CN215249480U - High-precision automatic filling device for liquid metal - Google Patents
High-precision automatic filling device for liquid metal Download PDFInfo
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- CN215249480U CN215249480U CN202121426274.9U CN202121426274U CN215249480U CN 215249480 U CN215249480 U CN 215249480U CN 202121426274 U CN202121426274 U CN 202121426274U CN 215249480 U CN215249480 U CN 215249480U
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Abstract
The utility model discloses an automatic filling device of liquid metal high accuracy belongs to liquid metal filling technical field, including compressed gas supply device and reservoir, compressed gas supply device and reservoir communicate through first pipeline, reservoir exit is equipped with the bottle, the bottle is placed on weighing device to the bottle. The utility model discloses replaced traditional artifical filling technique, weighed every bottle through HMI setting and needed the weight of filling, set up filling mode and the syringe needle internal diameter size that matches, system automatic identification filling can realize automatic accurate measurement.
Description
Technical Field
The utility model relates to a liquid metal filling technical field especially relates to a liquid metal high accuracy automatic filling device.
Background
Liquid metal is a novel high-thermal-conductivity material, is liquid at room temperature, and has the advantages of good fluidity, large specific gravity and surface tension and high price. The material can be used as a thermal interface material, the material is applied to CPU heat dissipation of high-power heating devices, IGBT modules, servers and high-performance game machines, and development trend is developed, and a plurality of manufacturers actively use liquid metal as a heat conduction medium to replace the traditional silicone grease.
Since the liquid metal has a high specific gravity and surface tension and the raw materials are expensive. The material is inevitably refined and accurate in filling, transportation and use. The traditional liquid adopts manual filling and manual weighing mostly, and because the manual weighing cost is higher, uncontrollable factors are more, and the traditional manual filling mode is difficult to realize large-scale batch production, so the high-precision automatic filling device specially used for liquid metal is necessary in industry. Conventional liquids such as beverages are also filled automatically, but have lower value and lower filling precision than liquid metal beverages.
Because the liquid metal has larger surface tension and higher specific gravity, the following problems exist when the traditional needle cylinder is used for manual extrusion filling: firstly, when a traditional needle cylinder is matched with a needle head with the inner diameter of about 0.6-1.0 mm for filling, liquid metal can drip due to self weight, but the speed is lower; when the needle cylinder push rod is manually extruded, the extrusion pressure degree cannot be controlled, so that the weight of the extruded liquid metal cannot be controlled, the secondary weighing error is large, and the filling quantity cannot be accurately controlled; secondly, when the traditional syringe is filled with a needle head with the inner diameter of less than 0.6mm, the liquid metal cannot drop due to self weight because of large surface tension of the liquid metal; the needle cylinder push rod needs to be manually extruded, the filling quantity cannot be accurately controlled, the filling speed is low, and batch production cannot be carried out; more liquid metal remains at the head of the needle cylinder during extrusion, the extrusion pressure cannot be controlled, and the phenomenon of splashing of the liquid metal is easily caused; and fourthly, the manual extrusion filling operation is complex, and a large amount of manpower and material resources are needed when the batch production is carried out, so that the production cost is increased.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems of large error, high cost, more uncontrollable factors, low efficiency and complex operation of the existing manual filling of liquid metal. The high-precision automatic liquid metal filling device is simple in structure, high in precision, good in reliability, high in efficiency and convenient.
In order to realize the above purpose, the utility model provides an automatic filling device of liquid metal high accuracy, a serial communication port, including compressed gas supply device and reservoir, compressed gas supply device and reservoir pass through first pipeline intercommunication, reservoir exit is equipped with the bottle, the bottle is placed on weighing device to the bottle.
In one or more embodiments, a first valve is disposed on the first pipeline.
In one or more embodiments, a second pipeline is arranged at the outlet of the liquid storage tank, and a filling bottle is arranged at the outlet of the second pipeline.
In one or more embodiments, the second pipeline is provided with a plurality of branches, each branch outlet is provided with a containing bottle, and each containing bottle is arranged on a corresponding weighing device.
In one or more embodiments, a second valve is disposed on each of the branches.
In one or more embodiments, each branch outlet is provided with a needle, and a containing bottle is arranged below the needle.
In one or more embodiments, the needle has an inner diameter in the range of 0.6 to 1.0mm or 0.14 to 0.25 mm.
In one or more embodiments, a vent valve is provided on the reservoir.
In one or more embodiments, a support is provided below the reservoir.
In one or more embodiments, the compressed gas supply device contains one of air, nitrogen, and argon.
