CN215902103U - High-precision wide-range continuous liquid level detection device for glue dispensing needle cylinder - Google Patents
High-precision wide-range continuous liquid level detection device for glue dispensing needle cylinder Download PDFInfo
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- CN215902103U CN215902103U CN202122408984.5U CN202122408984U CN215902103U CN 215902103 U CN215902103 U CN 215902103U CN 202122408984 U CN202122408984 U CN 202122408984U CN 215902103 U CN215902103 U CN 215902103U
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Abstract
The utility model discloses a high-precision wide-range continuous liquid level detection device for a dispensing syringe, which comprises a piezoelectric valve mounting and switching fixed block, wherein a piezoelectric valve is arranged on the piezoelectric valve mounting and switching fixed block, a sensor mounting plate is arranged on the piezoelectric valve, a sensor mounting plate fixing part is arranged on the right side of the upper end of the sensor mounting plate, a runner part fixed block is arranged at the lower end of the sensor mounting plate, a rubber cartridge mounting and switching fixed block is arranged on one side of the sensor mounting plate, a capacitance sensor is arranged on one side of the rubber cartridge mounting and switching fixed block, a rubber cartridge fixing ring is arranged at the upper end of the rubber cartridge mounting and switching fixed block, a needle head clamping block is arranged at the lower end of the rubber cartridge mounting and switching fixed block, and a rubber cartridge is arranged on the rubber cartridge fixing ring. Has good market economic value.
Description
Technical Field
The utility model relates to the technical field of signal monitoring of dispensing equipment, in particular to the field of a continuous liquid level detection device of a dispensing needle cylinder with high precision and wide range.
Background
The dispensing equipment is widely applied to the fields of semiconductors, electronics, medicines and the like. In the use of dispensing equipment, in order to monitor the surplus of gluing glue in the bucket, prevent the product quality problem condition that brings because the viscose exhausts, equipment evacuation glue, dispensing equipment can dispose the liquid level automated inspection sensor component of viscose class glue: when the glue in the syringe is reduced to a certain amount, the sensor detects a signal near the installation position by utilizing a capacitance sensing principle so as to judge the level of the glue in the container of the syringe; the measurement mode is limited by the error of the installation position of the sensor and the detection signal range of the sensor, the current actual liquid level cannot be accurately judged, and the dynamic liquid level information of the glue in the glue dispensing process in the glue barrel cannot be acquired; when the glue in the glue barrel is used, the glue is actually left in the glue barrel container, and whether the residual quantity meets the process requirements is judged by the existing low liquid level sensor measuring method; in addition, the judgment of the residual quantity of the residual glue of the glue barrel can be influenced by the installation error of the low-liquid-level switching value type sensor, so that the residual waste of the glue is easily caused; the switching value type capacitance proximity sensor can generate misjudgment possibility under the condition of the wall hanging phenomenon of some rubber cylinders.
In the prior art, containers such as some water tanks and water tanks are applied in multi-section or continuous non-contact liquid level detection, but because the stability of a sensor is poor and the liquid level precision error is large, the installation mode conditions of the detection mode need to be adhered to the outer wall of the container, the replacement of a glue barrel of dispensing equipment is limited, the repeatability of a measured value is poor under the condition that the glue barrel is replaced by glue media such as other adhesives, and the mature application of relevant industrial scenes is avoided, so that the improvement is needed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a high-precision wide-range continuous liquid level detection device for a dispensing needle cylinder.
A high-precision wide-range continuous liquid level detection device for a dispensing needle cylinder comprises a piezoelectric valve mounting and switching fixed block, wherein a piezoelectric valve is arranged on the left side of the piezoelectric valve mounting and switching fixed block, the piezoelectric valve mounting and switching fixed block is detachably and fixedly connected with the piezoelectric valve, a sensor mounting plate is arranged on the left side of the piezoelectric valve, a sensor mounting plate fixing part is arranged on the right side of the upper end of the sensor mounting plate, a runner part fixed block is arranged at the lower end of the sensor mounting plate, a rubber cylinder mounting and switching fixed block is arranged on the left side of the sensor mounting plate, a capacitance sensor is arranged on the right side of the rubber cylinder mounting and switching fixed block, a rubber cylinder fixing ring is arranged on the upper end of the rubber cylinder mounting and switching fixed block, the rubber cylinder fixing ring is in bolted connection with the rubber cylinder mounting and switching fixed block, and a needle head clamping block is arranged at the lower end of the rubber cylinder mounting and switching fixed block, the upper end of packing element fixed block sets up the rubber tube, capacitanc sensor with the packing element laminating is connected, and the point is glued the controller through the point of gluing equipment and is controlled the dispensing valve and go out to glue, and level sensor dynamic detection glue liquid level state's automatic signal acquisition and control flow provides the automation scheme of factory production big data collection simultaneously.
