A pneumatic bending tool for connectors
Patent Information
- Application Number
- CN202522251340.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-10-24
AI Technical Summary
手动工装存在显著的操作缺陷，由于人工施力速度不均导致铜件内应力释放差异，实测角度偏差普遍超过±2°，每件产品需耗费30秒以上进行反复校准，且良品率不足75%，这种工艺缺陷在微型连接器（如0.5mm以下直径铜件）生产中尤为突出，容易产生微观裂纹导致插拔寿命下降50%以上
本实用新型采用双气缸联动设计（主折弯气缸+辅助推料气缸），通过比例阀控制气压，实现折弯速度分级调节（0.1～0.5m/s可调），抑制铜件内应力突变，推料杆与折弯动作联动，通过凸轮机构同步完成“折弯-顶出-复位”循环，单件加工周期≤4秒，设备造价仅为整线方案的20%～30%，且支持快速换型（改型耗时<2小时），折弯角度公差控制在+0.3以内，合格率提升至99.5%，零部件的模块式设计允许局部替换故障件，维修时间缩短至1小时以内。
Smart Images
Figure CN224817614U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of connector technology, specifically relating to a pneumatic bending tool for connectors. Background Technology
[0002] In the field of electronic connector manufacturing, the precision and efficiency of the pin bending process directly affect product performance and production costs. Currently, the industry mainly uses two production methods: traditional manual pin bending fixtures and fully automated production lines. Manual fixtures have significant operational defects. Due to uneven force application speed, the stress release within the copper parts varies, resulting in measured angle deviations generally exceeding ±2°. Each product requires more than 30 seconds of repeated calibration, and the yield rate is less than 75%. This process defect is particularly prominent in the production of miniature connectors (such as copper parts with a diameter of less than 0.5mm), easily causing micro-cracks that reduce mating life by more than 50%. While fully automated equipment can improve consistency, it brings three major technical bottlenecks: First, the initial investment is 5-10 times that of manual tooling, requiring additional conveyor lines (approximately 50,000 RMB) and vision inspection modules (approximately 80,000 RMB). Second, the complex mechanical structure results in an average fault repair time exceeding 4 hours, requiring specialized engineers to maintain it with dedicated equipment. Most importantly, its adaptability is limited; each set of equipment is only compatible with a single product model. When switching to different pitches (e.g., from 2.54mm to 1.27mm) or irregularly shaped pins, the core mold, costing 20,000-50,000 RMB, needs to be redesigned and the control program rewritten, with modification costs accounting for over 40% of the total investment. This "high precision and high cost" technical situation severely restricts the technological upgrading of SMEs, especially in the production of rapidly iterating products such as 5G connectors and Type-C interfaces. Existing solutions cannot meet the ±0.5° angle accuracy requirement (e.g., the VSWR index of RF connectors is sensitive to angle deviation) and are difficult to rapidly switch between various materials with diameters of 0.3-2mm. The market urgently needs bending solutions that can solve the ±1.5° angle fluctuation problem caused by the ±0.2mm stroke error of traditional cylinders by using pneumatic servo control technology while maintaining a moderate cost of 30,000-50,000 yuan. At the same time, it can realize the modular and rapid replacement of molds. This is of great significance to promoting the development of the connector industry towards flexibility and precision. Utility Model Content
[0003] In view of the problems mentioned above in the background art, the purpose of this utility model is to provide a pneumatic bending tool for connectors.
[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A pneumatic bending tool for connectors includes a base plate, on which a sliding support and a module support are mounted. The sliding support is provided with a sliding limiting groove and a bearing is mounted on it. A spur gear is fixedly mounted on the end of the bearing protruding from the sliding support. A support block is fixedly mounted on the spur gear. A bending plate is fixedly mounted on the support block. A telescopic cylinder bracket is mounted on the sliding support. A first telescopic cylinder is mounted on the telescopic cylinder bracket. A push block is connected to the output end of the first telescopic cylinder. A top column is mounted on the push block. The shaft of the spur gear is hollow, and the push block is located in the hollow position of the shaft of the spur gear. The module support is equipped with a switchable tooling seat, and a rack is slidably installed in the sliding limit groove. The rack meshes with the spur gear, and a second telescopic cylinder is connected to the end of the rack. The second telescopic cylinder is fixedly installed on the base plate.
