A rotary disc type photovoltaic plug and socket assembly production line

Abstract

The application discloses a rotary disc type photovoltaic connector head assembling production line, and belongs to the technical field of photovoltaic connector joint assembling, which comprises a dividing disc, a main body shell loading station, a sealing plug assembling station, a locking nut screwing station and a finished product taking station which are arranged along the circumferential direction of the dividing disc in sequence, a plurality of positioning jigs are uniformly arranged on the top of the dividing disc along the circumferential direction, and the positioning jigs are provided with positioning holes; when the locking nut screwing process drives the main body shell to have a rotating trend, the elastic force borne by the transmission shaft needs to be overcome, therefore, the elastic force of the transmission shaft can be utilized to effectively circumferentially lock the main body shell, so that the locking nut can be stably screwed at the external thread of the main body shell, and in addition, the implementation of the structure is not limited by the size of the main body shell; for main body shells with different sizes, the first positioning column and the second positioning column can be utilized to effectively lock the main body shell.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic connector assembly technology, and in particular to a rotary photovoltaic connector male and female assembly production line. Background Technology

[0002] Photovoltaic connectors, both male and female, are core components in photovoltaic systems that enable rapid DC electrical connection and disconnection. They are widely used for cable connections between photovoltaic modules, combiner boxes, and inverters.

[0003] With the large-scale and standardized development of the photovoltaic industry, the market has placed higher demands on the production capacity and product consistency of photovoltaic connectors. Automated assembly equipment has gradually replaced manual and semi-automated operations, becoming the mainstream of industry production. Among them, rotary assembly lines are widely used in the mass production of photovoltaic connectors due to their advantages such as compact workstation layout and efficient process connection.

[0004] In the existing rotary photovoltaic wiring male and female assembly production line, the lack of an effective circumferential positioning and anti-rotation mechanism for the main body shell during the tightening of the locking nut makes it easy for the main body shell to rotate along with the nut. This rotational offset will cause the locking nut to not be tightened properly, thereby increasing the amount of extra work for subsequent rework and reassembly, which restricts the overall yield and production efficiency of the production line.

[0005] Therefore, it is necessary to provide a rotary photovoltaic wiring male and female connector assembly line to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a rotary photovoltaic wiring male and female connector assembly production line to solve the technical problems mentioned in the background art.

[0007] Based on the above ideas, the present invention provides the following technical solution: a rotary photovoltaic connector male and female assembly production line, including an indexing rotary table and a main body shell feeding station, a sealing plug assembly station, a locking nut tightening station and a finished product picking station arranged sequentially along the circumference of the indexing rotary table. Multiple sets of positioning fixtures are evenly distributed on the top of the indexing rotary table along the circumference. The positioning fixtures are provided with positioning holes. A base that can move along the axis of the positioning hole is provided in the positioning hole. The base is provided with a first positioning post and a second positioning post for circumferentially limiting the main body shell of the photovoltaic connector male and female.

[0008] A drive assembly is provided below the base. The drive assembly is used to drive the first positioning post and the second positioning post to move away from each other at the same angular velocity and fit against the convex rib side of the main body shell, thereby achieving circumferential locking of the main body shell.

[0009] As a further aspect of the present invention: the base is elastically fitted with the positioning fixture along the axial direction of the positioning hole. During the process of the main body shell being inserted into the positioning hole of the positioning fixture and the base moving downward, the driving component is released and drives the first positioning post and the second positioning post to move away from each other at the same angular velocity.

[0010] As a further aspect of the present invention: the driving component includes a first bevel gear ring, a second bevel gear ring, and an active bevel gear disposed between the first bevel gear ring and the second bevel gear ring and meshing with both of them simultaneously. The first bevel gear ring and the second bevel gear ring are arranged along the axial direction of the positioning hole and can move synchronously with the base. The first positioning post is fixed to the first bevel gear ring, and the second positioning post is fixed to the second bevel gear ring.

[0011] As a further aspect of the present invention: a drive shaft is arranged along the diameter direction of the positioning hole, the drive shaft can move synchronously with the base, a slider is slidably arranged on the positioning fixture, the drive shaft passes through the slider and the drive shaft is elastically engaged with the slider along its own circumference, and the active bevel gear is coaxially arranged with the drive shaft and fixedly installed at the end of the drive shaft.

