A connector injection molding apparatus

Abstract

The application relates to a connector injection molding equipment and relates to the technical field of connector injection molding. The equipment comprises a rack, an upper mold table, a lower mold table and a mold closing driving member, the top surface of the lower mold table is provided with a cable storage pay-off cavity, and the upper mold table is provided with an injection molding part; the pay-off cavity is a double-side through structure, the lower mold table is divided into a main supporting table and a slidable auxiliary supporting table, the upper mold table is correspondingly divided into an injection molding mold table and a matching mold table, and the two are connected and adjusted in linkage through a guide part to adjust the width of the pay-off cavity. The application can store the outgoing cable of the connector insert, realizes flexible adaptation of the width of the pay-off cavity and side pushing for taking the part, improves the mold closing precision and production adaptability, and guarantees the injection molding quality.

Description

Technical Field

[0001] This application relates to the field of connector injection molding technology, and in particular to a connector injection molding equipment. Background Technology

[0002] Connectors are fundamental components widely used in electronic devices, automotive electronics, industrial automation, and other fields to achieve reliable connections for circuits or signals. Injection molding is a key process in connector manufacturing, involving injecting molten plastic into a mold cavity under high pressure, followed by cooling and shaping to obtain the connector shell or overlay, meeting the connector's requirements for insulation, protection rating, and mechanical strength.

[0003] In actual production, some connectors have cables pre-connected to them before injection molding. For example, M12 molded connectors require the wires and terminals to be precisely crimped together by a machine before injection molding, and then encapsulated in a special mold; automotive wiring harness connectors often have the terminals and cables crimped or soldered together before injection molding.

[0004] In this field and related injection molding processes, such semi-finished connector assemblies, in which internal functional components are pre-assembled and lead cables are already connected before injection molding, are commonly referred to as "connector inserts." These connector inserts are placed in the cavity of the injection mold as inserts, and through secondary injection molding, an insulating shell, sheath, or sealing layer is formed on their exterior to ultimately obtain a complete connector product.

[0005] When such connector inserts are injection molded, the cables connected to them are prone to swinging or displacement due to the pressure of the injection block, the action of the hydraulic cylinder, or the force exerted on the workpiece itself, which affects the positioning of the terminal body in the lower fixture. Summary of the Invention

[0006] In order to improve the problems existing in the above-mentioned technology, this application provides a connector injection molding equipment.

[0007] The connector injection molding equipment provided in this application adopts the following technical solution: A connector injection molding apparatus includes a frame; an upper mold platform disposed on the frame, the upper mold platform having an injection section for injecting molten plastic material into a mold cavity; a lower mold platform disposed on the frame and opposite to the upper mold platform, the top surface of the lower mold platform forming a support surface for supporting the mold, the support surface having a wire feeding cavity for receiving cables led out from connector inserts placed in the mold; and a mold closing drive for driving the upper mold platform to move in a direction closer to or away from the lower mold platform.

[0008] In the implementation of the above technical solution, the frame serves as the installation base for the overall equipment, on which an upper mold platform and a lower mold platform are arranged opposite each other. The upper mold platform is provided with an injection part for injecting molten plastic material into the mold cavity, and the top surface of the lower mold platform forms a support surface for supporting the mold. The mold closing drive is used to drive the upper mold platform to move in a direction close to or away from the lower mold platform to realize mold closing or mold opening. During operation, the operator places the mold on the support surface of the lower mold platen and inserts the pre-connected connector insert into the mold cavity for positioning. Since there is a cable release cavity on the support surface, the cable led out by the connector insert can be stored in the cable release cavity, so that the cable is no longer hanging or scattered in the mold closing area above the support surface. Then, the mold closing drive unit drives the upper mold platen to move closer to the lower mold platen to complete the mold closing action. At this time, the cable has been stored in the cable release cavity and will no longer swing or shift due to the pressure of the injection block, the action of the hydraulic cylinder, or the force of the workpiece itself, thus ensuring that the positioning state of the terminal body in the lower mold is not disturbed. The injection molding unit injects molten plastic material into the mold cavity after mold closing, forming an insulating shell, sheath, or sealing layer on the outside of the connector insert. After cooling and solidification, the mold closing drive unit drives the upper mold platen away from the lower mold platen to open the mold and remove the molded connector product. This solution provides a dedicated storage space for the cables led out by the connector insert by setting a cable delivery cavity on the support surface. This eliminates the risk of the cable swinging or shifting due to external forces during the injection molding process from a structural perspective, ensuring the positioning accuracy of the terminal body in the mold and the quality of injection molding.

[0009] Optionally, the injection molding section includes an injection tube and a heating plate. The upper mold platform has an injection port that communicates with the mold cavity. The injection tube is disposed on the upper mold platform. One end of the injection tube is connected to the injection port, and the other end is used to connect to an external molten plastic material supply end. The heating plate is disposed on the upper mold platform, and the heating surface of the heating plate is arranged facing the injection tube.

[0010] In the implementation of the above technical solution, during the entire injection molding process of the connector insert, the injection tube and heating plate, fixedly mounted on the upper mold platform, synchronously complete the reciprocating motion of mold closing and opening with the upper mold platform. They maintain a stable relative position at all times, and the heating surface of the heating plate continuously faces the injection tube, without any positional shift due to the mold closing action. During injection molding, the external molten plastic material supply end connects to the upper inlet of the injection tube. The molten plastic material flows downwards along the injection tube and is injected into the closed mold cavity through the injection port opened on the upper mold platform, completing the molding of the outer covering layer of the connector insert. During the process, the heating plate continuously releases heat towards the injection tube, which can be applied to the tube wall and the molten plastic material inside the tube through contact heat conduction or non-contact heat radiation. Continuous heat supply and insulation are implemented to prevent material temperature drops, viscosity increases, or even localized solidification due to heat dissipation from the pipeline. This ensures that the plastic material maintains uniform and stable flowability throughout the molding process, preventing blockage of the injection port and pipeline by cold material. At the same time, stable material temperature ensures uniform filling pressure and flow rate, reducing the probability of defects such as material shortage, weld lines, and uneven internal stress in the molded coating layer, and improving the appearance quality and structural density of the connector injection molded products. The structure of integrating the injection tube and heating plate on the upper mold stage ensures the reliable sealing and connection of the injection channel, and achieves synchronous follow-up of the heating position and the injection tube. The structure is compact and stable in operation, effectively ensuring the continuity of the batch injection molding production process and the consistency of product molding quality.

[0011] Optionally, the wire feeding cavity is through-hole shaped, so that the wire feeding cavity forms a first opening and a second opening on both sides of the lower mold platen, respectively. The first opening and the second opening are interconnected, thereby allowing the connector insert along with its cable to be pushed out through the first opening or the second opening after injection molding.

[0012] In the implementation of the above technical solution, during the injection molding process, the through-hole wire release cavity forms a first and second opening that are interconnected on both sides of the lower mold platen, providing continuous accommodating space for the cable led out by the connector insert, ensuring the stability of the cable position during injection molding. After injection molding is completed and the mold is opened, the connector insert, together with its cable, can be pushed out horizontally from the side of the lower mold platen through the first or second opening along the through extension direction of the wire release cavity. There is no need to lift the product and cable vertically upwards, thereby avoiding the risk of the cable being pulled and bent during vertical part removal, which could cause the terminal to shift and damage the injection molding coating. At the same time, it realizes flexible bidirectional part removal operation, which can be adapted to different production line layouts and automated material removal paths, effectively simplifying the part removal process, shortening the production cycle of a single station, and improving overall production efficiency and product molding yield.

