Electric vehicle cable head and terminal pressing device

Abstract

The utility model discloses an electric vehicle cable head and terminal pressing device which comprises a workbench and a feeding table, a vertical plate is installed in the middle of one side of the top of the workbench, a hydraulic telescopic rod is installed on the top of the inner side of the vertical plate through a top plate, and the output end of the hydraulic telescopic rod extends to the position below the top plate and is provided with a movable column. A vertical pressure head is mounted at the bottom of the movable column; a feeding table is arranged at the top of the workbench below the vertical pressing head, telescopic air cylinders are installed at the tops of the workbench on the two sides of the feeding table through supporting plates, and the output ends of the two telescopic air cylinders extend to the inner sides of the supporting plates and are provided with horizontal pre-pressing heads. According to the utility model, a horizontal and vertical double-shaft crimping mechanism is adopted, and a cross crimping path is simulated. The lugs on the two sides of the terminal are pre-pressed through the horizontal shaft, and then the main pressing of the central part is completed through the vertical shaft. The crimping mode enables the terminal and the cable conductor to form a three-dimensional mesh occlusion structure, and the crimping stability and reliability are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of cable head and terminal crimping technology, specifically to a device for crimping electric vehicle cable heads and terminals. Background Technology

[0002] In the production of wiring harnesses for new energy electric vehicles, the crimping quality of cable heads and terminals directly affects the stability and safety of the entire vehicle's electrical system. This is especially true for high-voltage, high-current scenarios (such as battery wiring harnesses and motor wiring harnesses), where crimping reliability requirements are extremely high. Traditional cable terminal crimping devices generally suffer from the following technical bottlenecks:

[0003] Existing devices mostly employ a uniaxial vertical crimping method, concentrating the crimping force on the top of the terminal. This results in insufficient contact between the terminal lugs and the cable conductor, easily forming "point contact" rather than "surface contact." Under this crimping method, the interlocking structure between the terminal and the cable is two-dimensional and planar, with weak vibration resistance. After prolonged use, vehicle vibrations may cause loosening of the contact, leading to short circuits or open circuits. Traditional crimping processes typically use a "one-time stamping" mode, where the pressure head directly applies full pressure to the terminal, causing a sudden increase in localized stress. For materials with low hardness, such as aluminum terminals or tin-plated copper terminals, crimping deformation, cracking, or plating peeling are prone to occur, affecting conductivity. Utility Model Content

[0004] The purpose of this invention is to provide a clamping device for electric vehicle cable heads and terminals to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for clamping electric vehicle cable heads and terminals, including a workbench and a feeding table. A vertical plate is installed at the middle position on one side of the top of the workbench. A hydraulic telescopic rod is installed on the top of the inner side of the vertical plate through a top plate. The output end of the hydraulic telescopic rod extends to the bottom of the top plate and is equipped with a movable column. A vertical pressure head is installed at the bottom of the movable column.

[0006] A feeding platform is provided on the top of the workbench below the vertical pressure head, and a servo motor is installed at the bottom of the outer side of the vertical plate. The output end of the servo motor extends into the recessed groove inside the feeding platform and is equipped with a lead screw. A bearing plate is installed on the lead screw through a support block, and a terminal slot and a wire slot are provided on the top of the bearing plate.

[0007] The top of the worktables on both sides of the feeding platform is equipped with telescopic cylinders via support plates. The output ends of the two telescopic cylinders extend to the inside of the support plates and are equipped with horizontal pre-pressure heads.

[0008] Preferably, a collar is provided on the vertical plate on the outer side of the movable column, and a connecting plate is provided at one end of the movable column. A stabilizing rod is installed at one end of the connecting plate, and the top end of the stabilizing rod is inserted into the guide hole provided at one end of the top plate.

[0009] Preferably, the vertical pressure head includes a connecting seat connected to the bottom end of the movable column, an inner pressure head is provided at the bottom of the connecting seat, and an outer pressure head is provided on the outside of the inner pressure head, with a spring connecting the outer pressure head and the inner pressure head.

[0010] Preferably, the inner diameter of the external pressure head is larger than the outer diameter of the internal pressure head.