[0012] As a further embodiment of the present invention: a positioning rod is hinged to one side of the positioning fixture, a protrusion is fixed on the outer circular surface of the transmission shaft, a limit block is provided on the side of the positioning rod away from the protrusion, and the limit block is fixedly connected to the positioning fixture.

[0013] As a further aspect of the present invention: a driven bevel gear is fixedly sleeved at one end of the transmission shaft located outside the positioning fixture, and a bevel rack is arranged in the path of the driven bevel gear rotating with the indexing turntable, so that the driven bevel gear can mesh with the bevel rack during the rotation of the indexing turntable.

[0014] As a further embodiment of the present invention: a guide post is fixed to the bottom of the base, and a square groove is provided on the bottom end face of the guide post; a vertical rod is fixed to the bottom of the positioning hole, and the top end of the vertical rod extends into the square groove and slides therein.

[0015] As a further aspect of the present invention: an elastic element is sleeved on the outer side of the guide post, and the elastic element is located between the bottom of the positioning hole and the base.

[0016] As a further aspect of the present invention: the bevel rack is located between the locking nut tightening station and the finished product picking station.

[0017] Compared with the prior art, the beneficial effects of the present invention are: when the locking nut causes the main body shell to rotate during the tightening process, it is necessary to overcome the elastic force on the transmission shaft. Therefore, the elastic force of the transmission shaft can be used to effectively lock the main body shell in a circumferential manner, ensuring that the locking nut can be stably tightened at the external thread of the main body shell. At the same time, the implementation of this structure is not limited by the size of the main body shell. For main body shells of different sizes, effective locking can be achieved through the first positioning post and the second positioning post. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the position of the bevel rack of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation of the main body shell and the positioning fixture of the present invention;

[0022] Figure 4 This is a schematic diagram of the drive component structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the first bevel gear ring and the first positioning post, and between the second bevel gear ring and the second positioning post of the present invention.

[0024] Figure 6 This is a schematic diagram showing the cooperation between the first positioning post, the second positioning post, and the protruding ribs on both sides of the main body shell of the present invention;

[0025] Figure 7 This is the present invention. Figure 2 A magnified structural diagram at point A;

[0026] Figure 8 This is a schematic diagram of the limiting component structure of the present invention.

[0027] In the diagram: 1. Main body shell loading station; 2. Sealing plug assembly station; 3. Locking nut tightening station; 4. Finished product unloading station; 5. Indexing turntable; 6. Fixed plate; 7. Positioning fixture; 701. Groove; 702. Limiting block; 8. Main body shell; 801. External thread; 802. Protruding rib; 9. Bevel rack; 10. Limiting component; 11. Positioning rod; 12. Drive shaft; 1201. Protrusion; 13. Slider; 14. First bevel gear ring; 1401. First positioning post; 15. Second bevel gear ring; 1501. Second positioning post; 1502. Connecting component; 16. Base; 1601. Guide groove; 17. Fixing component; 18. Elastic component; 19. Guide post; 1901. Square groove; 20. Connecting plate; 21. Driving bevel gear; 22. Driven bevel gear. Detailed Implementation

[0028] Example 1:

[0029] like Figures 1-8 As shown, a rotary photovoltaic connector assembly production line includes an indexing turntable 5 and a main body shell feeding station 1, a sealing plug assembly station 2, a locking nut tightening station 3, and a finished product unloading station 4 arranged sequentially along the circumference of the indexing turntable 5.

[0030] Each workstation uses a cylinder-driven pneumatic clamp to achieve precise horizontal and vertical displacement, in order to clamp and transport components such as the main shell 8, sealing plugs, and locking nuts; the directional conveying of materials is achieved through an automatic vibratory feeder system.

[0031] Multiple sets of positioning fixtures 7 are evenly arranged along the circumference of the top of the indexing turntable 5 to support the workpieces to be assembled. At the main body shell loading station 1, a pneumatic clamp grips the main body shell 8 of the photovoltaic connector and accurately places it into the positioning holes of the positioning fixtures 7. The indexing turntable 5 is driven by a servo motor in conjunction with a cam divider, enabling high-precision intermittent indexing and ensuring that the positioning fixtures 7 arrive stably and sequentially below each assembly station.