[0013] Optionally, the lower mold platform includes a main support platform, an auxiliary support platform, and an adjustment drive component; the main support platform and the auxiliary support platform are spaced apart along a first direction, the first direction being perpendicular to the through direction of the wire feeding cavity and parallel to the plane where the support surface is located, the wire feeding cavity being formed between the main support platform and the auxiliary support platform; the main support platform is fixedly mounted on the frame, and the support surface is formed on the top surface of the main support platform; the auxiliary support platform is slidably mounted on the frame; the adjustment drive component is used to drive the auxiliary support platform to reciprocate along the first direction; the mold closing drive component is used to drive the upper mold platform to move in a direction closer to or farther from the main support platform and the auxiliary support platform.

[0014] In the implementation of the above technical solution, during the debugging stage before injection molding production begins, the driving component drives the auxiliary support platform to slide back and forth along the first direction, adjusting the interval between the auxiliary support platform and the main support platform fixed on the frame. This changes the width of the wire feeding cavity formed by the two. While retaining the function that the connector insert can be smoothly pushed out horizontally from the side of the lower mold platen through the first or second opening, the size of the wire feeding cavity is precisely matched with the cable diameter and product specifications of the connector insert currently being produced. At the same time, when the mold to be produced or the overall size of the connector insert is large, the position of the auxiliary support platform can be adjusted by sliding to correspond to the extension part of the mold, providing stable auxiliary support for large-sized molds and avoiding the large-sized mold from being tilted or shaking due to unilateral support, which would affect the production process. Precision of the mold; After debugging, the mold with the pre-installed connector insert is placed on the support surface of the top of the main support platform. The cable led out by the connector insert is naturally stored in the cable release cavity. The mold closing drive drives the upper mold platform to move in the direction close to the main support platform and the auxiliary support platform, so that the upper and lower molds can smoothly complete the mold closing action. The injection molding part injects molten plastic material into the closed mold cavity to complete the encapsulation molding. During the process, the adapted cable release cavity forms an effective circumferential limit for the cable, avoiding the cable from swinging displacement due to equipment vibration and melt impact, and ensuring the terminal positioning accuracy of the connector insert; After the injection molding cools and solidifies, the mold closing drive drives the upper mold platform to reset and open the mold. The molded connector insert, together with its cable, can be pushed out horizontally from the side of the lower mold platform along the through direction of the cable release cavity, through the first or second opening at both ends of the cable release cavity.

[0015] Optionally, the upper mold platform includes an injection mold platform and a mating mold platform. The injection unit is disposed on the injection mold platform, and the injection mold platform is vertically opposite to the main support platform. The mating mold platform is vertically opposite to the auxiliary support platform. The frame is provided with a first guide portion and a second guide portion extending along the mold closing direction. The first guide portion slides with the injection mold platform in the mold closing direction, and the second guide portion slides with the mating mold platform in the mold closing direction. The mold closing drive component is used to drive the injection mold platform to reciprocate in a direction approaching or away from the main support platform. The adjustment drive component is disposed on the injection mold platform.

[0016] In the implementation of the above technical solution, the upper mold platform is divided into two independent parts: an injection mold platform and a mating mold platform. The injection mold platform is equipped with an injection section and is positioned vertically opposite to the main support platform. The mating mold platform is positioned vertically opposite to the auxiliary support platform, forming a mirror-image layout with corresponding upper and lower sides. The frame is equipped with a first guide section and a second guide section extending along the mold closing direction (vertical direction). The first guide section slides with the injection mold platform to vertically guide the lifting and lowering movement of the injection mold platform. The second guide section slides with the mating mold platform to vertically guide the lifting and lowering movement of the mating mold platform. The mold closing drive component drives the injection mold platform to reciprocate in a direction approaching or moving away from the main support platform to achieve mold closing and opening. An adjustment drive component is set on the injection mold platform, and the movable end of the adjustment drive component is fixedly connected to the mating mold platform. The operation of the adjustment drive component can push and pull the mating mold platform. In this structure, the first guide section establishes a vertical motion connection between the injection mold table and the main support table—when the injection mold table moves up and down along the first guide section, its motion trajectory is always precisely aligned with the main support table; the second guide section establishes a vertical motion connection between the mating mold table and the auxiliary support table, and when the mating mold table moves up and down along the second guide section, its motion trajectory is always precisely aligned with the auxiliary support table. Simultaneously, since the movable end of the adjusting drive is fixedly connected to the mating mold table, when the adjusting drive operates, the mating mold table is driven to move horizontally in the direction closer to or further away from the injection mold table. Since a motion connection is established between the mating mold table and the auxiliary support table through the second guide section, the auxiliary support table is thus driven to move synchronously along the first direction, achieving synchronous adjustment of the width of the wire feeding cavity.

[0017] During the molding preparation stage, the operator adjusts the width of the wire feeding cavity according to the specifications of the current connector insert, and adjusts the drive component to move the mating mold platform horizontally in the direction closer to or further away from the injection mold platform. Since the mating mold platform and the auxiliary support platform are kinematically linked through the second guide, the auxiliary support platform moves synchronously in the first direction under the drive of the mating mold platform, changing the distance between the main support platform and the auxiliary support platform, thus adjusting the width of the wire feeding cavity. Simultaneously, the horizontal position of the mating mold platform and the horizontal position of the auxiliary support platform always correspond, laying the foundation for vertical alignment during subsequent mold closing. Once the width of the wire feeding cavity is adjusted to fit the current insert specifications, the operator places the connector insert along with the mold on the support surface of the main support platform and stores the cable into the wire feeding cavity. During the mold closing stage, the mold closing drive unit drives the injection mold stage to descend vertically along the first guide section, approaching the fixed main support platform to complete the mold closing on the main support side. The mating mold stage is connected to the injection mold stage through the adjustment drive unit and is driven to descend synchronously when the injection mold stage descends, sliding vertically along the second guide section to a position opposite to the auxiliary support platform, completing the mold closing on the auxiliary support side. Because the first guide section ensures the vertical alignment accuracy between the injection mold stage and the main support platform, and the second guide section ensures the vertical alignment accuracy between the mating mold stage and the auxiliary support platform, the mold closing actions on both sides are guided independently and performed synchronously. When the connector insert or mold spans above the wire feeding cavity, the injection mold stage and the mating mold stage apply uniform mold closing force to both sides of the mold from above, avoiding mold tilting or warping. During the injection stage, the injection unit injects molten plastic material into the mold cavity, and the cable remains stable within the appropriately sized wire feeding cavity. During the mold opening stage, the mold closing drive unit drives the injection mold stage to rise vertically along the first guide section. The mating mold stage rises synchronously with the injection mold stage and moves vertically away from the auxiliary support platform side along the second guide section, thus completing the mold opening. The molded connector insert, along with the cable, remains on the lower mold stage side and is pushed out horizontally from the side through the cable delivery cavity.

[0018] The injection mold platform and the main support platform, as well as the mating mold platform and the auxiliary support platform, are established with independent vertical guides by the first and second guides, ensuring that the upper and lower split structures maintain precise alignment during mold closing. The injection mold platform and the mating mold platform are then linked horizontally by the adjusting drive component. The operation of the adjusting drive component not only adjusts the horizontal position of the mating mold platform but also, through the movement of the second guide, drives the auxiliary support platform to move synchronously, achieving integrated adjustment of the width of the crimping cavity. In other words, a single extension or retraction movement of the adjusting drive component simultaneously completes the horizontal alignment of the mating mold platform and the position adjustment of the auxiliary support platform, ensuring that the corresponding structures on the upper and lower sides remain synchronized in the horizontal direction. This simplifies the adjustment operation while guaranteeing mold closing accuracy.

[0019] Optionally, the second guide portion includes a splined guide shaft extending along the mold closing direction, and the outer peripheral surface of the splined guide shaft is provided with spline teeth that pass through the axial direction of the splined guide shaft; the top end of the splined guide shaft is fixedly connected to the mating mold table, and a spline groove is provided on the auxiliary support table, the splined guide shaft passes through the spline groove, and the spline teeth mesh with the spline groove to form a sliding fit.

