CN209851822U - Structure for detecting liquid level of ink box - Google Patents

Abstract

The utility model discloses a structure for detecting the liquid level of an ink box, which comprises an ink box and a plurality of detection columns; the plurality of detection columns are arranged on the side wall of the ink box at intervals along the longitudinal direction of the ink box; the detection column comprises a stainless steel nut, a wiring terminal, a lead and a fixing screw, the stainless steel nut is used as an insert to be molded on the side wall of the ink box, the wiring terminal is fixedly connected to the stainless steel nut in a threaded mode through the fixing screw, and the lead is fixedly connected to the wiring terminal. Because the utility model discloses well a plurality of detection posts are installed on the lateral wall of ink horn along the vertical interval of ink horn, what adopt is the principle of circuit break-make, utilize a plurality of detection posts to survey the liquid level in the ink horn, realize the fixed point of liquid level height in the ink horn through reasonable arrangement structure and survey, simple and convenient detection facility has simple structure, the cost is lower, the reliability is high, stable good advantage.

Description

Structure for detecting liquid level of ink box

Technical Field

The utility model relates to a printer especially relates to a structure for ink horn liquid level detects.

Background

The detection of the amount of ink in the ink cartridge plays an important role in a continuous ink jet printer. The current methods for ink cartridge level detection are: probe detection, a ball float valve, calculation of the volume of liquid remaining in the cartridge by using the vacuum level in the cartridge, etc. The prior art has the defects of complex structure, large influence of environment factors on reliability, complex algorithm and the like.

As shown in fig. 1, in order to provide a probe detection apparatus, a plurality of metal probes 91 having different lengths are disposed on a hybrid cylinder head 92, and a lower end point of each probe 91 is used as a monitoring position point. The probe detection device needs a large installation area, is limited to the small opening area of the ink box 93, and structurally interferes with the ink extraction pipe. In the case where the ink tank 93 is deep, the probe 91 is required to be relatively long to detect the low point of the ink level, further increasing the manufacturing cost of the probe. Because the length is longer and the gap is smaller, the probes are easy to bend and are easy to interfere with each other structurally.

The float valve switch, the ball-cock assembly divide into floater and guide arm. The floating ball is sleeved on the guide rod and is arranged at the bottom of the container, and the floating ball moves along with the rising or falling of the liquid level in the ink box. The height of the liquid level in the ink box is judged by the mutual induction of the induction elements in the floating ball and the guide rod. The up-and-down moving process is easy to be blocked, if the gap between the floating ball and the guide rod is too large, the induction accuracy is influenced, and the judgment of the height of the liquid level in the ink box is influenced

The level of ink in the cartridge is measured by the degree of vacuum in the cartridge, and the reservoir is adapted to reduce the pressure in the internal space as liquid is introduced into the printer, the magnitude of the pressure reduction increasing substantially monotonically, so that the volume of liquid remaining can be calculated based on the minimum suction pressure required to obtain further introduction of liquid from the reservoir to the printer. The method needs an additional pressure sensor, the requirement on the elasticity of the bottle is strict, and the minimum suction pressure is influenced by the greater or smaller softness. Resulting in a large error in the calculated liquid level height from the actual height.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, the cost is lower, the reliability is high, stability is good be used for the structure of ink horn liquid level detection.

In order to achieve the above object, the technical solution of the present invention is:

the utility model relates to a structure for detecting the liquid level of an ink box, which comprises an ink box and a plurality of detection columns; the plurality of detection columns are arranged on the side wall of the ink box at intervals along the longitudinal direction of the ink box; the detection column comprises a stainless steel nut, a wiring terminal, a wire and a fixing screw, the stainless steel nut is molded on the side wall of the ink box as an insert, the inner end of the stainless steel nut penetrates out of the inner wall of the ink box and extends into the inner cavity of the ink box, the wiring terminal is fixedly connected onto the stainless steel nut through the fixing screw in a screwed mode, and the wire is fixedly connected onto the wiring terminal.

The detection columns consist of a common end detection column, a low liquid level detection column, a foot liquid level detection column, a high liquid level detection column and an overflow warning detection column; the public end detection column, the low liquid level detection column, the foot liquid level detection column, the high liquid level detection column and the overflow warning detection column are sequentially arranged on the side wall of the ink box from bottom to top.

After the scheme is adopted, the utility model comprises the ink box and a plurality of detection columns; the detection columns are installed on the side wall of the ink box at intervals along the longitudinal direction of the ink box, the principle of circuit on-off is adopted, the liquid level in the ink box is detected by the detection columns, fixed-point detection of the height of the liquid level in the ink box is realized through a reasonable arrangement structure, and the detection facility is simple and convenient, and has the advantages of simple structure, low cost, high reliability and good stability.

The invention will be further described with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic structural view of a conventional probe apparatus;

fig. 2 is a side view of the present invention;

FIG. 3 is a front view of the ink cartridge of the present invention;

fig. 4 is a cross-sectional view of the ink cartridge of the present invention.

Detailed Description

As shown in fig. 2-4, the utility model relates to a structure for detecting the liquid level of an ink box, which comprises an ink box 1, a plurality of detecting columns 2 and a box cover 3.

