Automatic production line for wiring terminals

Abstract

The invention relates to the technical field of wiring terminal production, and discloses an automatic production line for wiring terminals, which comprises a product combination station, a bolt feeding station, a bolt locking station and a conveying track, and is characterized in that the conveying track sequentially passes through the product combination station, the bolt feeding station and the bolt locking station; the conveying track is provided with a conveying cavity used for containing the combined wiring terminals in the length direction of the conveying track. The bolt locking station is provided with a main pushing device and a main rotating device which are arranged on the two opposite sides of the conveying rail correspondingly. According to the invention, the reject ratio of wiring terminal assembly can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of terminal block production, and in particular to an automated production line for terminal blocks. Background Art

[0002] As a component of electrical connection, terminal blocks are widely used in many fields such as electronic equipment, communication equipment, and automobile manufacturing.

[0003] Existing terminal blocks, see Figure 1 and Figure 2 , including a main seat 1, a block 2, a clip 3 and a locking bolt 4. The block 2 has an adjustment hole in the middle, and one end of the clip 3 is placed in the adjustment hole of the block 2. An assembly groove 5 is arranged on one side of the main seat 1. The assembly groove 5 is for the matched block 2 and the clip 3 to be clamped into the main seat 1, and a countersunk hole 6 corresponding to the assembly groove 5 is opened on the other side opposite to the main seat 1. The countersunk hole 6 is used for the locking bolt 4 to pass through, so that the locking bolt 4 is threadedly connected to the block 2.

[0004] At present, when assembling the terminal block, an assembly machine is usually used to first assemble the main seat 1, the block 2 and the clip 3, and then the locking bolt 4 is screwed into the block 2. Referring to the Chinese patent document with publication number CN212908492U, an automatic assembly machine for terminal blocks is disclosed, which has a screw feeding mechanism and a screw locking mechanism. After the screw feeding mechanism pushes the screw into the main body, the screw thread is connected to the block through the screw locking mechanism; wherein the screw locking mechanism includes a first screw tightening head, a first servo motor and a first screw cylinder. When working, the first screw tightening head is driven to move forward by the first screw cylinder, and the first servo motor drives the first screw tightening head to rotate, so that the first screw tightening head screws the screw on the block.

[0005] Reference Figure 1 and Figure 2 For the existing terminal blocks, since the block 2 can move axially along the locking bolt 4 in the main seat 1, the stability of the block 2 is low during the process of threading the locking bolt 4 to the block 2, so that the position of the locking bolt 4 on the block 2 when threadedly connected in the main seat 1 is different. When the screw tightening head is rotated a certain number of times, the relative threaded insertion distance between the locking bolt 4 and the block 2 is different, which can easily lead to an increase in the defective rate of the product. Summary of the invention

[0006] In order to reduce the defective rate of terminal assembly, the present application provides an automated production line for terminal blocks.

[0007] The present application provides an automated production line for wiring terminals, which adopts the following technical solutions: An automated production line for wiring terminals, comprising a product assembly station, a bolt feeding station, a bolt locking station and a conveying track, wherein the conveying track passes through the product assembly station, the bolt feeding station and the bolt locking station in sequence, and the conveying track has a conveying cavity for accommodating assembled wiring terminals along its length direction; the bolt locking station is provided with a main pushing device and a main rotating device respectively on opposite sides of the conveying track; The main pushing device includes a first base, a first telescopic power and a pushing head; the first telescopic power is installed on the first base, and the output end of the first telescopic power controls the pushing head to move along a conveying direction perpendicular to the conveying track; and the first telescopic power can drive the pushing head to extend into the main seat and push the block to the inner wall of the main seat near the countersunk hole; The main rotating device includes a second base, a second telescopic power, a rotating power and a bolt head; the second telescopic power is installed on the second base, and the second telescopic power output end controls the rotating power to move along a conveying direction perpendicular to the conveying track; the rotating power output end controls the bolt head to rotate, and the rotating axis direction of the bolt head is perpendicular to the conveying direction of the conveying track; the conveying track is provided with a guide opening opposite to the bolt head, and the guide opening is used to be opposite to the locking bolt on the main seat, so that the locking bolt enters the guide opening when the locking bolt is pushed by the block, and at the same time, the bolt head can extend into the guide opening and dock with the head of the locking bolt.

[0008] By adopting the above technical solution, the main pushing device and the main rotating device arranged at the locking bolt station can, during the process of the locking bolt thread being connected to the block, the block is stably pushed to the inner wall of the main seat by the pushing head, so that during the process of the locking bolt thread moving to the block, the block is maintained in a fixed position and is not easy to move, thereby improving the assembly effect of the locking bolt and the block and reducing the defective rate of the product.

[0009] Optionally, the bolt head includes an inner joint, an outer sleeve seat and a first elastic member; the bolt head cooperates with the rotational power through the outer sleeve seat, and the bolt head is connected to the locking bolt through the inner joint; one end of the inner joint moves in the outer sleeve seat along the telescopic direction of the second telescopic power; the first elastic member is located in the outer sleeve seat and resists against the inner joint to give the inner joint an elastic force to move away from the outer sleeve seat.

[0010] By adopting the above technical solution, the movement of the inner joint in the outer sleeve and the elastic force of the first elastic member enable the bolt head to adapt to locking bolts of different sizes. During the docking process with the locking bolt, it stops moving forward due to the resistance of the locking bolt and rotates under the drive of the rotational force. When the rotational force rotates the inner joint to be opposite to the groove of the locking bolt head, the first elastic member can push the inner joint to engage with the locking bolt, so that the inner joint is not easily squeezed excessively.

