An automated assembly apparatus for a connector terminal

Abstract

The application discloses a kind of connector terminal automatic assembly equipment, it is related to connector terminal assembly equipment field, positioning sheet moving platform surface is fixedly connected with fixed sheet, and parallel to the fixed sheet sliding connection has the moving sheet for transverse clamping rubber core, the opposite side of fixed sheet and moving sheet is provided with second sliding groove, second sliding groove is slidably connected with the longitudinal positioning block for pressing rubber core, linear feeding guide rail is provided with vertical positioning table for vertical pressing rubber core above the position where rubber core is clamped, extension plate is slidably connected to lifting platform, and the coherent track for guiding PIN needle is arranged on lifting platform and extension plate, and extension plate will be close to rubber core before PIN needle is pushed.The present application forms stable position in three directions of horizontal, longitudinal and vertical to rubber core, so that rubber core keeps position fixed in the whole process of being inserted by PIN needle, effectively avoids that rubber core is deviated or shifts due to PIN needle axial thrust, and guarantees the coaxiality of PIN needle and rubber core needle hole.

Description

Technical Field

[0001] This invention relates to the field of connector terminal assembly equipment, specifically to an automated assembly equipment for connector terminals. Background Technology

[0002] Connectors are key basic components for achieving electrical connections in electronic devices. They are widely used in consumer electronics, automotive electronics, communication equipment, and industrial control. Connectors are usually assembled from metal terminals (PINs) and insulating cores. The pre-assembly of PINs and cores is the core process in the automated production of connectors. Its assembly quality directly affects the conductivity, contact reliability, and yield of the connector.

[0003] Existing PIN and core pre-assembly mechanisms generally include a feeding track, a pusher mechanism, and a core positioning structure. During operation, the core feeding mechanism transports the core along a linear feeding guide to the pre-assembly station, and the pusher mechanism pushes the PIN into the core's pinhole along the track. However, existing pre-assembly mechanisms have the following shortcomings in practical use: First, the three-dimensional positioning of the core is inaccurate and unreliable. Existing mechanisms typically only provide simple directional or two-directional positioning of the core, making it difficult to simultaneously achieve stable clamping in the lateral, longitudinal, and vertical directions. Second, during the insertion of the PIN into the core, the PIN applies a large axial thrust to the core, which can easily cause the core to shift or move under this thrust, leading to... The PIN pin and the core pin hole are not coaxial, which leads to defects such as misalignment, crooked insertion, and incomplete connection. In severe cases, it can even cause the PIN pin to bend or the core to crack. Secondly, the PIN pin lacks effective guiding constraints in the initial stage of insertion. There is a suspended distance between the PIN pin and the core pin hole entrance. In this area, the PIN pin is free from the constraints of the track side wall. When the tip of the PIN pin just touches the core surface or the pin hole entrance, if it is subjected to slight lateral resistance, the PIN pin is very likely to bend and deform in this unconstrained area (i.e., the kneeling phenomenon). The thinner the PIN pin, the more prominent this problem is, which leads to the scrapping of the PIN pin, the decline in pre-assembly quality, and affects the subsequent riveting process and the finished product qualification rate.

[0004] Therefore, it is necessary to improve the existing PIN pin and core pre-assembly mechanism to enhance the accuracy of the core's three-way positioning and the guiding stability of the PIN pin throughout the insertion process. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide an automated assembly device for connector terminals to solve the technical problem of instability in the pre-assembly process of PIN pins and glue cores in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automated assembly equipment for connector terminals, comprising a PIN pin orientation mechanism for conveying PIN pins to a lifting platform, a linear feeding guide for intermittently conveying a core for PIN pin insertion, a longitudinally movable positioning plate stage, a fixed plate fixedly connected to the surface of the positioning plate stage, and a movable plate for laterally clamping the core slidably connected parallel to the fixed plate, both the fixed plate and the movable plate having a second groove on their opposing sides, a longitudinal positioning block for pressing the core slidably connected within the second groove, a vertical positioning stage for vertically pressing the core being clamped above the position of the core on the linear feeding guide, and an extension plate slidably connected to the lifting platform, both the lifting platform and the extension plate having a continuous track for guiding the PIN pins, the extension plate approaching the core before the PIN pin is pushed.