[0011] Preferably, one end of the horizontal preload head is provided with stepped blade one, stepped blade two and stepped blade three in sequence, and stepped blade one, stepped blade two and stepped blade three are connected by a ramp.

[0012] Preferably, the diameters of the stepped blade one, stepped blade two, and stepped blade three are in an increasing order.

[0013] Preferably, a controller is installed on the top of the workbench at one end of the feeding platform.

[0014] This utility model relates to a clamping device for electric vehicle cable heads and terminals, which has significant technical advantages and positive effects compared with the prior art, as detailed below:

[0015] 1. This device employs a horizontal and vertical dual-axis crimping mechanism, simulating a "cross-shaped" crimping path. First, the horizontal axis pre-presses the lugs on both sides of the terminal, then the vertical axis completes the main crimping of the center. This crimping method allows the terminal and cable conductor to form a three-dimensional mesh-like interlocking structure, significantly improving the stability and reliability of the crimping. Compared to the single-direction crimping method in existing technologies, this invention can distribute the crimping force more evenly, effectively avoiding poor contact or loosening problems caused by uneven crimping.

[0016] 2. The horizontal pre-pressing head adopts a progressive stepped blade design. Pre-positioning is achieved sequentially using stepped blade one and step two, followed by final shaping using stepped blade three. This progressive pressing process not only allows for gradual adjustment and optimization of the pressing position but also effectively reduces stress concentration during the pressing process, preventing terminal deformation and cracking. Compared to the direct pressing method in existing technologies, this invention significantly improves pressing quality and terminal lifespan.

[0017] 3. The vertical pressure head is designed with a combination of inner and outer pressure heads. When the outer pressure head contacts the terminal, the inner pressure head continuously compresses, using the spring compression force to absorb the impact force during crimping. When the spring is fully compressed, the inner pressure head drives the outer pressure head to complete the clamping. This design effectively buffers the instantaneous stress during the crimping process, avoiding deformation and cracking of the terminal due to stress concentration, further improving the stability and safety of crimping.

[0018] In summary, this device significantly improves crimping efficiency and product quality through optimized crimping process and structural design. The biaxial crimping and progressive stepped blade design make the crimping process more precise and efficient, reducing rework and scrap rates, and increasing production efficiency. Simultaneously, the buffer mechanism combining internal and external crimping heads ensures crimping quality, extends the service life of terminals and cables, and reduces maintenance costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a side view of the structure of this utility model;

[0021] Figure 3 This is a top view of the feeding platform structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the vertical pressure head structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the horizontal preload head structure of this utility model;

[0024] In the diagram: 1. Workbench; 2. Telescopic cylinder; 3. Support plate; 4. Horizontal preload head; 5. Connecting plate; 6. Stabilizer bar; 7. Guide hole; 8. Hydraulic telescopic rod; 9. Vertical plate; 10. Top plate; 11. Collar; 12. Movable column; 13. Vertical pressure head; 14. Support block; 15. Feeding table; 16. Controller; 17. Bearing plate; 18. Servo motor; 19. Terminal slot; 20. Wire slot; 21. Lead screw; 22. Sinking groove; 23. Connecting seat; 24. Inner pressure head; 25. Spring; 26. Outer pressure head; 27. Stepped blade one; 28. Stepped blade two; 29. ​​Stepped blade three. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Please see Figure 1-5An embodiment of this utility model provides an electric vehicle cable head and terminal clamping device, including a workbench 1 and a feeding table 15. A vertical plate 9 is installed at the middle position of one side of the top of the workbench 1. A hydraulic telescopic rod 8 is installed on the top of the inner side of the vertical plate 9 through a top plate 10. The output end of the hydraulic telescopic rod 8 extends to the bottom of the top plate 10 and is equipped with a movable column 12. A collar 11 is provided on the vertical plate 9 outside the movable column 12. A connecting plate 5 is provided at one end of the movable column 12. A stabilizing rod 6 is installed at one end of the connecting plate 5. The top end of the stabilizing rod 6 is inserted into the inner side of the guide hole 7 provided at one end of the top plate 10.

