Positioning device, assembling equipment and assembling method of wiring terminal

Abstract

The invention discloses a positioning device, an assembling device and an assembling method of a wiring terminal, and is used for positioning and fixing parts in the assembling process of the wiring terminal. The clamp is in sliding connection with the base and is used for clamping and fixing the base; the positioning assembly is used for ensuring that the pin hole of the inner core is aligned with the long-strip hole of the base in the assembling process, so that the pin shaft can smoothly penetrate into the pin hole; the positioning assembly further comprises a positioning block which is connected with the base in a sliding mode and used for being connected with the long-strip-shaped hole so as to limit the circumferential position of the base. The positioning pin is in sliding connection with the base or the positioning block and is used for being inserted into a pin hole of the inner core, so that the direction of the pin hole is kept aligned with the long-strip-shaped hole; the positioning block and the positioning pin can be driven synchronously and can also be driven independently, so that the positioning requirements of different working procedures in the assembling process are met, and the function compatibility and the operation flexibility of the device are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile massage seats, and more particularly to a positioning device for a terminal, an assembling device and an assembling method. BACKGROUND

[0002] The terminal is a basic element widely used in the field of electrical connection, which is usually composed of a base, a conductive inner core, a spring and a pin shaft. In the assembly process of such a terminal, the most critical and difficult process is to accurately pass the pin shaft through the long hole of the base and the pin hole of the inner core. Since the inner core is in a state of being lifted by the spring and freely rotating after being placed in the inner cavity of the base, the pin hole on it is shielded by the base and cannot be directly observed. The operator needs to rely on experience and adjust the circumferential angle of the inner core repeatedly through subtle hand feeling to try to align the hidden pin hole with the visible long hole outside the base. This process has the following significant disadvantages: 1. Low assembly efficiency: completely dependent on manual groping and debugging of the operator, the alignment process is time-consuming and laborious, and it is difficult to achieve rapid and continuous batch production, becoming a bottleneck of the entire production process.

[0003] 2. It is difficult to ensure product qualification rate: the instability of manual operation can easily lead to misalignment. If the pin shaft is forcedly pressed in when the pin hole is not completely aligned, it is easy to cause damage to the pin shaft, inner core or base structure, resulting in defective products.

[0004] 3. Difficult to realize automation: due to the lack of reliable inner core angle positioning method, traditional vibration disc, standard mechanical hand and other automatic feeding and assembling mechanisms cannot be directly applied, which restricts the improvement of the automation and intelligent level of the production line.

[0005] In the prior art, there are also some attempts to assist positioning through special jigs. However, these schemes are often single-functioned, and can usually only solve the clamping or positioning problem in one direction of a fixed single model terminal. At the same time, they are difficult to meet the different requirements of positioning and driving methods at different stages (such as base fixation, inner core angle correction, pin shaft insertion) in the assembly process, and lack of versatility and flexibility. SUMMARY

[0006] The present application aims to provide a positioning device for a terminal, an assembling device and an assembling method to improve the assembly efficiency and qualification rate.

[0007] In order to achieve the above object, in a first aspect, the application provides a terminal positioning device for positioning and fixing parts during the assembly of a terminal, so as to improve the convenience and accuracy of the assembly operation; the terminal comprises a base, an inner core, a spring and a pin shaft, wherein the base is provided with an inner cavity, an elongated hole extending in the axial direction and a first wiring hole; the inner core is provided with a pin hole and a second wiring hole and is assembled in the inner cavity of the base; the spring is arranged in the inner cavity and abuts against the base and the inner core at both ends; the pin shaft is sequentially arranged in the elongated hole of the base and the pin hole of the inner core, so that the inner core and the base are axially slidably connected; the positioning device comprises: a base; a clamp slidably connected with the base and used for clamping and fixing the base; and a positioning assembly used for ensuring that the pin hole of the inner core is aligned with the elongated hole of the base during the assembly process, so that the pin shaft can be smoothly inserted; the positioning assembly further comprises: a positioning block slidably connected with the base and used for engaging with the elongated hole and limiting the circumferential position of the base by limiting the shape and position of the elongated hole; a positioning pin slidably connected with the base or the positioning block and used for being inserted into the pin hole of the inner core after the inner core is placed in the inner cavity of the base, so that the direction of the pin hole is aligned with the elongated hole; wherein the positioning block and the positioning pin can be synchronously driven or independently driven, so as to adapt to the positioning requirements of different processes during the assembly process and enhance the functional compatibility and operation flexibility of the positioning device.