[0011] Optionally, the inner joint comprises a docking section, an intermediate section and a reduced diameter section which are coaxially connected in sequence in a direction close to the outer sleeve; the docking section is used to extend into the guide opening and dock with the bolt joint; the reduced diameter section is cylindrical and coaxial with the rotation power output end, and the reduced diameter section moves in the outer sleeve away from one end of the intermediate section, and a step that shrinks inwardly toward the reduced diameter section is formed at the junction of the reduced diameter section and the intermediate section; The conveying track is formed with a recessed cavity at a side of the guide port away from the first base, the recessed cavity is used for the inner joint and the outer sleeve to move, and the conveying track is provided with a mounting seat at the recessed cavity, the mounting seat is provided with two abutment seats that slide along the conveying direction of the conveying track, and the two abutment seats are respectively opposite to the inner joint at two sides; a second elastic member is connected between the conveying track and the abutment seat, and the second elastic member is used to drive the abutment seat to move toward the inner joint; The mounting seat is also provided with a touch sensor, and the sensor is used to control the rotational power to stop; when the docking section drives the locking bolt head to lock in the countersunk hole, the reduced diameter section is opposite to the abutment seat, and at this time, the abutment seat is pushed by the second elastic member to abut against the outer wall of the reduced diameter section, and at the same time, the abutment seat abuts against the sensor, and the sensor transmits a signal to the rotational power to control the rotational power to stop rotating; The outer sleeve is connected to a linkage mechanism movable in the mounting seat, and the linkage mechanism drives the two abutment seats to move away from each other and away from the inner joint when the outer sleeve moves away from the conveying track, and the linkage mechanism releases the restriction on the distance between the two abutment seats when the outer sleeve moves toward the conveying track.

[0012] By adopting the above technical solution, through the cooperation of the abutment seat and the sensor, the driving of the rotational power can be stopped when the locking bolt is tightened into the countersunk hole of the main seat, so that the locking bolt is not easily over-tightened or under-tightened.

[0013] Optionally, the linkage mechanism includes a distance measuring seat, a rotating seat, a connecting rod and a limit seat; the distance measuring seat has two and corresponds to the abutment seat one by one, the distance measuring seat is connected to the corresponding abutment seat, and the two distance measuring seats are relatively moved in the mounting seat along the conveying direction of the conveying track; The rotating seat is coaxially rotatably sleeved on the outer sleeve; the connecting rod is connected between the rotating seat and the limit seat, and the limit seat is driven by the outer sleeve to move in the mounting seat along the second power telescopic direction, and the limit seat is simultaneously located between the two distance measuring seats, and the two distance measuring seats are pushed by the second elastic force to respectively abut on the opposite sides of the limit seat; The two opposite sides of the limit seat are provided with inclined surfaces, and the distance between the two inclined surfaces gradually decreases toward the direction approaching the connecting rod; when the abutment seat abuts against the reduced diameter section, the distance measuring seat is opposite to the end of the inclined surface close to the connecting rod, and the distance measuring seat is separated from the inclined surface. At this time, the outer sleeve is moved away from the conveying track, and the limit seat can push the two distance measuring seats away from each other through the inclined surface, so that a space for the inner joint to pass through is formed between the two distance measuring seats.

[0014] By adopting the above technical solution, the distance between the outer sleeve and the abutment seat is controlled through the linkage mechanism including the distance measuring seat, the rotating seat, the connecting rod and the limit seat. The inclined surface design on the limit seat enables the two distance measuring seats to be automatically pushed away from each other when the outer sleeve moves away from the conveying track, providing enough space for the inner joint to pass through.

[0015] Optionally, both of the two ranging seats are connected to racks, the two racks are parallel to each other and extend along the moving direction of the ranging seat, and the tooth surfaces of the two racks are opposite to each other. A gear rotatably connected to the mounting seat is meshed between the two racks, and the two abutment seats are mirror-symmetrical along the gear axis.

[0016] By adopting the above technical solution, through the cooperation of the rack and the gear, the two abutment seats can be synchronously moved in the direction of approaching or moving away from each other, thereby improving the stability and accuracy of the movement of the abutment seats.

[0017] Optionally, the abutment seat includes a base and a contact piece; the base is moved onto the mounting seat, the contact piece is connected to the side of the base facing the inner joint, the contact piece is arc-shaped, and the axis of the contact piece and the axis of the reduced diameter section are located on the same horizontal plane.

[0018] By adopting the above technical solution, the arc shape of the abutment piece can make the abutment piece better adapt to the shape of the inner joint, and can clamp the inner joint, thereby improving the stability of the inner joint during the process of screwing the thread into the locking bolt.

[0019] Optionally, the middle section is in a truncated cone shape, and the outer radial direction of the middle section gradually decreases toward the docking section.

[0020] By adopting the above technical solution, when the abutment seat of the truncated cone of the middle section abuts against the middle section, the abutment seat can give the middle section a thrust to move toward the conveying track through the push of the second elastic member to assist the movement of the inner joint.

[0021] Optionally, the docking section is detachably connected to the middle section.

[0022] By adopting the above technical solution, the butt joint section and the middle section are detachably connected, so that the butt joint sections of different sizes can be conveniently replaced when necessary to adapt to the heads of locking bolts of different sizes.

[0023] Optionally, the production line also includes a bolt loosening station, which has a secondary driving device and a secondary rotating device. The secondary driving device has the same structure as the main driving device, and the secondary rotating device has the same structure as the main rotating device. The rotation direction of the rotational force in the secondary rotating device is opposite to the rotation direction of the rotational force in the main rotating device.

[0024] By adopting the above technical solution, the locking bolt can be loosened through the auxiliary pushing device and the auxiliary rotating device, so that the locking bolt is easy to adjust when the terminal is put into use.

[0025] Optionally, the pushing head has magnetic attraction and can attract the locking bolt.

[0026] By adopting the above technical solution, the magnetic attraction of the pushing head can better attract and keep the position of the locking bolt stable during the process of pushing the block.

