Preparation method of connector with secondary lock

Abstract

The invention provides a preparation method of a connector with a secondary lock. The preparation method comprises the following steps: S100, stripping a cable; s200, pressing a shielding ring on the periphery of the braid layer, reversely stripping the braid layer and covering the periphery of the shielding ring; s300, flatness detection is carried out on the position of the shielding ring after crimping is completed; s400, crimping the terminal on the outer side of the core wire in the cable; s500, sampling detection is carried out on the cross section of the crimped cable; s600, the straightness of the cable after crimping is completed is detected; s700, a terminal is inserted into a preset position in the outer conductor and crimped; s800, inserting the outer conductor into the shell and positioning the outer conductor at a preset position; s900, a secondary lock is installed on the outer side of the shell to achieve axial positioning of the outer conductor in the shell; the corresponding process can be improved and optimized in a targeted manner, and the optimization efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the technical field of signal connector molding process, and specifically to a method for preparing a connector with secondary locking. Background Technology

[0002] A connector consists of a male and a female connector that interlock to transmit signals or messages. To ensure the stable axial positioning of the outer conductor and terminals inside the housing, a secondary locking mechanism is often added to the outside of the housing to limit the axial movement of the outer conductor.

[0003] In existing technologies, connector manufacturing processes are often completed through a combination of automated assembly line production and manual labor. However, this approach still has the following drawbacks and shortcomings in practical applications: 1) The production line cannot detect the straightness of the cable during the production process. Therefore, once the cable deflection occurs, the process location where the deflection occurs cannot be accurately determined, and the corresponding process cannot be improved and optimized in a targeted manner, thus reducing the optimization efficiency. 2) Terminal crimping process and parameters can optimize connection performance. By effectively reducing friction and stress during the crimping process, the stability and durability of the connection can be ensured. In addition, the reliability of the connection can be improved, preventing the connector from loosening or falling off during use. However, the existing technology lacks sufficient testing measures for various crimping parameters after the terminal crimping process is completed. Once a deviation occurs, it will affect the stability of the connection effect and the stability of signal transmission. 3) The existing technology does not adequately consider the installation position of the shielding ring, and the preset spacing reserved for the shielding ring is insufficient, which affects the crimping effect of the shielding ring, affects the crimping stability of the shielding ring, and thus affects the overall quality and service life of the connector.

[0004] 4) The existing technology does not make high use of the braided layer. When crimping the terminals, the excess braided layer is directly removed, which can neither enhance the shielding effect of the shielding ring nor provide effective support for the shielding ring.

[0005] Therefore, there is an urgent need to provide a method for manufacturing connectors to address the defects and shortcomings of the existing technology. Summary of the Invention

[0006] To address the defects and shortcomings of existing technologies, this invention provides a method for manufacturing a connector with a secondary locking mechanism.

[0007] The specific solution provided by this invention is as follows: A method for manufacturing a connector with a secondary locking mechanism, characterized by comprising the following steps: S100: The cable is stripped. S200: Press the shielding ring onto the outer periphery of the braided layer, then peel the braided layer in the reverse direction and cover the outer periphery of the shielding ring; S300: Perform a flatness test on the position of the shielding ring after crimping; S400: The terminal is crimped to the outside of the inner core wire of the cable; S500: Sampling inspection of the cable cross-section after crimping; S600: Inspect the straightness of the cable after crimping; S700: Insert the terminal into the preset position inside the outer conductor and crimp it; S800: Insert the outer conductor into the housing and position it in the preset location; S900: A secondary lock is installed on the outside of the housing to achieve axial positioning of the outer conductor inside the housing.

[0008] As a further preferred embodiment of the present invention, step S100 includes the following steps: S101: Cut the cable sheath, peel off the cut cable sheath axially, and wrap the braided layer back onto the outer periphery of the cable sheath; S102: Continue cutting the aluminum foil and insulation layer inside the braided layer until the internal core wire is exposed; S103: Ensure that the length relationship of the cut braided layer, aluminum foil, insulation layer and core wire meets L0>L1>L3>L2, where L0 is the length of the cut braided layer, L1 is the length of the cut aluminum foil, L2 is the length of the cut insulation layer and L3 is the length of the cut core wire.

