CN105990785B - Method for manufacturing electric connector - Google Patents

Abstract

The present invention relates to a method for manufacturing an electrical connector, wherein the manufacturing steps are as follows: a plurality of terminal groups formed on a metal strip are respectively subjected to in-mold injection processing, and an insulating shell is respectively formed integrally on the outside of each terminal group. After the plurality of terminal base semi-finished products are separated from the metal strip, the plurality of terminal base semi-finished products are respectively clamped on the outside of two opposite surfaces of each grounding sheet on a grounding material strip in two opposite ways, and an insulating seat body is integrally formed on the outside of the two terminal base semi-finished products clamped on the two sides of each grounding sheet, and then an insulating seat body is integrally formed by in-mold injection processing to form a plurality of electrical connector semi-finished products. After the electrical connector semi-finished products are taken out from the grounding material strip, the metal shielding shells are respectively assembled on the outside, so that a plurality of electrical connectors are manufactured, thereby achieving the purpose of fast production speed and stable quality.

Description

Manufacturing method of electrical connector

technical field

The invention provides a manufacturing method of an electrical connector, especially a manufacturing method that can accelerate the completion of the production process of the electrical connector through an automated process. The terminal base semi-finished products are relatively clamped on the two surfaces of each ground sheet of the ground material belt, and are subjected to in-mold injection processing to achieve the purpose of forming an electrical connector with good quality.

Background technique

According to, with the advancement of electronic technology, many electronic and electrical products bring people comfort and convenience in work and life, and also lead people to rely more and more on the use of electronic and electrical products. Through the application of various electronic signals, Operation, control of the operation and execution of electronic and electrical products, and because various electronic and electrical products are continuously improved and utility models, the functions of various electronic and electrical products must also be continuously updated and replaced. The application of electronic and electrical products to control the operation and execution capabilities of electronic and electrical products, and the speed of electronic signal transmission is also constantly improving. Various transmission interfaces, electrical connectors, etc. must be used to provide electronic signal transmission speed between electronic products, and electronic signals The transmission interface is also constantly improved and innovated to improve the signal transmission interface, the type and quality of the electrical connector, and the speed of electronic signal transmission. However, there are quite a lot of forms and types of various electronic signal transmission interfaces. The size specifications of transmission interfaces and electrical connectors are also different, and the modes of transmitting electronic signals are also different. Therefore, many specifications of transmission interfaces and electrical connectors must be installed on electronic products to meet the needs of electronic products for various electronic signal transmissions. , so there must be enough space on various electronic products to be able to install various types of transmission interfaces and electrical connectors.

Commonly used electronic products, such as flash drives, portable hard drives, multimedia storage devices, multimedia audio-visual playback devices, smart phones, tablet computers or notebook computers or desktop computers, etc., are light, thin, short and small. Therefore, all kinds of electronic components used on the circuit board must cooperate with the design of volume reduction. However, the interfaces or electrical connectors used by various electronic products to transmit electronic signals are constantly being developed, improved and innovated. After that, it has a variety of different specifications. For example, in addition to the original USB2.0 specification, the Universal Serial Bus (USB) has continuously innovated and developed the USB3.0 specification, Micro USB2.0, USB3. 0) specifications, Mini Universal Serial Bus (Mini USB2.0, USB3.0) specifications and Universal Serial Bus USB3.1 Type-C specifications, etc., which can be used to cooperate with various peripheral products for electronic signals or data, etc. Transmission, and the electrical connector uses a plurality of terminals to pass through the insulating seat body, and then covers the shielding iron shell on the outside of the insulating seat body, which will lead to more cumbersome processing procedures during manufacturing, and because various parts of the electrical connector are facing The development of light, thin, short, and small design patterns will easily make processing, manufacturing, and subsequent assembly operations more difficult, and will easily cause damage to various small parts, resulting in poor quality of electrical connector products. The failure rate of products also increases, and after a period of use of the formed electrical connector, it will be worn due to the friction between the plastic tongue and the seat of the electrical connector, or due to the plastic tongue, the seat and the shield. The friction between the iron shells will also cause wear and tear, which will affect the reduction of the plugging force of the electrical connector, make it easy to loosen when plugged into each other, and cause many defects such as unstable signal transmission between the terminals of the electrical connector.