[0027] In summary, the present application includes at least one of the following beneficial effects: 1. When the push head pushes and presses the block, the bolt screw head pushes and rotates the locking bolt at the same time, so that the locking bolt is threadedly connected to the block and pressed against the countersunk hole, so as to improve the position consistency of the locking bolts in the main seat and the block, and reduce the defective rate of the terminal assembly; 2. The bolt head can be adjusted by the relative sliding of the inner joint and the outer sleeve to reduce the process extrusion of the locking bolt when the bolt head fails to connect with the locking bolt successfully; 3. Through the abutment between the abutment seat and the sensor, a sensor signal can be given when the bolt head pushes the locking bolt into the countersunk head, so that the sensor controls the rotation power to stop, thereby reducing the situation of insufficient and over-tightening of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the exploded structure of the terminal block; Figure 2 It is a cross-sectional view of the terminal block; Figure 3 is a top view of the first embodiment of the present application; Figure 4 It is a structural schematic diagram of Embodiment 1 of the present application; Figure 5 is a schematic diagram of the structure of the wiring terminal in the first embodiment of the present application; Figure 6 It is a structural schematic diagram of the bolt locking station in the first embodiment of the present application; Figure 7 yes Figure 6 A schematic diagram of the enlarged structure at A in the middle; Figure 8 is a schematic structural diagram of another state of the connection terminal in the first embodiment of the present application; Fig. 9 yes Figure 4 A schematic diagram of the enlarged structure at B in the middle; Fig.10 yes Figure 6 Cross-sectional view of the conveyor track at the center CC; Fig.11 It is a schematic diagram of the structure of other states of the connection terminal in the first embodiment of the present application; Fig.12 It is a structural diagram of Embodiment 2 of the present application; Fig.13 yes Fig.12 Schematic diagram of the enlarged structure at D in the middle; Fig.14 is a cross-sectional view of a bolt head in the second embodiment of the present application; Fig.15 This is a schematic diagram of the structure of the bolt head, the abutment seat and the linkage mechanism in the second embodiment of the present application; Fig.16 It is a schematic diagram of the structure of the cooperation between the abutment seat and the distance measuring seat in the second embodiment of the present application.

[0029] Description of reference numerals: 1. main seat; 2. block; 3. clip; 4. locking bolt; 5. assembly groove; 6. countersunk hole; 7. product assembly station; 8. bolt feeding station; 9. bolt locking station; 10. conveying track; 11. conveying cavity; 12. first base; 13. first telescopic power; 14. pushing head; 15. second base; 16. second telescopic power; 17. rotating power; 18. bolt screwing head; 19. guide port; 20. inner joint; 201. docking section; 202. middle section; 203. reduced diameter section; 21. outer sleeve seat; 22. first elastic member; 23. recessed cavity; 24. Mounting seat; 25. Abutment seat; 251. Base; 252. Abutment sheet; 26. Second elastic member; 27. Sensor; 28. Distance measuring seat; 29. ​​Rotating seat; 30. Connecting rod; 31. Limiting seat; 311. Distance changing section; 312. Maintaining section; 32. Inclined surface; 33. Rack; 34. Gear; 35. Bolt loosening station; 36. Auxiliary driving device; 37. Auxiliary rotating device; 38. Assembly mechanism; 39. Stop bar; 40. Extension cavity; 41. First movable seat; 42. Make way opening; 43. Second movable seat; 44. Travel portion; 45. Travel groove; 46. Touch portion. DETAILED DESCRIPTION

[0030] The following is combined with Figure 3-16 This application is described in further detail. Example

[0031] The present application embodiment discloses an automated production line for wiring terminals. Figure 3 The automated production line for terminal blocks includes a product assembly station 7, a bolt delivery station 8, a bolt locking station 9, a bolt loosening station 35 and a conveying track 10. The conveying track 10 can sequentially convey the products to the product assembly station 7, the bolt delivery station 8, the bolt locking station 9 and the bolt loosening station 35 through a pushing mechanism. The pushing mechanism pushes the product main seat 1 step by step through the cooperation of the telescopic cylinder and the push piece. This is the prior art and will not be elaborated here.

[0032] Reference Figure 4 and Figure 5 The main seat 1, the clip 3 and the block 2 are respectively sent to the product assembly station 7 through their respective vibration plates and feeding channels (not shown in the figure), and the main seat 1 enters the conveying track 10 at the product assembly station 7 from its own feeding channel. The clip 3 and the block 2 are first conveyed from their own feeding channels to the assembly mechanism 38 at the product assembly station 7, and the assembly mechanism 38 puts the block 2 onto the clip 3, and then the assembly mechanism 38 presses the assembled clip 3 and block 2 into the assembly groove 5 of the main seat 1, so that the clip 3 is positioned on the main seat 1 through its own limiting protrusion.

[0033] The main seat 1 after assembling the clip 3 and the block 2 is moved to the conveying track 10 at the bolt delivery station 8. At the bolt delivery station 8, the locking bolt 4 is inserted into the countersunk hole 6 of the main seat 1 through the air pipe (not shown in the figure). The locking bolt 4 pushes the block 2 toward the direction of the opening of the assembly groove 5 during the process of pushing on the main seat 1. At this time, the matching structure of the terminal parts refers to Figure 5 Among them, the assembly mechanism 38 at the product assembly station 7 and the bolt delivery station 8 and the assembly structures such as the air pipe are all existing technologies and will not be described in detail here.

[0034] Reference Figure 4 , Figure 6 and Figure 7 The length direction of the conveying track 10 extends in a straight line, and a conveying cavity 11 is formed inside the conveying track 10 for the main seat 1 to move along its length direction. The conveying cavity 11 of the conveying track 10 at the product assembly station 7 opens toward the assembly mechanism 38, so that the assembled block 2 and the clip 3 can be pressed into the main seat 1. The conveying track 10 is provided with a stopper 39 at the opening of the conveying cavity 11 at the other stations. When the main seat 1 is in the conveying track 10, the stopper 39 abuts against the lower half of the side of the main seat 1, and an extension cavity 40 is formed between the top surface of the stopper 39 and the conveying track 10 for the probe of the clip 3 to extend out of the main seat 1.

