A connector plug mold and an injection molding method of a connector plug mold

Abstract

The application discloses a connector plug mold and an injection molding method of the connector plug mold. The connector plug mold comprises an upper mold plate, a lower mold plate, an upper mold core, a lower mold core, a first positioning assembly, a second positioning assembly and a third positioning assembly. The lower mold plate is used for clamping with the upper mold plate. The upper mold core is arranged on one side of the upper mold plate facing the lower mold plate. The lower mold core is arranged on one side of the lower mold plate facing the upper mold plate. The lower mold core and the upper mold core are in a clamped state and are provided with a cavity, a first mounting hole, a second mounting hole and a third mounting hole which are communicated with the cavity. The first positioning assembly, the second positioning assembly and the third positioning assembly are used for positioning an injection molding product in the cavity from three directions. A terminal assembly and a connector shell are integrally injection molded, so that the alignment of each terminal with the connector shell is ensured, and when the connector plug is plugged into an automobile, the connector shell is aligned with a plug interface of the automobile, and each terminal is aligned with a terminal port of the automobile.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to a connector plug mold and a connector plug mold injection method. BACKGROUND

[0002] At present, new energy vehicles develop rapidly, and as the main electrical transmission and signal transmission components of new energy vehicles, electrical connectors have also developed rapidly. The structure and precision of existing new energy vehicles on electrical connectors are very high, and as the link of electrical and signal transmission, electrical connectors need to meet simple and rapid assembly and reliable connection. The existing connector needs to install the conductive terminal, signal terminal and other components into the connector shell to realize terminal fixation, but this way needs to install each terminal respectively, which is complex and has many components, and the position of the multiple terminals on the connector plug is difficult to be uniformly centered, so that the multiple terminals of the connector plug can be aligned with the interface of the vehicle for plugging. SUMMARY

[0003] The purpose of the embodiment of the present application is to provide a connector plug mold, which can integrally injection mold the terminal assembly and the connector shell through the mold, so that the terminal assembly is integrally formed on the connector shell to form a connector plug, and the centering of the terminal assembly and the connector shell is ensured to ensure the stability of the connector plug when plugging.

[0004] To achieve the above purpose, the present application adopts the following technical scheme:

[0005] The present application provides a connector plug mold, which comprises:

[0006] an upper mold plate;

[0007] a lower mold plate used for closing with the upper mold plate;

[0008] an upper mold core arranged on one side of the upper mold plate facing the lower mold plate;

[0009] a lower mold core arranged on one side of the lower mold plate facing the upper mold plate, and the lower mold core and the upper mold core are in a closed state and are provided with a cavity, a first mounting hole, a second mounting hole and a third mounting hole connected with the cavity, the first mounting hole is located in a first direction of the cavity, the second mounting hole is located in a second direction of the cavity, and the third mounting hole is located in a third direction of the cavity;

[0010] a first positioning assembly arranged in the first mounting hole, the first positioning assembly comprises a first driving member and a terminal fixing member connected with each other, and the first driving member is used for driving the terminal fixing member to extend into or exit from the cavity;

[0011] A second positioning assembly is arranged in the second mounting hole and can extend into or out of the cavity;

[0012] A third positioning assembly is arranged in the third mounting hole and can move away from or close to the cavity.

[0013] In an embodiment of the present application, one end of the terminal fixing member facing the cavity is provided with a terminal fixing hole.

[0014] In an embodiment of the present application, the second positioning assembly comprises:

[0015] A second driving member is arranged in the second mounting hole;

[0016] A positioning member is connected with the second driving member and can extend into or out of the cavity under the driving of the second driving member.

[0017] In an embodiment of the present application, the positioning member comprises:

[0018] A sleeve is connected with the second driving member;

[0019] A cable is arranged in the sleeve and one end of the cable extends out of the sleeve, and the end of the cable extending out of the sleeve is used for abutting against the workpiece in the cavity.

[0020] In an embodiment of the present application, the second positioning assembly further comprises a positioning block arranged in the second mounting hole, the positioning block is provided with a positioning hole, and the sleeve is arranged in the positioning hole.

[0021] In an embodiment of the present application, the positioning block comprises a plurality of connected sub-modules, each of the sub-modules is provided with a sub-hole, a plurality of the sub-holes are connected to form the positioning hole.

[0022] In an embodiment of the present application, the upper mold plate is provided with an injection hole, the upper mold core is provided with a feeding hole, the injection hole and the feeding hole are correspondingly connected, the upper mold core and the lower mold core are further provided with a flow guide channel in the closed mold state, one end of the flow guide channel is connected with the feeding hole, and the other end of the flow guide channel is connected with the side wall of the cavity.

