Riveting machine protection patent

Operation principle of intelligent safety protection system of rivet machine/spot welding machine

The rivet intelligent safety protection device is composed of a complete system, including mechanical control, independent control box, multi-function sensor, multiple adjustable anti-finger probes, etc.;

Protection principle

Place the processed product, set the safety protection distance, fix the probe, start the equipment to perform the processing operation, when the finger is placed on the processed part, the descending probe is blocked and detected, the probe immediately stops the foot switch signal and the rivet machine cannot descend, when When the finger leaves, the foot switch is activated again, and the probe cannot detect the obstacle; the equipment rivet machine immediately performs rivet processing to protect the safety of the operator's finger.

The main pieces include

The safety box controller is respectively connected to the driving device, the limit device and the foot switch signal of the rivet machine, and the controller sends the foot switch to the foot switch when the protection component falls to a preset safe position Start signal; the controller controls the driving device to move down within the sensing range according to the start signal. When the protective component falls to the preset safe position, the controller sends a start signal to the foot switch to turn on the rivet machine. The rivet machine can be opened by the foot switch only when there is no obstacle in the free-falling stroke of the protective component, so as to avoid injury to the operator's fingers and better protect the safety of the personnel.

Detection probe

The protective component connector can be customized according to customer needs to ensure that it meets product and site requirements. A variety of finger probes can meet the needs of different equipment, and both rivet machines and welding machines can be applied;

Support frame, installed with the rivet machine; drive device, installed on the support frame; limit device, installed on the support frame, used to limit the movement range of the drive device; protective component, movably installed on the support frame , And a part of the protection component extends below the punch of the rivet machine, an auxiliary connector, one end is fixedly connected to the driving device, and the other end is movably connected to the protection component;

On-site use cases and safety design considerations

The design should properly take into account the machine's foreseeable full life cycle operation and the foreseeable environment of the machine, and poor consideration can lead to dangerous conditions that hinder the operation of the machine, which in turn leads to the artificial discarding of the safety products provided, so that the operation People are exposed to greater risks.

The foreseeable aspects of the existing operating protective cover are properly considered at the design stage to ensure that the design and manufacturing of the protective cover itself does not create new dangers.

Shock and ejection resistance

The design of the protective cover should be able to withstand and block as much as possible. The selected observation board material should be able to withstand the mass and speed of the ejected object or material, and can withstand static and dynamic forces (such as pressure and impact) according to the risk assessment. The characteristics, strength, fixing method and aging degree of the materials used.

Rigidity: The selection and arrangement of probe posts, installation and filling materials should form a structure with rigidity and stability. And the weight of the pneumatic device should be slow to the gravity standard, and no secondary injury can be caused

safe distance

It is used to prevent the finger entering the danger zone from being touched by the finger during the descent of the probe of the starting device to prevent various parts of the human body from touching the danger zone. The interlocking movable protective cover should also meet the safety distance of GB/T 19876.

Control of entering the danger zone

The design and positioning shall be such that when there are people's hands/fingers left in the danger zone during normal operation, the equipment is in a state of shutting down and cannot be started. If this is not feasible, other measures should be taken to prevent the detection of persons in the danger zone. See GB/T 15706-2012, 6.3.3.2.3.

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