CN217314259U

CN217314259U - Quick-response solenoid valve type micro-liquid distribution device

Info

Publication number: CN217314259U
Application number: CN202220229194.2U
Authority: CN
Inventors: 马成稳; 王强; 王栋梁; 孙培
Original assignee: Changzhou Mingseal Robotic Technology Co Ltd
Current assignee: Changzhou Mingseal Robotic Technology Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-08-30
Anticipated expiration: 2032-01-27

Abstract

The utility model relates to a liquid distribution device technical field especially relates to a quick response's solenoid valve formula trace liquid distribution device, include: the liquid storage unit and the feeding pressure mechanism apply pressure to the liquid storage unit through the feeding pressure mechanism; a liquid flow passage is arranged in the middle squeezing chamber and is communicated with the liquid storage unit, a squeezing space is arranged between the outer wall of the liquid flow passage and the inner wall of the middle squeezing chamber, a positive pressure air inlet is arranged on the middle squeezing chamber, and the positive pressure air inlet is communicated with the squeezing space; the electromagnetic valve is positioned outside the middle squeezing chamber, and the outlet of the electromagnetic valve is communicated with the positive pressure air inlet. The utility model discloses a solenoid valve control lets in gaseous flow and velocity of flow for liquid flow channel's response speed and gaseous extrusion force to liquid flow channel, liquid flow channel fast compression and resilience in the twinkling of an eye at the break-make air current make the liquid flow channel response faster.

Description

Quick-response solenoid valve type micro-liquid distribution device

Technical Field

The utility model belongs to the technical field of liquid distributor, concretely relates to quick response's solenoid valve formula trace liquid distributor.

Background

At present, the application of the dispensing technology in many fields is more and more extensive, and the dispensing technology plays a crucial role from the welding, coating and sealing of semiconductor packaging, integrated circuit industry, SMT/PCB assembly to general industry. The dispensing technology is to dispense fluid to a designated position of a product, so as to realize functions of fixing, encapsulating, welding and the like of electronic components. In the electronic manufacturing process, when electronic components need to be assembled together, glue is distributed to a designated position by a glue dispensing technology to bond the components, so that the components are assembled; when the electronic components need to be connected with each other, the solder paste, the silver paste and the like are distributed to designated positions by a dispensing technology, so that the electronic components are connected.

The electronic packaging has higher and higher precision requirement and efficiency for dispensing, and the volume of the dispensing glue solution is smaller and smaller. Particularly, for the packaging of the semiconductor industry and the LED industry, the requirement on micron-sized high-precision micro-dispensing is very urgent. At present, micro-scale screw valves, injection valves and the like are mainly adopted for micro-dispensing at home and abroad, the minimum point diameter and the minimum line diameter of the injection valves can be 0.2mm, the minimum point diameter and the minimum line diameter of the screw valves can be 0.7mm, the glue valves with the point diameter or the line diameter of less than 200 mu m can be provided, and an extrusion type micro-liquid dispensing device is required. The only similar products in the market at home and abroad adopt a pneumatic type pulse pressure extrusion rubber hose method to realize micro glue output, and can be used for producing liquid point diameter and line diameter within the range of 80-200 mu m.

The pneumatic extrusion adopts the pressure of compressed gas to extrude the rubber hose to deform and shrink so as to extrude the glue, but the gas has compressibility, and the deformation response of the rubber hose is slow in the process of circulating the gas in the pipeline, and the applied extrusion force and the compression amount of the hose are difficult to accurately and quantitatively control and finely adjust.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a quick response's solenoid valve formula trace liquid distributor aims at solving because gaseous has the compressibility to gaseous in-process that circulates in the pipeline leads to the deformation response of rubber hose slow, and the extrusion force of applying and the difficult technical problem of accurate quantitative control and fine setting of the compressive capacity of hose.

According to the utility model discloses quick response's solenoid valve formula micro-liquid distributor, include:

a feed pressure mechanism;

a liquid storage unit which is connected with the feeding pressure mechanism to apply pressure to the liquid storage unit through the feeding pressure mechanism;

the liquid storage unit is arranged in the middle squeezing chamber, a liquid flow channel is arranged in the middle squeezing chamber and communicated with the liquid storage unit, a squeezing space is arranged between the outer wall of the liquid flow channel and the inner wall of the middle squeezing chamber, a positive pressure air inlet is arranged on the middle squeezing chamber and communicated with the squeezing space, and gas introduced from the positive pressure air inlet acts on the liquid flow channel to generate positive pressure on the liquid flow channel;

the needle head is communicated with the liquid flow passage;

the electromagnetic valve is positioned outside the middle squeezing chamber, and an outlet of the electromagnetic valve is communicated with the positive pressure air inlet.