[0032] When the indexing turntable 5 drives the positioning fixture 7 to rotate to the sealing plug assembly station 2, the cylinder and the fixture work together to press the sealing plug into the preset installation position of the main body shell 8.

[0033] When the positioning fixture 7 rotates with the indexing turntable 5 to the locking nut tightening station 3, the fixture first moves the locking nut to the end of the main body shell 8, and then the drive motor drives the fixture to rotate, completing the threaded connection between the locking nut and the main body shell 8.

[0034] The basic drive and feeding structure of the above workstations are mature automation technologies, and will not be described in detail here.

[0035] At the locking nut tightening station 3, in order to avoid the main body shell 8 rotating synchronously with the locking nut during the tightening operation and causing the problem of incomplete tightening, this solution provides a base 16 in the positioning hole of the positioning fixture 7. The base 16 can reciprocate relative to the positioning fixture 7 along the axial direction of the positioning hole, and the base 16 is equipped with a first positioning post 1401 and a second positioning post 1501 for circumferentially limiting the main body shell 8, thereby realizing the rotational constraint of the main body shell 8.

[0036] Furthermore, a drive assembly is provided below the base 16 to cooperate with the first positioning post 1401 and the second positioning post 1501. When the main body shell 8 is inserted into the positioning hole of the positioning fixture 7 and the base 16 is moved downward, the drive assembly is triggered and drives the first positioning post 1401 and the second positioning post 1501 to move away from each other at the same angular velocity until the first positioning post 1401 and the second positioning post 1501 are both attached to one side of the protruding rib 802 of the main body shell 8. At this time, the circumferential direction of the main body shell 8 is effectively locked, which can effectively prevent the main body shell 8 from rotating synchronously during the tightening of the locking nut, and ensure that the locking nut is tightened accurately.

[0037] The drive assembly includes a first bevel gear ring 14 and a second bevel gear ring 15 with the same diameter and module, and a drive bevel gear 21 disposed between the first bevel gear ring 14 and the second bevel gear ring 15 and meshing with both of them simultaneously. Figures 4-6 The first bevel gear ring 14 and the second bevel gear ring 15 are arranged along the axial direction of the positioning hole and are both located below the base 16. Both the first bevel gear ring 14 and the second bevel gear ring 15 can move synchronously with the base 16. The first positioning post 1401 is fixed to the first bevel gear ring 14, while the second positioning post 1501 is fixed to the second bevel gear ring 15. With this structure, when the driving bevel gear 21 is rotated, the first bevel gear ring 14 and the second bevel gear ring 15 can rotate synchronously in opposite directions, thereby driving the first positioning post 1401 and the second positioning post 1501 to rotate synchronously in opposite directions at the same angular velocity.

[0038] Furthermore, a drive shaft 12 is arranged along the diameter direction of the positioning hole. The drive shaft 12 can move synchronously with the base 16 along the axis of the positioning hole. A slider 13 is slidably mounted on the positioning fixture 7, and the slider 13 can move relative to the positioning fixture 7 along the axis of the positioning hole. The drive shaft 12 passes through the slider 13 and rotates with it. The drive shaft 12 also elastically engages with the slider 13 along its own circumference. Specifically, the slider 13 can be provided with a stepped hole that engages with the drive shaft 12. On the one hand, this facilitates the rotational engagement of the drive shaft 12 and the slider 13 through bearings. On the other hand, a torsion spring or coil spring can be sleeved on the outside of the drive shaft 12, and the two ends of the torsion spring or coil spring are respectively connected to the drive shaft 12 and the slider 13, so that the drive shaft 12 and the slider 13 are elastically engaged. The driving bevel gear 21 is coaxially arranged with the drive shaft 12 and fixedly installed at the end of the drive shaft 12.

[0039] Furthermore, such as Figures 3-4 The positioning fixture 7 is hinged to one side with a positioning rod 11. Specifically, a pin fixed to the side of the positioning fixture 7 passes through the top of the positioning rod 11 and rotates with it. A protrusion 1201 is fixed to the outer surface of the transmission shaft 12. (Refer to...) Figure 3 As shown, a limiting block 702 is provided on the side of the positioning rod 11 away from the protrusion 1201, and the limiting block 702 is fixedly connected to the positioning fixture 7.