[0023] In an embodiment of the present application, the flow guide channel comprises:

[0024] A first flow channel, one end of the first flow channel is connected with the feeding hole;

[0025] A second flow channel is in communication with the first flow channel and communicates with the side wall of the cavity.

[0026] In an embodiment of the present application, the lower die core and the lower die plate are both provided with a material ejection hole, the material ejection hole is in communication with the drainage channel, and the connector plug mold further comprises a ejector pin, the ejector pin is arranged in the material ejection hole.

[0027] In an embodiment of the present application, the third positioning assembly comprises:

[0028] A sliding block is arranged in the lower die core, in the clamped state, an end surface of the sliding block facing the cavity is flush with the side wall surface of the cavity, the sliding block is slidable towards the direction away from the cavity, and an upper surface of the sliding block is provided with a guide inclined hole, the guide inclined hole is inclined downward along the direction away from the cavity;

[0029] A guide inclined column is connected to the upper die core at one end and arranged in the guide inclined hole at the other end in the clamped state.

[0030] An elastic member is connected to the lower die core at one end and connected to the sliding block at the other end, in the clamped state, the elastic member has a tendency to push the sliding block away from the cavity.

[0031] The present application further provides an injection molding method of a connector plug mold, the injection molding method comprises:

[0032] A preparation step: fixing the terminal assembly to the terminal fixing member, driving the upper die core and the lower die core to clamp, and controlling the third positioning assembly to be flush with the inner wall of the cavity;

[0033] A positioning step: the second positioning assembly extends into the cavity and abuts against and positions the terminal assembly;

[0034] An injection molding step: injecting into the cavity, so that the terminal assembly is integrally injection molded with the connector housing, and the third positioning assembly abuts against the injection molded connector housing;

[0035] A demolding step: the upper die core and the lower die core are separated, the first driving member drives the terminal fixing member to separate from the terminal assembly, the second positioning assembly exits the cavity, and the third positioning assembly moves away from the cavity.

[0036] The beneficial effects of the present application are: the first mounting hole, the second mounting hole and the third mounting hole are arranged in the first direction, the second direction and the third direction of the cavity respectively, so that the connector plug injection molded in the cavity is positioned from three directions by the first positioning assembly, the second positioning assembly and the third positioning assembly, and the centration is ensured. Meanwhile, the first positioning assembly includes the first driving member and the terminal fixing member, and the terminal fixing member can be used to fix the terminal assembly. Therefore, before injection molding, the terminal assembly can be installed on the terminal fixing member, so that the terminal assembly is accommodated in the cavity, and the terminal assembly is integrally injection molded with the connector shell during injection molding, so as to ensure the centration of each terminal and the connector shell, and ensure that the connector shell is aligned with the plug interface of the automobile and each terminal is aligned with the terminal port of the automobile when the connector plug is plugged into the automobile. BRIEF DESCRIPTION OF DRAWINGS

[0037] The present application will be further described in detail below according to the drawings and embodiments.

[0038] Figure 1 It is a schematic diagram of the overall structure of the connector plug mold of the present application.

[0039] Figure 2 It is an exploded view of part of the structure of the connector plug mold of the present application.

[0040] Figure 3 It is Figure 2 the local enlarged view of A in the middle;

[0041] Figure 4 It is a local structure enlarged view of the terminal assembly placed in the cavity of the connector plug mold of the present application.

[0042] Figure 5 It is a schematic diagram of the area section of the upper die core and the lower die core in the connector plug mold of the present application.

[0043] Figure 6 It is Figure 5 the local enlarged view of B in the middle;

[0044] Figure 7 It is a schematic diagram of the overall structure of the positioning block in the connector plug mold of the present application.

[0045] Figure 8 It is a schematic diagram of the area section of the connector plug mold of the present application.

[0046] Figure 9 It is Figure 8 the local enlarged view of C in the middle;

[0047] Figure 10 It is a longitudinal sectional view of the connector plug mold of the present application.

[0048] In the drawings:

[0049] 1, upper die plate; 11, injection hole; 2, lower die plate; 3, upper die core; 31, feeding hole; 4, lower die core; 41, cavity; 42, first mounting hole; 43, second mounting hole; 44, third mounting hole; 45, drainage channel; 451, first flow channel; 452, second flow channel; 46, ejecting hole; 5, first positioning assembly; 51, first driving member; 52, terminal fixing member; 521, terminal fixing hole; 6, second positioning assembly; 61, second driving member; 62, positioning member; 621, sleeve; 622, cable; 63, positioning block; 631, positioning hole; 7, third positioning assembly; 71, slider; 711, guide inclined hole; 72, guide inclined column; 73, elastic member; 8, ejector pin; 9, base; 200, terminal assembly. DETAILED DESCRIPTION

[0050] In order to make the technical problems solved in the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present application are described in further detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0051] In the description of the present application, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless explicitly defined and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] When the connector plug is plugged into the automobile, the connector shell needs to be aligned with the plugging port of the automobile, and the conductive terminal and the signal terminal are aligned with the terminal port. The existing connector needs to install the conductive terminal, the signal terminal and other components into the connector shell to realize the fixation of the terminal. However, this method needs to install each terminal respectively, which is complex and has many components. Moreover, the positions of the multiple terminals on the connector plug are difficult to be uniformly centered, so that the multiple terminals of the connector plug can be plugged into and pulled out of the interface of the automobile.

