CN116060270A - Dispensing method for middle-high viscosity glue - Google Patents
Dispensing method for middle-high viscosity glue Download PDFInfo
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- CN116060270A CN116060270A CN202111280414.0A CN202111280414A CN116060270A CN 116060270 A CN116060270 A CN 116060270A CN 202111280414 A CN202111280414 A CN 202111280414A CN 116060270 A CN116060270 A CN 116060270A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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Abstract
The invention discloses a dispensing method for medium-high viscosity glue, which is based on a dispenser, and comprises the following steps: casing, frame, dispensing valve and workstation, the dispensing valve includes: the device comprises a pressing block, an A glue cylinder sleeve for storing A glue, a B glue cylinder sleeve for storing B glue, a glue cavity body, a middle carrier plate, a cover plate and a glue dispensing head, wherein a first diaphragm is arranged between the glue cavity body and the middle carrier plate, a second diaphragm is arranged between the middle carrier plate and the cover plate, and four air nozzles are arranged on the surface of the cover plate, which is opposite to the glue cavity body, and are communicated with the second diaphragm through holes; the thickness of the first diaphragm is larger than that of the second diaphragm, the pneumatic plug comprises a first end part used for being in contact with the first diaphragm, a second end part used for being in contact with the second diaphragm, and a connecting part used for connecting the first end part and the second end part, and the end face area of the first end part, which is close to one end of the first diaphragm, is smaller than that of the second end part, which is close to one end of the second diaphragm. The invention realizes the accurate measurement of the using amount of the adhesive A and the adhesive B, the accurate control of the proportioning amount and the dispensing amount.
Description
Technical Field
The invention relates to the field of dispensing equipment, in particular to a dispensing method for medium-high viscosity glue.
Background
The dispensing machine is an automatic machine which controls fluid through a dispensing valve and drops and coats the fluid on the surface of a product or inside the product. With the continuous development of technology, the dispensing machine is widely applied to the electronic manufacturing industry, industrial electric industry, solar photovoltaic industry, building engineering industry and the like, and the market application is quite popular. The dispensing valve is the most important work executing component on the dispensing machine.
Disclosure of Invention
The invention aims to provide a glue dispensing method for medium-high viscosity glue, which solves the problem that a glue dispensing valve is easy to wear in the long-term use process of the medium-high viscosity glue.
In order to achieve the above purpose, the invention adopts the following technical scheme: a dispensing method for a medium-high viscosity glue, wherein the medium-high viscosity glue is provided with metal particles and silicone oil, and the dispensing machine comprises: the machine comprises a machine shell, a machine frame, a dispensing valve and a workbench, wherein the machine shell is arranged on the machine frame, the dispensing valve and the workbench are both positioned in the machine shell, and the dispensing valve is positioned right above the workbench;
the dispensing valve includes: the glue cavity body is provided with a glue feeding cavity A, a glue feeding cavity B, a glue discharging cavity A and a glue discharging cavity B, and the glue cavity body is respectively provided with 2 first glue feeding channels, 2 first glue discharging channels, 2 second glue feeding channels and 2 second glue discharging channels;
the A glue cylinder sleeve and the B glue cylinder sleeve are arranged on the upper end surface of the glue cavity body, and the 4 adapter plugs with the through holes in the middle are respectively arranged in the A glue inlet concave cavity, the B glue inlet concave cavity, the A glue outlet concave cavity and the B glue outlet concave cavity;
the 2 first glue inlet channels are respectively communicated with the glue inlet cavity A, the glue inlet cavity B, the glue inlet pipe A and the glue inlet pipe B, the 2 first glue outlet channels are respectively communicated with the runner through holes of the switching plugs of the glue inlet cavity A and the glue inlet cavity B, the glue cylinder sleeve A and the glue cylinder sleeve B, the 2 second glue inlet channels are respectively communicated with the runner through holes of the switching plugs of the glue cylinder sleeve A, the glue cylinder sleeve B, the glue outlet cavity A and the glue outlet cavity B, and the 2 second glue outlet channels are respectively communicated with the glue outlet cavity A, the glue outlet cavity B and the 2 third glue outlet channels in the dispensing head;
the first piston rod and the second piston rod are respectively arranged on the A rubber cylinder sleeve and the B rubber cylinder sleeve, the pressing block connected to the Z-axis driving mechanism is positioned above the first piston rod and the second piston rod, and a contact sensor is arranged on the opposite surfaces of the pressing block and the first piston rod and the second piston rod;
