Plug-in mechanism suitable for terminal plug-in machine

Abstract

The invention relates to the technical field of plug-in machines, and discloses a plug-in mechanism suitable for a terminal plug-in machine, which comprises a plug-in head body, the pin bending part comprises a machine base, and the machine base is connected with a bending annular plate attached to an external terminal pin through a shaft rod rotationally connected to the interior of the machine base. The plug-in mechanism suitable for the terminal plug-in machine can effectively solve the problems that in the prior art, after a terminal is plugged into a PCB, a pin of the terminal needs to be bent to a designated position so as to prevent the terminal from falling off or ensure the stability of electrical connection, the step is usually completed by using a special bending tool or machine after the terminal is plugged in, and the cost is high. As the terminal plug-in is quickly inserted into the printed circuit board, the plug-in head still needs to wait for resetting after the pins are bent by the conventional bending tool or machine efficiency every time, so that the problems that the next movement of the printed circuit board and the terminal plug-in is interfered, and the automatic production takt of the plug-in head cannot be quickly adapted are solved.

Description

Technical Field

[0001] The invention relates to the technical field of plug-in machines, and in particular to a plug-in mechanism suitable for a terminal plug-in machine. Background Art

[0002] Terminal Insertion Machine is an automated device used to accurately and quickly insert terminal plug-ins (also called terminal blocks) into corresponding holes on printed circuit boards (PCBs) in the electronics manufacturing industry; its main function is to achieve high efficiency and precision in the assembly process of electronic components, especially in mass production.

[0003] Some terminals are designed with special bending areas. After these terminals are inserted into the PCB, their pins need to be bent to a specified position to prevent the terminals from falling off or to ensure the stability of the electrical connection. This design is usually used to prevent the terminals from falling off due to external force before welding. If the product may be subjected to large vibrations or shocks during transportation or use, the bent pins can provide additional fixing effects, and the bent pins must be fixed by appropriate crimping or welding. If it is decided to bend the pins, a special bending tool or machine is usually used to complete this step after the terminal is inserted to ensure the consistency and accuracy of the bending. Since the terminal plug-in is inserted into the printed circuit board very quickly, the conventional bending tool or machine efficiency is that after each pin bend, the plug-in head needs to wait for it to reset to avoid interfering with the next movement of the printed circuit board and the terminal plug-in, and cannot quickly adapt to the automated production rhythm of the plug-in head. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an insertion mechanism suitable for a terminal insertion machine, which can effectively solve the problem in the prior art that after the terminal is inserted into the PCB, its pins need to be bent to a specified position to prevent the terminal from falling off or to ensure the stability of the electrical connection. Usually, a special bending tool or machine is used to complete this step after the terminal is inserted. Since the terminal plug-in is inserted into the printed circuit board very quickly, the conventional bending tool or machine is inefficient. After each pin bending, the plug-in head needs to wait for it to reset to avoid interfering with the next movement of the printed circuit board and the terminal plug-in, and cannot quickly adapt to the automated production rhythm of the plug-in head.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an insertion mechanism suitable for a terminal insertion machine, comprising:

[0009] Plug-in head body;

[0010] The pin bending part includes a machine base, and the machine base is connected to a bending ring plate that fits with the external terminal pin by rotating a shaft connected inside the machine base, and the bending ring plate adopts an open design. In the initial state, the opening end of the bending ring plate faces upward, and the horizontal plane of the port is lower than the bottom end of the external terminal pin;

[0011] Wherein, the thickness of the bent ring plate gradually becomes thinner along its rotation direction;

[0012] Wherein, the interior of the bending ring plate is provided with an internal part which can be used to adjust the thickness thereof.

[0013] Furthermore, the bending ring plate adopts an integrated molding structure, and the bending ring plate includes a guide plate, a transition thin plate, a bending plate and a bonding plate. The arc-shaped slope of the guide plate, the arc-shaped slope of the transition thin plate and the arc-shaped slope of the bending plate are seamlessly connected in sequence, the end face of the guide plate is fixedly connected to the end face of the bonding plate, and the inner side of the bending plate is bonded to the outer surface of the bonding plate.

