Case: Safety protection upgrade in die-casting workshop
Background
Due to the frequent approach of operators to high-pressure die-casting machines for mold debugging or parts removal, a die-casting workshop is subject to risks such as mechanical pinching and molten metal splashing. In order to comply with the requirements of "keep the operation area unobstructed and strictly prohibit personnel from entering the dangerous area" in the "Safety Operation Procedures for Die-casting Machines", the workshop introduced a safety carpet system.
Solution
Safety protection upgrade in die-casting workshop
Perimeter control
A safety carpet with customized dimensions (1200×1800mm) is laid within 1.5 meters around the die-casting machine to form a physical isolation area. The carpet is made of heavy-duty NBR banana material, with a dynamic load of 500kg and a static weighing of 800kg, and can withstand wheel crushing within this range.
Linkage control
The safety carpet is linked to the die-casting machine controller in real time. When a person accidentally steps on the carpet, the carpet immediately outputs a stop signal to the safety relay, which cuts off the power supply of the equipment within 0.5 seconds, forcing the closing of the mold, injection and other actions to avoid pinching or splashing injuries.
Safety Enhancement
Aluminum alloy strips are installed on the edge of the carpet to prevent displacement; combined with the workshop safety door limit switch, double insurance protection is achieved.
Effect
Accident rate reduced by 95%: effectively intercepting personnel from mistakenly entering high-risk areas;
Production efficiency improved: reducing equipment damage caused by emergency stops, and maintenance costs reduced by 30%;
Comply with safety standards: passed ISO 13856-1 pressure-sensitive protection device certification.
Case basis:
Technical principle: pressure-sensitive trigger mechanism;
Application scenario: perimeter protection of die-casting machines;
Effect verification: reduce the risk of downtime.
Safety mat parameters
Download the product brochure to view all parameters
The safety carpet protection system can detect whether there are people in the laying area within a certain period of time, and prevent persons in the area from possible personal injury and danger caused by the movement of the machine. Provide necessary safety protection for personnel working in hazardous areas
PSM4- A * B - C D E F - G - H
| A | B | C | D | E | F | G | H | |
|
Model |
Width | Length | Number of splices |
Description of size |
Color/material configuration |
Resistor configuration |
Cable length |
Controller |
|
PSM4 (default) |
L2:Safety pad width |
L1: safety pad length | L1:Not writing |
A: After installing the outer frame |
B: Black rubber surface (default) |
K: 4-core cable (default) |
3m: Standard configuration. Not writing (default) |
SRC: safety relay |
|
PSM6 |
2: Splice 2 pieces |
F: Net carpet size, additional frame require |
Y: Yellow PVC (pattern) |
KF: 2 sets of 2 cores |
6m: 6 meters cable |
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| PSM11 |
3: Splice 3 pieces |
P: Net carpet size, without outer frame |
H: Red PVC (pattern) |
R: With terminal resistor (8.2KΩ) |
8m: 8 meters cable |
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| 4: Splice 4 pieces |
S: Customized type |
Safety pad parameters
|
safety mat |
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Adapt to detection range |
It is suitable for inspection personnel in general working conditions and cannot withstand vehicle crushing and heavy object impact. |
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Recommended use occasions |
Suitable for safety protection in personnel operating areas; PSM4 - regular model, the hard board is more wear-resistant and durable, and is suitable for one side larger than 400mm (the default is PSM4 without instructions); PSM6 - Soft pad, more responsive, non-bendable, suitable for small sizes; PSM11 - soft padded, thinner, non-bendable, height restricted for narrow locations; |
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Applicable industries |
Paper industry, electronics industry, automobile welding production lines, forging production lines, general industrial applications and automatic palletizers and other light and heavy industrial applications |
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Dimensions (net mat) |
Customized width range: 200mm-1000mm Customized length range: 200mm-2000mm |
Surface Material-PSM4 |
PSM4-rubber (black particles for anti-skid) or PVC (red and yellow patterns for anti-skid); |
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Edge sealing form |
Yellow aluminum edge sealing |
Surface material-PSM6, PSM11 |
Hard sole |
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Maximum allowable load (8 hours) |
≤ 400N/cm2 |
Mechanical life PSM4 |
＞1,000,000 |
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Maximum humidity (23 degrees) |
95% (condensation) |
Mechanical life PSM6 |
＞800,000 |
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Ambient temperature (usage environment) |
-5℃ to 55℃ (no icing or condensation) |
Mechanical life PSM11 |
＞700,000 |
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Ambient temperature (storage environment) |
-10℃ to 60℃ |
Cable |
4-core*0.32² shielded cable, 3M standard (can be customized and lengthened) |
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Triggering force |
PSM4-Adult 30KG |
PSM6/11-Adult 20KG |
Output type |
2NO(passive normally open) |
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Protection level |
IP65 |
Series connection |
Series connection of less than 5/6 blocks is allowed (or no more than 4-5 square meters) |
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Thickness |
PSM4-14mm |
PSM6-15mm |
PSM11-11mm |
Controller maximum voltage |
DC24V (using 0V control) |
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Response time |
＜30ms |
Switching current\voltage |
Max.100mA \5V |
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Weight |
About 20kg/m² |
Allowed single block area |
1.5m² |
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Conform to Standard application |
The non-isolated safety protection system composed of safety mat and SRC106 safety relay meets the following standards.EN1760-1 ISO13856-2 EN62061 EN ISO13849-1 EN60204-1 EN/IEC 61496-1 |
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