A cable core mounting mechanism and a cable joint manufacturing apparatus

Abstract

The application relates to the technical field of photovoltaic module string joint manufacturing, in particular to a cable inner core mounting mechanism and a cable joint manufacturing device, wherein the cable inner core mounting mechanism comprises a box body provided with a wire inlet and a working cavity; a cable conveying assembly used for conveying a cable into the working cavity; a wire stripping assembly used for stripping the outer sheath of the cable conveyed into the working cavity; an inner core replacing assembly comprising a sleeving structure, a distance adjusting structure and a replacing structure; and a wire pressing assembly used for pressing the stripped cable and the inner core. When the application is used, the cable is conveyed to a wire stripping position by the cable conveying assembly, the cable is stripped by the wire stripping assembly, the inner core at the cable stripping position is mounted, and the cable is pressed by the pressing assembly. The whole process is completed by automatic equipment, and the problem of electric shock when the photovoltaic module string cable is stripped or pressed by manual work is avoided.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic string connector manufacturing technology, specifically to a cable core installation mechanism and a cable connector manufacturing device. Background Technology

[0002] A photovoltaic (PV) module string is a unit in a PV power generation system where multiple PV modules are connected in series to form the smallest unit with the required DC output voltage. These PV modules are connected in series using mating blocks. Before connecting two mating blocks, workers need to manually connect the cables and the blocks. The current MC4 connector manufacturing process involves workers first stripping the outer sheath of the PV module's cable, and then crimping the inner core of the mating block onto the stripped cable. Both the stripping of the cable sheath and the crimping of the MC4 connector pose a risk of electric shock. Furthermore, because each step is done manually, it is time-consuming, and the stripping length and crimping position of the inner core can only be roughly judged visually. This can easily result in the cable's internal components being exposed after crimping, which is extremely dangerous during use. Summary of the Invention

[0003] The purpose of this invention is to provide a cable core mounting mechanism and a cable connector manufacturing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: On the one hand, a cable core mounting mechanism is provided, including... The housing has an inlet and a working chamber, with the inlet connected to the working chamber; A cable delivery assembly is disposed at the cable inlet and is used to deliver a cable into the working chamber; A wire stripping assembly is disposed in the working chamber and is used to strip the outer sheath of the cable that is being fed into the working chamber. An inner core replacement assembly includes a sleeve structure, a distance adjustment structure, and a replacement structure. The sleeve structure is used to sleeve the inner core onto the stripped portion of the cable. The distance adjustment structure is used to adjust the distance between the sleeve structure and the stripping assembly according to the length of the inner core. The replacement structure is used to replenish the inner core to the sleeve structure after the sleeve structure has finished sleeved. A wire crimping assembly is disposed at the bottom of the working cavity and is used to crimp the stripped part of the cable to the inner core.

[0005] Preferably, the cable conveying assembly includes a conveying push rod, a moving ring, a distance sensor, a clamping push rod, and a cable extension structure. The two ends of the conveying push rod are respectively connected to the cable inlet and the moving ring. The distance sensor is disposed inside the moving ring and is used to detect whether there is a cable in the moving ring. The clamping push rod is disposed around the inside of the moving ring. The cable extension structure is disposed at one end of the clamping push rod. The clamping push rod is used to clamp and fix the cable inside the moving ring when the distance sensor detects that there is a cable inside the moving ring. The cable extension structure is used to adjust the relative position between the clamped cable and the moving ring according to the set stripping length.

[0006] Preferably, the cable extension structure includes a rotating block and a rotating motor. The rotating block is connected to the clamping push rod, and the outer side of the rotating block is coated with a polyurethane coating. The rotating motor is disposed on the clamping push rod and is used to drive the rotating block to rotate.

[0007] Preferably, the upper part of the working cavity is provided with a guide rail, and the wire stripping assembly includes a movable push rod, a movable block, a wire stripping push rod, and a wire stripping block. The movable push rod is disposed on the guide rail and is used to drive the movable block to move along the guide rail. There are two sets of wire stripping push rods and wire stripping blocks, and the two sets of wire stripping push rods and wire stripping blocks are symmetrically disposed on the movable block. The extension of the wire stripping push rod is used to drive the wire stripping block to clamp the cable.

[0008] Preferably, the wire stripping assembly further includes a clamping spring and a clamping block, with both ends of the clamping spring connected to the wire stripping block and the clamping block respectively, and the clamping block used to clamp the stripped outer sheath of the cable.