a first diaphragm is arranged between the glue cavity body and the middle carrier plate, a second diaphragm is arranged between the middle carrier plate and the cover plate, a first glue through hole corresponding to the glue inlet cavity A, a first glue through hole corresponding to the glue inlet cavity B, a second glue through hole corresponding to the glue outlet cavity A and a second glue through hole corresponding to the glue outlet cavity B are formed in the middle carrier plate, 4 pneumatic plugs are respectively arranged in the glue through holes A, B, A and B and are positioned between the first diaphragm and the second diaphragm, four springs respectively sleeved on the four pneumatic plugs are respectively positioned between the lower parts of the glue through holes A, B, A and B and the corresponding pneumatic plugs, and an exhaust hole is formed in the side walls of the glue through holes A, B, A and B of the middle carrier plate;
the four air nozzles are arranged on the surface of the cover plate, which is opposite to the glue cavity body, and are communicated with the second diaphragm through the through holes;
the thickness of the first diaphragm is larger than that of the second diaphragm, the pneumatic plug comprises a first end part used for being in contact with the first diaphragm, a second end part used for being in contact with the second diaphragm, and a connecting part used for connecting the first end part and the second end part, the area of the end surface of the first end part, which is close to one end of the first diaphragm, is smaller than that of the end surface of the second end part, which is close to one end of the second diaphragm, and the spring is sleeved on the connecting part;
the dispensing method for the middle-high viscosity glue comprises the following steps of:
step one, respective pneumatic plugs positioned in a first glue feeding concave cavity A and a first glue feeding concave cavity B are in an open state under the pushing of a spring,
the pneumatic plugs positioned in the second glue outlet through hole A and the second glue outlet through hole B push the first diaphragm to be contacted with the corresponding adapter plugs of the glue outlet concave cavity A and the glue outlet concave cavity B through the gas injection of the corresponding gas nozzles, so that the glue outlet concave cavity A and the glue outlet concave cavity B are in a closed state;
injecting glue A and glue B into the glue feeding pipe A and the glue feeding pipe B by the glue injection mechanism respectively, enabling the glue A and the glue B to enter a glue feeding concave cavity A through 2 first glue feeding channels, enabling the glue feeding concave cavity B to enter a glue cylinder sleeve A through 2 first glue discharging channels through corresponding adapter plugs, and pushing a first piston rod and a second piston rod to move;
step three, the first piston rod and the second piston rod are contacted with a contact sensor of the pressing block to generate a trigger signal, and the glue injection mechanism receives the trigger signal and stops glue injection;
step four, the respective pneumatic plugs in the first glue through hole A and the first glue through hole B push the first diaphragm to be contacted with the corresponding changeover plugs of the glue feeding concave cavity A and the glue feeding concave cavity B through the gas injection of the corresponding gas nozzles, so that the glue feeding concave cavity A and the glue feeding concave cavity B are in a closed state, and the respective pneumatic plugs in the second glue through hole A and the second glue through hole B are pushed by the springs, so that the changeover plugs corresponding to the glue discharging concave cavity A and the glue discharging concave cavity B are in an open state;
step five, the Z-axis driving mechanism drives the pressing block to push the first piston rod and the second piston rod to move from the initial position, and glue A in the glue cylinder sleeve A and glue B in the glue cylinder sleeve B enter a glue outlet cavity A through 2 second glue inlet channels respectively, and then enter a glue dispensing head through 2 second glue outlet channels;
and step six, repeating the step four to the step five until the first piston rod and the second piston rod move to the bottoms of the A rubber cylinder sleeve and the B rubber cylinder sleeve, and the Z-axis driving mechanism drives the pressing block to return to the initial position.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the glue outlet cavity A is positioned below the glue inlet cavity A, and the glue outlet cavity B is positioned below the glue inlet cavity B.
2. In the scheme, the glue inlet pipe A and the glue inlet pipe B are respectively arranged at the left side end and the right side end of the glue cavity body.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the glue dispensing method for the middle-high viscosity glue, disclosed by the invention, has the advantages that the abrasion of metal particles in the middle-high viscosity glue to the glue dispensing valve is avoided, so that the use reliability and service life of the glue dispensing valve are improved, the defects of silicone oil extrusion in the glue, inconsistent residence time of the glue in different parts and time periods in the glue dispensing valve caused by sudden pressure increase are also avoided, the stability of pressure in the glue supplementing and dispensing is maintained, the phenomena of poor fluidity, large residence time difference and glue property variation of the glue are effectively prevented, the glue use performance effect is stable and consistent, and the product quality is improved; meanwhile, the accurate measurement of the using amount of the adhesive A and the adhesive B, the accurate control of the proportioning amount and the dispensing amount are realized.
