CN111841922B - Pneumatic cold glue spray gun - Google Patents
Pneumatic cold glue spray gun Download PDFInfo
- Publication number
- CN111841922B CN111841922B CN202010873748.8A CN202010873748A CN111841922B CN 111841922 B CN111841922 B CN 111841922B CN 202010873748 A CN202010873748 A CN 202010873748A CN 111841922 B CN111841922 B CN 111841922B
- Authority
- CN
- China
- Prior art keywords
- gun body
- needle bar
- needle
- piston
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007921 spray Substances 0.000 title claims abstract description 48
- 239000003292 glue Substances 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a pneumatic cold glue spray gun which is characterized by comprising a gun body and an electromagnetic valve assembly connected to the rear end of the bottom of the gun body, wherein the gun body is U-shaped, a needle rod piston assembly is arranged in the gun body in a penetrating manner, a needle rod guide pipe is further arranged at a gap in the middle of the gun body, and the needle rod guide pipe is sleeved on a needle rod; the front end of the needle bar piston assembly is wrapped by the spray head assembly, and the rear end of the needle bar piston assembly is connected with the needle bar adjusting assembly; the front end of the bottom of the gun body is provided with a material joint which is communicated with a feed pipe in the gun body; the lower end of the tail part of the gun body is provided with a needle bar control joint and an air passage joint which are arranged side by side, the needle bar control joint is used for controlling the needle bar piston assembly to move in the gun body by air supply, and the air passage joint is used for scattering materials by air supply; the electromagnetic valve assembly tail is also provided with an electromagnetic valve socket. The intelligent control spray gun of the invention sprays and sprays materials, and realizes uniform and quantitative spraying and spraying of the materials; meanwhile, the spray head has double cleaning functions, avoids spray head blockage and has long service life.
Description
Technical Field
The invention relates to the technical field of logistics packaging equipment, in particular to a pneumatic cold glue spray gun.
Background
A spray gun is a device that uses liquid or compressed air to rapidly release as a motive force. In the common spraying places, particularly in places with high-speed packaging, the spraying of materials is difficult to uniformly and quantitatively dose, and the packaging speed is improved. Meanwhile, in the use process of the glue gun, as the glue has condensation property, the glue is easy to cause blockage of the spray head because workers forget to clean the glue after operation, and the use is influenced.
Disclosure of Invention
Based on the above, the invention provides the pneumatic cold glue spray gun, the needle bar of the glue spray gun is optimized, the hollow needle bar is adopted, and meanwhile, a plurality of gas pipelines are designed to operate the material in a high-pressure atomization mode, so that the purposes of uniform and quantitative spraying and sprinkling of the material are realized.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
The pneumatic cold glue spray gun comprises a gun body and an electromagnetic valve assembly connected to the rear end of the bottom of the gun body, wherein the gun body is U-shaped, a needle rod piston assembly is arranged in the gun body in a penetrating manner, the needle rod piston assembly comprises a piston and a needle rod, the inside of the needle rod is hollow, the tail of the needle rod is connected to the piston, a needle rod pipeline and a piston cavity for accommodating the needle rod and the piston are respectively formed in the gun body, a needle rod guide pipe is further arranged at a gap in the middle of the gun body, and the needle rod guide pipe is sleeved on the needle rod; the front end of the needle bar piston assembly is wrapped by the spray head assembly, the rear end of the needle bar piston assembly is connected with the needle bar adjusting assembly, and the needle bar adjusting assembly is arranged at the upper end of the tail part of the gun body through the adjusting cylinder body; the front end of the bottom of the gun body is provided with a material joint which is communicated with a feed pipe in the gun body; the lower extreme of rifle body afterbody still is equipped with the needle bar control joint and the gas circuit joint that set up side by side, needle bar control joint is used for the air feed control needle bar piston assembly to move in the rifle body, the gas circuit interface is used for the air feed to break up the material, solenoid valve assembly afterbody still is equipped with solenoid valve socket.