Therefore, how to solve the problems and troubles that the current electrical connectors are easy to cause damage to parts during the process due to their small size, resulting in poor quality of the electrical connectors, and the friction between the plastic parts and metal parts of the electrical connectors is easy The defects and troubles such as lower plugging force and easy loosening of the electrical connector are the directions that relevant manufacturers engaged in this industry are eager to study and improve.

Contents of the invention

Therefore, in view of the above-mentioned problems and deficiencies, the inventor collected relevant information, evaluated and considered in many ways, and based on years of experience accumulated in this industry, through continuous trial and modification, he designed this kind of device that can pass through many times. Injection Molding (Insert Molding) process, and the invention patent of the manufacturing method of electrical connectors with stable quality and good insertion and withdrawal force was born.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A method for manufacturing an electrical connector, characterized in that the steps are:

(A1) In-mold injection processing is performed on multiple sets of terminal groups formed on the metal strip, and insulating housings are integrally formed outside each set of terminal groups to form a plurality of terminal base semi-finished products;

(A2) Detaching the semi-finished products at the base of the plurality of terminals from the metal strip;

(A3) Reuse the semi-finished products of the base of the plurality of terminals to sandwich the outside of the two opposite surfaces of each ground sheet on the ground material belt in a two-to-one manner;

(A4) The outside of the two-terminal base semi-finished product clamped on both sides of each ground piece of the grounding material belt, and then molded into an insulating seat body through in-mold injection processing, and formed into a plurality of electrical connector semi-finished products;

(A5) Take out the semi-finished electrical connectors from the grounding material belt, and then assemble metal shielding shells on the outside of the semi-finished electrical connectors to form a plurality of electrical connectors.

In the manufacturing method of the electrical connector, the metal strip in the step (A1) is formed with multiple groups of terminal groups conforming to the Universal Serial Bus USB3.1 Type-C specification, and each group of terminal groups includes upper and lower terminals respectively. Relatively plural upper-row terminals and plural lower-row terminals.

In the manufacturing method of the electrical connector, one side of the plurality of upper terminals of the terminal group is provided with a butt side connected to the metal strip, and the other side is provided with a welding side extending in the horizontal direction in a suspended shape, and are respectively passed through the mold. Injection processing is used to integrally form the insulating shell near the welding side of each upper row of terminals, and form a plurality of semi-finished products at the base of the upper row of terminals.

In the manufacturing method of the electrical connector, one side of the plurality of lower row terminals of the terminal group is provided with a butt joint side connected to the metal strip, and the other side is provided with a suspended welding side that is bent and extended in the vertical direction, and respectively passed through The in-mold injection process integrally forms the insulating shell near the welding side of each lower-row terminal, and forms a plurality of lower-row terminal base semi-finished products.

In the manufacturing method of the electrical connector, in the step (A3), the grounding material strip is formed with a plurality of sheet-shaped grounding sheets, and the two sides of the grounding sheets are respectively provided with buckling parts for buckling and positioning.

In the manufacturing method of the electrical connector, in the step (A4), the outer part of the semi-finished two-terminal base part sandwiched by the two sides of the grounding strips of the grounding material strip is processed by in-mold injection to integrally form an insulating seat body, and the insulating seat body conforms to Semi-finished electrical connectors for Universal Serial Bus USB3.1 Type-C specifications.

In the manufacturing method of the electrical connector, the semi-finished electrical connector in the step (A5) is externally assembled with a shielding shell conforming to the Universal Serial Bus USB3.1 Type-C specification, and formed into an electrical connector in the form of a socket.

