CN218531586U - Embedded glue metering pneumatic switch valve and gluing system - Google Patents
Embedded glue metering pneumatic switch valve and gluing system Download PDFInfo
- Publication number
- CN218531586U CN218531586U CN202222930260.1U CN202222930260U CN218531586U CN 218531586 U CN218531586 U CN 218531586U CN 202222930260 U CN202222930260 U CN 202222930260U CN 218531586 U CN218531586 U CN 218531586U
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- Prior art keywords
- glue
- head end
- seat
- valve rod
- switch valve
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- 239000003292 glue Substances 0.000 title claims abstract description 107
- 238000004026 adhesive bonding Methods 0.000 title claims description 6
- 238000005259 measurement Methods 0.000 claims abstract description 32
- 230000008676 import Effects 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 230000001050 lubricating effect Effects 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052721 tungsten Inorganic materials 0.000 claims description 9
- 239000010937 tungsten Substances 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 2
- 238000010073 coating (rubber) Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000000867 larynx Anatomy 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model discloses an embedded glue measurement pneumatic switch valve, including mounting panel and cylinder body and position sleeve, the head end of position sleeve is coaxial to be provided with fretwork seat, and the hollow out construction of fretwork seat side is the glue import, and the head end of fretwork seat is provided with the glue export, and the head end and the fretwork seat of position sleeve stretch into in the measurement jar, and coaxial arrangement has the valve rod in the position sleeve, and the head end of valve rod stretches out in the fretwork seat by the glue export, and the case is installed to the head end of valve rod, piston drive valve rod axial displacement to make the case shutoff or open the glue export. Because install the position sleeve and the fretwork seat portion of ooff valve in the measurement jar, subtract short runner length, convenient maintenance, the hollow out construction through the fretwork seat simultaneously increases the size of glue import and glue export, reduces the pressure drop value that the valve body produced, promotes the glue circulation, and convenient to detach installs, conveniently changes spare parts. The utility model discloses still disclose a rubber coating system including above-mentioned embedded glue measurement pneumatic switch valve.
Description
Technical Field
The utility model relates to a rubber coating equipment field especially relates to an embedded glue measurement pneumatic switch valve. Furthermore, the utility model discloses still relate to a rubber coating system including above-mentioned ooff valve.
Background
The gluing system is widely applied to a plurality of technical fields, and in the prior art, the gluing system fills glue in a stirring tank into a metering cylinder through a transfer pump, then ensures the glue outlet amount through accurate displacement, and controls the discharge of the glue in the metering cylinder through a switch valve. The switch valve needs to be installed on the metering cylinder body through a base, cannot be directly installed in the metering cylinder, increases the length of a flow channel, and is not easy to maintain. Meanwhile, the diameter of a glue inlet of the switch valve is small, so that a pressure drop value is generated on a valve body part, smooth circulation of glue is influenced, and the circulation is reduced.
Therefore, how to provide an embedded glue metering pneumatic switch valve which is convenient to maintain is a technical problem which needs to be solved by the technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an embedded glue measurement air operated switch valve, the position sleeve is installed in the measurement jar, convenient maintenance, and increases the glue import, promotes the circulation. Another object of the utility model is to provide a rubber coating system including above-mentioned ooff valve.
In order to solve the technical problem, the utility model provides an embedded glue measurement pneumatic switch valve, including the mounting panel and install in the cylinder body of the terminal surface of mounting panel with install in the position sleeve of mounting panel head end terminal surface, the head end of position sleeve is coaxial to be provided with fretwork seat, the hollow out construction of fretwork seat side is the glue import, the head end of fretwork seat is provided with the glue export, the head end of position sleeve with the fretwork seat stretches into in the measurement jar, coaxial arrangement has the valve rod in the position sleeve, the end of valve rod passes mounting panel and fixed connection piston in the cylinder body, the head end of valve rod by the glue export stretch out in the fretwork seat, the case is installed to the head end of valve rod, the piston drive valve rod axial displacement, so that the case shutoff or open the glue export.
Preferably, the hollow seat comprises a tail end ring and a head end ring which are coaxially arranged, a plurality of supporting rods which are uniformly distributed along the circumferential direction are arranged between the tail end ring and the head end ring, and the hollow structure between every two adjacent supporting rods is the glue inlet.
Preferably, the number of the struts is three, the diameter of the end ring is smaller than that of the head ring, and the middle part of each strut is provided with an arc-shaped bend.