[0007] By adopting the above technical solution, the core is stably positioned in three directions: horizontal, vertical, and longitudinal. This ensures that the core remains in a fixed position throughout the entire process of being inserted by the pin, effectively preventing the core from shifting or moving due to the axial thrust of the pin. It also ensures the coaxiality of the pin and the core pin hole, significantly improving the accuracy and yield of pre-assembly.

[0008] The invention is further configured such that a push plate is slidably connected to the top surface of the lifting platform, and the bottom surface of the push plate is provided with a protrusion for pushing the PIN pins in the corresponding sliding rails. A vertical telescopic rod for pushing the lifting platform up and down is installed at the bottom end of the lifting platform, and a first longitudinal telescopic rod for pushing the push plate to move is provided at the end of the push plate away from the linear feeding guide rail.

[0009] Preferably, the protrusions on the bottom surface of the push plate correspond one-to-one with each PIN needle track, and the front end face of the protrusions fits into the plane of the PIN needle tail, so that the PIN needle is subjected to uniform force and does not wobble. The first longitudinal telescopic rod adopts a cylinder or servo electric cylinder to drive the push plate to complete the pushing of the PIN needle. The vertical telescopic rod drives the lifting platform to switch between the low material receiving position and the high pre-assembly position. In the high position, the PIN needle track is coaxial with the core needle hole.

[0010] The present invention is further configured such that the lifting platform is provided with a first sliding groove for the extension plate to slide, the first sliding groove also restricts the sliding stroke of the extension plate, the top surface of the extension plate is fixedly connected with a boss, and the push plate is provided with a spring telescopic rod connected to the boss.

[0011] Preferably, the first groove is a T-shaped groove or a dovetail groove, and its two ends form limiting surfaces that restrict the extension plate to its extreme positions of extension and retraction; the spring telescopic rod includes a sleeve, a push rod and a spring, and the push rod extends normally under the action of the spring and abuts against the boss; when the push plate moves forward, the push rod first pushes the extension plate to extend, and after the extension plate is in place, the push rod is compressed, and the push plate continues to push the PIN pin.

[0012] The present invention is further configured such that the length of the extension plate is less than the length of the PIN pin, and the PIN pin inserted into the core will not interfere with the downward reset movement of the extension plate and the lifting platform.

[0013] Preferably, the length of the extension plate is 1 / 2 to 2 / 3 of the length of the PIN pin, and after it extends, there is a gap of 0.5mm to 1.5mm between its front end and the core. After the PIN pin is inserted into the core, its tail remains in the lifting platform track. When the lifting platform descends, the extension plate comes out from the tail of the PIN pin and does not interfere with the PIN pin that has been inserted into the core.

[0014] The present invention is further configured such that one end of the positioning plate moving stage is connected to a second longitudinal telescopic rod for pushing itself to move longitudinally. When the second longitudinal telescopic rod is not extended, the fixed plate and the moving plate will not interfere with the movement of the rubber core in the linear feeding guide rail.

[0015] Preferably, the second longitudinal telescopic rod is made of a pneumatic cylinder or an electric cylinder. When it retracts, the positioning plate moves to the safe position, and the fixed plate and the moving plate are located outside the rubber core slide groove, so as not to interfere with the feeding of the rubber core. When it extends, the positioning plate moves to the working position, and the longitudinal positioning block pushes the rubber core to the positioning position. At the same time, the top surface of the rubber core enters the lower part of the vertical positioning table and is pressed.

[0016] The present invention is further configured such that the front ends of both the fixed piece and the movable piece are provided with a second sliding groove, and a compression spring is provided in the second sliding groove. One end of the compression spring contacts the inner wall of the second sliding groove, and the other end contacts the longitudinal positioning block.