The beneficial effects of the utility model are that, the utility model discloses a solenoid valve and passageway switch-on let in gaseous flow and velocity of flow through solenoid valve control, thereby accelerate liquid flow channel's response speed and gaseous extrusion force to liquid flow channel through the control of solenoid valve to gas flow and velocity of flow, liquid flow channel fast compression and resilience in the twinkling of an eye at the break-make air current, make liquid flow channel response faster.

According to the utility model discloses an embodiment, be provided with the passageway on the middle extrusion room, the one end and the solenoid valve export of passageway are linked together, the other end and the extrusion space of passageway are linked together.

According to the utility model discloses an embodiment, be provided with the negative pressure gas outlet on the middle extrusion room, the one end of negative pressure gas outlet with the extrusion space is linked together, the other end of negative pressure gas outlet is connected with negative pressure mechanism.

According to an embodiment of the present invention, the intermediate pressing chamber comprises: the upper channel valve body and the lower channel valve body are detachably and fixedly connected, the valve core assembly is installed in the upper channel valve body and the lower channel valve body so as to fix the valve core assembly through the upper channel valve body and the lower channel valve body, an elastic valve core hose is arranged in the valve core assembly, and the valve core hose is a liquid flow channel in the middle squeezing chamber.

According to the utility model discloses an embodiment, the liquid storage unit with go up passageway valve body threaded connection.

According to the utility model discloses an embodiment, case subassembly and the coaxial setting of liquid storage unit.

According to the utility model discloses an embodiment, go up passageway valve body and lower passageway valve body threaded connection.

According to the utility model discloses an embodiment, one side of middle extrusion room is provided with the constant temperature module that keeps to the temperature of middle extrusion room, constant temperature module with middle extrusion room links to each other or contacts in order to carry out temperature control to middle extrusion room.

According to the utility model discloses an embodiment, the outside of middle extrusion room is equipped with carries out the fixing base fixed to middle extrusion room, be provided with the step hole on the fixing base, the lower part of middle extrusion room is installed in the step hole, be equipped with the retaining member of fixing to middle extrusion room on the fixing base, the retaining member is inconsistent with the outer wall of middle extrusion room in order to fix middle extrusion room in the fixing base.

According to the utility model discloses an embodiment, liquid storage unit's outside is provided with rapid disassembly structure, rapid disassembly structure will liquid storage unit centre gripping is fixed, rapid disassembly structure and fixing base fixed connection.

According to the electromagnetic valve type micro-liquid distribution device with quick response, the feeding pressure mechanism exerts pressure on the liquid storage unit, so that liquid in the liquid storage unit flows out of the needle through the upper channel valve body, the hose in the valve core assembly and the lower channel valve body. The liquid is filled in the whole flow passage by controlling the pressure released by the feeding press. The electromagnetic valve is communicated with the middle squeezing chamber through a channel, the electromagnetic valve controls the on-off of air flow, the hose in the valve core assembly is applied with positive pressure to deform the hose, and liquid in the hose cavity in the valve core assembly is divided along two directions of the upper channel valve body and the lower channel valve body. Because the aperture of the needle is small, the resistance in the downward direction is larger than the resistance in the upward direction, and the output of a trace amount of liquid from the needle is realized at a certain pressure of the chamber.

The electromagnetic valve is directly communicated with the channel, so that the stroke of the channel is reduced, and the liquid channel is quickly compressed and rebounded at the moment of switching on and off the air flow, so that the liquid channel responds more quickly. And the electromagnetic valve is integrated to the valve body after, makes the valve body volume reduce, and the assembly is more convenient, and the structure is compacter, can be applicable to more models.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a front view of a rapid response solenoid-type micro-fluid dispensing device according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a rapid response solenoid-type micro-fluid dispensing device according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a portion of a fast response solenoid-type micro-fluid dispensing device in accordance with an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a fast-response solenoid-type micro-fluid dispensing device according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of a fast-response solenoid-type micro-fluid dispensing device according to embodiment 2 of the present invention.