A filling method of a high-precision automatic liquid metal filling device comprises the following steps:
after the system is started, the system automatically closes the first valve, the second valve and the vent valve, the compressed gas supply device is started to operate, when the pressure of the outlet of the compressed gas supply device reaches a set value, the system automatically opens the first valve and the second valve, and the liquid metal in the liquid storage tank is pushed by the air pressure to flow out of the containing bottle along the direction of the second pipeline through the needle head. The system can select the following filling process according to the preset needle specification:
firstly, a self-weight filling process: when the inner diameter of a needle head preset on a system HMI (human-computer interaction interface) is 0.6-1.0 mm, the system automatically selects self-weight filling.
When the system detects that the weight signal of the weighing device reaches a preset high limit, the system stops the operation of the compressed gas supply device, closes the first valve and opens the vent valve, and the liquid metal drops into the containing bottle due to self weight; when the system detects that the weight of the weighing device is lower than the set weight (such as 2g), the control system closes the vent valve and the second valve, the residual liquid metal in the needle head drops into the containing bottle to just reach the set weight (such as 500g), and the gravity filling is finished.
Pressure filling process: when the inner diameter of a needle head preset on a system HMI is 0.14-0.25 mm, liquid metal cannot automatically drip, and the system automatically selects pressure filling.
When the system detects that the weight signal of the weighing device reaches a preset high limit, the system controls the compressed gas supply device to reduce the output pressure value of the system, the dropping speed of the liquid metal is controlled through low pressure until the target weight is reached, the control system automatically closes the first valve, cuts off the first pipeline, closes the second valve, stops the compressed gas supply device, and filling is completed.
Compared with the prior art, the utility model discloses the technological effect who reaches as follows:
(1) the utility model discloses replaced traditional artifical filling technique, set up the weight that every bottle of weighing bottle needs the filling through HMI (human-computer interface), selected filling syringe needle's internal diameter size, then system automatic identification filling time, quantity of weighing etc. automatic switch-over filling mode can realize automatic accurate filling.
(2) According to different process requirements, different needles can be selected, automatic quantification is realized by the gravity of liquid metal when the needle with the diameter of 0.6-1.0 mm is close to the end point, and the residual liquid metal in the needle drips to make up for an error value; to the syringe needle that needs external thrust effect below 0.6mm just can make liquid metal whereabouts, thereby through compressed gas's pressure control thrust in the control pipeline, drip with higher speed under the high pressure, thereby the low pressure falls low flow control dripping accurate, makes the utility model discloses liquid accuracy of high surface tension, high proportion such as filling liquid metal is high, the good reliability.
(3) The utility model discloses simple structure, each part firm in connection is reliable, prevents gas leakage, and each part dismantles simply, can recycle, and the maintenance of being convenient for, easily promotes, and this device and technology are fit for multiple physical property and the similar material filling of liquid metal.
(4) The utility model discloses an adopt siemens S7-1200PLC as the controller, supplementary siemens touch-sensitive screen HMI-Smart700IE that adopts as data input output module. Data acquisition is carried out on the weighing signals by adopting a weighing device; the compressed gas supply device feeds back the air pressure in real time. Through programming the PLC, the PLC carries out logic operation on the acquired data and carries out closed-loop control on the opening and closing of the first valve, the second valve and the vent valve. And the outlet pressure of the compressed gas supply device is regulated through the PID regulating function of the PLC, so that the aims of controlling the flow and accurately weighing are fulfilled.
Drawings
Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.
Description of the main reference numerals:
1-compressed gas supply device, 2-first pipeline, 3-weighing device, 4-filling bottle, 5-needle, 6-first valve, 7-second valve, 8-vent valve, 9-second pipeline, 10-bracket and 11-liquid storage tank.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, the present invention according to an embodiment of the present invention is described as follows.
The high-precision automatic liquid metal filling device comprises a compressed gas supply device 1 and a liquid storage tank 11, wherein one of air, nitrogen and argon is filled in the compressed gas supply device 1. The compressed gas supply device 1 is communicated with the liquid storage tank 11 through a first pipeline 2, and a first valve 6 is arranged on the first pipeline 2.
The outlet of the liquid storage tank 4 is provided with a second pipeline 9, in order to increase the filling quantity and improve the filling efficiency, the second pipeline 9 is provided with a plurality of branches, each branch is provided with a second valve 7, the outlet of each branch is provided with a needle head 5, a containing bottle 4 is arranged below the needle head 5, and each containing bottle 4 is arranged on a corresponding weighing device 3.
When the inner diameter of the needle head 5 is 0.6-1.0 mm, the liquid metal can drop due to self weight, and the system selects a self-weight filling process; when the inner diameter range of the needle head 5 is 0.14-0.25 mm, the liquid metal is difficult to drip through self weight due to large surface tension, a pressure filling process is selected, and the dripping speed is controlled through proper system pressure, so that quantitative filling is realized.