[0054] Based on the above situation, the terminal assembly 200 and the connector shell are integrally injection molded by the mold, and the overall centering of the terminal assembly 200 and the connector shell is ensured, so that the connector shell is aligned with the plugging port of the automobile, and each terminal is aligned with the terminal port of the automobile. It should be noted that the centering refers to the effect that the terminal is plugged into the center of the terminal port when the connector plug is plugged into the automobile. The better the centering is, the more the terminal can be plugged into the center of the terminal port.

[0055] Please refer to Figures 1 to 5 The application provides a connector plug mold. The connector plug mold comprises an upper mold plate 1, a lower mold plate 2, an upper mold core 3, a lower mold core 4, a first positioning assembly 5, a second positioning assembly 6 and a third positioning assembly 7. The lower mold plate 2 is used for clamping with the upper mold plate 1. The upper mold core 3 is arranged on one side of the upper mold plate 1 facing the lower mold plate 2. The lower mold core 4 is arranged on one side of the lower mold plate 2 facing the upper mold plate 1. The lower mold core 4 is provided with a cavity 41 and first, second and third installation holes 42, 43 and 44 connected with the cavity 41 in the clamped state of the lower mold core 4 and the upper mold core 3. The first installation hole 42 is located in a first direction of the cavity 41. The second installation hole 43 is located in a second direction of the cavity 41. The third installation hole 44 is located in a third direction of the cavity 41, that is, the first installation hole 42 is located on a first side of the cavity 41, the second installation hole 43 is located on a second side of the cavity 41, and the third installation hole 44 is located on a third side of the cavity 41. The first positioning assembly 5 is arranged in the first installation hole 42. The first positioning assembly 5 comprises a first driving member 51 and a terminal fixing member 52 connected with each other. The first driving member 51 is used for driving the terminal fixing member 52 to extend into or exit the cavity 41. The second positioning assembly 6 is arranged in the second installation hole 43. The second positioning assembly 6 can extend into or exit the cavity 41. The third positioning assembly 7 is arranged in the third installation hole 44. The third positioning assembly 7 can be away from or close to the cavity 41.

[0056] For example, the first direction is perpendicular to the second direction, and the second direction is perpendicular to the third direction, so that the three positioning assemblies are positioned in the three directions, for example, the first mounting hole 42 is located on the left of the cavity 41, the second mounting hole 43 is located on the top of the cavity 41, and the third mounting hole 44 is located on the right of the cavity 41, that is, the first mounting hole 42 and the third mounting hole 44 are arranged opposite. Of course, the first mounting hole 42 and the second mounting hole 43 can also be arranged opposite, or the second mounting hole 43 and the third mounting hole 44 can also be arranged opposite, which is not limited herein. It can be understood that the first positioning assembly 5 is filled in the first mounting hole 42, and the terminal fixing member 52 is driven to extend or retract in the cavity 41 by the first driving member 51. The terminal fixing member 52 is used for fixing the conductive terminal, the signal terminal and the like, so as to be integrally injection molded with the connector shell in the cavity 41, reduce the installation steps, and ensure the centering of the two. The first driving member 51 can be a motor or a pneumatic cylinder, which is not limited herein, as long as it can drive the terminal fixing member 52 to move reciprocatingly.

[0057] As shown in Figure 4 Optionally, before injection molding the connector shell, the signal terminal and the conductive terminal can be injection molded into a whole terminal assembly 200. The terminal assembly 200 can be injection molded by another mold, that is, the terminal assembly 200 is a semi-finished product. When the connector shell is injection molded, the terminal assembly 200 is arranged in the cavity 41 and is fixed and positioned by the first positioning assembly 5 and the second positioning assembly 6, so that the terminal assembly 200 is fixed in the first direction and the second direction, and the positioning is more stable, so that the connector shell and the terminal assembly 200 are integrally injection molded. When the connector shell is injection molded, the third positioning assembly 7 further positions the terminal assembly 200, so as to complete the whole injection molding. It can be understood that when the mold is demolded, the first positioning assembly 5, the second positioning assembly 6 and the third positioning assembly 7 move away from the cavity 41, so as to facilitate the demolding of the product. Specifically, the first positioning assembly 5 makes the terminal fixing member 52 separate from the terminal assembly 200, the second positioning assembly 6 exits the cavity 41, and the third positioning assembly 7 remains outside the cavity 41.