Compared with prior art, the beneficial effect that the present invention has is:

The manufacturing method of the electric connector, its manufacturing steps are to carry out in-mold injection processing on the multiple groups of terminal groups formed on the metal material strip, and respectively integrally form the insulating shell on the outside of each group of terminal groups, and form a plurality of terminal base semi-finished products on the After detaching from the metal material strip, use a plurality of terminal base semi-finished products to clamp on the outside of the two opposite surfaces of each grounding piece on the grounding material belt in a two-to-one manner, and the outside of the two terminal base semi-finished products clamped on both sides of each grounding piece, Then through in-mold injection processing, the insulating base body is integrally formed to form a plurality of semi-finished electrical connectors, and the semi-finished electrical connectors are taken out from the grounding material belt, and the metal shielding shells are assembled separately on the outside to form a plurality of electrical connectors, and The volume of the electrical connector can be reduced to achieve the purpose of fast production speed and stable quality.

Multiple sets of terminal groups conforming to the Universal Serial Bus USB3.1 Type-C specification are molded on the metal strip, and each set of terminal groups includes a plurality of upper row terminals and a plurality of lower row terminals facing up and down. The near-welding side of the row of terminals and the near-welding side of the plurality of lower-row terminals are respectively subjected to in-mold injection processing (Insert Molding) to integrally form the insulating shell, and the semi-finished products of the plurality of upper-row terminal bases and the plurality of lower-row terminal bases are molded separately. Semi-finished products.

A plurality of sheet-shaped grounding pieces are molded on the grounding material belt, and the two sides of each grounding piece and the connection position of the grounding material belt are respectively provided with buckle parts, and the two sides of the grounding piece can be assembled with semi-finished products at the base of the upper row of terminals. , After the semi-finished products of the base of the lower row of terminals, the Insert Molding operation is carried out on the outside of the insulating housings of the semi-finished products of the upper row of terminal bases and the semi-finished products of the lower row of terminal bases. The embedding parts are located on the two outer sides of the respective docking sides of the upper row of terminals and the lower row of terminals, so that when the electrical connector and the opposite type of electrical connector are plugged and pulled out, a good buckling and positioning effect can be formed through the embedding parts, and the The mutual friction phenomenon between the plastic insulating seat body and the metal shielding shell of the electrical connector maintains the electrical connector with good plugging force and prolongs the service life of the electrical connector.

Description of drawings

Fig. 1 is a flow chart of the present invention;

Fig. 2 is a three-dimensional exploded view of the semi-finished terminal base of the present invention;

Fig. 3 is a three-dimensional appearance view of the semi-finished terminal base of the present invention;

4 is a three-dimensional appearance view of the semi-finished electrical connector of the present invention;

5 is a perspective view of the electrical connector of the present invention;

Fig. 6 is a three-dimensional exploded view of a preferred embodiment of the present invention;

Fig. 7 is a top sectional exploded view of a preferred embodiment of the present invention;

Fig. 8 is a top sectional view of a preferred embodiment of the present invention.

Explanation of reference signs: 1-metal material strip; 11-terminal group; 111-upper row of terminals; 1111-butting side; 1112-welding side; 112-bottom row of terminals; Insulation housing; 13-semi-finished terminal base; 131-semi-finished upper terminal base; 132-semi-finished lower terminal base; 2-grounding material belt; 21-grounding piece; - semi-finished electrical connector; 3 - shielding shell; 4 - electrical connector; 5 - external electrical connector; 51 - buckling part.

Detailed ways

In order to achieve the above-mentioned purpose and effect, the technical means adopted in the present invention, its structure, and the method of implementation, etc., are hereby described in detail with respect to the preferred embodiments of the present invention. Its features and functions are as follows, so that it can be fully understood.

Please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, which are the flowchart of the present invention, the three-dimensional exploded view of the semi-finished terminal base, the three-dimensional appearance of the semi-finished terminal base, and the three-dimensional appearance of the semi-finished electrical connector. It can be clearly seen that the manufacturing method of the electrical connector of the present invention comprises the following steps:

(A1) Multiple sets of terminal groups 11 formed on the metal strip 1 are respectively subjected to in-mold injection processing (Insert Molding), and an insulating housing 12 is integrally formed outside each set of terminal groups 11 to form a plurality of terminal base semi-finished products 13 .

