CN111806104A

CN111806104A - Device and method for measuring residual amount of carbon tape roll

Info

Publication number: CN111806104A
Application number: CN202010760377.2A
Authority: CN
Inventors: 柳雄; 祝俊
Original assignee: Wuhan Jingchen Wisdom Logo Technology Co ltd
Current assignee: Wuhan Jingchen Wisdom Logo Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-10-23

Abstract

The invention relates to a device and a method for measuring the allowance of a carbon ribbon roll. The method divides the residual amount of the carbon ribbon into N gradients, records the rotating speed of the carbon ribbon roll corresponding to each gradient, and records the rotating speed into a table in the machine. In the printing process, the real-time speed of the carbon tape coil can be obtained through the code disc and the optical coupler, and then the corresponding carbon tape allowance can be obtained through table lookup.

Description

Device and method for measuring residual amount of carbon tape roll

Technical Field

The invention relates to a device and a method for measuring the allowance of a carbon ribbon roll.

Background

At present, the label printer cannot sense the residual amount of the carbon ribbon in the printing process. Usually, a user can only check the residual amount of the carbon ribbon in a visual inspection mode, and sometimes needs to stop to open the cover to check. If the carbon ribbon has been used up, not in time change, not only lead to unable printing sign, continue to print simultaneously and have the risk of disconnected area, also can cause the damage to the printer head of sign printer.

Disclosure of Invention

The invention aims to provide a device and a method for measuring the allowance of a carbon ribbon roll.

The technical scheme adopted by the invention for solving the technical problems is as follows: the device for measuring the surplus of the carbon tape roll comprises a coded disc fixed on a rotating shaft of the carbon tape roll, a plurality of gear teeth are uniformly arranged on the coded disc at intervals, an optical coupler is arranged at the position, opposite to the gear teeth, of the coded disc, and the optical coupler counts once when the coded disc rotates one gear tooth.

In the above scheme, the carbon ribbon roll is mounted on a supply reel, the code wheel is fixed at one end of the supply reel, an optical axis penetrates through the supply reel, and when the carbon ribbon roll rotates, the supply reel rotates along with the carbon ribbon roll, and the optical axis does not rotate.

In the above scheme, one end of the optical axis is fixed through the clamp spring.

In the above scheme, one end of the supply reel is sleeved with a damping spring, and the damping spring is in interference fit with the supply reel.

In the above scheme, the optocoupler is fixed on the support, the support and the optical axis are fixed on the vertical plate, and one end of the damping spring is fixed on the support.

The invention also provides a method for measuring the residual quantity of the carbon tape roll by using the measuring device, which is characterized in that the rotating speed of the carbon tape roll is measured by an optical coupler and a code disc, the residual quantity of the carbon tape is divided into N gradients, the rotating speed of the carbon tape roll corresponding to each gradient is recorded, and a statistical table of the corresponding relation between the residual quantity of the carbon tape and the rotating speed of the carbon tape roll is obtained;

and when the carbon tape is normally printed, measuring the real-time rotating speed of the carbon tape roll through the optical coupler and the coded disc, and inquiring the carbon tape allowance corresponding to the real-time rotating speed of the carbon tape roll by contrasting the statistical table.

In the method, when the residual amount of the carbon ribbon is less than 10%, the printing machine gives an alarm to remind the user of adding the carbon ribbon.

The device and the method for measuring the allowance of the carbon ribbon roll have the following beneficial effects that:

in the printing process, when the carbon ribbon moved, can drive code wheel synchronous rotation, and at the printing in-process, the velocity of motion of carbon ribbon was invariable, consequently along with going on of printing, the carbon ribbon consumed gradually, and the radius of carbon ribbon book can diminish gradually, because the linear velocity of export carbon ribbon on the carbon ribbon book is invariable, rolls up the back that the radius diminishes when the carbon ribbon, and the rotational speed of carbon ribbon book can progressively improve.

The method divides the residual amount of the carbon ribbon into N gradients, records the rotating speed of the carbon ribbon roll corresponding to each gradient, and records the rotating speed into a table in the machine. In the printing process, the real-time speed of the carbon tape coil can be obtained through the code disc and the optical coupler, and then the corresponding carbon tape allowance can be obtained through table lookup.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural diagram of a device for measuring the residual amount of a carbon ribbon roll according to the present invention;

fig. 2 is an exploded view of a measuring apparatus for measuring the amount of remaining ribbon roll according to the present invention;

FIG. 3 is a side view of FIG. 1;

fig. 4 is a schematic diagram showing a change in the use state of the carbon tape roll.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, the device for measuring the residual amount of the carbon tape roll 1 comprises a coded disc 7 fixed on a rotating shaft of the carbon tape roll 1, a plurality of gear teeth are uniformly arranged on the coded disc 7 at intervals, an optical coupler 3 is arranged at the position opposite to the gear teeth, and the optical coupler 3 counts once when the coded disc 7 rotates one gear tooth. In the embodiment, the code wheel 7 is provided with a gap every 20 degrees, so that the code wheel 7 with 18 gaps is formed, namely, the pitch angle of the code wheel 7 is 20 degrees.

