CN109290134B - Thimble type dispensing valve - Google Patents
Thimble type dispensing valve Download PDFInfo
- Publication number
- CN109290134B CN109290134B CN201811469836.0A CN201811469836A CN109290134B CN 109290134 B CN109290134 B CN 109290134B CN 201811469836 A CN201811469836 A CN 201811469836A CN 109290134 B CN109290134 B CN 109290134B
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- Prior art keywords
- valve body
- dispensing
- cavity
- valve
- piston
- Prior art date
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Links
- 239000003292 glue Substances 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 27
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract 2
- 239000000084 colloidal system Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Coating Apparatus (AREA)
Abstract
The invention discloses a thimble type dispensing valve, which comprises a middle valve body, wherein an upper cavity and a lower cavity are sequentially arranged in the middle of the middle valve body, a piston is accommodated in the upper cavity, the piston divides the upper cavity into a first upper cavity and a second upper cavity, a return spring is arranged at the top of the piston, and a first air inlet connector is arranged on the side surface of the middle valve body; an upper valve body is arranged above the middle valve body, a second air inlet connector is arranged on the side surface of the upper valve body, and the second air inlet connector is communicated with the first upper cavity; a lower valve body is arranged below the middle valve body, a glue inlet joint is arranged on the side face of the lower valve body, and a third cavity communicated with the lower cavity is arranged in the middle of the lower valve body; the bottom of the lower valve body is provided with a hollow stud, and the stud is connected with a hollow dispensing head; the bottom of the piston is provided with a valve needle for controlling the opening and closing of the dispensing head. The invention has high glue discharging accuracy, can realize continuous glue discharging and quick glue breaking, and is very convenient to use.
Description
Technical Field
The invention relates to the technical field of dispensing valves, in particular to a thimble type dispensing valve.
Background
The dispensing valve is the most important work executing component on the dispensing machine, and the dispensing machine is an automatic machine which controls fluid through the dispensing valve and drops and coats the fluid on the surface of a product or inside the product. The dispensing valve is formed by connecting four parts of a cylinder, a valve body, a material cylinder and a glue outlet assembly, wherein the cylinder and the valve body are separated by an advanced sealing material, and glue is prevented from invading the cylinder. The material cylinder and the cylinder are connected to the dispensing valve main body, and concentricity is guaranteed with the cylinder. The electromagnetic valve is used for pneumatically controlling the movement of the air cylinder, so that the center rod is driven to move up and down, and the glue is turned on and off by utilizing the up-down movement of the center rod.
According to the different modes of opening and closing, the dispensing valve is divided into: plunger type dispensing valve, thimble type dispensing valve, lifting type dispensing valve, diaphragm valve, double-liquid dispensing valve, Y-type valve, manual dispensing valve, spray dispensing valve, ceramic valve and injection dispensing valve; the switching patterns are different, and the applicable fluids are different. The back suction type glue dispensing valve adopts an upward movement glue closing structure, so that glue is stopped and simultaneously the glue is instantly sucked back and broken, residual glue on a remaining needle is reduced, and the phenomena of leakage, wire drawing and the like are avoided during glue dispensing; the thimble type dispensing valve and the back suction type dispensing valve are opposite in closing structure, and the glue collecting speed is high.
In the thimble type dispensing valve in the prior art, the valve needle is not provided with the sealing ring, the sealing effect cannot be achieved, glue can be upwards strung into the cavity, meanwhile, the valve needle is driven to move downwards through air pressure, so that the purpose of breaking glue is achieved, and the glue is still outwards flowing in the period of time and cannot be broken immediately due to the fact that the air pressure drives the valve needle for a certain time, so that the glue can not be accurately dispensed.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to solve the technical problems, and aims to overcome the defects in the prior art, the ejector pin type dispensing valve is high in dispensing accuracy, capable of realizing continuous dispensing and quick breaking, and convenient to install and use.
