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Bottom case of electric energy meter and injection molding process of the bottom case

An electric energy meter and injection molding technology, which is applied in the field of electric energy meters, can solve the problems that the box cover cannot have good thermal conductivity, affect the normal use of the electric energy meter, and the heat cannot be dissipated in time, so as to reduce the surface temperature, facilitate production, and reduce failures The effect of the probability of

Active Publication Date: 2021-11-02
NINGBO SANXING MEDICAL & ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electric energy meter casing is often made of polycarbonate material, which has insulation properties, but because the devices inside the electric energy meter box generate a lot of heat during work, it is easy to cause the temperature inside the meter box to rise, thereby If the heat in the meter box is not dissipated in time, it will affect the normal use of the electric energy meter. The box cover produced by this processing technology can not play a good thermal conductivity, so further improvement is needed to produce a kind with good thermal conductivity. watch box

Method used

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  • Bottom case of electric energy meter and injection molding process of the bottom case
  • Bottom case of electric energy meter and injection molding process of the bottom case
  • Bottom case of electric energy meter and injection molding process of the bottom case

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as Figure 1~4 As shown, a bottom case of an electric energy meter includes a bottom case body 1. A stamped copper plate 2 is installed on the bottom of the bottom case body 1. The copper plate 2 includes a horizontal portion 21 and a bending portion 22 perpendicular to the horizontal portion 21. The horizontal portion 21 is installed on the base body 1 , and the bent portion 22 is provided on the inner wall of the bottom shell body 1 .

[0063] The horizontal part 21 of the copper plate 2 is injection-molded with a polycarbonate plate 4 for covering the copper plate 2 so that the copper plate 2 is not exposed, and a polycarbonate sheet for completely covering the bent portion 22 is injection-molded outside the bent portion 22 3. Wherein, the polycarbonate plate 4 and the polycarbonate sheet 3 are formed by injection molding of polycarbonate and glass fiber with a content of 5%-15%.

[0064] A plurality of positioning holes 23 are provided on the horizontal porti...

Embodiment 2

[0107] Different from Embodiment 1, the injection molding process of the above electric energy meter bottom case includes the following steps:

[0108] Step 1, blanking and forming: stamping and forming the copper sheet to form a copper plate, the copper plate includes a horizontal portion and a bending portion perpendicular to the horizontal portion;

[0109] Step 2, the first injection molding: perform the first injection molding on the bending part of the copper plate, so that the bending part of the copper plate is glued with a polycarbonate sheet;

[0110] Among them, the specific process of the first injection molding is:

[0111] (1) Raw material pretreatment: use an oven to bake 85% polycarbonate and 15% glass fiber raw materials, the baking temperature is 115 ° C, and the baking time is 5 hours;

[0112] (2) Pretreatment: Set the temperature of barrel 1 to 4 of the injection molding machine to 260°C, 250°C, 240°C, 225°C, and the temperature of the nozzle to 255°C; A...

Embodiment 3

[0149] Different from Embodiment 1, the injection molding process of the above electric energy meter bottom case includes the following steps:

[0150] Step 1, blanking and forming: stamping and forming the copper sheet to form a copper plate, the copper plate includes a horizontal portion and a bending portion perpendicular to the horizontal portion;

[0151] Step 2, the first injection molding: perform the first injection molding on the bending part of the copper plate, so that the bending part of the copper plate is glued with a polycarbonate sheet;

[0152] The specific process of the first injection molding is:

[0153] (1) Raw material pretreatment: use an oven to bake 90% polycarbonate and 10% glass fiber raw materials, the baking temperature is 110 ° C, and the baking time is 4 hours;

[0154] (2) Pretreatment: Set the temperature of barrel 1 to 4 of the injection molding machine to 255°C, 245°C, 230°C, and 220°C respectively, and set the temperature of the nozzle to ...

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Abstract

The invention relates to a bottom case of an electric energy meter, comprising a bottom case body (1), characterized in that a stamped copper plate (2) is installed on the bottom of the bottom case body (1), and the copper plate (2) The other side is injection-molded with a polycarbonate plate (4) for covering the copper plate (2) so that the copper plate (2) is not exposed. Also disclosed is an injection molding process for the electric energy meter bottom case. Compared with the prior art, the present invention has the advantages of: by embedding the copper plate in the injection molding of the bottom case, and injecting polycarbonate on the other side of the copper plate, the thermal conductivity can be increased, and the surface temperature of the electric energy meter can be greatly reduced, thereby Reduce the probability of failure of the electric energy meter and improve the reliability of the electric energy meter.

Description

technical field [0001] The invention relates to the field of electric energy meters, in particular to an electric energy meter bottom case and an injection molding process for the bottom case. Background technique [0002] With the rapid development of my country's economy, the demand for electricity in all walks of life is increasing, and the use of electric energy meters is becoming more and more extensive. Since the electric energy meter needs to be in working condition all the time, especially when the weather is hot, the temperature inside the electric energy meter will rise. High, in order to prevent the temperature in the electric energy meter from being too high and affecting the normal use of the electric energy meter, the temperature rise in the electric energy meter is a difficult problem that the industry needs to solve. [0003] There is a Chinese invention patent with the application number CN201510142600.6 (the application publication number is CN106153998A) di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R11/04G01R3/00B29C45/14B29C45/76B29C45/78B29B13/06B29K69/00
CPCB29B13/065B29C45/14B29C45/76B29C45/78B29C2045/0096B29C2945/76498B29C2945/76531B29C2945/76561B29C2945/76575B29C2945/76598B29C2945/76668B29C2945/76688B29C2945/76732B29C2945/76806B29C2945/76859B29C2945/76862B29K2069/00B29L2031/752G01R3/00G01R11/04
Inventor 赖济民毛犇胡钱波魏章波金海波喻臻翔
Owner NINGBO SANXING MEDICAL & ELECTRIC CO LTD
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