[0017] Preferably, the longitudinal positioning block extends out of the second slide groove under the action of the compression spring, and its extended end is a plane that fits against the back of the core; the elastic force of the compression spring is greater than the axial thrust force on the core when the PIN is inserted, ensuring that the core does not move backward; the opening of the second slide groove is provided with a limiting step to prevent the longitudinal positioning block from popping out completely.

[0018] The present invention is further configured such that the linear feeding guide rail is provided with a core groove adapted to the shape of the core, and the core groove is used for intermittent feeding of the core along a direction perpendicular to the insertion of the PIN pin.

[0019] Preferably, the rubber core slide groove is fitted with the rubber core with a clearance of 0.05mm to 0.15mm on one side, so that the upper part of the rubber core is exposed for clamping and vertical positioning; the linear feeding guide is driven by stepper or servo intermittently, feeding in one rubber core position at a time.

[0020] The present invention is further configured to include a core feeding mechanism, which is disposed at the feed end of the linear feeding guide and is used to push the cores one by one into the core groove.

[0021] Preferably, the core feeding mechanism includes a vibratory plate and a linear vibratory feeder. The discharge end of the linear vibratory feeder is equipped with a distributing cylinder, which releases only one core at a time. A connecting block with a guide groove is provided between the core feeding mechanism and the linear feeding guide rail to ensure that the core enters the core chute smoothly.

[0022] The present invention is further configured such that a transverse telescopic rod is provided on the positioning plate moving platform, and the output end of the transverse telescopic rod is connected to the moving plate, which is used to drive the moving plate to move closer to or away from the fixed plate, so as to laterally clamp or loosen the rubber core.

[0023] Preferably, the lateral telescopic rod is made of a thin cylinder or a slide cylinder, and a lateral linear guide rail is provided between the moving plate and the positioning plate. The clamping surfaces of the moving plate and the fixed plate are adapted to the shape of the side of the rubber core, and flexible pads are provided on the clamping surfaces. The clamping force is adjustable to avoid damaging the rubber core.

[0024] The present invention is further configured such that, before the movable piece is close to the material feeding direction of the rubber core, the width between the movable piece and the fixed piece is greater than the width of the rubber core.

[0025] Preferably, the distance between the movable piece and the fixed piece before clamping is 0.5mm to 2mm larger than the width of the rubber core, and the material receiving end of the movable piece is provided with a guide slope; when clamping, the movable piece first pushes the rubber core close to the positioning surface of the fixed piece, and then clamps it with a set force, so that the rubber core is positioned with the fixed piece as the lateral reference each time.

[0026] In summary, the present invention has the following main beneficial effects: 1. This invention utilizes the cooperation of a fixed plate and a movable plate. The movable plate moves towards the fixed plate and laterally clamps the core. Simultaneously, a compression spring pushes a longitudinal positioning block to press the back of the core within the second groove on the opposite side of the movable and fixed plates, thus securing the core in the core groove for longitudinal positioning. Furthermore, as the core is pushed to the positioning position, a vertical positioning platform closely contacts the top surface of the core for vertical positioning. This provides stable positioning of the core in three directions: lateral, longitudinal, and vertical. This ensures the core remains fixed throughout the PIN insertion process, effectively preventing displacement or movement of the core due to the axial thrust of the PIN. It also guarantees the coaxiality of the PIN and the core's pinhole, significantly improving the accuracy and yield of pre-assembly.

[0027] 2. This invention extends the sliding guide track of the PIN by sliding an extension plate on the original PIN track on the lifting platform surface and using a spring telescopic rod on the push plate. During the insertion of the PIN into the core by the push plate, the extension plate is first driven to extend along the first slide groove to a position close to the core. This extends the sliding guide track of the PIN and eliminates the suspended area without track constraint when the front end of the PIN just contacts the core. This ensures that the PIN is restricted and guided by the track sidewall throughout the entire insertion process, effectively preventing the PIN from bending due to lateral resistance at the moment of contact with the core. This significantly improves the quality and stability of the pre-assembly of fine-diameter PINs.

