CN111842028A - Double-servo plunger type quantifying machine - Google Patents
Double-servo plunger type quantifying machine Download PDFInfo
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- CN111842028A CN111842028A CN202010776531.5A CN202010776531A CN111842028A CN 111842028 A CN111842028 A CN 111842028A CN 202010776531 A CN202010776531 A CN 202010776531A CN 111842028 A CN111842028 A CN 111842028A
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- glue
- metering mechanism
- monitoring system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1026—Valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1036—Means for supplying a selected one of a plurality of liquids or other fluent materials, or several in selected proportions, to the applying apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
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Abstract
The invention relates to the field of quantitative equipment, in particular to a double-servo plunger type quantitative machine, which comprises a power mechanism, a metering mechanism, a feed valve, a flow monitoring system for monitoring various parameters of fluid and a mixing valve, wherein the metering mechanism is arranged on the lower end of the power mechanism; the metering mechanism is movably arranged on the power mechanism; the feeding valve and the metering mechanism can be arranged in a communicating manner; the flow monitoring system and the metering mechanism can be arranged in a communicating way; the mixing valve is disposed in communication with the flow monitoring system. On one hand, through the integrated design of the flow monitoring system and the quantifying machine, no pipeline is needed to be arranged between the quantifying machine and the flow monitoring system, namely, no pressure loss is generated when fluid flows, and the flow monitoring system can monitor technological parameters such as glue discharging proportion, glue discharging amount, glue discharging speed and the like in real time, so that the glue mixing accuracy and the glue filling degree can be improved; on the other hand, the automatic glue mixing and glue injecting device also improves the automatic operation level of glue injection and glue mixing, and solves the problems of high labor intensity and low production efficiency of manual glue mixing.
Description
Technical Field
The invention relates to the technical field of quantifying equipment, in particular to a double-servo plunger type quantifying machine.
Background
With the progress of science and technology, the requirements of manufactured products are more and more precise, and the requirements of production enterprises on the glue dispensing process of mixed glue are higher and higher. In the traditional production process, manual glue mixing is mainly used, operators need to pour the filling glue A and the filling glue B into a glue mixing cup in a specified proportion, then the glue is fully mixed by continuously stirring a glue mixing rod, and the mixed glue AB is coated on parts by a glue dispensing rod. However, because the setting time after the AB glue is mixed is usually short, in order to avoid causing the waste of glue, the operator can only mix the glue amount that can be used up in a certain time, which results in a higher labor intensity of the operator, and the glue mixing proportion and the filling degree are easy to be unstable (especially when the glue amount is larger), which finally results in the problems of bad glue joint of the product parts, low production efficiency and reduced product yield.
Disclosure of Invention
Aiming at the technical problems, the invention provides a double-servo plunger type quantifying machine, which solves the problems that the labor intensity of operators is higher due to manual glue mixing and the glue mixing proportion and the filling degree are easy to be unstable in the prior art, and avoids the conditions of poor gluing of product parts, low production efficiency and reduced product yield.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a double-servo plunger type quantifying machine which comprises a power mechanism, a metering mechanism, a feeding valve, a flow monitoring system and a mixing valve, wherein the flow monitoring system is used for monitoring various parameters of fluid; the metering mechanism is detachably arranged on the power mechanism and movably arranged on the power mechanism; the feeding valve is detachably arranged on the metering mechanism, and the feeding valve and the metering mechanism can be arranged in a communicating manner; the flow monitoring system is detachably arranged on the metering mechanism, and the flow monitoring system and the metering mechanism can be arranged in a communicating manner; the mixing valve is detachably arranged on the metering mechanism, and the mixing valve and the flow monitoring system can be arranged in a communicating mode.
The invention provides a double-servo plunger type quantifying machine, further comprising a plunger cylinder, a plunger rod and a plunger rod guide sleeve, wherein the plunger cylinder is arranged in the plunger cylinder; the plunger type cylinder is detachably fixed on the power mechanism; one end of the plunger rod is detachably fixed on the power mechanism; the plunger rod is movably arranged in the plunger cylinder in the axial direction in a penetrating way through the power mechanism; the plunger rod guide sleeve is fixedly arranged in the plunger cylinder, and the plunger rod movably penetrates through the plunger rod guide sleeve.
