An electronic wire harness mounting case injection mold

Abstract

The application discloses an electronic wire beam mounting shell injection mold, and relates to the technical field of injection molds, which comprises an upper mold and a lower mold, a mold cavity is arranged between the lower mold and the upper mold, a first mounting groove and a second mounting groove are arranged at the top of the lower mold, a plurality of specifications of pre-limiting plates for pre-positioning external pins are detachably connected in the first mounting groove, a plurality of groups of self-centering clamping mechanisms are adjustably and slidably connected in the second mounting groove along the mold opening and closing direction, the plurality of groups of self-centering clamping mechanisms are used for synchronously clamping a plurality of external pins along the mold opening and closing direction and making the axes of the plurality of external pins at the same horizontal height, and an adjusting mechanism for adjusting the spacing between two adjacent groups of self-centering clamping mechanisms is further arranged at the bottom of the second mounting groove. The application can effectively clamp a plurality of groups of external pins with different spacings or different thicknesses, and improve the applicability of the injection mold.

Description

Technical Field

[0001] This application relates to the technical field of injection molds, and in particular to an injection mold for an electronic wire harness mounting housing. Background Technology

[0002] Electronic wire harnesses are bundles of wires bound together with insulating material. They are conductors that provide current to load sources such as repeaters, switching devices, and control systems. During use, the external mounting housing effectively protects the wire harness from direct contact with sharp objects, reducing scratches and damage.

[0003] like Figure 1 The diagram illustrates a mounting housing for an electronic wiring harness used in automotive connectors. It includes an insulating outer shell 00 and external pins 01 and internal pins fixedly mounted on the shell. The insulating outer shell 00 is rectangular, with multiple external pins 01 and internal pins evenly spaced along its length. The external pins 01 are perpendicularly and fixedly connected to the exterior of the long sidewall of the insulating shell 00, while the internal pins are located inside the insulating shell 00 and perpendicularly and fixedly connected to the bottom wall of the insulating shell 00. During the production of this electronic wiring harness mounting housing, the internal and external pins need to be positioned and pre-fixed, and the raw material is fed into an injection mold to form the insulating shell.

[0004] In the actual production process of the aforementioned electronic wire harness mounting housing, external pins are generally pre-positioned by reserving slots in the injection mold, so that the external pins are aligned with the slots and fit together. However, for the aforementioned injection mold, if the reserved gap between the external pin and the slot is too large, it is difficult to ensure the accuracy of the external pin position. If the reserved gap between the external pin and the slot is too small, it will make the installation of the external pin more difficult and the pre-positioning of the external pin more inconvenient. Moreover, the reserved slots on the mold are actually difficult to adapt to external pins with different spacing or thickness, resulting in low mold applicability and inconvenient injection molding. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this application provides an injection mold for an electronic wire harness mounting housing, which facilitates the pre-fixing of external pins onto the injection mold and enables the injection mold to adapt to external pins of different spacing or thickness, thereby improving the applicability of the injection mold.

[0006] The electronic wire harness mounting housing injection mold provided in this application adopts the following technical solution:

[0007] An injection mold for an electronic wire harness mounting housing includes an upper mold and a lower mold. A mold cavity suitable for molding a workpiece is provided between the lower mold and the upper mold. The top of the lower mold is provided with a first mounting groove and a second mounting groove. The first mounting groove is located between the mold cavity and the second mounting groove, and a pre-limiting plate is detachably connected in the first mounting groove. The pre-limiting plate is provided with different specifications, and each specification of the pre-limiting plate has multiple pre-limiting grooves with different spacings and different numbers evenly spaced along its length direction. Multiple sets of self-centering clamping mechanisms are slidably connected in the second mounting groove along the mold opening and closing direction. The multiple sets of self-centering clamping mechanisms are arranged at equal intervals along the length direction of the pre-limiting plate, and the multiple sets of self-centering clamping mechanisms are used to simultaneously clamp multiple external pins along the mold opening and closing direction and keep the axes of the multiple external pins at the same horizontal height. An adjustment mechanism is also provided at the bottom of the second mounting groove for adjusting the spacing between two adjacent sets of self-centering clamping mechanisms.

[0008] By adopting the above technical solution, when injection molding electronic wire harness mounting housings, operators can pre-select a pre-limiting plate of appropriate specifications based on the actual spacing and thickness of the external pins on the mounting housing to be processed, and slide the self-centering clamping mechanism along the mold opening and closing direction to make the distance between the plane of the clamping center line of multiple sets of self-centering clamping mechanisms and the bottom wall of the lower mold cavity consistent with the actual thickness of the external pins; and adjust the spacing between multiple sets of self-centering clamping mechanisms through the adjustment mechanism to make the spacing between two adjacent sets of self-centering clamping mechanisms consistent with the spacing between two adjacent external pins. Then, the external pins are placed on the pre-limiting plate, the pre-limiting groove is used to pre-position the external pins, and the self-centering clamping mechanism is used to clamp and fix the external pins, thereby achieving effective clamping of multiple sets of external pins with different spacings or thicknesses, so that the injection mold can adapt to external pins with different spacings or thicknesses, effectively improving the applicability of the injection mold.

