Short answer:Robotic soft grippers utilize the deformation of silicone chambers under pressure to achieve flexible grasping. The distribution of wall thickness, material hardness, air chamber structure, surface friction, and pressure control determine the gripping force, adaptability, and cycle life.
In what kinds of situations are these silicone parts suitable?
Clearly defining the actual application scenarios helps translate material, structural, and validation requirements into actionable technical specifications.
- Flexible Gripping of Food, Fruits, Vegetables, and Fragile Items
- Automatic Sorting and Assembly of Irregularly Shaped Parts
- Flexible End-Effectors for Human-Machine Collaboration Systems
Parameters to Confirm Before Selecting a Model
We recommend providing the following information before requesting a quote or ordering a sample to minimize the need for repeated prototyping and misunderstandings regarding specifications.
- Workpiece weight, shape, and surface friction
- Drive Pressure, Bending Angle, and Response Speed
- Number of Cycles, Cleaning, and Food Contact Requirements
Key Points in Structural Design
Structural dimensions, assembly relationships, and material elasticity must be evaluated together; simply increasing a single parameter generally does not directly improve reliability.
- Controlling the Bending Trajectory Using Gas Cavities and Wall Thickness Gradients
- The grip surface features a cleanable, slip-resistant texture
- Reinforce the joint area to prevent bursting and pipe detachment
Production and Quality Control
Consistency in mass production results from the combined control of material batches, mold condition, molding windows, and inspection methods.
- Controlling the shaping, bonding, and wall thickness uniformity of the inner cavity
- Eliminate air bubbles, material shortages, and internal channel blockages
- Use a jig to ensure the proper assembly position of multi-finger assemblies
Recommended Verification Items
Validation should be conducted using actual or equivalent operating conditions whenever possible, and functionality should be reconfirmed after aging or cycling.
- Plot pressure, displacement, and gripping force curves
- Assess the risk of dropping and damage for different workpieces
- Check for leaks and cracks after cyclic bending
Frequently Asked Questions
Does softer silicone make it easier to grip?
If it is too soft, it may not provide sufficient support and may reduce positioning accuracy.
Is it enough to just perform static grip strength tests?
That's not enough; we still need to verify the cycle, speed, and variations in the workpiece.
How do I provide information to suppliers?
Please provide 2D or 3D drawings, photos of samples, material and hardness specifications, operating environment, target quantity, acceptance criteria, and a list of compliance documents. Based on this information, Chengxin Silicone Rubber can evaluate the materials, molds, molding process, and validation plan.