The invention provides a double-servo plunger type quantifying machine, further comprising a shaft seal, an oil seal and a lubricating liquid observation tube; the shaft seal is tightly arranged in the plunger cylinder, the plunger rod is tightly connected with the shaft seal, and the plunger rod is movably arranged on the shaft seal in a penetrating way; the oil seal is tightly arranged in the plunger cylinder, the plunger rod is tightly connected with the oil seal, and the plunger rod can movably penetrate through the oil seal; the lubricating liquid observation pipe is arranged on the plunger cylinder in a communicating manner.
The invention provides a double-servo plunger type quantitative machine, wherein the diameter of the plunger cylinder is 2mm larger than that of the plunger rod.
The invention provides a double-servo plunger type quantitative machine, further comprising a gear type flowmeter, wherein the gear type flowmeter is arranged in the flow monitoring system; the gear type flowmeter and the metering mechanism are in an integrated structure; the gear type flowmeter and the metering mechanism can be arranged in a communicating manner; the geared flow meter is communicably disposed with the mixing valve.
The invention provides a double-servo plunger type quantifying machine, further comprising a servo motor, a speed reducer, a synchronizing wheel, a synchronous belt, a transmission nut and a transmission screw rod, wherein the servo motor is arranged on the power mechanism; the servo motor is in transmission connection with the speed reducer; the synchronous wheel is in transmission connection with the servo motor; the synchronous belt is in transmission connection with the synchronous wheel and is of a turn-back type mounting structure; the transmission nut is in transmission connection with the transmission screw rod; one end of the transmission screw rod is movably connected with the metering mechanism.
The invention provides a double-servo plunger type quantifying machine, further, the power mechanism also comprises a guide shaft and a guide film; the guide shaft is detachably sleeved on the transmission screw rod through the transmission nut and the transmission slide block; the guide film is detachably sleeved on the guide shaft.
The invention provides a double-servo plunger type quantifying machine, further comprising a feeding valve, a feeding valve and a control valve, wherein the feeding valve comprises a cylinder body and an electromagnetic valve; the cylinder body and the electromagnetic valve are in an integrated structure; the cylinder body and the metering mechanism are communicably disposed.
The invention provides a double-servo plunger type quantifying machine, further comprising a valve needle, a rubber inlet seat and a sealing seat; one end of the valve needle is fixedly arranged in the cylinder body, the other end of the valve needle is a free end, and the free end of the valve needle is of a spherical structure; the glue inlet seat is tightly connected to the bottom of the cylinder body; the sealing seat is detachably fixed at the bottom of the rubber inlet seat; the valve needle can be arranged on the rubber inlet seat and the sealing seat in a penetrating manner; the contact action surface between the valve needle and the sealing seat is an inverted conical curved surface; the free end of the valve needle and the inverted conical curved surface form a line contact type sealing structure.
The invention provides a double-servo plunger type quantifying machine, further comprising a proximity sensor, wherein the proximity sensor is arranged on the feeding valve; the proximity sensor is detachably arranged on the cylinder body.
