Automatic adjustable pin bending mechanism

Abstract

The invention provides an automatic adjustable pin bending mechanism. The automatic adjustable pin bending mechanism comprises a horizontal alignment adjusting module, an up-down alignment adjusting module and a bending module. The bending module comprises a base frame, a pressing and clamping unit and an arc-shaped bending assembly driven by a servo motor, the bending assembly, an arc-shaped sliding groove and an arc-shaped groove form an internal and external cooperative guide structure through a gear plate, and the bending module is provided with a bending block with an adjustable correction block. According to the pin bending device, high-precision and high-stability bending of pins of multiple specifications can be achieved, and the product compatibility and the bending qualification rate are improved.

Description

Technical Field

[0001] This invention relates to the field of automation equipment technology, and more specifically, to an automatic adjustable pin bending mechanism. Background Technology

[0002] In the field of electronic components, pin bending is a key process for achieving reliable electronic connections. Traditional bending mechanisms generally use pneumatic drive, which has low compatibility and can only be used for a single product. However, pin bending requires compatibility with multiple products and must be compatible without damage. Pneumatic drive is prone to affecting accuracy due to air pressure fluctuations, which does not meet the requirements.

[0003] In view of this, the applicant hereby submits this application after studying the existing technology. Summary of the Invention

[0004] The present invention provides an automatic adjustable pin bending mechanism, which aims to improve at least one of the above-mentioned technical problems.

[0005] To solve the above technical problems, the present invention provides an automatic adjustable pin bending mechanism, including a horizontal alignment adjustment module, a vertical alignment adjustment module, and a bending module. The horizontal alignment adjustment module is used to control the vertical alignment adjustment module to move horizontally, and the vertical alignment adjustment module is used to control the bending module to move vertically. The bending module includes:

[0006] A base frame on which a support base is provided to support and carry the straight section of the pin; The pressing and clamping unit is located above the support base and cooperates with the support base to clamp and fix the straight section of the pin and expose the bent section of the pin. A bending assembly, disposed on the base frame, is used to drive the bent section of the pin to bend relative to the straight section.

[0007] As a further optimization, the bending assembly includes a bending motor, a transmission gear, a gear plate, a mounting block, and a bending block. The base frame is provided with an arc-shaped sliding groove, the axis of which coincides with the rotation center of the bent pin, and the gear plate slides in conjunction with the arc-shaped sliding groove; The bending motor is mounted on one side of the base frame, and its output end is connected to the transmission gear. The gear plate has arc-shaped teeth on one side that mesh with the transmission gear; The mounting block is fixedly connected to the gear plate, and a bending block is mounted on it. Initially, the end of the bending block abuts against the bent section of the pin. Driven by the bending motor, the gear plate moves along the trajectory of the arc-shaped slide groove, and then drives the bending block to rotate in an arc around the axis of the arc-shaped slide groove through the mounting block, so as to achieve bending of the pin bending section.

[0008] As a further optimization, an arc-shaped groove is formed on the base frame, and the axis of the arc-shaped surface of the arc-shaped groove coincides with the axis of the arc-shaped slide groove. The mounting block is slidably connected to the arc-shaped surface of the arc-shaped groove.

[0009] As a further optimization, it also includes multiple rollers, and the gear plate slides in contact with the arc-shaped groove through the rollers.

[0010] As a further optimization, a follower plate is also included, which is installed on the side of the mounting block away from the gear plate, and the roller connection is disposed between the follower plate and the gear plate.

[0011] As a further optimization, the bending block is provided with a groove, and a correction block is movably and adjustablely disposed in the groove. The correction block is provided with a correction groove, which is adapted to the pin.

[0012] As a further optimization, two correction blocks are provided, each with a strip-shaped hole, and the correction block is installed on the bending block by bolts passing through the strip-shaped holes.

[0013] As a further optimization, the pressing and clamping unit includes a driving cylinder and a pressing block. The driving cylinder is mounted on the base frame, and its output end is connected to the pressing block via a connector. A sliding pair is provided between the pressing block and the base frame.

