Cable joint preassembling equipment

Abstract

A cable joint preassembling device belongs to the technical field of equipment used for assembling line connectors, and comprises a first discharging system which comprises a strip-shaped groove used for arranging bodies, two guide rails which are horizontally arranged and parallel to each other are arranged at the front end of the first discharging system in a forward extending mode, the first discharging system is used for conveying the bodies, and a material pushing plate used for pushing the bodies is arranged in the strip-shaped groove; the second discharging system comprises a conveying groove, a through hole is formed in the bottom of the front end of the conveying groove, a blocking face is arranged on the bottom face of the middle section of the conveying groove, and a discharging groove is formed in the outer side of the conveying groove along the extending track of the blocking face; the positioning mechanism comprises a first sensor, a second sensor and a pair of baffles, the first sensor is arranged on the side wall of one guide rail in a penetrating mode, the baffles are arranged above the two guide rails respectively, semicircular grooves are formed in the bottom faces of the baffles, and V-shaped grooves are formed in the tops of the semicircular grooves; the driving mechanism comprises a disc coaxially arranged below the through hole. According to the scheme, conveying and positioning of the nut and the body can be automatically completed, and the purpose of automatically assembling the cable connector is achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of equipment for assembling line connectors, and particularly relates to a cable connector pre-assembly device. Background Technology

[0002] Common cable connectors such as Figure 1 As shown, the connector mainly includes the connector body and a locking nut. The middle section of the body is an external nut structure, and both ends are set as external threaded tubes, or one end is an external threaded tube and the other end is a round tube. The end of the external threaded tube at one end has claws arranged in a circumferential array. The outer end of the locking nut is usually a hemispherical structure to facilitate a smooth transition with the cable's outer wall. When connecting the cable, the body and locking nut are used as a set. The end of the body with claws passes through the inside of the nut, and the nut connects to the external threaded tube with claws through a threaded structure. For ease of installation and use, the body and nut need to be pre-assembled before the cable connector is packaged, so that the threads of the nut and the external threaded tube partially connect. Because the two ends of the body and the nut are different, there is only one connection state during assembly. If automated assembly is used, the body and nut need to be adjusted first, then aligned, and finally assembled. Although there are material feeding devices in the existing technology that can adjust and arrange the body and nut, the overall structure of the adjustment is relatively complex. Most of them require the use of flipping mechanisms or clamps, which makes the composition of the whole set of equipment relatively complex. Therefore, this kind of pre-assembly work is usually done manually. However, manual assembly is inefficient and cannot meet the production needs. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a cable connector pre-assembly device that can automatically transport and position the nut and body, and achieve the purpose of automatically assembling cable connectors.

[0004] In order to achieve the objective of this invention, the following solution is proposed: A cable connector pre-assembly device is disclosed. The cable connector includes a body and a nut. The outer threaded end of the front end of the body is provided with a claw, and the middle section has a coaxially arranged hexagonal prism. The outer end of the nut has a hemispherical structure, and the inner end has a planar structure. The pre-assembly device includes: a first feeding system, a second feeding system, a positioning mechanism, and a driving mechanism. The first feeding system includes a strip trough for arranging the body, with two horizontally arranged and parallel guide rails extending forward at its front end for conveying the body, and a pusher plate for pushing the body is provided inside the strip trough. The second discharge system includes a conveying trough, with a push plate at its rear end that moves along the conveying direction. A through hole is opened at the bottom of the front end of the conveying trough. The middle section of the conveying trough has a blocking surface protruding from the bottom surface. The protrusion height is less than half the size of the hemispherical structure protruding from the end face of the nut. One end of the blocking surface is inclined towards the outside of the front end of the conveying trough. A discharge trough is provided on the outside of the conveying trough along the extension trajectory of the blocking surface. The positioning mechanism includes a first sensor, a second sensor, and a pair of baffles. The first sensor passes through the side wall of one of the guide rails. The baffles are respectively located above the two guide rails. The bottom surface of the baffles has a semi-circular groove. The two semi-circular grooves have the same radius and are coaxial with the through hole. The top of the semi-circular grooves has a V-shaped groove. When the first sensor detects the body, the body is coaxial with the semi-circular groove. The drive mechanism includes a disc coaxially disposed below the through hole, the top surface of which matches the hemispherical structure of the nut. The disc is configured to move vertically and rotate around its own axis.