Reference numerals:

1. a feed pressure mechanism; 2. a liquid storage unit; 3. a middle squeezing chamber; 4. a needle head; 5. an electromagnetic valve; 6. a quick release mechanism; 7. a constant temperature module; 8. a fixed seat; 9. an upper channel valve body; 10. a valve core assembly; 11. a locking member; 12. a lower channel valve body; 14. a seal ring; 15. a constant temperature module base plate; 16. an outlet of the solenoid valve; 17. a flow channel; 18. a seal ring; 19. the trachea.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

A solenoid-type micro-fluid dispensing device of the present invention is described in detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 4, the present invention provides a quick-response solenoid-type micro-liquid dispensing device, comprising: the device comprises a feeding pressure mechanism 1, a liquid storage unit, an intermediate squeezing chamber 3, a needle 4 and an electromagnetic valve 5, wherein the liquid storage unit and the feeding pressure mechanism 1 apply pressure to the liquid storage unit through the feeding pressure mechanism 1; a liquid flow channel 17 is arranged in the middle squeezing chamber 3, the liquid flow channel 17 is communicated with a liquid storage unit, a squeezing space is arranged between the outer wall of the liquid flow channel 17 and the inner wall of the middle squeezing chamber 3, a positive pressure air inlet is arranged on the middle squeezing chamber 3 and is communicated with the squeezing space, and gas introduced from the positive pressure air inlet acts on the liquid flow channel 17 to generate positive pressure on the liquid flow channel 17; the needle 4 is communicated with the liquid flow passage 17; the electromagnetic valve 5 is arranged on the middle squeezing chamber 3, and the outlet of the electromagnetic valve 5 is communicated with the positive pressure air inlet.

The utility model discloses a solenoid valve 5 and the direct switch-on of passageway reduce the 17 strokes of runner, and at the quick compression of rubber hose in the twinkling of an eye and resilience of break-make air current, make the rubber hose response faster. And solenoid valve 5 is integrated behind the valve body, makes the valve body volume reduce, and the assembly is more convenient, and the structure is compacter, can be applicable to more models.

In order to shorten the stroke of the gas flow, the intermediate pressing chamber 3 is provided with a passage, one end of which is communicated with the solenoid valve outlet 16, and the other end of which is communicated with the pressing space. The electromagnetic valve 5 is directly connected with a channel on the middle squeezing chamber 3, the path stroke of gas flow is short, gas can quickly enter into a squeezing space in the middle squeezing chamber 3, so that positive pressure squeezing effect can be quickly carried out on the liquid flow channel 17, the liquid flow channel 17 can respond at a quick speed, and the liquid outlet speed of the needle head 4 is quick.

A negative pressure air outlet is arranged on the middle extrusion chamber 3, one end of the negative pressure air outlet is communicated with the extrusion space, and the other end of the negative pressure air outlet is connected with a negative pressure mechanism. When the liquid distribution is finished and the flow needs to be cut off, the feeding pressure mechanism 1 inputs negative pressure in the liquid storage unit except for a certain negative pressure generated by the elastic rebound of the valve core hose, so that the liquid output by the needle head 4 is prevented from dripping and leaking. The negative pressure mechanism generates certain negative pressure from the negative pressure air outlet to expand the volume of the valve core hose in the valve core assembly 10, so that the effects of flow interruption and leakage prevention of the needle 4 are further enhanced.

The intermediate pressing chamber 3 includes: go up passageway valve body 9, case subassembly 10 and lower passageway valve body 12, go up passageway valve body 9 and lower passageway valve body 12 and can dismantle fixed connection, case subassembly 10 is installed in last passageway valve body 9 and lower passageway valve body 12 in order to fix case subassembly 10 through last passageway valve body 9 and lower passageway valve body 12, is equipped with elastic case hose in the case subassembly 10, and the case hose is the liquid flow channel 17 in middle squeezing chamber 3 promptly. The liquid storage unit is screwed with the upper passage valve body 9, thereby facilitating the mounting and dismounting between the liquid storage unit and the upper passage valve body 9. The valve core assembly 10 is arranged coaxially with the liquid storage unit, thereby improving the fluency of the liquid flowing between the liquid storage unit and the valve core assembly 10. The upper passage valve body 9 and the lower passage valve body 12 are screw-coupled, thereby facilitating the mounting and dismounting between the upper passage valve body 9 and the lower passage valve body 12.