[0035] Reference Figure 4 and Figure 6 The main push device and the main rotating device are installed at the bolt locking station 9. The main push device is opposite to the side of the conveying track 10 having the extension cavity 40, and the main rotating device is opposite to the other side of the conveying track 10. When the main seat 1 moves to the bolt locking station 9 on the conveying track 10, the pushing mechanism drives the assembly grooves 5 on the main seat 1 to be opposite to the main push device one by one, and at the same time relative to the main rotating device.

[0036] The main pushing device is used to extend into the assembly groove 5 of the main seat 1 to push the block 2 toward the main rotating device, so that the block 2 abuts against the inner wall of the main seat 1 on the side close to the countersunk hole 6, and then the main rotating device pushes the locking bolt 4 toward the main pushing device and rotates it at the same time, so that the locking bolt 4 is threadedly connected to the block 2 and abuts against the countersunk hole 6.

[0037] Reference Figure 4 and Figure 6As for the main pushing device, the main pushing device includes a first base 12, a first telescopic power 13 and a pushing head 14. The first base 12 is opposite to the side of the conveying track 10, the first telescopic power 13 is a cylinder, the cylinder body of the first telescopic power 13 is fixedly installed on the first base 12, and the output end of the first telescopic power 13 is connected to the pushing head 14 through the first moving seat 41. The first telescopic power 13 is telescoped along the length direction of the vertical conveying track 10, and the first moving seat 41 slides on the first base 12 along the telescopic direction of the first telescopic power 13 to guide the movement of the pushing head 14.

[0038] Reference Figure 6 and Figure 7 The push head 14 is opposite to the extension cavity 40 , and a clearance opening 42 for making way for the clip 3 is opened in the middle of one end of the push head 14 away from the first movable seat 41 toward the first movable seat 41 .

[0039] When the output end of the first telescopic power 13 is recovered, the push head 14 is located outside the conveying track 10. When the output end of the first telescopic power 13 is extended, the push head 14 enters the assembly groove 5 of the main seat 1 from the extension cavity 40 and abuts against the block 2, and pushes the block 2 to abut against the inner wall of the main seat 1 near the countersunk hole 6, so as to push the locking bolt 4 to the outside of the main seat 1 until the head of the locking bolt 4 leaves the main seat 1. At this time, the matching structure of the terminal parts is referred to Figure 8 .

[0040] Reference Fig. 9 As for the main rotating device, the main rotating device includes a second base 15, a second telescopic power 16, a rotating power 17 and a bolt screw head 18. The second base 15 is opposite to the side of the conveying track 10, the second telescopic power 16 is a cylinder, the cylinder body of the second telescopic power 16 is fixed on the second base 15, and the output end of the second telescopic power 16 is connected to the rotating power 17 through the second moving seat 43. The telescopic direction of the output end of the second telescopic power 16 is on the same straight line as the telescopic direction of the output end of the first telescopic power 13, and the second base 15 slides on the second base 15 along the telescopic direction of the second telescopic power 16 to improve the stability of the movement of the rotating power 17.

[0041] Reference Figure 4 and Fig. 9 The rotating power 17 is a rotating motor, the seat of the rotating power 17 is fixed on the second base 15, the rotation axis of the output end of the rotating power 17 extends in a direction parallel to the extension direction of the second extension power 16, and the output end of the rotating power 17 is connected to the bolt screw head 18 through a coupling to drive the bolt screw head 18 to rotate. Figure 8In the present embodiment, the groove on the head of the locking bolt 4 is a straight groove, and the head of the bolt screw head 18 is adaptable and is in the shape of a flat head for inserting into the straight groove; in other embodiments, the groove on the head of the locking bolt 4 can also be a cross groove, a rice groove, a hexagonal groove, etc., and the shape of the head of the locking bolt 4 is adapted to the groove type of the locking bolt 4.

[0042] Reference Figure 6 and Fig. 9 More preferably, the axis extension direction of the bolt screw head 18 and the length extension direction of the push head 14 are in the same straight line. Fig.10 A concave cavity 23 and a guide opening 19 are sequentially provided on the side of the conveying track 10 away from the stop bar 39 and toward the stop bar 39, and the guide opening 19 is connected between the conveying cavity 11 and the concave cavity 23. The concave cavity 23 is used to make way for the bolt head 18, and the lower part of the guide opening 19 is in an arc shape with the same arc as the head of the locking bolt 4, for the locking bolt 4 and the bolt head 18 to enter.

[0043] When the output end of the second telescopic power 16 is recovered, the head of the bolt screw head 18 is located in one end of the guide opening 19 close to the recessed cavity 23 .

[0044] Reference Figure 6 and Fig.10 When the block 2 pushes the head of the locking bolt 4 outward, the head of the locking bolt 4 and part of the rod enter the guide opening 19, and then the output end of the second telescopic power 16 is extended, and the output end of the rotating power 17 is rotated at the same time, so that the bolt screw head 18 rotates forward. During the forward process, the bolt screw head 18 can be inserted into the head of the locking bolt 4 to drive the locking bolt 4 to rotate forward together, thereby threading the locking bolt 4 to the block 2 until the head of the locking bolt 4 is tightly pressed against the countersunk hole 6. At this time, the matching structure of the terminal parts refers to Fig.11 .

[0045] Furthermore, a magnet is embedded in the push head 14 (not shown in the figure), and the main seat 1 and the block 2 are both made of plastic, the clip 3 is made of copper, and the locking bolt 4 is made of iron. When the push head 14 is extended into the main seat 1, the magnetic attraction of the push head 14 can pass through the block 2 and the clip 3 to attract the locking bolt 4, so that when the push head 14 drives the block 2 to push the locking bolt 4, the locking bolt 4 is able to resist the inertia force by the magnetic attraction of the push head 14, so that the locking bolt 4 is not easy to move excessively and completely detach from the main seat 1, so as to improve the stability of the locking bolt 4 and the accuracy of assembly with the main seat 1.