[0005] The beneficial effects of this invention are as follows: This solution utilizes a first feeding system and a second feeding system to automatically arrange and transport the body and nut respectively, providing the necessary conditions for automatic assembly. Furthermore, the feeding system has a simple structure and a stable and reliable arrangement effect. The feeding system can transport the body and nut with qualified posture to the positioning mechanism for positioning, and then use the drive structure to assemble the nut and body, realizing automatic assembly and helping to improve assembly efficiency. Attached Figure Description

[0006] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of the invention.

[0007] Figure 1 A schematic diagram of the cable connector structure pre-installed using this application is shown.

[0008] Figure 2 A schematic diagram of the overall structure of the pre-installed equipment in this application is shown.

[0009] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0010] Figure 4 A schematic diagram of the structure of the first material feeding system of this application is shown.

[0011] Figure 5 A schematic diagram of the positioning mechanism of this application is shown.

[0012] Figure 6 A partial cross-sectional view of the positioning mechanism of this application during the positioning of the body is shown.

[0013] Figure 7A schematic diagram of the structure of the second material feeding system of this application is shown.

[0014] Figure 8 It shows Figure 7 A magnified view of a section at point B.

[0015] Figure 9 A schematic diagram of a preferred structure of the second material feeding system of this application is shown.

[0016] Figure 10 It shows Figure 9 A magnified view of a section at point C.

[0017] Figure 11 A cross-sectional view of this application along the width of the conveying trough is shown.

[0018] Figure 12 It shows Figure 11 A magnified view of a section at point D.

[0019] Figure 13 A partial sectional view of the positioning mechanism is shown when the upper end of the hexagonal prism in the middle section of the body is inserted into the V-groove.

[0020] Figure 14 A partial cross-sectional view of the positioning mechanism is shown when the body and nut are pre-assembled.

[0021] The markings in the diagram are: strip groove-11, guide rail-12, pusher plate-13, hopper-14, conveying groove-21, through hole-211, blocking surface-212, stepped surface-213, push plate-22, discharge groove-23, stop bar-24, guide rod-25, storage groove-26, cross bar-27, first sensor-31, second sensor-32, baffle-33, semi-circular groove-331, V-groove-332, third sensor-34, telescopic pin-35, telescopic spring-351, disc-41, positioning rod-411, lifting device-42, motor-43, support rod-431, cylindrical spring-44, body-91, nut-92. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention will be described in detail below with reference to the accompanying drawings. However, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments.

[0023] like Figure 1 As shown, the cable connector includes a body 91 and a nut 92. The outer screw end of the front end of the body 91 is provided with a claw, and the middle section has a coaxially arranged hexagonal prism, which is the outer nut of the middle section of the body 91. The outer end of the nut 92 is a hemispherical structure, and the inner end is a planar structure. During assembly, the front end of the body 91 and the claw are inserted into the inner end of the nut 92, and the nut 92 and the body 91 are connected by threads.

[0024] like Figure 2 As shown, a cable connector pre-assembly device is used to assemble the aforementioned cable connectors. The device includes: a first feeding system, a second feeding system, a positioning mechanism, and a driving mechanism.

[0025] Specifically, such as Figures 2 to 4 As shown, the first feeding system includes a strip groove 11 for arranging the bodies 91. Two horizontally arranged and parallel guide rails 12 extend forward from the front end of the strip groove 11 for conveying the bodies 91. Specifically, the distance between the guide rails 12 is greater than the diameter of the outer threaded tube of the body 91 and less than the distance between the opposite outer surfaces of the hexagonal prism in the middle section of the body 91. The width of the strip groove 11 matches the cross-sectional outline of the body 91. Because the front end of the body 91 has a chuck, its front weight is greater than its rear weight. When the body 91 is placed in the strip groove 11, it is usually in a flat position. The middle section of the body 91 is usually designed as a hexagonal prism structure for easy tightening. Therefore, in one embodiment, the width of the strip groove 11 matches the distance between the opposite edges of the hexagonal prism. This structure ensures that only one row of bodies can be arranged in the strip groove 11. 91. As a further preferred embodiment, in another more preferred embodiment, the width of the strip groove 11 matches the distance between the opposite outer walls of the hexagonal prism. The strip groove 11 is provided with a pusher plate 13 that moves along its length direction to push the body 91 in the strip groove 11 to move between the two guide rails 12. Specifically, the rear end of the strip groove 11 is provided with a telescopic device to drive the pusher plate 13 to move. The telescopic device is a cylinder or a linear motor. When the body 91 moves between the two guide rails 12, because the front end of the body 91 is heavier, its front end will automatically swing downward, so that the body 91 is in a vertical state and the claws face downward.