[0027] Workbench 1: Workbench 1 is the foundation of the entire device, with a vertical plate 9 installed in the middle of one side of its top. High-strength steel can be selected as the material for workbench 1 to ensure the stability and durability of the device.

[0028] Vertical plate 9: Vertical plate 9 is vertically fixed to the top of workbench 1, and a hydraulic telescopic rod 8 is installed on its inner top via top plate 10. The height and thickness of vertical plate 9 should be designed according to actual usage requirements to ensure sufficient support.

[0029] Top plate 10: The top plate 10 is horizontally installed on the top inner side of the vertical plate 9 and is used to fix one end of the hydraulic telescopic rod 8. One end of the top plate 10 is provided with a guide hole 7 for the insertion of the stabilizer rod 6.

[0030] Hydraulic telescopic rod 8: One end of the hydraulic telescopic rod 8 is fixed to the top plate 10, and its output end extends to the bottom of the top plate 10 and is connected to the movable column 12. The hydraulic telescopic rod 8 is hydraulically driven to extend and retract vertically, thereby moving the movable column 12.

[0031] Movable column 12: The movable column 12 is installed at the output end of the hydraulic telescopic rod 8, and a collar 11 is provided on the outer vertical plate 9. The movable column 12 can move up and down on the inner side of the vertical plate 9. The collar 11 is used to limit the lateral movement of the movable column 12 and ensure that it moves in the vertical direction.

[0032] Collar 11: Collar 11 is fixed to the vertical plate 9 and fits around the outside of the movable column 12, serving as a guide and limiting element. The collar 11 can be made of a wear-resistant material to extend its service life.

[0033] Connecting plate 5: One end of the connecting plate 5 is installed at one end of the movable column 12, and the other end is connected to the stabilizer bar 6. The function of the connecting plate 5 is to transmit the movement of the movable column 12 to the stabilizer bar 6.

[0034] Stabilizer 6: One end of stabilizer 6 is mounted on connecting plate 5, and its top end is inserted into the guide hole 7 provided at one end of top plate 10. The function of stabilizer 6 is to maintain the stability of the device during the clamping process and prevent the device from deforming due to uneven force.

[0035] A vertical pressure head 13 is installed at the bottom of the movable column 12.

[0036] The vertical pressure head 13 includes a connecting seat 23 connected to the bottom end of the movable column 12. An inner pressure head 24 is provided at the bottom of the connecting seat 23, and an outer pressure head 26 is provided on the outside of the inner pressure head 24. A spring 25 is connected between the outer pressure head 26 and the inner pressure head 24.

[0037] The inner diameter of the outer pressure head 26 is larger than the outer diameter of the inner pressure head 24.

[0038] Connecting seat 23: Connecting seat 23 is connected to the bottom end of movable column 12, serving a supporting and fixing function. Connecting seat 23 is made of high-strength material to ensure that it is not easily deformed or damaged during use.

[0039] Inner pressure head 24: An inner pressure head 24 is provided at the bottom of the connecting seat 23. The inner pressure head 24 is one of the core components of the vertical pressure head 13. It is cylindrical in shape and made of wear-resistant material to ensure that it maintains good working performance during long-term use.

[0040] Outer pressure head 26: An outer pressure head 26 is provided outside the inner pressure head 24. The outer pressure head 26 is also cylindrical, but its inner diameter is larger than the outer diameter of the inner pressure head 24. This design allows the outer pressure head 26 to fit over the inner pressure head 24, forming a nested structure.

[0041] Spring 25: A spring 25 connects the outer pressure head 26 and the inner pressure head 24. The function of the spring 25 is to provide elastic force, allowing the outer pressure head 26 to move relative to the inner pressure head 24 within a certain range. The selection of the spring 25 should be based on the actual application requirements, ensuring that its elastic force is moderate, providing sufficient support without causing excessive resistance.

[0042] A feeding platform 15 is provided on the top of the worktable 1 below the vertical pressure head 13, and a controller 16 is installed on the top of the worktable 1 at one end of the feeding platform 15.

[0043] The feeding table 15 is used to place the materials to be processed. One end of the feeding table 15 is connected to the top of the workbench 1 to ensure that the feeding table 15 remains stable during operation.