In order to ensure the balance of the air pressure inside and outside the liquid storage tank 11, a vent valve 8 is arranged on the liquid storage tank 11.
In order to support the liquid storage tank 11 and ensure that the liquid storage tank 11 is higher than the filling bottle 4, a bracket 10 is arranged below the liquid storage tank 11.
The first pipeline 2 adopts a PU pipe with the model of PU-8. The first valve 6 is a pneumatic electromagnetic valve, 4V210-08-DC24V products can be selected, and the system controls the action of the first valve 6 to be used for switching on and off the compressed gas supplied by the compressed gas supply device 1, so that the filling speed and accuracy of the liquid metal are further controlled. The second valve 7 is an electric ball valve, and the on-off of the second valve 7 is controlled by the system to quantitatively fill liquid metal.
The first pipeline 2 is used for conveying the compressed gas provided by the compressed gas supply device 1 into the liquid storage tank 11, and pushing the liquid metal in the liquid storage tank 11 into the filling bottle 4 for filling.
The second pipeline 9 is used for draining the liquid metal in the liquid storage tank 11 to the needle 5, and the second pipeline 9 and the liquid storage tank 11 are connected through a quick connector, so that the pipe fitting is convenient to detach. The second pipeline 9 branch is in threaded connection with the joints of the first valve 6 and the needle 5, so that the sealing and fastening are convenient, and the pipe fitting is convenient to disassemble and clean.
The compressed gas supply device 1 is purchased complete equipment and is used for producing low-pressure compressed gas, the device is provided with remote control, and the outlet pressure can be intelligently adjusted.
The inner diameter of the needle head 5 can be selected to be various models such as 0.6-1.0 mm, 0.16mm and 0.14mm, the inner diameter of the needle head 5 is used for controlling the dropping speed of the liquid metal, and the system automatically selects a filling flow and controls the filling precision.
A containing bottle 4 is arranged right below the needle head 5, the size of the containing bottle 4 can be selected according to the actual production capacity, and the specification selects a 500g capacity for containing.
The liquid storage tank 11 is used for containing liquid metal to be filled, the interior of the liquid storage tank 11 is isolated from the outside air, and the first pipeline 2 and the vent valve 8 are arranged on the upper portion.
The utility model discloses according to filling process design control system as follows:
the electric components comprise (a) CPU-S7-1214plc, (b) HMI-Smart700IE and (c) electric control cabinet.
CPU-S7-1214plc is responsible for collecting the weighing data of the weighing device 3, the on-off signals of the first valve 6 and the second valve 7, the operation signal of the compressed gas supply device 1, the outlet pressure signal, etc. and then performing logic operation. And a PID regulating function is adopted. The output signals are implemented to control the first valve 6, the second valve 7, the vent valve 8 and the compressed gas supply device 1.
HMI-Smart700IE is used to display the gas pressure, the valve opening/closing signal, the operation signal of the compressed gas supply apparatus 3, and the outlet pressure signal. The operator can set the filling weight, the inner diameter of the needle head 5, the empty bottle weight of the filling bottle 4 and the like through the HMI, and set parameters for system operation.
Thirdly, the electric control cabinet is used for converting input and output signals to control different devices
The utility model discloses an implement process as follows:
the implementation process comprises the following steps: the weight of the empty filling bottle 4 is set (for example, the set value is 10g) in the HMI according to the process requirements, the weight of the liquid metal to be filled (for example, the set value is 500g), the inner diameter of the needle 5 is set, the pressure of the compressed gas is set (for example, the set value is 0.25MPa), and the PLC carries out logic operation according to the data and carries out system control.
The self-weight filling process: when the internal diameter of the selection needle head 5 is 0.6-1.0 mm, the starting device is started, the first valve 6, the second valve 7 and the vent valve 8 are automatically closed by the system, the compressed gas supply device 1 is automatically started by the system, when the pressure of outlet gas reaches 0.25MPa, the first valve 6 and the second valve 7 are automatically opened by the system, the liquid metal in the liquid storage tank 11 is pushed by air pressure, and the liquid metal is extruded by compressed gas and flows out to the containing bottle 4 along the second pipeline 9 through the needle head 7. When the weighing capacity of the weighing device 3 reaches 450g and the control system detects that the weight signal of the weighing device 3 reaches the high limit, the control system closes the operation of the compressed gas supply device 1, closes the first valve 6 and opens the vent valve 8 to ensure that the air pressure of the outside and the liquid storage tank 11 is balanced, and the liquid metal is filled by self-weight dripping. When the weight of the weighing device 5 reaches 498g, the control system detects that the weight of the weighing device 3 is lower than the set weight of 2g, the control system closes the vent valve 8 and the second valve 7, the residual liquid metal in the needle head 5 drops into the containing bottle and just reaches 500g of the weight to be filled, each time parameter of self-weight filling needs to be measured on site through process requirements, the residual liquid metal enters the system through HMI (human machine interface) setting for logical operation, and the data are data used for demonstrating the device and process performance field test.