The technical scheme has the following advantages or beneficial effects:
the invention provides a double-servo plunger type quantifying machine which comprises a power mechanism, a metering mechanism, a feeding valve, a flow monitoring system and a mixing valve, wherein the flow monitoring system is used for monitoring various parameters of fluid; the metering mechanism is detachably arranged on the power mechanism and movably arranged on the power mechanism; the feeding valve is detachably arranged on the metering mechanism and can be communicated with the metering mechanism; the flow monitoring system is detachably arranged on the metering mechanism and can be communicated with the metering mechanism; the mixing valve is detachably arranged on the metering mechanism, and the mixing valve and the flow monitoring system can be arranged in a communicating mode. According to the invention, through the introduction of the flow monitoring system, on one hand, the flow monitoring system and the quantifying machine are integrally designed, no pipeline is arranged between the quantifying machine and the flow monitoring system, namely, no pressure loss is generated when fluid flows, and the flow monitoring system can monitor the glue outlet proportion, the glue outlet quantity, the glue outlet speed and other process parameters in real time, so that the accuracy of the glue mixing proportion and the mixing fullness can be improved to a greater extent, and the conditions of poor gluing of product parts and reduction of the product yield are avoided; on the other hand, through the introduction of power unit, feed valve, metering mechanism and mixing valve, glue gets into the back from the feed valve, and power unit can constantly pour into and fill the glue that needs mix to metering mechanism in, comes out by the mixing tube mouth of pipe of mixing valve again, and whole process is automatic operation to replaced loaded down with trivial details artifical gluey operation of mixing, solved artifical gluey intensity of labour that leads to operating personnel great, problem that production efficiency is low.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic diagram showing the three-dimensional structure of a double-servo plunger-type quantitative measuring machine provided in example 1 of the present invention;
FIG. 2 is a front view of a double servo plunger type quantitative measuring machine provided in embodiment 1 of the present invention;
FIG. 3 is a full sectional view of a double servo plunger type quantitative measuring machine provided in embodiment 1 of the present invention in a C-C cutting direction;
FIG. 4 is a left side view of a dual servo plunger type quantitative measuring machine provided in embodiment 1 of the present invention;
FIG. 5 is a full sectional view of a double servo plunger type quantitative measuring machine provided in embodiment 1 of the present invention in a D-D cutting direction;
FIG. 6 is a plan view of a double servo plunger type quantitative measuring machine provided in embodiment 1 of the present invention;
FIG. 7 is a schematic diagram of the installation structure of the plunger rod, the plunger rod guide sleeve, the shaft seal and the oil seal of the dual servo plunger type quantitative machine provided in embodiment 1 of the present invention;
FIG. 8 is a schematic diagram showing the three-dimensional structure of a feed valve in a double-servo plunger-type quantitative measuring machine provided in example 2 of the present invention;
FIG. 9 is a front view of a feed valve in a double servo plunger type quantitative measuring machine provided in embodiment 2 of the present invention;
FIG. 10 is a full sectional view of a feed valve in a double servo plunger type quantitative measuring machine provided in example 2 of the present invention, taken along the direction B-B;
FIG. 11 is a left side view of a feed valve in a dual servo plunger type quantitative measuring machine provided in embodiment 2 of the present invention;
FIG. 12 is a plan view of a feed valve in a double servo plunger type quantitative measuring machine provided in embodiment 2 of the present invention;
FIG. 13 is a schematic diagram showing the three-dimensional structure of a mixing valve in a double-servo plunger-type weighing apparatus provided in example 3 of the present invention;
FIG. 14 is a front view of a mixing valve in a double servo plunger type quantitative measuring machine provided in embodiment 3 of the present invention;
FIG. 15 is a left side view of a mixing valve in a double servo plunger type quantitative measuring machine provided in embodiment 3 of the present invention;
FIG. 16 is a plan view of a mixing valve in a double servo plunger type quantitative measuring machine provided in embodiment 3 of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As used herein, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the positional or orientational relationship illustrated in the figures to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.
The appearances of the terms first, second, and third, if any, are used for descriptive purposes only and are not intended to be limiting or imply relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention are described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, belong to the protection scope of the invention.
Example 1:
in the traditional production process, manual glue mixing is mainly used, operators need to pour the filling glue A and the filling glue B into a glue mixing cup in a specified proportion, then the glue is fully mixed by continuously stirring a glue mixing rod, and the mixed glue AB is coated on parts by a glue dispensing rod. However, because the setting time after the AB glue is mixed is usually short, in order to avoid causing the waste of glue, the operator can only mix the glue amount that can be used up in a certain time, which results in a higher labor intensity of the operator, and the glue mixing proportion and the filling degree are easy to be unstable (especially when the glue amount is larger), which finally results in the problems of bad glue joint of the product parts, low production efficiency and reduced product yield.