Further, the shower nozzle subassembly includes shower nozzle lock nut, shower nozzle dustcoat and shower nozzle, shower nozzle dustcoat cover is established at the shower nozzle periphery, rifle body front end is equipped with the bellying, bellying surface middle part is equipped with the entry of needle bar pipeline, is equipped with four shower nozzle gas pockets around the entry outside at least, the shower nozzle gas pocket with the inlet pipe way is linked together, shower nozzle lock nut is fixed shower nozzle dustcoat and shower nozzle on the bellying.
Further, the needle bar comprises a hollow channel and an air inlet hole, and the air inlet hole is communicated with a piston gun body formed in the gun body; the piston comprises a sealing ring A, a set screw and a sealing ring B, wherein the sealing ring A and the sealing ring B are respectively sleeved at the front end and the rear end of the piston, the set screw is arranged in the middle of the piston, and the set screw is used for locking a needle rod in the piston.
Further, the gas circuit joint is communicated with a gas circuit pipeline inside the gun body, and the tail end of the gas circuit pipeline is converged with the feeding pipeline.
Further, the needle bar control joint is communicated with a gun needle gas pipeline which is also communicated with the piston chamber.
Further, the needle bar adjusting assembly comprises an adjusting handle, an adjusting cylinder body and a needle bar adjusting spring, wherein the adjusting handle is rotatably connected to the tail of the adjusting cylinder body, and the spring is connected to the front end of the adjusting cylinder body and is used for providing spring stress for the movement of the needle bar piston assembly.
Further, an adjusting component pipeline communicated with the hollow channel is arranged inside the needle bar adjusting component in a penetrating mode.
The invention has the beneficial effects that:
(1) The device can spray and spray materials by the spray gun in an intelligent control mode, can finish uniform and quantitative spraying and sprinkling of the materials, meets the requirements of different places, and has wide application range;
(2) Opening and closing can both purge the gun body inside, thereby ensuring the cleanness of the gun body inside and prolonging the service life.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of the split structure of the present invention;
FIG. 4 is a schematic view of the needle bar piston assembly of the present invention;
FIG. 5 is a schematic cross-sectional view of a needle bar piston assembly of the present invention;
FIG. 6 is a schematic view of a showerhead assembly of the present invention;
FIG. 7 is a schematic view of the needle bar adjustment assembly of the present invention;
FIG. 8 is a schematic diagram of the cross-sectional structure of the middle part of the gun body of the invention;
FIG. 9 is a schematic view of the left side cross-sectional structure of the gun body of the present invention;
FIG. 10 is a schematic view of the right side cross-sectional structure of the gun body of the present invention.
FIG. 11 is a schematic cross-sectional view of another embodiment of the present invention
In the figure: 1-a gun body, 11-a spray nozzle air hole, 12-a feeding pipeline and 13-a gas path pipeline; 14-a piston chamber; 15-gun needle gas pipelines, 16-needle bar pipelines, 2-needle bar adjusting components, 21-adjusting handles, 22-adjusting cylinders, 23-needle bar adjusting springs, 24-adjusting component pipelines, 3-needle bar control joints, 4-gas circuit joints, 5-electromagnetic valve components, 51-electromagnetic valve sockets, 6-material joints, 7-nozzle components, 71-nozzle locking nuts, 72-nozzle covers and 73-nozzles; 8-needle bar piston assembly, 81-piston, 811-sealing ring A, 812-set screw; 813-a seal ring B; 82-needle bar, 821-hollow channel; 822-air inlet hole, 9-needle bar conduit.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiments, and the terms "upper," "lower," "left," "right," "front," "back," and the like are used herein with reference to the positional relationship of the drawings.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Embodiment one:
the pneumatic cold glue spray gun comprises a gun body 1 and an electromagnetic valve assembly 5 connected to the rear end of the bottom of the gun body 1, wherein the gun body 1 is U-shaped, a needle bar piston assembly 8 is arranged in the gun body 1 in a penetrating manner, the needle bar piston assembly 8 comprises a piston 81 and a needle bar 82, the inside of the needle bar 82 is hollow, the tail part of the needle bar 82 is connected to the piston 81, a needle bar pipeline 16 and a piston cavity 14 for accommodating the needle bar 82 and the piston 81 are respectively formed in the gun body 1, a needle bar guide pipe 9 is further arranged at a gap in the middle of the gun body 1, and the needle bar guide pipe 9 is sleeved on the needle bar 82; the front end of the needle bar piston assembly 8 is wrapped by the spray head assembly 7, the rear end of the needle bar piston assembly 8 is connected with the needle bar adjusting assembly 2, and the needle bar adjusting assembly 2 is arranged at the upper end of the tail part of the gun body 1 through the adjusting cylinder body 22; the front end of the bottom of the gun body 1 is provided with a material joint 6, and the material joint 6 is communicated with a feeding pipeline 12 in the gun body 1; the lower end of the tail of the gun body 1 is also provided with a needle bar control joint 3 and an air path joint 4 which are arranged side by side, the needle bar control joint 3 is used for controlling the needle bar piston assembly 8 to move in the gun body 1 by air supply, and specifically, under the control action of the needle bar control joint 3, the piston 81 moves back and forth in the piston chamber 14, so as to drive the needle bar to prop against the spray head 73 and open the spray head 73. The air passage interface is used for supplying air to break up materials, and the tail part of the electromagnetic valve assembly 5 is also provided with an electromagnetic valve socket 51.
In this embodiment, the nozzle assembly 7 includes a nozzle locking nut 71, a nozzle housing 72, and a nozzle 73, the nozzle housing 72 is disposed around the nozzle 73, a protruding portion is disposed at the front end of the gun body 1, an inlet of the needle bar pipeline 16 is disposed in the middle of the surface of the protruding portion, at least four nozzle air holes 11 are disposed around the outer side of the inlet, the nozzle air holes 11 are communicated with the feeding pipeline 12, and the nozzle 73 locking nut fixes the nozzle housing 72 and the nozzle 73 to the protruding portion.
In this embodiment, the needle bar 82 includes a hollow passage 821 and an air intake hole 822, the air intake hole 822 communicating with the piston 81 formed inside the gun body 1; the piston 81 includes sealing washer A811, holding screw 812 and sealing washer B813, and sealing washer A811 and sealing washer B813 overlap respectively and establish at the front and back both ends of piston 81, and holding screw 812 is established at the middle part of piston 81, and holding screw 812 is used for locking needle bar 82 in the inside of piston 81.
In this embodiment, the air passage joint 4 is connected to an air passage pipe 13 inside the gun body 1, and the tail end of the air passage pipe 13 merges with the feed pipe 12.
In this particular embodiment, the needle control interface communicates with a needle gas line 15, the needle gas line 15 also communicating with the piston chamber 14.
In this particular embodiment, the needle bar adjusting assembly 2 comprises an adjusting handle 21, an adjusting cylinder 22 and a needle bar adjusting spring 23, the adjusting handle 21 being rotatably connected to the tail of the adjusting cylinder 22, the spring being connected to the front end of the adjusting cylinder 22 for providing a spring stress for the movement of the needle bar piston 81 assembly.
When the glue gun is not used, the needle bar control joint 3 is communicated with the right side of the cavity of the piston 81, and the needle bar 82 control pipeline is communicated with the left cavity of the piston 81 through an electromagnetic valve; normally the piston 81 extends out, the needle bar 82 blocks the spray head 73, and the material joint 6 is closed;
When the solenoid valve is energized, the needle gas line communicates with the left chamber of the piston 81, and the needle rod 82 correspondingly retracts because the cross-sectional area of the chamber is substantially greater than the cross-sectional area of the extended chamber. Gas is flushed through the inlet holes 822 of the needle 82 and along the tubing toward the spray head assembly 7, thereby purging the nozzles and needle. At this time, after the needle bar leaves the spray head 73, the material joint 6 is opened, and the material starts to be conveyed to the feeding pipeline; correspondingly, the air passage joint 4 is opened, high-pressure air is connected and blown in along the air passage pipeline, and because the air passage pipeline is also communicated with the four air holes of the spray heads 73 through the internal passage of the gun body, the whole air forms confluence in front of the spray heads 73 through the spray head outer cover 72, so that the material is atomized and sprayed out.