The technical scheme adopted for solving the technical problems is as follows:
a thimble dispensing valve, comprising:
the middle valve body is provided with an upper cavity and a lower cavity in sequence from top to bottom, a piston is accommodated in the upper cavity, the piston divides the upper cavity into a first upper cavity and a second upper cavity which are arranged up and down, a return spring is arranged at the top of the piston, a first air inlet connector is arranged on the side face of the middle valve body, and the first air inlet connector is communicated with the second upper cavity;
an upper valve body is arranged above the middle valve body, a first limiting protrusion is arranged at the bottom of the upper valve body and is accommodated in the first upper cavity, a second air inlet connector is arranged on the side face of the upper valve body, and the second air inlet connector is communicated with the first upper cavity;
the top of the upper valve body is provided with a thousand-minute gauge for adjusting the glue outlet quantity, and the bottom of the thousand-minute gauge extends into the first upper cavity;
a lower valve body is arranged below the middle valve body, a groove is formed in the bottom of the lower cavity, a second limiting protrusion is arranged at the top of the lower valve body and is accommodated in the groove, a glue inlet joint is arranged on the side face of the lower valve body, a third cavity communicated with the lower cavity is arranged in the middle of the lower valve body, and the glue inlet joint is communicated with the third cavity;
the bottom of the lower valve body is provided with a hollow stud, the stud is connected with a hollow dispensing head, the dispensing head comprises a hollow fixing seat, a dispensing needle arranged on a dispensing outlet of the fixing seat and a locking nut for screwing the fixing seat, and the dispensing head is communicated with the dispensing head;
the bottom of the piston is provided with a valve needle for controlling the opening and closing of the dispensing head, and the valve needle penetrates through the bottom of the third cavity and is inserted into the fixed seat to be in butt joint with the dispensing head;
the piston is provided with first sealing washer, second sealing washer from the top down respectively, be provided with the third sealing washer on the first spacing arch, the needle is located the downside that first air inlet connects and is provided with a fixed block, the upside of fixed block is provided with the fourth sealing washer, the downside of fixed block is provided with the fifth sealing washer, the top of fixing base is provided with the sixth sealing washer.
Preferably, a limiting column is arranged on the thousand-point gauge, and a seventh sealing ring is sleeved on the limiting column.
Preferably, the micrometer gauge is in threaded connection with the upper valve body, and the micrometer gauge is provided with scale marks.
Preferably, the upper valve body and the lower valve body are connected with the middle valve body through four bolts.
Preferably, the outer diameter of each of the four bolts is 4mm.
Preferably, screw holes matched with the bolts are formed in four corners of the upper valve body and the lower valve body.
Preferably, the piston and the valve needle are both made of stainless steel.
Preferably, the lengths and widths of the middle valve body, the upper valve body and the lower valve body are equal.
Preferably, the length and width are both 25mm.
Compared with the prior art, the ejector pin type dispensing valve provided by the invention has the advantages that the dispensing head is connected with the lower valve body through the threads, so that different types of dispensing needles can be quickly replaced, the accuracy of dispensing is ensured, the fifth sealing ring is arranged on the lower side of the fixed block, the colloid cannot be brought into the lower cavity when the valve needle moves upwards, the tightness of the lower cavity is ensured, the continuity of dispensing is ensured, meanwhile, the valve needle can be quickly fallen back into the dispensing head to realize quick dispensing due to the arrangement of the return spring, and in addition, the whole ejector pin type dispensing valve is compact in structure, convenient to install and use, corrosion-resistant and long in service life.
Drawings
FIG. 1 is a schematic diagram of a dispensing valve according to a preferred embodiment of the present invention.
FIG. 2 is an exploded view of a preferred embodiment of a dispensing valve of the present invention.
FIG. 3 is a cross-sectional view of a preferred embodiment of a dispensing valve of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear and clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment of the invention provides a thimble type dispensing valve, as shown in fig. 1 to 3, which comprises: the middle valve body 100, an upper cavity 101 and a lower cavity 102 are sequentially arranged in the middle of the middle valve body 100 from top to bottom, a piston 200 is accommodated in the upper cavity 101, the piston 200 divides the upper cavity 101 into a first upper cavity 111 and a second upper cavity 121 which are arranged up and down, a return spring 300 is arranged at the top of the piston 200, a first air inlet joint 400 is arranged on the side surface of the middle valve body 100, and the first air inlet joint 400 is communicated with the second upper cavity 121;
an upper valve body 500 is arranged above the middle valve body 100, a first limiting protrusion 501 is arranged at the bottom of the upper valve body 500, the first limiting protrusion 501 is accommodated in the first upper cavity 111, a second air inlet connector 600 is arranged on the side surface of the upper valve body 500, and the second air inlet connector 600 is communicated with the first upper cavity 111;