Preferably, a guide sleeve is installed in the positioning sleeve, the valve rod penetrates through the guide sleeve, the tail end of the guide sleeve abuts against the installation plate, and the head end of the guide sleeve abuts against the hollowed seat.
Preferably, a gap is formed between the inner side of the guide sleeve and the outer side of the valve rod, a lubricating medium is filled in the gap, and a universal plug seal is arranged between the tail end of the guide sleeve and the mounting plate and between the head end of the guide sleeve and the hollow seat.
Preferably, the mounting panel upper edge is provided with the lubricating oil import, mounting panel side edge is provided with inefficacy larynx and seals the liquid export, and the level extends the downside is provided with the lubrication mouth on the uide bushing, the mounting panel with the position sleeve junction is provided with the passageway, the lubrication mouth communicates respectively the lubricating oil import with inefficacy larynx seals the liquid export.
Preferably, a locking nut for pressing the valve core is installed at the head end of the valve rod.
Preferably, a tungsten steel ring is installed at the glue outlet of the hollowed-out seat.
Preferably, the diameter of the tungsten steel ring is larger than that of the locating sleeve.
The utility model provides a gluing system, including the measurement jar and install in the embedded glue measurement pneumatic switch valve of measurement jar, embedded glue measurement pneumatic switch valve specifically is the arbitrary one of the aforesaid embedded glue measurement pneumatic switch valve.
The utility model provides an embedded glue measurement pneumatic switch valve, include the mounting panel and install in the cylinder body of the terminal surface of mounting panel and install in the position sleeve of mounting panel head end terminal surface, the head end of position sleeve is coaxial to be provided with the fretwork seat, the hollow out construction of fretwork seat side is the glue import, the head end of fretwork seat is provided with the glue export, the head end and the fretwork seat of position sleeve stretch into in the measurement jar, coaxial arrangement has the valve rod in the position sleeve, the end of valve rod passes the piston in mounting panel and the fixed connection cylinder body, the head end of valve rod stretches out in the fretwork seat by the glue export, the case is installed to the head end of valve rod, piston drive valve rod axial displacement, so that the case shutoff or open the glue export.
In the course of the work, glue in the measurement jar is inside by glue import entering fretwork seat, reaches the glue exit, and when needing to open, gaseous promotion piston moves to the head end, and then drives the valve rod and move to the head end along the axial, makes case and glue export separation, and glue is discharged by the glue export, when needing to close, makes the piston move to the end, and then drives the valve rod and move to the end along the axial, makes case shutoff glue export, and glue can't be discharged by the glue export. Because install the position sleeve and the fretwork seat portion of ooff valve in the measurement jar, subtract short runner length, convenient maintenance, the hollow out construction through the fretwork seat simultaneously increases the size of glue import and glue export, reduces the pressure drop value that the valve body produced, promotes the glue circulation, and convenient to detach installs, conveniently changes spare parts.
The utility model discloses still provide a rubber coating system including above-mentioned embedded glue measurement pneumatic switch valve, because above-mentioned embedded glue measurement pneumatic switch valve has above-mentioned technological effect, above-mentioned rubber coating system also should have same technological effect, no longer introduces in detail here.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of an embedded glue metering pneumatic switch valve provided by the present invention;
fig. 2 is an external schematic structural view of an embodiment of the embedded glue metering pneumatic switch valve provided by the present invention.
Detailed Description
The core of the utility model is to provide an embedded glue measurement air operated switch valve, the position sleeve is installed in the measurement jar, convenient maintenance, and increases the glue import, promotes the circulation. The utility model discloses another core provides a rubber coating system including above-mentioned ooff valve.
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic cross-sectional structural view of an embodiment of an embedded glue metering pneumatic switch valve provided by the present invention; fig. 2 is an external structural schematic diagram of a specific embodiment of the embedded glue metering pneumatic switch valve provided by the present invention.
The utility model discloses a specific embodiment provides an embedded glue measurement air switch valve, including mounting panel 1, cylinder body 2 and position sleeve 3, the one end that each part is close to cylinder body 2 is terminal, the one end of keeping away from cylinder body 2 is the head end, cylinder body 2 is installed in the terminal surface of mounting panel 1, position sleeve 3 is installed in the terminal end surface of mounting panel 1, and the head end of position sleeve 3 is coaxial to be provided with fretwork seat 4, the hollow out construction of fretwork seat 4 side is glue import 4-1, the head end of fretwork seat 4 is provided with glue export 4-2, make glue import 4-1 and glue export 4-2 intercommunication through the mode of fretwork, the axis of glue import 4-1 is perpendicular to fretwork seat 4 axis promptly, the axis of glue export 4-2 coincides with the axis of fretwork seat 4. During the installation, the head end of position sleeve 3 and fretwork seat 4 stretch into in the measurement jar, and further, still can be provided with corresponding connection structure on mounting panel 1, make the corresponding equipment of 1 surplus measurement jars of mounting panel stably connect, specifically, can adopt the mounting panel 1 of rectangle to at four mounting holes of 1 four corners of mounting panel setting, also can adopt other connected modes through bolted connection mounting panel 1 and measurement jar certainly, all be in the utility model discloses an within the protection scope.
