Thermosensitive dot printing timer for senior high school science students

Abstract

The invention discloses a thermosensitive dot printing timer for senior high school science students. The thermosensitive dot printing timer comprises a fixed seat, a damping pad and a bottom plate, wherein the damping pad is arranged on the lower side of the fixed seat, and the bottom plate is arranged on the side, away from the damping pad, of the fixed seat. The thermosensitive dot printing timer has the beneficial effects that through the arrangement of a damping spring and the damping pad, vibration of a dot printer during dot printing can be greatly weakened, the influence of the vibration on the dot printing of paper tapes is relieved, and the timing accuracy is ensured; through the arrangement of a switch, after being connected with a power supply, the dot printing timer is controlled through the switch, so that the simplicity and convenience of operation are improved; and through the arrangement of an ink adding box, printing colors of copy paper can be kept sufficient, so that printed dots can be clear and accurate, and the timing accuracy is guaranteed.

Description

technical field [0001] The invention relates to the field of experimental teaching aids, in particular to a heat-sensitive dotting timer for high school science students. Background technique [0002] The dot timer is a tool for measuring time. It is widely used in the field of school physics teaching. When the paper tape driven by the moving object passes through the dot timer, the dots on the paper tape record the time of the object's movement. The points on the tape also show the position of the object at different times. By studying the intervals between the points on the tape, the frequency of the object's motion can be analyzed, and the relevant physical data can be obtained. However, there are some deficiencies in the existing dotting timers during use, which will generate larger vibrations in use, which will affect the stable operation of the dotting timers, resulting in inaccurate measured data, and the existing dotting timers After connecting the power cord, the p...

AI Technical Summary

Problems solved by technology

However, there are some deficiencies in the existing dotting timers during use, which will generate larger vibrations in use, which will affect the stable operation of the dotting timers, resulting in inaccurate measured data, and the existing dotting timers After connecting the power cord, the printer needs to control the dotting through an external switch, which is very inconvenient to operate and affects the dot effect. At the same time, the copy color of the carbon paper will be reduced after a long time, making the dot effect poor, and the color of the dot is not clear enough, which affects the movement of the object. Time measurement, so a new type of device is needed to solve the existing problem

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