Injection molding structure and mold for cable plugging terminal and plugging shell

Abstract

The utility model provides an injection molding structure of a cable plug terminal and a plug shell and a mold, the injection molding structure of the cable plug terminal and the plug shell comprises a mold core assembly, a limiting assembly and an ejection assembly, the mold core assembly comprises a fixed mold core and a movable mold core, the fixed mold core and the movable mold core form a limiting groove, a terminal accommodating groove and an injection molding cavity which are communicated in sequence, and the ejection assembly is arranged in the limiting groove; the movable mold core is provided with an injection molding channel communicated with the injection molding cavity, the limiting assembly comprises a limiting block and an abutting elastic piece, the limiting block is installed in the limiting groove and provided with an insertion groove used for limiting the insertion terminal, the abutting elastic piece is arranged in the insertion groove and used for clamping the insertion terminal, and the ejection assembly is installed in the fixed mold core and used for ejecting out the limiting block. The abutting elastic sheet abuts against and fixes the plugging terminal, so that the shaking of the plugging terminal is reduced, and the injection molding quality of the plugging terminal and the connecting line is improved; by inserting the plug-in terminal into the plug-in groove, the mounting and fixing speed of the plug-in terminal is high, and the de-molded plug-in terminal is simply separated from the limiting block.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of connecting lines, in particular to an injection molding structure and mold of a cable plug-in terminal and plug-in shell. BACKGROUND

[0002] The connecting line of the automobile wire harness is provided with a plug-in terminal, and the connecting line of the automobile wire harness needs to be injection molded at the connecting position of the plug-in terminal to integrate the connecting line and the plug-in terminal.

[0003] When the automobile wire harness is injection molded, the plug-in terminal is first placed in the fixed groove of the fixed plate, and then the plug-in terminal is locked before injection molding. Since the plug-in terminal is installed in the fixed groove, when the mold is not closed, the plug-in terminal is easily offset between the plug-in terminal and the plug-in shell due to the size difference of the plug-in terminal, resulting in a decrease in the injection molding quality of the plug-in terminal and the connecting line.

[0004] As disclosed in the comparative file CN202121784512.3, a connecting line plug shell injection mold includes an upper mold, a lower mold, a wire, a terminal seat, and a plug, the upper mold and the lower mold are provided with a plug model groove corresponding to the plug, a molding groove for injection molding, and a wire model groove corresponding to the wire, the part of the plug away from the terminal seat is located in the plug model groove, and the part of the wire away from the terminal seat is located in the wire model groove. When the upper mold and the lower mold are closed, a gap is formed between the part of the plug located in the plug model groove and the inner wall of the plug model groove, and the plug shell leaves the molding groove smoothly. However, when the size of the plug is different, the plug is placed in the plug model groove, and the plug is not fixed before injection molding, so the plug is easily offset from the wire, resulting in a decrease in the connection quality of the plug and the wire. Utility model content

[0005] The purpose of the present disclosure is to overcome the shortcomings in the prior art and provide an injection molding structure and mold of a cable plug-in terminal and plug-in shell with fast terminal fixing and disassembling speed.

[0006] The purpose of the present disclosure is achieved by the following technical solutions:

[0007] An injection molding structure of a cable plug-in terminal and plug-in shell includes a mold core assembly, a limiting assembly, and an ejection assembly, the mold core assembly includes a fixed mold core and a movable mold core, the fixed mold core is provided with a fixed mold accommodating groove, the movable mold core is provided with a movable mold accommodating groove, the fixed mold accommodating groove and the movable mold accommodating groove are communicated to form an injection molding cavity, the movable mold core is provided with an injection molding channel, the injection molding channel is communicated with the injection molding cavity,

[0008] The movable die core and the fixed die core jointly form a limiting groove and a terminal accommodating groove for placing the terminal, the limiting groove, the terminal accommodating groove and the injection cavity are sequentially communicated, the limiting assembly comprises a limiting block and an abutting spring piece, the limiting block is installed in the limiting groove, the limiting block is provided with a plug-in groove for limiting part of the plug-in terminal, the abutting spring piece is fixed to the limiting block, the abutting spring piece is arranged in the plug-in groove, and the abutting spring piece is used for clamping the inner wall of the plug-in terminal, the fixed die core is further provided with a movable groove and a movable channel which are in communication, the movable channel is communicated with the limiting groove, the ejection assembly is installed in the movable groove, the telescopic end of the ejection assembly penetrates through the movable channel, and the ejection assembly is used for ejecting the limiting block.

[0009] In one of the embodiments, a guide inclined surface is formed on the side of the limiting block away from the injection cavity.

[0010] In one of the embodiments, the two ends of the limiting block extend to the outside of the fixed die core and the movable die core.