[0009] Preferably, multiple guide rails are equally spaced along the length of the pre-limiting plate in the second mounting groove, and the multiple guide rails correspond one-to-one with multiple sets of self-centering clamping mechanisms;

[0010] The self-centering clamping mechanism includes parallel upper and lower clamping plates, a rotating shaft, a shuttle-shaped plate, a first connecting rod, and a second connecting rod disposed between the upper and lower clamping plates. The upper and lower clamping plates are slidably connected to the guide rail near the first mounting groove along the mold opening and closing direction. The rotating shaft is rotatably mounted on the guide rail near the first mounting groove around its axis. The middle part of the shuttle-shaped plate is fixedly mounted on the rotating shaft. The first connecting rod and the second connecting rod are located on both sides of the shuttle-shaped plate, and the two ends of the first connecting rod are rotatably connected to the shuttle-shaped plate and the upper clamping plate, respectively. The two ends of the second connecting rod are rotatably connected to the shuttle-shaped plate and the lower clamping plate, respectively. A driving component for driving the lower clamping plate to slide closer to or away from the upper clamping plate along the mold opening and closing direction is provided on the side of the lower clamping plate away from the upper clamping plate.

[0011] By adopting the above technical solution, the lower clamping plate is driven by the drive component to slide closer to or further away from the upper clamping plate along the mold opening and closing direction, which can more easily achieve stable clamping of the external pin and keep the axis of the external pin consistent with the axis of rotation.

[0012] Preferably, the driving assembly includes a push rod, a driving plate, and a first driving cylinder. Multiple push rods are evenly spaced along the length of the pre-limiting plate, and the multiple push rods are slidably connected to multiple guide rails in a one-to-one correspondence. The driving plate and the first driving cylinder are located below the push rods, and the first driving cylinder is fixedly installed on the lower mold. The driving plate is vertically and fixedly installed on the output end of the first driving cylinder. The lower end of the push rod is connected to the driving plate, and the upper end of the push rod is adapted to movably abut against the lower clamping plate.

[0013] By adopting the above technical solution, when it is necessary to clamp and fix the external insert, the operator can use the first drive cylinder to drive the drive plate to slide close to the upper clamping plate and the lower clamping plate along the mold opening and closing direction, and use the first drive motor to drive the limit gear connected to the first drive motor to rotate counterclockwise synchronously, thereby driving multiple push rods to slide close to and press the lower clamping plate upward along the mold opening and closing direction, so that the lower clamping plate drives the second connecting rod to move towards the upper clamping plate, and through the second connecting rod, drives the shuttle plate to rotate counterclockwise around the rotating axis, and through the shuttle plate, drives the first connecting rod to pull the upper clamping plate, so that the upper clamping plate and the lower clamping plate move closer to each other synchronously, thereby realizing the self-centering clamping of the external insert placed between the upper clamping plate and the lower clamping plate.

[0014] Preferably, each of the top rods is fixedly connected to an elastic element and a telescopic rod at its lower end, and the end of the elastic element and the telescopic rod away from the top rod is connected to the drive plate.

[0015] By adopting the above technical solution, when the multiple external pins on the electronic wire harness mounting housing are of different thicknesses, the elastic element and telescopic rod in this application can further assist in filling the gaps in the drive assembly, the limiting horizontal plate, and the second drive cylinder. By making the actual sliding distance of the drive plate consistent with the distance from the external pin with the smallest diameter among the multiple external pins to the bottom surface of the mold cavity of the lower mold, the self-centering and stable clamping of external pins of different thicknesses can be achieved.

[0016] Preferably, a limiting gear is provided between the connected guide rail and the top rod. The guide rail has a first tooth groove, and the top rod has a second tooth groove. The limiting gear meshes with the first tooth groove and the second tooth groove on both sides, respectively.

[0017] By adopting the above technical solution, it is easy to coordinate with the drive assembly to achieve synchronous sliding of multiple ejector rods along the mold opening and closing direction, thereby improving the stability of the ejector rods sliding on the guide rod.

[0018] Preferably, the adjustment mechanism includes a second drive motor and a bidirectional lead screw. The axial direction of the bidirectional lead screw is parallel to the length direction of the pre-limiting plate. The bidirectional lead screw is rotatably mounted on the bottom of the second mounting groove along its axial direction. The second drive motor is fixedly mounted on the lower mold and is used to drive the bidirectional lead screw to rotate. The multiple guide rails include fixed rails and moving rails. The fixed rails are fixedly mounted in the second mounting groove, and the moving rails are assembled on the bidirectional lead screw and slidably connected in the second mounting groove along the extension direction of the bidirectional lead screw.

[0019] The elastic element and the end of the telescopic rod away from the top rod are slidably connected to the drive plate in a direction parallel to the bidirectional lead screw.

[0020] Preferably, the adjustment mechanism further includes X-connectors, and multiple X-connectors are provided. Any two adjacent guide rails are connected by X-connectors and move away from or closer to each other through X-connectors.

[0021] By adopting the above technical solution, when the spacing between the external pins on the electronic wire harness mounting housing to be processed changes, the operator can use the second drive motor, the bidirectional lead screw and the X connector to make the active rail drive the driven rail to slide closer to or away from the fixed rail along the length extension direction of the second mounting groove, thereby realizing the adjustment of the spacing between multiple sets of self-centering clamping mechanisms, and ensuring that the spacing between any two adjacent sets of self-centering clamping mechanisms remains consistent.

[0022] Preferably, the drive plate has a straight groove on the side away from the first drive cylinder, the groove is parallel to the bidirectional lead screw, and the elastic element and the telescopic rod are slidably connected in the groove without slipping at the end away from the top rod.