The glue mixing device aims to solve the problems that manual glue mixing is adopted to cause higher labor intensity of operators and unstable glue mixing proportion and filling degree are easily caused in the prior art, and the conditions that parts of products are poorly glued, the production efficiency is low and the product yield is reduced are avoided. A double-servo plunger type quantitative machine provided by embodiment 1 of the present invention, as shown in fig. 1 to 7, includes a power mechanism 1, a metering mechanism 2, a feed valve 3, a flow monitoring system 4 for monitoring various parameters of a fluid, and a mixing valve 5; the metering mechanism 2 is detachably arranged on the power mechanism 1, and the metering mechanism 2 is movably arranged on the power mechanism 1; the feeding valve 3 is detachably arranged on the metering mechanism 2, and the feeding valve 3 and the metering mechanism 2 can be arranged in a communicating manner; the flow monitoring system 4 is detachably arranged on the metering mechanism 2, and the flow monitoring system 4 and the metering mechanism 2 can be arranged in a communicating manner; the mixing valve 5 is detachably arranged on the metering mechanism 2, and the mixing valve 5 is arranged in communication with the flow monitoring system 4.
Before glue mixing, parameters such as glue consumption, proportion, speed and the like of different required glues (in the embodiment, two different glues are specifically needed to be set, namely glue A and glue B, wherein the glue A and the glue B specifically comprise but are not limited to bi-component acrylic acid, modified silane, polyurethane, epoxy resin, heat-conducting glue, silica gel and the like), after all data are set, the feeding valve 3 works to start feeding, the different glues respectively enter from the corresponding feeding ports on the feeding valve 3, and then the power mechanism 1 works to respectively inject and fill the different glues into the metering mechanism 2; after feeding is finished, a gluing process is started, the mixing valve 5 is opened, the mixing valve starts to operate according to the set parameters such as glue outlet speed, glue outlet proportion and weight, glue A and glue B come out from the outlet of the mixing pipe on the mixing valve 5, glue mixing is finished, the flow monitoring system 4 synchronously operates in the process that the glue A and the glue B are injected into the metering mechanism 2, the parameters such as the glue inlet amount, proportion and speed of the glue A and the glue B are monitored in real time and can be compared with the preset parameters of the system, and the system can acquire and store all data into the MAS system.
According to the invention, through the introduction of the flow monitoring system 4, on one hand, the flow monitoring system 4 and the quantifying machine are integrally designed, no pipeline is required to be arranged between the quantifying machine and the flow monitoring system 4, namely, no pressure loss is generated when fluid flows, the flow monitoring system 4 can monitor the glue outlet ratio, the glue outlet quantity, the glue outlet speed and other process parameters in real time, so that the accuracy of the glue mixing ratio and the mixing fullness can be improved to a greater extent, and the conditions of poor gluing of product parts and reduced product yield are avoided; on the other hand, through the introduction of power unit 1, feed valve 3, metering mechanism 2 and mixing valve 5, glue gets into the back from feed valve 3, and power unit 1 can constantly pour into and fill the glue that needs mix to metering mechanism 2 in, comes out by the mixing tube mouth of mixing valve 5 again, and whole process is automatic operation to replaced loaded down with trivial details artifical muddy gluey operation, it is great to have solved artifical muddy gluey intensity of labour who leads to operating personnel, the problem that production efficiency is low. It is worth noting that the double-servo plunger type quantifying machine provided by the invention can also be used for single-component fluid metering and gluing; the separate inlet valve 3 can be used for gluing, dispensing, feeding, combining the mixing valve 5 and shut-off valves etc. In addition, the flow monitoring system 4 can also upload the acquired process parameters to the MAS system, so that data tracing in the industry 4.0 is realized, and a data research basis is further provided for subsequent improvement and optimization of a quantitative machine.
In order to achieve accurate glue mixing ratio, glue discharging amount and glue discharging speed, further, as shown in fig. 5 and 7, the metering mechanism 2 includes a plunger cylinder 21, a plunger rod 22 and a plunger rod guide sleeve 23; the plunger cylinder 21 is detachably fixed on the power mechanism 1; one end of the plunger rod 22 is detachably fixed on the power mechanism 1; the plunger rod 22 is movably arranged in the plunger cylinder 21 in the axial direction through the power mechanism 1; the plunger rod guide sleeve 23 is fixedly arranged in the plunger cylinder 21, and the plunger rod 22 is movably arranged on the plunger rod guide sleeve 23 in a penetrating way.