The upper portion of the valve core assembly 10 is inserted into the upper channel valve body 9 and is abutted against the upper channel valve body 9, the lower portion of the valve core assembly 10 is inserted into the lower channel valve body 12 and is abutted against the lower channel valve body 12, and then the lower end of the upper channel valve body 9 and the upper end of the lower channel valve body 12 are in threaded connection to fix the valve core assembly 10 inside the upper channel valve body 9 and the lower channel valve body 12.

A constant temperature module 7 for maintaining the temperature of the intermediate pressing chamber 3 is arranged at one side of the intermediate pressing chamber 3, and the constant temperature module 7 is connected or contacted with the intermediate pressing chamber 3 to control the temperature of the intermediate pressing chamber 3. Be provided with constant temperature module bottom plate 15 on the constant temperature module 7, the outside in middle extrusion room 3 is installed in order to conveniently install constant temperature module 7 in constant temperature module 7 floor, and constant temperature module 7 can adopt the Peltier thermostat, and constant temperature module 7 cools down middle extrusion room 3 when middle extrusion room 3 high temperature, heats up middle extrusion room 3 when middle extrusion room 3 low temperature is crossed.

The outside of middle extrusion room 3 is equipped with carries out the fixing base 8 fixed to middle extrusion room 3, is provided with the step hole on the fixing base 8, and the lower part of middle extrusion room 3 is installed in the step hole, is equipped with on the fixing base 8 and carries out the retaining member 11 fixed to middle extrusion room 3, and retaining member 11 is inconsistent with the outer wall of middle extrusion room 3 in order to fix middle extrusion room 3 in fixing base 8. The outside of liquid memory cell is provided with rapid disassembly structure, and rapid disassembly structure fixes liquid memory cell centre gripping, and rapid disassembly structure and fixing base 8 fixed connection. The feeding pressure mechanism 1 is connected with the liquid storage unit through a sleeve head assembly, the sleeve head assembly is sleeved at the upper end of the liquid storage unit, and the sleeve head assembly is provided with a sealing structure to seal the upper end of the liquid storage unit. The electromagnetic valve 5 is connected with the fixed seat 8 through an electromagnetic valve 5 mounting plate, an electromagnetic valve outlet 16 is arranged on one side of the electromagnetic valve 5, and the electromagnetic valve outlet 16 and the flow channel 17 are sealed through a sealing ring 14.

Go up passageway valve body 9 and lower passageway valve body 12 threaded connection, guarantee case subassembly 10 and liquid memory cell coaxial arrangement back, the liquid memory cell blocks into the rapid disassembly structure earlier, then wholly packs into in the fixing base 8 perpendicularly and locks with retaining member 11 afterwards, retaining member 11 is the screw, and the outer wall through screw and middle extrusion chamber 3 is inconsistent in order to fix middle extrusion chamber 3 in fixing base 8.

The working principle is as follows: the feeding pressure mechanism 1 applies pressure to the liquid storage unit, so that the liquid in the liquid storage unit flows out from the needle 4 through the upper channel valve body 9, the hose in the valve core assembly 10 and the lower channel valve body 12. By controlling the amount of pressure released by the feed press, the liquid fills the entire flow channel 17. The electromagnetic valve 5 is communicated with the middle squeezing chamber 3 through a channel, the electromagnetic valve 5 controls the on-off of air flow, the hose in the valve core assembly 10 is deformed by applying positive pressure to the hose, and liquid in the hose cavity in the valve core assembly 10 is divided along two directions of the upper channel valve body 9 and the lower channel valve body 12. Because the aperture of the needle 4 is small, the resistance in the downward direction is larger than the resistance in the upward direction, and the output of a trace amount of liquid from the needle 4 is realized at a certain pressure of the chamber. The deformation of the valve core hose is controlled through gas, the whole cavity is filled with the gas, the gas acts on the outer surface of the valve core hose, the acting surface is large, the stress of the whole valve core hose is uniform, the aging speed of the valve core hose can be effectively reduced, and the accuracy and the long-term stability of the glue discharging amount are guaranteed.

The electromagnetic valve 5 is directly communicated with the channel, so that the stroke of the flow channel 17 is reduced, and the rubber hose is quickly compressed and rebounded at the moment of switching on and off air flow, so that the response of the rubber hose is quicker. And solenoid valve 5 is integrated behind the valve body, makes the valve body volume reduce, and the assembly is more convenient, and the structure is compacter, can be applicable to more models.