[0020] In the implementation of the above technical solution, during production changeover and mold closing operations, the splined guide shaft, whose top is fixed to the mating mold table, moves synchronously with the mating mold table. When the adjusting drive unit drives the mating mold table to move laterally in the first direction, the splined teeth evenly distributed on the outer circumference of the splined guide shaft and the splined grooves on the auxiliary support platform form a rigid force transmission fit with tooth surface meshing, directly driving the auxiliary support platform to slide synchronously in the first direction, accurately adjusting the distance between the main support platform and the auxiliary support platform to change the width of the wire feeding cavity, ensuring that the mating mold table and the auxiliary support platform maintain an upper and lower alignment throughout the process; when the mold closing drive unit drives the injection mold table to move the mating mold table along the mold closing direction... During the lifting motion, the splined guide shaft can slide relative to the spline groove along the axial direction, transmitting lateral driving force without interfering with the reciprocating motion in the mold closing direction. Furthermore, the circumferentially distributed spline teeth can form circumferential limits on the mating mold table and the auxiliary support table, preventing relative deflection and misalignment between the two. This structure integrates three major functions—lateral synchronous transmission, mold closing axial guidance, and circumferential anti-rotation limit—into a single splined guide shaft component, eliminating the lateral transmission gap present in ordinary optical shaft guide structures. This improves the alignment accuracy and motion stability of the split upper and lower mold synchronous adjustment, while simplifying the overall structure of the equipment and enhancing the reliability and accuracy retention life of long-term operation.

[0021] Optionally, an installation space is formed between the injection mold table and the mating mold table, and a flexible pusher block is provided in the installation space. In the mold closing state, the lower end of the flexible pusher block can extend into the wire release cavity.

[0022] In the implementation of the above technical solution, the injection mold table and the mating mold table are two independent platforms spaced apart along the first direction (horizontal direction), naturally forming an installation space between them. A flexible pusher block is installed within this installation space, extending towards the wire release cavity. Its extended end protrudes downwards from the installation space between the injection mold table and the mating mold table, pointing towards the area where the wire release cavity is located. The "flexible" characteristic of the flexible pusher block allows it to elastically deform upon contact with the cable or mold surface, preventing rigid compression damage to the cable insulation layer or mold surface. Simultaneously, its elastic recovery force applies a gentle and continuous pushing force to the cable.

[0023] During mold closing, the injection mold table moves synchronously towards the lower mold table, and the flexible pusher block, located in the installation space and extending towards the wire feeding cavity, moves down synchronously with the upper mold, gradually extending into the upper area of ​​the wire feeding cavity. This creates a gentle downward pressure on the cable stored in the wire feeding cavity, pressing any cables that may be raised or misaligned into their preset positions within the groove. This prevents the cables from protruding from the mold parting surface and being pinched during the mold closing action. At the same time, during the injection holding pressure stage, it provides upward displacement constraint on the cable. Combined with the circumferential limit of the wire feeding cavity, this further suppresses the upward movement and swaying of the cable caused by melt impact and equipment vibration, stabilizing and maintaining the terminal positioning accuracy of the connector insert. Furthermore, the flexible pusher block's flexibility avoids damage to the cable insulation layer caused by rigid pressing. It can adapt to cables of different diameters, and while retaining functions such as adjustable wire feeding cavity width and convenient side-push-out, it further improves cable protection and injection molding yield.

[0024] Optionally, it also includes a guide seat and a positioning seat, the guide seat and the positioning seat being respectively disposed on the mating mold table and the injection mold table. The guide seat is provided with a plurality of guide grooves spaced apart along a first direction. The guide grooves are waist-shaped grooves and the groove length of the guide grooves extends along the first direction. The positioning seat is movably provided with a positioning rod and a positioning drive is provided on the positioning seat. The positioning drive is used to drive the positioning rod to be inserted into any of the guide grooves.

[0025] In the implementation of the above technical solution, during the production changeover and debugging phase, the adjusting drive first drives the mating mold table to slide along the first direction, and simultaneously drives the auxiliary support table to move through the second guide part, adjusting the width of the wire feeding cavity to approximately the position that matches the current connector insert specification. Subsequently, the positioning drive on the positioning seat drives the positioning rod to extend and insert into the guide groove of the corresponding position on the guide seat, completing the coarse positioning and locking of the width position. After entering the batch injection molding cycle, during a single mold closing process, the adjusting drive can continue to drive the mating mold table to slide slightly closer along the first direction. At this time, the positioning rod slides relative to the guide in the waist-shaped guide groove along the length of the groove. The two end walls of the guide groove form boundary restrictions on the sliding stroke. The mating mold table simultaneously drives the auxiliary support table to move slightly closer, adjusting the width of the wire feeding cavity. The cable is positioned by lateral compression, further constraining its radial movement. During mold opening, the adjusting drive unit slightly resets the mating mold, releasing the lateral compression of the cable and facilitating the ejection of the connector insert along with the cable from the side opening. Multiple-positioned guide grooves allow for rapid product changeover positioning for different specifications, preventing significant deviations in the cable discharge cavity width during mass production. The stroke allowance of the waist-shaped groove enables micro-cable compression during mold closing, improving cable positioning reliability and precisely limiting the compression stroke through the guide grooves to prevent excessive compression and damage to the cable insulation. While maintaining the versatility of adjustable cable discharge cavity width and convenient side-push-out, this design further enhances the positioning stability of the cable and the product molding yield during injection molding.

[0026] Optionally, the positioning seat is provided with a mounting sleeve, the axis of the mounting sleeve is perpendicular to the first direction, the positioning rod passes through the mounting sleeve and forms a sliding fit; the positioning drive component includes a first drive spring disposed in the mounting sleeve, the two ends of the first drive spring being connected to the positioning rod and the positioning seat respectively.

[0027] In the implementation of the above technical solution, during the gear adjustment and injection molding process of the equipment, the mounting sleeve on the positioning seat provides sliding support and motion guidance for the positioning rod along the insertion direction. The elastic extension direction of the first drive spring is consistent with the axial direction of the mounting sleeve. Under normal conditions, the first drive spring pushes the positioning rod along the mounting sleeve towards the guide seat side through elastic restoring force, keeping the positioning rod in a locked state inserted into the corresponding guide groove. This provides a continuous and stable elastic locking force for the width gear of the wire feeding cavity, effectively preventing the positioning rod from accidentally dislodging and shifting gear due to equipment vibration and mold closing impact. When performing coarse width adjustment for production change, press the positioning rod to disengage it from the guide groove, and push the positioning rod into the mounting sleeve. The system automatically retracts gears. When the guide seat or positioning seat moves to the guide groove of the target gear and aligns with the positioning rod, the first drive spring pushes the positioning rod to extend and insert into the guide groove, completing the automatic positioning and locking of the gear. Smooth gear switching and reliable locking can be achieved without additional active control components. In the single mold closing process of mass production, the guide seat or positioning seat on the mold table performs micro-sliding to press the cable. At this time, the positioning rod slides relative to the length of the waist-shaped guide groove. The first drive spring always maintains the insertion state of the positioning rod, ensuring that the stroke of the micro-sliding is precisely limited within the length of the guide groove. This does not interfere with the cable pressing action and eliminates the risk of gear shifting.

[0028] Optionally, a slot is provided on the guide seat along the first direction, and a magnetic plate is detachably disposed in the slot. A magnetic block is provided at one end of the positioning rod facing the guide groove. When the magnetic plate is inserted into the slot, the magnetic plate and the magnetic block are arranged opposite to each other, and the magnetic poles on the opposite side of the magnetic plate and the magnetic block are the same.