Preferably, a piston is arranged in the rubber cylinder, a luer connector is arranged at the bottom of the rubber cylinder, the luer connector is detachably and fixedly connected with the rubber cylinder, a needle head is arranged at the tail end of the luer connector, the needle head is detachably connected with the luer connector, the upper end of the rubber cylinder is sleeved in the rubber cylinder fixing ring, the needle head is sleeved on the needle head clamping block, a rubber cylinder adapter is arranged at the top of the rubber cylinder, a corresponding relation data function of capacity and a sensor amplifier signal value is established according to the liquid level information of the device according to the type of glue or other fluids, so that an accurate range test and measurement method of glue media with different characteristics is met, the device is not limited to a strip-shaped continuous liquid level measurement mode, and sectional type liquid level measurement and control can also be adopted. The method also comprises the steps of measuring the full liquid level range in the dispensing equipment, and adopting a wider-range strip-shaped capacitive sensor to detect different needle cylinder capacities.
Preferably, the capacitive sensor adopts a strip structure, the capacitive sensor is electrically connected with the data processing module, the data processing module comprises a signal sensor, a signal amplifier and an analog quantity signal acquisition card, the data processing module is electrically connected with the dispensing controller, the capacitive sensor is applied to a wide-range detection mode of a glue cylinder container of a glue medium such as glue, and the like, voltage (or current) signals are output in a segmented continuous mode, amplified signals are converted to the analog quantity signal acquisition card through the sensor, the capacitive sensor is not limited to a strip continuous liquid level measurement mode, a surrounding type liquid level detection mode can also be adopted, the surrounding type liquid level detection mode is not limited to a piezoelectric valve, other pneumatic valves are matched or a needle flow channel fixing mode is adopted, and the mounting mode is also suitable for the capacitive sensor.
The beneficial effects to prior art are that, this device provides and has realized the detection scheme of a glue dispensing equipment glue liquid level high accuracy, wide range, has promoted the degree of automation of measuring glue residual capacity, and the accurate production technology condition that reflects: reduce the consume of glue raw and other materials, practice thrift electronic equipment's manufacturing cost: this device has high accuracy, observable, and the reliability under the single medium operating mode is high, and is good to the detection scheme commonality of different fluid medium, can be applied to the liquid level observation occasion under the capacitive sensor response condition: the device has simple structure, is convenient to install and maintain through manual operation, and has good market economic value.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a right schematic view of a three-dimensional structure of a syringe glue level detection device configured with a needle according to the present invention;
FIG. 3 is a right side schematic view of a three-dimensional structure of a syringe glue level detection device configured with a needle according to the present invention;
FIG. 4 is a schematic diagram of a capacitive sensor and cross-section of a container level measurement area in accordance with the present invention;
FIG. 5 is a graph of the correspondence between sensor amplifier output signals and liquid level scales of the present invention;
FIG. 6 is a schematic perspective view of a wrap-around liquid level detection apparatus configured with a piezoelectric valve according to the present invention;
the above reference numbers: piezoelectric valve installation switching fixed block 1, piezoelectric valve 2, sensor mounting panel mounting 3, sensor mounting panel 4, packing element fixed ring 5, packing element adapter 6, piston 7, packing element 8, capacitive sensor 9, glue runner spare 10, runner spare fixed block 11, packing element installation switching fixed block 12, luer 13, syringe needle presss from both sides tight piece 14, data processing module 15.
Detailed Description
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the utility model as defined by the appended claims.
In order to facilitate an understanding of the utility model, the utility model is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The present invention will be described in detail with reference to the accompanying drawings.
