Mechanical pencil fatigue tester
Fix the mechanical pencils on the pencil holder with their tips facing down, adjust the distance of the indenter, adjust the clamp, start the instrument, and perform a fatigue test on the mechanical pencils at a speed of 100 times/minute.
Pencil Eraser tip tensile tester
This instrument is specially designed to detect the tensile strength of the pencil tip
Pencil Lead slip tester
This instrument tests the pencil lead by loading a certain force with a certain thimble for 5 seconds, and observes whether the pencil lead moves in the pencil barrel.
Pencil Lead concentration meter
This instrument is used to measure the concentration of pencil lead. That is to measure the reflected optical density of the scratch mark of the lead on the designated sample paper (use the symbol “d” to represent the reflected optical density: d=Lg1/R450, where R450 is the diffuse reflection brightness factor of the sample for blue light with a wavelength of 450nm, that is, under certain lighting. Under certain conditions, in a given direction, the ratio of the sample’s reflected light brightness to the ideal diffuse reflected light brightness under the same conditions)
Fully automatic cross striper
This instrument is to install the drawing paper on the smooth metal ring plate of the cross-scribing instrument, then insert the pencil into the pencil clip and tighten it, adjust the clamping position to keep the mechanical rod balanced, so that the lead can mark the drawing paper to ( Draw lines at a speed of 45-55) mm/s, draw 15 lines at a time, each line length is 60mm, and the spacing is 1.5mm. After drawing 15 lines each time, rotate 45° in sequence and continue to draw lines, a total of four times. . Take a square with a side length of (25±1) mm in the middle of the stitch as the sample paper.
Pencil Lead slip meter
This instrument adds a 400g weight to the pencil clip, adjusts the counter to zero, starts the motor, and when the lead rotates and rubs 100 times on the copper plate, turn on the recorder and start drawing and recording. After the recorder rotates for one cycle, Turn the motor off.
Pencil Lead abrasion meter
This instrument is suitable for testing the wear resistance of pencil lead. The motor drives the drum to rotate, and the digital display touch screen displays the number of times. After reaching the set number of times, it automatically stops and the wear value is read directly on the dial indicator.
Pencil Lead microscopic hardness tester
This instrument is used to test the hardness of pencil lead. It is equipped with a special fixture and is developed according to the testing requirements for lead hardness in pencil standards. It can directly test the Knoop hardness value of the lead.
Pencil Lead micro force strength meter
This instrument is used for the following tests： Pencil lead tip stress test: A sharpened pencil is installed on a 45-degree holder. The force on the lead tip when it is damaged; Pencil lead bending strength test: Place the lead on a "V" shaped bracket, place a knife edge above the bracket, and test the force value when the lead breaks.
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Pencil Lead Continuous Circle Writing Tester
This machine is to load the pencil or refill with a 300g load (or set it yourself), so that the pen and the writing paper are directly facing at an angle of 90 °, and the circle is drawn to the set number of meters at a certain speed, and check whether the stitches meet the requirements specified in the product standard, and whether the wear value shown on the dial gauge is qualified.
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Digital dynamometer
The digital display push-pull force meter is a universal portable push-pull load testing instrument. It is suitable for push-pull load testing, plug-in force testing, damage testing, etc. of various products. It can be combined with various instruments and fixtures to form small experiments for different purposes. instrument.
Eraser Tensile Tester
This machine is specially used to test the tensile strength of eraser on pencil.
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