[0014] Furthermore, the bending plates are provided with two and are symmetrically distributed on the outer surface of the bonding plate, the built-in component is located in the cavity surrounded by adjacent bending plates, and the interior of the bending plates is respectively provided with a built-in hole and a rotation hole.

[0015] Furthermore, the built-in component includes a support, a support leg of the support is fixedly connected to the outer surface of the bonding plate, a bidirectional threaded rod is rotatably connected inside the support, and a fine-tuning cylinder is threadedly connected to the outer end of the bidirectional threaded rod.

[0016] Furthermore, the fine-tuning cylinder is provided with two and is symmetrically distributed with the bidirectional threaded rod as the center. The fine-tuning cylinder is located in the built-in hole, and the diameter of the fine-tuning cylinder is smaller than the inner diameter of the built-in hole. The circumferential outer surface of the fine-tuning cylinder is rotatably connected to the inner wall of the rotating hole through a rotating rod.

[0017] Furthermore, an adjustment hole is provided on the circumferential outer surface of the support, a connecting frame is fixedly connected to the side of the support close to the adjustment hole, and a large gear is rotatably connected inside the connecting frame, a small gear ring is sleeved on the circumferential outer surface of the bidirectional threaded rod that is meshed with the large gear, a hexagonal rod is fixedly connected to the end face of the large gear, and a positioning rod that fits tightly with the large gear is internally threadedly connected to the connecting frame.

[0018] Furthermore, the inner side of the bending plate adopts a magnetic design, and the inner side of the bending plate is magnetically connected to the outer surface of the bonding plate.

[0019] Beneficial Effects

[0020] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0021] The present invention is provided with a pin bending part. When the external driving unit is started, the bending ring plate is driven by the shaft to rotate counterclockwise as a whole. The guide plate rotates and enters between adjacent pins. As the bending ring plate rotates continuously, the guide plate begins to transition to the bending plate. The distance between the arc-shaped inclined surfaces of the two bending plates is greater than the distance between the arc-shaped inclined surfaces of the guide plate. The bending plate begins to contact the pins and starts to open the two pins outward to complete the bending action. The bending angle of the pin depends on the maximum distance between adjacent bending plates. Only when the adjacent bending plates are completely separated from the pins, the pins are considered to be bent. At this time, the bending plate has completed a cycle of rotation (simple operation and fast speed). The plug-in head body does not need to wait for it to reset, and can quickly drive the PCB board and the terminal plug-in to move to the next step. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0024] Figure 2 It is a structural schematic diagram of an embodiment of the present invention;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the pin bending portion according to an embodiment of the present invention;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the shaft rod and the bent ring plate according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional multi-angle structure of the pin bending portion of an embodiment of the present invention;

[0028] Figure 6 It is a structural schematic diagram of a three-dimensional partial cross-section of a bent ring plate according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of three-dimensional separation of built-in components in an embodiment of the present invention.

[0030] The numbers in the figure represent respectively: 1. plug-in head body; 2. pin bending part; 21. machine base; 22. shaft rod; 23. bending ring plate; 231. guide plate; 232. transition thin plate; 233. bending plate; 2331. built-in hole; 2332. rotating hole; 234. fitting plate; 24. built-in part; 241. support; 2411. adjustment hole; 242. bidirectional threaded rod; 2421. small gear ring; 243. fine-tuning cylinder; 244. connecting frame; 245. large gear. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] Example:

[0034] See also Figure 1-Figure 7 The present invention provides a technical solution: an insertion mechanism suitable for a terminal insertion machine, comprising:

[0035] Insertion head body 1;

[0036] The pin bending part 2 includes a base 21, and the base 21 is connected to a bending ring plate 23 that fits with the external terminal pin by rotating a shaft 22 connected therein. The bending ring plate 23 adopts an open design. In the initial state, the opening end of the bending ring plate 23 faces upward, and the horizontal plane of the port is lower than the bottom end of the external terminal pin;

[0037] The thickness of the bent ring plate 23 gradually becomes thinner along its rotation direction;

[0038] The inside of the bent ring plate 23 is provided with an internal component 24 which can be used to adjust the thickness of the bent ring plate.

