 of the mold core positioning frame 24, and a positioning pin opening 27 is provided at the front end of the mounting base plate 9 of the movable mold core 8 to be positioned and matched with the positioning pin 26. When the upper mold plate 1 and the lower mold plate 2 are molded together, the positioning pin 26 is inserted into the positioning pin opening 27 to further improve the installation accuracy of the movable mold core 8.

[0027] Preferably, mold opening frames 28 are provided on both sides of the upper mold plate 1 to facilitate the mold opening of the upper mold plate 1 .

[0028] The above does not impose any form of limitation on the present invention. Although the present invention has been disclosed as a preferred implementation case as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the equivalent implementation cases of equivalent changes by using the structure and technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-precision double-station electric energy meter housing injection mold, comprising an upper mold plate (1), a lower mold plate (2), two female mold cores (3) arranged in the upper mold plate (1), and two male mold cores (4) arranged in the lower mold plate (2), wherein an electric energy meter housing cavity (5) is formed between the female mold cores (3) and the male mold cores (4), and a hot runner system (6) for flowing liquid plastic into the electric energy meter housing cavity (5) is provided on the upper mold plate (1), characterized in that: The lower mold plate (2) is provided with movable mold cores (8) cooperating with the male mold core (4) on both sides through sliding grooves (7), the movable mold core (8) comprising a mounting base plate (9), a positioning plate (10) integrally formed at the upper end of the mounting base plate (9), and a conical positioning portion (11) integrally formed at the front end of the positioning plate (10), the front end of the conical positioning portion (11) is provided with a positioning edge (12), and a cavity axis (13) and a cavity groove (14) are provided corresponding to the positioning edge (12), the female mold core (3) is provided with a first positioning groove (15) cooperating with the positioning plate (10) and a second positioning groove (16) cooperating with the conical positioning portion (11) on both sides, and the side of the male mold core (4) is provided with a third positioning groove (17) cooperating with the positioning edge (12).

2. The high-precision double-station electric energy meter housing injection mold according to claim 1 is characterized in that: A first positioning step (18) is provided on one side of the conical positioning portion (11), and a second positioning step (19) which is positioned and matched with the first positioning step (18) is provided on the female mold core (3).

3. The high-precision double-station electric energy meter housing injection mold according to claim 1 is characterized in that: A fourth positioning groove (20) is provided at the front end of the conical positioning portion (11) and corresponds to the lower portion of the positioning edge (12), and a third positioning step (21) is provided on the side surface of the male mold core (4) and is positioned and matched with the fourth positioning groove (20).

4. The high-precision double-station electric energy meter housing injection mold according to claim 1 is characterized in that: Fixed edges (22) are provided on both sides of the installation base plate (9), and pressure plates (23) fixed to the fixed edges (22) are provided on both sides of the slide groove (7) of the lower template (2).

5. The high-precision double-station electric energy meter housing injection mold according to claim 1 is characterized in that: The lower mold plate (2) is mounted on the male mold core (4) via a mold core positioning frame (24), and both sides of the mold core positioning frame (24) are provided with fifth positioning grooves (25) for positioning and matching with the mounting base plate (9) of the movable mold core (8).

6. The high-precision double-station electric energy meter housing injection mold according to claim 5, characterized in that: A positioning pin (26) is provided in the fifth positioning groove (25) of the mold core positioning frame (24), and a positioning pin opening (27) for positioning and cooperating with the positioning pin (26) is provided at the front end of the mounting base plate (9) of the movable mold core (8).

7. The high-precision double-station electric energy meter housing injection mold according to claim 1, characterized in that: Opening mold frames (28) are provided on both sides of the upper mold plate (1).

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