[0029] In the implementation of the above technical solution, during the coarse adjustment of the width for production changeover, the magnetic plate is inserted into the slot opened along the first direction of the guide seat through the opening, so that the magnetic plate and the magnetic block at the insertion end of the positioning rod are arranged facing each other with the same poles opposite each other. At this time, the repulsive force between the magnetic plate and the magnetic block applies an auxiliary retraction force along the axial direction of the positioning rod, and the positioning rod overcomes the elastic force of the first drive spring and retracts smoothly into the mounting sleeve. At the same time, the guide seat moves along the first direction, and the side wall of the guide groove applies a lateral component force to the end of the positioning rod. The smoothness of switching between multiple width adjustment positions is thus improved, and the risk of extrusion wear and jamming between the positioning rod and the side wall of the guide groove during position switching is reduced. After the coarse width adjustment is completed and the position is positioned, The magnetic plate can be removed from the slot, eliminating the reverse effect of magnetic repulsion on the locking state. This allows the positioning rod to be inserted into the corresponding guide groove by the elastic force of the first drive spring and maintain a stable insertion and locking state, avoiding long-term reverse repulsion that weakens the locking reliability. At the same time, the magnetic plate can be flexibly added or removed according to the frequency of production changeover and adjustment needs, realizing the shifting assistance function as needed. While ensuring the stability of cable positioning and the reliability of gear locking during batch injection molding, it greatly improves the flexibility and adaptability of production changeover and debugging operations. Moreover, the detachable magnetic plate structure does not require modification of the main structure of the original spring positioning mechanism to realize the shifting assistance function, resulting in low structural modification cost and high flexibility of use.

[0030] In summary, this application includes at least one of the following beneficial technical effects: 1. The cable delivery cavity provides a dedicated storage space for the cable, restricting radial sway of the cable, ensuring terminal positioning accuracy, and improving injection molding quality; 2. It adopts a double-sided through-cavity structure to support side-push component removal, avoiding damage to the product caused by pulling the cable when removing components vertically, and is also compatible with different production line layouts. 3. The split upper and lower molds are linked and adjustable, which can flexibly adapt to products with different wire diameters and specifications. At the same time, it provides uniform support and mold closing pressure for large-size molds, avoiding mold warping and overflow. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a connector injection molding equipment according to embodiments 1 and 2 of this application; Figure 2 yes Figure 1 Side view; Figure 3 yes Figure 2 A schematic diagram below section AA; Figure 4 This is a schematic diagram of the overall structure of a connector injection molding equipment according to embodiments 3-7 of this application; Figure 5 yes Figure 4 A sectional side view; Figure 6 yes Figure 5 Front view in the current state; Figure 7 This is a cross-sectional side view of the flexible pusher block in Embodiment 5 of this application; Figure 8 This is a schematic diagram of the cooperation between the positioning seat and the guide seat in embodiments 6 and 7 of this application; Figure 9 yes Figure 8 A cross-sectional diagram.

[0032] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Upper mold platform; 21. Injection mold platform; 22. Mating mold platform; 23. Installation space; 3. Lower mold platform; 31. Main support platform; 32. Auxiliary support platform; 33. Support surface; 34. Wire feeding cavity; 341. First opening; 342. Second opening; 4. Injection section; 41. Injection tube; 42. Heating plate; 43. Injection port; 44. Connecting tube; 45. Injection nozzle; 5. Mold closing drive component; 51. Hydraulic cylinder; 6. Adjustment drive component; 61. Hydraulic rod; 7. First guide section; 71. Guide optical axis; 72. Guide 8. Hole; 9. Second guide section; 10. Splined guide shaft; 11. Splined teeth; 12. Splined groove; 13. Flexible push block; 14. Flexible block; 15. Telescopic rod; 16. Second drive spring; 17. Guide seat; 18. Guide groove; 19. First rounded chamfer; 10. Slot; 11. Positioning seat; 12. Positioning rod; 113. Second rounded chamfer; 114. Mounting sleeve; 12. Positioning drive component; 13. First drive spring; 14. Magnetic plate; 15. Magnetic block; 16. Horizontal slide; 17. Limiting slide; 18. Flexible protective pad. Detailed Implementation

[0033] The following combination Figures 1-9 This application will be described in further detail.

[0034] Example 1

[0035] This embodiment 1 discloses a connector injection molding equipment, which can injection mold connector inserts with cables. By opening a cable release cavity 34 on the support surface 33 of the lower mold platen 3, a dedicated storage space is provided for the cables pre-connected to the connector insert. This solves the technical problem that the cable swings or shifts due to the pressure of the injection block, the action of the hydraulic cylinder, or the force on the workpiece itself during the injection molding process, thereby affecting the positioning state of the terminal body in the mold. This ensures the positioning accuracy of the terminal and the injection molding quality.

[0036] Reference Figures 1-3 The connector injection molding equipment includes a frame 1, an upper mold platform 2, a lower mold platform 3, and a mold closing drive component 5.

[0037] Reference Figures 1-3The frame 1 serves as the overall mounting base for the equipment, providing mounting support for all moving and functional components. The upper mold platform 2 is mounted on the frame 1, above the lower mold platform 3. The lower mold platform 3 is mounted on the frame 1 and positioned opposite the upper mold platform 2. The top surface of the lower mold platform 3 forms a support surface 33. The support surface 33 is horizontal. The support surface 33 is used to support the mold in which the connector insert is placed.

[0038] Reference Figures 1-3 A cable delivery cavity 34 is provided on the supporting surface 33. The cable delivery cavity 34 is used to receive the cable led out from the connector insert placed in the mold. The width of the cable delivery cavity 34 is greater than the outer diameter of the cable. The depth of the cable delivery cavity 34 is not less than the outer diameter of the cable. The inner wall surface of the cable delivery cavity 34 is smooth. The inner wall of the cable delivery cavity 34 has a rounded corner transition structure. The rounded corner transition structure avoids the risk of sharp edges scratching the cable insulation layer.

[0039] Reference Figures 1-3 The mold closing drive component 5 is a hydraulic cylinder 51. The cylinder body of the hydraulic cylinder 51 is fixedly mounted on the top crossbeam of the frame 1. The piston rod of the hydraulic cylinder 51 extends vertically downward. The lower end of the piston rod is fixedly connected to the top surface of the upper mold platform 2. The hydraulic cylinder 51 is connected to an external hydraulic station. The hydraulic station supplies pressurized oil to the hydraulic cylinder 51. When the hydraulic station supplies oil to the rodless chamber of the hydraulic cylinder 51, the piston rod extends, and the upper mold platform 2 moves downward in the direction closer to the lower mold platform 3, completing the mold closing action. When the hydraulic station supplies oil to the rod chamber of the hydraulic cylinder 51, the piston rod retracts, and the upper mold platform 2 moves upward in the direction away from the lower mold platform 3, completing the mold opening action. The movement speed and stroke of the piston rod of the hydraulic cylinder 51 can be adjusted and controlled by the flow valve and limit switch of the hydraulic station.

[0040] Reference Figures 1-3 An injection unit 4 is provided on the upper mold platen 2. The injection unit 4 includes an injection tube 41 and a heating plate 42. An injection port 43 is provided on the upper mold platen 2. The injection port 43 communicates with the mold cavity. The injection tube 41 is located on the top surface of the upper mold platen 2. The injection tube 41 is arranged vertically. One end of the injection tube 41 is connected to a connecting pipe 44, and the other end is provided with an injection nozzle 45. The injection nozzle 45 is located inside the injection port 43. The connecting pipe 44 is used to connect to the external molten plastic material supply end. The external supply end is the injection unit of the injection molding machine. Molten plastic material enters the connecting pipe 44 from the injection unit, flows through the connecting pipe 44 into the injection tube 41, and then flows into the closed mold cavity through the injection nozzle 45.

[0041] Reference Figures 1-3 In this embodiment, the two ends of the injection tube 41 are connected to the injection port 43 and the external molten plastic material supply end through the injection nozzle 45 and the connecting pipe 44, respectively, thereby further improving the stability of the injection molding process.

