Injection molding method of PWM (Pulse Width Modulation) controller shell body and metal pins

An injection molding and controller technology, applied in household components, household appliances, other household appliances, etc., can solve the problems of increasing the process requirements of injection molding and processing PCB boards, changing the position of metal pins, and complicated installation processes, and shortening the injection molding process. time, improved accuracy, simplified machining process effect

Inactive Publication Date: 2010-08-04
SHANGHAI RIYONG JEA GATE ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the installation process of multiple metal pins in the mold is relatively complicated, and the installation process is also prone to problems
After the mold is released, due to the cooling deformation of the shell, the position between the metal pins may change and the accuracy will be reduced
These shortcomings will increase the process requirements for injection molding and processing PCB boards

Method used

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  • Injection molding method of PWM (Pulse Width Modulation) controller shell body and metal pins
  • Injection molding method of PWM (Pulse Width Modulation) controller shell body and metal pins
  • Injection molding method of PWM (Pulse Width Modulation) controller shell body and metal pins

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Embodiment Construction

[0013] The injection molding method of the PWM controller housing and the metal pins of the present invention is that first, a plurality of metal pins that need to be separated after molding are integrally designed, and are connected to each other by a plurality of connecting blocks and punched into a shape such as figure 1 The monolithic metal part 1 shown. The plurality of metal pins include a first pin 11 , a second pin 12 , a third pin 13 , a fourth pin 14 , a fifth pin 15 and a sixth pin 16 . The plurality of connection blocks include a first connection block 21 , a second connection block 22 , a third connection block 23 , a fourth connection block 24 , a fifth connection block 25 , a sixth connection block 26 and a seventh connection block 27 . Wherein, the first connecting block 21 is connected between the first pin 11 and the second pin 12, the second connecting block 22 is connected between the second pin 12 and the third pin 13, and the third connecting block 23 is ...

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Abstract

The invention provides an injection molding method of a PWM (Pulse Width Modulation) controller shell body and metal pins, which comprises the following steps of: A, integrating a plurality of molded metal pins to be separated; mutually connecting and punching an integral metal piece by a plurality of connecting blocks; B, positioning and putting the punched integral metal piece into a mould for molding the PWM controller shell body for injection molding; and C, removing the connecting blocks for connecting the metal pins for separating the metal pins. Compared with the prior art of the separation injection of the metal pins, the injection molding method of the PWM controller shell body and the metal pins can reduce the positioning and holding quantity of the pins, simplify the installation of the pins, enhance precision, reduce technological difficulty, shorten injection time, simplify subsequent processing technology, and reduce the total cost of products.

Description

technical field [0001] The invention relates to a manufacturing method of an electrical component, in particular to an injection molding method of a PWM controller housing and metal pins. Background technique [0002] In the design of the PWM controller, the power line part generally needs to pass a relatively large current, so if the power line is arranged on the PCB board, a larger line width is required, which will lead to a larger design volume of the control board and increase Wiring is difficult; at the same time, due to the use of PWM pulse width modulation technology, the electromagnetic interference generated by the power line will also affect the normal operation of the electronic devices on the entire board. Therefore, it is usually necessary to separate the power line from the PCB board, and one of the separation methods is to use metal pins to bridge the PCB board to realize the layout of the power line. The PWM controller is a single-input and double-output st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29L31/34
Inventor 马宝发
Owner SHANGHAI RIYONG JEA GATE ELECTRIC
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