[0009] As a further preferred embodiment of the present invention, step S200 includes the following steps: S201: Peel the braided layer sheath and cover the outer periphery of the aluminum foil; S202: Place the shielding ring on the outer periphery of the braided layer at a distance of the first axial spacing A1 from the end of the sheath, and determine and confirm that the first axial spacing A1 meets the preset requirements; S203: Press the shielding ring onto the outer periphery of the braided layer; S204: Reverse the excess braided layer to cover the outer periphery of the shielding ring; S205: Inspect and confirm that the braided layer can completely cover the shielding ring in the axial direction.

[0010] As a further preferred embodiment of the present invention, step S300 includes the following steps: detecting and confirming that the radial deflection angle of the shielding ring position after crimping does not exceed a preset maximum angle.

[0011] As a further preferred embodiment of the present invention, step S400 includes the following steps: S401: Place the terminal outside the core wire and at a distance of the second axial spacing B1 from the end of the insulation layer, and determine and confirm that the second axial spacing B1 meets the preset requirements; S402: Crim the terminal to the outside of the core wire, and ensure that the crimping length B2 between the terminal and the core wire meets the preset requirements; S403: A flared opening is formed on the outside of the terminal crimping position. The outer end axial length B3 and the inner end axial length B4 of the flared opening are tested and confirmed to meet the preset requirements. S404: Inspect the terminal cutting edge position to confirm that the radial dimension B5 of the burr at the cutting edge position and the axial dimension B6 of the cutting edge meet the preset requirements.

[0012] As a further preferred embodiment of the present invention, step S500 includes the following steps: S501: Inspect the cross-sectional shape of the cable after crimping; S502: Inspect the cross-sectional parameters of the cable after crimping; S503: If both steps S501 and S502 pass the test, proceed to the next step; if either step S501 or S502 fails, the test is deemed unqualified.

[0013] As a further preferred embodiment of the present invention, step S600 includes the following steps: S601: Detect and confirm that the radial deflection angle of the cable and terminal connection position after crimping does not exceed the preset maximum angle; S602: Detect and confirm that the radial deflection angle of the connection position between the cable and the insulation layer after crimping does not exceed the preset maximum angle.

[0014] As a further preferred embodiment of the present invention, step S700 includes the following steps: S701: Insert the terminal into the preset position inside the outer conductor; S702: The terminal is fixed in its current position inside the outer conductor by crimping; S703: Inspect and confirm that the outer diameter of the terminal after crimping meets the preset requirements.

[0015] As a further preferred embodiment of the present invention, step S800 includes the following steps: 1) During the process of inserting the outer conductor into the preset position inside the shell, the locking mechanism of the outer conductor needs to be successfully triggered to emit a sound; 2) After the outer conductor is inserted into the preset position inside the housing, the following conditions must be met: the collar of the outer conductor is located in the stop cavity inside the housing, and the outer conductor is fixed in the stop cavity inside the housing without any looseness or shaking.

[0016] As a further preferred embodiment of the present invention, step S900 includes the following steps: 1) During the process of inserting the secondary lock into the preset position on the outside of the housing, the locking mechanism of the secondary lock needs to be successfully triggered to make a sound; 2) After the secondary lock is installed in the preset position on the outside of the housing, it must meet the following requirements: the secondary lock is fixed in the preset position on the outside of the housing and there is no looseness or shaking.

[0017] Compared with existing technologies, the technical effects that this invention can achieve include: 1) This invention provides a method for manufacturing a connector with a secondary locking mechanism. The method involves detecting the straightness of the shielding ring after crimping and the straightness of the cable after crimping. This allows for a direct understanding of the process location where the cable deflects, and thus the possible causes of the deflection. This facilitates targeted improvement and optimization of the corresponding process, effectively increasing optimization efficiency.