[0042] Reference Figures 1-3A heating plate 42 is mounted on the upper mold platform 2. The heating plate 42 is located beside the injection molding tube 41. The heating surface of the heating plate 42 faces the injection molding tube 41. A predetermined distance is maintained between the heating plate 42 and the injection molding tube 41. The heating plate 42 continuously heats and maintains the temperature of the tube wall and the molten plastic material inside the injection molding tube 41 through non-contact heat radiation. The heating temperature of the heating plate 42 can be adjusted by a temperature control system, and a power supply unit for supplying power to the heating plate 42 is mounted on the frame 1.

[0043] During injection molding, the operator places the mold on the support surface 33 of the lower mold platen 3. A connector insert is pre-placed in the mold cavity. A cable is pre-attached to the connector insert. After being led out from the connector insert, the cable is collected in the cable release cavity 34 on the support surface 33. The cable extends naturally within the cable release cavity 34, no longer hanging or scattering in the mold closure area above the support surface 33.

[0044] During the mold closing stage, the hydraulic station supplies oil to the rodless chamber of the hydraulic cylinder 51, causing the piston rod to extend. The upper mold platform 2 moves downwards towards the lower mold platform 3, and the upper and lower molds close to form a complete cavity. During the mold closing process, the cable is already housed in the cable release chamber 34. The cable is outside the mold closing area. The cable will not swing or shift due to vibrations generated by the movement of the hydraulic cylinder 51 or the impact force of the downward pressure of the upper mold platform 2. The positioning of the terminal body on the connector insert within the mold remains undisturbed.

[0045] During the injection molding stage, the injection unit delivers molten plastic material into the injection tube 41. The material flows into the mold cavity through the injection nozzle 45. The heating plate 42 continuously heats the injection tube 41. The temperature of the molten plastic material inside the tube remains uniform and stable. The material will not experience a temperature drop or localized solidification due to heat dissipation from the tube. The molten plastic material uniformly coats the outside of the connector insert to form an insulating shell, sheath, or sealing layer.

[0046] During the pressure holding and cooling stage, the molten plastic material in the cavity completes the shrinkage under pressure, and then cools and solidifies.

[0047] During the mold opening stage, the hydraulic station supplies oil to the rod chamber of the hydraulic cylinder 51, the piston rod retracts, the upper mold platform 2 moves upward away from the lower mold platform 3, the upper mold and the lower mold separate, and the finished connector can be taken out from the mold.

[0048] By providing a cable delivery cavity 34 on the support surface 33 of the lower mold platen 3, a dedicated storage space is provided for the cable led out from the connector insert. This structurally eliminates the potential for cable swaying or displacement during injection molding due to the pressure of the injection block, the action of the hydraulic cylinder, or the force exerted on the workpiece itself. It solves the technical problem of cable displacement affecting the positioning of the terminal body in the mold, ensuring the positioning accuracy of the terminal and the quality of injection molding. The injection tube 41 and the heating plate 42 are integrated on the upper mold platen 2. During mold closing and opening, both move synchronously with the upper mold platen 2. The heating plate 42 always faces the injection tube 41, continuously replenishing and maintaining the temperature of the molten plastic material inside the tube. This avoids the risk of material temperature drop or solidification due to heat dissipation from the tube, ensuring the consistency of injection molding quality.

[0049] Example 2

[0050] This embodiment optimizes the structure of the wire feeding cavity 34 based on embodiment 1, and adopts a double-sided through-hole design to realize the side horizontal ejection of the molded product, avoiding damage to the product by pulling the cable when picking up the part vertically, while adapting to different production line layouts.

[0051] Reference Figures 1-3 The wire feeding cavity 34 is through-hole oriented, extending horizontally through the opposite side walls of the lower mold platform 3. The wire feeding cavity 34 forms a first opening 341 and a second opening 342 on each side of the lower mold platform 3. The first opening 341 and the second opening 342 are interconnected, together forming a through channel through which cables and products can pass.

[0052] In the mold opening and component removal scenario, the operator can push the formed connector insert, causing the cable to move along the through direction of the cable release cavity 34. The connector insert, along with the cable, can be moved horizontally out from the side of the lower mold stage 3 through the first opening 341 or the second opening 342, without needing to lift the product upwards.

[0053] The bidirectional opening design can adapt to production line layouts with different orientations. Operators can choose the discharge direction according to the workshop layout, or it can be used in conjunction with automated robotic arms to achieve side receiving.

[0054] The through-type wire feeding cavity 34 structure solves the problem of product damage caused by pulling during vertical part removal. It also supports bidirectional part removal, improving the flexibility of part removal operations and product yield.

[0055] Example 3

[0056] This embodiment adopts a split upper and lower mold structure, which can flexibly adjust the width of the wire feeding cavity 34 to adapt to different product specifications. At the same time, it provides auxiliary support for large-size molds, ensures uniform force when the mold is closed, and improves the versatility and adaptability of the equipment.

[0057] Reference Figures 4-6The lower die stage 3 includes a main support stage 31, an auxiliary support stage 32, and an adjustment drive component 6. The main support stage 31 is fixedly mounted on the frame 1. A support surface 33 is formed on the top surface of the main support stage 31. The auxiliary support stage 32 is horizontally slidably mounted on the frame 1. The main support stage 31 and the auxiliary support stage 32 are spaced apart along a first direction (horizontal direction). A wire feeding cavity 34 is formed between the main support stage 31 and the auxiliary support stage 32.

[0058] Reference Figures 4-6 The upper mold platform 2 includes an injection mold platform 21 and a mating mold platform 22. The injection molding part 4 is disposed on the injection mold platform 21. The injection mold platform 21 and the main support platform 31 are arranged vertically opposite each other. The mating mold platform 22 and the auxiliary support platform 32 are arranged vertically opposite each other. The vertical correspondence between the injection mold platform 21 and the mating mold platform 22 is consistent with the vertical correspondence between the main support platform 31 and the auxiliary support platform 32.

[0059] Reference Figures 4-6 The frame 1 is provided with a first guide portion 7 and a second guide portion 8. The first guide portion 7 extends along the mold closing direction (vertical direction). The first guide portion 7 slides in conjunction with the injection mold table 21 in the mold closing direction. The first guide portion 7 guides the lifting and lowering movement of the injection mold table 21 to ensure the alignment accuracy between the injection mold table 21 and the main support table 31. The second guide portion 8 extends along the mold closing direction. The second guide portion 8 slides in conjunction with the mating mold table 22 in the mold closing direction. The second guide portion 8 guides the lifting and lowering movement of the mating mold table 22 to ensure the alignment accuracy between the mating mold table 22 and the auxiliary support table 32.

[0060] Reference Figures 4-6 An installation space 23 is formed between the injection mold base 21 and the mating mold base 22. The adjusting drive component 6 includes a hydraulic rod 61 disposed within the installation space 23, arranged along a first direction (horizontal direction). The rod body of the hydraulic rod 61 is fixedly connected to the injection mold base 21. The output end (piston rod) of the hydraulic rod 61 is drively connected to the mating mold base 22. The hydraulic rod 61 is connected to an external hydraulic station. When the piston rod of the hydraulic rod 61 extends, the mating mold base 22 slides away from the injection mold base 21 along the first direction. When the piston rod of the hydraulic rod 61 retracts, the mating mold base 22 slides towards the injection mold base 21 along the first direction.

[0061] Reference Figures 4-6A horizontal slide 14 is fixed on the frame 1, and a limiting slide 141 is fixed on the horizontal slide 14. The bottom side of the auxiliary support platform 32 is attached to the horizontal slide 14 and slides with the horizontal slide 14. The top side of the auxiliary support platform 32 is attached to the limiting slide 141 and slides with the limiting slide 141. Through the joint cooperation of the horizontal slide 14 and the limiting slide 141, the movement direction of the auxiliary support platform 32 on the frame 1 is restricted, so that the vertical movement freedom of the auxiliary support platform 32 is restricted. The auxiliary support platform 32 can slide horizontally in the direction of approaching or moving away from the main support platform 31, so as to avoid the auxiliary support platform 32 from being driven to produce synchronous vertical displacement when the mold table 22 moves vertically.

