CN112827757A - Piston type glue sealing valve for numerical control sealing glue dispenser - Google Patents
Piston type glue sealing valve for numerical control sealing glue dispenser Download PDFInfo
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- CN112827757A CN112827757A CN202110174509.8A CN202110174509A CN112827757A CN 112827757 A CN112827757 A CN 112827757A CN 202110174509 A CN202110174509 A CN 202110174509A CN 112827757 A CN112827757 A CN 112827757A
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- sealing
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention relates to the field of sealing dispenser equipment, in particular to a piston type glue sealing valve for a numerical control sealing dispenser, which comprises a spindle chamber, a spindle, a stirring head, a channel chamber, a glue valve B, a glue valve A, a stirring cup, a servo motor, a coupler, a locking nut, a glue outlet nozzle and a glue sealing valve assembly, wherein the servo motor is arranged at the upper part of the spindle chamber and connected with the spindle chamber, and the servo motor is provided with the coupler.
Description
Technical Field
The invention relates to the field of sealing glue dispensing machine equipment, in particular to a piston type glue sealing valve for a numerical control sealing glue dispensing machine.
Background
The glue dispenser is also called a glue dispenser, a glue dispenser and the like, is suitable for processing technologies such as polymerization reaction sealing, gluing, pouring and the like which are carried out by liquid glue in a flowing or viscous state, a mechanical part generally adopts three-axis linkage, can be used for gluing plane products (also can be suitable for square, circular and various special-shaped patterns), and also can carry out three-dimensional gluing.
At present, the head of the existing numerical control sealing dispensing machine in China easily causes the combination of the starting point and the ending point of a dispensing adhesive tape while the glue dripping of the head of the dispensing machine and the open and close delay of a glue sealing valve are insensitive due to the structural design of the glue sealing valve, greatly influences the quality of the dispensing adhesive tape, further influences the sealing effect of the product after dispensing, and cannot meet the production and use requirements of enterprises.
Disclosure of Invention
The invention aims to provide a piston type glue sealing valve for a numerical control sealing glue dispenser, which is arranged on a machine head of the numerical control glue dispenser, can carry out very quick and accurate sealing operation on a glue outlet nozzle of the glue dispenser machine head when in use, further avoids the glue dripping phenomenon of the glue dispenser machine head caused by insensitive opening and closing delay of a glue sealing valve, ensures the combination of a starting point and an ending point of a glue dispensing adhesive tape and meets the use requirements of enterprises.
In order to achieve the purpose, the invention adopts the following technical scheme:
a piston type glue sealing valve for a numerical control sealing glue dispenser comprises a main shaft chamber, a main shaft, a stirring head, a channel chamber, a glue valve B, a glue valve A, a stirring cup, a servo motor, a coupler, a locking nut, a glue outlet nozzle and a glue sealing valve component, wherein the servo motor is arranged at the upper part of the main shaft chamber and is connected with the main shaft chamber, the coupler is arranged on the servo motor, the main shaft is arranged on the coupler in the main shaft chamber and is fixedly connected with the coupler, the channel chamber is arranged at the lower part of the main shaft chamber and is connected with the main shaft chamber through a connecting bolt, the stirring cup is arranged at the lower part of the channel chamber and is connected with the channel chamber, the glue valve B is arranged at the left part of the channel chamber and is connected with the channel chamber through a connecting bolt, the glue valve A is arranged at the right part of the channel chamber and is connected with the channel chamber through a, the upper part of the stirring head is arranged on the main shaft and is connected with the main shaft, the glue sealing valve component is arranged at the lower part of the stirring cup and is connected with the stirring cup through a connecting bolt, the glue outlet nozzle is arranged on the glue sealing valve component, and the glue outlet nozzle is locked at the lower part of the glue sealing valve component through a locking nut.