[0040] Initially, the protrusion 1201 is attached to the side of the positioning rod 11 away from the limiting block 702, so that the transmission shaft 12 can remain stable. When the base 16 moves downward and the protrusion 1201 is misaligned with the positioning rod 11, the transmission shaft 12 can move along its own circumference under elastic force. Figure 3 Rotate in the direction X shown.

[0041] In summary, when the main housing 8 is inserted into the positioning hole and drives the base 16 to move downwards along the positioning hole, causing the protrusion 1201 to be misaligned with the positioning rod 11, the transmission shaft 12 can drive the active bevel gear 21 to rotate. Through the meshing transmission of the active bevel gear 21 with the first bevel gear ring 14 and the second bevel gear ring 15, the first positioning post 1401 and the second positioning post 1501 can be driven to move away from each other at the same angular velocity. Figures 5-6 As shown, when the first positioning post 1401 and the second positioning post 1501 rotate in a direction away from each other and eventually come into contact with the protruding ribs 802 on both sides of the main body shell 8, the limiting effect of the protruding ribs 802 can prevent the first positioning post 1401 and the second positioning post 1501 from continuing to rotate, thereby keeping the main body shell 8 in a circumferentially locked state.

[0042] If the locking nut causes the main housing 8 to rotate during the tightening process, the elastic force on the drive shaft 12 needs to be overcome. Therefore, the elastic force of the drive shaft 12 can be used to effectively lock the main housing 8 circumferentially, ensuring that the locking nut can be stably tightened at the external thread 801 of the main housing 8. At the same time, the implementation of this structure is not limited by the size of the main housing 8. For main housing 8 of different sizes, effective locking can be achieved through the first positioning post 1401 and the second positioning post 1501.

[0043] This structural design achieves reliable circumferential anti-rotation in the eight-step screwing process of the main shell, ensuring the screwing accuracy and assembly consistency of the locking nut, solving the assembly defect problem of the locking nut not being screwed in place, greatly reducing the product defect rate and reducing the amount of subsequent rework.

[0044] It should be noted that the ribs 802 on the main body shell 8 give its structure directionality, enabling the vibratory feeder to deliver the main body shell 8 in a directional and orderly manner, thereby ensuring that the initial insertion position of the main body shell 8 into the positioning hole is roughly uniform and will not interfere with the first positioning post 1401 and the second positioning post 1501; in addition, when the drive shaft 12 is released under elastic force and drives the active bevel gear 21 to rotate, the protrusion 1201 can be located in the lower half of the drive shaft 12, thereby avoiding interference between the protrusion 1201 and the positioning rod 11 during the reset process of the drive shaft 12.

[0045] Combination Figure 2 , Figure 7 As shown, a driven bevel gear 22 is fixedly sleeved at one end of the drive shaft 12 outside the positioning fixture 7. A bevel rack 9 is arranged on the rotation path of the driven bevel gear 22 along the indexing turntable 5. The bevel rack 9 can be regarded as a section cut from the bevel gear ring, so as to realize the effective meshing of the driven bevel gear 22 and the bevel rack 9. In one embodiment, the base 16 is elastically connected to the positioning fixture 7 along the axial direction of the positioning hole. When the fixture inserts the main body shell 8 into the positioning hole and separates from the main body shell 8, under the action of elastic force, the base 16 can drive the drive shaft 12 to move upward synchronously, so that the driven bevel gear 22 can accurately mesh with the bevel rack 9 when it rotates with the indexing turntable 5.

[0046] It should be noted that the bevel rack 9 is located between the locking nut tightening station 3 and the finished product unloading station 4. After the locking nut tightening operation is completed, during the rotation of the indexing turntable 5 and the positioning fixture 7, the driven bevel gear 22 meshes with the bevel rack 9, which can drive the transmission shaft 12 in the opposite direction. Figure 3 Rotating in the direction X as shown compresses the coil spring or torsion spring. Because the base 16 springs upward under elastic force, the protrusion 1201 can contact the positioning rod 11 during the rotation of the transmission shaft 12. When the driven bevel gear 22 and the bevel rack 9 are misaligned, the transmission shaft 12 rotates along the direction X under elastic force. Figure 3 Rotate in the direction X as shown until the protrusion 1201 is in contact with the side of the positioning rod 11 away from the limiting block 702, thereby completing the structural reset and ensuring that the positioning anti-rotation structure can be used smoothly in the next use.