[0011] In one of the embodiments, the injection channel comprises a first runner, a second runner and a submarine gate channel, the second runner is communicated with the first runner, and the submarine gate channel is communicated with the injection cavity.

[0012] In one of the embodiments, the fixed die core is provided with a guide column, the movable die core is provided with a guide hole, and the guide column penetrates through the guide hole.

[0013] In one of the embodiments, the limiting assembly further comprises a pressing block, the fixed die core and the movable die core form an installation groove therebetween, the installation groove is communicated with the injection cavity, the pressing block is installed in the installation groove, and the pressing block is provided with a wire harness through hole.

[0014] In one of the embodiments, the abutting spring piece is in a wave type structure.

[0015] In one of the embodiments, the number of the limiting groove, the terminal accommodating groove and the injection cavity is two, the two injection cavities are communicated with the injection channel, and one abutting spring piece is arranged in each plug-in groove.

[0016] In one of the embodiments, the two limiting grooves, the two terminal accommodating grooves and the two injection cavities are symmetrically arranged along the center line of the injection channel.

[0017] A mold comprises the injection structure of the cable plug-in terminal and the plug-in shell in any of the above embodiments.

[0018] Compared with the prior art, the present disclosure has at least the following advantages:

[0019] The aforementioned injection molding structure of the cable connector and connector housing uses a contact spring to abut against the inner wall of the connector, thus fixing the position of the connector and reducing its shaking, thereby improving the injection molding quality of the connector and the connecting wire. By inserting the connector into the connector slot, the installation and fixing speed of the connector is fast, and the separation of the connector from the limiting block after demolding is simple, thereby accelerating the production efficiency of the injection molding connector housing for the connecting wire. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the injection-molded structure of a cable connector terminal and a connector housing according to one embodiment;

[0022] Figure 2 for Figure 1 A schematic diagram of the moving mold core of the injection molding structure of the cable plug-in terminal and the plug-in housing;

[0023] Figure 3 for Figure 1 A schematic diagram of the mold core of the injection molding structure of the cable plug-in terminal and the plug-in housing;

[0024] Figure 4 for Figure 3 The image shows a magnified view of the mold core at point A. Detailed Implementation

[0025] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0029] like Figures 1 to 4 As shown, it is an injection molding structure 10 of a cable plug-in terminal and plug-in housing according to an embodiment of the present disclosure, including a mold core assembly 100, a limiting assembly 200 and an ejection assembly 300. The mold core assembly 100 includes a fixed mold core 110 and a movable mold core 120. The fixed mold core 110 has a fixed mold receiving groove 1101, and the movable mold core 120 has a movable mold receiving groove 1201. The fixed mold receiving groove 1101 and the movable mold receiving groove 1201 communicate to form an injection cavity 101. The movable mold core 120 has an injection channel 1202, and the injection channel 1202 communicates with the injection cavity 101.

[0030] Furthermore, a limiting groove 102 and a terminal receiving groove 103 are jointly formed between the moving mold core 120 and the fixed mold core 110. The terminal receiving groove 103 is used to place the plug-in terminal. The limiting groove 102, the terminal receiving groove 103, and the injection cavity 101 are sequentially connected. The limiting component 200 includes a limiting block 210 and an abutment spring 220. The limiting block 210 is installed in the limiting groove 102. The limiting block 210 has a plug-in groove 2101, which is used to limit the portion of the plug-in terminal. The abutment spring... The piece 220 is fixed to the limiting block 210. The abutting spring 220 is disposed in the insertion groove 2101. The abutting spring 220 is used to clamp the inner wall of the insertion terminal. The fixed mold core 110 is also provided with a connected movable groove 1102 and a movable channel 1103. The movable channel 1103 is connected to the limiting groove 102. The ejection assembly 300 is installed in the movable groove 1102. The telescopic end of the ejection assembly 300 passes through the movable channel 1103. The ejection assembly 300 is used to eject the limiting block 210.

[0031] In the embodiment, when injection molding is performed, the connecting wire is connected with the female terminal, the end of the plug-in terminal is quickly inserted into the plug-in slot 2101, the abutting spring 220 abuts against the inner wall of the plug-in terminal, so that the position of the plug-in terminal is fixed, thereby reducing the shaking of the plug-in terminal, part of the connecting wire is located in the injection cavity 101, and then the movable mold core 120 is closed on the positioning, injection molding is performed through the injection channel 1202, the injection liquid enters the injection cavity 101 to form the injection plug-in shell to protect the connecting wire, after the injection plug-in shell is integrally formed with the plug-in terminal, the movable mold core 120 is opened, the ejector assembly 300 ejects the limiting block 210, the plug-in terminal is pulled out of the plug-in slot 2101, so that the plug-in terminal is quickly separated from the limiting block 210, and then the connecting wire with the injection plug-in shell is taken out.