Example 1, as shown in figure 1: the whole device comprises a piezoelectric valve mounting and switching fixed block 1, a piezoelectric valve 2, a sensor mounting plate fixed part 3, a sensor mounting plate 4, a rubber cylinder fixing ring 5, a rubber cylinder adapter 6, a piston 7, a rubber cylinder 8, a capacitance sensor 9, a glue flow channel part 10, a flow channel part fixed block 11, a rubber cylinder mounting and switching fixed block 12, a luer connector 13, a needle clamping block 14 and a data processing module 15, wherein one side of the piezoelectric valve 2 is fixed on the piezoelectric valve mounting and switching fixed block 1, the other side of the piezoelectric valve 2 is fixed on the sensor mounting plate 4, the rubber cylinder mounting and switching fixed block 12 is arranged on the sensor mounting plate 4, the rubber cylinder mounting and switching fixed block 12 is provided with the rubber cylinder fixing ring 5, the rubber cylinder 8 is sleeved on the rubber cylinder fixing ring 5, the needle is fixed in the needle clamping block 14, and the detection surface of the capacitance sensor 9 is tightly attached to the outer wall of the rubber cylinder 8, flush with the outer wall, the bar structure capacitive sensor is installed on sensor mounting panel 4, and the solid fixed ring 5 of packing element of sensor mounting panel 4 upper end entangles upper and middle portion of packing element 8, keeps the vertical fixation of packing element 8, avoids producing the insensitive of sensor signal because of offset, also prevents sideslip of packing element 8 simultaneously.
Example 2, as shown in fig. 2 and 4, a piston 7 is disposed inside the glue cylinder 8, so that compressed air works on the piston 7 to push the glue in the glue cylinder 8 to uniformly flow out of the glue outlet, a luer 13 is disposed at the bottom of the glue cylinder 8, the luer 13 is detachably and fixedly connected with the glue cylinder 8, so as to facilitate the needle to be well combined with the glue cylinder 8 and have a certain sealing property, a needle is disposed at the end of the luer 13, so as to detachably connect the needle with the luer 13, so as to ensure that the glue can be better and accurately glued, the upper end of the glue cylinder 8 is sleeved in the glue cylinder fixing ring 5, the needle is sleeved on the needle clamping block 14, so as to better ensure the precision and to quickly change the used glue cylinder 8 during use, a glue cylinder adapter 6 is disposed at the top of the glue cylinder 8, the sealing device is used for ensuring that the rubber cylinder 8 can have good sealing performance when compressed gas is supplied, and meanwhile, the empty rubber cylinder 8 is convenient to replace.
In embodiment 3, as shown in fig. 4 and 5, the capacitive sensor is in a strip structure, the capacitive sensor 9 is electrically connected to the data processing module 15, the data processing module 15 includes a signal sensor, a signal amplifier and an analog signal acquisition card, the data processing module 15 is electrically connected to a dispensing controller, and the dispensing valve controls the dispensing amount of the glue through the dispensing controller. Along with the consumption of the glue, the glue liquid level in the glue cylinder synchronously changes. The sensor amplifier receives the signal change of the sensor and outputs an analog quantity model of 0-10V or 4-20 mA. The sensor amplifier is installed separately. And the signal acquisition module is used for converting the corresponding actual liquid level scale value of the rubber cylinder according to the corresponding relation between the signal value and the detection range after obtaining the analog quantity signal, and the sensor amplifier is used for setting parameter teaching on the lowest liquid level and the highest liquid level of the detection range to obtain the actual working glue liquid level range and the voltage value corresponding to the acquisition card signal. The 15cc scale position of the device corresponds to the full-scale 10V voltage, and the voltage value is approximately 0V under the condition of 0cc (empty glue). Each different fluid, glue of different viscosity, has accurate voltage measurement value output on the scale mark of the device. After the glue is exhausted, the voltage value of the sensor amplifier is less than 0.5V. The glue consumption rate is controlled within 0.5cc, and in order to obtain the accurate corresponding relation between the sensor signal value and the measuring range of the glue cylinder liquid level, the sensor of the device has good signal value consistency. And measuring the voltage or current value of the scale (with the precision of 5%) for multiple times, and then carrying out data mean processing. The measured data value of each glue provides dynamic monitoring reference for the glue liquid level of the equipment, the consumption condition of the glue of the equipment can be monitored visually in the production process, and the low-liquid-level alarm signal can be output by adopting the improved capacitive sensor. The glue residual condition of the tail end of the needle cylinder caused by glue consumption can be accurately positioned. Due to the surrounding installation mode, the sensor can detect the liquid condition in the container in a wider range. Even if residues are left around the pipe wall and the wall is hung on the wall, the wrapped and surrounded sensor can still increase the detection sensitivity. The installation detection mode can achieve the effect of multipoint induction and is particularly suitable for replacing a single-direction inductor. The analog quantity signal detection at the tail end of the container or the signal output of the switching value is realized by setting the signal acquisition amplifier.