[0028] 3. This invention utilizes the cooperation between the spring telescopic rod and the boss on the extension plate to allow the push plate to simultaneously extend the extension plate when pushing the PIN needle forward. After the extension plate extends to its position, the spring telescopic rod compresses, and the push plate continues to push the PIN needle through the extension plate to insert into the glue core. After insertion, the spring telescopic rod rebounds to reset the extension plate. The entire extension guiding action is completed synchronously by the push plate's pushing stroke, eliminating the need for an additional independent drive source. The structure is compact, the action is smooth and reliable, and the integration and working efficiency of the equipment are improved.

[0029] 4. The present invention drives the moving piece to clamp laterally, the longitudinal positioning block to press longitudinally, and the vertical positioning table to limit vertical movement by means of a transverse telescopic rod, a first longitudinal telescopic rod, a second longitudinal telescopic rod, and a vertical telescopic rod, respectively. The positioning actions in each direction are independent and controllable, the clamping force is stable, and the stroke can be adjusted to adapt to the positioning requirements of different specifications of rubber cores, which has good versatility and ease of changeover. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the present invention. Figure 3 The PIN needle orientation mechanism of the present invention sends the PIN needle into the lifting platform, with the lifting platform not raised in a perspective view. Figure 4 For the present invention Figure 3 Enlarged view of A in the middle; Figure 5 This is a schematic diagram of the state where, after the lifting platform of the present invention rises to the corresponding hole of the aligned core, the push plate extends to push the PIN pin into the corresponding hole of the core. Figure 6 For the present invention Figure 5 Enlarged view of B in the middle; Figure 7 This is a schematic diagram of the push plate retracting and resetting state after the pre-assembly of the PIN pin and the glue core is completed in this invention; Figure 8 For the present invention Figure 7 Enlarged view of C; Figure 9 This is a schematic diagram of the internal structure of the linear feed guide rail after the PIN pin and the core are pre-assembled and the push plate has retracted and reset. Figure 10 For the present invention Figure 9 Enlarged view of D; Figure 11 This is a schematic diagram showing the linear feeding guide rail of the present invention with its top cover removed. Figure 12 For the present invention Figure 11 Enlarged view of E in the middle; Figure 13 This is a schematic diagram showing the state of the fixed piece and the movable piece clamping the adhesive core according to the present invention; Figure 14 For the present invention Figure 13 Enlarged view of F in the middle.

[0031] Explanation of reference numerals in the attached figures: 1. PIN needle orientation mechanism; 2. Lifting platform; 201. First slide groove; 3. Push plate; 301. Spring telescopic rod; 4. Extension plate; 401. Boss; 5. Vertical positioning platform; 6. Positioning piece moving platform; 7. Fixed piece; 8. Moving piece; 9. Second slide groove; 10. Longitudinal positioning block; 11. Compression spring; 12. Glue core; 13. Vertical telescopic rod; 14. First longitudinal telescopic rod; 15. Second longitudinal telescopic rod; 16. Lateral telescopic rod; 17. Glue core feeding mechanism; 18. PIN needle and glue core pre-assembly mechanism; 19. Linear feeding guide rail; 1901. Glue core slide groove; 20. PIN needle and plastic pre-riveting positioning mechanism; 21. PIN needle and plastic riveting mechanism; 22. PIN needle. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The embodiments of the present invention will now be described.

[0034] First embodiment: An automated assembly device for connector terminals, please refer to... Figures 1-14The device includes a PIN needle orientation mechanism 1, which is used to convey PIN needles 22 to a lifting platform 2. It also includes a linear feeding guide 19, which is used to intermittently convey the core 12 for insertion of the PIN needles 22. After the core 12 completes the pre-assembly of multiple rows of corresponding PIN needles 22 in the vertical direction, it moves along the linear feeding guide 19 to the PIN needle and plastic pre-riveting positioning mechanism 20 to complete the pre-riveting positioning of the PIN needle and plastic. Finally, it moves to the PIN needle and plastic riveting mechanism 21 to complete the riveting work between the product and the plastic, thus completing the automated assembly of the machine terminal. This application does not improve the subsequent process of PIN needle and core pre-assembly, and its specific working principle will not be described here.