Pressure filling process: when the internal diameter of the needle head 5 is selected to be 0.14-0.25 mm (such as 0.16mm), the equipment is started, the first valve 6, the second valve 7 and the vent valve 8 are automatically closed by the system, the compressed gas supply device 1 is automatically started by the system, when the pressure of outlet gas reaches 0.25MPa, the first valve 6 and the second valve 7 are automatically opened by the system, the liquid metal in the liquid storage tank 11 is pushed by air pressure, and the liquid metal is extruded by the compressed gas to flow out of the needle head 5 along the second pipeline 9 to the containing bottle 4. When the weighing capacity of the weighing device 3 reaches 400g, the control system adjusts the outlet pressure of the compressed gas supply device 1 to be reduced to 0.1MPa for filling. When the weighing capacity of the weighing device 3 reaches 500g, the control system closes the first valve 6, the second valve 7 and the compressed gas supply device 1, the liquid metal stops dripping, and the filling is finished. Each time parameter needs to be measured on site through the process requirement, and enters a system through HMI (human machine interface) setting for logic operation, and the data is used for demonstrating the device and the process performance on-site test.
Automatic circulating filling: when the system detects that the weighing device 3 measures the empty bottle weight, the system recognizes that the next filling is required.
Before filling, the sealing condition of the connecting part needs to be checked to ensure that the system is in a hot standby state, and then the system is started to carry out filling. The filling processes are realized by programming the PLC according to the process flow, wherein the filling processes of all branches can be respectively carried out without mutual interference, and each containing bottle enters the next cycle after being filled. According to the process flow, the system filling scale can be enlarged, and high-precision large-scale production is realized.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. The high-precision automatic liquid metal filling device is characterized by comprising a compressed gas supply device (1) and a liquid storage tank (11), wherein the compressed gas supply device (1) and the liquid storage tank (11) are communicated through a first pipeline (2), a containing bottle (4) is arranged at the outlet of the liquid storage tank (11), and the containing bottle (4) is placed on a weighing device (3).
2. A high-precision automatic liquid metal filling device according to claim 1, wherein the first pipeline (2) is provided with a first valve (6).
3. A high-precision automatic liquid metal filling device according to claim 1, wherein a second pipeline (9) is arranged at the outlet of the liquid storage tank (11), and a containing bottle (4) is arranged at the outlet of the second pipeline (9).
4. A high-precision automatic filling device for liquid metal according to claim 3, wherein said second pipe (9) is provided with a plurality of branches, each branch being provided with a respective bottle (4) at its outlet, each bottle (4) being provided on a respective weighing device (3).
5. A high-precision automatic filling device for liquid metal according to claim 4, characterized in that each of said branches is provided with a second valve (7).
6. A high-precision automatic liquid metal filling device according to claim 4, characterized in that a needle (5) is mounted at each branch outlet, and a bottle (4) is arranged below the needle (5).
7. A liquid metal high-precision automatic filling device according to claim 6, wherein the inner diameter of the needle head (5) ranges from 0.6mm to 1.0mm or from 0.14mm to 0.25 mm.
8. A high precision automatic liquid metal filling device according to claim 1, characterized in that said reservoir (11) is provided with a vent valve (8).
9. A high-precision automatic liquid metal filling device according to claim 1, characterized in that a support (10) is arranged below the liquid storage tank (11).
10. A high precision automatic liquid metal filling apparatus according to claim 1, wherein said compressed gas supply means (1) is filled with one of air, nitrogen and argon.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121426274.9U CN215249480U (en) | 2021-06-25 | 2021-06-25 | High-precision automatic filling device for liquid metal |
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| CN202121426274.9U CN215249480U (en) | 2021-06-25 | 2021-06-25 | High-precision automatic filling device for liquid metal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855584A (en) * | 2023-02-24 | 2023-03-28 | 西北大学 | High-resolution precipitation stable isotope sample automatic acquisition system and control method |
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2021
- 2021-06-25 CN CN202121426274.9U patent/CN215249480U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855584A (en) * | 2023-02-24 | 2023-03-28 | 西北大学 | High-resolution precipitation stable isotope sample automatic acquisition system and control method |
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