[0014] As a further optimization, the pressing block is L-shaped, with its end near the rotation center of the bent pin being arc-shaped.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects: This application provides an automatic adjustable pin bending mechanism that achieves precise alignment of the pin bending position through a horizontal and vertical dual-degree-of-freedom alignment adjustment module; precise control of the bending angle through a servo motor-driven arc-shaped bending component; and ensures the concentricity and motion rigidity of the bending trajectory through an internal and external coordinated guiding system composed of a gear plate, roller, arc-shaped slide, and arc-shaped groove. An adjustable correction block structure provides adaptive limiting for different pin spacings and cross-sectional shapes. An enveloping clamping mechanism between an L-shaped pressing block and a support base prevents pin displacement during bending. These technical features work together to form a high-precision, high-stability, and highly compatible automatic pin bending mechanism suitable for bending various types and models of pins, solving the technical problems of low precision, poor compatibility, and easy pin damage in traditional pneumatic bending equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of one side of the overall structure of an automatic adjustable pin bending mechanism according to the present invention; Figure 2 This is a high-view structural schematic diagram of an automatic adjustable pin bending mechanism according to the present invention; Figure 3 This is the present invention. Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of the automatic adjustable pin bending mechanism of the present invention after removing the follower plate on the other side; Figure 5 This is a partial structural schematic diagram of the bending module of the present invention; Figure 6 This is a side view of the automatic adjustable pin bending mechanism of the present invention after removing the follower board; Figure 7 This is a schematic diagram of the pins after bending according to one embodiment of the present invention; The markings in the diagram are: 1. Horizontal alignment adjustment module; 2. Vertical alignment adjustment module; 3. Bending module; 4. Base frame; 5. Support base; 6. Pressing and clamping unit; 7. Drive cylinder; 8. Pressing block; 9. Connector; 10. Sliding pair; 11. Bending assembly; 12. Bending motor; 13. Transmission gear; 14. Gear plate; 15. Arc-shaped tooth; 16. Arc-shaped slide groove; 17. Mounting block; 18. Bending block; 19. Arc-shaped groove; 20. Roller; 21. Follower plate; 22. Correction block; 23. Correction groove; 24. Strip hole; 25. Groove; 26. Pin; 27. Straight section; 28. Bending section. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] The present invention provides an automatic adjustable pin bending mechanism, the overall structure of which is as follows: Figure 1-7 As shown, the system includes a horizontal alignment adjustment module 1, a vertical alignment adjustment module 2, and a bending module 3. The horizontal alignment adjustment module 1 is mounted on the equipment frame and drives the vertical alignment adjustment module 2 to move horizontally (i.e., in the front-to-back direction). The vertical alignment adjustment module 2 is mounted on a slide of the horizontal alignment adjustment module 1 and drives the bending module 3 to move vertically (i.e., in the up-down direction). Through the coordinated adjustment of these two degrees of freedom, the bending module 3 can precisely align with the bending start position of different product pins, thereby adapting to the pin length, extension height, and bending angle requirements of various electronic components.

[0020] The bending module 3 includes a base frame 4, a pressing and clamping unit 6, and a bending assembly 11. The base frame 4 is fixed on the vertical slide of the upper and lower alignment adjustment module 2, and a support base 5 is provided on it to support and bear the straight section 27 of the pin 26 to be bent. The pressing and clamping unit 6 is located directly above the support base 5 and includes a drive cylinder 7, a pressing block 8, a connector 9, and a sliding pair 10. The drive cylinder 7 is mounted on the top of the base frame 4, and its output end is connected to the pressing block 8 through the connector 9. The pressing block 8 has an L-shaped structure, and its vertical arm cooperates with the vertical guide post on the base frame 4 through the sliding pair 10 to ensure smooth movement only in the vertical direction. The horizontal arm of the pressing block 8 extends directly above the support base 5, and its lower surface cooperates with the support base 5 to clamp and fix the straight section 27 of the pin 26. Before bending, the drive cylinder 7 is activated, pushing the pressing block 8 downward to firmly clamp the straight section 27 of pin 26 between the support base 5 and the pressing block 8, while simultaneously exposing the bent section 28 of pin 26 to provide stable support for subsequent bending.

[0021] Among them, the end of the pressing block 8 near the bending and rotation center of the pin has an arc-shaped profile, which not only ensures the effective pressing area, but also avoids interference with the moving parts during the bending process. This arc-shaped surface also serves as the bending center of the pin 26.

[0022] Preferably, the bending assembly 11 is mounted on the base frame 4 to drive the bent section 28 of the pin to bend at a controllable angle around its junction with the straight section. The bending assembly 11 includes a bending motor 12, a transmission gear 13, a gear plate 14, a mounting block 17, and a bending block 18. The bending motor 12 is a servo motor, mounted on one side of the base frame 4, and its output end is fixedly connected to the transmission gear 13. An arc-shaped groove 16 is provided on the base frame 4, the axis of which coincides with the rotation center of the pin 26 to bend as intended. The arc length of the arc-shaped groove 16 covers a bending angle range of 0° to 90°, and the upper limit is not limited to 90°, covering the entire process of the pin from its original straight state to bending.