[0008] By adopting the above technical solution, a highly flexible and intelligent positioning system is formed. The synchronous / independent driving mode makes the device perfectly compatible with different stages in the assembly process: for example, the device can be synchronously driven to quickly complete the initial positioning, or independently driven to perform step-by-step fine adjustment in complex working conditions. This dynamic adaptation capability greatly enhances the functional compatibility and process adaptability of the device, laying a core foundation for building a highly flexible automated production line.

[0009] In some embodiments, the positioning block comprises a first positioning part and a second positioning part, the first positioning part is used for limiting the circumferential direction of the base, and the second positioning part is used for limiting the axial direction of the base.

[0010] By adopting the above technical solution, the positioning block with a composite function simultaneously realizes the cooperative constraint of two key degrees of freedom (circumferential direction and axial direction) of the base. This integrated design replaces the traditional positioning task which needs multiple independent elements and driving sources, not only simplifying the mechanical structure, reducing the manufacturing cost and control complexity, but also fundamentally eliminating the cumulative error that may be generated by step-by-step positioning, significantly improving the systematic accuracy and overall efficiency of the positioning.

[0011] In some embodiments, the first positioning part and the second positioning part are fixedly connected or integrally formed to realize synchronous circumferential and axial positioning of the base when the positioning block slides.

[0012] By adopting the above technical solution, two positioning parts are integrated into a rigid motion unit, and synchronous and accurate positioning of two degrees of freedom can be realized by single linear driving. The structure ensures the absolute synchronization of the circumferential angle and the axial position, completely avoids the risk of part displacement or loss of positioning reference caused by time-sharing and step-by-step operation, and thus guarantees the high consistency and reliability of each positioning action.

[0013] In some embodiments, a guide assembly is further included, which comprises a guide pin that can slide relative to the base, and the guide pin is arranged on the two sides of the clamp opposite to the positioning pin.

[0014] By adopting the above technical solution, a balanced positioning force system is constructed to apply force from both sides of the workpiece. The opposite arrangement coarsely positions the inner core through the guide pin, and then accurately positions the inner core through the positioning pin, thereby providing an accurate geometric channel for the smooth passing of the pin shaft in the subsequent process.

[0015] In some embodiments, the positioning assembly further comprises a third positioning part arranged on the base, which is used to resist the elastic force of the spring and axially abut against the inner core to limit the axial position of the inner core.

[0016] By adopting the above technical solution, the pre-tightening force of the spring is actively overcome and utilized. Instead of passively adapting to the floating of the inner core, it actively suppresses and stabilizes it at the preset axial coordinate. On the one hand, this provides a stable and reliable target for the insertion of the positioning pin, and on the other hand, it also prevents the inner core from accidentally popping out due to the spring force in subsequent operations, greatly improving the safety and controllability of the entire assembly process.

[0017] In a second aspect, the application provides a wiring terminal assembly device comprising the wiring terminal positioning device of the first aspect.

[0018] By adopting the above technical solution, the aforementioned modular and high-precision special positioning device is integrated into the assembly device as a core functional unit, realizing the systematic integration of the positioning function and other process modules such as feeding, riveting, etc. This integrated design makes the entire assembly process automated and intelligent, greatly improving the production rhythm and product consistency, while reducing the dependence on the skills of the operators.