[0035] It also includes a longitudinally movable positioning plate shifter 6, on the surface of which a fixed plate 7 is fixedly connected, and a movable plate 8 for laterally clamping the core 12 is slidably connected parallel to the fixed plate 7. The fixed plate 7 and the movable plate 8 are both provided with a second slide groove 9 on their opposing sides. A longitudinal positioning block 10 for pressing the core 12 is slidably connected in the second slide groove 9. A vertical positioning platform 5 for vertically pressing the core 12 is provided above the position where the core 12 is clamped on the linear feeding guide rail 19. It also includes an extension plate 4, which is slidably connected to the lifting platform 2. Both the lifting platform 2 and the extension plate 4 are provided with a continuous track for guiding the PIN pin 22. The extension plate 4 will approach the core 12 before the PIN pin 22 is pushed. The fixed plate 7, the movable plate 8, the longitudinal positioning block 10, the vertical positioning platform 5 and the extension plate 4 constitute the PIN pin and core pre-assembly mechanism 18.

[0036] For details regarding the above embodiments, please refer to [link / reference]. Figures 3-14 A push plate 3 is slidably connected to the top surface of the lifting platform 2. The bottom surface of the push plate 3 is provided with a protrusion for pushing the PIN pins 22, which is embedded in the sliding rail of each PIN pin 22. A vertical telescopic rod 13 for pushing the lifting platform 2 to rise and fall is installed at the bottom end of the lifting platform 2. A first longitudinal telescopic rod 14 for pushing the push plate 3 to move is provided at the end of the push plate 3 away from the linear feeding guide rail 19. The protrusion on the bottom surface of the push plate 3 corresponds to each PIN pin rail. The front end of the protrusion is in contact with the tail plane of the PIN pin 22, so that the PIN pin 22 is evenly stressed and does not wobble. The first longitudinal telescopic rod 14 is a cylinder or servo electric cylinder to drive the push plate 3 to push the PIN pins 22. The vertical telescopic rod 13 drives the lifting platform 2 to switch between the low receiving position and the high pre-assembly position. In the high position, the PIN pin rail is coaxial with the pin hole of the glue core 12.

[0037] Furthermore, the lifting platform 2 is provided with a first slide groove 201 for the extension plate 4 to slide. The first slide groove 201 also limits the sliding stroke of the extension plate 4. A boss 401 is fixedly connected to the top surface of the extension plate 4. The push plate 3 is provided with a spring telescopic rod 301 connected to the boss 401. The first slide groove 201 is a T-shaped groove or a dovetail groove. Its two ends form limiting surfaces that limit the extension plate 4 to the extreme positions of extension and retraction. The spring telescopic rod 301 includes a sleeve, a push rod and a spring. The push rod is normally extended under the action of the spring and abuts against the boss 401. When the push plate 3 moves forward, the push rod first pushes the extension plate 4 to extend. After the extension plate 4 is in place, the push rod is compressed, and the push plate 3 continues to push the PIN pin 22.

[0038] For details regarding the above embodiments, please refer to [link / reference]. Figures 3-14 The length of the extension plate 4 is less than the length of the PIN pin 22. The PIN pin 22 inserted into the core 12 will not interfere with the downward reset movement of the extension plate 4 and the lifting platform 2. The length of the extension plate 4 is 1 / 2 to 2 / 3 of the length of the PIN pin 22. After it extends, there is a gap of 0.5mm to 1.5mm between its front end and the core 12. After the PIN pin 22 is inserted into the core 12, its tail remains in the track of the lifting platform 2. When the lifting platform 2 descends, the extension plate 4 comes out from the tail of the PIN pin 22 and does not interfere with the PIN pin 22 that has been inserted into the core 12.

[0039] Specifically, it also includes a core feeding mechanism 17, which is located at the feed end of the linear feeding guide 19 and is used to push the cores 12 one by one into the core chute 1901. The core feeding mechanism 17 includes a vibrating plate and a linear vibrating feeder. The discharge end of the linear vibrating feeder is equipped with a distributing cylinder, which releases only one core 12 at a time. A connecting block with a guide groove is provided between the core feeding mechanism 17 and the linear feeding guide 19 to ensure that the core 12 enters the core chute 1901 smoothly.