After the setting of parameters such as glue consumption, proportion, speed and the like of different glues is finished, the two feeding valves 3 are opened to start feeding, the plunger rod 22 moves back at the lowest position, the fed materials are filled to the bottom of the plunger cylinder 21, after the feeding is finished, the feeding valves 3 are closed, the quantifying machine carries out pre-pressing operation to enable the fluid pressure in the plunger cylinder 21 to be increased or reduced to reach a preset pressure value, pressure monitoring is carried out in the whole feeding and metering process, the pre-pressing operation can guarantee the pressure balance in the whole feeding and metering process, and the accuracy of glue mixing proportion, glue output and glue output speed is further guaranteed; in addition, the double-servo plunger type quantitative machine provided by the invention adopts a first-in first-out feeding principle, namely, the firstly filled glue is discharged firstly when glue injection is started, so that the phenomenon that the glue is easy to deteriorate after being left in the quantitative machine for a long time can be avoided.
It should be mentioned that the use of the plunger cylinder 21 and the plunger rod 22 can also expand the application range of the quantitative machine, in this embodiment, the plunger cylinder 21 and the plunger rod 22 with appropriate sizes can be specifically selected according to the parameters such as the property, the glue yield ratio, the speed, and the like of the actually used two-component glue, and the applicable specific ratio range of the quantitative machine is as follows: 100: 100-100: 10. Specifically, the plunger rod guide sleeve 23 is arranged to ensure the coaxiality of the plunger rod 22 during the up-and-down reciprocating operation in the plunger cylinder 21, so as to ensure the working reliability of the metering mechanism 2 and prolong the service life of the metering mechanism.
In order to ensure the sealing performance of the metering mechanism 2 during operation, further, as shown in fig. 1-7, the metering mechanism 2 further comprises a shaft seal 24, an oil seal 25 and a lubricating fluid observation tube 26; the shaft seal 24 is tightly arranged in the plunger cylinder 21, the plunger rod 22 is tightly connected with the shaft seal 24, and the plunger rod 22 is movably arranged on the shaft seal 24 in a penetrating way; the oil seal 25 is tightly arranged in the plunger cylinder 21, the plunger rod 22 is tightly connected with the oil seal 25, and the plunger rod 22 is movably arranged on the oil seal 25 in a penetrating way; the lubricating liquid observation tube 26 is provided in the plunger cylinder 21 so as to be communicable therewith.
In the working process of the metering mechanism 2, namely the whole process of injecting and filling glue into the metering mechanism 2, the overall sealing performance of the metering mechanism 2 is crucial, and by arranging the shaft seals 24 and the oil seals 25, particularly two high-pressure shaft seals 24 and one oil seal 25, the overall sealing performance of the metering mechanism 2 can be effectively improved. In addition, metering mechanism 2 adopts liquid lubricating oil to lubricate, and the setting up of lubricated liquid observation tube 26 makes when the phenomenon is revealed to the ration machine emergence, operating personnel can observe the lubricating oil through transparent lubricated liquid observation tube 26 directly perceivedly and reveal the phenomenon (specifically for intraductal lubricating oil takes place the phenomenon of discolouring), then indicate that lubricated liquid has been polluted this moment, operating personnel only need in time change plunger rod uide bushing 23, parts such as bearing seal 24 or oil blanket 25 can, thereby lubricated liquid observation tube 26's design can reduce operating personnel to the holistic maintenance degree of difficulty of equipment to a great extent.
In order to extend the service life of the metering mechanism 2, the diameter of the plunger cylinder 21 is further 2mm larger than the diameter of the plunger rod 22. By providing the diameter of the plunger cylinder 21 which is 2mm larger than the diameter of the plunger rod 22, the properties of the glue do not need to be considered in the process of fluid delivery and metering of the plunger rod 22, and even if the density of the glue is high, the phenomenon of friction between the plunger rod 22 and the plunger cylinder 21 does not occur, i.e. the friction between the glue and the plunger rod 22 and the plunger cylinder 21 is reduced, thereby prolonging the service life of the metering mechanism 2.