The working principle of the utility model is as follows: the strip-shaped capacitive sensor is tightly attached to and fixed with the rubber tube, when the glue liquid level in the rubber tube is reduced, the sensor amplifier receives the signal change of the sensor, the signal is converted into an analog signal through the signal acquisition module, and the actual liquid level height in the rubber tube is converted out and fed back to the dispensing valve in real time according to the corresponding relation between the analog signal value and the detection range.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the utility model as defined by the appended claims.
Claims (3)
1. A high-precision wide-range continuous liquid level detection device for a dispensing needle cylinder is characterized by comprising a piezoelectric valve mounting and switching fixed block, wherein the left side of the piezoelectric valve mounting and switching fixed block is provided with a piezoelectric valve, the piezoelectric valve mounting and switching fixed block and the piezoelectric valve can be detachably and fixedly connected, the left side of the piezoelectric valve is provided with a sensor mounting plate, the right side of the upper end of the sensor mounting plate is provided with a sensor mounting plate fixing part, the lower end of the sensor mounting plate is provided with a runner part fixed block, the left side of the sensor mounting plate is provided with a rubber cylinder mounting and switching fixed block, the right side of the rubber cylinder mounting and switching fixed block is provided with a capacitive sensor, the upper end of the rubber cylinder mounting and switching fixed block is provided with a rubber cylinder fixing ring, the rubber cylinder fixing ring is in bolted connection with the rubber cylinder switching fixed block, and the lower end of the rubber cylinder mounting and switching fixed block is provided with a needle head clamping block, the upper end of the rubber sleeve fixing block is provided with a rubber tube, and the capacitive sensor is connected with the rubber sleeve in a fitting manner.
2. The continuous liquid level detection device for the high-precision wide-range dispensing syringe according to claim 1, wherein a piston is arranged inside the syringe, a luer connector is arranged at the bottom of the syringe, the luer connector is detachably and fixedly connected with the syringe, a needle is arranged at the tail end of the luer connector, the needle is detachably connected with the luer connector, the upper end of the syringe is sleeved in the syringe fixing ring, the needle is sleeved on the needle clamping block, and a syringe adapter is arranged at the top of the syringe.
3. The continuous liquid level detection device for the dispensing syringe with high precision and wide measuring range according to claim 1, wherein the capacitive sensor is of a strip structure, the capacitive sensor is electrically connected with a data processing module, the data processing module comprises a signal sensor, a signal amplifier and an analog quantity signal acquisition card, and the data processing module is electrically connected with a dispensing controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122408984.5U CN215902103U (en) | 2021-10-08 | 2021-10-08 | High-precision wide-range continuous liquid level detection device for glue dispensing needle cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122408984.5U CN215902103U (en) | 2021-10-08 | 2021-10-08 | High-precision wide-range continuous liquid level detection device for glue dispensing needle cylinder |
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| CN215902103U true CN215902103U (en) | 2022-02-25 |
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| CN202122408984.5U Active CN215902103U (en) | 2021-10-08 | 2021-10-08 | High-precision wide-range continuous liquid level detection device for glue dispensing needle cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114918102A (en) * | 2022-06-30 | 2022-08-19 | 广东高标电子科技有限公司 | Needle offset error reporting device and dispensing valve |
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2021
- 2021-10-08 CN CN202122408984.5U patent/CN215902103U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114918102A (en) * | 2022-06-30 | 2022-08-19 | 广东高标电子科技有限公司 | Needle offset error reporting device and dispensing valve |
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