[0040] Second embodiment: An automated assembly device for connector terminals, please refer to... Figures 1-14 Based on the first embodiment, the difference from the first embodiment is that one end of the positioning plate shifting stage 6 is connected to a second longitudinal telescopic rod 15 for pushing itself to move longitudinally. When the second longitudinal telescopic rod 15 is not extended, the fixed plate 7 and the moving plate 8 will not interfere with the movement of the rubber core 12 in the linear feeding guide rail 19. The second longitudinal telescopic rod 15 is a cylinder or electric cylinder. When it retracts, the positioning plate shifting stage 6 moves to the safe position. The fixed plate 7 and the moving plate 8 are located outside the rubber core slide groove 1901 and do not interfere with the feeding of the rubber core 12. When it extends, the positioning plate shifting stage 6 moves to the working position, and the longitudinal positioning block 10 pushes the rubber core 12 to the positioning position. At the same time, the top surface of the rubber core 12 enters below the vertical positioning table 5 and is pressed.

[0041] Specifically, both the fixed plate 7 and the movable plate 8 are provided with a second slide groove 9 at their front ends. A compression spring 11 is provided in the second slide groove 9. One end of the compression spring 11 contacts the inner wall of the second slide groove 9, and the other end contacts the longitudinal positioning block 10. Under the action of the compression spring 11, the longitudinal positioning block 10 extends out of the second slide groove 9. Its extended end is a plane that fits against the back of the core 12. The elastic force of the compression spring 11 is greater than the axial thrust force on the core 12 when the PIN pin 22 is inserted, ensuring that the core 12 does not move backward. The groove opening of the second slide groove 9 is provided with a limiting step to prevent the longitudinal positioning block 10 from popping out completely.

[0042] Furthermore, the linear feed guide 19 is provided with a core groove 1901 that matches the shape of the core 12. The core groove 1901 is used to intermittently feed the core 12 in a direction perpendicular to the insertion of the PIN pin 22. The core groove 1901 and the core 12 are in clearance fit, with a single-sided clearance of 0.05mm to 0.15mm, so that the upper part of the core 12 is exposed for clamping and vertical positioning. The linear feed guide 19 is driven intermittently by stepper or servo, feeding in one core position at a time.

[0043] For details regarding the above embodiments, please refer to [link / reference]. Figures 3-12 A transverse telescopic rod 16 is provided on the positioning plate shifting stage 6. The output end of the transverse telescopic rod 16 is connected to the moving plate 8 and is used to drive the moving plate 8 to move closer to or away from the fixed plate 7 to clamp or release the rubber core 12 laterally. The transverse telescopic rod 16 is a thin cylinder or a slide cylinder. A transverse linear guide rail is provided between the moving plate 8 and the positioning plate shifting stage 6. The clamping surface of the moving plate 8 and the fixed plate 7 is adapted to the side shape of the rubber core 12. A flexible pad is provided on the clamping surface. The clamping force is adjustable to avoid damaging the rubber core 12.

[0044] Furthermore, the moving piece 8 is close to the material feeding direction of the core 12. Before the moving piece 8 and the fixed piece 7 clamp the core 12, the width between the moving piece 8 and the fixed piece 7 is greater than the width of the core 12. The distance between the moving piece 8 and the fixed piece 7 before clamping is 0.5mm to 2mm larger than the width of the core 12. The material feeding end of the moving piece 8 is provided with a guide slope. When clamping, the moving piece 8 first pushes the core 12 close to the positioning surface of the fixed piece 7, and then clamps it with a set force, so that the core 12 is positioned with the fixed piece 7 as the lateral reference each time.