[0023] Among them, one side of the gear plate 14 is provided with an arc-shaped tooth 15 that meshes with the transmission gear 13. The central angle of the arc-shaped tooth 15 is consistent with the arc-shaped groove 16. The parameters of the arc-shaped tooth 15 are matched with the transmission gear 13 to ensure smooth meshing throughout the entire movement and avoid tooth skipping or transmission interruption.

[0024] Furthermore, the gear plate 14 is slidably engaged with the arc-shaped groove 16 by multiple rollers 20. There are two or more rollers 20, which are distributed radially along the gear plate 14. Each roller 20 is mounted on the gear plate 14 or the follower plate 21 by a bearing. Its outer circumferential surface contacts the inner wall of the arc-shaped groove 16, and its axis is perpendicular to the plane where the arc-shaped groove 16 is located. Rolling friction replaces sliding friction, reducing motion resistance and improving response accuracy and service life.

[0025] Specifically, the mounting block 17 is fixedly connected to the gear plate 14 by bolts. Its bottom end has an arc-shaped structure and slides against the arc-shaped surface of the arc-shaped groove 19 opened on the base frame 4. The centerline of the arc-shaped surface of the arc-shaped groove 19 coincides with the centerline of the arc-shaped slide 16, and the arc length matches the arc-shaped slide 16, ensuring that the mounting block 17 is always in an inner guiding constraint state throughout the entire bending stroke. In addition, the mechanism also includes a follower plate 21, which is installed on the side of the mounting block 17 away from the gear plate 14. A roller 20 is connected and disposed between the follower plate 21 and the gear plate 14. Thus, the gear plate 14 and the follower plate 21 clamp the mounting block 17 from both sides. The outer side of the entire bending body is guided along the arc-shaped slide 16 by the roller 20, and the inner side is guided along the arc-shaped groove 19 by the bottom arc of the mounting block 17, forming an arc-shaped motion pair with internal and external coordination and internal and external constraint, which significantly improves the structural stability during the bending process and prevents vibration or sway.

[0026] Preferably, the bending block 18 is fixed to the top of the mounting block 17 with screws. In the initial state, the top of the bending block 18 is flush with the end face of the support base 5. After the pin 26 is clamped and fixed on the support base 5, its bent section 28 is exposed and placed on the upper end face of the bending block 18. The bending block 18 is provided with a groove 25. In this embodiment, two correction blocks 22 are adjustablely installed in the groove 25. Each correction block 22 has a correction groove 23 adapted to the pin. The bottom of the correction groove 23 is flush with the upper end face of the bending block 18. The correction block 22 is provided with a strip hole 24. The length direction of the strip hole 24 is arranged along the line connecting the two correction blocks 22. The correction block 22 is fixed to the bending block 18 by bolts passing through the strip hole 24. After loosening the bolts, the distance between the two correction blocks 22 can be adjusted along the direction of the strip hole 24 to adapt to products with different pin spacings. At the same time, the correction blocks 22 can be replaced with different specifications and models to further expand the multi-product compatibility of the mechanism. The two inner walls of the correction groove 23 are also provided with guide slopes, which are used to guide the bent section 28 of the pin to smoothly enter the correction groove 23 in the initial stage of bending. The correction groove 23 limits the pin 26 from both sides, which can prevent the pin 26 from becoming inward or outward after bending.

[0027] In actual operation, this mechanism performs the following steps: S1: Based on the height and extension length of the pin 26 of the product to be processed, the control system drives the vertical drive unit (such as a servo motor) in the upper and lower alignment adjustment module 2, which moves the vertical slide along the vertical guide rail via a lead screw, adjusting the vertical position of the bending module 3 so that the upper surface of the support base 5 is precisely aligned with the bottom of the straight section of the pin; S2: Based on the front and rear position of the product on the carrier, the control system drives the horizontal drive unit (such as a servo motor) in the horizontal alignment adjustment module 1, which moves the horizontal slide along the horizontal guide rail via a lead screw, adjusting the horizontal position of the bending module 3 so that the axis of the arc-shaped slide groove 16 (i.e., the bending rotation center) is precisely aligned with the intersection of the pin bending; S3: The drive cylinder 7 is activated, pushing the pressing block 8 along the sliding pair 10. S4: The bending motor 12 starts, and its encoder signal is connected to the control system. The control system calculates the required rotation angle of the servo motor in reverse according to the preset bending angle. The bending motor 12 drives the gear plate 14 to move along the arc-shaped slide groove 16 through the transmission gear 13, which drives the mounting block 17 and the bending block 18 to rotate in an arc around the rotation center, applying a bending moment to the bending section 28 of the pin. S5: The bending section 28 of the pin is constrained by the left and right limits of the correction groove 23 to complete the bending, effectively preventing deformation defects such as "inward" or "outward" bending. S6: After the bending is completed, the bending motor 12 returns to the initial position, the driving cylinder 7 is reset, the pressing block 8 rises, and the pin 26 is released, completing one bending cycle.

