Furniture impact testing machine

Abstract

The present invention provides a furniture impact testing machine. The furniture impact testing machine comprises a fixing fixture, columns, lifting mechanisms, a lifting beam, an impact device, and the like. The impact device comprises an impact bag, weights or steel balls or sand, a fixed tray, a force value sensor, an electromagnetic chuck, an electromagnet block or a clutch, a connecting rod,a cushion rubber, a connecting block, a buffer, a guide rod, an electric cylinder, a floating joint, a reducer, a lifting servo motor, and the like. According to the furniture impact testing machine provided by the present invention, the lifting beam can be lifted and lowered by the lifting mechanism in the column, and the test height of the impact device can be adjusted with the lifting and lowering of the lifting beam, so that the furniture impact testing machine can be applicable to tests on test workpieces of different heights, and has high versatility; and by setting the impact device, animpact test can be performed on the test workpiece, and when the impact bag falls to the surface of the test workpiece and the force value sensor senses that the pressure is greater than 0, the lifting servo motor in the impact device can immediately stop working according to the signal sensed by the force value sensor, so that the impact bag can be prevented from damaging the test workpiece.

Description

technical field [0001] The invention relates to the field of testing equipment, in particular to a furniture impact testing machine capable of performing impact tests on office chairs, sofas, tables and other furniture. Background technique [0002] The traditional furniture testing machine does not have the function of drop impact test, such as the Chinese invention patent with the patent number "201010149407.2" and the patent name "office furniture drop test bench". Later, some new furniture testing machines appeared on the market, such as The Chinese patent with the announcement number "CN203858088U" and the patent name "A High-Precision Furniture Drop-Punch Tester" tests the pressure resistance, endurance and firmness of the produced furniture such as sofas, office chairs and tables. Such tests generally use the cylinder to lift the impact object to and fro to carry out the impact test on the furniture. The cylinder is used as the power source to carry out the lifting mo...

AI Technical Summary

Problems solved by technology

[0002] The traditional furniture testing machine does not have the function of drop impact test, such as the Chinese invention patent with the patent number "201010149407.2" and the patent name "office furniture drop test bench". Later, some new furniture testing machines appeared on the market, such as The Chinese patent with the announcement number "CN203858088U" and the patent name "A High-Precision Furniture Drop-Punch Tester" tests the pressure resistance, endurance and firmness of the produced furniture such as sofas, office chairs and tables. Such tests generally use the cylinder to lift the impact object to and fro to carry out the impact test on the furniture. The cylinder is used as the power source to carry out the lifting movement, which has the advantages of low operation accuracy, fixed lifting height and fixed stamping force of the same type of cylinder. Insufficient variation, not only makes it difficult to achieve accurate testing, but also cannot be suitable for testing products with different punching forces and heights. When it needs to test furniture with different punching forces, it needs to replace different types of cylinders. Not only does it cause very inconvenient operation for the user and increase the cost of the user to purchase the cylinder, but it also has the problem of poor versatility; and when the cylinder is used as the power source for testing, when the pressure resistance of the furniture is not up to standard, it often occurs during the test. The impact object driven by the cylinder is damaged, and it cannot automatically identify the unqualified furniture inspection and stop the movement, resulting in frequent secondary damage to the test product, making it more difficult to repair the unqualified product, and eventually leading to a high scrap rate of the product , at the same time, it cannot accurately provide effective data support to scientific research institutions and enterprises, thereby increasing R&D costs and production costs of enterprises

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