[0045] In practical operation: When the automated assembly equipment for the connector terminals is working, the PIN pin orientation mechanism 1 sorts the bulk PIN pins 22 and transports the PIN pins 22 with the same orientation to the track of the lifting platform 2 in the low receiving position. At the same time, the core feeding mechanism 17 pushes the cores 12 one by one into the core groove 1901 of the linear feeding guide 19. The linear feeding guide 19 feeds intermittently, transporting the cores 12 to the pre-assembly station. At this time, the second longitudinal telescopic rod 15 is in the retracted state, the positioning plate shifting platform 6 is in the safe position, and the fixing plate 7 and the moving plate 8 are moved to the outside of the core groove 1901, without interfering with the feeding movement of the cores 12.

[0046] After the core 12 reaches the pre-assembly station, the second longitudinal telescopic rod 15 extends, driving the positioning plate moving platform 6 to move longitudinally to the working position, so that the fixed plate 7 and the moving plate 8 are respectively located on both sides of the core 12. The transverse telescopic rod 16 drives the moving plate 8 to approach the fixed plate 7 in a direction parallel to the fixed plate 7. The moving plate 8 first pushes the core 12 close to the positioning surface of the fixed plate 7, and then clamps the core 12 laterally. The longitudinal positioning blocks 10 on the fixed plate 7 and the moving plate 8 push the back of the core 12 under the action of the compression spring 11, pushing the core 12 longitudinally to the positioning position. During the process of being pushed to the positioning position, the top surface of the core 12 enters below the vertical positioning platform 5 and comes into close contact with the vertical positioning platform 5, realizing vertical positioning. Thus, the core 12 is fixed in the transverse, longitudinal and vertical directions, ensuring that it does not shift during the insertion of the PIN pin 22.

[0047] After the core 12 is positioned, the vertical telescopic rod 13 drives the lifting platform 2 to rise from the low receiving position to the high pre-assembly position, so that the PIN needle track on the lifting platform 2 is coaxially aligned with the needle hole of the core 12. Then, the first longitudinal telescopic rod 14 drives the push plate 3 to move towards the core 12. The spring telescopic rod 301 on the push plate 3 first abuts against the boss 401 on the extension plate 4 and pushes the extension plate 4 to slide along the first slide groove 201 towards the core 12, so that the front end of the extension plate 4 is close to the core 12, thereby extending the sliding guide track of the PIN needle 22 to the core. Near 12, after the extension plate 4 extends into place, the first slide 201 restricts its continued movement, the spring telescopic rod 301 begins to compress, the push plate 3 continues to move forward, its bottom protrusion is embedded in each PIN needle track and pushes the PIN needle 22 to move along the continuous track on the lifting platform 2 and the extension plate 4. Under the full constraint of the track side wall, the PIN needle 22 passes through the extension plate 4, and its front end directly enters the needle hole of the glue core 12, eliminating the unrestrained suspended section when the front end of the PIN needle 22 just contacts the glue core 12, effectively preventing the PIN needle 22 from bending due to lateral force.

[0048] After the PIN pin 22 is inserted into the core 12, the first longitudinal telescopic rod 14 drives the push plate 3 to retract. During the retraction, the spring telescopic rod 301 drives the extension plate 4 to retract and return to its original position along the first slide groove 201. The transverse telescopic rod 16 drives the moving piece 8 away from the fixed piece 7, releasing the core 12. The second longitudinal telescopic rod 15 retracts, driving the positioning piece moving platform 6 to return to the safe position. The vertical telescopic rod 13 drives the lifting platform 2 to descend and reset. Since the length of the extension plate 4 is less than the length of the PIN pin 22, the tail of the PIN pin 22 after insertion into the core 12 remains in the track of the lifting platform 2. When the lifting platform 2 descends, the extension plate 4 comes out from the tail of the PIN pin 22 and does not interfere with the PIN pin 22 that has been inserted into the core 12. Then the linear feeding guide 19 sends the next core 12 into the pre-assembly station. The above cycle is repeated to realize the continuous automated pre-assembly of the PIN pin 22 and the core 12.