The glue sealing valve assembly is used for sealing a glue outlet nozzle and specifically comprises a piston chamber, a piston I, a piston II, a piston cover I, a piston cylinder I, a piston cover II, a gas pipe joint I, a gas pipe joint II, a piston valve core rod sleeve I, a piston valve core rod sleeve II, a piston valve core and a piston cylinder II, wherein the piston cylinder I and the piston cylinder cover II are arranged on two side parts of the piston chamber and are connected with the piston chamber through connecting bolts, the piston cover I is arranged on the left side part of the piston cylinder I and is connected with the piston cylinder I through the connecting bolts, the piston cover II is arranged on the right side part of the piston cylinder II and is connected with the piston cylinder II through the connecting bolts, a valve core mounting through hole is processed in the piston chamber, a step hole I and a step hole II are processed on two sides of the valve core mounting through hole, the step hole I is communicated with the step hole II through the valve core mounting, the piston valve core is arranged in a valve core mounting through hole processed in the piston chamber, the piston I and the piston II are respectively arranged on the end parts of the two sides of the piston valve core and are respectively connected with the piston I and the piston II, the piston valve core rod sleeve I is arranged in the stepped hole I and is connected with the stepped hole I, the piston valve core rod sleeve II is arranged in the stepped hole II and is connected with the stepped hole II, the air pipe joint I is arranged on the piston cover I and is connected with the piston cover I, and the air pipe joint II is arranged on the piston cover II and is connected with the piston cover II.
The piston valve core is provided with an annular groove.
Annular grooves are formed in the stirring cup, the piston I, the piston II, the piston cover I, the piston cylinder I, the piston cover II and the piston valve core, and sealing rubber rings are installed in the annular grooves.
The channel chamber and the stirring cup are both internally provided with cavities, and the cavities in the channel chamber and the stirring cup are communicated.
The main shaft and the stirring head are coaxially arranged.
And a flushing valve is arranged on the side surface of the stirring cup and is connected with the stirring cup.
The piston valve core rod sleeve I, the piston valve core rod sleeve II and the piston valve core are made of tetrafluoroethylene.
The invention has the beneficial effects that: the invention has scientific integral structure design and simple and convenient installation and use, is mainly installed on the head of the numerical control dispenser under the common installation and matching operation of the components such as the locking nut, the glue outlet nozzle, the glue sealing valve component and the like, can carry out very quick and accurate sealing operation on the glue outlet nozzle of the glue dispenser head when in use, further avoids the glue dripping phenomenon of the glue dispenser head caused by insensitive opening and closing delay of the head glue dripping and the glue sealing valve of the glue dispenser, ensures the combination of the starting point and the ending point of a glue dispensing adhesive tape, further ensures the glue coating operation effect and the operation quality of a glue coating product, and greatly meets the operation and use requirements of an enterprise on the glue dispenser.
Drawings
FIG. 1 is a schematic view of the overall mounting structure of the present invention;
FIG. 2 is a schematic view of a sealing assembly according to the present invention;
FIG. 3 is an exploded view of the structure of the sealing valve assembly of the present invention;
FIG. 4 is a schematic diagram of the piston core of the present invention;
FIG. 5 is a schematic view of the piston chamber of the present invention;
the reference numbers in the figures are: 1-spindle chamber, 2-spindle, 3-stirring head, 4-channel chamber, 5-B glue valve, 6-A glue valve, 7-stirring cup, 8-servo motor, 9-coupler, 10-locking nut, 11-glue outlet, 12-glue sealing valve component, 13-piston chamber, 14-piston I, 15-piston II, 16-piston cover I, 17-piston cylinder I, 18-piston cover II, 19-air pipe joint I, 20-air pipe joint II, 21-piston valve core rod sleeve I, 22-piston valve core rod sleeve II, 23-piston valve core, 24-valve core installation through hole, 25-stepped hole I, 26-stepped hole II, 27-annular groove, 28-annular groove, 29-sealing rubber ring, 30-flush valve, 31-piston cylinder I I.