[0058] As shown in Figure 10 In an embodiment of the present application, the connector plug mold further includes but is not limited to a base 9, a demolding needle and a guide rod. The base 9 is arranged at the bottom of the lower mold plate 2, and the lower mold plate 2 is guided and mounted on the base 9 through the guide rod. At the same time, the demolding needle penetrates the lower mold plate 2 and the lower mold core 4 from the bottom to the top, so as to extend into the cavity 41, thereby ejecting the product after injection molding.

[0059] The first mounting hole 42, the second mounting hole 43 and the third mounting hole 44 are respectively arranged in the first direction, the second direction and the third direction of the cavity 41, so that the connector plug injection molded in the cavity 41 is positioned from three directions by the first positioning assembly 5, the second positioning assembly 6 and the third positioning assembly 7, and the centration is ensured. Specifically, the first positioning assembly 5 and the second positioning assembly 6 are respectively arranged in the first direction and the second direction of the terminal assembly 200, and the third positioning assembly 7 is arranged to abut the connector housing. Meanwhile, the first positioning assembly 5 comprises a first driving member 51 and a terminal fixing member 52, and the terminal fixing member 52 is used to fix the terminal assembly 200. Thus, before injection, the terminal assembly 200 is arranged on the terminal fixing member 52, so that the terminal assembly 200 is accommodated in the cavity 41, and the terminal assembly 200 is integrally injection molded with the connector housing during injection, so as to ensure the centration of each terminal and the connector housing, and ensure that the connector plug is plugged into the automobile, the connector housing is aligned with the plug interface of the automobile, and each terminal is aligned with the terminal port of the automobile.

[0060] As shown in Figure 3 , in an embodiment of the present application, the terminal fixing member 52 is provided with a terminal fixing hole 521 at one end facing the cavity 41. It can be understood that the number of terminal fixing holes 521 is multiple, and the shapes of the holes corresponding to different conductive terminals or signal terminals are different, so as to facilitate the installation and fixation of multiple terminals. Exemplarily, each terminal is inserted and fixed in a terminal fixing hole 521, so as to maintain good centration and realize integral injection molding with the connector housing.

[0061] As shown in Figure 2 , in an embodiment of the present application, the second positioning assembly 6 comprises a second driving member 61 and a positioning member 62, the second driving member 61 is arranged in the second mounting hole 43, the positioning member 62 is connected with the second driving member 61, and the positioning member 62 is telescopic in the cavity 41 under the driving of the second driving member 61.

[0062] In the embodiment, the second driving member 61 can be a motor or a pneumatic cylinder, which is not limited herein, as long as it can drive the positioning member 62 to reciprocate. It can be understood that before the connector housing is injection molded, the positioning member 62 can be driven by the second driving member 61 to extend into the cavity 41, so that the positioning member 62 abuts against the terminal assembly 200. In this way, the positioning member 62 positions the terminal assembly 200 in the second direction to ensure the centering of the terminal assembly 200. It should be noted that the positioning member 62 abuts against one end of the connector plug for connecting the cable 622, specifically, it abuts in the groove of the terminal assembly 200 for connecting the cable 622, that is, the one end of the positioning member 62 extending into the cavity 41 is surrounded by the terminal assembly 200. When injection molding, the injection molding material only contacts the terminal assembly 200 and is integrally formed. After injection molding is completed, the second driving member 61 drives the positioning member 62 to exit the cavity 41, so as to facilitate demolding operation.

[0063] As shown in Figure 3 In an embodiment of the application, the positioning member 62 includes a sleeve 621 and a cable 622. The sleeve 621 is connected to the second driving member 61, and the cable 622 is arranged in the sleeve 621. One end of the cable 622 extends out of the sleeve 621, and the end of the cable 622 extending out of the sleeve 621 is used to abut against the terminal assembly 200 in the cavity 41.

[0064] In the embodiment, in order to ensure that the positioning member 62 positions the terminal assembly 200 more accurately and makes the terminal assembly 200 closer to the position requirement when the injection molding of the connector housing and the terminal assembly 200 is completed, the cable 622 actually needed by the terminal assembly 200 is used to position the terminal assembly 200. Specifically, the sleeve 621 is sleeved with a section of the cable 622, and the end of the cable 622 extending out of the sleeve 621 is positioned by abutting against the terminal assembly 200 in the cavity 41 through the end face of the cable 622. The sleeve 621 is connected to the output end of the second driving member 61, and the sleeve 621 drives the cable 622 to extend and retract in the cavity 41 by the second driving member 61. For example, the cable 622 can be fixed in the sleeve 621 by bonding, clamping or threaded connection, and the sleeve 621 provides support for the cable 622 to avoid bending of the cable 622 affecting the positioning effect.