[0023] By adopting the above technical solution, it is beneficial to reduce the interference between the drive component and the adjustment mechanism.

[0024] Preferably, a limiting horizontal plate is provided on the side of the guide rail near the first mounting groove. A straight limiting horizontal groove is formed on the limiting horizontal plate along the extension direction of the second mounting groove. The limiting horizontal plate is slidably connected to the guide rail along the mold opening and closing direction. The end of the rotating shaft away from the shuttle-shaped plate passes through the limiting horizontal plate through the limiting horizontal groove and is rotatably mounted on the guide rail. The diameter of the rotating shaft is consistent with the groove width of the limiting horizontal groove. A second drive cylinder is provided in the second mounting groove to drive the limiting horizontal plate to slide along the mold opening and closing direction.

[0025] By adopting the above technical solution, the operator can use the limiting horizontal plate and the second drive cylinder to adjust the position of the rotating shaft, so that the distance between the plane where the axes of the multiple rotating shafts are located and the bottom surface of the mold cavity on the lower mold is consistent with the distance between the plane where the axes of the multiple external pins are located and the bottom surface of the electronic wire harness mounting housing. This allows the self-centering clamping mechanism to adaptively and stably clamp the external pins on the electronic wire harness mounting housing according to their actual thickness.

[0026] Preferably, the end of the push rod away from the drive plate has a protruding buffer block.

[0027] By adopting the above technical solution, it is beneficial to buffer the ejector pin and the lower clamping plate, thereby improving the service life of the injection mold.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. By cooperating with the pre-limit plate, the self-centering clamping mechanism and the adjustment mechanism, the external pin is placed on the pre-limit plate, the pre-limit groove is used to pre-position the external pin, and the self-centering clamping mechanism is used to clamp and fix the external pin. This can effectively clamp multiple sets of external pins with different spacing or different thicknesses, so that the injection mold can adapt to external pins with different spacing or different thicknesses.

[0030] 2. Through the cooperation of the drive assembly, self-centering clamping mechanism, limiting cross plate and second drive cylinder, the operator can adjust the position of the self-centering clamping mechanism so that the distance between the plane where the clamping center line of multiple self-centering clamping mechanisms is located and the bottom wall of the mold cavity of the lower mold is consistent with the actual thickness of the external pin, thereby making it easier to achieve stable clamping of the external pin and keep the axis of the external pin consistent with the axis of rotation.

[0031] 3. Through the cooperation of the second drive motor, bidirectional lead screw, X connector, guide rail, limiting cross plate and drive plate, the injection mold in this application can adjust the spacing between multiple sets of self-centering clamping mechanisms, and ensure that the spacing between any two adjacent sets of self-centering clamping mechanisms is always consistent, and that the axes of multiple external pins are always located in the same plane, thereby enabling the injection mold to effectively adapt to external pins with different spacing and thickness, and further improving the applicability of the injection mold. Attached Figure Description

[0032] Figure 1 This is an axonometric schematic diagram of the overall structure of the mounting housing for an electronic wiring harness used in an automotive connector, as described in the background art.

[0033] Figure 2 This is an isometric schematic diagram of the overall structure of an embodiment of this application;

[0034] Figure 3 This is a schematic diagram illustrating the structure of the self-centering clamping mechanism, the adjustment mechanism, and the drive component, which are the main features of the embodiments of this application.

[0035] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0036] Figure 5 for Figure 3 Enlarged schematic diagram of part B;

[0037] Figure 6 This is a schematic diagram illustrating the structure of the adjustment mechanism and drive component, which are the main features of the embodiments of this application.

[0038] Figure 7 This is a schematic diagram illustrating the connection relationship between the drive assembly and the lower mold, which is a key embodiment of this application.

[0039] Reference numerals: 00, Insulating shell; 01, External pin; 1, Lower mold; 11, First mounting slot; 12, Second mounting slot; 121, Second drive cylinder; 13, Guide rail; 131, Fixed rail; 132, Driven rail; 133, Driven rail; 134, First toothed groove; 14, Limiting horizontal plate; 141, Limiting horizontal groove; 2, Mold cavity; 3, Pre-limiting plate; 31, Limiting slide bar; 32, Pre-limiting groove; 4, Self-centering clamping mechanism; 41, Upper... 42. Lower clamping plate; 43. Rotating shaft; 44. Shuttle plate; 45. First connecting rod; 46. Second connecting rod; 47. V-shaped plate; 5. Adjusting mechanism; 51. Second drive motor; 52. Bidirectional lead screw; 53. X-connector; 6. Drive assembly; 61. Top rod; 611. Second tooth groove; 62. Drive plate; 621. Slide groove; 63. First drive cylinder; 64. Elastic element; 65. Telescopic rod; 66. Limiting gear; 67. Buffer block. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0041] This application discloses an injection mold for an electronic wire harness mounting housing.

[0042] Reference Figure 1 and Figure 2 An injection mold for an electronic wire harness mounting housing includes an upper mold and a lower mold 1. A mold cavity 2 suitable for molding the workpiece is provided between the upper mold and the lower mold 1. In order to facilitate the pre-fixing of the external pin to the injection mold, the top of the lower mold 1 is provided with a first mounting groove 11 and a second mounting groove 12. A pre-limiting plate 3 for placing the external pin and pre-positioning the external pin is detachably provided in the first mounting groove 11. Multiple sets of self-centering clamping mechanisms 4 for clamping and fixing the external pin are slidably connected in the second mounting groove 12 along the mold opening and closing direction.