Coaxial arrangement has valve rod 5 in the position sleeve 3, the end of valve rod 5 passes mounting panel 1 and the piston 6 in the fixed connection cylinder body 2, and set up the convenient dismouting of spanner groove, specifically, be provided with piston 6 in the cylinder body 2, the head end face of piston 6 is provided with the piston rod, the piston rod passes through the end of bolted connection valve rod 5, and be provided with the spring between piston 6 and the cylinder body 2, piston 6 removes to the head end and leans on gaseous promotion, piston 6 removes to the end and leans on the spring to promote, also can adopt other drive methods, if with the spring setting at the terminal surface of piston 6, or both ends do not set up the spring, all lean on gaseous promotion piston 6 to remove to both ends.
The head end of the valve rod 5 extends out of the hollow seat 4 through the glue outlet 4-2, the head end of the valve rod 5 is provided with a valve core 7, the valve core 7 is positioned outside the hollow seat 4, and the piston 6 drives the valve rod 5 to move axially, so that the valve core 7 blocks or opens the glue outlet 4-2. Furthermore, a conical surface facing the glue outlet 4-2 can be arranged on the valve core 7, so that the valve core 7 partially extends into the glue outlet 4-2, and the conical surface is tightly attached to the edge of the glue outlet 4-2, thereby ensuring the sealing effect.
In the working process, glue in the metering cylinder enters the hollow-out seat 4 from the glue inlet 4-1 to reach the glue outlet 4-2, when the metering cylinder needs to be opened, gas pushes the piston 6 to move towards the head end, the driving valve rod 5 further moves towards the head end along the axial direction, the valve core 7 is separated from the glue outlet 4-2, the glue is discharged from the glue outlet 4-2, when the metering cylinder needs to be closed, the piston 6 moves towards the tail end, the driving valve rod 5 further moves towards the tail end along the axial direction, the valve core 7 blocks the glue outlet 4-2, and the glue cannot be discharged from the glue outlet 4-2. Because the positioning sleeve 3 and the hollow seat 4 of the switch valve are partially installed in the metering cylinder, the length of a flow passage is shortened, the maintenance is convenient, the sizes of the glue inlet 4-1 and the glue outlet 4-2 are increased through the hollow structure of the hollow seat 4, the pressure drop value generated by the valve body is reduced, the glue circulation is improved, the disassembly and the installation are convenient, and spare parts are convenient to replace.
The utility model discloses in the embedded glue measurement pneumatic switch valve that embodiment mode provided, fretwork seat 4 is provided with a plurality of branches of evenly arranging along circumference including the end ring and the head end ring of coaxial setting between end ring and the head end ring, hollow out construction between the adjacent branch is glue import 4-1. Specifically, the hollow seat 4 can be understood as a cylindrical structure, the end ring and the head ring are respectively an opening at the head end and an opening at the tail end of the cylindrical structure, a plurality of through holes are dug on the side wall of the cylindrical structure, namely glue is imported into the hollow seat 4-1, the hollow structure can be formed, the valve rod 5 is imported from the holes of the end ring, the holes of the head ring stretch out, the holes of the head ring are glue exports 4-2, when the glue circulates, the glue enters the cylindrical structure from the holes on the side wall and then flows out from the holes of the head ring, and meanwhile, the holes of the end ring are blocked by related structures, so that the glue is prevented from overflowing. It is also understood that the coaxial and oppositely disposed leading and trailing rings are spaced apart from each other and a plurality of struts are disposed therebetween for support, and the operation is as described above.
Specifically, three supporting rods can be included, the three-part hollow structure form port can ensure the circulation under the effective structural strength, the structure of the equal-section flow through opening is adopted, the pressure drop value generated by the valve body part is reduced, the number of the supporting rods can be adjusted, namely, the number of corresponding hollow holes is adjusted, further, the diameter of the end ring is smaller than that of the head ring, the size of a glue outlet 4-2 is increased, meanwhile, the end ring holes can be conveniently sealed and blocked, the reliability of equipment is improved, the middle part of the supporting rods can be provided with arc-shaped bending, a smooth and complete structure is formed, and the installation and the processing are facilitated.