The carbon tape roll 1 is arranged on a rubber roller 9 of the supply scroll 2, and the rubber roller 9 is provided with an edge corresponding to the shape of the cavity in the middle of the carbon tape roll 1. The code wheel 7 is fixed at one end of the supply scroll 2, the optical axis 6 is arranged in the supply scroll 2 in a penetrating way, when the carbon tape roll 1 rotates, the supply scroll 2 rotates along with the carbon tape roll 1, and the optical axis 6 does not rotate. One end of the optical axis 6 is fixed by a clamp spring 8.

One end of the supply reel 2 is sleeved with a damping spring 5, and the damping spring 5 is in interference fit with the supply reel 2. The damping of damping spring 5 plays the effect that prevents the carbon ribbon and rotate at will, and in the printing process, damping spring 5 can not influence the rotation of carbon ribbon roll 1. In this embodiment, opto-coupler 3 is fixed on support 4, and support 4 and optical axis 6 are fixed on the riser, and damping spring 5's one end is fixed on support 4. The vertical plate is a fixed part in the printing machine.

As shown in fig. 4, when the ribbon is gradually consumed, the radius R of the ribbon roll 1 becomes smaller, and since the ribbon linear velocity V is kept constant, V ═ 2 π Rn, R becomes smaller, and the rotation speed n of the ribbon roll 1 gradually increases. The rotating speed n of the carbon tape coil 1 is measured through the optical coupler 3 and the coded disc 7. Every time the coded disc 7 rotates a tooth, the optical coupler 3 counts once, and when the rotating speed is faster and faster, the number of teeth rotated in the corresponding unit time can be increased, and the number of teeth z rotated correspondingly is measured within 5 seconds of sampling time.

The method for measuring the residual amount of the carbon tape roll 1 divides the residual amount of the carbon tape into N gradients, records the rotating speed of the carbon tape roll 1 corresponding to each gradient, obtains a statistical table of the corresponding relation between the residual amount of the carbon tape and the rotating speed of the carbon tape roll 1, and obtains the table 1 by testing for many times and averaging in the embodiment:

TABLE 1 statistical table of correspondence between residual amount of carbon tape and rotation speed of carbon tape 1

When normally printing, the optical coupler 3 and the code wheel 7 are used for measuring the real-time rotating speed of the carbon tape coil 1, and the corresponding carbon tape allowance is inquired by referring to the table 1. And when the residual amount of the carbon ribbon is less than 10%, the printing machine gives an alarm to remind of adding the carbon ribbon.

The corresponding relation between the residual amount of the carbon tape and the rotating speed of the carbon tape roll 1 can be stored in a printing machine, and the measuring of the rotating speed and the finding of the corresponding residual amount of the carbon tape can be realized through a computer program.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The device for measuring the surplus of the carbon ribbon roll is characterized by comprising a coded disc fixed on a rotating shaft of the carbon ribbon roll, a plurality of gear teeth are uniformly arranged on the coded disc at intervals, an optical coupler is arranged at the position, opposite to the gear teeth, of the coded disc, and the optical coupler counts once when the coded disc rotates one gear tooth.

2. The apparatus of claim 1, wherein the carbon tape roll is mounted on a supply reel, the code wheel is fixed to one end of the supply reel, an optical axis is formed inside the supply reel, and when the carbon tape roll rotates, the supply reel rotates with the carbon tape roll, and the optical axis does not rotate.

3. The device and the method for measuring the surplus of the carbon ribbon roll according to claim 2, wherein one end of the optical axis is fixed through a clamp spring.

4. The apparatus and method for measuring the amount of ribbon remaining on the ribbon supply roll according to claim 2, wherein a damping spring is sleeved on one end of the supply roll, and the damping spring is in interference fit with the supply roll.

5. The device and the method for measuring the surplus of the carbon ribbon roll according to claim 4, wherein the optical coupler is fixed on a support, the support and the optical axis are fixed on a vertical plate, and one end of the damping spring is fixed on the support.

6. A method for measuring the residual quantity of a carbon ribbon roll by using the measuring device of claim 1 is characterized in that the rotating speed of the carbon ribbon roll is measured by an optical coupler and a code disc, the residual quantity of the carbon ribbon is divided into N gradients, the rotating speed of the carbon ribbon roll corresponding to each gradient is recorded, and a statistical table of the corresponding relation between the residual quantity of the carbon ribbon and the rotating speed of the carbon ribbon roll is obtained;

7. The method for measuring the residual quantity of the carbon ribbon roll as claimed in claim 7, wherein when the residual quantity of the carbon ribbon is less than 10%, the printing machine gives an alarm to remind the user of adding the carbon ribbon.