Detailed Description
Specific example 1: the core of the invention is to provide a piston type glue sealing valve for a numerical control sealing glue dispenser, which is mainly installed on the machine head of the numerical control glue dispenser under the common installation and matching operation of a locking nut 10, a glue outlet nozzle 11, a glue sealing valve component 12 and other components, when in use, the glue outlet nozzle of the glue dispenser head can be rapidly and accurately sealed, thereby avoiding the glue dripping phenomenon of the glue dispenser head caused by the insensitive opening and closing delay of a glue sealing valve of a glue dispenser, ensuring the combination of the starting point and the ending point of a glue dispensing adhesive tape, in order to make the technical solution of the present invention better understood, the present invention is further described in detail with reference to the drawings and the detailed description of the present invention, which are described below, when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in this specification to denote orientation are used with reference to a particular structure shown in the drawings, and do not constitute a limitation on the structure. As shown in the attached drawings 1-5 of the specification, a piston type glue sealing valve for a numerical control sealing dispensing machine mainly comprises a main shaft chamber 1, a main shaft 2, a stirring head 3, a channel chamber 4, a glue valve B5, a glue valve A6, a stirring cup 7, a servo motor 8, a coupler 9, a locking nut 10, a glue outlet 11 and a glue sealing valve component 12, wherein the servo motor 8 for driving the main shaft 2 to rotate is fixedly arranged at the upper part of the main shaft chamber 1, a cavity is arranged in the main shaft chamber 1, the coupler 9 is arranged at the power output end of the servo motor 8, the main shaft 2 is arranged on the coupler 2 in the main shaft chamber 1 and is fixedly connected with the coupler 2, the channel chamber 4 for installing the glue valve B5 and the glue valve A6 is arranged at the lower part of the main shaft chamber 1 and is connected with the main shaft chamber 1 through a connecting bolt, the stirring cup 7 for installing the stirring head 3 is arranged at the lower part of the channel chamber 4 through a threaded, a glue valve B5 for supplying glue in the channel chamber 4 is arranged at the left part of the channel chamber 4 and is connected with the channel chamber 4 through a connecting bolt, a glue valve A6 for supplying glue in the channel chamber 4 is arranged at the right part of the channel chamber 4 and is connected with the channel chamber 4 through a connecting bolt, the upper part of a stirring head 3 for mixing and stirring glue in a stirring cup 7 is arranged on a main shaft 2 and is connected with the main shaft 2, a glue sealing valve component 12 is arranged at the lower part of the stirring cup 7 and is connected with the stirring cup 7 through a connecting bolt, a glue outlet nozzle 11 is arranged on the glue sealing valve component 12, the glue outlet nozzle 11 is locked at the lower part of the glue sealing valve component 12 through a locking nut 10, and the glue sealing valve component 12 is used for sealing the glue outlet nozzle 11 and specifically comprises a piston chamber 13, a piston I14, a piston II15, a piston cover I16, a piston I17, a piston cover II18 and a piston cylinder II, The air pipe joint I19, the air pipe joint II20, the piston valve core rod sleeve I21, the piston valve core rod sleeve II22, the piston valve core 23 and the piston cylinder II31, the piston cylinder I17 and the piston cylinder II31 are arranged on two sides of the piston chamber 13 and are connected with the piston chamber 13 through connecting bolts, the piston cover I16 is arranged on the left side of the piston cylinder I17 through connecting bolts, the piston cover II18 is arranged on the right side of the piston cylinder II31 through connecting bolts, a valve core mounting through hole 24 is processed in the piston chamber 13, a stepped hole I25 and a stepped hole II26 are processed on two sides of the valve core mounting through hole 24, the stepped hole I25 is communicated with the stepped hole II26 through the valve core mounting through hole 24 processed in the piston chamber 13, an annular groove 27 is opened on the piston valve core 23, the piston I14 and the piston II15 are respectively and fixedly arranged on two sides of the piston valve core 23, a piston valve core rod sleeve I21 for side sealing the piston valve core 23 is arranged in a stepped hole I25, a piston valve core rod sleeve II22 for side sealing the piston valve core 23 is arranged in a stepped hole II26, an air inlet pipe joint I19 for pushing a piston I14 in a piston cylinder I17 is arranged on a piston cover I16 and is connected with a piston cover I16, an air inlet pipe joint II20 for pushing the piston II15 in a piston cylinder II31 is arranged on a piston cover II18 and is connected with a piston cover II18, annular grooves 28 are respectively arranged on the stirring cup 7, the piston I14, the piston II15, the piston cover I16, the piston cylinder I17, the piston cover II18 and the piston valve core 23, a sealing rubber ring 29 is arranged in the annular groove 28, when the invention is used specifically, firstly, external glue enters the channel chamber 4 from a glue valve B5 and an glue valve A6 and enters the stirring cup 7 from the channel chamber 4, at this moment, an operator can control the servo motor 8 to work and drive the main shaft 2 to rotate, the main shaft 2 drives the stirring head 3 arranged at the lower part of the main shaft to mix glue solution in the stirring cup 7 when rotating, the mixed glue solution flows