Unlock instant, AI-driven research and patent intelligence for your innovation.

A Method of Improving the Playing Quality of Steel Wire Recorder

A tape recorder and steel wire technology, applied in recording/reproduction/deletion methods, digital recording, mechanical diameter measurement, etc., can solve problems such as low spindle speed, expensive frequency converter, slow steel wire speed, etc., to ensure playback quality and sampling quality, improved playback quality, and easy-to-promote effects

Active Publication Date: 2021-01-12
上海文化广播影视集团有限公司 +2
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing wire recorders are not suitable for the current AC voltage and frequency. The power supply voltage of residential electricity in China is 220V, the industrial power supply voltage is 380V, and the frequency of power supply current is 50Hz. Most of the existing wire recorders are rated to work The voltage is 110V, and the rated current frequency is 60Hz. If the connected voltage is higher than the rated working voltage of the wire recorder, the wire recorder will be damaged; The speed is too low; if the frequency of the connected current is lower than the rated current frequency of the wire recorder, it will cause the spindle speed of the wire recorder to slow down, which will cause the speed of the wire to pass through the magnetic head to be too slow, which will affect the quality of playback and sampling; if the connected If the current frequency is higher than the rated current frequency of the wire recorder, it will cause the spindle speed of the wire recorder to be too fast or damaged, and it will also affect the playback quality and sampling quality
[0005] The power supply voltage can be converted by a transformer, and the frequency of the power supply current can be converted by a frequency converter, but the frequency converter is expensive, which is not conducive to the smooth development and implementation of the rescue, protection and digitization of steel wire recording materials; it is also not conducive to the promotion of the use of steel wire recorder

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Method of Improving the Playing Quality of Steel Wire Recorder
  • A Method of Improving the Playing Quality of Steel Wire Recorder
  • A Method of Improving the Playing Quality of Steel Wire Recorder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Such as figure 1 As shown, a kind of method for improving the playback quality of steel wire recorder provided by the present embodiment comprises the following steps:

[0066] Step 1: Open the panel of the wire recorder, the model of the wire recorder is 288-1R, the brand is Webster-Chicago, the power requirement is 120V, 60Hz, and the wire supply reel 1, main shaft 2, drive reel 3 and winding wire of the wire recorder are exposed Disc 4; the main shaft 2 drives the drive disc 3 to rotate, and the drive disc 3 drives the reel 4 to rotate, such as figure 2 shown;

[0067] Step 2: Use a vernier caliper to measure the outer diameter d of the main shaft 2 where the main shaft 2 contacts the drive disc 3 1 equal to 6mm;

[0068] Step 3: Determine the outer diameter d required for spindle 2 2 ;d 2 The determination method includes the following steps:

[0069] Step 3.1: Determine the rated operating current frequency H of the wire recorder 1 and supply current frequ...

Embodiment 2

[0086] On the basis of Embodiment 1, step 4 may be replaced by the following steps:

[0087] Step 4.2.1: If d 2 less than d 1 , go to step 4.2.6; otherwise go to step 4.2.2;

[0088] Step 4.2.2: Determine the wall thickness S of the high temperature resistant tape 2 , high temperature resistant tape has and only one side with high temperature resistant adhesive;

[0089] Step 4.2.3: Determine the number of layers N of high temperature resistant tape required 2 ;Number of layers N 2 Determined according to the following formula:

[0090]

[0091] Step 4.2.4: Wind N on spindle 2 2 A layer of high-temperature resistant tape, the winding range covers the contact between the main shaft 2 and the drive disc 3; note that the outer diameter of the main shaft 2 after winding is continuous.

[0092] Step 4.2.5: Wipe the outer surface of the outermost heat-resistant tape;

[0093] Step 4.2.6: End.

Embodiment 3

[0095] On the basis of Embodiment 1, step 4 may be replaced by the following steps:

[0096] Step 4.3.1: If d 2 greater than d 1 and d 2 with d 1 If the difference is greater than 4mm, go to step 4.3.2; otherwise go to step 4.3.5;

[0097] Step 4.3.2: Process the hollow sleeve, the outer diameter of which is equal to d 2 , the inner diameter of the sleeve is equal to d 1 ; The material of the sleeve is metal or hard plastic, and the present embodiment is preferably metal;

[0098] Step 4.3.3: Insert the sleeve into the main shaft 2, and the insertion range covers the contact between the main shaft 2 and the drive disc 3;

[0099] Step 4.3.4: Fix the sleeve; the method of fixing the sleeve is welding or bonding. In this embodiment, bonding is preferred, and the bonding glue is metal glue HY-303;

[0100] Step 4.3.5: End.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for improving the playback quality of a steel wire recorder, and relates to the field of steel wire recording digital conversion, and the method comprises the following steps: 1, opening a panel of the steel wire recorder, and exposing a wire supply disc, a main shaft, a driving disc and a winding disc of the steel wire recorder; 2, using a vernier caliper for measuring the outer diameter d1 of the main shaft at the contact position of the main shaft and the driving disc; 3, determining the outer diameter d2 required by the main shaft; 4, adjusting the outer diameter of the main shaft at the contact position of the main shaft and the driving disc to d2; 5, installing a panel of the steel wire recorder; and 6, testing the steel wire recorder, and carrying out playback sampling comparison. The method for improving the playback quality of the steel wire recorder is low in cost and easy to popularize, the existing steel wire recorder can normally work underthe existing power supply current frequency without adopting a frequency converter, and the playback quality and the sampling quality of the steel wire recorder are ensured.

Description

technical field [0001] The invention relates to the field of digital transformation of steel wire recording, and relates to a method for improving the playback quality of a steel wire recorder. Background technique [0002] In 1877, Edison invented the phonograph, which created a miracle in the history of mankind, allowing sound to be stored and reproduced; in 1898, the Danish scientist Paulson developed the first magnetic tape recorder, and exhibited Paulson's invention at the Paris Exposition in 1900. In 1937, Marvin invented an improved steel wire recorder, which has the characteristics of lifelike sound and beautiful sound quality. [0003] Steel wire recording used to play an important role in the field of audio archives in our country. Many audio files are still kept in steel wire tapes. Because of the long time and the aging of the steel wire itself, most of the steel wire tapes are currently on the verge of urgent rescue. There is an urgent need to digitize it. In t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/09G01B5/08
CPCG01B5/08G11B5/09G11B2005/0005
Inventor 霍秋林毛坚菁龚明肖定斌王劲松黄钢许舒亚袁征房大磊孙宁
Owner 上海文化广播影视集团有限公司