[0062] When the hydraulic rod 61 operates, the mating mold base 22 is driven to move horizontally towards or away from the injection mold base 21. A motional connection is established between the mating mold base 22 and the auxiliary support platform 32 via the second guide portion 8. The horizontal movement of the mating mold base 22 drives the auxiliary support platform 32 to move synchronously along a first direction via the second guide portion 8. The horizontal position of the mating mold base 22 and the horizontal position of the auxiliary support platform 32 always remain corresponding.

[0063] During the molding preparation stage, the operator activates the hydraulic rod 61 according to the specifications of the connector insert. When the connector insert is large and the cable diameter is thick, the hydraulic rod 61 pushes the auxiliary support platform 32 to slide away from the main support platform 31, increasing the width of the cable delivery cavity 34 to accommodate the thicker cable. When the connector insert is small and the cable diameter is thin, the hydraulic rod 61 pushes the auxiliary support platform 32 to slide closer to the main support platform 31, reducing the width of the cable delivery cavity 34 to better constrain the thinner cable. The width of the cable delivery cavity 34 is always not less than the maximum outer dimension of the molded part to ensure that the molded part can be pushed out horizontally from the side.

[0064] When the connector insert or mold is large in size and spans above the wire feeding cavity 34, the hydraulic rod 61 operates to adjust the auxiliary support platform 32 to the appropriate position. The auxiliary support platform 32 provides auxiliary support for the spanned portion of the mold. The auxiliary support platform 32 prevents the mold from sagging or tilting due to its large span.

[0065] After adjusting the width of the cable release cavity 34, the operator places the connector insert along with the mold on the support surface 33 of the main support platform 31. The cable is then stored inside the cable release cavity 34. During the mold closing stage, the hydraulic cylinder 51 drives the injection mold platform 21 to descend vertically along the first guide section 7. With the linkage of the hydraulic rod 61, the mating mold platform 22 descends synchronously with the injection mold platform 21 and slides vertically along the second guide section 8 to approach the auxiliary support platform 32. The injection mold platform 21 and the mating mold platform 22 apply uniform mold closing force from above to the main support platform 31 side and the auxiliary support platform 32 side of the mold, respectively. Large-sized molds will not tilt or warp due to force applied to one side.

[0066] By adjusting the drive component 6 (hydraulic rod 61), the mating mold platform 22 is driven to slide back and forth, thereby sliding the auxiliary support platform 32 to change the width of the wire feeding cavity 34 from a fixed parameter to an adjustable variable. One machine can accommodate the injection molding requirements of various specifications of connector inserts without changing the lower mold platform 3, and the size of the wire feeding cavity 34 can be precisely adapted to different production needs while retaining the side horizontal ejection function of the molded part. The upper mold platform 2 is divided into an injection mold platform 21 and a mating mold platform 22, forming an upper and lower mirror layout with the main support platform 31 and the auxiliary support platform 32 of the lower mold platform 3. The mold closing on both sides is independently guided and carried out synchronously, ensuring the mold closing accuracy. The mating mold platform 22 is linked to the auxiliary support platform 32 through the second guide part 8 to move horizontally synchronously, ensuring that the corresponding structures on the upper and lower sides remain aligned and consistent during the adjustment process.

[0067] Example 4

[0068] Reference Figures 4-6 This embodiment further optimizes the structure of the second guide section 8, and uses a splined guide shaft 81 to integrate the transmission and guiding functions, eliminate the lateral transmission gap, and improve the alignment accuracy and operational reliability of the split structure synchronous adjustment.

[0069] Reference Figures 4-6 The first guide section 7 includes a guide shaft 71, which extends along the mold closing direction (vertical direction). The bottom end of the guide shaft 71 is fixedly connected to the frame 1. A guide hole 72 is provided on the main support platform 31, and the lower end of the guide shaft 71 passes through the guide hole 72. A guide through hole is provided on the injection mold platform 21, and the guide shaft 71 passes through the guide through hole, forming a sliding fit with the injection mold platform 21, providing vertical guidance for the lifting and lowering movement of the injection mold platform 21.

[0070] Reference Figures 4-6 The second guide section 8 includes a splined guide shaft 81, which extends along the mold closing direction (vertical direction). Splined teeth 82 are provided on the outer circumferential surface of the splined guide shaft 81, and are arranged axially along the splined guide shaft 81. Each splined tooth 82 is evenly distributed circumferentially along the splined guide shaft 81.

[0071] Reference Figures 4-6 The top end of the spline guide shaft 81 is fixedly connected to the mating mold table 22; a horizontal through groove extending along the first direction is provided on the frame 1, and the lower end of the spline guide shaft 81 passes through the horizontal through groove, forming a sliding fit with the horizontal through groove along the first direction; a spline groove 83 is provided on the auxiliary support table 32, and the inner contour of the spline groove 83 is adapted to the outer contour of the spline guide shaft 81.

[0072] Reference Figures 4-6The splined guide shaft 81 passes through the spline groove 83. The spline teeth 82 mesh with the spline groove 83 to form a sliding fit. The splined guide shaft 81 can slide relative to the spline groove 83 along its own axial direction, and the two can also transmit the lateral driving force in the first direction through the meshing of the tooth surfaces.

[0073] When adjusting the width of the wire feeding cavity 34, the spline guide shaft 81 is moved along the first direction by the mold table 22. The rigid meshing of the spline teeth 82 and the spline groove 83 drives the auxiliary support table 32 to move synchronously. There is no gap in the transmission process, and the upper and lower molds are accurately aligned.

[0074] During the mold closing motion, the spline guide shaft 81 slides axially along the spline groove 83, without interfering with the mold closing and lifting action. The circumferentially uniform spline teeth 82 can limit the relative rotation between the mating mold table 22 and the auxiliary support table 32, avoiding structural sway.

[0075] By integrating lateral transmission and axial guidance functions through the splined guide shaft 81, the problems of large transmission clearance and low alignment accuracy in ordinary guide structures are solved. This improves the operating accuracy and service life of the split structure.

[0076] Example 5

[0077] This embodiment adds a flexible pusher block 9 structure, which automatically presses down and straightens the cable when the mold is closed, preventing the cable from protruding from the parting surface and being pinched. At the same time, it enhances the positioning stability of the cable and improves the product yield.

[0078] Reference Figures 4-7 The side walls of the injection mold 21 and the mating mold 22 enclose each other to form an installation space 23. The installation space 23 provides space for the internal functional components.

[0079] Reference Figures 4-7 A flexible push-line block 9 is provided within the installation space 23. In this embodiment, flexible push-line blocks 9 are provided on both the injection mold table 21 and the mating mold table 22 on opposite sides.

[0080] Reference Figures 4-7 Each set of flexible push-line blocks 9 includes a telescopic rod 92 (horizontally set) and a flexible block 91. One end of the telescopic rod 92 is fixedly connected to the side wall of the corresponding injection mold table 21 or mating mold table 22, and the other end of the telescopic rod 92 is fixedly connected to the flexible block 91.

[0081] Reference Figure 7 The telescopic rod 92 is equipped with a second drive spring 93 (horizontally positioned), which is a compression spring. The second drive spring 93 is used to drive the flexible block 91 to maintain its tendency to move away from the corresponding telescopic rod 92. Under the action of the second drive spring 93, the two opposing flexible blocks 91 are in contact with each other and always remain in the middle position of the installation space 23.

[0082] The flexible block 91 is made of an elastic material and has deformability. The lower end of the flexible block 91 extends toward the wire feeding cavity 34. In the mold-closed state, the lower end of the flexible push block 91 extends into the wire feeding cavity 34.