[0065] Please refer to Figure 3 and Figure 7 In an embodiment of the application, the second positioning assembly 6 further includes a positioning block 63 arranged in the second mounting hole 43. The positioning block 63 is provided with a positioning hole 631, and the sleeve 621 is arranged in the positioning hole 631.

[0066] It can be understood that the positioning block 63 is used for positioning the sleeve 621 to avoid the position deviation of the sleeve 621 affecting the centering property of the terminal assembly 200. In this way, the positioning block 63 is sleeved outside the sleeve 621, and the one end of the sleeve 621 can be straightened by adjusting the position of the positioning block 63, so that the fine adjustment effect is achieved. For example, when the one end of the cable 622 extending out of the sleeve 621 appears slight sag, the end surface of the cable 622 is not in parallel with the abutting surface of the terminal assembly 200, which affects the positioning effect. At this time, the sleeve 621 can be lifted by the positioning block 63, so that the end surface of the cable 622 is parallel to the abutting surface of the terminal assembly 200, and the good centering property of the terminal assembly 200 is maintained.

[0067] Optionally, the positioning block 63 is divided into an upper half block and a lower half block, the upper half block is arranged on the upper die core 3, and the lower half block is arranged on the lower die core 4. In the separated state of the upper die core 3 and the lower die core 4, the relative position of the positioning hole 631 in the closed mold state can be adjusted by adjusting the relative position of the upper half block or the lower half block. For example, the upper half block and the lower half block are adjusted to move upward, and in the closed mold state, the position of the positioning hole 631 moves upward compared with before the adjustment. When the sleeve 621 is clamped in the positioning hole 631, the sleeve 621 is correspondingly lifted by a certain degree, so that the position of the cable 622 is adjusted. In this way, the position of the cable 622 can be adjusted in time.

[0068] In an embodiment of the present application, the positioning block 63 comprises a plurality of connected sub-modules, each of which is provided with a sub-hole, and the plurality of sub-holes are connected to form the positioning hole 631. Specifically, the plurality of sub-modules can be fixed in the second mounting hole 43 by mutual extrusion, or can be connected to each other by bonding, clamping or screw connection, etc., which is not limited herein. It can be understood that the positioning block 63 is divided into a multi-layer structure in the extension direction of the sleeve 621. In this way, it can be divided into multiple levels of adjustment. When the fixed position of the sleeve 621 needs to be adjusted, the relative position of the sub-modules close to the cavity 41 can be adjusted first. If the adjusted position of the sleeve 621 is not ideal, the sub-modules of other levels can be adjusted again until the ideal position is reached. In this way, the multi-layer structure ensures the positioning effect of the sleeve 621, and the multiple levels of adjustment improve the convenience of adjustment and facilitate the control of the adjustment amount to achieve good centering effect.

[0069] Please refer to Figure 8 and Figure 9 In an embodiment of the present application, the upper die plate 1 is provided with an injection hole 11, the upper die core 3 is provided with a feeding hole 31, the injection hole 11 and the feeding hole 31 are correspondingly connected, and the upper die core 3 and the lower die core 4 are further provided with a drainage channel 45 in the closed mold state. One end of the drainage channel 45 is connected with the feeding hole 31, and the other end of the drainage channel 45 is connected with the side wall of the cavity 41.

[0070] It can be understood that the cavity 41 is arranged at the center of the mold, and the injection hole 11 and the feeding hole 31 are arranged eccentrically, that is, the positions of the injection hole 11 and the feeding hole 31 are not directly above the cavity 41. During injection, the injection material is first injected into the drainage channel 45 through the injection hole 11 and the feeding hole 31, and then the injection material is injected into the cavity 41 through the drainage channel 45. Specifically, the drainage channel 45 is located beside the cavity 41, and the discharge port of the drainage channel 45 communicates with the side wall of the cavity 41, that is, the injection is performed from the side of the cavity 41, so that the injection material can better fill the cavity 41 and improve the injection qualification rate. It can be understood that the terminal assembly 200 is placed in the cavity 41. For injection directly above the cavity 41, when the injection material flows to the bottom of the cavity 41 from the side wall of the cavity 41, if the injection continues, the injection material is difficult to continue to flow to the bottom of the terminal assembly 200, which can easily cause insufficient flow of the injection material and cause unqualified problems caused by insufficient material. The injection is performed from the side of the terminal assembly 200, and the injection material can flow into the other side under the action of gravity when reaching the other side of the terminal assembly 200, which can effectively improve the product yield.