[0018] 2) This invention provides a method for manufacturing a connector with a secondary locking mechanism. By detecting and confirming that the crimping parameters such as the crimping length and the flare parameters meet the preset requirements, the connection effect stability is guaranteed while the signal transmission stability is improved.

[0019] 3) This invention provides a method for manufacturing a connector with a secondary locking mechanism. By placing the shielding ring on the outer periphery of the braided layer at a first axial distance from the end of the sheath and placing the terminal on the outer side of the core wire at a second axial distance from the end of the insulation layer, on the one hand, axial deformation space and connection support can be provided for the reverse sleeve of the braided layer, and on the other hand, it is also convenient to achieve a stable fixing effect when the shielding ring is crimped, avoiding unexpected deformation and damage to the braided layer. In addition, by setting the first axial distance and the second axial distance, the difference between the axial length of the shielding ring and the axial length of the installation position can also be balanced, ensuring that the shielding ring is evenly and stably arranged in the axial direction, thereby improving the uniformity and stability of signal shielding.

[0020] 4) This invention provides a method for manufacturing a connector with a secondary locking mechanism. By peeling the braided layer in the reverse direction and covering the outer periphery of the shielding ring, it is detected and confirmed that the braided layer can completely cover the shielding ring in the axial direction, thereby making effective use of the excess braided layer. The design of double braided layers located on the inner and outer sides of the shielding ring in the radial direction effectively enhances the shielding effect. At the same time, the braided layer can effectively support the shielding ring. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connector provided by the present invention.

[0022] Figure 2 The structural breakdown diagram of the connector provided by this invention.

[0023] Figure 3 This is a schematic diagram of the structure during step S100 of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure during step S200 of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure during step S400 of the present invention.

[0026] Figure 6 This is an enlarged view of the cutting nozzle position during step S400 of the present invention.

[0027] Figure 7 This is a schematic diagram of the cable cross-section during step S500 of the present invention.

[0028] Figure 8 This is a structural diagram of step S700 of the present invention.

[0029] Figure 9 This is a structural cross-sectional view of steps S800-S900 of the present invention. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] [First Embodiment] like Figure 1-2 The present invention provides a connector with a secondary locking mechanism, comprising a cable 1, a terminal 2, an outer conductor 3, a shielding ring 4, a housing 5, and a secondary locking mechanism. The front end of the cable 1 is connected to the terminal 2, and the front end of the terminal 2 extends into and is pressed into the outer conductor 3. The outer periphery of the cable 1 is fitted with a shielding ring 4, which is pressed between the end face of the outer conductor 3 and the outer periphery of the cable 1. The outer conductor 3 passes through and is positioned inside the housing 5. A secondary locking mechanism 6 is inserted into the outer side of the housing 5 to achieve axial positioning of the outer conductor 3 inside the housing 5.

[0034] like Figure 3 As shown, in this embodiment, the cable 1 includes an outer sheath 11, a braided layer 12 and an aluminum foil 13 from the outside to the inside. An insulating part 14 is also provided inside the aluminum foil 13, and a core wire 15 is provided inside the insulating part.

[0035] like Figure 3-9 The figure shows a method for manufacturing a connector with a secondary locking mechanism according to the first embodiment of the present invention, which includes the following steps: S100: Cable stripping; including the following steps: S101: Cut the cable sheath, axially peel off the cut cable sheath, and reverse the braided layer to wrap around the outer perimeter of the cable sheath, such as... Figure 3 As shown; S102: Continue cutting the aluminum foil and insulation layer inside the braided layer until the internal core wire is exposed; S103: Ensure that the length relationship of the cut braided layer, aluminum foil, insulation layer and core wire meets L0>L1>L3>L2, where L0 is the length of the cut braided layer, L1 is the length of the cut aluminum foil, L2 is the length of the cut insulation layer and L3 is the length of the cut core wire.