[0083] In the mold closing operation scenario, the upper mold table 2 drives the flexible pusher block 9 to move downwards synchronously. The lower end of the flexible block 91 first contacts the cable in the cable feeding cavity 34, applies a gentle downward pressure to the cable, and presses the raised cable into the preset position.

[0084] The flexible block 91 can undergo elastic deformation under the reaction force of the cable, and in conjunction with the telescopic rod 92, it adapts to cables of different diameters without damaging the cable insulation layer.

[0085] When the width of the installation space 23 changes with the adjustment of the wire feeding cavity 34, the telescopic rod 92 can automatically extend and retract with the change of spacing, ensuring that the flexible block 91 is always in the middle of the installation space 23, and adapting to different width levels.

[0086] The adaptive flexible push block 9 structure solves the problem of cables being easily damaged by mold clamping when they warp. This further enhances the cable positioning effect and improves production yield.

[0087] Example 6

[0088] This embodiment adds a gear positioning mechanism to achieve multi-gear coarse positioning and micro-pressing of the 34-width cable feeding cavity, avoiding gear shifting during mass production, and ensuring controllable cable pressing stroke.

[0089] Reference Figures 4-9 The connector injection molding equipment also includes a guide seat 10 and a positioning seat 11 arranged opposite to each other. The guide seat 10 extends along a first direction (horizontal direction), one end of the guide seat 10 is fixed to the top of the mating mold table 22, and the other end is attached to the top of the injection mold table 21 and slides with the injection mold table 21. The positioning seat 11 is fixed to the top of the injection mold table 21.

[0090] Reference Figure 8 and Figure 9 The guide seat 10 is provided with multiple guide grooves 101 spaced apart along the first direction. The guide grooves 101 are waist-shaped grooves, and the length of the guide grooves 101 extends along the first direction. The multiple guide grooves 101 correspond to different width settings of the wire feeding cavity 34.

[0091] Reference Figure 8 and Figure 9 A positioning rod 111 is movably mounted on the positioning base 11. The direction of movement of the positioning rod 111 is perpendicular to the first direction. A positioning drive 12 is mounted on the positioning base 11. The positioning drive 12 is used to drive the positioning rod 111 to insert into any guide groove 101.

[0092] Reference Figure 8 and Figure 9 A mounting sleeve 113 is fixedly mounted on the positioning seat 11. The axis of the mounting sleeve 113 is perpendicular to the first direction. The positioning rod 111 passes through the mounting sleeve 113, and the positioning rod 111 and the mounting sleeve 113 form a sliding fit. The mounting sleeve 113 provides sliding support and movement guidance for the positioning rod 111. During the sliding process of the positioning rod 111, its end is always located within the mounting sleeve 113. The mounting sleeve 113 ensures the movement accuracy of the positioning rod 111 during repeated insertion and disengagement, and avoids pin failure or wear of the guide groove 101 caused by the wobble of the positioning rod 111.

[0093] Reference Figure 8 and Figure 9 The positioning drive component 12 includes a first drive spring 121. The first drive spring 121 is a compression spring and is housed within the mounting sleeve 113. The elastic extension and contraction direction of the first drive spring 121 is consistent with the axial direction of the mounting sleeve 113, and the first drive spring 121 is horizontally positioned.

[0094] Reference Figure 8 and Figure 9 One end of the first drive spring 121 is fixedly connected to the end of the positioning rod 111, and the other end of the first drive spring 121 is fixedly connected to the positioning seat 11. Under normal conditions, the first drive spring 121 pushes the positioning rod 111 to extend towards the guide seat 10 and insert it into the corresponding guide groove 101 to achieve gear locking.

[0095] Reference Figure 8 and Figure 9 The guide groove 101 has a first arc chamfer 102 on the side facing the positioning rod 111, and the positioning rod 111 has a second arc chamfer 112 on the end facing the guide groove 101. The cooperation of the first arc chamfer 102 and the second arc chamfer 112 improves the smoothness of the docking between the positioning rod 111 and the guide groove 101. Flexible protective pads 15 are fixed on the side walls of the main support platform 31 and the auxiliary support platform 32 on opposite sides. The flexible protective pads 15 are located inside the wire feeding cavity 34.

[0096] During the changeover and commissioning phase, the operator activates the adjustment drive 6 (hydraulic rod 61) to slide the mating mold 22 along the first direction, according to the current connector insert specifications. The mating mold 22 drives the auxiliary support 32 to move synchronously via the second guide part 8 (spline guide shaft 81). The width of the wire feeding cavity 34 is adjusted to approximately the position matching the current connector insert specifications. At this time, the guide seat 10 moves to the corresponding position with the mating mold 22. The guide groove 101 is approximately aligned with the positioning rod 111. The first drive spring 121 pushes the positioning rod 111 to extend. The positioning rod 111 inserts into the corresponding guide groove 101. The horizontal relative position between the mating mold 22 and the injection mold 21 is locked within the approximate range corresponding to this position.

[0097] After entering the batch injection molding cycle, during a single mold closing process, the adjusting drive component 6 can continue to drive the mating mold table 22 to slide slightly closer along the first direction. The positioning rod 111 slides relative to the guide groove 101 along the length of the groove. The groove walls at both ends of the guide groove 101 form boundary restrictions on the sliding stroke. The mating mold table 22 synchronously drives the auxiliary support table 32 to move slightly closer to the main support table 31. The local width of the wire feeding cavity 34 is reduced. The cable in the wire feeding cavity 34 is constrained by the pressure of the main support table 31 and the auxiliary support table 32 on both sides. The cable no longer has the space to swing or move.

[0098] During mold opening, the adjusting drive 6 slightly resets the mating mold platform 22. The auxiliary support platform 32 moves slightly away from the main support platform 31. The local width of the wire feeding cavity 34 is restored. The cable compression is released. The molded connector insert, along with the cable, is smoothly pushed out from the side of the wire feeding cavity 34.

[0099] The multi-stage, spaced guide grooves 101 enable rapid product changeover positioning for products of different specifications. The stroke allowance of the waist-shaped groove facilitates micro-cable pressing during mold closing, improving cable positioning reliability and precisely limiting the pressing stroke through the guide grooves 101 to avoid the risk of excessive pressing damaging the cable insulation. The cooperation between the first drive spring 121 and the mounting sleeve 113 forms a spring-return automatic pin mechanism for the positioning rod 111, automatically locking during mold closing and automatically releasing during mold opening. Smooth switching and reliable locking of the gear positions can be achieved without additional electrical control.

[0100] Example 7

[0101] This embodiment adds a pluggable magnetic repulsion auxiliary structure, which reduces the resistance of gear switching and reduces component wear during production changeover and debugging. During production, the magnetic plate 13 can be removed to ensure locking reliability, and the usage method is flexible and adjustable.

[0102] Reference Figure 8 and Figure 9 The guide seat 10 has a slot 103. The slot 103 extends along the first direction, and the top of the slot 103 penetrates the top wall of the guide seat 10 to form an insertion opening. When the positioning rod 111 is inserted into the guide groove 101, the second arc chamfer 112 is located at the position where the slot 103 and the guide groove 101 communicate.

[0103] Reference Figure 8 and Figure 9 A magnetic plate 13 is detachably disposed within the slot 103. The magnetic plate 13 can be inserted into the slot 103 through the insertion opening, or it can be pulled out and removed from the slot 103.

[0104] Reference Figure 8 and Figure 9A magnetic block 131 is fixedly mounted on one end of the positioning rod 111 facing the guide groove 101. When the magnetic plate 13 is inserted into the slot 103, the magnetic plate 13 and the magnetic block 131 are arranged facing each other. The magnetic poles on the opposite side of the magnetic plate 13 and the magnetic block 131 are the same, and a repulsive force is generated between them.