[0009] Preferably, the sleeve structure includes a second movable block, a lifting rod, a mounting block, a pushing rod, a return spring, and a fixing block. The second movable block is disposed on the guide rail. The mounting block is connected to the second movable block via the lifting rod, which controls the lifting and lowering of the mounting block. The mounting block has a placement groove and a pushing groove, which are interconnected. A replacement structure is disposed in the placement groove and is used to push the inner core into the pushing groove. The pushing rod is disposed in the pushing groove and is used to push the core in the pushing groove to the cable stripping point. The mounting block has a fixing groove. The fixing block and the return spring are both disposed on the lifting rod, and the return spring is used to keep the fixing block inserted into the fixing groove.

[0010] Preferably, the distance adjustment structure includes an adjustment push rod, with its two ends connected to the first moving block and the second moving block, respectively. The adjustment push rod is used to adjust the distance between the first moving block and the second moving block according to the inner core length.

[0011] Preferably, the replacement structure includes a replacement spring and a material plate, with both ends of the replacement spring connected to the material plate and the side wall of the push groove, respectively, and the material plate is used to push the inner core into the push groove.

[0012] Preferably, the wire pressing assembly includes a wire pressing push rod and a wire pressing block. The wire pressing push rod is disposed on the side wall of the working cavity, and the wire pressing push rod is used to drive the wire pressing block to press the stripped part and the inner core of the cable.

[0013] On the other hand, a cable connector manufacturing apparatus is provided that includes the aforementioned cable core mounting mechanism.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: In use, the present invention uses a cable conveying assembly to transport the cable to the stripping position, the stripping assembly to strip the cable, and then the inner core of the cable at the stripped position is installed and crimped by a crimping assembly. The entire process is completed by automated equipment, avoiding the problem of electric shock that can occur when manually stripping or crimping photovoltaic string cables. Furthermore, because the present invention simplifies the manual operation process, it significantly improves the installation efficiency when installing the inner core and cable of the existing MC4 connector for photovoltaic strings. Using the present invention to install the inner core of the MC4 connector for photovoltaic strings saves time and effort. This invention reduces labor costs and allows for the installation and commissioning of a large number of MC4 connectors for photovoltaic strings in a short time, thus shortening the construction time of photovoltaic power plants. The combination of the stripping and cable delivery components enables precise control of the cable stripping length, reducing the possibility of short circuits caused by exposed cable interiors after crimping, compared to manual operation. The invention also achieves rapid replacement of the inner core after crimping through a replacement structure, improving work efficiency. During manufacturing, simply inserting the cable end into the working chamber through the inlet automatically completes the inner core crimping. It is highly practical and worthy of widespread promotion. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention in a side view state; Figure 2 This is an isometric view of the cable delivery assembly of the present invention. Figure 3 This is a schematic diagram of the clamping push rod and rotating block structure of the present invention; Figure 4 This is a schematic diagram of the connection structure of movable block one, adjusting push rod and movable block two of the present invention; Figure 5 This is a schematic diagram of the connection structure of the guide rail, movable block one, and movable block two of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of a portion of area A in the middle; Figure 7 This is a cross-sectional view of the connection between the movable block 2 and the mounting block of the present invention; Figure 8 This is a schematic diagram of the connection structure between the housing and the pressure wire assembly of the present invention.