[0036] Since the braided layer 12 needs to be reversed and fitted onto the outer periphery of the sheath 11 (away from the core wire direction) to avoid interference with the subsequent wire stripping process, the braided layer 12 needs to be reset and cover the outer periphery of the aluminum foil (closer to the core wire direction) before the shielding ring 4 is crimped. After the shielding ring 4 is crimped, the braided layer 12 is reversed and fitted onto the outer periphery of the shielding ring 4. This design of a double braided layer located radially inside and outside the shielding ring effectively enhances the shielding effect. At the same time, the braided layer can effectively support the shielding ring. Therefore, the length of the braided layer 12 needs to be set as long as possible to achieve a double-layer coverage effect. Furthermore, subsequent steps... To crimp the terminals onto the outer periphery of the core wire 15, sufficient length of the core wire 15 needs to be reserved to facilitate the crimping process. The insulation layer only provides axial restraint during the crimping process, so its axial length can be appropriately reduced. Since the shielding ring 4 needs to be crimped onto the outer periphery of the braided layer 14 and the aluminum foil 13, sufficient aluminum foil length needs to be ensured to improve the crimping stability and firmness of the shielding ring. In this embodiment, its length range typically satisfies 16mm≤L0, 7.0mm≤L1≤7.5mm, 1.3mm≤L2≤1.7mm, and 3.5mm≤L3≤4.5mm.

[0037] S200: Press the shielding ring onto the outer periphery of the braided layer, then peel the braided layer in the reverse direction and cover the outer periphery of the shielding ring; (e.g.) Figure 4 As shown, it includes the following steps: S201: Peel the braided layer off the sheath 11 and cover the outer periphery of the aluminum foil 13 to reset the braided layer 12 that was reversed and wrapped around the outer periphery of the sheath 11 in the previous step. S202: Place the shielding ring 4 on the outer periphery of the braided layer 12 at a distance of the first axial distance A1 from the end of the sheath, and determine and confirm that the first axial distance A1 meets the preset requirements. Since the braided layer 12 will inevitably be deformed radially during the pressing process of the shielding ring 4, the setting of the first axial distance A1 can provide axial deformation space and connection support for the reverse sleeve of the braided layer 12, and also facilitate the stable fixing effect of the shielding ring 4 during pressing, avoiding unexpected deformation and damage to the braided layer 12. In addition, by setting the first axial distance, the difference between the axial length of the shielding ring and the axial length of the installation position can also be balanced, ensuring that the shielding ring is evenly and stably arranged in the axial direction, thereby improving the uniformity and stability of signal shielding. S203: Press the shielding ring onto the outer periphery of the braided layer so that the braided layer 12 is located inside the shielding ring 4 to form the first shielding layer; S204: The excess braided layer is reversed and covered on the outer periphery of the shielding ring so that the excess braided layer 12 is located outside the shielding ring 4 to form a second shielding layer; the design of double braided layers located on the inner and outer sides of the shielding ring in the radial direction effectively enhances the shielding effect, and at the same time, the braided layer can effectively support the shielding ring; S205: Inspect and confirm that the braided layer can completely cover the shielding ring in the axial direction to ensure uniform and stable shielding effect.

[0038] S300: Perform a flatness test on the position of the shielding ring after crimping; including the following steps: detect and confirm that the radial deflection angle of the position of the shielding ring after crimping does not exceed a preset maximum angle. In this embodiment, the preset maximum angle is 2°.

[0039] This allows for a direct visual understanding of the process location where the cable deflection occurs after the cable undergoes deformation. It also reveals the possible causes of the deformation, facilitating targeted improvements and optimizations to the corresponding processes and effectively increasing optimization efficiency.