[0019] In some embodiments, an inner core feeding device for placing the inner core into the base is further included, which comprises: The clamping assembly is used for clamping the inner core and placing the inner core into the inner cavity of the base; The detection assembly is used for detecting the circumferential position of the inner core before the inner core is placed into the inner cavity of the base. The clamping assembly first adjusts the axial direction of the inner core to be consistent with the axial direction of the base, and then rotates the inner core, stops rotating when the confirmation signal of the detection assembly is received, and is placed into the inner cavity of the base until the direction of the pin hole is aligned with the length direction of the long hole.

[0020] By adopting the above technical solution, the most difficult inner cavity blind alignment problem is converted into an external visual "pre-alignment" operation. By using the detection and rotation mechanism to adjust the inner core to the correct angle in the open space before placing it, the relative angle between the inner core and the base after placing is ensured to be close to the target state from the source. This greatly reduces the workload and correction stroke of the subsequent positioning assembly, and is a key front-end process for improving the efficiency and one-time success rate of the entire system.

[0021] In some embodiments, a riveting device is further included, which includes a riveting head that can slide relative to the base. When the riveting head abuts against the pin shaft to pass the pin shaft through the pin hole, the pin shaft pushes the positioning pin out of the pin hole.

[0022] By adopting the above technical solution, a delicate "functional relay" mechanism is designed. By using the forward power of the assembly part (pin shaft), the positioning tool (positioning pin) that has completed the guiding mission is automatically and accurately ejected from the narrow assembly space. This process does not require additional driving or control, realizes seamless handover and automatic retreat of the tool and the workpiece, simplifies the mechanical structure, avoids space interference, and is the core design of realizing efficient and smooth continuous automation.

[0023] In some embodiments, the pin shaft is limited to slide after being ejected from the pin hole by a set distance to limit the assembly position of the pin shaft.

[0024] By adopting the above technical solution, the final assembly position of the pin shaft is accurately mechanically positioned by the hard stop mechanism. This ensures the consistency of the extension length or the pressing depth of the pin shaft in all products, and is a core measure to control the key dimensions and quality of the products. It effectively avoids the functional failure of the products (such as poor sliding or loose connection) caused by assembly too deep or too shallow, and ensures the reliable performance and uniformity of the final product.

[0025] In a third aspect, the application also relates to a terminal assembly method, which uses the assembly device in the second aspect to assemble the terminal, and the assembly method comprises the following steps: The base is placed into the clamp in a set direction; The inner core is placed into the inner cavity of the base in a set direction, so that the direction of the pin hole is consistent with the direction of the long hole. The inner core is axially and circumferentially positioned; The pin shaft is inserted into the long hole and the pin hole to form an axial sliding connection between the inner core and the base.

[0026] By adopting the above technical solutions, the advantages of innovative devices and equipment are converted into a clear, repeatable, programmable standardized process procedure. The step design of the method is logically rigorous and interlocking, and systematically converts the fuzzy operation relying on manual experience and skills into an accurate and stable industrial production process guaranteed by equipment, thereby achieving a comprehensive leap in product quality, production efficiency and production process controllability as a whole.

[0027] In summary, the present application has at least one of the following beneficial technical effects: 1. High-precision and high-success-rate automatic assembly is achieved: through the cooperation of the positioning block and the positioning pin, and the pre-alignment of the inner core feeding device, the industry bottleneck of hidden pin hole alignment is systematically solved, the assembly process is improved from uncertain operation relying on hand feeling to accurate and repeatable process guaranteed by equipment, and the product qualification rate is significantly improved.

[0028] 2. A highly flexible and efficient production process is constructed: the "synchronous / independent" selectable driving mode of the core positioning element, and the clever connection and automatic cooperation of each functional module (such as material taking, positioning, and riveting) enable the entire assembly equipment to adapt to high-speed and continuous batch production, greatly improving production efficiency and having good process adaptability.