2. The invention relates to a dispensing method for middle-high viscosity glue, wherein 4 adapter plugs with runner through holes in the middle are respectively arranged in a glue feeding concave cavity, a glue discharging concave cavity and a glue discharging concave cavity, a first diaphragm is arranged between a glue cavity body and a middle carrier plate, a second diaphragm is arranged between the middle carrier plate and a cover plate, the middle carrier plate is provided with a first glue through hole A, a first glue through hole B, a second glue through hole A and a second glue through hole B which are respectively provided with vent holes, 4 pneumatic plugs are respectively arranged in the first glue through hole A, the first glue through hole B, the second glue through hole A and the second glue through hole B and are positioned between the first diaphragm and the second diaphragm, and four springs respectively sleeved on the 4 pneumatic plugs are respectively positioned between the lower parts of the first glue through hole A, the first glue through hole B, the second glue through hole A and the second glue through hole B and the corresponding pneumatic plugs; because the glue is added and the glue dispensing is a shared cylinder sleeve and glue cavity body, the high-pressure gas from the cylinder is buffered through the second diaphragm and forms uniform surface thrust to drive the pneumatic plug, the pneumatic plug forms self-adaptive dynamic adjustment surface contact with the switching plug through the second diaphragm, the penetration in a pipeline when the glue is added and the glue dispensing is avoided, the vibration of other parts of the glue dispensing valve and the internal glue of the pneumatic plug is greatly buffered and reduced, the sealing performance of the pneumatic plug is improved, and the stability of the sealing performance after long-time use is improved, so that the dosage metering precision, the proportioning and the glue dispensing precision and consistency of the glue are improved, and the more protected diaphragm is also convenient to maintain.
3. The thickness of the first diaphragm is larger than that of the second diaphragm, the pneumatic plug comprises a first end part used for being in contact with the first diaphragm, a second end part used for being in contact with the second diaphragm, and a connecting part used for connecting the first end part and the second end part, the area of the end face of the first end part, which is close to one end of the first diaphragm, is smaller than that of the end face of the second end part, which is close to one end of the second diaphragm, and the spring is sleeved on the connecting part, so that the balance of acting force of the pneumatic plug on the diaphragms at two sides of the pneumatic plug can be ensured in the long-term use process, the service life of the dispensing valve is further prolonged, and the metering precision of dispensing is improved.
Drawings
FIG. 1 is a schematic structural diagram of a dispenser according to the present invention;
FIG. 2 is a schematic structural diagram of a dispenser according to the present invention;
FIG. 3 is a schematic diagram showing the partial structural decomposition of a dispensing valve of the dispenser based on the invention;
FIG. 4 is a schematic structural view of a dispensing valve cavity body of the dispenser based on the invention;
FIG. 5 is a schematic structural view of a middle carrier plate of a dispensing valve of the dispenser based on the invention;
fig. 6 is a schematic diagram of a partial structure of a dispensing valve of the dispenser according to the present invention.
In the above figures: 1. briquetting; 2. a, a rubber cylinder sleeve; 3. a rubber cylinder sleeve B; 4. a glue cavity body; 401. a glue feeding concave cavity; 402. b, feeding glue into the glue concave cavity; 403. a glue outlet concave cavity; 404. b, glue discharging concave cavities; 405. a first glue inlet channel; 406. a first glue outlet channel; 407. a second glue inlet channel; 408. a second glue outlet channel; 5. a cover plate; 501. a through hole; 6. dispensing heads; 601. a third glue outlet channel; 7. a substrate; 8. a glue feeding pipe; 9. b, glue feeding pipe; 10. a first piston rod; 11. a second piston rod; 12. a Z-axis driving mechanism; 13. a contact sensor; 14. pneumatic plugs; 141. a first end; 142. a second end; 143. a connection part; 15. a spring; 16. an air tap; 19. an intermediate carrier plate; 191. a first glue through hole; 192. a first B glue through hole; 193. a second glue through hole; 194. a second glue through hole; 20. a plug; 201. a flow passage through hole; 21. a first membrane; 22. a second membrane; 23. an exhaust hole; 24. a housing; 25. a frame; 26. dispensing valve; 27. a working table.
Detailed Description
In the description of this patent, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element in question must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in this patent will be understood by those of ordinary skill in the art in a specific context.