[0043] Specifically, the lower mold 1 is rectangular in shape, and the first mounting groove 11 and the second mounting groove 12 are both straight grooves with openings at both ends. The first mounting groove 11 and the second mounting groove 12 are parallel to the long side of the lower mold 1, and the first mounting groove 11 is located between the mold cavity 2 and the second mounting groove 12.

[0044] Reference Figure 2 The pre-limiting plate 3 is provided with different specifications. The pre-limiting plates 3 of different specifications have the same height, width and thickness. The bottom of each specification of pre-limiting plate 3 is provided with a limiting slide 31 protruding outward along the straight extension direction of the first mounting groove 11. The first mounting groove 11 is provided with a sliding groove suitable for the limiting slide 31 to be fitted and for the limiting slide 31 to be slidably installed.

[0045] The sliding groove is a straight groove with one end open. The extension direction of the sliding groove is consistent with the extension direction of the first mounting groove 11, and the opening of the sliding groove is connected to the opening of the first mounting groove 11. The pre-limiting plate 3 is adapted to be slidably embedded and fixedly installed on the lower mold 1 from one side through the opening at the end of the first mounting groove 11 and the opening at the end of the sliding groove.

[0046] Furthermore, refer to Figure 2 Each specification of the pre-limit plate 3 has multiple pre-limit grooves 32 with different spacing and different numbers evenly spaced along its length direction on its top.

[0047] The pre-limiting groove 32 is a straight groove with open ends and an arc-shaped bottom surface. The opening direction of the pre-limiting groove 32 is consistent with the thickness direction of the pre-limiting plate 3. When the pre-limiting plate 3 is fitted and fixedly installed on the lower mold 1, the opening direction of the pre-limiting groove 32 is consistent with the short side direction of the lower mold 1. The operator can place multiple external pins into the multiple pre-limiting grooves 32 one by one along the length direction of the pre-limiting plate 3.

[0048] When the specifications and uses of the electronic wire harness to be processed are different, and the spacing of the external pins of the electronic wire harness mounting housing needs to be adjusted, the operator can disassemble and replace the pre-limiting plate 3 on the lower mold 1. The pre-limiting plate 3 is used to support the external pins and achieve the pre-positioning of the external pins.

[0049] Furthermore, refer to Figure 3 and Figure 4 The self-centering clamping mechanism 4 includes an upper clamping plate 41, a lower clamping plate 42, a rotating shaft 43, a shuttle-shaped plate 44, a first connecting rod 45, and a second connecting rod 46.

[0050] The top surface of the lower mold 1 is composed of multiple planes of varying heights. The upper clamping plate 41 and the lower clamping plate 42 are both rectangular plates. The upper clamping plate 41 and the lower clamping plate 42 are parallel to the top surface of the lower mold 1, and the upper clamping plate 41 and the lower clamping plate 42 have the same specifications. The upper clamping plate 41 and the lower clamping plate 42 are arranged vertically opposite each other in a direction perpendicular to the top surface of the lower mold 1.

[0051] Reference Figure 4 The rotating shaft 43, the shuttle plate 44, the first connecting rod 45, and the second connecting rod 46 are located between the upper clamping plate 41 and the lower clamping plate 42. The first connecting rod 45 and the second connecting rod 46 have the same specifications. The distance between the rotating shaft 43 and the upper clamping plate 41 is the same as the distance between the rotating shaft 43 and the lower clamping plate 42. The shuttle plate 44 is perpendicular to the rotating shaft 43, and the middle part of the shuttle plate 44 is fixedly connected to the rotating shaft 43. The central axis of the shuttle plate 44 coincides with the axis of the rotating shaft 43. The first connecting rod 45 and the second connecting rod 46 are located on both sides of the shuttle plate 44. The two ends of the first connecting rod 45 are rotatably connected to the shuttle plate 44 and the upper clamping plate 41, respectively. The two ends of the second connecting rod 46 are rotatably connected to the shuttle plate 44 and the lower clamping plate 42, respectively.

[0052] Reference Figure 4 And watch back Figure 3Multiple guide rails 13 are evenly spaced along the length of the pre-limiting plate 3 within the second mounting groove 12. Each guide rail 13 corresponds to one of multiple self-centering clamping mechanisms 4, and the guide rails 13 are perpendicular to the top surface of the lower mold 1. All self-centering clamping mechanisms 4 are located on the side of the guide rails 13 closest to the first mounting groove 11. The upper clamping plate 41 and lower clamping plate 42 of each self-centering clamping mechanism 4 are slidably mounted on the guide rail 13 corresponding to that self-centering clamping mechanism 4 along the mold opening and closing direction. The rotating shaft 43 of each self-centering clamping mechanism 4 rotates around... Each axis is rotatably mounted on a guide rail 13 corresponding to the self-centering clamping mechanism 4; and multiple rotating shafts 43 in the multiple self-centering clamping mechanisms 4 are located in a plane parallel to the top surface of the lower mold 1. The top of the second mounting groove 12 is provided with a limiting horizontal plate 14 and a second drive cylinder 121 for driving multiple rotating shafts 43 to move synchronously closer to or away from the top surface of the lower mold 1 in the mold opening and closing direction. The side of the lower clamping plate 42 away from the upper clamping plate 41 is provided with a drive assembly 6 for driving the lower clamping plate 42 to slide closer to or away from the upper clamping plate 41 in the mold opening and closing direction.