[0028] The entire mechanism is designed with the needs of multi-variety, small-batch electronic manufacturing scenarios in mind. The support base 5 and the base frame 4 are connected in a detachable manner. Precise control of the bending motor 12, combined with gear transmission ratios, allows for precise setting of the bending angle. Furthermore, both the horizontal alignment adjustment module 1 and the vertical alignment adjustment module 2 are servo-driven, also meeting high-precision assembly requirements. Through the synergistic effect of the above structure and control strategies, this invention achieves high-precision, high-stability, and highly compatible automatic bending of pins 26 of various specifications, completely solving the technical problems of low precision, poor compatibility, and easy damage to pins caused by air pressure fluctuations in traditional pneumatic bending equipment.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An automatic adjustable pin bending mechanism, characterized in that, It includes a horizontal alignment adjustment module, a vertical alignment adjustment module, and a bending module. The horizontal alignment adjustment module is used to control the vertical alignment adjustment module to move in the horizontal direction, and the vertical alignment adjustment module is used to control the bending module to move in the vertical direction. The bending module includes: A base frame on which a support base is provided to support and carry the straight section of the pin; The pressing and clamping unit is located above the support base and cooperates with the support base to clamp and fix the straight section of the pin and expose the bent section of the pin. A bending assembly, disposed on the base frame, is used to drive the bent section of the pin to bend relative to the straight section.

2. The automatic adjustable pin bending mechanism according to claim 1, characterized in that... The bending assembly includes a bending motor, a transmission gear, a gear plate, a mounting block, and a bending block. The base frame is provided with an arc-shaped sliding groove, the axis of which coincides with the rotation center of the bent pin, and the gear plate slides in cooperation with the arc-shaped sliding groove. The bending motor is mounted on one side of the base frame, and its output end is connected to the transmission gear. The gear plate has arc-shaped teeth on one side that mesh with the transmission gear; The mounting block is fixedly connected to the gear plate, and a bending block is mounted on it. Initially, the end of the bending block abuts against the bent section of the pin. Driven by the bending motor, the gear plate moves along the trajectory of the arc-shaped slide groove, and then drives the bending block to rotate in an arc around the axis of the arc-shaped slide groove through the mounting block, so as to achieve bending of the pin bending section.

3. The automatic adjustable pin bending mechanism according to claim 2, characterized in that... An arc-shaped groove is provided on the base frame, and the axis of the arc surface of the arc-shaped groove coincides with the axis of the arc-shaped slide groove. The mounting block is slidably connected to the arc surface of the arc-shaped groove.

4. The automatic adjustable pin bending mechanism according to claim 3, characterized in that... It also includes multiple rollers, and the gear plate slides in contact with the arc-shaped groove through the rollers.

5. An automatic adjustable pin bending mechanism according to claim 4, characterized in that... It also includes a follower plate, which is installed on the side of the mounting block away from the gear plate, and the roller connection is disposed between the follower plate and the gear plate.

6. An automatic adjustable pin bending mechanism according to claim 2, characterized in that... The bending block is provided with a groove, and a correction block is movably and adjustablely arranged in the groove. The correction block is provided with a correction groove, which is adapted to the pin.

7. An automatic adjustable pin bending mechanism according to claim 6, characterized in that... Two correction blocks are provided, each with a strip-shaped hole. The correction blocks are mounted on the bending block by bolts passing through the strip-shaped holes.

8. An automatic adjustable pin bending mechanism according to claim 1, characterized in that... The pressing and clamping unit includes a driving cylinder and a pressing block. The driving cylinder is mounted on the base frame, and its output end is connected to the pressing block through a connector. A sliding pair is provided between the pressing block and the base frame.

9. An automatic adjustable pin bending mechanism according to claim 8, characterized in that... The pressing block is L-shaped, and its end near the rotation center of the bent pin is arc-shaped.

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