Example 1: a dispensing method for a medium-high viscosity glue, wherein the medium-high viscosity glue is provided with metal particles and silicone oil, and the dispensing machine comprises: the machine comprises a machine shell 24, a machine frame 25, a dispensing valve 26 and a workbench 27, wherein the machine shell 24 is arranged on the machine frame 25, the dispensing valve 26 and the workbench 27 are both positioned in the machine shell 24, and the dispensing valve 26 is positioned right above the workbench 27;
the dispensing valve 26 includes: the glue dispensing device comprises a pressing block 1, a glue cylinder sleeve 2 used for storing glue A, a glue cylinder sleeve 3 used for storing glue B, a glue cavity body 4, a middle carrier plate 19, a cover plate 5 and a glue dispensing head 6, wherein the glue cavity body 4 arranged on a base plate 7 is provided with a glue inlet cavity 401, a glue inlet cavity 402, a glue outlet cavity 403 and a glue outlet cavity 404, and 2 first glue inlet channels 405, 2 first glue outlet channels 406, 2 second glue inlet channels 407 and 2 second glue outlet channels 408 are respectively arranged in the glue cavity body 4;
the A glue cylinder sleeve 2 and the B glue cylinder sleeve 3 are arranged on the upper end surface of the glue cavity body 4, and the 4 adapter plugs 20 with the flow passage through holes 201 in the middle are respectively arranged in the A glue inlet cavity 401, the B glue inlet cavity 402, the A glue outlet cavity 403 and the B glue outlet cavity 404;
the 2 first glue inlet channels 405 are respectively communicated with the glue inlet cavities 401 and 402, the glue inlet pipes 8 and 9, the 2 first glue outlet channels 406 are respectively communicated with the runner through holes 201 of the adapter plugs 20 of the glue inlet cavities 401 and 402 and the glue cylinder sleeves 2 and 3, the 2 second glue inlet channels 407 are respectively communicated with the runner through holes 201 of the adapter plugs 20 of the glue cylinder sleeves 2 and 3, the glue outlet cavities 403 and 404, and the 2 second glue outlet channels 408 are respectively communicated with the glue outlet cavities 403 and 404 and the third glue outlet channels 601 in the dispensing head 6;
the first piston rod 10 and the second piston rod 11 are respectively arranged on the A rubber cylinder sleeve 2 and the B rubber cylinder sleeve 3, the pressing block 1 connected to the Z-axis driving mechanism 12 is positioned above the first piston rod 10 and the second piston rod 11, and a contact sensor 13 is arranged on the opposite surfaces of the pressing block 1 and the first piston rod 10 and the second piston rod 11;
a first membrane 21 is arranged between the glue cavity body 4 and the middle carrier plate 19, a second membrane 22 is arranged between the middle carrier plate 19 and the cover plate 5, a first glue through hole 191 corresponding to the glue inlet cavity 401 is formed in the middle carrier plate 19, a first glue through hole 192 corresponding to the glue inlet cavity 402, a second glue through hole 193 corresponding to the glue outlet cavity 403 and a second glue through hole 194,4 corresponding to the glue outlet cavity 404 are respectively arranged in the first glue through hole 191, the first glue through hole 192, the second glue through hole 193 and the second glue through hole 194 and are positioned between the first membrane 21 and the second membrane 22, and four springs 15 respectively sleeved on the 4 glue through holes 14 are respectively positioned between the lower parts of the first glue through hole 191, the first glue through hole 192, the second glue through hole 193 and the second glue through hole 194 and the corresponding pneumatic plugs 14, and the first glue through holes 191, the first glue through holes 192, the second glue through holes 192 and the second glue through holes 194 are respectively provided with vent holes 23 on the side walls of the middle carrier plate 19;
the four air nozzles 16 are arranged on the surface of the cover plate 5 opposite to the glue cavity body 4 and are communicated with the second diaphragm 22 through the through holes 501;
the thickness of the first diaphragm 21 is larger than that of the second diaphragm 22, the pneumatic plug 14 comprises a first end portion 141 for contacting the first diaphragm 21, a second end portion 142 for contacting the second diaphragm 22, and a connecting portion 143 for connecting the first end portion 141 and the second end portion 142, the area of the end surface of the first end portion 141 near one end of the first diaphragm 21 is smaller than that of the end surface of the second end portion 142 near one end of the second diaphragm 22, and the spring is sleeved on the connecting portion 143;
the dispensing method for the middle-high viscosity glue comprises the following steps of:
step one, the pneumatic plugs 14 in the first glue-a through hole 191 and the first glue-B through hole 192 are pushed by the springs 15, so that the corresponding adapter plugs 20 of the glue-a cavity 401 and the glue-B cavity 402 are in an open state,
the pneumatic plugs 14 positioned in the second glue through holes 193 and 194 push the first diaphragm 21 to be contacted with the corresponding adapter plugs 20 of the glue discharging cavities 403 and 404 through the air injection of the corresponding air nozzles 16, so that the glue discharging cavities 403 and 404 are in a closed state;
step two, injecting glue A and glue B into the glue feeding pipe 8 and the glue feeding pipe 9 by the glue injecting mechanism respectively, wherein the glue A and the glue B enter the glue feeding concave cavity 401 and the glue feeding concave cavity 402 of the glue A respectively through 2 first glue feeding channels 405 and enter the glue A cylinder sleeve 2 and the glue B cylinder sleeve 3 through 2 first glue outlet channels 406 through corresponding adapter plugs 20, so that the first piston rod 10 and the second piston rod 11 are pushed to move;
step three, the first piston rod 10 and the second piston rod 11 are contacted with the contact sensor 13 of the pressing block 1 to generate a trigger signal, and the glue injection mechanism receives the trigger signal and stops glue injection;
step four, the pneumatic plugs 14 in the first glue through hole 191 and the first glue through hole 192 push the first membrane 21 to be in contact with the corresponding adapter plugs 20 of the glue feeding cavities 401 and 402 through the air injection of the corresponding air nozzles 16, so that the glue feeding cavities 401 and 402 are in a closed state, and the pneumatic plugs 14 in the second glue through hole 193 and 194 are pushed by the springs 15, so that the corresponding adapter plugs 20 of the glue discharging cavities 403 and 404 are in an open state;
step five, the Z-axis driving mechanism 12 drives the pressing block 1 to start pushing the first piston rod 10 and the second piston rod 11 to move from the initial position, and glue A in the glue cylinder sleeve A2 and glue B in the glue cylinder sleeve B3 enter the glue A discharging cavity 403 and the glue B discharging cavity 404 through the 2 second glue discharging channels 408 respectively and enter the glue dispensing head 6;
step six, repeating the step four to the step five until the first piston rod 10 and the second piston rod 11 move to the bottoms of the A rubber cylinder sleeve 2 and the B rubber cylinder sleeve 3, and the Z-axis driving mechanism 12 drives the pressing block 1 to return to the initial position.