(A2) The plurality of terminal base semi-finished products 13 are separated from the metal strip 1 .

(A3) Reuse the plurality of terminal base semi-finished products 13 to clamp and clamp the outsides of the two opposite surfaces of each ground plate 21 (Ground Plate) on the ground material belt 2 in a two-to-one manner.

(A4) At the outer positions of the insulating shells 12 of the two-terminal base semi-finished products 13 clamped on both sides of the grounding strips 21 of the grounding material belt 2, the insulating seat can be integrally formed by in-mold injection processing (Insert Molding) The body 22 can be molded into a plurality of electrical connector semi-finished products 23 .

(A5) each electrical connector semi-finished product 23 is taken out from the grounding material belt 2, and then each electrical connector semi-finished product 23 is assembled and covered with a shielding shell 3 made of a metal material to form a plurality of electrical connectors 4 .

In addition, on the above-mentioned metal material strip 1, there are formed multiple groups of terminal groups 11 conforming to the Universal Serial Bus USB3. The lower row of terminals 112, and the plurality of upper rows of terminals 111 are provided with docking sides 1111 on one side and connected to the metal strip 1, and extend horizontally from each docking side 1111 to the other side to provide a suspended welding side 1112; One side of the lower row of terminals 112 is provided with abutting sides 1121 connected to the metal strip 1 , and then a suspending soldering side 1122 is formed extending vertically from each of the abutting sides 1121 toward the other side.

The multiple groups of terminal groups 11 located on the metal strip 1 can be integrally formed with an insulating housing 12 at the near-welding side 1112 of each upper row of terminals 111 through in-mold injection processing (Insert Molding), and a terminal base semi-finished product 13 can be molded. The plurality of upper-row terminal base semi-finished products 131; in addition, at the near-welding side 1122 of each lower-row terminal 112 of each terminal group 11, the insulating housing 12 is integrally formed by in-mold injection processing (Insert Molding), and the terminal base is formed The plurality of lower row terminal base semi-finished products 132 of the semi-finished product 13 can use each upper row terminal base semi-finished product 131 and each lower row terminal base semi-finished product 132 to form a terminal base semi-finished product 13 in an upper and lower relative manner; The upper terminal base semi-finished product 131 and the lower terminal base semi-finished product 132 of the insulating shell 12 are integrally molded by insert molding, and are clamped on the outside of the two surfaces of each ground sheet 21 of the ground material belt 2 in an upper and lower relative manner, forming a The terminal base semi-finished product 13 is coated on the outside of the grounding plate 21, and then in-mold injection processing (Insert Molding) can be performed, and the insulating seat body 22 is integrally formed outside the two opposite insulating shells 12 of the terminal base semi-finished product 13; During the production and processing process, the metal material strip 1 and the grounding material strip 2 can be subjected to several times of in-mold injection processing (Insert Molding) operations, so that the insulating shell 12 is integrally formed on the side near the welding of each terminal group 11 1112, 1122, the insulating seat body 22 is integrally formed on the outside of the terminal base semi-finished product 13, and the insulating shell 12 and the insulating seat body 22 are integrally formed on the outside of the terminal group 11, that is, the power supply connector 4 and the internal terminal group 11 are both With good structural strength and stable quality, it is not easy to be affected by external force and wear, and through the automatic processing process, after multiple injection molding operations (Insert Molding), it can also strengthen the external integrally formed insulating shell of the terminal group 11 12. The structural strength of the insulating seat 22 is not easy to separate or fall off, and can simplify the cumbersome steps and assembly process of the electrical connector 4, so that the production process can be accelerated and the volume of the electrical connector 4 can be effectively reduced. And it meets the light, thin, short, and small design concept appeals of electronic products, and at the same time can improve the qualification rate of electrical connector 4 products.