the top of the upper valve body 500 is provided with a micrometer gauge 10 for adjusting the glue outlet amount, and the bottom of the micrometer gauge 10 extends into the first upper cavity 111;
a lower valve body 700 is arranged below the middle valve body 100, a groove 112 is arranged at the bottom of the lower cavity 102, a second limiting protrusion 701 is arranged at the top of the lower valve body 700, the second limiting protrusion 701 is accommodated in the groove 112, a glue inlet joint 800 is arranged on the side surface of the lower valve body 700, a third cavity 702 communicated with the lower cavity 102 is arranged in the middle of the lower valve body 700, and the glue inlet joint 800 is communicated with the third cavity 702;
the bottom of the lower valve body 700 is provided with a hollow stud 703, the stud 703 is connected with a hollow dispensing head 900, the dispensing head 900 comprises a hollow fixing seat 901, a dispensing needle 902 arranged on a dispensing outlet of the fixing seat 901, and a locking nut 903 for screwing the fixing seat 901, and the dispensing head 900 is communicated with the dispensing head 800;
the bottom of the piston 200 is provided with a valve needle 201 for controlling the opening and closing of the dispensing head 900, and the valve needle 201 passes through the bottom of the third cavity 702 and is inserted into the fixing seat 901 to be in butt joint with the dispensing needle 902;
the piston 200 is provided with a first sealing ring 202 and a second sealing ring 203 from top to bottom respectively, a third sealing ring 511 is arranged on the first limiting protrusion 501, a fixed block 211 is arranged on the lower side of the valve needle 201 located on the first air inlet joint 400, a fourth sealing ring 221 is arranged on the upper side of the fixed block 211, a fifth sealing ring 231 is arranged on the lower side of the fixed block 211, and a sixth sealing ring 911 is arranged on the top of the fixed seat 901.
In specific implementation, since the stud 703 is disposed at the bottom of the lower valve body 700, the dispensing head 900 and the stud 703 are fixed by threaded connection, and thus the dispensing needle 902 with different calibers can be replaced by the lock nut 903, so that the valve is suitable for use in different working environments, the whole dispensing valve cannot be replaced due to the blocking of the dispensing needle 902, and only the dispensing needle 902 needs to be replaced.
The method for replacing the dispensing needle 902 comprises the following steps: after the lock nut 903 is unscrewed, the fixing block 211 is removed, the dispensing needle 902 is replaced, and after the replacement, the lock nut 903 is fixed to the lower valve body 700.
The first seal ring 202 and the second seal ring 203 can ensure that the second upper cavity 121 and the first upper cavity 111 are in a vacuum state, and the third seal ring 511 can effectively prevent external gas from entering the first upper cavity 111.
When the piston 200 drives the valve needle 201 to move upwards, the valve needle 201 is adhered with the colloid at this time, so that the colloid and the gas can be effectively prevented from entering the lower cavity 102 through the effect of the fifth sealing ring 231.
The conventional colloid is UV glue, TUYYF glue, GREASE OIL glue, lubricating liquid, etc.
In a further preferred embodiment of the present invention, a limiting post 11 is disposed on the micrometer 10, and a seventh sealing ring 12 is sleeved on the limiting post 11.
The micrometer 10 is used for adjusting the glue outlet amount of the glue head 900, and specifically comprises: the limit post 11 is located above the piston 200, and the limit post 11 is used to limit the upward movement distance of the piston 200, i.e. limit the upward movement distance of the valve needle 201.
When the length of the limit post 11 inserted into the first upper cavity 111 increases, the distance of upward movement of the valve needle 201 becomes smaller, the amount of glue fed from the glue feeding joint 800 becomes smaller, and the amount of glue discharged from the glue dispensing head 900 becomes smaller; in contrast, when the length of the stopper post 11 inserted into the first upper cavity 111 is reduced, the distance of upward movement of the needle 201 is increased, the amount of glue fed from the glue feeding joint 800 is increased, and the amount of glue discharged from the glue dispensing head 900 is increased.
In a further preferred embodiment of the present invention, the micrometer gauge 10 is in threaded connection with the upper valve body 500, and graduation marks (not shown in the drawing) are provided on the micrometer gauge 10.
In a further preferred embodiment of the present invention, the upper valve body 500 and the lower valve body 700 are connected to the middle valve body 100 by four bolts 13.
In a further preferred embodiment of the invention, the outer diameter of each of the four bolts 13 is 4mm.
In a further preferred embodiment of the present invention, screw holes adapted to the bolts 13 are provided at four corners of the upper and lower valve bodies 500 and 700.
In a further preferred embodiment of the invention, both the piston 200 and the needle 201 are made of stainless steel. Stainless steel has strong corrosion resistance.
In a further preferred embodiment of the present invention, the lengths and widths of the middle valve body 100, the upper valve body 500 and the lower valve body 700 are equal. The middle valve body 100, the upper valve body 500 and the lower valve body 700 are all made of aluminum alloy, and the aluminum alloy is wear-resistant, so that the service life of the valve is prolonged.