[0026] Specifically, such as Figure 2 , Figure 7 and Figure 9As shown, the second discharge system includes a conveying trough 21, with a pusher 22 at its rear end that moves along the conveying direction. A through hole 211 is provided at the bottom of the front end of the conveying trough 21. Preferably, the front end of the conveying trough 21 is a closed structure to prevent the nut 92 from being discharged from the front end of the conveying trough 21. Specifically, the inner diameter of the through hole 211 is smaller than the hemispherical diameter of the outer end of the nut 92, but larger than the inner diameter of the nut 92. The width of the front section of the conveying trough 21 matches the distance between the nut 92 and its outer wall to prevent the nut 92 from moving along the width direction of the conveying trough 21. This allows the nut 92 to move along a fixed trajectory within the conveying trough 21, ensuring that the hemispherical structure outside the nut 92 accurately falls onto the through hole 211, thus achieving the purpose of positioning the nut 92. The middle section of the conveying trough 21 has a blocking surface 212 protruding from the bottom surface, the protrusion height of which is less than half the size of the hemispherical structure protruding from the end face of the nut 92. As a further preferred embodiment, the smaller the height of the blocking surface 212 protruding from the bottom surface of the conveying trough 21, the better. A smaller protrusion height makes it easier for the hemispherical nut 92, with its downward-facing structure, to move past the blocking surface 212 towards the front end of the conveying trough 21. For example, if the hemispherical structure protrudes 10mm from the end face of the nut 92, then the height of the blocking surface 212 protruding from the bottom surface of the conveying trough 21 should be less than 5mm, preferably 1mm, 2mm, or 3mm. It can also be less than one-third, one-quarter, or one-fifth of the size of the hemispherical structure protruding from the end face of the nut 92. One end of the blocking surface 212 is inclined towards the outer side of the front end of the conveying trough 21, and the outer side of the conveying trough 21 is provided with a through-passage along the extension trajectory of the blocking surface 212. The discharge chute 23 is used to discharge nuts 92 with their hemispherical structure facing upwards. Specifically, when the hemispherical structure is facing upwards, the flat surface of the inner end of the nut 92 will be in contact with the bottom surface of the conveying chute 21, and therefore cannot cross the blocking surface 212. Under the squeezing and pushing of the nut 92 behind, the nut 92 in this state will enter the discharge chute 23 along the blocking surface 212. As for the nut 92 with its hemispherical structure facing downwards, because the height of the blocking surface 212 is lower than the size of the hemispherical structure protruding from the end face of the nut 92, the nut 92 in this posture can cross the blocking surface 212 and move smoothly to the front end of the conveying chute 21. This method is used to screen the posture of the nut 92, so that the nut 92 with its inner end facing upwards can be smoothly conveyed to the front end of the conveying chute 21.

[0027] Specifically, such as Figure 3 , Figures 5 to 7 and Figures 11 to 14As shown, the positioning mechanism includes a first sensor 31, a second sensor 32, and a pair of baffles 33. The first sensor 31 is inserted through the side wall of one of the guide rails 12 to detect the positioning signal of the body 91. When the positioning signal of the body 91 is detected, the device stops pushing the body 91 forward. The baffles 33 are respectively located above the same cross section of the two guide rails 12. The distance between the two baffles 33 is greater than or equal to the distance between the two guide rails 12, and the distance between the bottom surface of the baffle 33 and the top surface of the guide rail 12 is greater than... The height of the hexagonal prism in the middle section of the main body 91 is such that a semi-circular groove 331 is formed on the bottom surface of the opposite side of the baffle 33. The inner diameter of the semi-circular groove 331 is greater than the distance between the opposite edges of the hexagonal prism in the middle section of the main body 91. The semi-circular grooves 331 at the bottom of the two baffles 33 have the same radius and are coaxial with the through hole 211. A V-shaped groove 332 is formed on the top of the semi-circular groove 331. The outline of the V-shaped groove 332 matches the outer outline of the hexagonal prism in the middle section of the main body 91. When the first sensor 31 detects the main body 91, the main body 91 is coaxial with the semi-circular groove 331.

