Spring buffer structure of anti-collision mechanical clamping jaw
By employing a multi-stage spring buffer structure and adjusting screw design, the impact problem of mechanical grippers during collisions is solved, achieving effective energy absorption and performance adjustment, and improving the safety and adaptability of the grippers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HONGHAOXIN AUTOMATION TECH CO LTD
- Filing Date
- 2025-05-24
- Publication Date
- 2026-04-21
AI Technical Summary
Existing mechanical grippers lack effective buffering structures upon collision, resulting in high impact forces that easily damage the grippers and the objects being gripped. Furthermore, existing buffering structures are ineffective, have poor adaptability, and are complex and difficult to maintain.
It adopts a multi-stage spring buffer design, including spring one, spring two and buffer block. The multi-stage buffer structure absorbs collision energy and the buffer performance can be adjusted by adjusting the screw and nut to adapt to different working conditions.
It effectively reduces the impact force of collisions on the grippers and the objects being gripped, improves the safety and reliability of the grippers, has strong adaptability, and is simple in structure and easy to maintain.
Smart Images
Figure CN224144683U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical gripper technology, and in particular to a spring buffer structure for an anti-collision mechanical gripper. Background Technology
[0002] In modern industrial automation, mechanical grippers are widely used as key components in material handling, parts assembly, and processing. From automobile manufacturing lines and electronics assembly workshops to cargo sorting systems in logistics warehousing, mechanical grippers play a vital role in precisely grasping and transferring objects.
[0003] However, in actual operation, mechanical grippers inevitably collide, such as with the object being gripped, surrounding equipment, or other moving parts. Some mechanical grippers lack effective buffer structures, and a large impact force is generated during collisions. This can easily damage the gripper itself and may also damage the object being gripped, affecting normal production and product quality. Moreover, some existing buffer structures often have problems such as poor buffering effect, poor adaptability, and complex structure that is difficult to maintain, which cannot meet the needs of efficient and reliable operation of mechanical grippers in industrial production. In view of this technical problem, this application proposes a spring buffer structure for anti-collision mechanical grippers. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a spring-buffered structure for an anti-collision mechanical gripper. Through a multi-stage spring buffer design, it effectively absorbs collision energy, reduces the impact of collisions on the gripper and the object being gripped, and has the advantages of adjustable buffering performance and stable and reliable structure, thereby improving the safety and reliability of mechanical grippers in industrial production.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A spring-buffered structure for an anti-collision mechanical gripper includes a fixed plate. A support frame is fixedly connected to the upper end of the fixed plate. A hydraulic rod is mounted on the upper end of the support frame. A connecting plate is fixedly connected to the driving end of the hydraulic rod. Multiple guide rods are fixedly connected to the lower end of the connecting plate. The outer walls of the guide rods are slidably connected to the interior of the fixed plate. A spring is sleeved on the upper side of the outer wall of the guide rod. The lower end of the spring is fixedly connected to the upper end of the fixed plate. A shaped rod is connected to the lower end of the guide rod through a connecting assembly. A buffer box is fixedly connected to the lower end of the shaped rod. A gripper block is connected to the interior of the buffer box through a buffer assembly.
[0007] Furthermore, the connecting assembly includes a fixing lug fixedly connected to the lower end of the guide rod, a connecting rod rotatably connected to the middle of the fixing lug, and the lower end of the connecting rod rotatably connected to the upper end of the irregular rod.
[0008] Furthermore, a plurality of fixing blocks are fixedly connected to the lower end of the fixing plate, and the lower end of the fixing blocks is rotatably connected to the middle part of the irregular rod.
[0009] Furthermore, the buffer assembly includes a sliding plate internally connected to the buffer box, with multiple sets of springs fixedly connected to one opposite end of the sliding plate, and the other end of the springs fixedly connected to the opposite end of the gripper block.
[0010] Furthermore, an adjusting screw is fixedly connected to one end of the sliding plate opposite to the other end, the outer wall of the adjusting screw is threadedly connected to one end of the buffer box opposite to the other end, and an adjusting nut is threadedly connected to the outer wall of the adjusting screw.
[0011] Furthermore, a rubber pad is fixedly connected to one end of the gripper block.
[0012] Furthermore, a buffer block is fixedly connected to the lower end of the buffer box, and the buffer block is made of plastic foam.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, a multi-level buffer structure is formed by spring one, spring two, and buffer block. When a collision occurs, the gripper block is buffered by spring two in the buffer box to reduce the impact force on the grasped object; spring one absorbs part of the collision energy through the deformation transmitted by the guide rod; and the buffer block buffers the bottom collision. Through the multi-level buffer design, the collision energy can be absorbed more fully and effectively, protecting the gripper structure and the grasped object, and greatly reducing the damage caused by the collision.