[0044] A controller 16 is installed on the top of the workbench 1 at one end of the feeding table 15. The controller 16 is the core control unit of the entire device, responsible for receiving and processing various operation commands and controlling the operation of the servo motor 18. The controller 16 achieves precise control of the feeding process.

[0045] A servo motor 18 is installed at the bottom of the outer side of the vertical plate 9. The output end of the servo motor 18 extends into the recessed groove 22 inside the feeding table 15 and is equipped with a lead screw 21. A bearing plate 17 is installed on the lead screw 21 through a support block 14. A terminal groove 19 and a wire groove 20 are provided on the top of the bearing plate 17.

[0046] The rotational motion of the servo motor 18 is converted into linear motion through the lead screw 21, thereby driving the support plate 17 to move on the feeding table 15.

[0047] A support plate 17 is mounted on the lead screw 21 via a support block 14. The support block 14 not only fixes the support plate 17 but also reduces friction during movement, improving the operating efficiency of the device. The top of the support plate 17 is provided with a terminal slot 19 and a wire slot 20 for placing and fixing electronic components and their connecting wires.

[0048] Terminal slot 19 is used to place the terminals of electronic components, ensuring that the terminals remain neat and orderly during feeding and preventing misalignment. Wire slot 20 is used to place connecting wires, preventing them from shifting during feeding.

[0049] The top of the worktables 1 on both sides of the feeding platform 15 is equipped with telescopic cylinders 2 via support plates 3. The output ends of the two telescopic cylinders 2 extend to the inside of the support plates 3 and are equipped with horizontal pre-compression heads 4.

[0050] One end of the horizontal preload head 4 is provided with stepped blade 1 27, stepped blade 28 and stepped blade 3 29 in sequence, and stepped blade 1 27, stepped blade 28 and stepped blade 3 29 are connected by a ramp.

[0051] The diameters of the stepped blades 27, 28, and 29 increase progressively.

[0052] Support plate 3: Support plate 3 is fixed to the top of workbench 1 and is used to install telescopic cylinder 2. The material of support plate 3 should have good rigidity and durability to ensure long-term stable operation of the device.

[0053] Telescopic cylinder 2: Two telescopic cylinders 2 are respectively installed on both sides of the support plate 3, and their output ends extend to the inner side of the support plate 3. The telescopic cylinders 2 are driven by an air source and can realize the telescopic movement of the horizontal preload head 4.

[0054] Horizontal pre-compression head 4: The horizontal pre-compression head 4 is installed at the output end of the telescopic cylinder 2 and is used to pre-compress the material. One end of the horizontal pre-compression head 4 is provided with stepped blade 1 27, stepped blade 28 and stepped blade 3 29 in sequence.

[0055] Stepped blade 1 (27), stepped blade 2 (28), and stepped blade 3 (29): These three stepped blades are arranged sequentially at one end of the horizontal preload head 4 and connected by a ramp. Stepped blade 1 (27) has the smallest diameter, followed by stepped blade 2 (28), and then stepped blade 3 (29), with the largest diameter, increasing in size. This design enables gradual pressing of the lugs on both sides of the terminal, improving processing efficiency.

[0056] In this embodiment of the application, the hydraulic telescopic rod 8 is in the retracted state, the vertical pressure head 13 is raised to the highest position; the telescopic cylinder 2 retracts, the horizontal pre-pressure head 4 moves away from the feeding table 15; the servo motor 18 drives the lead screw 21 to move the bearing plate 17 to the feeding end of the feeding table 15.

[0057] The operator places the terminal into the terminal slot 19 of the carrier plate 17, ensuring that the lugs on both sides of the terminal face upward and are centered; the stripped cable is placed into the cable slot 20, with the stripped end aligned with the terminal insertion hole, and the cable insulation layer abutting against the limiting surface of the cable slot.