[0028] Specifically, such as Figure 2 , Figure 3 , Figures 11 to 14 As shown, the drive mechanism includes a disk 41 coaxially disposed below the through hole 211. Its top surface matches the hemispherical structure of the nut 92, so the top surface of the disk 41 is a semi-circular hole structure. The outer diameter of the disk 41 is smaller than the inner diameter of the through hole 211. The disk 41 is moved in the vertical direction and rotates around its own axis.

[0029] When the equipment is working, the first discharge system arranges the body 91 with its front end facing downwards. The body 91 moves forward along the guide rail 12. When the first sensor 31 detects the arrival signal of the body 91, the first discharge system stops conveying the body 91. The second discharge system conveys the nut 92 with its hemispherical structure facing downwards and its inner end facing upwards, conveying the nut 92 to the front end of the conveying trough 21. When the second sensor 32 detects the nut 92, the second discharge system stops conveying the nut 92. The disc 4 is then placed... 1. The disc rises, using it to lift the nut 92 on the through hole 211 upwards. Because the body 91 below the baffle 33 is coaxial with the through hole 211, the lifted nut 92 will automatically fit onto the outer side of the lower end of the body 91. The disc 41 lifts the fitted body 91 and nut 92 together, causing the hexagonal prism in the middle section of the body 91 to insert into the semi-circular groove 331. At the same time, the disc 41 applies an upward preload to the body 91, pressing the top surface of the hexagonal prism in the middle section of the body 91 tightly against the bottom surface of the semi-circular groove 331. At this time, the top surface of the disc 41 is higher than the bottom surface of the semi-circular groove 331. The conveying groove 21 is used to separate the nut 92 from the conveying groove 21; then the disc 41 is rotated in the direction of tightening the nut 92. When the disc 41 rotates, it will drive the nut 92 and the body 91 to rotate together. Whenever the body 91 rotates to a predetermined position, the two opposite edges of the hexagonal prism in its middle section will match the position of the V-groove 332. Because the body 91 has an upward preload, the upper end of the hexagonal prism will be inserted into the V-groove 332 to limit the rotation of the body 91. If the disc 41 continues to rotate, it can only drive the nut 92 to continue to rotate, thereby tightening the nut 92. The threaded connection between the nut 92 and the body 91 is completed, thus completing the pre-assembly between the nut 92 and the body 91. Then, the disc 41 is lowered so that the hexagonal prism bottom surface of the middle section of the body 91 is supported on the guide rail 12 again. The pre-assembled body 91 and nut 92 are transported together to the front end of the guide rail 12 by the first discharge system until the body 91 at the rear is detected again by the first sensor 31. The conveying groove 21 also continues to transport the nut 92 to the front end until the second sensor 32 detects the nut 92 again, preparing for the next pre-assembly.

[0030] This solution can not only realize automatic assembly, but also automatically discharge, convey and position the nut 92 and the body 91. Furthermore, the first discharge system and the second discharge system have a simple overall structure and high reliability.

[0031] Preferred, such as Figure 2 , Figure 4As shown, a hopper 14 is connected above the strip groove 11 to temporarily store the body 91. The height between the bottom surface of the hopper 14 facing the guide rail 12 and the bottom surface of the strip groove 11 is less than the length of the body 91. Even if part of the body 91 is standing vertically in the strip groove 11, it will be blocked by the bottom surface of the hopper 14 and pushed over, so that the body 91 moves to the guide rail 12 in a flat position. This solution can not only reduce the frequency of manual feeding, but also further adjust the posture of the body 91 so that the body 91 moves to the guide rail 12 in a flat position.