[0015] 2. In this utility model, the preload of the second spring can be easily adjusted by the setting of the adjusting screw and adjusting nut, and the buffering performance can be flexibly adjusted according to different working scenarios, so that the gripper can better adapt to various working conditions, thereby improving the practicality and adaptability of the buffer structure. Attached Figure Description
[0016] Figure 1 This is an overall schematic diagram of the spring buffer structure of an anti-collision mechanical gripper proposed in this utility model;
[0017] Figure 2 This is a schematic diagram of the connection assembly of the spring buffer structure of the anti-collision mechanical gripper proposed in this utility model;
[0018] Figure 3 This is a cross-sectional view of the buffer box of a spring buffer structure for an anti-collision mechanical gripper proposed in this utility model.
[0019] Legend:
[0020] 1. Fixed plate; 2. Support frame; 3. Hydraulic rod; 4. Connecting plate; 5. Guide rod; 6. Spring 1; 7. Fixing ear; 8. Connecting rod; 9. Fixing block; 10. Irregular rod; 11. Buffer box; 12. Gripper block; 13. Rubber pad; 14. Spring 2; 15. Slide plate; 16. Adjusting screw; 17. Adjusting nut; 18. Buffer block. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a spring-buffered structure for an anti-collision mechanical gripper, comprising a fixed disk 1, a support frame 2 fixedly connected to the upper end of the fixed disk 1, a hydraulic rod 3 mounted on the upper end of the support frame 2, a connecting disk 4 fixedly connected to the driving end of the hydraulic rod 3, and multiple guide rods 5 fixedly connected to the lower end of the connecting disk 4. The outer walls of the guide rods 5 are slidably connected to the interior of the fixed disk 1, and a spring 6 is sleeved on the upper side of the outer wall of the guide rod 5. The lower end of the spring 6 is fixedly connected to the upper end of the fixed disk 1, and the lower end of the guide rod 5 is connected to a connecting assembly. The component is connected to a non-circular rod 10. The connecting assembly includes a fixing ear 7 fixedly connected to the lower end of the guide rod 5, a connecting rod 8 rotatably connected to the middle of the fixing ear 7, and the lower end of the connecting rod 8 rotatably connected to the upper end of the non-circular rod 10. Multiple fixing blocks 9 are fixedly connected to the lower end of the fixing plate 1. The lower end of the fixing block 9 is rotatably connected to the middle of the non-circular rod 10. A buffer box 11 is fixedly connected to the lower end of the non-circular rod 10. A gripper block 12 is connected inside the buffer box 11 through a buffer assembly. A rubber pad 13 is fixedly connected to the opposite end of the gripper block 12.
[0023] Specifically, the hydraulic rod 3 is activated, and its drive end moves the connecting plate 4 downward, which in turn moves the guide rod 5 downward. The guide rod 5 then moves the connecting rod 8, causing the irregular rod 10 to rotate around the fixed block 9, allowing the gripper block 12 to grasp the object. During this process, the spring 6 reduces the descent rate of the connecting plate 4 and the guide rod 5, preventing the gripper block 12 from colliding with the object. If a collision occurs, the rubber pad 13 absorbs some energy through its elastic deformation at the moment of impact, while simultaneously increasing the friction with the grasped object to prevent it from slipping. The connecting rod 8, with its rotating connection at both ends, can flexibly change the direction of the force to adapt to collisions at different angles, allowing the impact force to be effectively transmitted from the irregular rod 10 to the guide rod 5, causing the guide rod 5 to slide upward, reducing the compression of the spring 6 and buffering the energy generated by the collision. The fixed block 9, rotating with the irregular rod 10, provides a stable support point for the irregular rod 10, ensuring its stable rotation under force and smooth transmission of impact force.
[0024] Reference Figure 2 and Figure 3 The buffer assembly includes a sliding plate 15 internally connected to the buffer box 11. Multiple sets of springs 14 are fixedly connected to one end of the sliding plate 15. The other end of the springs 14 is fixedly connected to the opposite end of the gripper block 12. An adjusting screw 16 is fixedly connected to the opposite end of the sliding plate 15. The outer wall of the adjusting screw 16 is threadedly connected to the opposite end of the buffer box 11. An adjusting nut 17 is threadedly connected to the outer wall of the adjusting screw 16. A buffer block 18 is fixedly connected to the lower end of the buffer box 11. The buffer block 18 is made of plastic foam.
[0025] Specifically, when the gripper block 12 is subjected to an impact force, the force is transmitted to the connected spring 14. The spring 14 is compressed and absorbs the impact energy through its elastic deformation, thus mitigating the impact of the impact force on the overall structure of the gripper. The adjusting screw 16 is threadedly connected to the buffer box 11. Rotating the adjusting screw 16 moves the slide plate 15. The adjusting nut 17 is used to lock the position of the adjusting screw 16. By adjusting the position of the slide plate 15, the preload of the spring 14 can be changed, thereby achieving precise adjustment of the buffering performance for gripped objects of different weights and hardnesses, as well as for collision conditions of different intensities, improving the gripper's adaptability to complex working environments. When the bottom of the gripper contacts the impact object first, the buffer block 18 contacts the impact object first. Utilizing the porous structure and elasticity of the plastic foam, the buffer block 18 deforms to absorb the impact energy, reducing the impact of bottom collisions on the gripper. The spring 14 and the buffer block 18 provide buffer protection from the inside and bottom respectively, forming a dual buffering mechanism, further enhancing the absorption and resistance to impact forces, and more effectively protecting the gripper and the gripped object.
