Connector male head terminal anti-gluing injection molding method and connector

Abstract

The invention discloses a connector male head terminal gluing prevention injection molding method and a connector, the connector male head terminal comprises a fixed seat, an injection molding structure arranged in the fixed seat and a plurality of male head terminals, the plurality of male head terminals are arranged in the injection molding structure, the method comprises the following steps: first injection molding: carrying out injection molding on the injection molding structures of the plurality of male head terminals; in the second injection molding process, upward pressure is applied to the injection molding structure, so that the male head terminals are tightly attached to the mold, meanwhile, the male head terminals are upwards extruded, and the R edges, caused by stamping, of the male head terminals are filled and leveled up. According to the invention, the rubber coating of the male head terminal of the connector in the injection molding process can be reduced, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, and in particular to a method for preventing over-glue injection molding of a connector male terminal and a connector. Background Art

[0002] A connector, also known as a connector, includes a male end and a female end. The male end and the female end can transmit information or current after contact.

[0003] At present, the male end of the connector is usually made by a one-time injection molding process. Since the edge of the male terminal will form an R edge during the stamping process, and the current injection molding process has a certain degree of gap or clearance between the top of the male terminal and the mold during injection molding, the plastic liquid will also flow along the R edge into the top of the male terminal during the injection molding process, resulting in excessive rubber coating. After the male terminal is formed, the product quality is affected due to excessive rubber coating. Summary of the invention

[0004] The main purpose of the present invention is to provide a method for preventing over-glue injection molding of a connector male terminal and a connector, aiming to reduce glue encapsulation of the connector male terminal during the injection molding process and improve product quality.

[0005] To achieve the above object, the present invention provides a method for preventing over-glue injection molding of a connector male terminal, wherein the connector male terminal comprises a fixing seat, an injection molding structure disposed in the fixing seat, and a plurality of male terminals, wherein the plurality of male terminals are arranged in the injection molding structure, and the method comprises the following steps:

[0006] Step S10, first injection molding: injection molding the injection molding structure of the plurality of male terminals;

[0007] Step S20, second injection molding: During the second injection molding process, upward pressure is applied to the injection molding structure so that the male terminals are close to the mold, and at the same time, the male terminals are squeezed upward to fill the R edges of the male terminals caused by stamping.

[0008] A further technical solution of the present invention is that before step S10, the step further includes: stamping a male terminal.

[0009] A further technical solution of the present invention is that before step S10, the step further includes: stamping a male terminal, wherein during the stamping process of the male terminal, the R edges are formed on both sides of the male terminal.

[0010] A further technical solution of the present invention is that in the step S20, when the plurality of male terminals are extruded upward to fill the R edges of the plurality of male terminals caused by stamping, an extrusion groove is formed at the bottom stress-bearing position of the plurality of male terminals, and during injection molding, the extrusion groove forms a gap into which the plastic liquid flows, and the step S20 also includes that after the plurality of male terminals are extruded upward, the plastic liquid flows into the gap, and the plurality of male terminals are extruded upward.

[0011] To achieve the above object, the present invention further provides a connector, wherein the male terminal of the connector is manufactured by the above-mentioned injection molding method for preventing over-glueing of the male terminal of the connector.

[0012] The beneficial effects of the method for preventing over-glue injection molding of the connector male terminal and the connector of the present invention are:

[0013] The present invention adopts a secondary injection molding process. During the first injection molding, the plurality of male terminals and the injection molding structure are injection molded, so that during the second injection molding, the injection molding structure can give pressure to the plurality of male terminals to make them close to the mold, and squeeze the plurality of male terminals upward during the second injection molding to fill the R edges of the plurality of male terminals caused by stamping, thereby reducing the glue encapsulation of the connector male terminals during the injection molding process and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 It is a schematic flow chart of a preferred embodiment of a method for preventing over-glue injection molding of a connector male terminal of the present invention;

[0016] Figure 2 It is a schematic diagram of the exploded structure of the connector male terminal in the method for preventing over-glue injection molding of the connector male terminal of the present invention;

[0017] Figure 3 It is a schematic diagram of the overall structure of the male connector terminal in the method for preventing over-glue injection molding of the male connector terminal of the present invention;

[0018] Figure 4 It is a schematic diagram of the molding of the injection molding structure and the male terminal;

[0019] Figure 5 It is a schematic diagram of the structure of the male terminal;

[0020] Figure 6 This is a schematic diagram of the R edge formed during the stamping of the male terminal;

[0021] Figure 7 It is a structural schematic diagram of the extrusion tank.

[0022] Description of Figure Numbers:

[0023] Fixed seat 10; injection molding structure 20; male terminal 30; R edge 40; extrusion groove 50.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The present invention takes into account that the male end of the existing connector is easily affected by excessive plastic coating during a one-time injection molding process, so the present invention proposes a solution.

[0027] Specifically, the present invention proposes a method for injection molding a connector male terminal to prevent over-molding. The present invention mainly solves the technical problems existing in the prior art through a secondary injection molding process.

[0028] Please refer to Figures 2 to 7 In the method for preventing over-glue injection molding of the connector male terminal of the present invention, the connector male terminal includes a fixing seat 10, an injection molding structure 20 disposed in the fixing seat 10, and a plurality of male terminals 30, wherein the plurality of male terminals 30 are arranged in the injection molding structure 20, please refer to Figure 1 , the method comprises the following steps:

[0029] Step S10, first injection molding: injection molding the plurality of male terminals 30 and the injection molding structure 20.