In order to improve the metering accuracy of the flow monitoring system 4, further, as shown in fig. 2 to 6, the flow monitoring system 4 includes, but is not limited to, a gear-type flow meter 41, and specifically, a screw-type flow meter; the gear type flowmeter 41 and the metering mechanism 2 are in an integrated structure; the gear type flowmeter 41 is provided so as to be communicable with the metering mechanism 2; the gear type flowmeter 41 is provided communicably with the mixing valve 5. The gear type flowmeter 41 has high metering precision and is suitable for measuring the flow of high-viscosity media, so that the accuracy of data monitoring of the flow monitoring system 4 can be effectively improved by arranging the gear type flowmeter 41, the gear type flowmeter 41 and the metering mechanism 2 are in an integrated structure, and no pipeline is arranged between the metering mechanism 2 and the gear type flowmeter 41, namely no pressure loss is generated when any fluid flows, so that the metering precision of the flow monitoring system 4 is further improved, and a foundation is provided for obtaining accurate metering parameters.
In order to improve the working stability of the power mechanism 1, further, as shown in fig. 2 to 5, the power mechanism 1 includes a servo motor 11, a speed reducer 12, a synchronous wheel 13, a synchronous belt 14, a transmission nut 15 and a transmission screw 16; the servo motor 11 is in transmission connection with the speed reducer 12; the synchronous wheel 13 is in transmission connection with the servo motor 11; the synchronous belt 14 is in transmission connection with the synchronous wheel 13, and the synchronous belt 14 is of a turn-back type mounting structure; the transmission nut 15 is in transmission connection with a transmission screw rod 16; one end of the drive screw 16 is movably connected to the metering mechanism 2. When the power mechanism 1 works, namely the servo motor 11 and the speed reducer 12 work to drive the synchronous wheel 13 to rotate, the synchronous wheel 13 rotates to drive the synchronous belt 14 to drive, and the transmission nut 15 and the transmission screw rod 16 move in a matching manner, so that the up-and-down reciprocating motion of the plunger rod 22 is completed to realize continuous glue injection and metering actions. Through above-mentioned power setting, it not only has higher transmission stability, small intermittent type and higher operational reliability, and under high speed drive, power unit 1 is holistic operating noise littleer moreover. In addition, by the arrangement of the turning-back installation of the synchronous belt 14, the overall installation space occupation and the disassembly and assembly difficulty of the power mechanism 1 can be greatly reduced (the direct connection installation can be adopted when the installation size is not considered). The power mechanism 1 in this embodiment is specifically a servo drive, and the drive mode may be a variable frequency drive, a stepping motor, a speed-regulating motor, or the like, and specifically, an appropriate drive mode may be selected according to an actual use scenario and conditions.
In consideration of the guiding performance requirement of the servo electric cylinder during working, further, as shown in fig. 3, the power mechanism 1 further comprises a guiding shaft 17 and a guiding film 18; the guide shaft 17 is detachably sleeved on the transmission screw rod 16 through the transmission nut 15 and the transmission slide block 19; the guide film 18 is detachably sleeved on the guide shaft 17. The guide shaft 17 has the following specific functions: (1) the guide function is realized when the transmission screw rod 16 and the transmission nut 15 move; (2) and supporting the servo electric cylinder. The guide film 18 has higher precision, and particularly has higher precision compared with a guide sleeve, so that the arrangement of the guide film 18 can further ensure higher guidance performance requirement when the servo electric cylinder works; in addition, the motion abrasion loss of the transmission screw rod 16 can be effectively reduced by matching the transmission nut 15 and the transmission slide block 19, so that the motion of the transmission screw rod 16 is more sensitive and smooth, and the service life of the servo electric cylinder is further prolonged.
Example 2
In order to facilitate the accurate control of the glue outlet amount, the glue outlet ratio and the glue outlet speed of the feed valve 3, further, as shown in fig. 8-12, the feed valve 3 comprises a cylinder body 31 and an electromagnetic valve 32; the cylinder body 31 and the electromagnetic valve 32 are in an integrated structure; the cylinder body 31 is provided communicably with the metering mechanism 2. Through the design of integrated form solenoid valve 32 for solenoid valve 32 and cylinder body 31 are the integral type structure, do not have the trachea of any intercommunication between the two promptly, thereby have avoided the delay nature problem when the cylinder opens and close, provide the basis for realizing that feed valve 3 goes out gluey volume, goes out gluey proportion and the accurate control of gluey speed.