[0016] In the diagram: 1. Box body, 2. Inlet, 3. Working chamber, 4. Conveying push rod, 5. Moving ring, 6. Distance sensor, 7. Clamping push rod, 8. Rotating block, 9. Rotating motor, 10. Guide rail, 11. Moving push rod, 12. Moving block one, 13. Stripping push rod, 14. Stripping block, 15. Pressing spring, 16. Pressing block, 17. Moving block two, 18. Lifting rod, 19. Mounting block, 20. Push rod, 21. Reset spring, 22. Fixing block, 23. Placement slot, 24. Pushing slot, 25. Adjusting push rod, 26. Replacement spring, 27. Material plate, 28. Pressing push rod, 29. Pressing block. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-8 The present invention provides a technical solution: A cable core mounting mechanism, as shown in the instruction manual. Figure 1 As shown, it includes: Box 1 is used to install other components of this application. Box 1 has a cable inlet 2 and a working cavity 3. The cable inlet 2 is used to allow the cable to enter the working cavity 3 and is connected to the working cavity 3. The working cavity 3 is used for installing the inner core of the cable. A control panel is provided on the outside of box 1. The control panel is used to set the diameter of the cable (to control the movement of the clamping push rod 7) and the length of the inner core (to determine the stripping distance). A hatch (not shown in the attached drawings) is provided on the side wall of box 1. The hatch is used to replace the mounting block 19 (and the inner core inside the mounting block 19). A cable conveying assembly is provided at the cable inlet 2 and is used to convey cables into the working chamber 3. The cable conveying assembly includes a conveying push rod 4, a moving ring 5, a distance sensor 6, a clamping push rod 7, and a cable extension structure. The conveying push rod 4 is a DC hydraulic push rod. In this embodiment, the conveying push rod 4, clamping push rod 7, moving push rod 11, lifting rod 18, adjusting push rod 25, and pressing push rod 28 are all DC hydraulic push rods. The two ends of the conveying push rod 4 are connected to the cable inlet 2 and the moving ring 5, respectively. The conveying push rod 4 is used to move the cable to the stripping block 14 position for stripping after the clamping push rod 7 drives the rotating block 8 to clamp the cable. The distance sensor 6 is set inside the moving ring 5 and is used to detect whether there is a cable in the moving ring 5. The distance sensor 6 is an infrared sensor. The clamping push rod 7 is arranged around the inside of the moving ring 5. The cable extension structure is set at one end of the clamping push rod 7. The clamping push rod 7 is used to clamp and fix the cable inside the moving ring 5 when the distance sensor 6 detects that there is a cable inside the moving ring 5. The cable extension structure is used to adjust the relative position between the clamped cable and the moving ring 5 according to the set stripping length.

[0019] The cable extension structure includes a rotating block 8 and a rotating motor 9. One end of the rotating block 8 is rotatably connected to the clamping push rod 7. The end of the rotating block 8 that contacts the cable is coated with a polyurethane coating to increase the coefficient of friction between the rotating block 8 and the cable, ensuring that there is no slippage between the cable and the rotating block 8. Thus, the extension length of the cable can be corresponding to the number of rotations of the rotating block 8. The rotating motor 9 is a servo motor and is located inside the clamping push rod 7. The output end of the rotating motor 9 is fixedly connected to the rotating block 8. The rotating motor 9 is used to drive the rotating block 8 to rotate. The cable extension structure is arranged around the moving ring 5, and the rotating blocks 8 and rotating motors 9 of each cable extension structure move synchronously during use. In this embodiment, each clamping push rod 7 is provided with two sets of cable extension structures.

[0020] A wire stripping assembly is provided in the working chamber 3 and is used to strip the outer sheath of the cable that is fed into the working chamber 3. The upper part of the working cavity 3 is provided with a guide rail 10. The guide rail 10 is used to install the first moving block 12 and the second moving block 17 and restrict the movement direction of the first moving block 12 and the second moving block 17 so that they can only move along the direction of the guide rail 10. The wire stripping assembly includes a moving push rod 11, the first moving block 12, the wire stripping push rod 13 and the wire stripping block 14. The clamping end of the wire stripping block 14 is provided with stripping teeth for stripping the outer sheath of the cable. The moving push rod 11 is set on the guide rail 10 and is used to drive the first moving block 12 to move along the guide rail 10. There are two sets of wire stripping push rods 13 and wire stripping blocks 14. The two sets of wire stripping push rods 13 and wire stripping blocks 14 are symmetrically arranged on the first moving block 12. The first moving block 12 is provided with a sliding groove. The sliding groove is used to install the wire stripping block 14 and restrict the movement direction of the wire stripping block 14. The extension of the wire stripping push rod 13 is used to drive the wire stripping block 14 to clamp the cable.

[0021] The wire stripping assembly also includes a clamping spring 15 and a clamping block 16. The two ends of the clamping spring 15 are connected to the wire stripping block 14 and the clamping block 16, respectively. The clamping spring 15 is a compression spring. When the wire stripping block 14 clamps the cable sheath, the clamping block 16 will press against the sheath of the stripped part of the cable. At this time, the compression spring will be compressed, so that the clamping block 16 clamps the stripped sheath of the cable, thereby ensuring that the cable and the sheath can be completely separated. The clamping block 16 is used to clamp the stripped sheath of the cable to ensure the wire stripping block 14.