[0032] Preferred, such as Figure 3 , Figure 5 , Figure 6 and Figures 12 to 14 As shown, the positioning mechanism also includes a third sensor 34, which passes downward through the baffle 33 to detect the position signal of the top surface of the hexagonal prism in the middle section of the body 91. Specifically, the detection area of ​​the third sensor 34 is located within the top surface range of the V-groove 332. When the third sensor 34 detects the positioning signal of the top surface of the hexagonal prism and the positioning signal disappears again, the disc 41 stops rotating and moves downward, thereby indicating that the front end of the body 91 has been inserted into the set depth requirement of the nut 92, and the disappearance of the signal again serves as a descent signal of the disc 41, further improving the automation level of the equipment and reducing the probability of errors. In this design, the reason why the signal disappears after the third sensor 34 detects the positioning signal of the top surface of the hexagonal prism is that during the pre-assembly process, the body 91 is subjected to an upward preload applied by the disc 41, and the nut 92 is also subjected to an upward preload. As the threads of the nut 92 and the body 91 gradually connect, the nut 92 will gradually rise. When the inner end of the nut 92 abuts against the bottom surface of the guide rail 12, continuing to rotate the nut 92 will cause the body 91 to move down to adapt to the threaded connection structure between it and the nut 92. If the rotation of the nut 92 is not stopped in time, the hexagonal prism of the nut 92 and the body 91 will be pressed tightly against the upper and lower surfaces of the guide rail 12, causing the pre-assembled body 91 and the nut 92 to be stuck on the guide rail 12 and unable to output smoothly. By setting the third sensor 34, when the detection signal of the top surface of the hexagonal prism is lost when the body 91 descends to a predetermined height, the threaded connection depth between the nut 92 and the body 91 can be determined to prevent the connection from being too deep and causing jamming.

[0033] Preferred, such as Figure 3 , Figure 5 and Figure 6As shown, along the length of the guide rail 12, telescopic pins 35 are provided on both sides of the first sensor 31. The front end of the telescopic pin 35 is a spherical structure, and the rear end is provided with a telescopic spring 351. When the telescopic spring 351 is in its natural state, the spherical surface of the front end of the telescopic pin 35 protrudes from the inner wall of the guide rail 12. Telescopic pins 35 and telescopic springs 351 are provided at the same length positions on both guide rails 12. When the first sensor 31 detects the positioning signal of the body 91, the external thread at the front end of the body 91 contacts the front end of the telescopic pin 35, thereby using the four telescopic pins 35 to limit the body 91, preventing the body 91 from continuing to move towards the front end of the guide rail 12 under inertia, and limiting the position of the body 91 to prevent the body 91 from being displaced during the engagement with the nut 92.

[0034] Preferred, such as Figures 7 to 10 As shown, a baffle 24 is provided above the connection point between the side wall of the conveying trough 21 and the discharge trough 23. A vertical guide rod 25 is provided on the side wall of the conveying trough 21. The two ends of the baffle 24 are slidably connected to the two guide rods 25. When the baffle 24 is in its lowest position, the distance between its bottom surface and the bottom surface of the discharge trough 23 is less than the height of the nut 92, and the height difference is less than the height of the hemispherical structure protruding from the end face of the nut 92. In a specific structure, when the height of the hemispherical structure protruding from the end face of the nut 92 is 8mm, the height difference can be set to 1mm to 5mm. The smaller the height difference, the more advantageous it is for the nut 92 with its hemispherical structure facing upwards to enter the discharge trough 23. After setting the above structure, when the nut 92 with its hemispherical structure facing upwards passes the baffle 24, because the inner end of the nut 92 faces downwards, it is restricted and guided by the blocking surface 212. The nut 92 in this posture will move towards the discharge trough 23. Because the hemispherical structure of the nut 92 faces upwards, the hemispherical structure can push... The moving baffle 24 moves upward along the guide rod 25 to avoid the hemispherical nut 92 facing upward, allowing it to smoothly enter the discharge chute 23. After the nut 92 passes, the baffle 24 will automatically fall down under the action of gravity. When the hemispherical nut 92 faces downward, it loses the push of the hemispherical structure because the inner end of the nut 92 is facing upward. The inner end of the nut 92 is a flat structure and cannot be stuck into the bottom surface of the baffle 24. Therefore, it cannot push the baffle 24 to rise. The nut 92 in this position can only be conveyed forward along the conveying chute 21.