Example 2

Referring to fig. 5, the main difference with the embodiment is that the electromagnetic valve 5 is connected with the middle squeezing chamber 3 through the air pipe 19, specifically, the outlet of the electromagnetic valve 5 is communicated with the positive pressure air inlet through the air pipe 19, which has the advantages that the electromagnetic valve 5 can be installed at other positions at will, the position of the electromagnetic valve is more flexible, and after the electromagnetic valve is separated from the middle squeezing chamber, the volume of the squeezing valve body is smaller, the structure is more compact, and the assembly is simple and easy to operate.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rapid response solenoid-valve type micro-fluid dispensing device, comprising: the method comprises the following steps:

a feed pressure mechanism (1);

a liquid storage unit which is connected with the feeding pressure mechanism (1) to apply pressure to the liquid storage unit through the feeding pressure mechanism (1);

the liquid storage device comprises a middle squeezing chamber (3), wherein a liquid flow channel (17) is arranged inside the middle squeezing chamber (3), the liquid flow channel (17) is communicated with a liquid storage unit, a squeezing space is arranged between the outer wall of the liquid flow channel (17) and the inner wall of the middle squeezing chamber (3), a positive pressure air inlet is arranged on the middle squeezing chamber (3), the positive pressure air inlet is communicated with the squeezing space, and gas introduced from the positive pressure air inlet acts on the liquid flow channel (17) to generate positive pressure on the liquid flow channel (17);

the needle head (4), the said needle head (4) is communicated with liquid flow path (17);

the electromagnetic valve (5) is located outside the middle squeezing chamber (3), and an outlet of the electromagnetic valve (5) is communicated with the positive pressure air inlet.

2. A rapid response solenoid valve type micro-fluid dispensing device as defined in claim 1, wherein: a channel is arranged on the middle extrusion chamber (3), one end of the channel is communicated with an outlet of the electromagnetic valve (5), and the other end of the channel is communicated with the extrusion space.

3. A rapid response solenoid valve type micro-fluid dispensing device as defined in claim 1, wherein: a negative pressure air outlet is arranged on the middle extrusion chamber (3), one end of the negative pressure air outlet is communicated with the extrusion space, and the other end of the negative pressure air outlet is connected with a negative pressure mechanism.

4. A rapid response solenoid valve type micro-fluid dispensing device as defined in claim 1, wherein: the intermediate pressing chamber (3) comprises: the valve core assembly comprises an upper channel valve body (9), a valve core assembly (10) and a lower channel valve body (12), wherein the upper channel valve body (9) and the lower channel valve body (12) are detachably and fixedly connected, the valve core assembly (10) is installed in the upper channel valve body (9) and the lower channel valve body (12) to fix the valve core assembly (10) through the upper channel valve body (9) and the lower channel valve body (12), an elastic valve core hose is arranged in the valve core assembly (10), and the valve core hose is a liquid flow channel (17) in a middle squeezing chamber (3).

5. A fast-response solenoid-valve type micro-fluid dispensing device according to claim 4, wherein: the liquid storage unit is in threaded connection with the upper channel valve body (9).

6. A fast-response solenoid valve type micro-fluid dispensing device according to claim 5, wherein: the valve core assembly (10) is arranged coaxially with the liquid storage unit.

7. A fast-response solenoid valve type micro-fluid dispensing device according to claim 6, wherein: the upper channel valve body (9) is in threaded connection with the lower channel valve body (12).

8. A rapid response solenoid valve type micro-fluid dispensing device according to claim 1, wherein: a constant temperature module (7) for keeping the temperature of the middle extrusion chamber (3) is arranged on one side of the middle extrusion chamber (3), and the constant temperature module (7) is connected with or contacted with the middle extrusion chamber (3) to control the temperature of the middle extrusion chamber (3).

9. A rapid response solenoid valve type micro-fluid dispensing device as defined in claim 1, wherein: the outside of middle extrusion room (3) is equipped with carries out fixed fixing base (8) to middle extrusion room (3), be provided with the step hole on fixing base (8), the lower part of middle extrusion room (3) is installed in the step hole, be equipped with on fixing base (8) and carry out fixed retaining member (11) to middle extrusion room (3), retaining member (11) are inconsistent in order to fix middle extrusion room (3) in fixing base (8) with the outer wall of middle extrusion room (3).

10. A rapid response solenoid valve type micro-fluid dispensing device according to claim 9, wherein: the liquid storage unit is clamped and fixed by a quick-release structure which is fixedly connected with a fixed seat (8).