[0040] S400: The terminal is crimped to the outside of the inner core wire of the cable; such as... Figure 5 As shown, it includes the following steps: S401: Place the terminal outside the core wire and at a distance of the second axial distance B1 from the end of the insulation layer, and determine and confirm that the second axial distance B1 meets the preset requirements; by setting the second axial distance B1 outside the core wire and at a distance of the end of the insulation layer, on the one hand, axial temporary space can be provided for the reverse application of the braided layer; since the braided layer needs to be reversed first (i.e., away from the direction of the core wire and terminal) to avoid possible interference during wire stripping, and when pressing the shielding ring later, the braided layer needs to be reversed again (i.e., closer to the direction of the terminal and core wire) so that the shielding ring is pressed onto the outside of the braided layer 12, and then on the shielding ring 4 After crimping, the braided layer 12 is reversed (away from the terminal and core wire direction) and fitted onto the outer periphery of the shielding ring 4. The design of the double braided layer located radially inside and outside the shielding ring effectively enhances the shielding effect. At the same time, the braided layer can effectively support the shielding ring, thus providing axial temporary space for the braided layer. In addition, the setting of this second axial spacing can also balance the difference between the axial length of the shielding ring and the axial length of the installation position (for example, when the actual axial length of the installation position is less than the axial length of the shielding ring), ensuring that the shielding ring 4 is evenly and stably arranged in the axial direction, thereby improving the uniformity and stability of signal shielding. S402: Crim the terminal to the outside of the core wire, and ensure that the crimping length B2 between the terminal and the core wire meets the preset requirements; to ensure sufficient connection reliability and connection stability. In this embodiment, the crimping length B2 needs to meet B2≥2.7mm. S403: A flared opening is formed on the outside of the terminal crimping position. The outer axial length B3 and inner axial length B4 of the flared opening are tested and confirmed to meet the preset requirements. Since the design of the terminal flared opening can protect the core wire 15 from breakage and damage during crimping, it can also disperse crimping stress, improve durability, reduce loosening, and thus improve connection reliability. It can also achieve auxiliary heat dissipation and avoid the risk of local overheating when current passes through. Therefore, the outer axial length B3 and inner axial length B4 of the flared opening need to be tested respectively. In this embodiment, the outer axial length B3 and inner axial length B4 of the flared opening need to meet the following requirements: B3≤0.25mm, 0.3≤B4≤0.9mm. S404: Inspect the terminal cutting edge position to confirm that the radial dimension B5 of the burr and the axial dimension B6 of the cutting edge meet the preset requirements; Figure 6 As shown, the radial dimension B5 and axial dimension B6 of the burr at the cutting nozzle are confirmed to meet the preset requirements. To ensure that the cutting nozzle will not cause unexpected damage to the cable during operation due to residual burrs, and that the cutting nozzle will not cause circuit risks such as breakdown due to internal burrs if it is too short, nor will it cause excessive breakage risk if it is too long, the radial dimension B5 and axial dimension B6 of the burr at the cutting nozzle need to be detected accordingly. In this embodiment, the radial dimension B5 and axial dimension B6 of the burr at the cutting nozzle need to satisfy B5≤0.08mm and 0<B6≤0.2mm.

[0041] By checking the crimping parameters such as crimping length and the horn opening parameters, it is confirmed that the preset requirements are met, thereby ensuring the stability of the connection effect and improving the stability of signal transmission.

[0042] S500: Sampling inspection of the cable cross-section after crimping; such as Figure 7 As shown, it includes the following steps: S501: Inspect the cross-sectional shape of the cable after crimping to ensure that the cross-sectional shape of the cable after crimping is B-shaped; S502: The cross-sectional parameters of the cable after crimping are tested to ensure that the dimensional accuracy of the cable cross-section after crimping meets the preset requirements. In this embodiment, the cross-sectional dimensions of the cable after crimping meet the following requirements: the cross-sectional width JK is 1.28mm≤JK≤1.42mm; the cross-sectional height JH is 0.75mm≤JH≤0.85mm. S503: If both steps S501 and S502 pass the test, proceed to the next step; if either step S501 or S502 fails, the test is deemed unqualified.