In order to ensure the smooth movement of the valve rod 5, a guide sleeve 8 is installed in the positioning sleeve 3, the guide sleeve 8 is coaxial with the positioning sleeve 3 and the valve rod 5, and the valve rod 5 penetrates through the guide sleeve 8, so that the valve rod 5 moves axially along the guide sleeve 8, and the extension length of the end part of the head end of the valve rod 5 is further controlled. The tail end of the guide sleeve 8 is abutted against the mounting plate 1, and the head end of the guide sleeve 8 is abutted against the hollowed-out seat 4, so that the axial position of the guide sleeve 8 is limited. Specifically, the end part of the guide sleeve 8 can be extended into the positioning hole at the corresponding position of the mounting plate 1, so that the guide sleeve 8 can be positioned and mounted conveniently.
Still can be provided with the recess in the middle part of 8 inboard sides of uide bushing, make and be provided with the clearance between 8 inboard sides of uide bushing and the valve rod 5 outside, be filled with lubricating medium in the clearance, make valve rod 5 remove more smoothly in uide bushing 8. Furthermore, in order to prevent the lubricating medium from leaking, the gap needs to be sealed, and therefore, the flooding plug seals 9 are arranged between the tail end of the guide sleeve 8 and the mounting plate 1 and between the head end of the guide sleeve 8 and the hollowed-out seat 4.
Preferably, the upper edge of the mounting plate 1 is provided with a lubricating oil inlet 1-1, the side edge of the mounting plate 1 is provided with a failed throat sealing liquid outlet 1-2, the upper side and the lower side of the horizontally extending guide sleeve 8 are provided with lubricating ports, and the joint of the mounting plate 1 and the positioning sleeve 3 is provided with a channel by processing a gap, a groove and other structures, so that the lubricating port on the upper side is communicated with the lubricating oil inlet 1-1, and the lubricating port on the lower side is communicated with the failed throat sealing liquid outlet 1-2. The throat sealing liquid enters the lubricating cavity of the guide sleeve 8 from the lubricating oil inlet 1-1 to lubricate the valve rod 5, the service life of a sealing element is prolonged, the sealing effect is improved, the failed throat sealing liquid can be discharged from the failed throat sealing liquid outlet 1-2, and the circulation under the effective structural strength can be ensured through the structural form of the through holes in four directions. And parts such as pipe joints and the like can be arranged at the lubricating oil inlet 1-1 and the failure throat sealing liquid outlet 1-2, so that the connection of related equipment is facilitated.
For fixed case 7, be provided with the external screw thread at valve rod 5 head end, during the installation, case 7 suit is at valve rod 5 head end, and offsets with the step on the valve rod 5, makes the external screw thread spill, then installs lock nut 10 at valve rod 5 head end, compresses tightly case 7 through lock nut 10, also can adopt other fixed mode certainly, if case 7 is direct with valve rod 5 threaded connection, or adopt modes such as joint, all be in the utility model discloses an within the protection scope. Meanwhile, sealing parts of sealing rings are arranged at the sealing positions of the device, so that the reliability of the device is ensured.
On the basis of the embedded glue metering pneumatic switch valve provided by each specific embodiment, a tungsten steel ring 11 is installed at a glue outlet 4-2 of the hollow seat 4, namely, a central hole of the tungsten steel ring 11 is the glue outlet 4-2, and the valve core 7 is pressed on the tungsten steel ring 11 during working. Through 11 lifting strength of tungsten steel ring, wherein fretwork seat 4 and 11 design that can the integral type of tungsten steel ring, also can divide the body certainly to design, and the contact surface sets up the chamfer, still can set up corresponding constant head tank at 4 head ends of fretwork seat, and wherein uide bushing 8 is the copper sheathing, also can adopt other materials, all is within the protection scope of the utility model.
Furthermore, the diameter of the tungsten steel ring 11 is larger than that of the positioning sleeve 3, so that the installation is convenient.
Except above-mentioned embedded glue measurement air operated switch valve, the utility model discloses a specific embodiment still provides a rubber coating system including above-mentioned embedded glue measurement air operated switch valve, and the structure of other each parts of this rubber coating system please refer to prior art, and this text is no longer repeated.