[0046] Reference Figure 4 and Fig.10After the locking bolts 4 on the main seat 1 are all threadedly connected with the block 2, the main seat 1 is sent to the bolt loosening station 35, which has a secondary pusher 36 and a secondary rotating device 37, which are respectively located on opposite sides of the conveying track 10. The secondary pusher 36 has the same structure as the main pusher and is on the same side as the main pusher, and the secondary rotating device 37 has the same structure as the main rotating device and is on the same side as the main rotating device, and the rotation direction of the rotation power 17 of the secondary rotating device 37 is opposite to the rotation direction of the rotation power 17 of the main rotating device, and the conveying track 10 also has a recessed cavity 23 and a guide port 19 at the bolt loosening station 35.

[0047] At the bolt loosening station 35, the pushing head 14 of the auxiliary pushing device 36 first presses the block 2 against the main seat 1, and then the bolt screwing head 18 of the auxiliary rotating device 37 extends into the countersunk hole 6 to dock with the head of the locking bolt 4, and then the auxiliary rotating device 37 drives the head of the locking bolt 4 to rotate in the opposite direction and retreat at the same time to loosen the locking bolt 4, so as to adjust the pre-tightening force of the locking bolt 4 and reduce the stress concentration phenomenon of the terminal before use.

[0048] In addition, the conveying track 10 has a pressing block that can be extended into the conveying cavity 11 when it moves up and down at each station. The pressing block is used to press the main seat 1 during the assembly operation to improve the stability of the main seat 1.

[0049] The implementation principle of an automated production line for terminal blocks in an embodiment of the present application is as follows: after the locking bolt 4 is sent into the main seat 1, the terminal block is sent to the locking bolt station 9, and the first telescopic power 13 first drives the pushing head 14 to move to the main seat 1 to press against the block 2, so that the block 2 pushes the head of the locking bolt 4 and part of the rod into the guide opening 19, and then the output end of the second telescopic power 16 extends out, and at the same time, the output end of the rotating power 17 drives the bolt head 18 to rotate, so that the bolt head 18 enters the guide opening 19 and docks with the head of the locking bolt 4, and screws the locking bolt 4 onto the block 2 in a direction close to the block 2, so that the locking bolt 4 presses against the countersunk hole 6, and then the first telescopic power 13 and the second telescopic power 16 retreat to drive the pushing head 14 and the bolt head 18 to leave the main seat 1.

[0050] After the block 2 is threadedly connected with the locking bolt 4, the terminal block moves to the bolt loosening station 35, and the locking bolt 4 is loosened by the auxiliary pushing device 36 and the auxiliary rotating device 37, and the assembled terminal block leaves the production line from the bolt loosening station 35. Example

[0051] The difference between this embodiment and the first embodiment lies in the difference in the structure of the bolt screw head 18. Specifically, in this embodiment, refer to Fig.12 , Fig.13 and Fig.14The bolt head 18 includes an inner joint 20 , an outer sleeve seat 21 and a first elastic member 22 .

[0052] Specifically, the outer sleeve 21 is cylindrical and connected to the output end of the rotating power 17 through a coupling, and the outer sleeve 21 is coaxial with the output end of the rotating power 17. One end of the inner joint 20 slides coaxially in the outer sleeve 21, and the other end of the inner joint 20 extends from the end of the outer sleeve 21 away from the rotating power 17 and has a flat head for docking with the locking bolt 4, and the outer peripheral wall of the inner joint 20 at one end of the outer sleeve 21 has a block 2-shaped stroke portion 44, and the inner wall of the outer sleeve 21 is provided with a stroke groove 45 for the stroke portion 44 to slide along the axial direction parallel to the outer sleeve 21, and the stroke groove 45 does not pass through the end of the outer sleeve 21. The cooperation between the stroke portion 44 and the stroke groove 45 limits the rotation of the inner joint 20 relative to the outer sleeve 21, and guides the sliding of the inner joint 20 relative to the outer sleeve 21.

[0053] The first elastic member 22 is a spring, which is located in the outer sleeve seat 21 and one end of which is connected to the inner end wall of the outer sleeve seat 21, and the other end of the first elastic member 22 is connected to the end of the inner joint 20 located in the outer sleeve seat 21. The first elastic member 22 is always in a compressed state in the outer sleeve seat 21, so that the first elastic member 22 always gives the inner joint 20 an elastic force to move away from the outer sleeve seat 21.

[0054] Reference Fig.11 and Fig.14 When the second telescopic power 16 drives the outer sleeve 21 to move forward continuously and the inner joint 20 abuts against the head of the locking bolt 4 but is not stuck in the slot, the inner joint 20 can be stopped from moving forward by the resistance of the locking bolt 4 while rotating, until the inner joint 20 rotates until the flat head is opposite to the slot of the locking bolt 4, and the inner joint 20 is pushed by the first elastic member 22 and stuck in the slot, thereby reducing the excessive wear of the bolt by the bolt head 18 caused by the angular error between the bolt head 18 and the slot of the locking bolt 4 during the forward movement.

[0055] Reference Fig.13 and Fig.14Further, the inner joint 20 includes a docking section 201, an intermediate section 202 and a reduced diameter section 203 which are sequentially connected in a direction close to the outer sleeve seat 21, and the docking section 201, the intermediate section 202 and the reduced diameter section 203 are all coaxial with the rotating power 17. The end of the docking section 201 close to the intermediate section 202 is cylindrical, and the end of the docking section 201 away from the intermediate section 202 is a flat head for docking with the locking bolt 4, and the docking section 201 is used to extend into the guide opening 19 to dock with the locking bolt 4. The intermediate section 202 is in a truncated cone shape, and the outer diameter of the end of the intermediate section 202 close to the docking section 201 is larger than the outer diameter of the end of the intermediate section 202 close to the reduced diameter section 203, and the outer diameter of the end of the intermediate section 202 close to the docking section 201 is larger than the outer diameter of the docking section 201. The reduced diameter section 203 is cylindrical, and the outer diameter of one end of the middle section 202 close to the reduced diameter section 203 is larger than the outer diameter of the reduced diameter section 203 , so that an inwardly contracted step is formed from the middle section 202 to the reduced diameter section 203 .