The box cover 3 is buckled at the open end of the ink box 1. The plurality of detection columns 2 are mounted on the side wall of the ink cartridge 1 at intervals along the longitudinal direction of the ink cartridge 1.

The detection column 2 comprises a stainless steel nut 21, a wiring terminal 22, a lead 23 and a fixing screw 24. Stainless steel nut 21 moulds plastics on the lateral wall of ink horn 1 as the inserts, and the inner of stainless steel nut 21 wears out the inner wall of ink horn 1 and stretches into the inner chamber of ink horn 1, and binding post 22 passes through the fixed spiro union of set screw 24 on stainless steel nut 21, and the one end fixed connection of wire 23 is on binding post 22, and the other end external potential sampler of wire 23.

In the present embodiment, the plurality of detection columns 2 are composed of a common end detection column 201, a low liquid level detection column 202, a foot liquid level detection column 203, a high liquid level detection column 204, and an overflow warning detection column 205; the common end detection column 201, the low liquid level detection column 202, the foot liquid level detection column 203, the high liquid level detection column 204 and the overflow warning detection column 205 are sequentially arranged on the side wall of the ink box 1 from bottom to top.

The common end detection column 201 is arranged at the lowest one of all the detection columns 2 in the ink box 1; the low liquid level detection column 202 is arranged at the lowest liquid level point of the ink box 1 allowed by the ink jet printer; the foot level detecting column 203 is disposed at a position where the ink storage amount in the ink cartridge 1 is sufficient, typically selected at the capacity 2/3 of the ink cartridge 1; the high liquid level detection column 204 is provided at 4/5 of the capacity of the ink cartridge 1; the overflow warning detecting column 205 is generally provided at the edge of the upper opening of the ink cartridge 1.

The utility model discloses a theory of operation:

the common end detection column 201 is grounded through a lead, the common end detection column 201, the low liquid level detection column 202, the foot liquid level detection column 203, the high liquid level detection column 204 and the overflow warning detection column 205 are connected to a non-zero potential point through leads, and the potential is marked as U. When no ink exists in the ink box 1, the electric potential of each detection column collected by the electric potential sampler is respectively as follows: the potential of the common detection column 201 is zero, and the potentials of the low liquid level detection column 202, the foot liquid level detection column 203, the high liquid level detection column 204, and the overflow warning detection column 205 are all U. When the ink level in the ink box 1 reaches the low liquid level detection column 202, the low liquid level detection column 202 is communicated with the common end detection column 201 through the ink, the potential sampler collects the potentials of all points, namely the potentials of the common end detection column 201 and the low liquid level detection column 202 are zero, and the potentials of the foot liquid level detection column 203, the high liquid level detection column 204 and the overflow warning detection column 205 are all U. When the ink level in the ink cartridge 1 reaches the foot liquid level detection column 203, the low liquid level detection column 202 and the foot liquid level detection column 203 are connected with the common end detection column 201 through the ink, the potentials of the common end detection column 201, the low liquid level detection column 202 and the foot liquid level detection column 203 are zero, and the potentials of the high liquid level detection column 204 and the overflow warning detection column 205 are U. When the ink in the ink cartridge 1 reaches the high liquid level detection column 204, the low liquid level detection column 202, the foot liquid level detection column 203 and the high liquid level detection column 204 are communicated with the common end detection column 201 through the ink, the potentials of the common end detection column 201, the low liquid level detection column 202, the foot liquid level detection column 203 and the high liquid level detection column 204 are zero, the potential of the overflow warning detection column 205 is U, and when the ink in the ink cartridge reaches the overflow warning detection column 205, the potentials of all the detection columns 2 are zero.

According to the principle, when the ink-jet printer is in operation, when the potential of the low liquid level detection column 202 is U, it indicates that the ink in the ink cartridge 1 is short, and the ink pump needs to be started to add ink. When the electric potential of the foot liquid level detection column 203 is zero, it indicates that the ink in the ink box 1 is enough and does not need to act, and the normal operation is continued. When the potential of the high level detection column 204 is zero, indicating that the liquid level in the ink cartridge 1 is full, the ink addition pump needs to be turned off to stop adding ink. When the overflow warning detecting column 205 is at zero potential, it indicates that the ink in the ink cartridge 1 is about to overflow, and the machine immediately stops all operations. And restarting the operation after manual fault removal.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.

Claims (2)

1. A structure for ink cartridge liquid level detection, characterized in that: comprises an ink box and a plurality of detection columns; the plurality of detection columns are arranged on the side wall of the ink box at intervals along the longitudinal direction of the ink box; the detection column comprises a stainless steel nut, a wiring terminal, a wire and a fixing screw, the stainless steel nut is molded on the side wall of the ink box as an insert, the inner end of the stainless steel nut penetrates out of the inner wall of the ink box and extends into the inner cavity of the ink box, the wiring terminal is fixedly connected onto the stainless steel nut through the fixing screw in a screwed mode, and the wire is fixedly connected onto the wiring terminal.

2. The structure for ink tank level detection according to claim 1, wherein: the detection columns consist of a common end detection column, a low liquid level detection column, a foot liquid level detection column, a high liquid level detection column and an overflow warning detection column; the public end detection column, the low liquid level detection column, the foot liquid level detection column, the high liquid level detection column and the overflow warning detection column are sequentially arranged on the side wall of the ink box from bottom to top.