After the work is finished, the material joint 6 is closed firstly, and the rest materials are sprayed out, so that the inside of the gun body is kept clean. Because the needle bar 82 is designed to be of a hollow structure, the air which is connected with the needle bar control joint 3 and the air passage joint 4 can purge the whole cavity of the piston 81 and the corresponding air passage pipeline, and the cleaning effect is achieved.
Embodiment two:
The embodiment is converted based on the first embodiment, correspondingly, in order to make the whole glue gun assembly more concise, an adjusting assembly pipeline 24 communicated with a hollow channel 821 is arranged inside the needle bar adjusting assembly 2 in a penetrating way, the adjusting assembly pipeline 24 is externally connected with an air compressor to drive air into the hollow channel 821, at the moment, the air enters along the hollow channel 821, part of the air is blown out from an air inlet 822 and is blown into a piston cavity 14 in the gun body 1, and the piston 81 is controlled to move backwards, so that the needle bar 82 is driven to move backwards, and air is blown out from a spray head 73, so that clean treatment on the hollow channel 821 and the front spray head 73 is realized.
The above embodiments are only for illustrating the present invention, not for limiting the present invention, and various changes and modifications may be made by one of ordinary skill in the relevant art without departing from the spirit and scope of the present invention, and therefore, all equivalent technical solutions are also within the scope of the present invention, and the scope of the present invention is defined by the claims.
Claims (4)
1. The pneumatic cold glue spray gun is characterized by comprising a gun body and an electromagnetic valve assembly connected to the rear end of the bottom of the gun body, wherein the gun body is U-shaped, a needle rod piston assembly is arranged in the gun body in a penetrating manner, the needle rod piston assembly comprises a piston and a needle rod, the inside of the needle rod is hollow, the tail of the needle rod is connected to the piston, a needle rod pipeline and a piston cavity for accommodating the needle rod and the piston are respectively formed in the gun body, a needle rod guide pipe is further arranged at a gap in the middle of the gun body, and the needle rod guide pipe is sleeved on the needle rod; the front end of the needle bar piston assembly is wrapped by the spray head assembly, the rear end of the needle bar piston assembly is connected with the needle bar adjusting assembly, and the needle bar adjusting assembly is arranged at the upper end of the tail part of the gun body through the adjusting cylinder body; the front end of the bottom of the gun body is provided with a material joint which is communicated with a feed pipe in the gun body; the lower end of the tail part of the gun body is also provided with a needle bar control joint and an air passage joint which are arranged side by side, the needle bar control joint is used for controlling the needle bar piston assembly to move in the gun body by air supply, and the air passage joint is used for scattering materials by air supply; the tail part of the electromagnetic valve assembly is also provided with an electromagnetic valve socket;
The needle bar comprises a hollow channel and an air inlet hole, and the air inlet hole is communicated with a piston cavity formed in the gun body; the piston comprises a sealing ring A, a set screw and a sealing ring B, wherein the sealing ring A and the sealing ring B are respectively sleeved at the front end and the rear end of the piston, the set screw is arranged in the middle of the piston, and the set screw is used for locking a needle rod in the piston;
The gas circuit joint is communicated with a gas circuit pipeline inside the gun body, and the tail end of the gas circuit pipeline is converged with the feeding pipeline;
The needle bar control joint is communicated with a gun needle gas pipeline which is also communicated with the piston cavity.
2. The pneumatic cold glue spray gun according to claim 1, wherein the spray head assembly comprises a spray head locking nut, a spray head outer cover and a spray head, the spray head outer cover is arranged on the periphery of the spray head, a protruding portion is arranged at the front end of the gun body, an inlet of a needle bar pipeline is arranged in the middle of the surface of the protruding portion, at least four spray head air holes are formed in the periphery of the outer side of the inlet, the spray head air holes are communicated with the feed pipeline, and the spray head locking nut is used for fixing the spray head outer cover and the spray head on the protruding portion.