downwards to the upper part of the glue sealing valve component 12 under the action of gravity and flows out from the glue outlet nozzle 11, when the glue outlet nozzle 11 needs to be controlled in a glue outlet sealing way, firstly, a piston cylinder I17, a piston cylinder II31, a piston I14, a piston II15, a piston valve core 23 and the piston chamber 13 at two sides of the piston chamber 13 jointly form a sealed air chamber, when compressed air enters a left air pipe connector I19 to push the piston I14 to drive the piston valve core 23 to move rightwards in the valve core installation through hole 24, at this moment, an annular groove 27 on the piston valve core 23 is positioned at the upper part of the glue outlet nozzle 11, at this moment, the glue outlet nozzle 11 is communicated with a cavity, the glue solution flows from the lower part of the stirring cup 7 to the glue outlet nozzle 11 to be discharged for glue dispensing operation, when the glue outlet nozzle 11 needs to be sealed, the compressed air enters the air pipe joint II20 at the right side to push the piston II15 to drive the piston valve core 23 to move leftwards in the valve core mounting through hole 24, at the moment, the outer cylinder on the piston valve core 23 is positioned at the upper part of the glue outlet nozzle 11 to seal the cavity at the lower part of the glue outlet nozzle 11 and the stirring cup 7, the glue can not flow from the lower part of the stirring cup 7 to the glue outlet nozzle 11 to further complete the sealing operation of the glue outlet nozzle 11, and it needs to be further pointed out that the piston valve core rod sleeve I21, the piston valve core rod sleeve II22 and the piston valve core 23 are all made of tetrafluoroethylene which has the characteristics of wear resistance, glue non-sticking and the like, and the characteristics of the tetrafluoroethylene material are utilized, the sealing glue valve can be opened and closed more smoothly and reliably without adhesion, and the reciprocating sealing glue valve can close and break glue in time. According to the technical scheme, the quick opening and closing of the glue sealing valve can be realized, the problem that glue drips when the head of the glue dispenser works is solved, the starting point and the ending point of the glue dispensing adhesive tape are perfectly combined, the quality of the adhesive tape is improved, and the perfect product sealing effect is realized. The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. A piston type glue sealing valve for a numerical control sealing dispensing machine is characterized by comprising a main shaft chamber, a main shaft, a stirring head, a channel chamber, a glue valve B, a glue valve A, a stirring cup, a servo motor, a coupler, a locking nut, a glue outlet nozzle and a glue valve assembly, wherein the servo motor is arranged at the upper part of the main shaft chamber and connected with the main shaft chamber, the servo motor is provided with the coupler, the main shaft is arranged on the coupler in the main shaft chamber and fixedly connected with the coupler, the channel chamber is arranged at the lower part of the main shaft chamber and connected with the main shaft chamber through a connecting bolt, the stirring cup is arranged at the lower part of the channel chamber and connected with the channel chamber, the glue valve B is arranged at the left part of the channel chamber and connected with the channel chamber through a connecting bolt, the glue valve A is arranged at the right part of the channel chamber and connected with the channel chamber through a connecting bolt, the upper part of the stirring head is arranged on the main shaft and is connected with the main shaft, the glue sealing valve component is arranged at the lower part of the stirring cup and is connected with the stirring cup through a connecting bolt, the glue outlet nozzle is arranged on the glue sealing valve component, and the glue outlet nozzle is locked at the lower part of the glue sealing valve component through a locking nut.
2. The piston type glue sealing valve for the numerical control sealing dispensing machine according to claim 1, characterized in that the glue sealing valve assembly is used for sealing the glue outlet nozzle, and specifically comprises a piston chamber, a piston I, a piston II, a piston cap I, a piston cylinder I, a piston cap II, a gas pipe joint I, a gas pipe joint II, a piston valve core rod sleeve I, a piston valve core rod sleeve II, a piston valve core and a piston cylinder II, wherein the piston cylinder I and the piston cylinder cap II are arranged on two side parts of the piston chamber and connected with the piston chamber through a connecting bolt, the piston cap I is arranged on the left side part of the piston cylinder I and connected with the piston cylinder I through a connecting bolt, the piston cap II is arranged on the right side part of the piston cylinder II and connected with the piston cylinder II through a connecting bolt, a valve core mounting through hole is processed in the piston chamber, a stepped hole I and a stepped hole II are processed on two sides of the valve core mounting through hole, the piston valve core rod sleeve I is arranged in the stepped hole I and is connected with the stepped hole I, the piston valve core rod sleeve II is arranged in the stepped hole II and is connected with the stepped hole II, the air pipe joint I is arranged on the piston cover I and is connected with the piston cover I, and the air pipe joint II is arranged on the piston cover II and is connected with the piston cover II.
3. The piston-type glue sealing valve for the numerical control sealing dispensing machine according to claim 2, wherein an annular groove is formed in the piston valve core.