[0071] Please refer to Figure 4 and Figure 9 In an embodiment of the present application, the drainage channel 45 includes a first flow channel 451 and a second flow channel 452. One end of the first flow channel 451 communicates with the feeding hole 31, and the second flow channel 452 communicates with the first flow channel 451 and the side wall of the cavity 41.

[0072] In the embodiment, the extension direction of the first flow channel 451 is parallel to the side wall of the cavity 41, the second flow channel 452 intersects the first flow channel 451 at an obtuse angle, and the extension direction of the second flow channel 452 intersects the side wall of the cavity 41. In this way, the injection material flows from the first flow channel 451 to the second flow channel 452, and then flows into the cavity 41 from the second flow channel 452. The second flow channel 452 plays a buffering role to improve the uniformity of the injection material entering the cavity 41. Optionally, a cold material well is arranged at the end of the first flow channel 451 away from the second flow channel 452. The cold material well is a cavity at the end of the first flow channel 451, which is used to capture the cold material generated between two injections, thereby preventing the blockage of the flow channel or the sprue. If the cold material is mixed into the cavity 41, internal stress is easily generated in the product. In other embodiments, two cold material wells can be arranged at the intersection of the first flow channel 451 and the second flow channel 452. One cold material well is arranged along the extension direction of the first flow channel 451, and the other cold material well is arranged along the extension direction of the second flow channel 452, so as to improve the product yield.

[0073] Please refer to Figure 8 and Figure 9In an embodiment of the present application, the lower die core 4 and the lower die plate 2 are both provided with a material ejection hole 46, the material ejection hole 46 is communicated with the drainage channel 45, and the connector plug mold further comprises a ejector pin 8, the ejector pin 8 is arranged in the material ejection hole 46. It can be understood that, in order to facilitate demolding, the bottom of the drainage channel 45 is provided with a material ejection hole 46, the ejector pin 8 is arranged in the material ejection hole 46, part of the injection material is borne by the ejector pin 8, and when demolding, the injection material corresponding to the drainage channel 45 can be ejected from the top of the ejector pin 8, so as to facilitate the next injection after demolding.

[0074] As shown in the drawings, Figure 10 In an embodiment of the present application, the third positioning assembly 7 comprises a sliding block 71, a guide inclined column 72 and an elastic member 73, the sliding block 71 is arranged on the lower die core 4, in the closed mold state, one end of the sliding block 71 facing the cavity 41 is flush with the side wall surface of the cavity 41, the sliding block 71 can slide in the direction away from or close to the cavity 41, the upper surface of the sliding block 71 is provided with a guide inclined hole 711, the guide inclined hole 711 is inclined downward along the direction away from the cavity 41, in the closed mold state, one end of the guide inclined column 72 is connected to the upper die core 3, and the other end is arranged in the guide inclined hole 711, one end of the elastic member 73 is connected to the lower die core 4, and the other end is connected to the sliding block 71, in the closed mold state, the elastic member 73 has a tendency to push the sliding block 71 away from the cavity 41.

[0075] In the embodiment, the guide inclined column 72 is arranged on the upper die core 3 and extends obliquely on the side of the upper die core 3 facing the lower die core 4, and at the same time, the sliding block 71 is pushed away from the cavity 41 by the elastic member 73. When the mold is closed, the upper die core 3 moves towards the lower die core 4, so that the guide inclined column 72 is inserted into the guide inclined hole 711, when the guide inclined column 72 is gradually inserted into the guide inclined hole 711, the guide inclined column 72 presses and pushes the sliding block 71 to move in the direction towards the cavity 41, so that the end surface of the sliding block 71 is finally flush with one side wall of the cavity 41, thereby positioning and injection molding. It can be understood that, when demolding, the upper die core 3 is separated from the lower die core 4, at this time, the guide inclined column 72 moves upward and pushes the sliding block 71 to move in the direction away from the cavity 41, and under the action of the pushing force of the elastic member 73, the sliding block 71 will not be reset in the direction towards the cavity 41. In this way, the sliding block 71 automatically exits the cavity 41, so as to facilitate demolding. The elastic member 73 can be a spring, a spring sheet or the like, which is not limited here, as long as it can push the sliding block 71 to move away from the cavity 41. It should be noted that the sliding block 71 is arranged on the lower die core 4, in order to avoid the sliding block 71 from being separated from the lower die core 4 under the pushing force of the elastic member 73, a limiting block is arranged on the lower die core 4, the limiting block is located on the side of the sliding block 71 away from the cavity 41, and is used for stopping and limiting the sliding block 71.