3. A pneumatic cold glue spray gun according to claim 1, wherein the needle bar adjusting assembly comprises an adjusting handle, an adjusting cylinder and a needle bar adjusting spring, the adjusting handle being rotatably connected to the tail of the adjusting cylinder, the spring being connected to the front end of the adjusting cylinder for providing spring stress for movement of the needle bar piston assembly.
4. A pneumatic cold glue spray gun according to claim 1, wherein the needle bar adjusting assembly is internally provided with an adjusting assembly pipe which is communicated with the hollow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010873748.8A CN111841922B (en) | 2020-08-26 | 2020-08-26 | Pneumatic cold glue spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010873748.8A CN111841922B (en) | 2020-08-26 | 2020-08-26 | Pneumatic cold glue spray gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111841922A CN111841922A (en) | 2020-10-30 |
| CN111841922B true CN111841922B (en) | 2024-05-03 |
Family
ID=72967877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010873748.8A Active CN111841922B (en) | 2020-08-26 | 2020-08-26 | Pneumatic cold glue spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111841922B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114957586A (en) * | 2022-05-05 | 2022-08-30 | 江苏沣鼎新材料有限公司 | Car as a house board and processingequipment based on compound honeycomb core of glass fiber reinforcement |
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|---|---|---|---|---|
| CN1962079A (en) * | 2006-11-29 | 2007-05-16 | 上海国冶工程技术有限公司 | A spray gun |
| AU2008294832A1 (en) * | 2007-09-04 | 2009-03-12 | Air Products And Chemicals, Inc. | Spray nozzle manifold and process for quenching a hot gas using such an arrangement |
| CN101703974A (en) * | 2009-10-19 | 2010-05-12 | 李志军 | Electrostatic powder spray gun with built-in dust blowing system |
| CN102671800A (en) * | 2012-05-14 | 2012-09-19 | 王根冲 | Two-purpose gun with adjustable spraying head for blowing away dust and cleaning |
| CN102802806A (en) * | 2009-04-28 | 2012-11-28 | 伊利诺斯工具制品有限公司 | Fluid through needle for applying multiple component material |
| DE102014100605A1 (en) * | 2014-01-21 | 2015-07-23 | Paperchine Gmbh | Nozzle arrangement with self-cleaning front surface |
| CN107309109A (en) * | 2016-07-08 | 2017-11-03 | 浙江奥利达气动工具股份有限公司 | Double true mineral varnish blackwash sprayers of shower nozzle |
| CN110355030A (en) * | 2019-08-14 | 2019-10-22 | 京华派克邯郸机械科技有限公司 | A kind of novel spraying rifle |
| CN212441687U (en) * | 2020-08-26 | 2021-02-02 | 玉溪市新特科技有限公司 | Pneumatic cold glue spray gun |
-
2020
- 2020-08-26 CN CN202010873748.8A patent/CN111841922B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962079A (en) * | 2006-11-29 | 2007-05-16 | 上海国冶工程技术有限公司 | A spray gun |
| AU2008294832A1 (en) * | 2007-09-04 | 2009-03-12 | Air Products And Chemicals, Inc. | Spray nozzle manifold and process for quenching a hot gas using such an arrangement |
| CN102802806A (en) * | 2009-04-28 | 2012-11-28 | 伊利诺斯工具制品有限公司 | Fluid through needle for applying multiple component material |
| CN101703974A (en) * | 2009-10-19 | 2010-05-12 | 李志军 | Electrostatic powder spray gun with built-in dust blowing system |
| CN102671800A (en) * | 2012-05-14 | 2012-09-19 | 王根冲 | Two-purpose gun with adjustable spraying head for blowing away dust and cleaning |
| DE102014100605A1 (en) * | 2014-01-21 | 2015-07-23 | Paperchine Gmbh | Nozzle arrangement with self-cleaning front surface |
| CN107309109A (en) * | 2016-07-08 | 2017-11-03 | 浙江奥利达气动工具股份有限公司 | Double true mineral varnish blackwash sprayers of shower nozzle |
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| 曹宇.中国博士学位论文全文数据库.(第11期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111841922A (en) | 2020-10-30 |
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