Hydraulic Overload Pump Safety in Mechanical Power Press
As our consistent efforts to sharing depth technical knowledge of Mechanical Power Presses, here today we are sharing article on Hydraulic Overload Safety Pump also known as HOLP.
Hydraulic Overload Safety system that senses an while mechanical press overload condition it will releases hydraulic pressure in a Ball Seat fitted with Ball Screw, in that way allowing the slide to be pushed up by the overload force. The main purpose of the Hydraulic Overload Pump is to prevent damage to the press in the result of overload. Nowadays all mechanical presses are designed and attached with Hydraulic Overload Pump.
Advantages of Hydraulic Overload Safety Pump:
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Stop Press operation immediately and protect press from major breakdown
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Protect Die during overload situation
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Protect Components
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Easily ejection component from die
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Just single Reset Push Button and resume press operation, save time and increase productivity
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Extend Tool Life also indicate in case tool needs to refurbish
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Reduce connection clearances
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Alert during excessive off-center loads
Why do you need Hydraulic Overload Pump in Mechanical Press?
When you buy Press is a major long-term investment and frequently is run by someone without general training. Overload can take place in the course of accidental error or by disregarded alteration in the tool or material. Without Hydraulic Overload Safety Pump, press overload can result in damage to the press structure, bearings, gears or clutch. Frequently overload situation in press results in reduced press accuracy and service life, also repairing of a broken press is costly and the loss of production can reduce profits or even cost you a contract. The addition of an efficient Hydraulic Overload Safety Pump in the press design provides an automatic protection against situation of press overload that helps to maintain press accuracy for long life.
Moreover, just one reset push button you can release a press that has been stuck at the bottom of the stroke. This can take place simply incase shut height setting is incorrect of tool.
Reasons of Press Overload:
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Improper Shut Height Settings
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Component require too much tonnage than capacity of press
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Slugs or foreign material lodging in the die
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Misfeed or fold of the material
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Wear in a Tool
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Improper positioning of a Tool
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Using incorrect material
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Changes in material hardness or thickness
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Results of overload in absence of Hydraulic Overload Pump
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Without Hydraulic Overload Safety Pump, while overload situation occur press at exhausted end. This can results in stretched tie-rod or upright, bend crank or eccentric shaft, damage in bearing, wrecked connection pin or adjustment screw, crack in bed, slide or crown, or a slipping or damaged clutch. In case press survives overload without breaking, its clearances can increase and shatter its parallelism. Also, the Gibs can be damaged by elevate of the slide.
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