In a further preferred embodiment of the invention, the length and width are both 25mm. The size is suitable for installation in a small space range, and the installation and the use are very convenient.
The action principle of the dispensing valve is as follows: before use, the corresponding dispensing needle 902 is replaced by selecting the lock nut 903, then the lock nut 903 is fixed on the lower valve body 700, and then the corresponding pressure pipelines are connected to the first air inlet connector 400, the second air inlet connector 600 and the glue inlet connector 800 respectively. When the first air inlet connector 400 supplies air, but the second air inlet connector 600 does not supply air, the air enters the second upper cavity 121 from the first air inlet connector 400, so that the return spring 300 is compressed, the piston 200 moves upwards, the valve needle 201 is driven to move upwards, the valve needle 201 is separated from the glue outlet, at the moment, glue in the glue inlet connector 800 flows into the glue dispensing needle 902 through the third cavity 702 to dispense glue, when the glue outlet amount needs to be adjusted, the glue outlet amount can be adjusted by manually adjusting the kilodivider 10, meanwhile, the air can also be supplied through the second air inlet connector 600, so that the air enters the first upper cavity 111 from the second air inlet connector 600, and thus, due to the pressure effect of the air, the piston 200 moves downwards, the distance between the valve needle 201 and the glue outlet is reduced, and the glue outlet amount is reduced. When the dispensing is required to be suspended, the first air inlet connector 400 stops supplying power, the return spring 300 releases energy to extend, the piston 200 is driven to move downwards, the valve needle 201 is enabled to prop against the dispensing opening, the dispensing is rapidly stopped, and the dispensing accuracy is guaranteed.
In summary, the invention discloses a thimble type dispensing valve, which can be arbitrarily used in a linkage way with a feed pump or a storage pressure barrel, can be assembled with a plurality of dispensing valves simultaneously, saves production time, reduces consumption, takes compressed air as power, has a fluid sealing structure, reduces the frequency of replacing sealing elements, is fast to maintain, can replace various dispensing needles, has accurate gluing, and prolongs the service life.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (5)
1. The utility model provides a thimble type dispensing valve which characterized in that includes:
the middle valve body is provided with an upper cavity and a lower cavity in sequence from top to bottom, a piston is accommodated in the upper cavity, the piston divides the upper cavity into a first upper cavity and a second upper cavity which are arranged up and down, a return spring is arranged at the top of the piston, a first air inlet connector is arranged on the side face of the middle valve body, and the first air inlet connector is communicated with the second upper cavity;
an upper valve body is arranged above the middle valve body, a first limiting protrusion is arranged at the bottom of the upper valve body and is accommodated in the first upper cavity, a second air inlet connector is arranged on the side face of the upper valve body, and the second air inlet connector is communicated with the first upper cavity;
the top of the upper valve body is provided with a thousand-minute gauge for adjusting the glue outlet quantity, and the bottom of the thousand-minute gauge extends into the first upper cavity;
a lower valve body is arranged below the middle valve body, a groove is formed in the bottom of the lower cavity, a second limiting protrusion is arranged at the top of the lower valve body and is accommodated in the groove, a glue inlet joint is arranged on the side face of the lower valve body, a third cavity communicated with the lower cavity is arranged in the middle of the lower valve body, and the glue inlet joint is communicated with the third cavity;
the bottom of the lower valve body is provided with a hollow stud, the stud is connected with a hollow dispensing head, the dispensing head comprises a hollow fixing seat, a dispensing needle arranged on a dispensing outlet of the fixing seat and a locking nut for screwing the fixing seat, and the dispensing head is communicated with the dispensing head;
the bottom of the piston is provided with a valve needle for controlling the opening and closing of the dispensing head, and the valve needle penetrates through the bottom of the third cavity and is inserted into the fixed seat to be in butt joint with the dispensing head;
the piston is provided with a first sealing ring and a second sealing ring from top to bottom respectively, the first limiting protrusion is provided with a third sealing ring, the lower side of the valve needle, which is positioned at the first air inlet joint, is provided with a fixed block, the upper side of the fixed block is provided with a fourth sealing ring, the lower side of the fixed block is provided with a fifth sealing ring, and the top of the fixed seat is provided with a sixth sealing ring;
a limiting column is arranged on the thousand-point gauge, and a seventh sealing ring is sleeved on the limiting column;
the thousand-minute gauge is in threaded connection with the upper valve body, and is provided with scale marks;
the upper valve body and the lower valve body are connected with the middle valve body through four bolts;
the outer diameter of each of the four bolts is 4mm.