[0032] The injection molding structure 10 of the cable plug-in terminal and the plug-in shell has the advantages that the position of the plug-in terminal is fixed by abutting against the inner wall of the plug-in terminal through the abutting spring 220, the shaking of the plug-in terminal is reduced, and the quality of injection molding of the plug-in terminal and the connecting wire is improved; the plug-in terminal is inserted into the plug-in slot 2101, the installation and fixing speed of the plug-in terminal is high, the plug-in terminal is separated from the limiting block 210 after demolding, and the production efficiency of the injection plug-in shell of the connecting wire is improved.

[0033] As shown in Figure 1 In one of the embodiments, a guide inclined surface 211 is formed on the side, away from the injection cavity 101, of the limiting block 210. In the embodiment, when the limiting block 210 is installed into the limiting groove 102, the guide inclined surface 211 can guide the limiting block 210 to slide into the limiting groove 102, so that the resistance and difficulty during installation are reduced, the guide inclined surface 211 gradually contacts and abuts against the edge of the limiting groove 102 during the process that the limiting block 210 slides into the limiting groove 102, so that it is ensured that the limiting block 210 can be accurately positioned in the limiting groove 102.

[0034] As shown in Figure 3 In one of the embodiments, the two ends of the limiting block 210 extend to the outside of the fixed mold core 110 and the movable mold core 120. In the embodiment, the operator can contact the limiting block 210 without disassembling the entire mold, so that the operator can directly separate the contact between the limiting block 210 and the fixed mold core 110 and the movable mold core 120.

[0035] As shown in Figure 2As shown in the drawings, in one embodiment, the injection channel 1202 includes a first runner 1203, a second runner 1204, and a submarine gate channel 1205, the second runner 1204 is communicated with the first runner 1203, and the submarine gate channel 1205 is communicated with the injection cavity 101. In this embodiment, the submarine gate channel 1205 is communicated with the second runner 1204 at the end with a larger radius, and is communicated with the injection cavity 101 at the end with a smaller radius. In this embodiment, the first runner 1203 guides the molten plastic from the nozzle of the injection molding machine to the inside of the mold, the second runner 1204 further guides the flow of molten plastic material into the submarine gate channel 1205 of the mold, and the submarine gate channel 1205 guides the flow of molten plastic into the injection cavity 101. The submarine gate channel 1205 is conical in structure, which reduces the gate of the submarine gate channel 1205 and the injection cavity 101, thereby reducing the gate marks of the injection plug-in shell.

[0036] As shown in the drawings, Figure 2 and Figure 3 As shown in the drawings, in one embodiment, the fixed die core 110 is provided with a guide column 111, the movable die core 120 is provided with a guide hole 1206, and the guide column 111 is arranged in the guide hole 1206. In this embodiment, when the movable die core 120 and the fixed die core 110 are closed, the guide column 111 will penetrate into the guide hole 1206, playing a role in positioning and guiding. The cooperation of the guide column 111 and the guide hole 1206 can accurately control the closing position of the mold, thereby reducing the risk of mold misalignment.

[0037] As shown in the drawings, Figure 3 As shown in the drawings, in one embodiment, the limiting assembly 200 further includes a pressing block 230, the movable die core 120 and the fixed die core 110 form an installation groove 104, the installation groove 104 is communicated with the injection cavity 101, the pressing block 230 is installed in the installation groove 104, and the pressing block 230 is provided with a wire harness through hole 3301. In this embodiment, the wire harness through hole 3301 of the pressing block 230 can fix the wire harness, so that the wire harness will not move or deform during the injection molding process. By installing the pressing block 230 in the installation groove 104, the position stability of the wire harness during the injection molding process can be ensured, thereby improving the precision of the injection plug-in shell.

[0038] As shown in the drawings, Figure 4 As shown in the drawings, in one embodiment, the abutting spring plate 220 is of a wave type structure. In this embodiment, the wave type structure of the abutting spring plate 220 and the inner wall of the plug-in terminal increase the clamping force on the plug-in terminal. The spring plate may be deformed due to frequent plugging and unplugging or temperature changes. The wave type abutting spring plate 220 can better disperse stress, thereby reducing the risk of deformation.

[0039] AsFigure 1 and Figure 2 As shown, in one embodiment, there are two of each of the limiting groove 102, terminal receiving groove 103, and injection cavity 101. Both injection cavities 101 are connected to the injection channel 1202, and each insertion groove 2101 is provided with a corresponding abutment spring 220. In this embodiment, the abutment spring 220 provides additional fixing force during injection molding to ensure that each insertion terminal remains stable in the corresponding limiting groove 102. By providing two injection cavities 101, two injection molded parts can be formed simultaneously, thereby improving production efficiency.