4. The piston type glue sealing valve for the numerical control sealing dispensing machine according to claim 2, wherein annular grooves are formed in the stirring cup, the piston I, the piston II, the piston cover I, the piston cylinder I, the piston cover II and the piston valve core, and sealing rubber rings are installed in the annular grooves.
5. The piston-type glue sealing valve for the numerical control sealed glue dispensing machine as claimed in claim 1, wherein the passage chamber and the stirring cup are provided with cavities therein, and the cavities therein are communicated with each other.
6. The piston-type glue sealing valve for the numerical control sealed glue dispensing machine as claimed in claim 1, wherein the main shaft and the stirring head are coaxially arranged.
7. The piston type glue sealing valve for the numerical control sealed glue dispensing machine as claimed in claim 1, wherein a flushing valve is installed on a side surface of the stirring cup, and the flushing valve is connected with the stirring cup.
8. The piston-type glue sealing valve for the numerical control sealed glue dispensing machine according to claim 2, wherein the piston valve core rod sleeve I, the piston valve core rod sleeve II and the piston valve core are made of tetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174509.8A CN112827757B (en) | 2021-02-07 | 2021-02-07 | Piston type glue sealing valve for numerical control sealing glue dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174509.8A CN112827757B (en) | 2021-02-07 | 2021-02-07 | Piston type glue sealing valve for numerical control sealing glue dispenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112827757A true CN112827757A (en) | 2021-05-25 |
| CN112827757B CN112827757B (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110174509.8A Active CN112827757B (en) | 2021-02-07 | 2021-02-07 | Piston type glue sealing valve for numerical control sealing glue dispenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112827757B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769060A (en) * | 2021-07-29 | 2022-07-22 | 大连华工创新科技股份有限公司 | Three-component hose rubber nozzle gluing head |
| CN115041359A (en) * | 2022-06-02 | 2022-09-13 | 洛阳市锐创电气设备有限公司 | Ceramic on-off valve for numerical control sealing dispensing machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294197A2 (en) * | 1987-06-03 | 1988-12-07 | Loctite Corporation | Sealless dispensing mechanism |
| JP2008000717A (en) * | 2006-06-23 | 2008-01-10 | Nitto Seiko Co Ltd | Dispenser device |
| CN104759390A (en) * | 2015-04-02 | 2015-07-08 | 大连华工创新科技股份有限公司 | Gate valve type glue coating head |
| CN106733472A (en) * | 2017-01-11 | 2017-05-31 | 大连华工创新科技股份有限公司 | A kind of double-component gluing head |
| CN110252600A (en) * | 2019-07-15 | 2019-09-20 | 上海善佳机械设备有限公司 | A kind of high pressure gluing valve body |
| CN214487621U (en) * | 2021-02-07 | 2021-10-26 | 洛阳市锐创电气设备有限公司 | Piston type glue sealing valve for numerical control sealing glue dispenser |
-
2021
- 2021-02-07 CN CN202110174509.8A patent/CN112827757B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294197A2 (en) * | 1987-06-03 | 1988-12-07 | Loctite Corporation | Sealless dispensing mechanism |
| JP2008000717A (en) * | 2006-06-23 | 2008-01-10 | Nitto Seiko Co Ltd | Dispenser device |
| CN104759390A (en) * | 2015-04-02 | 2015-07-08 | 大连华工创新科技股份有限公司 | Gate valve type glue coating head |
| CN106733472A (en) * | 2017-01-11 | 2017-05-31 | 大连华工创新科技股份有限公司 | A kind of double-component gluing head |
| CN110252600A (en) * | 2019-07-15 | 2019-09-20 | 上海善佳机械设备有限公司 | A kind of high pressure gluing valve body |
| CN214487621U (en) * | 2021-02-07 | 2021-10-26 | 洛阳市锐创电气设备有限公司 | Piston type glue sealing valve for numerical control sealing glue dispenser |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769060A (en) * | 2021-07-29 | 2022-07-22 | 大连华工创新科技股份有限公司 | Three-component hose rubber nozzle gluing head |
| CN115041359A (en) * | 2022-06-02 | 2022-09-13 | 洛阳市锐创电气设备有限公司 | Ceramic on-off valve for numerical control sealing dispensing machine |
| CN115041359B (en) * | 2022-06-02 | 2023-10-13 | 洛阳市锐创电气设备有限公司 | Ceramic on-off valve for numerical control sealing dispensing machine |
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| CN112827757B (en) | 2022-09-02 |
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