[0039] The bending ring plate 23 adopts an integrated molding structure, and the bending ring plate 23 includes a guide plate 231, a transition thin plate 232, a bending plate 233 and a bonding plate 234. The arc-shaped inclined surface of the guide plate 231, the arc-shaped inclined surface of the transition thin plate 232 and the arc-shaped inclined surface of the bending plate 233 are seamlessly connected in sequence, the end face of the guide plate 231 is fixedly connected to the end face of the bonding plate 234, and the inner side of the bending plate 233 is bonded to the outer surface of the bonding plate 234.

[0040] Two bending plates 233 are provided and symmetrically distributed on the outer surface of the bonding plate 234. The built-in component 24 is located in the cavity surrounded by adjacent bending plates 233. The interior of the bending plate 233 is respectively provided with a built-in hole 2331 and a rotation hole 2332.

[0041] The built-in component 24 includes a support 241 , the support leg of the support 241 is fixedly connected to the outer surface of the bonding plate 234 , the support 241 is internally rotatably connected to a bidirectional threaded rod 242 , and the outer end of the bidirectional threaded rod 242 is threadedly connected to a fine-tuning cylinder 243 .

[0042] Two fine-tuning cylinders 243 are provided and are symmetrically distributed with the bidirectional threaded rod 242 as the center. The fine-tuning cylinder 243 is located in the built-in hole 2331, and the diameter of the fine-tuning cylinder 243 is smaller than the inner diameter of the built-in hole 2331. The circumferential outer surface of the fine-tuning cylinder 243 is rotatably connected to the inner wall of the rotating hole 2332 through a rotating rod.

[0043] An adjustment hole 2411 is provided on the circumferential outer surface of the support 241, and a connecting frame 244 is fixedly connected to the side of the support 241 close to the adjustment hole 2411, and the internal rotation of the connecting frame 244 is connected to a large gear 245, and the circumferential outer surface of the bidirectional threaded rod 242 is sleeved with a small gear ring 2421 meshing with the large gear 245, and the end face of the large gear 245 is fixedly connected to a hexagonal rod, and the internal thread of the connecting frame 244 is connected to a positioning rod that fits tightly with the large gear 245.

[0044] The inner side of the bending plate 233 adopts a magnetic design, and the inner side of the bending plate 233 is magnetically connected to the outer surface of the bonding plate 234, thereby improving the stability of the bending plate 233 and avoiding "centrifugal vibration" during the rotation of the bending plate 233.

[0045] refer to Figure 1-Figure 7 Some terminals are designed with special bending areas. After these terminals are inserted into the PCB, their pins need to be bent to the specified position to prevent the terminals from falling off or to ensure the stability of the electrical connection, and to prevent the terminals from falling off due to external force before welding. Usually, a special bending tool or machine is used to complete this step after the terminal is inserted to ensure the consistency and accuracy of the bending. Since the terminal plug-in is inserted into the printed circuit board very quickly, the efficiency of conventional bending tools or machines is that after each pin bending, the plug-in head needs to wait for it to reset to avoid interfering with the printed circuit board and the next movement of the terminal plug-in, resulting in low overall processing efficiency.

[0046] In order to overcome the above-mentioned defects, the present invention designs an insertion mechanism suitable for a terminal insertion machine.

[0047] Pin bending process:

[0048] First, load the PCB board that needs to be plugged into the working area of ​​the plug-in machine. Then, call out the program corresponding to the PCB board from the computer and open it. Use the plug-in head body 1 to load the components that need to be plugged into the designated socket area of ​​the PCB board. At this time, the pin bending part 2 is just below the designated socket area. During each plug-in process, the PCB board moves according to the set program, and the position of the pin bending part 2 remains constant. In the initial state, the opening end of the bending ring plate 23 on the pin bending part 2 faces upward. Under the action of gravity, the bending ring plate 23 can automatically keep the opening facing upward, and the horizontal plane of the port is lower than the bottom of the external terminal pin, so during the movement of the PCB board and the terminal plug-in, the pin bending part 2 will not affect them.