[0029] 3. The reliability and safety of the process are ensured through clever mechanical design: such as the automatic ejection of the positioning pin, the resistance of the third positioning part to the spring force, and the hard limit of the pin shaft assembly, which not only simplifies the structure and control, but also actively prevents common quality problems and safety risks such as jamming, parts flying, and assembly too deep, ensuring the safety of equipment and personnel, and the stability of long-term operation. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0031] Figure 1 It is a structural schematic view of the terminal; Figure 2 It is a structural schematic view of the terminal in an exploded state; Figure 3Structure diagram of the terminal positioning device of the present application; Figure 4 Structure diagram of the positioning tool; Figure 5 Structure diagram of the positioning tool and the terminal positioning state; Figure 6 Structure diagram of the positioning tool in the exploded state; Figure 7 Structure diagram of the guide assembly; Figure 8 Structure diagram of the terminal assembly device; Figure 9 Structure diagram of the base inner core feeding device; Figure 10 Structure diagram of the inner core inner core feeding device; Figure 11 Structure diagram of the riveting device; Figure 12 Structure diagram of the riveting device in the cross-sectional view; Figure 13 Structure diagram of Figure 12 Structure diagram of the enlarged A area in the middle.

[0032] Reference signs: 100, terminal; 11, base; 111, first terminal hole; 112, long hole; 12, inner core; 121, second terminal hole; 122, pin hole; 13, pin shaft; 14, spring; 200, positioning device; 21, positioning tool; 211, base; 212, clamp; 213, third positioning part; 214, positioning block; 2141, positioning pin; 2142, first positioning part; 2143, second positioning part; 2144, sliding groove; 215, fixed plate; 216, sliding shaft; 22, guide assembly; 221, guide pin; 222, air cylinder; 300, base feeding device; 31, base conveying assembly; 32, material limiting assembly; 33, base clamping assembly; 400, spring feeding device; 500, inner core feeding device; 51, inner core conveying assembly; 52, inner core clamping assembly; 600, pin shaft feeding device; 700, riveting device; 71, riveting head; 72, pushing assembly. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] The technical solutions of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0037] Example 1 Please see Figures 3-7 This embodiment provides a terminal block 100 positioning device 200 for positioning and fixing components during the assembly process of the terminal block 100, so as to improve the convenience and accuracy of the assembly operation.

[0038] Please see Figure 1 and Figure 2 The terminal block 100 includes a base 11, an inner core 12, a spring 14, and a pin 13. The base 11 has an inner cavity, an elongated hole 112 extending axially therefrom, and a first wiring hole 111. The inner core 12 has a pin hole 122 and a second wiring hole 121, and is fitted into the inner cavity of the base 11. The spring 14 is placed within the inner cavity, with its two ends abutting against the base 11 and the inner core 12 respectively, providing a restoring elastic force for the inner core 12. The pin 13 passes sequentially through the elongated hole 112 of the base 11 and the pin hole 122 of the inner core 12, sliding within the elongated hole 112, thereby connecting the inner core 12 and the base 11 to form the intended axial sliding connection.

[0039] Press down the inner core 12 to align the first wiring hole 111 and the second wiring hole 121, pass the wire through the first wiring hole 111 and the second wiring hole 121, release the inner core 12, and under the elastic force of the spring 14, the inner core 12 and the base 11 clamp and fix the wire, thus achieving connection.

[0040] See Figure 3The positioning device 200 of the embodiment mainly comprises a positioning tool 21 and a guiding assembly 22, and the terminal 100 is clamped and fixed in the positioning tool 21.

[0041] Please refer to Figures 4-6 The positioning tool 21 comprises a base 211, a clamp 212 and a positioning assembly. The base 211 serves as a mounting base of the positioning assembly and supports the frame. The clamp 212 is in sliding connection with the base 211 through two clamping jaws or the like, and a cavity matching the shape of the base 11 can be formed between the two clamping jaws, for reliably clamping and fixing the base 11 during assembly.

[0042] The positioning assembly is the core of the device, which is used to actively ensure the accurate alignment of the pin hole 122 of the inner core 12 and the long hole 112 of the base 11 during assembly, and to create conditions for the smooth insertion of the pin shaft 13. The positioning assembly comprises a positioning block 214 and a positioning pin 2141.