[0047] Combination Figures 1-2 As shown, a fixed plate 6 is coaxially arranged above the indexing turntable 5, and multiple sets of positioning fixtures 7 are located on the outside of the fixed plate 6. The fixed plate 6 is fixed to the bracket inside the device, and the aforementioned bevel rack 9 is fixedly connected to the fixed plate 6.

[0048] like Figure 3As shown, the positioning hole is stepped, and the side of the positioning fixture 7 has a slot 701 that communicates with the positioning hole, so that the slider 13 slides in the slot 701.

[0049] Combination Figures 4-5 As shown, the first positioning post 1401 and the first bevel gear ring 14, and the second positioning post 1501 and the second bevel gear ring 15 are both fixedly connected by plate-shaped fasteners 17. A connecting plate 20 is fixed to the bottom of the base 16, and one end of the drive shaft 12 extending into the positioning hole is rotatably engaged with the connecting plate 20, so that the drive shaft 12 can move synchronously with the base 16.

[0050] To achieve the assembly and positioning of the first bevel gear ring 14 and the second bevel gear ring 15, this design provides two sets of annular guide grooves 1601 at the bottom of the base 16. The first bevel gear ring 14 has a guide member on the side closest to the base 16, while the second bevel gear ring 15 is fixedly equipped with... Figure 4 The connector 1502 shown is an arc-shaped plate structure. The guide and the end of the connector 1502 near the base 16 are slidably fitted in the guide groove 1601. It should be noted that the cross-section of the connector 1502, the guide and the guide groove 1601 in the vertical direction are all T-shaped structures, which can effectively prevent the connector 1502, the guide and the base 16 from separating.

[0051] Combination Figures 4-5 As shown, a guide post 19 is fixed to the bottom of the base 16. A square groove 1901 is formed on the bottom end face of the guide post 19. A vertical rod is fixed to the bottom of the positioning hole, and the top end of the vertical rod extends into the square groove 1901 and slides with it. This structure can effectively limit the rotation of the base 16 along its own circumference. Furthermore, the projections of the square groove 1901 and the vertical rod in the vertical plane are both T-shaped structures, which can effectively prevent the vertical rod from detaching from the guide post 19, and also limit the upward movement of the base 16, keeping it at a preset maximum upward movement value.

[0052] An elastic element 18 is sleeved on the outside of the guide post 19. The elastic element 18 can be a limiting spring, and the limiting spring is located between the bottom of the positioning hole and the base 16.

[0053] like Figure 8As shown, a limiting member 10 can be provided above the fixed plate 6. The limiting member 10 is driven by a cylinder at the top of the fixed plate 6 and can move along the diameter direction of the fixed plate 6. The limiting member 10 is correspondingly provided at the locking nut tightening position 3. When the positioning fixture 7 rotates with the indexing turntable 5 to the locking nut tightening position 3, the cylinder drives the limiting member 10 to move to the main body shell 8 and place it on the outside of the external thread 801, thereby forming an axial limit on the main body shell 8 and preventing the main body shell 8 from displacing upward during the tightening operation.

[0054] Example 2:

[0055] Example 1 primarily relies on mechanical triggering and elastic limiting to establish circumferential locking. While this effectively suppresses the synchronous rotation of the main body shell 8 during the twisting process, the locking process essentially relies on a near-equivalent judgment that the action has been triggered and the lock has been reliably formed. It lacks mechanisms for online monitoring of the locking state, early warning of abnormal locking, and dynamic access control for subsequent twisting actions. Especially when the main body shell 8 exhibits dimensional discrepancies, localized burrs on the ribs 802, insufficient downward movement of the base 16, inadequate release of the drive shaft 12, or when the first positioning post 1401 and the second positioning post 1501 only form a false or off-center contact, although the double positioning post opening action appears to have occurred, the actual circumferential locking capability is unstable, and issues such as follow-through rotation, misalignment, or incomplete twisting may still occur during the actual twisting process.

[0056] Based on this, this embodiment provides a method for assembling rotary photovoltaic connectors based on online locking determination, including:

[0057] S1. At the main body shell loading station 1, a pneumatic clamp picks up the main body shell 8 and inserts it into the positioning hole of the positioning fixture 7, causing the main body shell 8 to press the base 16 downward along the axis of the positioning hole. During this process, the displacement detection unit set at the positioning fixture 7 acquires the downward movement information of the base 16 in real time and sends the downward movement information to the control module as the basis data for subsequent judgment on whether the main body shell 8 has reached the preset pressing depth. In this step, the base 16, guide post 19, elastic element 18, and connecting plate 20 still cooperate in the existing manner of Embodiment 1.