[0049] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An automated assembly device for connector terminals, characterized in that, include: PIN needle orientation mechanism (1), the PIN needle orientation mechanism (1) is used to feed PIN needles (22) to the lifting platform (2); Linear feed guide (19) is used for intermittently feeding the core (12) for insertion of PIN pin (22). The positioning plate shifting platform (6) moves longitudinally. A fixed plate (7) is fixedly connected to the surface of the positioning plate shifting platform (6), and a moving plate (8) for laterally clamping the rubber core (12) is slidably connected parallel to the fixed plate (7). A second sliding groove (9) is provided on the side of the fixed plate (7) and the moving plate (8) facing each other. A longitudinal positioning block (10) for pressing the rubber core (12) is slidably connected in the second sliding groove (9). A vertical positioning platform (5) for vertically pressing the rubber core (12) is provided above the position where the rubber core (12) is clamped on the linear feeding guide rail (19). Extension plate (4) is slidably connected to lifting platform (2). Both lifting platform (2) and extension plate (4) are provided with a continuous track for guiding PIN pin (22). The extension plate (4) will approach the core (12) before the PIN pin (22) is pushed.

2. The automated assembly equipment for connector terminals according to claim 1, characterized in that: The top surface of the lifting platform (2) is slidably connected to a push plate (3). The bottom surface of the push plate (3) is provided with a protrusion for pushing the PIN pins (22) in the sliding rails corresponding to each PIN pin (22). The bottom end of the lifting platform (2) is equipped with a vertical telescopic rod (13) for pushing the lifting platform (2) to rise and fall. The end of the push plate (3) away from the linear feeding guide rail (19) is provided with a first longitudinal telescopic rod (14) for pushing the push plate (3) to move.

3. The automated assembly equipment for connector terminals according to claim 2, characterized in that: The lifting platform (2) is provided with a first slide groove (201) for the extension plate (4) to slide. The first slide groove (201) also restricts the sliding stroke of the extension plate (4). The top surface of the extension plate (4) is fixedly connected with a boss (401). The push plate (3) is provided with a spring telescopic rod (301) connecting the boss (401).

4. The automated assembly equipment for connector terminals according to claim 1, characterized in that: The length of the extension plate (4) is less than the length of the PIN pin (22), and the PIN pin (22) inserted into the core (12) will not interfere with the downward reset movement of the extension plate (4) and the lifting platform (2).

5. The automated assembly equipment for connector terminals according to claim 1, characterized in that: One end of the positioning plate shifter (6) is connected to a second longitudinal telescopic rod (15) for pushing itself to move longitudinally. When the second longitudinal telescopic rod (15) is not extended, the fixed plate (7) and the moving plate (8) will not interfere with the movement of the rubber core (12) in the linear feeding guide rail (19).

6. The automated assembly equipment for connector terminals according to claim 5, characterized in that: The front ends of both the fixed plate (7) and the movable plate (8) are provided with a second slide groove (9). A compression spring (11) is provided in the second slide groove (9). One end of the compression spring (11) contacts the inner wall of the second slide groove (9), and the other end contacts the longitudinal positioning block (10).

7. The automated assembly equipment for connector terminals according to claim 1, characterized in that: The linear feeding guide (19) is provided with a core groove (1901) that is adapted to the shape of the core (12). The core groove (1901) is used to feed the core (12) intermittently in a direction perpendicular to the insertion of the PIN pin (22).

8. The automated assembly equipment for connector terminals according to claim 7, characterized in that: It also includes a core feeding mechanism (17), which is located at the feed end of the linear feeding guide (19) and is used to push the cores (12) one by one into the core chute (1901).

9. The automated assembly equipment for connector terminals according to claim 1, characterized in that: The positioning plate moving platform (6) is provided with a horizontal telescopic rod (16). The output end of the horizontal telescopic rod (16) is connected to the moving plate (8) to drive the moving plate (8) to move closer to or away from the fixed plate (7) so as to clamp or loosen the rubber core (12) laterally.

10. The automated assembly equipment for connector terminals according to claim 6, characterized in that: The moving piece (8) is close to the material feeding direction of the glue core (12). Before the moving piece (8) and the fixed piece (7) clamp the glue core (12), the width between the moving piece (8) and the fixed piece (7) is greater than the width of the glue core (12).

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