[0043] The positioning block 214 is provided with a sliding groove 2144, and the base 211 is provided with a sliding shaft 216, which connects the base 211 and the positioning block 214 and can slide in the sliding groove 2144. The positioning block 214 is driven by a first driving source (such as a pneumatic cylinder 222 or an electric cylinder) to slide relative to the base 211. The front end of the positioning block 214 is designed with a specific profile for engaging with the long hole 112 on one side of the base 11. When the positioning block 214 moves forward and is embedded in the long hole 112, the circumferential position of the base 11 is limited, preventing it from rotating in the clamp 212.

[0044] The positioning pin 2141 is used for accurate positioning of the inner core 12. The positioning pin 2141 passes through the positioning block 214 and is in sliding connection with the positioning block 214 (in another embodiment, the positioning pin 2141 can be in sliding connection with the base 211), and is driven by the first driving source or a second driving source. After the inner core 12 is placed in the base 11, the positioning pin 2141 can be controlled to move forward, and the front end thereof is accurately inserted into the pin hole 122 of the inner core 12. This action directly corrects the circumferential angle of the inner core 12, so that the axis direction of the pin hole 122 is aligned with the long hole 112.

[0045] In particular, the positioning block 214 and the positioning pin 2141 can be synchronously driven by a cooperative driving mechanism to achieve rapid preliminary positioning, and can be driven by independent driving sources respectively to adapt to step-by-step fine adjustment under complex working conditions. This flexible driving mode greatly enhances the functional compatibility and operational flexibility of the device, and can adapt to different assembly process rhythms and precision requirements.

[0046] Please refer to Figure 5 and Figure 6Further, the positioning block 214 can be designed as a composite structure comprising a first positioning portion 2142 and a second positioning portion 2143. The first positioning portion 2142 is the aforementioned portion for engaging with the long hole 112 and limiting the circumferential position. The second positioning portion 2143 is a boss fixed to the first positioning portion 2142, which can abut against the end face or a specific step of the base 11 when the positioning block 214 is advanced to position, thereby limiting the axial position of the base 11 at the same time.

[0047] In this embodiment, the first positioning portion 2142 and the second positioning portion 2143 are integrally formed on the positioning block 214. This enables the circumferential and axial positioning of the base 11 to be completed simultaneously in one sliding stroke of the positioning block 214, simplifying the parts and actions, and improving the positioning efficiency and accuracy.

[0048] In addition, the positioning assembly further comprises a third positioning portion 213 arranged on the base 211. The third positioning portion 213 is a stop block fixed to the positioning block 214. Its function is to abut against the inner core 12 from above when the inner core 12 is loaded into the base 11, resisting the elastic force of the spring 14, and stably positioning the inner core 12 at a predetermined axial position, preventing it from loosening or popping out, and providing a stable and reliable target for the subsequent insertion of the positioning pin 2141. In another embodiment, the third positioning portion 213 can be slidingly connected to the base 211 and driven by a third driving source to achieve independent action and meet more operation requirements.

[0049] Please refer to Figure 2 , Figure 3 and Figure 7 , when the inner core 12 is placed in the base 11, there will be a slight deflection in the angle. In order to ensure the accuracy of the position between the inner core 12 and the base 11, the device further comprises a guiding assembly 22. The guiding assembly 22 comprises a guiding pin 221 that can slide relative to the base 211. The guiding pin 221 is arranged on both sides of the clamp 212 opposite the aforementioned positioning pin 2141. When the inner core 12 needs to be press-fitted, the guiding pin 221 is inserted into the pin hole 122 under the drive of the air cylinder 222. The head of the guiding pin 221 is a tapered surface, which can guide the pin hole 122. Subsequently, the positioning pin 2141 moves towards the pin hole 122 and is inserted into the pin hole 122, clamping or guiding the inner core 12 from both sides, ensuring that the pin shaft 13 can smoothly pass through the long hole 112 and the pin hole 122 and be stably positioned, achieving reliable positioning.

[0050] Embodiment Two Please refer to Figure 2 , Figure 5 and Figures 8-13 , this embodiment provides a wiring terminal 100 assembly device, which comprises the wiring terminal 100 positioning device 200 described in embodiment one, thereby having high-precision positioning capability.