[0035] Preferred, such as Figure 7 , Figure 10As shown, a storage trough 26 is provided on one side of the rear end of the conveying trough 21. The end of the storage trough 26 facing the conveying trough 21 is inclined downward. A horizontal bar 27 is provided above the connection between the storage trough 26 and the conveying trough 21. The distance between the horizontal bar 27 and the bottom surface of the conveying trough 21 is greater than the height of the nut 92 and less than the distance between the opposite sides of the hexagonal prism of the nut 92. This is to prevent the nut 92 from entering the conveying trough 21 with the outer side of the hexagonal prism in contact with the conveying trough 21. The horizontal bar 27 can ensure that the nut 92 entering the conveying trough 21 can only have two postures: hemispherical structure facing downward or facing upward.

[0036] Preferred, such as Figure 7 , Figure 10 As shown, the width of the front section of the conveying trough 21 matches the distance between the opposite sides of the hexagonal prism on the outside of the nut 92. The width of the rear section of the conveying trough 21 is greater than or equal to the distance between the opposite edges of the hexagonal prism on the outside of the nut 92, making it easier for the nut 92 temporarily stored in the storage trough 26 to enter the conveying trough 21. The inner walls of the two side plates of the conveying trough 21 have stepped surfaces 213 at the junction of the front and rear sections of the conveying trough 21. The stepped surfaces 213 on both sides are staggered along the length of the conveying trough 21, and the staggered distance is greater than the width of the side of the hexagonal prism on the outside of the nut 92. By setting the stepped surfaces 213 and limiting their position, the stepped surfaces 213 can be used to guide the nut 92, so that the nut 92 can smoothly enter the front section from the rear section of the conveying trough 21.

[0037] Preferred, such as Figure 2 , Figure 11 As shown, the drive mechanism also includes a lifting device 42 located below the through hole 211. A motor 43 is provided at the top of its movable rod, and a disc 41 is coaxially located at the upper end of the main shaft of the motor 43. The lifting device 42 controls the lifting of the motor 43 and the disc 41, and the motor 43 controls the rotation of the disc 41.

[0038] Further preferred, such as Figure 11 As shown, the bottom of the motor 43 is provided with a support rod 431 parallel to its main shaft, and a cylindrical spring 44 is sleeved on its outside. The support rod 431 is coaxially inserted through the movable rod of the lifting device 42. The cylindrical spring 44 is located between the top surface of the movable rod and the bottom surface of the motor 43. The elastic force of the cylindrical spring 44 is used to apply an upward preload to the body 91. There is no need to use the lifting device 42 to continuously control the disc 41 to rise. The elastic force of the cylindrical spring 44 is sufficient to press the hexagonal prism on the outside of the body 91 into the V-groove 332.

[0039] Further preferred, such as Figure 3 , Figures 12 to 14 As shown, a positioning rod 411 is coaxially provided on the top of the disk 41 to position the inner hole of the nut 92, prevent the nut 92 from falling off during assembly, and ensure the positional accuracy between the nut 92 and the body 91.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to be the only or limiting of the invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from its scope are all within the protection scope of the present invention.

Claims

1. A cable connector pre-assembly device, the cable connector comprising a body (91) and a nut (92), wherein the outer helical end of the front end of the body (91) is provided with a claw, the middle section having a coaxially arranged hexagonal prism, and the outer end of the nut (92) having a hemispherical structure and the inner end having a planar structure, characterized in that, The pre-installed equipment includes a first discharge system, a second discharge system, a positioning mechanism, and a drive mechanism; The first material feeding system includes a strip groove (11) for arranging the body (91), with two horizontally arranged and parallel guide rails (12) extending forward at its front end for conveying the body (91), and a pusher plate (13) for pushing the body (91) is provided in the strip groove (11). The second discharge system includes a conveying trough (21), with a push plate (22) at its rear end that moves along the conveying direction. A through hole (211) is opened at the bottom of the front end of the conveying trough (21). The middle section of the conveying trough (21) has a blocking surface (212) protruding from the bottom surface. The protrusion height is less than half the size of the hemispherical structure protruding from the end face of the nut (92). One end of the blocking surface (212) is inclined towards the outside of the front end of the conveying trough (21). A discharge trough (23) is provided on the outside of the conveying trough (21) along the extension trajectory of the blocking surface (212). The positioning mechanism includes a first sensor (31), a second sensor (32), and a pair of baffles (33). The first sensor (31) is inserted through the side wall of one of the guide rails (12). The baffles (33) are respectively located above the two guide rails (12). The bottom surface of the baffles (33) is provided with a semi-circular groove (331). The two semi-circular grooves (331) have the same radius and are coaxial with the through hole (211). The top of the semi-circular groove (331) is provided with a V-shaped groove (332). When the first sensor (31) detects the body (91), the body (91) is coaxial with the semi-circular groove (331). The drive mechanism includes a disc (41) coaxially disposed below the through hole (211), the top surface of which matches the hemispherical structure of the nut (92). The disc (41) is moved vertically and rotates around its own axis.