[0005] Furthermore, the base plate is equipped with a stop seat, and the stop seat is equipped with a stop post. The stop post is positioned corresponding to the other end of the rack. This design can limit the rack from overtraveling under the push of the second telescopic cylinder.
[0006] Furthermore, the sliding support is equipped with a color mark sensor, the rack is coated with a color mark, and the monitoring direction of the color mark sensor corresponds to the color mark. This design can help determine whether there is a deviation in the movement position of the rack.
[0007] Furthermore, the output end of the second telescopic cylinder is connected to a plug, and the rack is installed on the plug in a detachable plug-in manner. This design allows for quick replacement and installation of racks of different specifications.
[0008] Furthermore, the switchable tooling base is fixedly installed on the module support by screws. This design ensures the installation strength of the switchable tooling base while also facilitating its replacement.
[0009] The beneficial effects of using this utility model are as follows: This utility model adopts a dual-cylinder linkage design (main bending cylinder + auxiliary pushing cylinder), and controls the air pressure through a proportional valve to achieve graded adjustment of bending speed (adjustable from 0.1 to 0.5 m / s), suppressing sudden changes in internal stress of copper parts. The pushing rod is linked with the bending action, and the "bending-ejection-reset" cycle is completed synchronously through the cam mechanism. The processing cycle of a single piece is ≤4 seconds, and the equipment cost is only 20% to 30% of the total line solution. It also supports rapid changeover (modification time <2 hours), the bending angle tolerance is controlled within +0.3, the pass rate is increased to 99.5%, and the modular design of the parts allows for partial replacement of faulty parts, shortening the maintenance time to less than 1 hour. Attached Figure Description
[0010] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the structure of an embodiment of the pneumatic bending needle tooling for connectors according to this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of an embodiment of the pneumatic bending needle tooling for connectors according to this utility model. Figure 2 ; Figure 3 This is a partial structural schematic diagram of an embodiment of a pneumatic bending needle tooling for connectors according to the present invention. The symbols for the main components are explained below: 1. Base plate; 2. Sliding support; 3. Module support; 4. Sliding limiting groove; 5. Bearing; 6. Circular gear; 7. Support block; 8. Bending plate; 9. Telescopic cylinder bracket; 10. First telescopic cylinder; 11. Push block; 12. Top column; 13. Switchable tooling seat; 14. Rack; 15. Second telescopic cylinder; 16. Stop seat; 17. Stop column; 18. Color mark sensor; 19. Color mark; 20. Insert block. Detailed Implementation
[0011] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0012] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides a pneumatic bending tool for connectors, comprising a base plate 1, a sliding support 2 and a module support 3 mounted on the base plate 1, the sliding support 2 having a sliding limiting groove 4, a bearing 5 mounted on the sliding support 2, a spur gear 6 fixedly mounted on the end of the bearing 5 protruding from the sliding support 2, a support block 7 fixedly mounted on the spur gear 6, a bending plate 8 fixedly mounted on the support block 7, a telescopic cylinder bracket 9 mounted on the sliding support 2, a first telescopic cylinder 10 mounted on the telescopic cylinder bracket 9, a push block 11 connected to the output end of the first telescopic cylinder 10, a top column 12 mounted on the push block 11, the shaft of the spur gear 6 being hollow, and the push block 11 being located in the hollow position of the shaft of the spur gear 6; The module support 3 is equipped with a switchable tooling seat 13, and a rack 14 is slidably installed in the sliding limit groove 4. The rack 14 meshes with the spur gear 6, and a second telescopic cylinder 15 is connected to the end of the rack 14. The second telescopic cylinder 15 is fixedly installed on the base plate 1.