[0051] On this basis, the device also integrates a base feeding device 300 for placing the base 11 into the positioning tool 21, a spring feeding device 400 for placing the spring 14 into the base 11, a core feeding device 500 for automatically placing the core 12 into the base 11, a pin shaft feeding device 600 for inserting the pin shaft 13 into the terminal 100, and a riveting device 700 for pressing the pin shaft 13 into the set position.

[0052] Please refer to Figure 9 The base feeding device 300 includes a base conveying assembly 31, a material limiting assembly 32, and a base clamping assembly 33, and also includes a detection assembly (not shown in the figure) for improving the accuracy of placement. The detection assembly is an optoelectronic element. The base conveying assembly 31 sequentially conveys the base 11 to the material limiting assembly 32, which in turn conveys the base 11 one by one to the position of the base clamping assembly 33. The base clamping assembly 33 clamps the base 11 and then rotates. When the detection assembly detects that the direction and position of the base 11 are correct, the base clamping assembly 33 stops rotating and places the base 11 into the positioning tool 21.

[0053] Specifically, the detection assembly identifies the circumferential features of the base 11 through a non-contact detection method to determine whether the direction is correct. In actual application, any of the following implementation methods or combinations can be used: Please refer to Figure 2 Based on the detection scheme of the long slot 112: a set of opposite light-sensing sensors are accurately arranged on the radial sides of the rotation path of the base 11, and the light beam propagation path thereof passes through the ideal rotation track of the base 11. When the base 11 rotates, if the long slot 112 rotates to a specific angle parallel to the light beam, the light beam will be able to penetrate the long slot 112 and be detected by the receiver on the opposite side, thereby generating a characteristic pulse signal. When the control system recognizes this signal, it can determine that the base 11 has rotated to the target angle.

[0054] Based on the detection scheme of the first wiring hole 111: a diffuse reflection light-sensing sensor or a visual sensor is used to align the area where the first wiring hole 111 of the base 11 is located. When the base 11 rotates and the hole or internal reflective surface of the first wiring hole 111 enters the detection field of view of the sensor, the sensor will detect a reflection signal feature different from the solid part. By identifying the change point of this characteristic signal, the control system can accurately determine whether the base 11 has reached the preset circumferential position.

[0055] Please refer to Figure 10The inner core feeding device 500 mainly comprises an inner core conveying assembly 51, an inner core clamping assembly 52 and a detection assembly. The inner core conveying assembly 51 arranges and conveys the inner cores 12 in a unified direction to the clamping assembly station. The clamping assembly is responsible for clamping the inner core 12 from the feeding area and transferring and placing it into the inner cavity of the base 11 through a kind of pneumatic finger or servo-driven clamping jaw. The detection assembly is arranged on the material taking path through a visual camera, an optical fiber sensor or a proximity switch, which is used to detect the circumferential position of the inner core 12 in real time before the inner core 12 is placed into the inner cavity of the base 11, and specifically to identify the orientation of the pin hole 122 thereof. For details, please refer to the base 11 detection assembly principle.

[0056] The working process is as follows: after the clamping assembly clamps the inner core 12, the axial direction of the inner core 12 is first adjusted to keep consistent with the axial direction of the base 11. Then, the clamping assembly (which usually has a rotating function itself) starts to rotate the clamped inner core 12. In this process, the detection assembly continuously monitors the circumferential angle of the inner core 12. When it is detected that the pin hole 122 of the inner core 12 is aligned with the target angle (i.e. consistent with the length direction of the long hole 112 on the base 11), a confirmation signal will be immediately sent. After receiving the signal, the clamping assembly stops rotating and immediately performs the placing action to accurately place the inner core 12 into the inner cavity of the base 11. This "pre-alignment" process greatly improves the alignment success rate of the inner core 12 after being placed once.

[0057] Embodiment Three This embodiment further integrates a riveting device 700 on the basis of the assembly equipment provided in Embodiment Two.