[0058] S2. As the base 16 continues to move downwards and the protrusion 1201 and positioning rod 11 are misaligned, the drive shaft 12, under the elastic cooperation with the slider 13, releases and rotates along its own circumference. The active bevel gear 21 synchronously drives the first bevel gear ring 14 and the second bevel gear ring 15 to rotate in opposite directions, thereby driving the first positioning post 1401 and the second positioning post 1501 to move away from each other and gradually approach the protruding ribs 802 on both sides of the main body shell 8. At the same time, the angular displacement detection unit obtains the release angular displacement information of the drive shaft 12, and the control module records the corresponding time sequence data during the opening and establishment process of the first positioning post 1401 and the second positioning post 1501 to characterize whether the locking action is sufficient.

[0059] S3. After the positioning fixture 7 rotates with the indexing turntable 5 to the locking nut tightening station 3, the fixture first moves the locking nut to the end of the main body shell 8. The limiting member 10 moves to the outer side of the external thread 801 of the main body shell 8 to form an axial limit. However, in this embodiment, it does not immediately enter the formal tightening stage, but first performs a low-speed trial tightening at a preset angle. During this trial stage, the relative angle detection unit collects the slight rotation information of the main body shell 8 relative to the positioning fixture 7, and the torque detection unit collects the torque response information of the locking nut trial tightening stage. The control module makes a pre-judgment of the current locking state and the initial engagement state based on the data of this trial stage, thereby avoiding the main body shell 8, which is not reliably locked, from directly entering the high-torque formal tightening stage. The logic of formal tightening, anti-rotation and subsequent reset action in Embodiment 1 is still retained, only an online judgment step is added before formal tightening.

[0060] S4. The control module normalizes the downward displacement value of base 16 obtained in steps S1-S3. Normalized value of release angular displacement of drive shaft 12 and the normalized value of the micro-rotation angle of the main body shell 8 relative to the positioning fixture 7. A fusion calculation is performed to obtain the circumferential locking reliability X, which is used to characterize whether the first positioning post 1401 and the second positioning post 1501 have formed a reliable, symmetrical circumferential locking state for the main body shell 8 that can withstand subsequent screwing reaction forces.

[0061]

[0062] in, , and These are the weighting coefficients, and In this embodiment, This reflects the degree to which the main body shell 8 is fully pressed into the base 16. This reflects the degree to which the drive shaft 12 releases, drives the active bevel gear 21, and establishes a lock with the double locating pins. This reflects whether there is an abnormal micro-rotation trend in the main body shell 8 during the trial screwing stage. Since a smaller micro-rotation angle indicates a more complete locking, preferably, in one specific embodiment, it can be taken as follows: =0.35、 =0.40、 =0.25. The above weighting coefficients can be obtained by the control module through auxiliary training based on historical qualified and abnormal parts samples, so that the circumferential locking reliability X can more accurately reflect the actual locking quality.

[0063] S5. After obtaining the circumferential locking confidence level X, the control module further normalizes the base 16 downward displacement value obtained in steps S1-S3. Normalized value of release angular displacement of drive shaft 12 and the normalized value of torque growth rate during the trial turning stage A fusion calculation is performed to obtain the screwing initiation engagement confidence level Y, which is used to characterize whether the thread introduction is smooth, whether there is a risk of misalignment, and whether the engagement basis for entering formal screwing is available when the main body shell 8 enters the formal screwing state under the existing locked state.

[0064]

[0065] in, , and These are the weighting coefficients, and In this embodiment, the torque growth rate refers to the incremental change trend of the tightening torque of the locking nut relative to the test angle within a preset small angle range during low-speed trial tightening; when the thread is properly engaged and the main body shell 8 does not rotate abnormally, the torque growth curve is relatively stable. Within a reasonable range; if abnormal force occurs due to misalignment, misalignment, or insufficient locking, then This will deviate from the preset range. Preferably, in one specific embodiment, it can be taken as follows: =0.20、 =0.25、 =0.55. Similarly, the above weighting coefficients can be calibrated and corrected online by the control module based on historical operating samples.