And above-mentioned grounding material band 2, is formed with plural lamellar grounding sheet 21 (Ground Plate), and on the two sides of each grounding sheet 21 and grounding material band 2 connection positions, be provided with recessed buckling part 211 respectively , and after clamping the two terminal base semi-finished products 13 on the outside of each grounding piece 21, the interlocking parts 211 on both sides of each grounding piece 21 are respectively located at the outer sides of the plurality of docking sides 1111 and 1121 of the terminal group 11, and each grounding piece 21 That is, the inside of the two-terminal base semi-finished product 13 is covered, and after in-mold injection processing (Insert Molding) is performed on the outside of each two-terminal base semi-finished product 13, it can be integrally formed into a plurality of electrical connector semi-finished products 23, which can be electrically connected to each other. The semi-finished product 23 is externally assembled with a metal shielding shell 3 conforming to the Universal Serial Bus USB3.1 Type-C specification, and can be molded into a plurality of socket-type electrical connectors 4 conforming to the Universal Serial Bus USB3.1 Type-C specification , the manufacturing process is completed quickly, and has stable structural strength and quality, then when the plurality of butt joint sides 1111, 1121 of the terminal group 11 of each electrical connector 4 are plugged and pulled out with the relative form preset external electrical connector 5, then It can ensure that the grounding piece 21 located inside each electrical connector 4 will not be lifted or warped due to external force impact, so that each electrical connector 4 has better structural strength.

Please refer to Figures 5, 6, 7, and 8, which are the three-dimensional appearance view of the electrical connector of the present invention, the three-dimensional exploded view of the preferred embodiment, the top-view sectional exploded view of the preferred embodiment, and the top view of the preferred embodiment As can be clearly seen from the sectional view shown in the figure, the electrical connector 4 of the present invention can be used for plugging in the preset external electrical connector 5 of the opposite form during practical application, that is, it can be connected through the electrical connector 4. The buckling parts 211 on both sides of the internal grounding piece 21 of the connector 4 are used for the buckling parts 51 of the opposite form provided by the external electrical connector 5 to be buckled and docked with each other, thereby improving the connection between the electrical connector 4 and the preset external electrical connector 5. The function of stabilizing plugging and connection, and making the signal transmission between the internal terminal group 11 more stable, and the insulating seat body 22 and shielding shell made of plastic material due to repeated plugging and unplugging between the electrical connector 4 and the preset external electrical connector 5 The friction loss formed by the body 3 is reduced, and its relative insertion and withdrawal force will not be reduced. The buckle positioning can be assisted by the embedded parts 211 on both sides of the ground plate 21, and the power supply connector 4 and the preset external electrical connector 5 are kept in good condition. The insertion and withdrawal force is high, the effect of forming a stable butt joint, and can effectively prolong the service life of the electrical connector 4 .

Therefore, the above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. The manufacturing method of the electrical connector of the present invention utilizes the exterior of the plurality of terminal groups 11 on the metal strip 1 for in-mold injection. Processing operation, after the insulating shell 12 is integrally formed, the terminal base semi-finished product 13 is removed from the metal material strip 1, and then the two terminal base semi-finished products 13 are relatively clamped on the two surfaces of the grounding piece 21 of the grounding material strip 2, and the mold is penetrated again The inner injection molding process forms the insulating seat body 22, and integrally forms the electrical connector semi-finished product 23, then after assembling the shielding shell 3 outside the electrical connector semi-finished product 23, it can be formed to meet the miniature universal serial bus specification USB3.1 Type- The C-shaped electrical connector 4 can achieve the purpose of fast manufacturing process, good structural strength, small size and good plugging force of the electrical connector 4. The insulating seat body 22 of the power supply connector 4 can hold the grounding piece 21 firmly inside. , when the electrical connector 4 and the preset external electrical connector 5 are plugged and unplugged, the grounding plate 21 will not be lifted or warped, and the formed electrical connector 4 is small in size and can meet the requirements of light, thin and short electronic products. , small design appeal, so all structures and devices that can achieve the aforementioned effects should be covered by the present invention. Such simple modifications and equivalent structural changes should be included in the patent scope of the present invention in the same way. Chen Ming.