Example 2: a dispensing method for a medium-high viscosity glue, wherein the medium-high viscosity glue is provided with metal particles and silicone oil, and the dispensing machine comprises: the machine comprises a machine shell 24, a machine frame 25, a dispensing valve 26 and a workbench 27, wherein the machine shell 24 is arranged on the machine frame 25, the dispensing valve 26 and the workbench 27 are both positioned in the machine shell 24, and the dispensing valve 26 is positioned right above the workbench 27;
the dispensing valve 26 includes: the glue dispensing device comprises a pressing block 1, a glue cylinder sleeve 2 used for storing glue A, a glue cylinder sleeve 3 used for storing glue B, a glue cavity body 4, a middle carrier plate 19, a cover plate 5 and a glue dispensing head 6, wherein the glue cavity body 4 arranged on a base plate 7 is provided with a glue inlet cavity 401, a glue inlet cavity 402, a glue outlet cavity 403 and a glue outlet cavity 404, and 2 first glue inlet channels 405, 2 first glue outlet channels 406, 2 second glue inlet channels 407 and 2 second glue outlet channels 408 are respectively arranged in the glue cavity body 4;
the A glue cylinder sleeve 2 and the B glue cylinder sleeve 3 are arranged on the upper end surface of the glue cavity body 4, and the 4 adapter plugs 20 with the flow passage through holes 201 in the middle are respectively arranged in the A glue inlet cavity 401, the B glue inlet cavity 402, the A glue outlet cavity 403 and the B glue outlet cavity 404;
the 2 first glue inlet channels 405 are respectively communicated with the glue inlet cavities 401 and 402, the glue inlet pipes 8 and 9, the 2 first glue outlet channels 406 are respectively communicated with the runner through holes 201 of the adapter plugs 20 of the glue inlet cavities 401 and 402 and the glue cylinder sleeves 2 and 3, the 2 second glue inlet channels 407 are respectively communicated with the runner through holes 201 of the adapter plugs 20 of the glue cylinder sleeves 2 and 3, the glue outlet cavities 403 and 404, and the 2 second glue outlet channels 408 are respectively communicated with the glue outlet cavities 403 and 404 and the third glue outlet channels 601 in the dispensing head 6;
the first piston rod 10 and the second piston rod 11 are respectively arranged on the A rubber cylinder sleeve 2 and the B rubber cylinder sleeve 3, the pressing block 1 connected to the Z-axis driving mechanism 12 is positioned above the first piston rod 10 and the second piston rod 11, and a contact sensor 13 is arranged on the opposite surfaces of the pressing block 1 and the first piston rod 10 and the second piston rod 11;
a first membrane 21 is arranged between the glue cavity body 4 and the middle carrier plate 19, a second membrane 22 is arranged between the middle carrier plate 19 and the cover plate 5, a first glue through hole 191 corresponding to the glue inlet cavity 401 is formed in the middle carrier plate 19, a first glue through hole 192 corresponding to the glue inlet cavity 402, a second glue through hole 193 corresponding to the glue outlet cavity 403 and a second glue through hole 194,4 corresponding to the glue outlet cavity 404 are respectively arranged in the first glue through hole 191, the first glue through hole 192, the second glue through hole 193 and the second glue through hole 194 and are positioned between the first membrane 21 and the second membrane 22, and four springs 15 respectively sleeved on the 4 glue through holes 14 are respectively positioned between the lower parts of the first glue through hole 191, the first glue through hole 192, the second glue through hole 193 and the second glue through hole 194 and the corresponding pneumatic plugs 14, and the first glue through holes 191, the first glue through holes 192, the second glue through holes 192 and the second glue through holes 194 are respectively provided with vent holes 23 on the side walls of the middle carrier plate 19;
the four air nozzles 16 are arranged on the surface of the cover plate 5 opposite to the glue cavity body 4 and are communicated with the second diaphragm 22 through the through holes 501;
the thickness of the first diaphragm 21 is larger than that of the second diaphragm 22, the pneumatic plug 14 comprises a first end portion 141 for contacting the first diaphragm 21, a second end portion 142 for contacting the second diaphragm 22, and a connecting portion 143 for connecting the first end portion 141 and the second end portion 142, the area of the end surface of the first end portion 141 near one end of the first diaphragm 21 is smaller than that of the end surface of the second end portion 142 near one end of the second diaphragm 22, and the spring is sleeved on the connecting portion 143;
the dispensing method for the middle-high viscosity glue comprises the following steps of:
step one, the pneumatic plugs 14 in the first glue-a through hole 191 and the first glue-B through hole 192 are pushed by the springs 15, so that the corresponding adapter plugs 20 of the glue-a cavity 401 and the glue-B cavity 402 are in an open state,