[0105] When shifting gears using the existing spring positioning structure, the positioning rod 111 and the side wall of the guide groove 101 experience high frictional resistance due to compression. This leads to severe wear and tear over long-term use, and the structure is prone to jamming.

[0106] In the scenario of coarse adjustment of width during production changeover, the operator inserts the magnetic plate 13 into the slot 103. The repulsive force between the magnetic plate 13 and the magnetic block 131 acts axially along the positioning rod 111, assisting in pushing the positioning rod 111 back into the mounting sleeve 113.

[0107] When the adjustment drive 6 operates to drive the guide seat 10 to move horizontally, the positioning rod 111 can exit from the guide groove 101 more smoothly, reducing the extrusion wear of the mating surface and improving the smoothness of gear shifting.

[0108] After the coarse adjustment is completed, the operator can pull the magnetic plate 13 out of the slot 103. The magnetic repulsion disappears, and the positioning rod 111 is maintained in the locked state only by the elastic force of the first drive spring 121, avoiding long-term reverse repulsion from weakening the locking reliability.

[0109] In production scenarios with low changeover frequency, a spring positioning structure can be used directly without the need for the magnetic plate 13. In scenarios with frequent changeover, the magnetic plate 13 can be inserted to assist in gear shifting and reduce operating resistance.

[0110] By employing a pluggable, same-pole magnetic repulsion structure, the problems of high resistance and easy wear during spring-positioned shifting are solved. This balances smooth shifting with reliable locking, improving the equipment's operational flexibility.

[0111] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

[0112] It should be noted that the connector injection molding equipment involved in the above embodiments may include at least one of Embodiments 1 to 7. For example, Embodiment 1 can be implemented as an independent embodiment, Embodiment 1+2 can be implemented as an independent embodiment, Embodiment 2+3 can be implemented as an independent embodiment, Embodiment 2+4 can be implemented as an independent embodiment, Embodiment 2+3+4 can be implemented as an independent embodiment, Embodiment 1+2+3+5 can be implemented as an independent embodiment, Embodiment 1+2+4+5 can be implemented as an independent embodiment, Embodiment 3+4+5 can be implemented as an independent embodiment, Embodiment 2+3+4+6 can be implemented as an independent embodiment, Embodiment 2+3+5+6 can be implemented as an independent embodiment, Embodiment 3+4+5+6 can be implemented as an independent embodiment, Embodiment 2+3+4+5+6 can be implemented as an independent embodiment, Embodiment 3+6+7 can be implemented as an independent embodiment, Embodiment 2+3+6+7 can be implemented as an independent embodiment, etc., but not limited to these, and will not be listed in detail here.

Claims

1. A connector injection molding equipment, characterized in that, include: Rack (1); An upper mold platform (2) is provided on the frame (1), and the upper mold platform (2) is provided with an injection part (4) for injecting molten plastic material into the mold cavity; The lower mold platform (3) is set on the frame (1) and is opposite to the upper mold platform (2). The top surface of the lower mold platform (3) forms a support surface (33) for supporting the mold. A wire feeding cavity (34) is provided on the support surface (33). The wire feeding cavity (34) is used to store the cable led out by the connector insert placed in the mold. A mold closing drive (5) is used to drive the upper mold platen (2) to move in a direction closer to or further away from the lower mold platen (3); The wire feeding cavity (34) is through-hole so that the wire feeding cavity (34) forms a first opening (341) and a second opening (342) on both sides of the lower mold table (3), respectively. The first opening (341) and the second opening (342) are interconnected, thereby allowing the connector insert and its cable to be pushed out through the first opening (341) or the second opening (342) after injection molding. The lower mold platform (3) includes a main support platform (31), an auxiliary support platform (32), and an adjustment drive component (6); The main support platform (31) and the auxiliary support platform (32) are spaced apart along a first direction, and the wire feeding cavity (34) is formed between the main support platform (31) and the auxiliary support platform (32); The main support platform (31) is fixedly mounted on the frame (1), and the support surface (33) is formed on the top surface of the main support platform (31); The auxiliary support platform (32) is slidably mounted on the frame (1); The adjustment drive (6) is used to drive the auxiliary support platform (32) to slide back and forth along the first direction; The mold closing drive (5) is used to drive the upper mold table (2) to move in a direction close to or away from the main support table (31) and the auxiliary support table (32); The upper mold platform (2) includes an injection mold platform (21) and a mating mold platform (22). The injection part (4) is disposed on the injection mold platform (21). The injection mold platform (21) and the main support platform (31) are arranged vertically opposite each other. The mating mold platform (22) and the auxiliary support platform (32) are arranged vertically opposite each other. The frame (1) is provided with a first guide portion (7) and a second guide portion (8) extending along the mold closing direction. The first guide portion (7) slides with the injection mold table (21) in the mold closing direction, and the second guide portion (8) slides with the mating mold table (22) in the mold closing direction. The mold closing drive (5) is used to drive the injection mold table (21) to reciprocate in a direction close to or away from the main support table (31); The adjustment drive (6) is disposed on the injection mold table (21).

2. The connector injection molding equipment according to claim 1, characterized in that: The injection molding section (4) includes an injection tube (41) and a heating plate (42). The upper mold plate (2) has an injection port (43) that communicates with the mold cavity. The injection tube (41) is set on the upper mold plate (2). One end of the injection tube (41) is connected to the injection port (43), and the other end is used to connect to the external molten plastic material supply end. The heating plate (42) is set on the upper mold plate (2), and the heating surface of the heating plate (42) is arranged facing the injection tube (41).

3. The connector injection molding equipment according to claim 1, characterized in that: The second guide part (8) includes a spline guide shaft (81) extending along the mold closing direction. The outer peripheral surface of the spline guide shaft (81) is provided with spline teeth (82) that pass through the axial direction of the spline guide shaft (81). The top end of the spline guide shaft (81) is fixedly connected to the mating mold table (22). A spline groove (83) is provided on the auxiliary support table (32). The spline guide shaft (81) passes through the spline groove (83). The spline teeth (82) mesh with the spline groove (83) to form a sliding fit.

4. The connector injection molding equipment according to claim 1, characterized in that: An installation space (23) is formed between the injection mold table (21) and the mating mold table (22). A flexible pusher block (9) is provided in the installation space (23). In the mold closing state, the lower end of the flexible pusher block (9) can extend into the wire release cavity (34).

5. The connector injection molding equipment according to claim 1, characterized in that: It also includes a guide seat (10) and a positioning seat (11), the guide seat (10) and the positioning seat (11) are respectively disposed on the mating mold table (22) and the injection mold table (21), the guide seat (10) is provided with a plurality of guide grooves (101) spaced apart along a first direction, the guide grooves (101) are waist-shaped grooves, and the groove length of the guide grooves (101) extends along the first direction; a positioning rod (111) is movably disposed on the positioning seat (11), and a positioning drive (12) is disposed on the positioning seat (11), the positioning drive (12) is used to drive the positioning rod (111) to be inserted into any of the guide grooves (101).

6. The connector injection molding equipment according to claim 5, characterized in that: The positioning seat (11) is provided with a mounting sleeve (113), the axial direction of the mounting sleeve (113) is perpendicular to the first direction, the positioning rod (111) passes through the mounting sleeve (113) and forms a sliding fit; the positioning drive (12) includes a first drive spring (121) disposed in the mounting sleeve (113), the two ends of the first drive spring (121) are respectively connected to the positioning rod (111) and the positioning seat (11).

7. A connector injection molding equipment according to claim 6, characterized in that: The guide seat (10) has a slot (103) along the first direction. A magnetic plate (13) is detachably disposed in the slot (103). A magnetic block (131) is disposed at one end of the positioning rod (111) facing the guide groove (101). When the magnetic plate (13) is inserted into the slot (103), the magnetic plate (13) and the magnetic block (131) are arranged opposite to each other. The magnetic poles on the opposite side of the magnetic plate (13) and the magnetic block (131) are the same.

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