[0076] The injection molding process of the connector plug mold is introduced as follows:

[0077] In order to better realize the integrated injection molding of the plurality of terminals and the connector shell, the plurality of terminals can be first integrally injection molded by another mold to form a terminal assembly 200, so that the terminal assembly 200 as a semi-finished product can be placed on the lower mold core and fixed by the terminal fixing piece 52. After the terminal assembly 200 is fixed, the upper mold plate 1 and the upper mold core 3 are driven to approach the lower mold core 4 and the lower mold plate 2 to complete the mold closing. During the process, the guide inclined column 72 on the upper mold core 3 is gradually inserted into the guide inclined hole 711 of the sliding block 71, so that the sliding block 71 moves towards the direction of approaching the cavity 41, and finally the end face of the sliding block 71 is flush with the inner wall of the cavity 41 to position the connector shell during injection molding. After the mold closing action is completed, the second positioning assembly 6 extends into the cavity 41, specifically the sleeve 621 drives the cable 622 to extend into the cavity 41, and the cable 622 is abutted to the terminal assembly 200 to ensure the centering thereof. In this way, injection molding is performed through the injection hole 11 to complete the integrated injection molding of the terminal assembly 200 and the connector shell. That is, the terminal fixing piece 52 of the first positioning assembly 5 positions the terminal assembly 200 in the first direction, the cable 622 of the second positioning assembly 6 positions the terminal assembly 200 in the second direction, and the sliding block 71 of the third positioning assembly 7 positions the connector shell after injection molding in the third direction. Finally, the first driving piece 51 drives the terminal fixing piece 52 to separate from the terminal assembly 200, and the second driving piece 61 drives the sleeve 621 to exit the cavity 41, and in the process that the upper mold core 3 moves away from the lower mold core 4, the sliding block 71 moves away from the cavity 41 to separate from the connector shell, facilitating demolding. Subsequently, the ejector pin 8 and the demolding pin eject the molded product in the cavity 41 and the drainage channel 45.

[0078] An injection molding method of a connector plug mold, comprising:

[0079] Preparation step: fixing the terminal assembly 200 to the terminal fixing piece 52, driving the upper mold core 3 and the lower mold core 4 to close the mold, and controlling the third positioning assembly 7 to be flush with the inner wall of the cavity 41; it should be noted that the terminal assembly 200 is a semi-finished product integrally molded by another mold with a plurality of terminals such as signal terminals and conductive terminals. In the third positioning assembly 7, the end face of the sliding block 71 is flush with one side of the inner wall of the cavity 41, and of course, the stop block can also be driven by a driving structure such as a pneumatic cylinder to be flush with one side of the inner wall of the cavity 41.

[0080] Positioning step: the second positioning assembly 6 extends into the cavity 41 and abuts against the terminal assembly 200; specifically, the second positioning assembly 6 moves the sleeve 621 by the second driving piece 61 to drive the cable 622 to extend into or exit the cavity, and the cable 622 abuts against the terminal assembly 200 to realize the positioning of the terminal assembly 200 in the second direction.

[0081] Injection step: injecting into the cavity 41, so that the terminal assembly 200 is integrally injection molded with the connector housing, and the third positioning assembly 7 abuts the injection molded connector housing; it should be noted that when injection molding, the injection material is stopped by the slider 71 of the third positioning assembly 7, that is, one end of the slider 71 abuts the injection molded connector housing, so as to ensure the centring property.

[0082] Demolding step: the upper die core 3 and the lower die core 4 are separated, the first driving member 51 drives the terminal fixing member 52 to disengage from the terminal assembly 200, the second positioning assembly 6 exits the cavity 41, and the third positioning assembly 7 is away from the cavity 41. It can be understood that the terminal fixing member 52 moves towards the direction away from the cavity 41, so that the terminal assembly 200 exits the terminal fixing hole 521, at the same time, the cable 622 exits the cavity 41 to disengage from the abutting terminal assembly 200, and the slider 71 of the third positioning assembly 7 is also away from the cavity 41, thereby disengaging from the abutting connector housing, so as to facilitate demolding. The demolding can be achieved by the ejector pin 8 and the demolding pin ejecting the injection molded connector housing from the lower die core 3, and the demolding operation is completed.

[0083] In the description herein, it should be understood that the terms "upper", "lower", "left", "right", and the like orientation or position relationship are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0084] In the description of the present specification, the description referring to the terms "an embodiment", "an example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0085] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not necessarily contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0086] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted as a limitation on the scope of protection of the present application in any way. Based on the explanation here, those skilled in the art do not need to make creative efforts to think of other specific embodiments of the present application, and these embodiments will fall within the scope of protection of the present application.