Valve needles 33 for inlet valves 3 are currently available in the form of tie rods or V-shaped ends, and these types of valve needles 33 discharge more fluid during the closing of the valve body, thereby causing a large pressure loss, which is a non-negligible problem for inlet valves 3, and therefore, in order to solve this problem, further, as shown in fig. 10, inlet valve 3 further includes valve needle 33, glue inlet seat 34 and seal seat 35; one end of the valve needle 33 is fixedly arranged in the cylinder body 31, the other end of the valve needle 33 is a free end, and the free end of the valve needle 33 is of a spherical structure; the glue inlet seat 34 is tightly connected to the bottom of the cylinder body 31; the sealing seat 35 is detachably fixed at the bottom of the glue inlet seat 34; the valve needle 33 can be arranged on the rubber inlet seat 34 and the sealing seat 35 in a penetrating way; the contact action surface between the valve needle 33 and the sealing seat 35 is an inverted conical curved surface; the free end of the valve needle 33 may form a line contact type sealing structure with the reverse tapered curved surface. Through setting up the contact action face between needle 33 and seal receptacle 35 to be the back taper curved surface, when the intimate contact between needle 33 tip and seal receptacle 35, that is, when needle 33 closed and cut off the outflow state of fluid, at this moment, be tangent state between needle 33 tip and seal receptacle 35, that is to say, be the line contact type sealed between needle 33 tip and the seal receptacle 35, the free end of needle 33 only has less volume to be in the outside of sealed region, thereby under the volume exchange principle, only very little fluid is ejected in the moment that needle 33 closed, great pressure loss phenomenon has been avoided. Therefore, the valve needle 33 with the structure is applied to dispensing valves, particularly the feed valve 3 and the mixing valve 5, the control precision is higher, the fluid can be cut off quickly, and the advantages are obvious.
Considering that the valve needle 33 and the seal seat 35 are in a working environment requiring long-term contact collision, the valve needle 33 and the seal seat 35 have large abrasion loss and relatively short service life, and in the prior art, the valve needle 33 is usually made of a metal material, and the seal seat 35 is usually made of a non-metal material, and the sealing performance between the valve needle 33 and the seal seat 35 is not very good, so that in order to prolong the service life of the valve needle 33 and the seal seat 35 on the premise of ensuring the sealing performance between the valve needle 33 and the seal seat 35, further, the valve needle 33 and the seal seat 35 are both made of a high-strength material, such as a tungsten steel material, and have equivalent strength and good wear resistance, and the valve needle 33 and the seal seat 35 are not easy to collide and deform, so that good sealing performance can be maintained for a.
Since the stroke of the air cylinder is short, only 3.5mm, and the short distance magnetic switch is difficult to detect the position of the air cylinder, in order to further facilitate the accurate control of the glue outlet amount, the glue outlet ratio and the glue outlet speed of the feed valve 3, further, as shown in fig. 8-12, the feed valve 3 further comprises a proximity sensor 36; the proximity sensor 36 is detachably provided on the cylinder body 31. The proximity sensor 36 can detect the specific position of the cylinder piston, so as to determine the action state of the cylinder piston, and thus determine the specific position of the valve needle 33, and finally determine the opening and closing state of the feed valve 3, thereby further providing a basis for realizing automatic and accurate control of the glue outlet amount, the glue outlet ratio and the glue outlet speed of the feed valve 3. Specifically, the proximity sensor 36 may also be another type of position sensor, an ultrasonic sensor, or the like.
Example 3
On the basis of example 2, as shown in fig. 13 to 16, the mixing valve 5 is designed integrally with a plurality of feed valves 3. The mixing valve 5 in this embodiment is specifically obtained by integrating and designing the two feeding valves 3, and the mixing valve 5 obtained by integrating the two feeding valves 3 can be used independently, can also be used in combination with any two-component static mixing system, and can be used in combination according to actual use scenes and conditions.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A double-servo plunger type quantitative machine is characterized by comprising a power mechanism, a metering mechanism, a feeding valve, a flow monitoring system and a mixing valve, wherein the flow monitoring system is used for monitoring various parameters of fluid;
the metering mechanism is detachably arranged on the power mechanism and movably arranged on the power mechanism; the feeding valve is detachably arranged on the metering mechanism, and the feeding valve and the metering mechanism can be arranged in a communicating manner; the flow monitoring system is detachably arranged on the metering mechanism, and the flow monitoring system and the metering mechanism can be arranged in a communicating manner; the mixing valve is detachably arranged on the metering mechanism, and the mixing valve and the flow monitoring system can be arranged in a communicating mode.