Therefore, the present invention is mainly designed for the manufacturing method of the electrical connector, utilizes the outside of each terminal group of the metal strip to carry out in-mold injection processing, and after integrally forming the insulating shell, it becomes a terminal base semi-finished product, and then clamps the two terminal base semi-finished products relative to each other. It is held on the outside of each ground piece of the grounding material belt, and then in-mold injection processing is carried out again. After the integrally formed insulating seat body is formed, it becomes a semi-finished electrical connector, and the shielding shell is assembled outside the semi-finished electrical connector, which is formed into a universal series. The electrical connector of USB3.1 Type-C specification of the line bus, and the electrical connector can achieve fast manufacturing process, small size, good structural strength and good plugging force as the main protection focus. The power supply connector is injected into the mold many times. The processing operation forms a stable structural strength, and there is a buckle part on the ground plate for stable docking with the preset external electrical connector. This is the advantage that the electrical connector can still maintain good plugging force after repeated plugging and unplugging. And can prolong the service life of the electrical connector.

The above description is only illustrative of the present invention, rather than restrictive. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims, but All will fall within the protection scope of the present invention.

Claims (7)

1. a kind of manufacturing method of electric connector, which is characterized in that its step is：

(A1) molding multigroup terminal group carries out projecting processing in mould respectively on metal material belt, and outside each group terminal group respectively Insulation shell is integrally formed, to be molded plural terminals base portion semi-finished product；

(A2) plural terminals base portion semi-finished product are detached from metal material belt；

(A3) recycling plural terminals base portion semi-finished product, clamping is in each ground strip on earthing material band respectively with two relative modes Two opposite surface externals；

(A4) outside the two-terminal base portion semi-finished product of the two side clamping of each ground strip of earthing material band, then by projecting processing in mould Insulating base frame is integrally formed, and is shaped to plural electric connector semi-finished product；

(A5) each electric connector semi-finished product are taken out from earthing material band, then the assembling gold respectively outside each electric connector semi-finished product Belong to material shield shell, that is, plural electric connector is made.

2. the manufacturing method of electric connector according to claim 1, it is characterised in that：On the metal material belt of the step (A1) into Type has the multigroup terminal group for meeting general-purpose serial bus USB 3.1Type-C specifications, and each group terminal group respectively includes going to upper and lower The lower row's terminal of terminal, plural number is arranged on opposite plural number.

3. the manufacturing method of electric connector according to claim 2, it is characterised in that：Terminal one is arranged on the plural number of the terminal group Side is equipped with the docking side for being connected to metal material belt, opposite side is equipped with the weld side that hanging shape extends in the horizontal direction, and leads to respectively It crosses in mould to project to process at the close weld side for arranging terminal on each and is integrally formed insulation shell, and be molded row's terminal base on plural number Portion's semi-finished product.

4. the manufacturing method of electric connector according to claim 2, it is characterised in that：Terminal one is arranged under the plural number of the terminal group Side is equipped with the docking side for being connected to metal material belt, opposite side is equipped with hanging shape towards the weld side of vertical direction bending extension, and point Insulation shell is not integrally formed at the nearly weld side of each lower row's terminal by projecting processing in mould, and is molded the lower row's terminal of plural number Base portion semi-finished product.

5. the manufacturing method of electric connector according to claim 1, it is characterised in that：On the earthing material band of the step (A3) The laminar ground strip of plural number is formed, and the buckle portion positioned for clasp is respectively equipped in two side of ground strip.

6. the manufacturing method of electric connector according to claim 1, it is characterised in that：The earthing material band of the step (A4) Outside the two-terminal base portion semi-finished product of each two side clamping of ground strip, then by projecting processing integrated molding insulating base frame in mould, and Insulating base frame meets the electric connector semi-finished product of general-purpose serial bus USB 3.1Type-C specifications.

7. the manufacturing method of electric connector according to claim 1, it is characterised in that：The electric connector of the step (A5) half into Meet the shield shell of general-purpose serial bus USB 3.1Type-C specifications outside product for assembling, and be shaped to being electrically connected for socket type Connect device.