CN112707237A - Winding mechanism applied to flexible foam rubber material of air conditioner air pipe - Google Patents

Winding mechanism applied to flexible foam rubber material of air conditioner air pipe Download PDF

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Publication number
CN112707237A
CN112707237A CN202011576686.0A CN202011576686A CN112707237A CN 112707237 A CN112707237 A CN 112707237A CN 202011576686 A CN202011576686 A CN 202011576686A CN 112707237 A CN112707237 A CN 112707237A
Authority
CN
China
Prior art keywords
rubber material
foam rubber
flexible foam
winding mechanism
air conditioner
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.)
Pending
Application number
CN202011576686.0A
Other languages
Chinese (zh)
Inventor
甘树森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Hengxiang Technology Co ltd
Original Assignee
Hubei Hengxiang Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hubei Hengxiang Technology Co ltd filed Critical Hubei Hengxiang Technology Co ltd
Priority to CN202011576686.0A priority Critical patent/CN112707237A/en
Publication of CN112707237A publication Critical patent/CN112707237A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00Winding, coiling, or depositing filamentary material
    • B65H54/02Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/40Arrangements for rotating packages
    • B65H54/44Arrangements for rotating packages in which the package, core, or former is engaged with, or secured to, a driven member rotatable about the axis of the package
    • B08B1/12
    • B08B1/20
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00Winding, coiling, or depositing filamentary material
    • B65H54/02Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/40Arrangements for rotating packages
    • B65H54/54Arrangements for supporting cores or formers at winding stations; Securing cores or formers to driving members
    • B65H54/553Both-ends supporting arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/34Handled filamentary material electric cords or electric power cables

Abstract

The invention discloses a winding mechanism of a flexible foam rubber material applied to an air-conditioning air pipe, and relates to the technical field of winding. The base, the both sides of base inner wall bottom are all fixed and are provided with the bracing piece, the surface activity of bracing piece is provided with damping spring and U-shaped frame, the fixed plate that is provided with in top of U-shaped frame, the fixed backup pad that is provided with in top of fixed plate, the fixed motor that is provided with in one side of backup pad, the output shaft fixedly connected with pivot of motor, the cover is placed to the fixed being provided with in one end of pivot, the inner wall activity of placing the cover is provided with the dwang, and through setting up the U-shaped pole, the U-shaped pole drives opposite synchronous motion between first rack plate and the second rack plate to the brush board that makes a round trip reciprocal surface to the material is cleared up, can clear away its surperficial debris when the material rolling, and clears away effectually, helps keeping the clean outward.