2. The dual servo plunger-type dosing machine of claim 1, wherein the metering mechanism comprises a plunger cylinder, a plunger rod and a plunger rod guide sleeve; the plunger type cylinder is detachably fixed on the power mechanism; one end of the plunger rod is detachably fixed on the power mechanism; the plunger rod is movably arranged in the plunger cylinder in the axial direction in a penetrating way through the power mechanism; the plunger rod guide sleeve is fixedly arranged in the plunger cylinder, and the plunger rod movably penetrates through the plunger rod guide sleeve.
3. The dual servo plunger-type dosing machine of claim 2 wherein the metering mechanism further comprises a shaft seal, an oil seal, and a lubricating fluid sight tube; the shaft seal is tightly arranged in the plunger cylinder, the plunger rod is tightly connected with the shaft seal, and the plunger rod is movably arranged on the shaft seal in a penetrating way; the oil seal is tightly arranged in the plunger cylinder, the plunger rod is tightly connected with the oil seal, and the plunger rod can movably penetrate through the oil seal; the lubricating liquid observation pipe is arranged on the plunger cylinder in a communicating manner.
4. The dual servo plunger-type dosing machine of claim 2, wherein the diameter of the plunger cylinder is 2mm larger than the diameter of the plunger rod.
5. The dual servo plunger-type doser of claim 1, wherein the flow monitoring system comprises a geared flow meter; the gear type flowmeter and the metering mechanism are in an integrated structure; the gear type flowmeter and the metering mechanism can be arranged in a communicating manner; the geared flow meter is communicably disposed with the mixing valve.
6. The dual-servo plunger-type dosing machine as claimed in any one of claims 1 to 5, wherein the power mechanism comprises a servo motor, a speed reducer, a synchronizing wheel, a synchronizing belt, a drive nut and a drive screw; the servo motor is in transmission connection with the speed reducer; the synchronous wheel is in transmission connection with the servo motor; the synchronous belt is in transmission connection with the synchronous wheel and is of a turn-back type mounting structure; the transmission nut is in transmission connection with the transmission screw rod; one end of the transmission screw rod is movably connected with the metering mechanism.
7. The dual servo plunger-type dosing machine of claim 6 wherein the power mechanism further comprises a guide shaft and a guide membrane; the guide shaft is detachably sleeved on the transmission screw rod through the transmission nut and the transmission slide block; the guide film is detachably sleeved on the guide shaft.
8. The dual servo plunger-type dosing machine of any one of claims 1-5, wherein the feed valve comprises a cylinder body and a solenoid valve; the cylinder body and the electromagnetic valve are in an integrated structure; the cylinder body and the metering mechanism are communicably disposed.
9. The dual servo plunger-type dosing machine of claim 8, wherein the feed valve further comprises a valve pin, a glue inlet seat, and a seal seat; one end of the valve needle is fixedly arranged in the cylinder body, the other end of the valve needle is a free end, and the free end of the valve needle is of a spherical structure; the glue inlet seat is tightly connected to the bottom of the cylinder body; the sealing seat is detachably fixed at the bottom of the rubber inlet seat; the valve needle can be arranged on the rubber inlet seat and the sealing seat in a penetrating manner; the contact action surface between the valve needle and the sealing seat is an inverted conical curved surface; the free end of the valve needle and the inverted conical curved surface form a line contact type sealing structure.
10. The dual servo plunger-type doser of claim 8, wherein the feed valve further comprises a proximity sensor; the proximity sensor is detachably arranged on the cylinder body.
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| CN202010776531.5A CN111842028B (en) | 2020-08-05 | 2020-08-05 | Double-servo plunger type quantifying machine |
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| CN111842028B (en) | 2022-08-09 |
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Address after: 214000 No.1 Xiqin Road, Xinwu District, Wuxi City, Jiangsu Province Patentee after: Cunrong Fluid Equipment (Wuxi) Co.,Ltd. Address before: 214000 No.1 Xiqin Road, Xinwu District, Wuxi City, Jiangsu Province Patentee before: Wuxi bingping Automation Technology Co.,Ltd. |