[0058] The controller 16 sends a command, and the servo motor 18 drives the lead screw 21 to move the bearing plate 17 horizontally along the sinker 22 to the crimping station, so that the terminal is located directly below the vertical crimping head 13. The telescopic cylinders 2 on both sides extend synchronously, pushing the horizontal pre-pressing head 4 to move towards the terminal: the first stepped blade 27, with the smallest diameter, first contacts the terminal lug and pre-presses it with the rated pressure to initially fix the lug position; the cylinder continues to move forward, and the second stepped blade 28 contacts the lug, the pressure increases, and the lug and the cable conductor are further compacted; the third stepped blade 29, with the largest diameter, completes the final shaping, so that the lug completely wraps the cable conductor and forms an initial engagement.

[0059] The hydraulic telescopic rod 8 is activated, driving the movable column 12 to descend vertically along the collar 11. The stabilizing rod 6 slides synchronously within the guide hole 7 on the top plate, ensuring that the vertical pressure head 13 moves vertically. The outer pressure head 26 first contacts the top of the terminal. At this time, the inner pressure head 24 is not yet under force, and the spring 25 is in a naturally extended state. As the hydraulic rod continues to descend, the outer pressure head is compressed by the reaction force of the terminal, and the inner pressure head begins to contact the center of the terminal, initially pressing it. After the spring is compressed to its limit stroke, the inner pressure head drives the outer pressure head downward synchronously, completing the final crimping with 100% pressure, so that the center of the terminal and the cable conductor form a deep engagement.

[0060] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0061] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0063] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for crimping electric vehicle cable heads and terminals, comprising a workbench (1) and a feeding table (15), characterized in that: A vertical plate (9) is installed at the middle position on one side of the top of the workbench (1). A hydraulic telescopic rod (8) is installed on the top of the inner side of the vertical plate (9) through the top plate (10). The output end of the hydraulic telescopic rod (8) extends to the bottom of the top plate (10) and is equipped with a movable column (12). A vertical pressure head (13) is installed at the bottom of the movable column (12). A feeding platform (15) is provided on the top of the workbench (1) below the vertical pressure head (13), and a servo motor (18) is installed at the bottom of the outer side of the vertical plate (9). The output end of the servo motor (18) extends into the sinkhole (22) inside the feeding platform (15) and is equipped with a lead screw (21). A bearing plate (17) is installed on the lead screw (21) through a support block (14). A terminal slot (19) and a wire slot (20) are provided on the top of the bearing plate (17). The top of the worktables (1) on both sides of the feeding platform (15) is equipped with telescopic cylinders (2) through support plates (3). The output ends of the two telescopic cylinders (2) extend to the inside of the support plate (3) and are equipped with horizontal preload heads (4).

2. The electric vehicle cable head and terminal clamping device according to claim 1, characterized in that: A collar (11) is provided on the vertical plate (9) on the outside of the movable column (12), and a connecting plate (5) is provided at one end of the movable column (12). A stabilizing rod (6) is installed at one end of the connecting plate (5), and the top end of the stabilizing rod (6) is inserted into the guide hole (7) provided at one end of the top plate (10).

3. The electric vehicle cable head and terminal clamping device according to claim 1, characterized in that: The vertical pressure head (13) includes a connecting seat (23) connected to the bottom end of the movable column (12). The bottom of the connecting seat (23) is provided with an inner pressure head (24), and an outer pressure head (26) is provided on the outside of the inner pressure head (24). A spring (25) is connected between the outer pressure head (26) and the inner pressure head (24).

4. The electric vehicle cable head and terminal clamping device according to claim 3, characterized in that: The inner diameter of the outer pressure head (26) is larger than the outer diameter of the inner pressure head (24).

5. The electric vehicle cable head and terminal clamping device according to claim 1, characterized in that: One end of the horizontal preload head (4) is provided with stepped blade one (27), stepped blade two (28) and stepped blade three (29) in sequence, and the stepped blade one (27), stepped blade two (28) and stepped blade three (29) are connected by a ramp.

6. The electric vehicle cable head and terminal clamping device according to claim 5, characterized in that: The diameters of the stepped blades 1 (27), 2 (28), and 3 (29) increase progressively.

7. The electric vehicle cable head and terminal clamping device according to claim 1, characterized in that: A controller (16) is installed on the top of the workbench (1) at one end of the feeding station (15).

Images