[0053] Specifically, refer to Figure 3 , Figure 5 and Figure 6 The drive assembly 6 includes a push rod 61, a drive plate 62, and a first drive cylinder 63.

[0054] Both the push rod 61 and the guide rail 13 are square rods, and the push rod 61 is parallel to the guide rail 13. The side surface of the guide rail 13 away from the first mounting groove 11 is coplanar with the side surface of the second mounting groove 12 away from the first mounting groove 11. The side surface of the push rod 61 away from the first mounting groove 11 is coplanar with the side surface of the guide rail 13 close to the first mounting groove 11. Multiple push rods 61 are evenly spaced along the length of the pre-limiting plate 3, and the multiple push rods 61 are slidably connected to the multiple guide rails 13 one by one.

[0055] Reference Figure 3 and Figure 6 Both the drive plate 62 and the first drive cylinder 63 are located below the ejector rod 61. The cylinder body of the first drive cylinder 63 is fixedly installed on the outer side of the bottom wall of the lower mold 1. The output shaft of the first drive cylinder 63 passes vertically through the bottom wall of the lower mold 1 along the mold opening and closing direction and is inserted into the second mounting groove 12. The drive plate 62 is fixedly installed at the end of the output shaft of the first drive cylinder 63 and is slidably connected to the second mounting groove 12 along the mold opening and closing direction. The drive plate 62 is also a rectangular plate. The drive plate 62 is parallel to the top surface of the lower mold 1, and the long side of the drive plate 62 is consistent with the long side of the lower mold 1. The lower ends of multiple ejector rods 61 are all connected to the drive plate 62, and the multiple ejector rods 61 can slide synchronously with the drive plate 62 and the first drive rod along the mold opening and closing direction. The upper end of the ejector rod 61 is in contact with the side surface of the lower clamping plate 42 away from the upper clamping plate 41.

[0056] By controlling the extension or retraction distance of the output shaft of the first drive cylinder 63, the distance between the upper clamping plate 41 and the lower clamping plate 42 can be adjusted, thereby enabling the upper clamping plate 41 and the lower clamping plate 42 to adaptively clamp external pins of different diameters. At the same time, in order to improve the stability of the upper clamping plate 41 and the lower clamping plate 42 in clamping external pins, two V-shaped plates 47 are vertically and fixedly connected to the adjacent sides of the upper clamping plate 41 and the lower clamping plate 42, respectively. The two V-shaped plates 47 are located on the side of the upper clamping plate 41 away from the shuttle plate 44 and the side of the lower clamping plate 42 away from the shuttle plate 44, respectively, and the slots of the two V-shaped plates 47 are arranged vertically opposite each other along the mold opening and closing direction.

[0057] The upper clamping plate 41 and the lower clamping plate 42 drive the V-shaped plate 47 to clamp the external pin, which helps to expand the contact area between the self-centering clamping mechanism 4 and the external pin, thereby effectively improving the stability of the self-centering clamping mechanism 4 in clamping the external pin.

[0058] Reference Figure 3 and Figure 6 The limiting horizontal plate 14 is a rectangular plate, parallel to the top surface of the lower mold 1, and the long side of the limiting horizontal plate 14 is consistent with the long side of the lower mold 1. The limiting horizontal plate 14 is slidably connected to the guide rail 13 along the mold opening and closing direction. Multiple rotating shafts 43 pass through the limiting horizontal plate 14 at equal intervals along the long side of the limiting horizontal plate 14, and the end of the rotating shaft 43 away from the shuttle plate 44 passes through the limiting horizontal plate 14 and is mounted on the guide rail 13 in a non-slip manner. Two sets of second drive cylinders 121 are provided. The two sets of second drive cylinders 121 are located at both ends of the limiting horizontal plate 14, and both sets of second drive cylinders 121 are fixedly installed on the side wall of the second mounting groove 12. The output ends of the two sets of second drive cylinders 121 are fixed to both ends of the limiting horizontal plate 14, and the movement direction of the output shaft of the second drive cylinder 121 is consistent with the mold opening and closing direction.

[0059] By using the limiting horizontal plate 14 and the second drive cylinder 121, multiple rotating shafts 43 in the multiple sets of self-centering clamping mechanisms 4 can be limited, and the clamping center point of the self-centering clamping mechanism 4 relative to the top surface of the lower mold 1 can be finely adjusted. This allows the operator to adjust the distance between the external pin and the bottom wall of the mold cavity 2 on the lower mold 1 according to the different diameters of the external pin, so that the injection mold can adapt to external pins of different thicknesses.

[0060] Furthermore, refer to Figure 3 and Figure 6 Each push rod 61 has an elastic element 64 and a telescopic rod 65 fixedly connected to the end near the drive plate 62, and a buffer block 67 protrudes from the end of each push rod 61 away from the drive plate 62. (See previous text) Figure 5A limiting gear 66 is provided between the guide rail 13 and the push rod 61 to enhance the sliding stability of the push rod 61 on the guide rail 13.