2. The cable joint pre-assembly equipment according to claim 1, characterized in that, A hopper (14) is connected above the strip groove (11) for temporarily storing the main body (91). The height between the bottom surface of the hopper (14) facing the guide rail (12) and the bottom surface of the strip groove (11) is less than the length of the main body (91).

3. The cable joint pre-assembly equipment according to claim 1, characterized in that, The positioning mechanism also includes a third sensor (34) that passes downward through the baffle (33) to detect the position signal of the top surface of the hexagonal prism in the middle section of the body (91). When the third sensor (34) detects the position signal of the top surface of the hexagonal prism and the position signal disappears again, the disk (41) stops rotating and moves downward.

4. The cable joint pre-assembly equipment according to claim 1, characterized in that, Along the length of the guide rail (12), telescopic pins (35) are provided on both sides of the first sensor (31). The front end of the telescopic pin (35) is a spherical structure, and the rear end is provided with a telescopic spring (351). When the telescopic spring (351) is in its natural state, the spherical surface of the front end of the telescopic pin (35) protrudes from the inner wall of the guide rail (12). The same length position of both guide rails (12) is provided with telescopic pins (35) and telescopic springs (351). When the first sensor (31) detects the positioning signal of the body (91), the external thread of the front end of the body (91) contacts the front end of the telescopic pin (35).

5. A cable joint pre-assembly device according to claim 1, characterized in that, A baffle (24) is provided above the connection between the side wall of the conveying trough (21) and the discharge trough (23). A vertical guide rod (25) is provided on the side wall of the conveying trough (21). The two ends of the baffle (24) are slidably connected to the two guide rods (25). When the baffle (24) is in the lowest position, the distance between its bottom surface and the bottom surface of the discharge trough (23) is less than the height of the nut (92), and the height difference is less than the height of the hemispherical structure protruding from the end face of the nut (92).

6. The cable joint pre-assembly equipment according to claim 1, characterized in that, A storage trough (26) is provided on one side of the rear end of the conveying trough (21). The end of the storage trough (26) facing the conveying trough (21) is inclined downward. A horizontal bar (27) is provided above the connection between the storage trough (26) and the conveying trough (21). The distance between the horizontal bar (27) and the bottom surface of the conveying trough (21) is greater than the height of the nut (92) and less than the distance between the opposite sides of the hexagonal prism outside the nut (92).

7. A cable joint pre-assembly device according to claim 6, characterized in that, The width of the front section of the conveying groove (21) matches the distance between the opposite sides of the hexagonal prism on the outside of the nut (92). The width of the rear section of the conveying groove (21) is greater than or equal to the distance between the opposite edges of the hexagonal prism on the outside of the nut (92). The inner walls of the two side plates of the conveying groove (21) have stepped surfaces (213) at the junction of the front and rear sections of the conveying groove (21). The stepped surfaces (213) on both sides are staggered along the length of the conveying groove (21), and the staggered distance is greater than the width of the side of the hexagonal prism on the outside of the nut (92).

8. A cable joint pre-assembly device according to claim 1, characterized in that, The drive mechanism also includes a lifting device (42) located below the through hole (211), with a motor (43) on the top of its movable rod and a disc (41) coaxially located at the upper end of the motor (43) main shaft.

9. A cable joint pre-assembly device according to claim 8, characterized in that, The motor (43) has a support rod (431) at the bottom parallel to its main shaft, and a cylindrical spring (44) is sleeved on its outside. The support rod (431) is coaxially inserted through the movable rod of the lifting device (42), and the cylindrical spring (44) is located between the top surface of the movable rod and the bottom surface of the motor (43).

10. A cable joint pre-assembly device according to claim 1, characterized in that, The top of the disc (41) is coaxially provided with a positioning rod (411) for positioning the inner hole of the nut (92).

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