CNS-1083 luggage zipper reciprocating fatigue testing machine

Local parameter setting and operation instructions

[Purpose]

Test whether various zippers can withstand the specified number of reciprocating pulling operations under the action of horizontal and vertical tension.

Compliant with standards: CNS-1083, QB/T2171~2173

During the experiment, the machine drives the zipper slider at a constant speed, making 30 reciprocating movements per minute until the specified number of times is reached. The condition of the test sample is checked to determine the product performance.

Reciprocal stroke: 75mm;

Horizontal clamping device width: 25mm

Total weight of longitudinal clamping device: 0.28-0.34kg;

Distance between two clamping devices: 6.35mm;

Counter: electronic 0~999999;

Volume: 28 × 55 × 66 (W × D × H);

Weight: approximately 50kg;

Operating instructions

1. Prepare the test piece:

1. Customers make test specimens according to their own requirements (According to standards)

2. Preparation for the experiment:

1. Determine before testing:

1.1 Confirm whether the power supply meets the specified requirements

1.2 Place the test piece on the workbench and clamp it properly

III. Experimental Steps:

1. 1. Plug in the power supply (AC220V, 3A);

2. 2. Turn on the power switch

3. 3. Set the required number of experiments on the counter

4. Schematic diagram of operation panel

POWER：Power button, turn on/off the power of the instrument

RUN：start key

STOP：stop key

CLR：Reset key to reset the value to zero

SET：Set key, transition from normal state to modified state, modify test times, and finally confirm and return to normal state.

↑ Numerical increment key

↓ Numerical decrement key

← Left Shift Key

→ Right shift key

Fig 3

As shown in the picture:

SP：test speed

TM：The set number of tests

ADD TIMES：Actual number of tests

Turn on the power and pressSETKey, display window as shown in the following figure

Figure 4

Press the ↑↓ keys again to change the counting method, where O is positive and 1 is negative

Press the ←→ key again to enter the set number of times to modify, move to the corresponding position that needs to be modified, and then use the ↑↓ keys to increase or decrease. After setting the required number of tests, pressSETPress the key to exit the modification state. After setting, pressRUNThe key starts the test, and the instrument automatically stops after completing the set number of movements. If you need to stop halfway, pressSTOPThe key. Press againRUNContinue testing with the key. Before conducting the next test, the following steps should be takenCLRPress the key to reset the record to zero.

1. 4. When the number of experiments reaches the set value, the machine stops

2. 5. Repeat the test for the next product or turn off the power

At the end of the test, record the test results

Preparation for the experiment:

1. Set the governor switch to the lowest position

2. Turn on the power switch and adjust the speed regulator to an appropriate speed of 30 times per minute.

3. According to the set number of items, the entire machine is in a testing state after reaching the specified number of times

4. Fix the test sample in the testing fixture

Test method for load pull times

Testing equipment and fixtures

The testing equipment consists of a set of fixtures, a reciprocating transmission system, and a display system.

The instrument has a reciprocating frequency of 30 times/min, a stroke of 75 mm, and an opening and closing angle of 30 degrees and 60 degrees

Test range: Zipper specifications within 3.5m m-12mm

The test fixture has a horizontal width of 25mm and a vertical width of 10mm, with a clamping surface tooth profile angle of 60 ° and a pitch of 1.5mm

Testing methods and steps

Take a zipper sample with a length of 250 mm or more, and wipe the front and back surfaces twice with paraffin wax.

Check the testing machine, keep the pull tab fixture at the lower limit, clamp the zipper on the five fixed points, and pull the tab

Fixed (see Figure 12)

testing procedure

First, roughly fix the tail end (bottom end) of the zipper onto the fixing point A (pull tab inward)

Fix the pull tab onto the pull tab fixture

Fix the front end (top end) of the zipper at points D and E:

Release the fixing point A, pull up the end of the zipper so that the fixing pin falls in the middle of the balance plate hole, and then clamp point A (at this point, visually inspect points D and E on the same horizontal line)

Release the horizontal clamping blocks B and C, and insert the cloth strips on both sides of the zipper tape into the B and C fixtures for clamping. The distance between the clamping mouth and the tooth foot is about

5 nun， At this point, the five fixed points have been fixed;

Set the zipper to the upper limit, release the zipper clamp, and visually inspect whether the zipper remains straight. If it does not meet the requirements, readjust until all clamping is completed;

Zippers of different specifications should be loaded horizontally and vertically according to the specified requirements (see Table 5)

5. After the test is completed, turn off the power and remove the test product. After rubbing, clean the machine

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