[0022] The inner core replacement assembly includes a sleeve structure, a distance adjustment structure, and a replacement structure. The sleeve structure is used to sleeve the inner core onto the stripped outer sheath of the cable. The distance adjustment structure is used to adjust the distance between the sleeve structure and the stripping assembly according to the length of the inner core. The replacement structure is used to replenish the inner core for the sleeve structure after the sleeve structure has finished sleeved the inner core. The mounting structure includes a second movable block 17, a lifting rod 18, a mounting block 19, a pushing rod 20, a return spring 21, and a fixed block 22. The second movable block 17 is mounted on the guide rail 10 and is used to mount other components of the mounting mechanism. The mounting block 19 is connected to the second movable block 17 via the lifting rod 18, which controls the lifting and lowering of the mounting block 19. The mounting block 19 has a placement groove 23 and a pushing groove 24. The placement groove 23 is used to place unused inner cores, and the pushing groove 24 is used to mount the pushing rod 20. The placement groove 23 and the pushing groove 24 are interconnected. A replacement structure is located in the placement groove 23 and is used to push the inner core into the pushing groove 24. The push rod 20 is set in the push groove 24. The push rod 20 is used to push the cable stripping part in the push groove 24. The mounting block 19 has a fixing groove. The moving block 27 has a sliding groove corresponding to the moving distance of the mounting block 19. The fixing block 22 extends to the outside of the moving block 27 through the sliding groove. When replacing the mounting block 19, only the fixing block 22 needs to be pulled to contact the fixing block 22's restriction on the mounting block 19. The fixing block 22 and the return spring 21 are both set in the lifting rod 18. The end of the fixing block 22 and the lifting rod 18 is the movable end of the lifting rod 18. The return spring 21 is a compression spring. The return spring 21 is used to keep the fixing block 22 inserted into the fixing groove.

[0023] The distance adjustment structure includes an adjustment push rod 25. The two ends of the distance adjustment structure are connected to the first movable block 12 and the second movable block 17, respectively. When in use, the adjustment push rod 25 is used to adjust the distance between the first movable block 12 and the second movable block 17 according to the length of the inner core, so as to ensure that the inner core pushed out in the mounting block 19 can be connected with the stripped part of the cable.

[0024] The replacement structure includes a replacement spring 26 and a material plate 27. The two ends of the replacement spring 26 are connected to the side wall of the material plate 27 and the pushing groove 24, respectively. The replacement spring 26 is located at the bottom of the placement groove 23. The replacement spring 26 is a compression spring. The material plate 27 is used to push the inner core into the pushing groove 24.

[0025] A wire crimping assembly is located at the bottom of the working chamber 3. This assembly is used to crimp the stripped cable sheath and the inner core of the cable. The assembly includes a wire crimping push rod 28 and a wire crimping block 29. The push rod 28 is located on the side wall of the working chamber 3 and drives the wire crimping block 29 to crimp the stripped cable sheath and the inner core. The crimping end of the wire crimping block 29 has a crimping groove. During use, the cable with the inner core inserted will be engaged in the crimping groove. Then, by pushing the push rod 28 to close the symmetrically arranged crimping grooves, the crimping of the inner core is completed.