It is right above that the utility model provides an embedded glue measurement pneumatic switch valve and rubber coating system have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The utility model provides an embedded glue measurement air operated switch valve, its characterized in that, including mounting panel (1) and install in cylinder body (2) of mounting panel (1) terminal surface with install in position sleeve (3) of mounting panel (1) head end terminal surface, the head end of position sleeve (3) is coaxial to be provided with fretwork seat (4), the hollow out construction of fretwork seat (4) side is glue import (4-1), the head end of fretwork seat (4) is provided with glue export (4-2), the head end of position sleeve (3) with fretwork seat (4) stretch into in the measurement jar, coaxial arrangement has valve rod (5) in position sleeve (3), the end of valve rod (5) passes mounting panel (1) and fixed connection piston (6) in cylinder body (2), the head end of valve rod (5) by export glue (4-2) stretch out in fretwork seat (4), install case (7) of valve rod (5), piston (6) drive valve rod (5) axial displacement is in order to open glue export (2) or the shutoff glue export (4-1).
2. The embedded glue metering pneumatic switch valve according to claim 1, characterized in that the hollowed-out seat (4) comprises a tail end ring and a head end ring which are coaxially arranged, a plurality of support rods uniformly arranged along the circumferential direction are arranged between the tail end ring and the head end ring, and the hollowed-out structure between the adjacent support rods is the glue inlet (4-1).
3. The embedded glue metering pneumatic switch valve of claim 2, comprising three said struts, wherein the diameter of said end ring is smaller than that of said head ring, and the middle of said struts is provided with an arc-shaped bend.
4. The embedded glue metering pneumatic switch valve according to claim 1, characterized in that a guide sleeve (8) is installed in the positioning sleeve (3), the valve rod (5) penetrates through the guide sleeve (8), the tail end of the guide sleeve (8) abuts against the mounting plate (1), and the head end of the guide sleeve (8) abuts against the hollowed-out seat (4).
5. An embedded glue metering pneumatic switch valve according to claim 4, characterized in that a gap is provided between the inner side of the guide sleeve (8) and the outer side of the valve rod (5), the gap is filled with a lubricating medium, and a flooding seal (9) is provided between the tail end of the guide sleeve (8) and the mounting plate (1) and between the head end of the guide sleeve (8) and the hollowed seat (4).
6. The embedded glue metering pneumatic switch valve according to claim 5, characterized in that the upper edge of the mounting plate (1) is provided with a lubricating oil inlet (1-1), the side edge of the mounting plate (1) is provided with a failed throat sealing liquid outlet (1-2), the upper side and the lower side of the horizontally extending guide sleeve (8) are provided with lubricating ports, a channel is arranged at the joint of the mounting plate (1) and the positioning sleeve (3), and the lubricating ports are respectively communicated with the lubricating oil inlet (1-1) and the failed throat sealing liquid outlet (1-2).
7. The embedded glue metering pneumatic switch valve according to claim 1, characterized in that a locking nut (10) pressing the valve core (7) is mounted at the head end of the valve rod (5).
8. Embedded glue-metering pneumatic switch valve according to any of the claims 1 to 7, characterized by the fact that at the glue outlet (4-2) of the hollowed-out seat (4) is mounted a tungsten-steel ring (11).
9. Embedded glue-metering pneumatic switch valve according to claim 8, characterized in that the diameter of the tungsten steel ring (11) is greater than the diameter of the positioning sleeve (3).
10. A gluing system, characterized in that it comprises a metering cylinder and an embedded glue-metering pneumatic on-off valve mounted on the metering cylinder, in particular an embedded glue-metering pneumatic on-off valve according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222930260.1U CN218531586U (en) | 2022-11-03 | 2022-11-03 | Embedded glue metering pneumatic switch valve and gluing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222930260.1U CN218531586U (en) | 2022-11-03 | 2022-11-03 | Embedded glue metering pneumatic switch valve and gluing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218531586U true CN218531586U (en) | 2023-02-28 |
Family
ID=85261305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222930260.1U Active CN218531586U (en) | 2022-11-03 | 2022-11-03 | Embedded glue metering pneumatic switch valve and gluing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218531586U (en) |
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2022
- 2022-11-03 CN CN202222930260.1U patent/CN218531586U/en active Active
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Denomination of utility model: An embedded glue metering pneumatic on-off valve and glue coating system Effective date of registration: 20231031 Granted publication date: 20230228 Pledgee: Industrial Bank Co.,Ltd. Shanghai Exchange Branch Pledgor: Wangshe (Shanghai) Automation Technology Co.,Ltd. Registration number: Y2023310000704 |