[0066] S6. The control module uses the circumferential locking confidence level X obtained in step S4 and the screwing initiation engagement confidence level Y obtained in step S5 as the comprehensive admission variables before formal screwing, and compares them with the preset threshold. , Based on the relationship, the corresponding optimal execution set Ω is output to determine whether the main body shell 8 should enter the formal screwing, relocking verification, low-speed import, or abnormal handling process:

[0067]

[0068] Wherein, Ω1 is the formal tightening set, which controls the fixture to tighten the locking nut according to the preset formal tightening speed and termination torque; Ω2 is the relock verification set, which controls the main body shell 8 to press down on the base 16 a second time to re-trigger the locking establishment, and then perform a low-speed trial tightening; Ω3 is the low-speed guide set, which, while maintaining the existing circumferential locking state, reduces the tightening speed and the single guide angle, and if necessary, performs a small-angle retraction and then guides again to reduce the risk of misalignment; Ω4 is the abnormal handling set, which stops the current formal tightening, records the abnormal state, and removes the part from the normal tightening process. Preferably, in this embodiment... 0.82 is acceptable. A value of 0.78 can be taken; the control module can also make rolling fine adjustments to the threshold based on the pass rate and abnormal rate in the recent period to adapt to the process fluctuations of different batches of main shell 8, different rib 802 states and different elastic element 18 attenuation states.

[0069] For step S4, it is determined whether the first positioning post 1401 and the second positioning post 1501, after opening, have formed a reliable circumferential lock on the main body shell 8 that can withstand subsequent screwing counter-torque. In this embodiment, if the base 16 does not move down sufficiently, it indicates that the main body shell 8 has not been fully pressed into the positioning hole. The value is too low; if the release angular displacement of the drive shaft 12 is insufficient, it indicates that the rotation of the driving bevel gear 21 driving the first bevel gear ring 14 and the second bevel gear ring 15 is not sufficiently established. If, during the low-speed trial turning stage, the main body shell 8 exhibits abnormal micro-rotation relative to the positioning fixture 7, it indicates that although the first positioning post 1401 and the second positioning post 1501 have approached or even contacted the protruding rib 802, their contact may still be a one-sided false contact, an off-center contact, or insufficient locking. The result is too high. By using the three dimensions mentioned above to obtain the circumferential locking reliability X, it is possible to distinguish between mechanical action that has occurred and reliable locking that has been established, thus making the admission judgment for formal turning based on a more realistic locking state.

[0070] Step S5 aims to further identify whether, in the current locked state, the locking nut and the external thread 801 of the main housing 8 have formed suitable engagement conditions for formal tightening. Even with a high circumferential locking reliability X, if the locking nut experiences misalignment, off-center threading, or localized obstruction during insertion, it may still cause abnormal torque increases and assembly defects during subsequent formal tightening. Therefore, this embodiment does not use a single torque value as the judgment criterion, but instead incorporates the downward displacement of the base 16, the release angular displacement of the drive shaft 12, and the torque growth rate during the trial tightening stage into the calculation of the tightening initiation engagement reliability Y. This ensures that Y reflects both the mechanical locking basis and the thread insertion quality. Consequently, the control module can identify the risk of misaligned threads before formal tightening, without having to passively stop the machine after formal tightening.

[0071] For step S6, the technical essence lies in the fact that the single-path control method of directly starting the formal tightening after the main body shell 8 is in place, as in Example 1, is no longer adopted. Instead, the circumferential locking reliability X and the tightening initiation engagement reliability Y are jointly incorporated into the decision logic to form an optimal execution set Ω that matches the current locking state. When both X and Y meet the threshold conditions, it indicates that the main body shell 8 has been reliably circumferentially locked and the locking nut is properly introduced. At this time, entering the formal tightening is the most efficient. When X is insufficient but Y is still acceptable, it indicates that the thread introduction foundation still exists, but the circumferential locking is not sufficient. It is advisable to prioritize relocking verification. When X is high but Y is insufficient, it indicates that the anti-rotation state is basically reliable, but the thread introduction is not ideal. It is advisable to adopt a flexible strategy that combines low-speed introduction and small-angle retraction. When both X and Y are insufficient, it can be directly determined that the current part is not suitable for entering the formal tightening, and abnormal handling can be triggered in time to avoid further expansion of follow-up rotation, misaligned threads, and incomplete tightening.