[0030] In this embodiment, a plurality of male terminals 30 and the injection molding structure 20 are injection molded by the first injection molding. The injection molding structure 20 can fix the male terminals 30 so as to apply pressure to the male terminals 30 during the second injection molding to reduce the glue encapsulation.

[0031] Step S20, second injection molding: the fixing seat, the injection molding structure in step S10, and the male terminal are injection molded. During the second injection molding process, an upward pressure is applied to the injection molding structure 20 so that the plurality of male terminals 30 are close to the mold, and at the same time, the plurality of male terminals 30 are squeezed upward to fill the plurality of male terminals 30 caused by stamping. Figure 4 The R edge 40 is shown.

[0032] The present invention further comprises, before step S10 , punching a male terminal, wherein during the punching process of the male terminal, the R edges 40 are formed on both sides of the male terminal.

[0033] In this embodiment, in the step S20, when the plurality of male terminals are pressed upward to fill the R edge 40 formed by the stamping of the edges of the plurality of male terminals, the bottom force-bearing parts of the plurality of male terminals are formed as follows: Figure 5 The extrusion groove 50 shown forms a gap into which the plastic liquid flows during injection molding, and the step S20 further includes, after the plurality of male terminals are extruded upward, the plastic liquid flows into the gap and extrudes the plurality of male terminals upward. This allows the plurality of male terminals to be further attached to the mold, thereby reducing the plastic wrapping.

[0034] It should be noted that the extrusion groove 50 can also play a role in fixing the offset of the male terminal during the first injection molding. That is to say, the extrusion groove 50 has two functions, which are specifically reflected in the following two aspects:

[0035] 1. Punching can make the R edge become a right angle to prevent plastic intrusion;

[0036] 2. The resin enters through the extrusion groove 50, which can fix the resin during the first injection molding to prevent it from swinging left and right.

[0037] This embodiment takes into account that during the current injection molding process, there is a certain degree of gap or clearance between the top of the male terminal 30 and the mold, and during the stamping process of the male terminal 30, the two sides of its top will form R edges 40 due to stamping, resulting in the plastic liquid flowing into the top of the male terminal 30 along the R edges 40 during the injection molding process, resulting in excessive rubber coating. Therefore, this embodiment applies upward pressure to the injection molding structure 20 during the secondary injection molding process to fill the R edges 40 of the male terminals 30 caused by stamping to form an approximate right angle, and prevent the injection molding liquid from flowing along the R edges 40 to the top of the male terminals, so that the male terminal 30 is close to the mold, thereby reducing rubber coating. At the same time, the gap is filled by extrusion at the bottom, and the edge position (i.e., the gap) vacated after the bottom is extruded, during the second injection molding, a flow space is reserved for the plastic liquid. After the plastic liquid flows into the space, because there is liquid pressure during injection molding, the liquid squeezes the male terminal 30, and the male terminal 30 is close to the mold, reducing rubber coating.

[0038] The beneficial effects of the method for preventing over-glue injection molding of the connector male terminal of the present invention are:

[0039] The present invention adopts a secondary injection molding process. During the first injection molding, the plurality of male terminals and the injection molding structure are injection molded, so that during the second injection molding, the injection molding structure can give pressure to the plurality of male terminals to make them close to the mold, and squeeze the plurality of male terminals upward during the second injection molding to fill the R edges of the plurality of male terminals caused by stamping, thereby reducing the glue encapsulation of the connector male terminals during the injection molding process and improving product quality.

[0040] To achieve the above object, the present invention further proposes a connector, wherein the male terminal of the connector is manufactured by the connector male terminal anti-over-glue injection molding method as described in the above embodiment, which will not be described in detail here.

[0041] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A method for preventing over-glue injection molding of a connector male terminal, characterized in that: The connector male terminal comprises a fixing seat, an injection molding structure disposed in the fixing seat, and a plurality of male terminals, wherein the plurality of male terminals are arranged in the injection molding structure, and the method comprises the following steps: Step S10, first injection molding: injection molding the injection molding structure of the plurality of male terminals; Step S20, second injection molding: the fixing seat and the injection molding structure and the male terminal in step S10 are injection molded. During the second injection molding process, upward pressure is applied to the injection molding structure so that the male terminals are close to the mold. At the same time, the male terminals are squeezed upward to fill the R edges of the male terminals caused by stamping.

2. The method for preventing over-glue injection molding of a connector male terminal according to claim 1, characterized in that: Before step S10, the method further includes: punching a male terminal, wherein during the punching process of the male terminal, the R edges are formed on both sides of the male terminal.

3. The method for preventing over-glue injection molding of a connector male terminal according to claim 1, characterized in that: In the step S20, when the plurality of male terminals are extruded upward to fill the R edges of the plurality of male terminals caused by stamping, an extrusion groove is formed at the bottom stress-bearing position of the plurality of male terminals, and during injection molding, the extrusion groove forms a gap into which the plastic liquid flows. The step S20 also includes that after the plurality of male terminals are extruded upward, the plastic liquid flows into the gap, and the plurality of male terminals are extruded upward.

4. A connector, characterized in that: The male terminal of the connector is manufactured by the connector male terminal anti-over-glue injection molding method as claimed in any one of claims 1 to 3.

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