[0013] In this embodiment, when using a pneumatic bending tool for connectors, the switchable tooling base 13 for the connector that needs to be bent is installed on the module support 3, and then the connector is placed in the switchable tooling base 13. It should be noted that the switchable tooling base 13 has a slot for fixing the connector, which is also shown in the figure. However, the specific shape of the slot depends on the specifications of the connector. The position of the connector in the slot does not need to be limited, as long as the pin is within the contact range of the bending plate 8. After the connector is inserted, the second telescopic cylinder 15 operates, driving the rack 14 to move in the sliding limit groove 4. Under this movement, the circular gear 6 meshing with the rack 14 rotates, and the bending plate 8 mounted on the circular gear 6 with the support block 7 moves accordingly, thereby abutting the pin on the connector to bend. The bending angle is affected by the rotation angle of the circular gear 6, and the rotation angle is affected by the moving distance of the rack 14. Therefore, the angle is controllable, ensuring that the bent pin meets the technical requirements. After the needle bending is completed, the circular gear 6 drives the bending plate 8 to return to its original position, and then the connector can be removed directly. The removal method includes, but is not limited to, the operation of the first telescopic cylinder 10, which drives the push-open 11 to move towards the switchable tooling seat 13, so that the top post 12 pushes the connector out of the slot of the switchable tooling seat 13.
[0014] The preferred substrate 1 is equipped with a stop 16, and the stop 16 is equipped with a stop post 17. The stop post 17 is positioned at the other end of the rack 14. This design can limit the rack 14 from overtraveling under the push of the second telescopic cylinder 15. In fact, limiting measures can also be considered depending on the specific situation.
[0015] Preferably, the sliding support 2 is equipped with a color mark sensor 18, and the rack 14 is coated with a color mark 19. The monitoring direction of the color mark sensor 18 corresponds to the color mark 19. This design can help determine whether there is a deviation in the moving position of the rack 14. In fact, error detection measures can also be considered according to the specific situation.
[0016] Preferably, the output end of the second telescopic cylinder 15 is connected to the plug block 20, and the rack 14 is installed on the plug block 20 in a detachable plug-in manner. This design allows for quick replacement and installation of racks 14 of different specifications. In fact, the installation measures of rack 14 can also be considered according to specific circumstances.
[0017] The interchangeable tooling base 13 is preferably fixed to the module support 3 with screws. This design ensures the installation strength of the interchangeable tooling base 13 and facilitates its replacement. In fact, the installation method of the interchangeable tooling base 13 can also be considered according to the specific situation.
[0018] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A pneumatic bending tool for connectors, comprising a base plate (1), characterized in that: The base plate (1) is equipped with a sliding support (2) and a module support (3). The sliding support (2) is provided with a sliding limit groove (4). The sliding support (2) is equipped with a bearing (5). The bearing (5) is fixedly installed with a spur gear (6) protruding from the end of the sliding support (2). The spur gear (6) is fixedly installed with a support block (7). The support block (7) is fixedly installed with a bending plate (8). The sliding support (2) is equipped with a telescopic cylinder bracket (9). The telescopic cylinder bracket (9) is equipped with a first telescopic cylinder (10). The output end of the first telescopic cylinder (10) is connected to a push block (11). The push block (11) is equipped with a top column (12). The shaft of the spur gear (6) is hollow. The push block (11) is located in the hollow position of the shaft of the spur gear (6). The module support (3) is equipped with a switchable tooling seat (13), and the sliding limit groove (4) is slidably equipped with a rack (14). The rack (14) meshes with the spur gear (6). The end of the rack (14) is connected to a second telescopic cylinder (15), which is fixedly installed on the base plate (1).
2. The pneumatic bending tool for connectors according to claim 1, characterized in that: The substrate (1) is equipped with a stop (16), and the stop (16) is equipped with a stop post (17), the position of the stop post (17) corresponding to the other end of the rack (14).
3. The pneumatic bending tool for connectors according to claim 2, characterized in that: The sliding support (2) is equipped with a color mark sensor (18), the rack (14) is coated with a color mark (19), and the color mark sensor (18) monitors the direction corresponding to the color mark (19).
4. The pneumatic bending tool for connectors according to claim 3, characterized in that: The output end of the second telescopic cylinder (15) is connected to a plug (20), and the rack (14) is installed on the plug (20) in a detachable plug-in manner.
5. A pneumatic bending tool for connectors according to claim 4, characterized in that: The switchable tooling base (13) is fixedly installed on the module support (3) by screws.