[0049] Traditionally, the terminal bending pins are usually completed using a special bending tool or machine after the terminal is inserted (the operation is complicated and requires multiple steps to complete, and the cost is high). At this time, the bending tool or machine needs to wait for it, and then, after bending, the pin has a certain elastic recovery ability, and the pin fits tightly with the bending tool or machine. If it is moved directly, it will cause the terminal plug-in piece to shift, and it is necessary to wait for the bending tool or machine to reset. In contrast, in the present invention, when the plug-in head body 1 grabs the terminal plug-in and inserts it into the designated socket area of ​​the PCB board, at the same time, the external driving unit starts to drive the bending ring plate 23 to rotate counterclockwise as a whole through the shaft 22, and the guide plate 231 rotates into between adjacent pins (the two have not yet contacted each other). As the bending ring plate 23 continues to rotate, the guide plate 231 begins to transition to the bending plate 233 (the thickness of the bending ring plate 23 along its rotation direction becomes thinner successively), the distance between the arc-shaped inclined surfaces of the two bending plates 233 is greater than the distance between the arc-shaped inclined surfaces of the guide plate 231, and the bending plate 233 begins to contact the pins and begins to spread the two pins outward (at this time, the plug-in head body 1 has just completed the terminal plug-in and pressed down on the top of the terminal plug-in, and the plug-in process and the bending process are carried out simultaneously), completing the bending action.

[0050] The bending operation of the pin bending portion 2 has the following functions:

[0051] Function 1: The bending ring plate 23 can be quickly and automatically reset under the action of its own gravity in the initial state or after bending, so as to prevent the end of the bending ring plate 23 from interfering with the further movement of the subsequent PCB board and pins.

[0052] Function 2: When traditional bending tools or machines bend pins, since the pins are small, very high grasping accuracy is required, which is costly. In contrast, in the present invention, when the bending ring plate 23 rotates, the guide plate 231 preferentially enters between adjacent pins to guide the subsequent bending plate 233 to bend them, which greatly reduces the grasping accuracy. At the same time, during the bending process of the bending plate 233, the two pins are always subjected to balanced force, further improving the processing accuracy.

[0053] Function three: The bending speed is fast. By completing one rotation cycle of the bending ring plate 23, the pin can be quickly bent.

[0054] Function 4: Pin bending and plug-in are carried out simultaneously. When the bending plate 233 starts to contact the pin and starts to push the two pins outward, at this time, the plug-in head body 1 has just completed the terminal plug-in and pressed down on the top of the terminal plug-in. The plug-in process and the bending process are carried out simultaneously to complete the bending operation.

[0055] Function 5: The bending angle of the pin depends on the maximum distance between adjacent bending plates 233. The pin is considered to be bent only when the adjacent bending plates 233 are completely separated from the pin. At this time, the bending plate 233 has completed a cycle of rotation (simple operation and fast speed). The plug-in head body 1 does not need to wait for its reset, and can quickly drive the PCB board and the terminal plug-in to move to the next step.

[0056] Built-in 24 adjustment:

[0057] Since the bending angle of the pin depends on the maximum spacing between adjacent bending plates 233, the present invention is further provided with an internal component 24, which can adjust the distance between adjacent bending plates 233. Specifically, since the bending ring plate 23 adopts an integrated molding structure, the arc-shaped inclined surface of the guide plate 231, the arc-shaped inclined surface of the transition thin plate 232 and the arc-shaped inclined surface of the bending plate 233 are seamlessly connected in sequence, so during the bending process, the pin "relatively slides" smoothly on the smooth arc-shaped inclined surfaces of the guide plate 231, the transition thin plate 232 and the bending plate 233. First, rotate and loosen the positioning rod connected to the internal thread of the connecting frame 244, and then use a screwdriver to rotate the hexagonal rod fixedly connected to the end face of the large gear 245 to drive the large gear 245 to rotate at a small angle. The large gear 245 drives the small gear ring 2421 and the two-way threaded rod 242 to rotate synchronously. Since there are two fine-tuning cylinders 243 and they are symmetrically distributed with the two-way threaded rod 242 as the center, the distance between the two fine-tuning cylinders 243 increases or decreases during the rotation of the two-way threaded rod 242. In conjunction with the transition thin plate 232, the distance between the top ends of adjacent bending plates 233 can be changed, thereby changing the maximum thickness of the bending ring plate 23 to meet different bending angle requirements. It is worth noting that, since the bottom end of the bending plate 233 is connected to the outer end of the transition thin plate 232, when the distance between the top ends of adjacent bending plates 233 changes, the top ends of the bending plates 233 do not slide completely horizontally, so the circumferential outer surface of the fine-tuning cylinder 243 rotates through the rotating rod and the inner wall of the rotating hole 2332 to offset the incomplete horizontal sliding deviation of the top ends of the bending plates 233. During the subsequent rotation process, the support 241 can not only pull the small tooth ring 2421, the two-way threaded rod 242, and the fine-tuning cylinder 243 to prevent the bending plate 233 from centrifugal vibration, but also support the small tooth ring 2421, the two-way threaded rod 242, and the fine-tuning cylinder 243 to prevent horizontal movement and improve the bending accuracy of the two bending plates 233.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An insertion mechanism suitable for a terminal insertion machine, characterized in that: include: Insertion head body (1); A pin bending portion (2), the pin bending portion (2) comprising a machine base (21), the machine base (21) being connected to a bending ring plate (23) that fits with the external terminal pin by rotating a shaft (22) connected thereto, the bending ring plate (23) being designed to be open, and in an initial state, the opening end of the bending ring plate (23) faces upward, and the horizontal plane of the port is lower than the bottom end of the external terminal pin; Wherein, the thickness of the bent ring plate (23) gradually becomes thinner along its rotation direction; Wherein, the interior of the bent ring plate (23) is provided with an internal component (24) which can be used to adjust the thickness of the bent ring plate.