2. The ejector pin dispensing valve of claim 1 wherein four corners of the upper and lower valve bodies are provided with screw holes adapted to the bolts.
3. The dispensing valve of claim 1, wherein the piston and the valve needle are both made of stainless steel.
4. The dispensing valve of claim 1, wherein the middle, upper and lower valve bodies are all equal in length and width.
5. The dispensing valve of claim 4, wherein the length and width are each 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469836.0A CN109290134B (en) | 2018-11-26 | 2018-11-26 | Thimble type dispensing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469836.0A CN109290134B (en) | 2018-11-26 | 2018-11-26 | Thimble type dispensing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109290134A CN109290134A (en) | 2019-02-01 |
| CN109290134B true CN109290134B (en) | 2023-12-01 |
Family
ID=65141352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811469836.0A Active CN109290134B (en) | 2018-11-26 | 2018-11-26 | Thimble type dispensing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109290134B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889311A (en) * | 2020-02-13 | 2020-11-06 | 苏州特瑞特机器人有限公司 | Micro-pneumatic spray valve |
| CN114226092B (en) * | 2021-12-16 | 2023-04-25 | 蒋恒 | Glue coating device and application method thereof |
| CN115589869B (en) * | 2022-09-15 | 2024-07-02 | 华中农业大学 | Chain bowl seedling album manufacturing method and device |
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|---|---|---|---|---|
| CN101219422A (en) * | 2007-01-11 | 2008-07-16 | 鸿富锦精密工业（深圳）有限公司 | Gluing device and needle head replacing method |
| EP1949977A1 (en) * | 2007-01-25 | 2008-07-30 | Nordson Corporation | Apparatus for dispensing liquid material |
| CN202129194U (en) * | 2011-06-16 | 2012-02-01 | 梁文飞 | High-precision glue-dispensing valve |
| CN202555462U (en) * | 2012-05-07 | 2012-11-28 | 深圳市轴心自控技术有限公司 | Adhesive dispensing valve |
| WO2013133365A1 (en) * | 2012-03-08 | 2013-09-12 | 武蔵エンジニアリング株式会社 | Liquid dispensing apparatus, coating apparatus for same, and liquid dispensing method |
| CN105149167A (en) * | 2015-10-16 | 2015-12-16 | 林和德 | Negative pressure feedback re-suction ejector pin type dispensing valve |
| EP3067123A2 (en) * | 2015-03-09 | 2016-09-14 | Nordson Corporation | Liquid dispensing applicators having backpressure control devices, and related methods |
| CN205731848U (en) * | 2016-06-21 | 2016-11-30 | 深圳市成大有科技有限公司 | A kind of ejector pin type glue dispensing valve |
| CN205731828U (en) * | 2015-10-16 | 2016-11-30 | 漳州职业技术学院 | A kind of negative pressure feedback resorption ejector pin type glue dispensing valve |
-
2018
- 2018-11-26 CN CN201811469836.0A patent/CN109290134B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219422A (en) * | 2007-01-11 | 2008-07-16 | 鸿富锦精密工业（深圳）有限公司 | Gluing device and needle head replacing method |
| EP1949977A1 (en) * | 2007-01-25 | 2008-07-30 | Nordson Corporation | Apparatus for dispensing liquid material |
| CN202129194U (en) * | 2011-06-16 | 2012-02-01 | 梁文飞 | High-precision glue-dispensing valve |
| WO2013133365A1 (en) * | 2012-03-08 | 2013-09-12 | 武蔵エンジニアリング株式会社 | Liquid dispensing apparatus, coating apparatus for same, and liquid dispensing method |
| CN202555462U (en) * | 2012-05-07 | 2012-11-28 | 深圳市轴心自控技术有限公司 | Adhesive dispensing valve |
| EP3067123A2 (en) * | 2015-03-09 | 2016-09-14 | Nordson Corporation | Liquid dispensing applicators having backpressure control devices, and related methods |
| CN105149167A (en) * | 2015-10-16 | 2015-12-16 | 林和德 | Negative pressure feedback re-suction ejector pin type dispensing valve |
| CN205731828U (en) * | 2015-10-16 | 2016-11-30 | 漳州职业技术学院 | A kind of negative pressure feedback resorption ejector pin type glue dispensing valve |
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Also Published As
| Publication number | Publication date |
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| CN109290134A (en) | 2019-02-01 |
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