[0026] Working principle: When the mechanical gripper is performing normal gripping operations, the hydraulic rod 3 is activated, pushing the connecting plate 4 downwards via the drive end. The connecting plate 4 drives the guide rod 5 downwards as well. The irregular rod 10 rotates around the fixed block 9 under the action of the connecting rod 8, causing the gripper block 12 to approach and clamp the object being gripped. During this process, spring 6 prevents the guide rod 5 from moving too fast, which could cause the gripper to collide with the object. When the mechanical gripper is subjected to a collision impact, if the impact force comes from the side of the gripper, the impact force is first transmitted to the gripper block 12. After being subjected to force, the gripper block 12 compresses the spring 14, which absorbs some of the collision energy. At the same time, the impact force is transmitted to the guide rod 5 through the irregular rod 10 and the connecting rod 8. The guide rod 5, in its fixed position... The fixed plate 1 slides upward, releasing the spring 6. The spring 6 deforms and absorbs energy, further buffering the impact force and reducing the impact on the overall structure of the gripper. The hydraulic rod 3 can adjust the position of the connecting plate 4 appropriately during the collision according to the preset program or sensor feedback, assisting in controlling the buffering process. If the collision force comes from the bottom of the gripper, the buffer block 18 contacts the colliding object first. The buffer block 18 can play a buffering role, absorbing some energy and reducing the impact of the bottom collision on the gripper. When it is necessary to enhance the buffering effect, the adjusting nut 17 can be tightened, causing the adjusting screw 16 to drive the slide plate 15 to move, increasing the preload of the second spring 14. Conversely, when it is necessary to weaken the buffering effect, the adjusting nut 17 can be loosened to reduce the preload of the second spring 14.
[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A spring buffer structure for preventing a mechanical pinch of a jaw, characterized by, The device includes a fixed plate (1), a support frame (2) is fixedly connected to the upper end of the fixed plate (1), a hydraulic rod (3) is installed on the upper end of the support frame (2), a connecting plate (4) is fixedly connected to the driving end of the hydraulic rod (3), a plurality of guide rods (5) are fixedly connected to the lower end of the connecting plate (4), the outer wall of the guide rod (5) is slidably connected to the inside of the fixed plate (1), a spring (6) is sleeved on the upper side of the outer wall of the guide rod (5), the lower end of the spring (6) is fixedly connected to the upper end of the fixed plate (1), the lower end of the guide rod (5) is connected to a shaped rod (10) through a connecting assembly, the lower end of the shaped rod (10) is fixedly connected to a buffer box (11), and a gripper block (12) is connected to the inside of the buffer box (11) through a buffer assembly.
2. The spring cushion structure of the mechanical clamping jaw against collision according to claim 1, characterized in that: The connecting assembly includes a fixing lug (7) fixedly connected to the lower end of the guide rod (5), a connecting rod (8) rotatably connected to the middle of the fixing lug (7), and the lower end of the connecting rod (8) rotatably connected to the upper end of the irregular rod (10).
3. The spring cushion structure of mechanical clamping jaw against collision according to claim 1, characterized in that: The lower end of the fixed plate (1) is fixedly connected to a plurality of fixed blocks (9), and the lower end of the fixed blocks (9) is rotatably connected to the middle part of the irregular rod (10).
4. The spring cushion structure of mechanical clamping jaw against collision according to claim 1, characterized in that: The buffer assembly includes a sliding plate (15) that is slidably connected inside the buffer box (11). Multiple sets of springs (14) are fixedly connected to one end of the sliding plate (15), and the other end of the springs (14) is fixedly connected to the opposite end of the gripper block (12).
5. The spring cushion structure of mechanical clamping jaw against collision according to claim 4, characterized in that: An adjusting screw (16) is fixedly connected to one end of the sliding plate (15). The outer wall of the adjusting screw (16) is threadedly connected to one end of the buffer box (11). An adjusting nut (17) is threadedly connected to the outer wall of the adjusting screw (16).
6. The spring cushion structure of mechanical clamping jaw against collision according to claim 1, characterized in that: A rubber pad (13) is fixedly connected to one end of the gripper block (12).
7. The spring cushion structure of mechanical clamping jaw against collision according to claim 1, characterized in that: The lower end of the buffer box (11) is fixedly connected to a buffer block (18), which is made of plastic foam.