2. The plug-in mechanism suitable for a terminal plug-in machine according to claim 1, characterized in that: The bending ring plate (23) adopts an integrated molding structure, and the bending ring plate (23) comprises a guide plate (231), a transition thin plate (232), a bending plate (233) and a bonding plate (234); the arc-shaped inclined surface of the guide plate (231), the arc-shaped inclined surface of the transition thin plate (232) and the arc-shaped inclined surface of the bending plate (233) are seamlessly connected in sequence; the end surface of the guide plate (231) is fixedly connected to the end surface of the bonding plate (234); and the inner side of the bending plate (233) is bonded to the outer surface of the bonding plate (234).

3. The plug-in mechanism suitable for a terminal plug-in machine according to claim 2, characterized in that: The bending plates (233) are provided with two and are symmetrically distributed on the outer surface of the bonding plate (234); the built-in component (24) is located in a cavity surrounded by adjacent bending plates (233); and the interior of the bending plates (233) is respectively provided with a built-in hole (2331) and a rotation hole (2332).

4. The plug-in mechanism suitable for a terminal plug-in machine according to claim 3, characterized in that: The built-in component (24) comprises a support (241), the support leg of the support (241) is fixedly connected to the outer surface of the bonding plate (234), the interior of the support (241) is rotatably connected to a bidirectional threaded rod (242), and the outer end of the bidirectional threaded rod (242) is threadedly connected to a fine-tuning cylinder (243).

5. The plug-in mechanism suitable for a terminal plug-in machine according to claim 4, characterized in that: The fine-tuning cylinders (243) are provided with two and are symmetrically distributed with the bidirectional threaded rod (242) as the center. The fine-tuning cylinders (243) are located in the built-in hole (2331), and the diameter of the fine-tuning cylinder (243) is smaller than the inner diameter of the built-in hole (2331). The circumferential outer surface of the fine-tuning cylinder (243) is rotatably connected to the inner wall of the rotating hole (2332) via a rotating rod.

6. The plug-in mechanism suitable for a terminal plug-in machine according to claim 4, characterized in that: The support (241) is provided with an adjustment hole (2411) on its circumferential outer surface, a coupling frame (244) is fixedly connected to one side of the support (241) close to the adjustment hole (2411), and a large gear (245) is rotatably connected to the interior of the coupling frame (244), a small gear ring (2421) meshingly connected to the large gear (245) is sleeved on the circumferential outer surface of the bidirectional threaded rod (242), a hexagonal rod is fixedly connected to the end face of the large gear (245), and a positioning rod tightly fitted to the large gear (245) is internally threadedly connected to the coupling frame (244).

7. The plug-in mechanism suitable for a terminal plug-in machine according to claim 2, characterized in that: The inner side of the bending plate (233) adopts a magnetic design, and the inner side of the bending plate (233) is magnetically connected to the outer surface of the bonding plate (234).

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