[0043] S600: Inspect the straightness of the cable after crimping; including the following steps: S601: Detect and confirm that the radial deflection angle of the cable and terminal connection position after crimping does not exceed the preset maximum angle; in this embodiment, the preset maximum angle is 2°; S602: Detect and confirm that the radial deflection angle of the connection position between the cable and the insulation layer after crimping does not exceed the preset maximum angle; in this embodiment, the preset maximum angle is 2°; This allows for a direct visual understanding of the process location where the cable deflection occurs after the cable undergoes deformation. It also reveals the possible causes of the deformation, facilitating targeted improvements and optimizations to the corresponding processes and effectively increasing optimization efficiency.

[0044] S700: Insert the terminal into the preset position inside the outer conductor and crimp it; including the following steps: S701: Insert the terminal into the preset position inside the outer conductor; S702: The terminal is fixed in its current position inside the outer conductor by crimping; S703: Inspect and confirm that the outer diameter of the crimped terminal meets the preset requirements, such as... Figure 8 As shown, in this embodiment, the terminal cross-sectional dimensions after crimping satisfy the following: the outer diameter R of the cross-section satisfies: 3.75mm≤R≤3.95mm; S800: Insert the outer conductor into the housing and position it at a preset location; including the following steps: 1) During the process of inserting the outer conductor into the preset position inside the shell, the locking mechanism of the outer conductor needs to be successfully triggered to emit a sound; 2) After the outer conductor is inserted into the preset position inside the housing, the following conditions must be met: the collar of the outer conductor is located in the stop cavity inside the housing, and the outer conductor is fixed in the stop cavity inside the housing without any looseness or shaking; so as to ensure that the outer conductor 3 actually triggers the locking effect of the housing 5 on the outer conductor 3 during the insertion process, thereby ensuring the axial positioning stability of the outer conductor 3 inside the housing 5. At this point, even without setting a secondary lock 6, the axial positioning stability of the outer conductor 3 inside the outer casing 5 can be achieved. S900: A secondary lock is installed on the outside of the housing to achieve axial positioning of the outer conductor inside the housing; including the following steps: 1) During the process of inserting the secondary lock into the preset position on the outside of the housing, the locking mechanism of the secondary lock needs to be successfully triggered to emit a sound; this ensures that the secondary lock 6 is indeed locked by the housing 5 during insertion, further ensuring the axial positioning stability of the outer conductor 3 inside the housing 5, for example, by... Figure 9 The sound produced by the insertion and locking action between the outer side of the inner shell 5 insertion slot 51 and the locking part 61 of the secondary lock 6; 2) After the secondary lock is installed in the preset position on the outside of the housing, it must meet the following requirements: the secondary lock is fixed in the preset position on the outside of the housing and there is no looseness or shaking. At this point, the axial positioning stability of the outer conductor 3 inside the outer casing 5 is further ensured by adding a secondary lock 6.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A method for manufacturing a connector with a secondary locking mechanism, characterized in that: Includes the following steps: S100: The cable is stripped. S200: Press the shielding ring onto the outer periphery of the braided layer, then peel the braided layer in the reverse direction and cover the outer periphery of the shielding ring; S300: Perform a flatness test on the position of the shielding ring after crimping; S400: The terminal is crimped to the outside of the inner core wire of the cable; S5 00: Sampling inspection of the cable cross-section after crimping; S600: Inspect the straightness of the cable after crimping; S700: Insert the terminal into the preset position inside the outer conductor and crimp it; S800: Insert the outer conductor into the housing and position it in the preset location; S900: A secondary lock is installed on the outside of the housing to achieve axial positioning of the outer conductor inside the housing.