the pneumatic plugs 14 positioned in the second glue through holes 193 and 194 push the first diaphragm 21 to be contacted with the corresponding adapter plugs 20 of the glue discharging cavities 403 and 404 through the air injection of the corresponding air nozzles 16, so that the glue discharging cavities 403 and 404 are in a closed state;
step two, injecting glue A and glue B into the glue feeding pipe 8 and the glue feeding pipe 9 by the glue injecting mechanism respectively, wherein the glue A and the glue B enter the glue feeding concave cavity 401 and the glue feeding concave cavity 402 of the glue A respectively through 2 first glue feeding channels 405 and enter the glue A cylinder sleeve 2 and the glue B cylinder sleeve 3 through 2 first glue outlet channels 406 through corresponding adapter plugs 20, so that the first piston rod 10 and the second piston rod 11 are pushed to move;
step three, the first piston rod 10 and the second piston rod 11 are contacted with the contact sensor 13 of the pressing block 1 to generate a trigger signal, and the glue injection mechanism receives the trigger signal and stops glue injection;
step four, the pneumatic plugs 14 in the first glue through hole 191 and the first glue through hole 192 push the first membrane 21 to be in contact with the corresponding adapter plugs 20 of the glue feeding cavities 401 and 402 through the air injection of the corresponding air nozzles 16, so that the glue feeding cavities 401 and 402 are in a closed state, and the pneumatic plugs 14 in the second glue through hole 193 and 194 are pushed by the springs 15, so that the corresponding adapter plugs 20 of the glue discharging cavities 403 and 404 are in an open state;
step five, the Z-axis driving mechanism 12 drives the pressing block 1 to start pushing the first piston rod 10 and the second piston rod 11 to move from the initial position, and glue A in the glue cylinder sleeve A2 and glue B in the glue cylinder sleeve B3 enter the glue A discharging cavity 403 and the glue B discharging cavity 404 through the 2 second glue discharging channels 408 respectively and enter the glue dispensing head 6;
step six, repeating the step four to the step five until the first piston rod 10 and the second piston rod 11 move to the bottoms of the A rubber cylinder sleeve 2 and the B rubber cylinder sleeve 3, and the Z-axis driving mechanism 12 drives the pressing block 1 to return to the initial position.
When the dispensing method for the middle-high viscosity glue is adopted, the abrasion of metal particles in the middle-high viscosity glue to the dispensing valve is avoided, so that the reliability and the service life of the dispensing valve are improved, the defects of silicone oil extrusion in the glue, inconsistent residence time of the glue in different parts and time periods in the dispensing valve caused by sudden pressure increase are also avoided, the stability of the pressure in the process of supplementing the glue and dispensing is maintained, the phenomena of poor fluidity, large residence time difference and glue property variation of the glue are effectively prevented, the glue use performance effect is stable and consistent, and the product quality is improved; meanwhile, the accurate measurement of the using amount of the adhesive A and the adhesive B, the accurate control of the proportioning amount and the dispensing amount are realized;
in addition, the switching plugs with the runner through holes in the middle are respectively arranged in the glue feeding concave cavity A, the glue feeding concave cavity B, the glue discharging concave cavity A and the glue discharging concave cavity B, a first diaphragm is arranged between the glue cavity body and the middle carrier plate, a second diaphragm is arranged between the middle carrier plate and the cover plate, the middle carrier plate is provided with a first glue through hole A, a first glue through hole B, a second glue through hole A and a second glue through hole B which are respectively provided with vent holes, 4 pneumatic plugs are respectively arranged in the glue through holes A, the glue through holes B and are positioned between the first diaphragm and the second diaphragm, and four springs respectively sleeved on the 4 pneumatic plugs are respectively positioned between the lower parts of the glue through holes A, the glue through holes B, the glue through holes A and the glue through holes B and the corresponding pneumatic plugs; the glue is added and the glue is dispensed to share the cylinder sleeve and the glue cavity body, high-pressure gas from the cylinder is buffered through the second diaphragm and forms uniform surface thrust to drive the pneumatic plug, the pneumatic plug forms self-adaptive dynamic adjustment surface contact with the switching plug through the second diaphragm, so that the penetration in a pipeline when the glue is added and the glue is dispensed is avoided, the vibration of other parts of the glue dispensing valve and the glue in the pneumatic plug is greatly buffered and reduced, the tightness of the pneumatic plug is improved, and the stability of tightness after long-time use is improved, thereby improving the dosage metering precision, proportioning and glue dispensing precision and consistency of the glue, and being convenient for maintaining the more protected diaphragm;