Claims

1. A connector plug mold characterized by comprising: The connector plug mold comprises: an upper mold plate (1); a lower mold plate (2) used for closing with the upper mold plate (1); an upper mold core (3) arranged on one side of the upper mold plate (1) facing the lower mold plate (2); a lower mold core (4) arranged on one side of the lower mold plate (2) facing the upper mold plate (1), the lower mold core (4) being provided with a cavity (41) and first, second and third installation holes (42, 43, 44) connected with the cavity (41) in a closed state with the upper mold core (3), the first installation hole (42) being located in a first direction of the cavity (41), the second installation hole (43) being located in a second direction of the cavity (41), and the third installation hole (44) being located in a third direction of the cavity (41); a first positioning assembly (5) arranged in the first installation hole (42), the first positioning assembly (5) comprising a first driving member (51) and a terminal fixing member (52) connected with each other, the first driving member (51) being used for driving the terminal fixing member (52) to extend into or exit from the cavity (41); a second positioning assembly (6) arranged in the second installation hole (43), the second positioning assembly (6) being capable of extending into or exiting from the cavity (41); a third positioning assembly (7) arranged in the third installation hole (44), the third positioning assembly (7) being capable of moving away from or close to the cavity (41); the second positioning assembly (6) comprises: a second driving member (61) arranged in the second installation hole (43); a positioning member (62) connected with the second driving member (61), the positioning member (62) being capable of extending into or exiting from the cavity (41) under the driving of the second driving member (61); the positioning member (62) comprises: a sleeve (621) connected with the second driving member (61); a cable (622) arranged in the sleeve (621), one end of the cable (622) extending out of the sleeve (621), and the end of the cable (622) extending out of the sleeve (621) being used for abutting against a workpiece in the cavity (41); the second positioning assembly (6) further comprises a positioning block (63) arranged in the second installation hole (43), the positioning block (63) being provided with a positioning hole (631), and the sleeve (621) being arranged in the positioning hole (631); the third positioning assembly (7) comprises: A sliding block (71) is arranged on the lower die core (4), and an end surface of the sliding block (71) facing the cavity (41) is flush with a side wall surface of the cavity (41) in the clamped state, the sliding block (71) is slidable towards the cavity (41), and an upper surface of the sliding block (71) is provided with a guide inclined hole (711) inclined downward along a direction away from the cavity (41); A guide inclined column (72) is connected to the upper die core (3) at one end and penetrates the guide inclined hole (711) at the other end in the clamped state; An elastic member (73) is connected to the lower die core (4) at one end and connected to the sliding block (71) at the other end, and the elastic member (73) has a tendency to push the sliding block (71) away from the cavity (41) in the clamped state.

2. The connector plug mold according to claim 1, wherein The positioning block (63) comprises a plurality of connected sub-modules, each of the sub-modules is provided with a sub-hole, a plurality of the sub-holes are connected to form the positioning hole (631) in a multi-layer structure.

3. The connector plug mold according to claim 1 or 2, characterized by The upper die plate (1) is provided with an injection hole (11), the upper die core (3) is provided with a feeding hole (31), the injection hole (11) and the feeding hole (31) are connected in correspondence, and the upper die core (3) and the lower die core (4) are further provided with a drainage channel (45) in the clamped state, one end of the drainage channel (45) is connected to the feeding hole (31), and the other end of the drainage channel (45) is connected to the side wall of the cavity (41).

4. The connector plug mold of claim 3, wherein, The drainage channel (45) comprises: A first flow channel (451) connected to the feeding hole (31) at one end; A second flow channel (452) connected to the first flow channel (451) and connected to the side wall of the cavity (41).

5. The connector plug mold of claim 3, wherein, The lower die core (4) and the lower die plate (2) are both provided with a material ejecting hole (46) connected to the drainage channel (45), and the connector plug mold further comprises a ejector pin (8) penetrating the material ejecting hole (46).

6. A method of injection molding a connector plug mold as claimed in any one of claims 1 to 5, characterized in that, The injection method comprises: A preparation step of fixing a terminal assembly (200) to the terminal fixing member (52), driving the upper die core (3) and the lower die core (4) to clamp, and controlling the third positioning assembly (7) to be flush with the inner wall of the cavity (41); A positioning step of extending the second positioning assembly (6) into the cavity (41) and abutting and positioning the terminal assembly (200); An injection step of injecting into the cavity (41) to integrally injection mold the terminal assembly (200) and the connector housing, and abutting the third positioning assembly (7) to the injection molded connector housing; Demolding step: the upper die core (3) and the lower die core (4) are separated, the first driving member (51) drives the terminal fixing member (52) to be separated from the terminal assembly (200), the second positioning assembly (6) exits the cavity (41), and the third positioning assembly (7) is away from the cavity (41).

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