[0058] Please refer to Figures 11-13 The riveting device 700 comprises a riveting head 71 and a pushing assembly 72. The riveting head 71 can be driven by the same driving source through a linkage mechanism, or can be driven by independent driving sources respectively, to realize the riveting of the terminal 100 in the positioning tool 21.

[0059] Please refer to Figure 13 Before the riveting head 71 acts, the pin shaft 13 and the positioning pin 2141 are partially inserted into the inner core 12 to position the two ends of the inner core 12 and reduce the probability of rotation deviation of the inner core 12. After the riveting head 71 acts, the pin shaft 13 is pushed into the inner core 12 while the positioning pin 2141 is pushed out of the inner core 12. The positioning pin 2141 can be provided with a limiting structure to limit the movement distance of the positioning pin 2141. When the positioning pin 2141 retreats to a set distance, the positioning pin 2141 cannot move backward, which synchronously limits the movement of the pin shaft 13, ensures the consistency of the position of the pin shaft 13 in the inner core 12, and simultaneously can rivet the pin shaft 13 together with the riveting head 71, to reduce the risk of the pin shaft 13 coming out.

[0060] The working process is as follows: when the pin shaft 13 needs to be assembled, the riveting head 71 advances to abut against the pin shaft 13 pre-assembled at the end of the inner core 12 and press it in. When the pin shaft 13 passes through the pin hole 122 of the inner core 12 under the driving of the riveting head 71, the pin shaft 13 continues to advance to contact the end of the positioning pin 2141 located on the other side of the pin hole 122. With the riveting head 71 continuing to press, the pin shaft 13 smoothly pushes the positioning pin 2141 that has completed the positioning mission out of the pin hole 122, and then limits and rivets the pin shaft 13.

[0061] This design realizes the automatic exchange and retreat of the tool and the workpiece, does not need an additional driving mechanism to recycle the positioning pin 2141, simplifies the structure, avoids motion interference. In addition, the riveting device 700 or the clamp 212 is provided with a limiting structure (such as a mechanical stopper or position control through a servo motor), so that the pin shaft 13 is limited to continue to slide after being pushed out of the pin hole 122 by a set distance, thereby accurately limiting the final assembly position of the pin shaft 13 and ensuring the consistency of the product.

[0062] Embodiment Four This embodiment relates to a terminal 100 assembly method, which uses any of the assembly equipment in Embodiment Two or Embodiment Three to assemble the terminal 100.

[0063] The assembly method sequentially comprises the following steps: S1: Loading and fixing the base 11 on the base 11. The base 11 is placed in the direction set and fixed in the clamp 212 of the equipment.

[0064] S2: Pre-alignment and placement of the inner core 12. The inner core 12 is clamped by the clamping assembly of the inner core feeding device 500, the direction of the pin hole 122 is detected by the detection assembly, and the clamping assembly is driven to rotate the inner core 12 until it is confirmed that the direction of the pin hole 122 is consistent with the direction of the long hole 112 of the base 11. Then, the aligned inner core 12 is placed in the inner cavity of the base 11 along the axial direction.

[0065] S3: Precise positioning of the inner core 12. The positioning assembly is started. First, the positioning block 214 advances to engage with the long hole 112 of the base 11, completing the final positioning of the base 11 in the circumferential direction (and optionally in the axial direction). At the same time or subsequently, the third positioning part 213 acts to abut against the inner core 12, fixing its axial position against the force of the spring 14. Then, the positioning pin 2141 advances to accurately insert into the pin hole 122 of the inner core 12, completing the final correction of the circumferential angle of the inner core 12. At this point, the axial and circumferential directions of the inner core 12 are reliably positioned.

[0066] S4: pin shaft 13 assembly. Pin shaft 13 is sent to the entrance of long hole 112 of base 11. Subsequently, the riveting head 71 of riveting device 700 advances, and pin shaft 13 is pressed into long hole 112 and the pin hole 122 of the inner core 12 that has been accurately aligned. In this process, the pin shaft 13 pushes the positioning pin 2141 located on the other side of the pin hole 122 out until the pin shaft 13 reaches the preset assembly position and is limited, completing the assembly.