2. The method for manufacturing a connector with secondary locking according to claim 1, characterized in that: Step S100 includes the following steps: S101: Cut the cable sheath, peel off the cut cable sheath axially, and wrap the braided layer back onto the outer periphery of the cable sheath; S102: Continue cutting the aluminum foil and insulation layer inside the braided layer until the internal core wire is exposed; S103: Ensure that the length relationship of the cut braided layer, aluminum foil, insulation layer and core wire meets L0>L1>L3>L2, where L0 is the length of the cut braided layer, L1 is the length of the cut aluminum foil, L2 is the length of the cut insulation layer and L3 is the length of the cut core wire.

3. The method for manufacturing a connector with secondary locking according to claim 2, characterized in that: Step S200 includes the following steps: S201: Peel the braided layer sheath and cover the outer periphery of the aluminum foil; S202: Place the shielding ring on the outer periphery of the braided layer at a distance of the first axial spacing A1 from the end of the sheath, and determine and confirm that the first axial spacing A1 meets the preset requirements; S203: Press the shielding ring onto the outer periphery of the braided layer; S204: Reverse the excess braided layer to cover the outer periphery of the shielding ring; S205: Inspect and confirm that the braided layer can completely cover the shielding ring in the axial direction.

4. The method for manufacturing a connector with secondary locking according to claim 1, characterized in that: Step S300 includes the following steps: detecting and confirming that the radial deflection angle of the shielding ring position after crimping does not exceed the preset maximum angle.

5. The method for manufacturing a connector with secondary locking according to claim 2, characterized in that: Step S400 includes the following steps: S401: Place the terminal outside the core wire and at a distance of the second axial spacing B1 from the end of the insulation layer, and determine and confirm that the second axial spacing B1 meets the preset requirements; S402: Crim the terminal to the outside of the core wire, and ensure that the crimping length B2 between the terminal and the core wire meets the preset requirements; S403: A flared opening is formed on the outside of the terminal crimping position. The outer end axial length B3 and the inner end axial length B4 of the flared opening are tested and confirmed to meet the preset requirements. S404: Inspect the terminal cutting edge position to confirm that the radial dimension B5 of the burr at the cutting edge position and the axial dimension B6 of the cutting edge meet the preset requirements.

6. The method for manufacturing a connector with secondary locking according to claim 1, characterized in that: Step S500 includes the following steps: S501: Inspect the cross-sectional shape of the cable after crimping; S502: Inspect the cross-sectional parameters of the cable after crimping; S503: If both steps S501 and S502 pass the test, proceed to the next step; if either step S501 or S502 fails, the test is deemed unqualified.

7. The method for manufacturing a connector with secondary locking according to claim 1, characterized in that: Step S600 includes the following steps: S601: Detect and confirm that the radial deflection angle of the cable and terminal connection position after crimping does not exceed the preset maximum angle; S602: Detect and confirm that the radial deflection angle of the connection position between the cable and the insulation layer after crimping does not exceed the preset maximum angle.

8. The method for manufacturing a connector with secondary locking according to claim 1, characterized in that: Step S700 includes the following steps: S701: Insert the terminal into the preset position inside the outer conductor; S702: The terminal is fixed in its current position inside the outer conductor by crimping; S703: Inspect and confirm that the outer diameter of the terminal after crimping meets the preset requirements.

9. The method for manufacturing a connector with secondary locking according to claim 1, characterized in that: Step S800 includes the following steps: 1) During the process of inserting the outer conductor into the preset position inside the shell, the locking mechanism of the outer conductor needs to be successfully triggered to emit a sound; 2) After the outer conductor is inserted into the preset position inside the housing, the following conditions must be met: the collar of the outer conductor is located in the stop cavity inside the housing, and the outer conductor is fixed in the stop cavity inside the housing without any looseness or shaking.

10. The method for manufacturing a connector with secondary locking according to claim 1, characterized in that: Step S900 includes the following steps: 1) During the process of inserting the secondary lock into the preset position on the outside of the housing, the locking mechanism of the secondary lock needs to be successfully triggered to make a sound; 2) After the secondary lock is installed in the preset position on the outside of the housing, it must meet the following requirements: the secondary lock is fixed in the preset position on the outside of the housing and there is no looseness or shaking.

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