further, the thickness of its first diaphragm is greater than the thickness of second diaphragm, pneumatic end cap is including being used for the first tip of contact with first diaphragm, be used for the second tip of contact with the second diaphragm and connect the connecting portion of first tip, second tip, the terminal surface area that first tip is close to first diaphragm one end is less than the terminal surface area that second tip is close to second diaphragm one end, the spring suit is on connecting portion, can guarantee the equilibrium of pneumatic end cap to its both sides diaphragm effort in long-term use, further prolongs the life of dispensing valve and improves the measurement precision of point gum.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (3)
1. The dispensing method for the medium-high viscosity glue is characterized in that the medium-high viscosity glue is provided with metal particles and silicone oil and is characterized in that: based on a point gum machine, the point gum machine includes: the machine comprises a machine shell (24), a machine frame (25), a dispensing valve (26) and a workbench (27), wherein the machine shell (24) is arranged on the machine frame (25), the dispensing valve (26) and the workbench (27) are both positioned in the machine shell (24), and the dispensing valve (26) is positioned right above the workbench (27);
the dispensing valve (26) comprises: the glue dispensing device comprises a pressing block (1), an A glue cylinder sleeve (2) for storing A glue, a B glue cylinder sleeve (3) for storing B glue, a glue cavity body (4), a middle carrier plate (19), a cover plate (5) and a glue dispensing head (6), wherein an A glue inlet cavity (401), a B glue inlet cavity (402), an A glue outlet cavity (403) and a B glue outlet cavity (404) are formed in the glue cavity body (4) which is arranged on a base plate (7), and 2 first glue inlet channels (405), 2 first glue outlet channels (406), 2 second glue inlet channels (407) and 2 second glue outlet channels (408) are respectively formed in the glue cavity body (4);
the A glue cylinder sleeve (2) and the B glue cylinder sleeve (3) are arranged on the upper end surface of the glue cavity body (4), and the 4 adapter plugs (20) with the runner through holes (201) in the middle are respectively arranged in the A glue inlet concave cavity (401), the B glue inlet concave cavity (402), the A glue outlet concave cavity (403) and the B glue outlet concave cavity (404);
the two first glue inlet channels (405) are respectively communicated with the glue inlet cavity (401), the glue inlet cavity (402) and the glue inlet tube (8) and the glue inlet tube (9), the 2 first glue outlet channels (406) are respectively communicated with the glue inlet cavity (401) and the glue inlet cavity (402) respectively through-flow passage holes (201) of the transfer plugs (20) and the glue cylinder sleeve (2) and the glue cylinder sleeve (3), the 2 second glue inlet channels (407) are respectively communicated with the glue cylinder sleeve (2) and the glue cylinder sleeve (3) respectively through-flow passage holes (201) of the transfer plugs (20) of the glue outlet cavity (403) and the glue outlet cavity (404), and the 2 second glue outlet channels (408) are respectively communicated with the glue outlet cavity (403), the glue outlet cavity (404) and the glue outlet cavity (3) respectively through-flow passage holes (601) of the glue outlet plugs (20) in the glue dispensing head (6);
the pressure block (1) connected to a Z-axis driving mechanism (12) is positioned above the first piston rod (10) and the second piston rod (11), and a contact sensor (13) is arranged on the opposite surfaces of the pressure block (1) and the first piston rod (10) and the second piston rod (11);
the rubber cavity body (4) is provided with a first diaphragm (21) between the middle carrier plate (19) and the middle carrier plate (19), a second diaphragm (22) is arranged between the middle carrier plate (19) and the cover plate (5), a first A rubber through hole (191) corresponding to the A rubber inlet cavity (401), a first B rubber through hole (192) corresponding to the B rubber inlet cavity (402), a second A rubber through hole (193) corresponding to the A rubber outlet cavity (403) and a second B rubber through hole (194) corresponding to the B rubber outlet cavity (404) are formed in the middle carrier plate (19), 4 pneumatic plugs (14) are respectively arranged in the first A rubber through hole (191), the first B rubber through hole (192), the second A rubber through hole (193) and the second B rubber through hole (194) and are located between the first diaphragm (21) and the second diaphragm (22), four springs (15) respectively sleeved on the 4 pneumatic plugs (14) are respectively located in the first A rubber through hole (191), the first B rubber through hole (192), the second A rubber through hole (192) and the second pneumatic plug (194) respectively, and the corresponding to the first pneumatic plug (19A through hole (194) are respectively arranged between the first A rubber through hole (191) and the second pneumatic plug (14) The side walls of the second A glue through hole (193) and the second B glue through hole (194) are respectively provided with an exhaust hole (23);