[0067] The principles and implementation manners of the present application are described by using specific examples in the present application. The above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A terminal positioning device for positioning and fixing parts during the assembly of a terminal, so as to improve the convenience and accuracy of the assembly operation; the terminal comprises a base, an inner core, a spring and a pin shaft, wherein the base is provided with an inner cavity, an elongated hole extending in the axial direction and a first wiring hole; the inner core is provided with a pin hole and a second wiring hole and is assembled in the inner cavity of the base; the spring is arranged in the inner cavity and abuts against the base and the inner core at both ends; the pin shaft is sequentially arranged in the elongated hole of the base and the pin hole of the inner core, so that the inner core and the base form an axial sliding connection; characterized in that, The positioning device comprises: a base; a clamp connected to the base in a sliding manner, used for clamping and fixing the base; and a positioning assembly used for ensuring that the pin hole of the inner core is aligned with the long hole of the base during assembly, so that the pin shaft can be smoothly inserted; the positioning assembly further comprises: a positioning block connected to the base in a sliding manner, used for engaging with the long hole and limiting the circumferential position of the base by limiting the shape and position of the long hole; a positioning pin connected to the base or the positioning block in a sliding manner, used for being inserted into the pin hole of the inner core after the inner core is placed into the inner cavity of the base, so that the direction of the pin hole is aligned with the long hole; 2. The positioning device of claim 1, wherein, wherein the positioning block and the positioning pin can be driven synchronously or independently, so as to adapt to the positioning requirements of different processes during assembly and enhance the functional compatibility and operational flexibility of the positioning device.

3. The positioning device of claim 2, wherein, The positioning block comprises a first positioning part and a second positioning part, the first positioning part is used for limiting the circumferential position of the base, and the second positioning part is used for limiting the axial position of the base.

4. The positioning device of claim 1, wherein, The first positioning part and the second positioning part are fixedly connected or integrally formed, so as to synchronously limit the circumferential and axial positions of the base when the positioning block slides.

5. The positioning device according to claim 1 or 2, characterized in that Further comprising a guide assembly, comprising a guide pin which can slide relative to the base, the guide pin is arranged on the two sides of the clamp opposite to the positioning pin.

6. A terminal assembly apparatus, characterized by, The positioning assembly further comprises a third positioning part arranged on the base, used for resisting the elastic force of the spring and axially abutting against the inner core, so as to limit the axial position of the inner core.

7. The assembly apparatus of claim 6, wherein, The terminal positioning device according to any one of claims 1-5. Further comprising an inner core feeding device used for placing the inner core into the base, the inner core feeding device comprises: a clamping assembly used for clamping and placing the inner core into the inner cavity of the base; a detection assembly used for detecting the circumferential position of the inner core before the inner core is placed into the inner cavity of the base; 8. The assembly apparatus of claim 6, wherein, wherein after the clamping assembly clamps the inner core, the axial direction of the inner core is first adjusted to be consistent with the axial direction of the base, then the inner core is rotated, and when the confirmation signal from the detection assembly is received, the rotation is stopped and the inner core is placed into the inner cavity of the base, until the direction of the pin hole is aligned with the length direction of the long hole.

9. The assembly apparatus of claim 8, wherein, Further comprising a riveting device, comprising a riveting head which can slide relative to the base, when the riveting head abuts against the pin shaft to make the pin shaft pass through the pin hole, the pin shaft pushes the positioning pin out of the pin hole.

10. A method of assembling a wiring terminal, characterized by, The pin shaft is limited to slide after being pushed out of the pin hole by a set distance, so as to limit the assembly position of the pin shaft. The terminal is assembled by using the assembly equipment according to any one of claims 6-9, and the assembly method comprises the following steps: placing the base into the clamp in a set direction; placing the inner core into the inner cavity of the base in a set direction, so that the direction of the pin hole is consistent with the direction of the long hole; positioning the inner core in the axial and circumferential directions; inserting the pin shaft into the long hole and the pin hole, so that the inner core and the base are axially and slidably connected.

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