[0026] Working principle: First, the inner core is pressed into the mounting block 19. As the inner core is pressed in, the replacement spring 26 is compressed by the pressing plate 27. Then, the power is turned on, and the diameter of the cable and the length of the inner core are set. Then, the cable is put into the inlet 2. When the distance sensor 6 detects that there is a cable inside the moving ring 5, the clamping push rod 7 is activated to fix the cable through the rotating blocks 8. After fixing, the conveying push rod 4 will drive the cable and the moving ring 5 to move towards the stripping block 14 (at this time, the wire stripper is in an unclamped state). When it moves to the stripping block 14, The rotating block 8 will extend the cable according to the set stripping length. Then, the stripping push rod 13 will drive the stripping block 14 to cut the cable sheath. When the stripping block 14 contacts the cable, the clamping block 16 will press against the stripped portion of the cable sheath. At this time, the compression spring will be compressed, thus clamping the clamping block 16 with the stripped cable sheath, ensuring that the cable and sheath can be completely separated. Then, the moving push rod 11 will drive the moving block 12 to move. While moving, the stripping block 14 will clamp the stripped cable sheath, thus separating the cable from the sheath. As the cable sheath is stripped, the adjusting push rod 25 does not extend or retract during the movement of moving block 12. Simultaneously, as moving block 12 moves, moving block 27 reaches the stripping position. The lifting rod 18 lowers the mounting block 19, and then the pushing rod 20 pushes the inner core inside the pushing groove 24 to the stripped cable point, thus joining the two. The lifting rod 18 then raises the mounting block 19. Finally, the pressing push rod 28 drives the pressing block 29 to press the stripped cable point and the inner core together. When the pushing rod 20 completes pressing the inner core inside the pushing groove 24... After the inner core is pushed and retracted, since there is no restriction of the push rod 20 inside the push groove 24, the replacement spring 26 will drive the material plate 27 to push the inner core inside the replacement groove into the push groove 24, thus preparing for the next crimping; after a single operation is completed (i.e. after the crimping block 29 completes the crimping), the crimping push rod 28 will drive the crimping block 29 to separate and return to the initial position. Then the conveying push rod 4 will drive the moving ring 5 to move towards the feed port. At the same time, the moving push rod 11 will drive the moving block 12 and the moving block 27 to reset.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable core mounting mechanism, characterized in that, include: The housing has an inlet and a working chamber, with the inlet connected to the working chamber; A cable delivery assembly is disposed at the cable inlet and is used to deliver a cable into the working chamber; A wire stripping assembly is disposed in the working chamber and is used to strip the outer sheath of the cable that is being fed into the working chamber. The inner core replacement assembly includes a sleeve structure, a distance adjustment structure, and a replacement structure. The sleeve structure is used to sleeve the inner core onto the stripped outer sheath of the cable. The distance adjustment structure is used to adjust the distance between the sleeve structure and the stripping assembly according to the length of the inner core. The replacement structure is used to replenish the inner core to the sleeve structure after the sleeve structure has finished sleeved the inner core. as well as A wire crimping assembly is disposed at the bottom of the working cavity and is used to crimp the stripped part of the cable to the inner core. The cable conveying assembly includes a conveying push rod, a moving ring, a distance sensor, a clamping push rod, and a cable extension structure. The two ends of the conveying push rod are respectively connected to the cable inlet and the moving ring. The distance sensor is disposed inside the moving ring and is used to detect whether there is a cable in the moving ring. The clamping push rod is disposed around the inside of the moving ring. The cable extension structure is disposed at one end of the clamping push rod. The clamping push rod is used to clamp and fix the cable inside the moving ring when the distance sensor detects that there is a cable inside the moving ring. The cable extension structure is used to adjust the relative position between the clamped cable and the moving ring according to the set stripping length. The upper part of the working chamber is provided with a guide rail. The wire stripping assembly includes a movable push rod, a movable block 1, a wire stripping push rod, and a wire stripping block. The movable push rod is disposed on the guide rail and is used to drive the movable block 1 to move along the guide rail. There are two sets of wire stripping push rods and wire stripping blocks, and the two sets of wire stripping push rods and wire stripping blocks are symmetrically disposed on the movable block 1. The extension of the wire stripping push rod is used to drive the wire stripping block to clamp the cable. The sleeve structure includes a second movable block, a lifting rod, a mounting block, a pushing rod, a return spring, and a fixing block. The second movable block is disposed on the guide rail. The mounting block is connected to the second movable block via the lifting rod, which controls the lifting and lowering of the mounting block. The mounting block has a placement groove and a pushing groove, which are interconnected. A replacement structure is disposed in the placement groove and is used to push the inner core into the pushing groove. The pushing rod is disposed in the pushing groove and is used to push the inner core into the cable stripping area. The mounting block has a fixing groove. The fixing block and the return spring are both disposed on the lifting rod, and the return spring is used to keep the fixing block inserted into the fixing groove. The distance adjustment structure includes an adjustment push rod, with its two ends connected to the first moving block and the second moving block, respectively. The adjustment push rod is used to adjust the distance between the first moving block and the second moving block according to the length of the inner core. The wire pressing assembly includes a wire pressing push rod and a wire pressing block. The wire pressing push rod is disposed on the side wall of the working cavity and is used to drive the wire pressing block to press the stripped part and the inner core of the cable.

2. The cable core mounting mechanism according to claim 1, characterized in that: The cable extension structure includes a rotating block and a rotating motor. The rotating block is connected to the clamping push rod, and the outer side of the rotating block is coated with a polyurethane coating. The rotating motor is disposed on the clamping push rod and is used to drive the rotating block to rotate.

3. The cable core mounting mechanism according to claim 1, characterized in that: The wire stripping assembly also includes a clamping spring and a clamping block. The two ends of the clamping spring are respectively connected to the wire stripping block and the clamping block. The clamping block is used to hold the stripped outer sheath of the cable.

4. The cable core mounting mechanism according to claim 1, characterized in that: The replacement structure includes a replacement spring and a material plate. The two ends of the replacement spring are respectively connected to the material plate and the side wall of the push groove. The material plate is used to push the inner core into the push groove.

5. A cable connector manufacturing apparatus, characterized in that, include: The cable core mounting mechanism according to any one of claims 1-4.

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