the four air nozzles (16) are arranged on the surface of the cover plate (5) opposite to the glue cavity body (4) and are communicated with the second diaphragm (22) through the through holes (501);
the thickness of the first membrane (21) is larger than that of the second membrane (22), the pneumatic plug (14) comprises a first end (141) used for being in contact with the first membrane (21), a second end (142) used for being in contact with the second membrane (22) and a connecting part (143) used for connecting the first end (141) and the second end (142), the end surface area of the first end (141) close to one end of the first membrane (21) is smaller than that of the second end (142) close to one end of the second membrane (22), and the spring is sleeved on the connecting part (143);
the dispensing method for the middle-high viscosity glue comprises the following steps of:
step one, the pneumatic plugs (14) positioned in the first glue feeding through hole (191) and the first glue feeding through hole (192) respectively are pushed by the springs (15) to enable the corresponding adapter plugs (20) of the glue feeding concave cavities (401) and the glue feeding concave cavities (402) to be in an open state,
the pneumatic plugs (14) positioned in the second glue outlet through holes (193) and the second glue outlet through holes (194) push the first membrane (21) to be in contact with the corresponding adapter plugs (20) of the glue outlet concave cavities (403) and (404) through the air injection of the corresponding air nozzles (16), so that the glue outlet concave cavities (403) and (404) are in a closed state;
injecting glue A and glue B into the glue feeding pipe A (8) and the glue feeding pipe B (9) by the glue injection mechanism respectively, enabling the glue A and the glue B to enter a glue feeding cavity A (401) through 2 first glue feeding channels (405), enabling the glue B to enter a glue feeding cylinder sleeve A (2) through 2 first glue discharging channels (406) through corresponding adapter plugs (20), and pushing a first piston rod (10) and a second piston rod (11) to move;
step three, the first piston rod (10) and the second piston rod (11) are contacted with a contact sensor (13) of the pressing block (1) to generate a trigger signal, and the glue injection mechanism receives the trigger signal and stops glue injection;
step four, the pneumatic plugs (14) respectively positioned in the first glue feeding through hole (191) and the first glue feeding through hole (192) push the first diaphragm (21) to be in contact with the corresponding adapter plugs (20) of the glue feeding concave cavities (401) and the glue feeding concave cavities (402) through the corresponding air nozzles (16), so that the glue feeding concave cavities (401) and the glue feeding concave cavities (402) are in a closed state, and the pneumatic plugs (14) respectively positioned in the second glue feeding through hole (193) and the second glue feeding through hole (194) are under the pushing of the springs (15), so that the adapter plugs (20) corresponding to the glue feeding concave cavities (403) and the glue feeding concave cavities (404) are in an open state;
step five, a Z-axis driving mechanism (12) drives a pressing block (1) to push a first piston rod (10) and a second piston rod (11) to move from an initial position, and glue A in a glue cylinder sleeve (2) and glue B in a glue cylinder sleeve (3) enter a glue outlet cavity (403) of the glue A through 2 second glue inlet channels (407) respectively, and glue outlet cavities (404) of the glue B enter a glue dispensing head (6) through 2 second glue outlet channels (408);
step six, repeating the step four to the step five until the first piston rod (10) and the second piston rod (11) move to the bottoms of the A rubber cylinder sleeve (2) and the B rubber cylinder sleeve (3), and the Z-axis driving mechanism (12) drives the pressing block (1) to return to the initial position.
2. The dispensing method for medium-high viscosity glue according to claim 1, wherein: the glue outlet cavity (403) is positioned below the glue inlet cavity (401), and the glue outlet cavity (404) is positioned below the glue inlet cavity (402).
3. The dispensing method for medium-high viscosity glue according to claim 1, wherein: the glue inlet pipe (8) and the glue inlet pipe (9) are respectively arranged at the left side end and the right side end of the glue cavity body (4).
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| CN202111280414.0A CN116060270A (en) | 2021-11-01 | 2021-11-01 | Dispensing method for middle-high viscosity glue |
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| CN202111280414.0A CN116060270A (en) | 2021-11-01 | 2021-11-01 | Dispensing method for middle-high viscosity glue |
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