[0061] In the embodiments of this application, reference is made to Figure 3 and Figure 5 The elastic element 64 is preferably a spring, which is coaxially sleeved on the outside of the telescopic rod 65. The end of the spring away from the top rod 61 and the end of the telescopic rod 65 away from the top rod 61 are both connected to the drive plate 62 in a non-slip manner.

[0062] The axial direction of the limiting gear 66 is parallel to the long side direction of the drive plate 62, and the guide rail 13 is provided with a first tooth groove 134, and the push rod 61 is provided with a second tooth groove 611. The two sides of the limiting gear 66 mesh with the first tooth groove 134 and the second tooth groove 611 respectively. The number of limiting gears 66 is consistent with the number of guide rails 13, and one side of the guide rail 13 is provided with a bearing seat and a rotating shaft 43 bearing for limiting the limiting gear 66.

[0063] Specifically, refer to Figure 3 and Figure 6 The bearing housing is fixedly installed on the side wall of the guide rail 13. The axis of the rotating shaft 43 bearing is parallel to the long side of the drive plate 62. The rotating shaft 43 bearing is rotatably connected to the bearing housing along its axial direction. The limiting gear 66 is coaxially fixed with the inner ring of the rotating shaft 43 bearing. The two rotating shaft 43 bearings located at the outermost edge of the second mounting groove 12 are provided with a first drive motor on the side away from the limiting gear 66. The first drive motor is fixedly installed on the bearing housing, and the first drive motor is used to further drive the limiting gear 66 to rotate synchronously when the first drive cylinder drives the drive plate 62 to slide in the mold opening and closing direction.

[0064] When it is necessary to clamp and fix the external insert, the operator can use the first drive cylinder 63 to drive the drive plate 62 to slide close to the upper clamping plate 41 and the lower clamping plate 42 along the mold opening and closing direction, and use the first drive motor to drive the limit gear 66 connected to the first drive motor to rotate counterclockwise synchronously, thereby driving multiple push rods 61 to slide close to and press the lower clamping plate 42 upward along the mold opening and closing direction, so that the lower clamping plate 42 drives the second connecting rod 46 to move closer to the upper clamping plate 41. The second connecting rod 46 drives the shuttle plate 44 to rotate counterclockwise around the rotating shaft 43, and the shuttle plate 44 drives the first connecting rod 45 to pull the upper clamping plate 41, so that the upper clamping plate 41 and the lower clamping plate 42 move closer to each other synchronously, thereby realizing the self-centering clamping of the external insert placed between the upper clamping plate 41 and the lower clamping plate 42.

[0065] Reference Figure 3 and Figure 6Under the clamping action of the upper clamping plate 41 and the lower clamping plate 42, the axis of the external pin can be aligned with the axis of the rotating shaft 43. The operator can use the limiting horizontal plate 14 and the second drive cylinder 121 to adjust the position of the rotating shaft 43, so that the distance between the plane containing the axes of the multiple rotating shafts 43 and the bottom surface of the mold cavity 2 on the lower mold 1 is consistent with the distance between the plane containing the axes of the multiple external pins and the bottom surface of the electronic wire harness mounting housing. This allows the self-centering clamping mechanism 4 to adjust the position of the external pins on the electronic wire harness mounting housing according to their actual thickness. The system adaptively performs self-centering and stable clamping. Simultaneously, when multiple external pins on the electronic wire harness mounting housing have varying thicknesses, the elastic element 64 and telescopic rod 65 in this application can further assist in filling gaps in the drive assembly 6, the limiting horizontal plate 14, and the second drive cylinder 121. By ensuring that the actual sliding distance of the drive plate 62 is consistent with the distance from the smallest diameter external pin to the bottom surface of the mold cavity 2 of the lower mold 1, self-centering and stable clamping of external pins of varying thicknesses are achieved, thereby effectively improving the applicability of the injection mold.

[0066] Furthermore, refer to Figure 3 and Figure 6 In this embodiment, the adjustment mechanism 5 includes a second drive motor 51, a bidirectional lead screw 52, ​​and an X-connector 53. The bidirectional lead screw 52 is rotatably mounted on the bottom wall of the second mounting groove 12 along its axial direction, and the axial direction of the bidirectional lead screw 52 is parallel to the length direction of the pre-limiting plate 3. The threads of the bidirectional lead screw 52 from its midpoint to the left end and from its midpoint to the right end have opposite directions of rotation. The second drive motor 51 is fixedly mounted on the lower mold 1 and is used to drive the bidirectional lead screw 52 to rotate.

[0067] Reference Figure 3 The multiple guide rails 13 include a fixed rail 131, a driving rail 132, and a driven rail 133. The lower end of the fixed rail 131 is sleeved in the middle of the bidirectional lead screw 52, ​​and the fixed rail 131 is fixedly installed in the second mounting groove 12. Two driving rails 132 are provided, with the two driving rails 132 located on both sides of the fixed rail 131, and the two driving rails 132 are threadedly assembled to both ends of the bidirectional lead screw 52. Both driving rails 132 extend along the length direction of the second mounting groove 12. It is slidably connected in the second mounting groove 12; multiple driven rails 133 are provided, and the multiple driven rails 133 are evenly arranged between the two driving rails 132 and the fixed rail 131, and the driven rails 133 are slidably sleeved on the bidirectional lead screw 52 along the length extension direction of the second mounting groove 12. The driving rails 132 and driven rails 133, the driven rails 133 and fixed rails 131, and the driven rails 133 and each other are all connected by X-connectors 53.