[0072] In summary, this embodiment further introduces online monitoring for locking quality, reliability assessment for trial tightening status, and optimized decision-making mechanisms for formal tightening access. This not only identifies abnormal states that appear locked but actually have false contact, partial contact, or insufficient locking, but also provides early warning and correction before formal tightening begins. This significantly reduces the probability of issues such as the main casing rotating incorrectly, misaligned threads, and incomplete tightening, and improves the assembly consistency and yield of the entire rotary photovoltaic connector assembly line.

[0073] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. A rotary photovoltaic connector assembly production line, comprising an indexing turntable (5) and, arranged sequentially along the circumference of the indexing turntable (5), a main body shell loading station (1), a sealing plug assembly station (2), a locking nut tightening station (3), and a finished product unloading station (4), characterized in that: The indexing turntable (5) has multiple sets of positioning fixtures (7) evenly arranged on the top along the circumferential direction. The positioning fixtures (7) have positioning holes, and a base (16) that can move along the axis of the positioning hole is provided in the positioning holes. The base (16) is provided with a first positioning post (1401) and a second positioning post (1501) for circumferentially limiting the main body shell (8) of the photovoltaic wiring male and female connectors. A drive assembly is provided below the base (16). The drive assembly is used to drive the first positioning post (1401) and the second positioning post (1501) to move away from each other at the same angular velocity and fit against the convex rib (802) side of the main body shell (8) to achieve circumferential locking of the main body shell (8). The base (16) is elastically engaged with the positioning fixture (7) along the axial direction of the positioning hole. During the process of the main body shell (8) being inserted into the positioning hole of the positioning fixture (7) and driving the base (16) to move downward, the drive component is released and drives the first positioning post (1401) and the second positioning post (1501) to move away from each other at the same angular velocity. The drive assembly includes a first bevel gear ring (14), a second bevel gear ring (15), and an active bevel gear (21) disposed between the first bevel gear ring (14) and the second bevel gear ring (15) and meshing with both of them. The first bevel gear ring (14) and the second bevel gear ring (15) are arranged along the axial direction of the positioning hole and can move synchronously with the base (16). The first positioning post (1401) is fixed to the first bevel gear ring (14), and the second positioning post (1501) is fixed to the second bevel gear ring (15). A drive shaft (12) is arranged along the diameter of the positioning hole. The drive shaft (12) can move synchronously with the base (16). A slider (13) is slidably arranged on the positioning fixture (7). The drive shaft (12) passes through the slider (13) and the drive shaft (12) is elastically engaged with the slider (13) along its own circumference. The active bevel gear (21) is coaxially arranged with the drive shaft (12) and fixedly installed at the end of the drive shaft (12).

2. The rotary photovoltaic wiring male and female connector assembly production line according to claim 1, characterized in that: The positioning fixture (7) has a positioning rod (11) hinged to one side, and a protrusion (1201) is fixed on the outer surface of the transmission shaft (12). A limiting block (702) is provided on the side of the positioning rod (11) away from the protrusion (1201), and the limiting block (702) is fixedly connected to the positioning fixture (7).

3. The rotary photovoltaic connector assembly production line according to claim 1, characterized in that: The drive shaft (12) is fixedly fitted with a driven bevel gear (22) at one end outside the positioning fixture (7). A bevel rack (9) is arranged in the path of the driven bevel gear (22) as it rotates with the indexing turntable (5), so that the driven bevel gear (22) can mesh with the bevel rack (9) during the rotation of the indexing turntable (5).

4. The rotary photovoltaic connector assembly production line according to claim 1, characterized in that: The bottom of the base (16) is fixed with a guide post (19), and the bottom end face of the guide post (19) is provided with a square groove (1901). The bottom of the positioning hole is fixed with a vertical rod, and the top of the vertical rod extends into the square groove (1901) and slides with it.

5. The rotary photovoltaic connector assembly production line according to claim 4, characterized in that: An elastic element (18) is sleeved on the outside of the guide post (19), and the elastic element (18) is located between the bottom of the positioning hole and the base (16).

6. The rotary photovoltaic wiring male and female connector assembly production line according to claim 3, characterized in that: The bevel rack (9) is located between the locking nut tightening station (3) and the finished product picking station (4).

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