[0040] like Figure 2 As shown, in one embodiment, the two limiting grooves 102, the two terminal receiving grooves 103, and the two injection cavities 101 are all symmetrically arranged along the centerline of the injection channel 1202. In this embodiment, when the molten plastic enters the injection cavity 101 through the injection channel 1202, it will be subject to the same flow resistance and pressure distribution, resulting in the same filling state of the plastic in the two injection cavities 101. This reduces injection defects caused by uneven flow, thereby improving the consistency of the injection-molded insert housing in the two injection cavities 101.

[0041] This application also provides a plug-in housing injection mold, characterized in that it includes the injection molding structure 10 of the cable plug-in terminal and the plug-in housing as described in any of the above embodiments. In this embodiment, by inserting the plug-in terminal into the plug-in groove 2101, the installation and fixing speed of the plug-in terminal is fast, and the separation of the plug-in terminal from the limiting block 210 is simple, thereby accelerating the production efficiency of injection molding plug-in housings for connecting wires.

[0042] Compared with the prior art, this disclosure has at least the following advantages:

[0043] The aforementioned injection molding structure 10 and mold of the cable connector and connector housing, through the abutting spring 220 abutting against the inner wall of the connector, fixes the position of the connector, reduces the shaking of the connector, and thus improves the injection molding quality of the connector and the connecting wire; by inserting the connector into the connector groove 2101, the installation and fixing speed of the connector is fast, and the connector is easy to separate from the limiting block 210 after demolding, thereby speeding up the production efficiency of the injection molding connector housing of the connecting wire.

[0044] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An injection molding structure of a cable plug-in terminal and a plug-in housing, comprising a mold core assembly, a limiting assembly and an ejection assembly, the mold core assembly comprising a fixed mold core and a movable mold core, the fixed mold core being provided with a fixed mold accommodating groove, the movable mold core being provided with a movable mold accommodating groove, the fixed mold accommodating groove and the movable mold accommodating groove being communicated to form an injection molding cavity, the movable mold core being provided with an injection molding channel, the injection molding channel being communicated with the injection molding cavity, characterized in that, the movable mold core and the fixed mold core jointly form a limiting groove and a terminal accommodating groove, the terminal accommodating groove being used for placing the terminal, the limiting groove, the terminal accommodating groove and the injection molding cavity being communicated in sequence, the limiting assembly comprising a limiting block and an abutting spring sheet, the limiting block being installed in the limiting groove, the limiting block being provided with a plug-in groove, the plug-in groove being used for limiting part of the plug-in terminal, the abutting spring sheet being fixed to the limiting block, the abutting spring sheet being arranged in the plug-in groove, the abutting spring sheet being used for clamping the inner wall of the plug-in terminal, the fixed mold core being further provided with a movable groove and a movable channel which are communicated, the ejection assembly being installed in the movable groove, the ejection assembly being provided with a telescopic end which is arranged in the movable channel, the movable channel being communicated with the limiting groove, the ejection assembly being used for ejecting the limiting block.

2. The injection molding of a cable connector and a connector housing according to claim 1, characterized in that A guide inclined surface is formed on the side of the limiting block which is away from the injection molding cavity.

3. The injection molded structure of a cable connector terminal and a connector housing according to claim 1, characterized in that, The two ends of the limiting block extend to the outside of the fixed mold core and the movable mold core.

4. The injection molded structure of a cable connector terminal and a connector housing according to claim 1, characterized in that, The injection molding channel comprises a first runner, a second runner and a submarine gate channel, the second runner being communicated with the first runner, the submarine gate channel being communicated with the injection molding cavity.

5. The injection molded structure of a cable connector terminal and a connector housing according to claim 1, characterized in that, The fixed mold core is provided with a guide column, the movable mold core is provided with a guide hole, and the guide column is arranged in the guide hole.

6. The injection molded structure of a cable connector terminal and a connector housing according to claim 1, characterized in that, The limiting assembly further comprises a pressing block, the movable mold core and the fixed mold core jointly form an installation recess, the installation recess being communicated with the injection molding cavity, the pressing block being installed in the installation recess, and the pressing block being provided with a wire harness through hole.

7. The injection molded structure of a cable connector terminal and a connector housing according to claim 1, wherein The abutting spring sheet is of a wave type structure.

8. The injection molded structure of a cable connector terminal and a connector housing according to claim 1, characterized in that, The number of the limiting groove, the terminal accommodating groove and the injection molding cavity is two, the two injection molding cavities are communicated with the injection molding channel, and one abutting spring sheet is arranged in each plug-in groove.

9. The injection molded structure of a cable connector terminal and a connector housing according to claim 8, characterized in that, The two limiting grooves, the two terminal accommodating grooves and the two injection molding cavities are symmetrically arranged along the center line of the injection molding channel.

10. A mold characterized in that, The injection molding structure of the cable plug-in terminal and the plug-in housing according to any one of the preceding claims 1-9.

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