[0056] The docking section 201 and the middle section 202 are both located outside the outer sleeve seat 21 , one end of the reduced diameter section 203 away from the middle section 202 coaxially slides in the outer sleeve seat 21 , and the travel portion 44 is disposed on the reduced diameter section 203 .

[0057] Reference Fig.12 and Fig.13 The conveying track 10 is fixed with a mounting seat 24 located below the inner joint 20 at the recessed cavity 23 at the locking bolt station 9. Two touch sensors 27 are installed on the mounting seat 24. The two sensors 27 are respectively opposite to the two sides of the inner joint 20. The sensors 27 are electrically connected to the rotating power 17 to control the stop of the rotating motor. At the same time, the mounting seat 24 slides along the length direction of the conveying track 10 and has two abutment seats 25. The two abutment seats 25 are respectively opposite to the two sides of the inner joint 20. The two abutment seats 25 move on the mounting seat 24 in a direction of approaching or moving away from each other, and a second elastic member 26 is connected between the two abutment seats 25 and the conveying track 10. The second elastic member 26 is a spring, which is used to drive the abutment seats 25 to move toward the inner joint 20, so that the two abutment seats 25 can clamp the inner joint 20 together.

[0058] Reference Fig.11 , Fig.13 and Fig.15 When the butt joint section 201 abuts against the head of the locking bolt 4 and drives the locking bolt 4 to move the thread to abut against the countersunk hole 6, the abutment seat 25 is opposite to the end of the reduced diameter section 203 close to the middle section 202. At this time, the abutment seat 25 can be moved to abut against the outer wall of the reduced diameter section 203 under the elastic force of the second elastic member 26. At the same time, the abutment seat 25 abuts against the sensor 27, and the sensor 27 transmits a signal to the rotating power 17 to stop the rotating power 17, so that the rotating power 17 can be stopped in time according to the position of the thread of the locking bolt 4, thereby improving the assembly effect of the locking bolt 4.

[0059] Reference Fig.13 and Fig.16 More specifically, each abutting seat 25 includes a base 251 and an abutting piece 252. The base 251 moves on the mounting seat 24, and the abutting piece 252 is fixed to a side of the base 251 facing the inner joint 20 and is located above the mounting seat 24. The base 251 has a contact portion 46 for contacting with the sensor 27, and the contact portion 46 is in the shape of a block 2.

[0060] Reference Fig.15 The contact piece 252 is in an arc shape with the arc opening facing the inner joint 20, the inner diameter of the contact piece 252 is consistent with the maximum outer diameter of the middle section 202, and the axis of the contact piece 252 and the axis of the middle section 202 are located on the same horizontal plane, so that when the contact piece 252 contacts the middle section 202, the contact piece 252 contacts the outer wall of the middle section 202 through the center of its own arc opening, so as to improve the stability of the inner joint 20. At the same time, when the contact piece 252 contacts the outer wall of the middle section 202, through the change of the outer diameter of the middle section 202, the contact piece 252 can give the middle section 202 a thrust to move away from the outer sleeve seat 21, so as to assist the middle section 202 to move forward.

[0061] Reference Fig.12 and Fig.13 In addition, the outer sleeve 21 is connected with a linkage mechanism, which extends into the mounting seat 24. When the outer sleeve 21 moves, the linkage mechanism is driven to move in the mounting seat 24. The linkage mechanism is used to adjust the distance between the two abutting seats 25, so that after the abutting seats 25 abut against the reduced diameter section 203, when the outer sleeve 21 moves away from the conveying track 10, the two abutting seats 25 can move away from each other under the drive of the linkage mechanism to loosen the inner joint 20, so that the inner joint 20 can be separated from the locking bolt 4 in the direction away from the conveying track 10 and withdraw from the main seat 1.

[0062] Reference Fig.12 , Fig.14 and Fig.15 , wherein the linkage mechanism includes a distance measuring seat 28, a rotating seat 29, a connecting rod 30 and a limiting seat 31. The rotating seat 29 is annular, coaxially sleeved and rotated on the outer wall of the outer sleeve 21, and the outer wall of the outer sleeve 21 is provided with an annular groove for the rotating seat 29 to be inserted. The connecting rod 30 is L-shaped, one end of the connecting rod 30 is fixed to the bottom of the rotating seat 29, and the other end of the connecting rod 30 is away from the mounting seat 24 and connected to the limiting seat 31. The limiting seat 31 is in the shape of a plate with a horizontal surface, and the limiting seat 31 moves in the mounting seat 24 along the telescopic direction of the second telescopic power 16, and the connecting rod 30 is connected to one end of the limiting seat 31 close to the second telescopic power 16.

[0063] The limiting seat 31 includes a variable distance section 311 and a maintaining section 312 in sequence along the telescopic direction of the second telescopic power 16, and the variable distance section 311 is closer to the second telescopic power 16 than the maintaining section 312. The variable distance section 311 is trapezoidal, and specifically, both opposite sides of the variable distance section 311 along the length direction of the conveying track 10 are inclined surfaces 32, and the two inclined surfaces 32 are mirror-symmetrical along the axis of the inner joint 20, and the distance between the two inclined surfaces 32 gradually decreases away from the maintaining section 312. The maintaining section 312 is square, and the distance between the opposite sides of the maintaining section 312 along the length direction of the conveying track 10 is consistent with the distance between the two inclined surfaces 32 close to one end of the maintaining section 312, so that the variable distance section 311 and the maintaining section 312 have a smooth transition.

[0064] The distance measuring seat 28 is in an inverted T shape and has two, and the two distance measuring seats 28 are both moved in the mounting seat 24 along the length direction of the conveying track 10, and the two distance measuring seats 28 are respectively opposite to the two sides of the limit seat 31, and the tops of the two distance measuring seats 28 are respectively fixedly connected to the bottoms of the two bases 251, so that the distance measuring seats 28 and the connected bases 251 move together. It should be noted that the distance between the two distance measuring seats 28 is always greater than the distance between the two abutment sheets 252.