[0068] X-connector 53 includes two pivotally connected and centrally symmetrical arms at the center. The X-connector 53 between the driving rail 132 and the driven rail 133, the X-connector 53 between the driven rail 133 and the fixed rail 131, and the X-connector 53 between the driven rails 133 are all of the same specification. The two ends of the arms of the X-connector 53 between the driving rail 132 and the driven rail 133 are rotatably connected to the driving rail 132 and the driven rail 133, respectively. The upper end of the arms can also reciprocate along the opening and closing direction on the driving rail 132 or the driven rail 133.

[0069] Furthermore, refer to Figure 3 , Figure 6 and Figure 7 Since the push rod 61 is slidably mounted on the guide rail 13 along the mold opening and closing direction, in order to avoid interference between the drive assembly 6 and the adjustment mechanism 5, the elastic element 64 and the telescopic rod 65 are slidably connected to the drive plate 62 at the ends away from the push rod 61 along a direction parallel to the bidirectional lead screw 52. A straight limiting transverse groove 141 is provided on the limiting transverse plate 14 along the extension direction of the second mounting groove 12. The end of the rotating shaft 43 away from the shuttle plate 44 passes through the limiting transverse groove 141 and is rotatably mounted on the guide rail 13. On the guide rail 13, the diameter of the rotating shaft 43 is consistent with the groove width of the limiting transverse groove 141; when the second drive motor 51, the bidirectional lead screw 52 and the X connector 53 drive the active rail 132 and the driven rail 133 to slide along the extension direction of the second mounting groove 12, the end of the elastic member 64 and the telescopic rod 65 away from the top rod 61 can slide on the drive plate 62 with the top rod 61, and the self-centering clamping mechanism 4 can also slide on the limiting transverse plate 14 with the top rod 61.

[0070] When the spacing between the external pins on the mounting housing of the electronic wire harness to be processed changes, the operator can use the second drive motor 51, the bidirectional lead screw 52 and the X connector 53 to make the active rail 132 drive the driven rail 133 to slide closer to or away from the fixed rail 131 along the length extension direction of the second mounting groove 12, thereby realizing the adjustment of the spacing between multiple sets of self-centering clamping mechanisms 4, and ensuring that the spacing between any two adjacent sets of self-centering clamping mechanisms 4 remains consistent, and that the axes of multiple external pins are always located in the same plane, so that the injection mold can effectively adapt to external pins with different spacing and different thicknesses, and the injection mold has high applicability.

[0071] The implementation principle of an injection mold for an electronic wire harness mounting housing according to an embodiment of this application is as follows: During the injection molding production of the electronic wire harness mounting housing, the operator can pre-select a pre-limiting plate 3 of appropriate specifications based on the actual spacing and thickness of the external pins on the mounting housing to be processed, and adjust the position of the self-centering clamping mechanism 4 through the second drive cylinder and the limiting horizontal plate 14 so that the distance between the plane where the clamping center line of the multiple sets of self-centering clamping mechanisms 4 is located and the bottom wall of the mold cavity 2 of the lower mold 1 is consistent with the actual thickness of the external pins; and adjust the spacing between the multiple sets of self-centering clamping mechanisms 4 through the adjusting mechanism 5 so that the spacing between adjacent sets of self-centering clamping mechanisms 4 is adjusted. The spacing between the holding mechanisms 4 is consistent with the spacing between two adjacent external pins; then the external pins are placed on the pre-limiting plate 3, and the pre-limiting groove 32 is used to pre-position the external pins. Then, the driving component 6 is used to drive the corresponding upper clamping plate 41 and lower clamping plate 42 in the multiple self-centering clamping mechanisms 4 to move closer to each other, thereby realizing the synchronous and stable clamping of multiple sets of external pins with different spacing and thickness. This allows the injection mold to adapt to external pins with different spacing or thickness, effectively improving the applicability of the injection mold, reducing the difficulty of installing and positioning external pins, and helping to improve the injection quality of electronic wire harness mounting housing.

[0072] 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.