[0065] Reference Fig.14 and Fig.15 When the second telescopic power 16 drives the docking section 201 forward to the process of being about to contact the pushed-out locking bolt 4, the docking section 201 is not resisted by the locking bolt 4, so the travel portion 44 abuts against one end of the travel groove 45 close to the middle section 202, and the two distance measuring seats 28 are respectively abutted against the opposite sides of the maintaining section 312 by the thrust of the second elastic member 26. At this time, the distance between the two contact pieces 252 is greater than the maximum outer diameter of the middle section 202.

[0066] When the second telescopic power 16 drives the docking section 201 forward to initially contact the pushed out locking bolt 4, the docking section 201 is resisted by the locking bolt 4, so the docking section 201 stops moving forward while rotating, and the outer sleeve seat 21 continues to move forward. The outer sleeve seat 21 moves to the end of the variable distance section 311 away from the maintaining section 312 and stops moving when it is opposite to the distance measuring seat 28. At this time, the middle section 202 is located between the two contact pieces 252, and the two contact pieces 252 are pushed against the outer wall of the middle section 202 by the thrust of the second elastic member 26, and a gap is left between the two distance measuring seats 28 and the relative inclined surfaces 32 for the contact pieces 252 to move.

[0067] After the outer sleeve seat 21 stops moving, the butt joint section 201 has a tendency to move away from the outer sleeve seat 21 due to the elastic force of the first elastic member 22 and the second elastic member 26 .

[0068] Reference Fig.12 , Fig.14and Fig.15 When the docking section 201 rotates to dock with the head of the locking bolt 4, the docking section 201 moves away from the outer sleeve seat 21 while rotating until the abutting piece 252 abuts against the reduced diameter section 203, driving the touch portion 46 to abut against the sensor 27 to stop the rotation of the rotating power 17. At this time, there is still a gap between the distance measuring seat 28 and the inclined surface 32, and the distance between the inner wall of the end of the travel groove 45 close to the conveying track 10 and the travel portion 44 is greater than the length of the variable distance section 311 along the telescopic direction of the second telescopic power 16.

[0069] Thus, when it is necessary to reset the docking section 201 away from the locking bolt 4, the second telescopic power 16 first drives the outer sleeve seat 21 and the limit seat 31 to move away from the conveying track 10, so that the limit seat 31 guides the two distance measuring seats 28 to respectively abut against the two sides of the maintaining section 312 through the inclined surface 32, so as to drive the two contact pieces 252 to move away from each other and away from the reduced diameter section 203 to release the lock on the inner joint 20, so that the second telescopic power 16 drives the inner joint 20 to move away from the assembled terminal in the direction away from the conveying track 10, and then makes it difficult for the inner joint 20 to rub against the contact piece when moving in the resetting direction, so as to extend the service life of the inner joint 20.

[0070] Reference Fig.16 Furthermore, racks 33 are fixed on opposite sides of the two distance measuring seats 28. Fig.13 The racks 33 on the two distance measuring seats 28 extend along the length direction of the conveying track 10 and are parallel to each other. The tooth pitches of the two racks 33 are consistent and the tooth surfaces are opposite. A gear 34 is meshed between the two racks 33. The gear 34 is rotatably connected to the mounting seat 24, and the gear 34 is located directly below the inner joint 20. The two distance measuring seats 28 are radially symmetrical along the axis of the gear 34, and the two contact pieces 252 are also radially symmetrical along the axis of the gear 34, so that the two contact pieces 252 can move radially relative to the inner joint 20, improving the symmetry of the two contact pieces 252 when moving. In addition, the gear 34 and the rack 33 are both located below the limit seat 31 and do not interfere with the limit seat 31.

[0071] Reference Fig.14 Furthermore, the docking section 201 is detachably connected to the middle section 202 by bolts to improve the convenience of replacing and repairing the docking section 201, and the size of the docking section 201 can be adjusted according to the size of the locking bolt 4.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automated production line for terminal blocks, Features: The invention comprises a product assembly station (7), a bolt feeding station (8), a bolt locking station (9) and a conveying track (10), wherein the conveying track (10) passes through the product assembly station (7), the bolt feeding station (8) and the bolt locking station (9) in sequence, and the conveying track (10) has a conveying cavity (11) for accommodating assembled wiring terminals along its length direction; the bolt locking station (9) is provided with a main pushing device and a main rotating device respectively on two opposite sides of the conveying track (10); The main pushing device comprises a first base (12), a first telescopic power (13) and a pushing head (14); the first telescopic power (13) is installed on the first base (12), and the output end of the first telescopic power (13) controls the pushing head (14) to move along a conveying direction perpendicular to the conveying track (10); and the first telescopic power (13) can drive the pushing head (14) to extend into the main base (1) and push the block (2) to the inner wall of the main base (1) close to the countersunk hole (6); The main rotating device comprises a second base (15), a second telescopic power (16), a rotational power (17) and a bolt screw head (18); the second telescopic power (16) is mounted on the second base (15), and the output end of the second telescopic power (16) controls the rotational power (17) to move in a direction perpendicular to the conveying direction of the conveying track (10); the output end of the rotational power (17) controls the bolt screw head (18) to rotate, and the direction of the rotation axis of the bolt screw head (18) is perpendicular to the conveying direction of the conveying track (10); the conveying track (10) has a guide opening (19) opposite to the bolt screw head (18), and the guide opening (19) is used to be opposite to the locking bolt (4) on the main seat (1), so that the locking bolt (4) enters the guide opening (19) when the locking bolt (4) is pushed by the block (2), and at the same time, the bolt screw head (18) can extend into the guide opening (19) and dock with the head of the locking bolt (4).

2. An automated production line for wiring terminals according to claim 1, Features: The bolt screw head (18) comprises an inner joint (20), an outer sleeve (21) and a first elastic member (22); the bolt screw head (18) cooperates with the rotational power (17) through the outer sleeve (21), and the bolt screw head (18) is butted with the locking bolt (4) through the inner joint (20); one end of the inner joint (20) moves in the outer sleeve (21) along the telescopic direction of the second telescopic power (16); the first elastic member (22) is located in the outer sleeve (21) and abuts against the inner joint (20) to provide the inner joint (20) with an elastic force to move in a direction away from the outer sleeve (21).

3. An automated production line for wiring terminals according to claim 2, Features: The inner joint (20) comprises a docking section (201), an intermediate section (202) and a reduced diameter section (203) which are coaxially connected in sequence in a direction close to the outer sleeve (21); the docking section (201) is used to extend into the guide opening (19) to dock with the bolt joint; the reduced diameter section (203) is cylindrical and coaxial with the output end of the rotating power (17); one end of the reduced diameter section (203) away from the intermediate section (202) moves in the outer sleeve (21); and a step that shrinks inwards toward the reduced diameter section (203) is formed at the junction of the reduced diameter section (203) and the intermediate section (202); The conveying track (10) is formed with a recessed cavity (23) on a side of the guide opening (19) away from the first base (12), the recessed cavity (23) being used for the movement of the inner joint (20) and the outer sleeve (21), and the conveying track (10) is provided with a mounting seat (24) at the recessed cavity (23), the mounting seat (24) having two abutment seats (25) sliding along the conveying direction of the conveying track (10), the two abutment seats (25) being respectively located at two opposite sides of the inner joint (20); a second elastic member (26) is connected between the conveying track (10) and the abutment seat (25), the second elastic member (26) being used for driving the abutment seat (25) to move in a direction close to the inner joint (20); A touch sensor (27) is also provided on the mounting seat (24), and the sensor (27) is used to control the rotational power (17) to stop; when the docking section (201) drives the head of the locking bolt (4) to be locked in the countersunk hole (6), the reduced diameter section (203) is opposite to the abutment seat (25), and at this time, the abutment seat (25) is pushed by the second elastic member (26) to abut against the outer wall of the reduced diameter section (203), and at the same time, the abutment seat (25) abuts against the sensor (27), and the sensor (27) transmits a signal to the rotational power (17) to control the rotational power (17) to stop rotating; The outer sleeve (21) is connected to a linkage mechanism movable in the mounting seat (24); the linkage mechanism drives the two abutment seats (25) to move away from each other from the inner joint (20) when the outer sleeve (21) moves away from the conveying track (10); and the linkage mechanism releases the restriction on the distance between the two abutment seats (25) when the outer sleeve (21) moves toward the conveying track (10).

4. An automated production line for terminal blocks according to claim 3, Features: The linkage mechanism comprises a distance measuring seat (28), a rotating seat (29), a connecting rod (30) and a limit seat (31); the distance measuring seat (28) has two and corresponds to the abutment seat (25) one by one, the distance measuring seat (28) is connected to the corresponding abutment seat (25), and the two distance measuring seats (28) are relatively moved in the mounting seat (24) along the conveying direction of the conveying track (10); The rotating seat (29) is coaxially rotatably sleeved on the outer sleeve (21); the connecting rod (30) is connected between the rotating seat (29) and the limiting seat (31); the limiting seat (31) is driven by the outer sleeve (21) to move in the mounting seat (24) along the second dynamic telescopic direction, and the limiting seat (31) is simultaneously located between the two distance measuring seats (28); the two distance measuring seats (28) are pushed by the second elastic force to respectively abut against opposite sides of the limiting seat (31); The two opposite sides of the limiting seat (31) are provided with inclined surfaces (32), and the distance between the two inclined surfaces (32) gradually decreases in the direction approaching the connecting rod (30); when the abutting seat (25) abuts against the reduced diameter section (203), the distance measuring seat (28) is opposite to an end of the inclined surface (32) close to the connecting rod (30), and the distance measuring seat (28) is separated from the inclined surface (32). At this time, the outer sleeve seat (21) is moved in a direction away from the conveying track (10), and the limiting seat (31) can push the two distance measuring seats (28) in a direction away from each other through the inclined surface (32), so that a space for the inner joint (20) to pass through is formed between the two distance measuring seats (28).

5. An automated production line for wiring terminals according to claim 4, Features: The two distance measuring seats (28) are both connected to a rack (33), the two racks (33) are parallel to each other and extend along the moving direction of the distance measuring seat (28), and the tooth surfaces of the two racks (33) are opposite to each other, a gear (34) rotatably connected to the mounting seat (24) is meshed between the two racks (33), and the two abutment seats (25) are mirror-symmetrical along the axis of the gear (34).

6. An automated production line for terminal blocks according to claim 3, Features: The abutment seat (25) comprises a base (251) and a contact piece (252); the base (251) is moved onto the mounting seat (24), the contact piece (252) is connected to a side of the base (251) facing the inner joint (20), the contact piece (252) is in an arc shape, and the axis of the contact piece (252) and the axis of the reduced diameter section (203) are located on the same horizontal plane.

7. An automated production line for wiring terminals according to claim 3, Features: The middle section (202) is in the shape of a truncated cone, and the outer diameter of the middle section (202) gradually decreases in a direction approaching the docking section (201).

8. An automated production line for terminal blocks according to claim 3, Features: The docking section (201) is detachably connected to the middle section (202).

9. An automated production line for wiring terminals according to claim 2, Features: The production line also includes a bolt loosening station (35), wherein the bolt loosening station (35) is provided with an auxiliary driving device (36) and an auxiliary rotating device (37), wherein the auxiliary driving device (36) has the same structure as the main driving device, and the auxiliary rotating device (37) has the same structure as the main rotating device, and the rotation direction of the rotating power (17) in the auxiliary rotating device (37) is opposite to the rotation direction of the rotating power (17) in the main rotating device.

10. An automated production line for wiring terminals according to claim 1, Features: The pushing head (14) has a magnetic attraction force and is capable of attracting the locking bolt (4).

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