Claims

1. An injection mold for an electronic wire harness mounting housing, comprising an upper mold and a lower mold (1), wherein a mold cavity (2) suitable for molding a workpiece is provided between the lower mold (1) and the upper mold, characterized in that: The lower mold (1) is provided with a first mounting groove (11) and a second mounting groove (12) at the top. The first mounting groove (11) is located between the mold cavity (2) and the second mounting groove (12). A pre-limiting plate (3) is detachably connected in the first mounting groove (11). The pre-limiting plate (3) is provided with different specifications. Each specification of the pre-limiting plate (3) is provided with multiple pre-limiting grooves (32) with different spacing and different numbers at equal intervals along its length direction. Multiple self-centering clamping mechanisms (4) are slidably connected in the second mounting groove (12) along the mold opening and closing direction. The multiple self-centering clamping mechanisms (4) are arranged at equal intervals along the length direction of the pre-limiting plate (3). The multiple self-centering clamping mechanisms (4) are used to simultaneously clamp multiple external pins along the mold opening and closing direction and make the axes of multiple external pins at the same horizontal height. An adjustment mechanism (5) is also provided at the bottom of the second mounting groove (12) for adjusting the spacing between two adjacent sets of self-centering clamping mechanisms (4). Multiple guide rails (13) are equally spaced along the length of the pre-limiting plate (3) in the second mounting groove (12), and the multiple guide rails (13) correspond one-to-one with multiple sets of self-centering clamping mechanisms (4); The self-centering clamping mechanism (4) includes an upper clamping plate (41) and a lower clamping plate (42) that are parallel to each other, as well as a rotating shaft (43), a shuttle-shaped plate (44), a first connecting rod (45), and a second connecting rod (46) disposed between the upper clamping plate (41) and the lower clamping plate (42). The upper clamping plate (41) and the lower clamping plate (42) are both slidably connected to the guide rail (13) near the first mounting groove (11) along the mold opening and closing direction. The rotating shaft (43) is rotatably mounted on the guide rail (13) near the first mounting groove (11) around its axis. The shuttle-shaped plate (45) is slidably connected to the guide rail (13) near the first mounting groove (11) along the mold opening and closing direction. 4) The middle part is fixedly installed on the rotating shaft (43). The first connecting rod (45) and the second connecting rod (46) are located on both sides of the shuttle plate (44). The two ends of the first connecting rod (45) are rotatably connected to the shuttle plate (44) and the upper clamping plate (41) respectively. The two ends of the second connecting rod (46) are rotatably connected to the shuttle plate (44) and the lower clamping plate (42) respectively. The side of the lower clamping plate (42) away from the upper clamping plate (41) is provided with a driving component (6) for driving the lower clamping plate (42) to slide closer to or away from the upper clamping plate (41) in the mold opening and closing direction.

2. The injection mold for an electronic wire harness mounting housing according to claim 1, characterized in that: The drive assembly (6) includes a push rod (61), a drive plate (62), and a first drive cylinder (63). Multiple push rods (61) are evenly spaced along the length of the pre-limit plate (3). The multiple push rods (61) are slidably connected to multiple guide rails (13) in a one-to-one correspondence. The drive plate (62) and the first drive cylinder (63) are located below the push rods (61), and the first drive cylinder (63) is fixedly installed on the lower mold (1). The drive plate (62) is vertically and fixedly installed on the output end of the first drive cylinder (63). The lower end of the push rod (61) is connected to the drive plate (62), and the upper end of the push rod (61) is adapted to movably abut against the lower clamping plate (42).

3. The injection mold for an electronic wire harness mounting housing according to claim 2, characterized in that: Each of the top rods (61) is fixedly connected to an elastic element (64) and a telescopic rod (65) at its lower end. The ends of the elastic element (64) and the telescopic rod (65) away from the top rod (61) are connected to the drive plate (62).

4. An injection mold for an electronic wire harness mounting housing according to any one of claims 2-3, characterized in that: A limiting gear (66) is provided between the guide rail (13) and the push rod (61) that are connected. The guide rail (13) has a first tooth groove (134) and the push rod (61) has a second tooth groove (611). The limiting gear (66) meshes with the first tooth groove (134) and the second tooth groove (611) on both sides respectively.

5. The injection mold for an electronic wire harness mounting housing according to claim 3, characterized in that: The adjustment mechanism (5) includes a second drive motor (51) and a bidirectional lead screw (52). The axis of the bidirectional lead screw (52) is parallel to the length direction of the pre-limit plate (3). The bidirectional lead screw (52) is rotatably mounted on the bottom of the second mounting groove (12) along its axial direction. The second drive motor (51) is fixedly mounted on the lower mold (1) and used to drive the bidirectional lead screw (52) to rotate. The multiple guide rails (13) include fixed rails (131) and moving rails. The fixed rails (131) are fixedly mounted in the second mounting groove (12). The moving rails are assembled on the bidirectional lead screw (52) and slide along the extension direction of the bidirectional lead screw (52) in the second mounting groove (12). The elastic element (64) and the telescopic rod (65) are slidably connected to the drive plate (62) at the end away from the top rod (61) in a direction parallel to the bidirectional lead screw (52).

6. The injection mold for an electronic wire harness mounting housing according to claim 5, characterized in that: The adjustment mechanism (5) also includes an X connector (53), and multiple X connectors (53) are provided. Any two adjacent guide rails (13) are connected by X connectors (53) and move away from or close to each other by X connectors (53).

7. The injection mold for an electronic wire harness mounting housing according to claim 5, characterized in that: The drive plate (62) has a straight groove (621) on the side away from the first drive cylinder (63). The groove (621) is parallel to the double-acting screw (52). The elastic element (64) and the telescopic rod (65) are slidably connected in the groove (621) without slipping at the end away from the top rod (61).

8. The injection mold for an electronic wire harness mounting housing according to claim 5, characterized in that: A limiting plate (14) is provided on the side of the guide rail (13) near the first mounting groove (11). A straight limiting groove (141) is provided on the limiting plate (14) along the extension direction of the second mounting groove (12). The limiting plate (14) is slidably connected to the guide rail (13) along the mold opening and closing direction. The end of the rotating shaft (43) away from the shuttle plate (44) passes through the limiting plate (14) through the limiting groove (141) and is rotatably mounted on the guide rail (13). The diameter of the rotating shaft (43) is consistent with the groove width of the limiting groove (141). A second drive cylinder (121) is provided in the second mounting groove (12) for driving the limiting plate (14) to slide along the mold opening and closing direction.

9. The injection mold for an electronic wire harness mounting housing according to claim 4, characterized in that: The top rod (61) has a buffer block (67) protruding from the end away from the drive plate (62).

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