Description

Winding mechanism applied to flexible foam rubber material of air conditioner air pipe
Technical Field
The invention relates to the technical field of winding, in particular to a winding mechanism of a flexible foam rubber material applied to an air-conditioning air pipe.
Background
An air conditioner, that is, an air conditioner, is a device for manually adjusting and controlling parameters such as temperature, humidity, flow rate and the like of ambient air in a building or a structure, an air pipe is a pipeline system for air transportation and distribution, and foam rubber is rubber, which is also called sponge rubber and vulcanized rubber with a sponge-like porous structure.
When carrying out the rolling to flexible foam rubber material, partial flexible foam rubber material coiling mechanism structure is complicated, unstable when the operation, it is not high to lead to flexible foam rubber material coiling mechanism security, work efficiency has been influenced, the current device is comparatively loaded down with trivial details to the dismantlement step of rolling wheel, it is great to dismantle the degree of difficulty, the dismantlement time consumes longer, be not convenient for dismantle the rolling wheel, reduce work efficiency, it is inconvenient to use, and the material surface more or less all can be stained with and glue some debris, if not getting rid of it, can cause the influence to the outward appearance of material.
Disclosure of Invention
The invention provides a winding mechanism of a flexible foam rubber material applied to an air-conditioning air pipe, which has the advantages of shock absorption, sundry cleaning and convenience in mounting and dismounting, and solves the problems of unstable operation, sticky sundry and high mounting and dismounting difficulty.
In order to achieve the purposes of shock absorption, sundries cleaning and convenient assembly and disassembly, the invention provides the following technical scheme: a winding mechanism of flexible foam rubber materials applied to air-conditioning air pipes comprises a base, wherein supporting rods are fixedly arranged on two sides of the bottom of the inner wall of the base, a damping spring and a U-shaped frame are movably arranged on the surface of each supporting rod, a fixing plate is fixedly arranged on the top of the U-shaped frame, a supporting plate is fixedly arranged on the top of the fixing plate, a motor is fixedly arranged on one side of the supporting plate, an output shaft of the motor is fixedly connected with a rotating shaft, a placing sleeve is fixedly arranged at one end of the rotating shaft, a rotating rod is movably arranged on the inner wall of the placing sleeve, a bolt is movably arranged on the inner wall of the rotating rod, a work box is fixedly arranged on one side of the supporting plate, a second motor is fixedly arranged on the top of the work box, a U-shaped rod is fixedly, one end activity of connecting rod is provided with first rack plate, the bottom activity of first rack plate is provided with the gear.
As a preferable technical scheme of the invention, a second rack plate is movably arranged at the bottom of the outer wall of the gear, and a cleaning device is fixedly arranged at the bottom of the second rack plate.
As a preferable technical scheme of the invention, the cleaning device is sequentially provided with a spring, a push rod and a brush plate from inside to outside.
As a preferable technical scheme of the invention, two ends of the connecting rod are respectively hinged with the U-shaped rod and the first rack plate through pin shafts.
As a preferable technical scheme of the invention, a spring is fixedly arranged in the cleaning device, and a push rod is fixedly arranged at one end of the spring.
As a preferable technical scheme of the invention, one end of the push rod is fixedly provided with a brush plate.
As a preferable technical scheme of the invention, the inner wall of the rotating rod is provided with a thread groove matched with the bolt.
As a preferred technical scheme of the invention, the surface of the supporting rod is sleeved with a damping spring.
In a preferred embodiment of the present invention, the gear is engaged with the bottom of the first rack plate and the top of the second rack plate.
Compared with the prior art, the invention provides a winding mechanism of a flexible foam rubber material applied to an air-conditioning air pipe, which has the following beneficial effects:
1. this be applied to flexible foam rubber material's of air conditioner tuber pipe winding mechanism through setting up the U-shaped pole, and opposite synchronous motion between U-shaped pole drive first rack board and the second rack board to the brush board that makes is controlled and is made a round trip to reciprocate clears up the surface of material, can clear away its surperficial debris when the material rolling, and clears away effectually, helps keeping the clean outward appearance of material.
2. This be applied to flexible foam rubber material's of air conditioner tuber pipe winding mechanism through setting up the spring, just can make the brush board laminate with the surface of material more for the effect of clearance debris is better, and can stretch out and draw back the brush board automatically.
3. This be applied to flexible foam rubber material's of air conditioner tuber pipe winding mechanism through setting up the bolt, conveniently dismantles the winding wheel, also reduces the time that reduces and consume simultaneously, helps increasing work efficiency.
4. This be applied to flexible foam rubber material's of air conditioner tuber pipe winding mechanism through setting up damping spring, can increase the shock attenuation effect of coiling mechanism to can be so that the coiling mechanism is more stable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged schematic view of the working chamber of the present invention;
FIG. 4 is an enlarged view of part A of the present invention;
fig. 5 is an enlarged structural view of the damper spring according to the present invention.
In the figure: 1. a base; 101. a support bar; 102. a damping spring; 103. a U-shaped frame; 2. a fixing plate; 201. a support plate; 202. a motor; 203. a rotating shaft; 204. placing a sleeve; 205. rotating the rod; 206. a bolt; 4. a work box; 401. a second motor; 402. a U-shaped rod; 403. a connecting rod; 404. a first rack plate; 405. a gear; 406. a second rack plate; 407. a cleaning device; 408. a spring; 409. a push rod; 410. a brush plate.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-5, the invention discloses a winding mechanism of flexible foam rubber material applied to an air-conditioning air duct, comprising a base 1, wherein support rods 101 are fixedly arranged on both sides of the bottom of the inner wall of the base 1, a damping spring 102 and a U-shaped frame 103 are movably arranged on the surface of each support rod 101, a fixed plate 2 is fixedly arranged on the top of each U-shaped frame 103, a support plate 201 is fixedly arranged on the top of each fixed plate 2, a motor 202 is fixedly arranged on one side of each support plate 201, the model of the motor 202 is Y315S-8, a rotating shaft 203 is fixedly connected with an output shaft of the motor 202, a placing sleeve 204 is fixedly arranged at one end of the rotating shaft 203, a rotating rod 205 is movably arranged on the inner wall of the placing sleeve 204, a bolt 206 is movably arranged on the inner wall of the rotating rod 205, a work box 4 is fixedly arranged on one side of the support, the model of second motor 401 is Y80M1-2, the output shaft fixedly connected with U-shaped pole 402 of second motor 401, the surface activity of U-shaped pole 402 is provided with connecting rod 403, the one end activity of connecting rod 403 is provided with first rack plate 404, the bottom activity of first rack plate 404 is provided with gear 405, the bottom activity of gear 405 outer wall is provided with second rack plate 406, the fixed cleaning device 407 that is provided with in bottom of second rack plate 406, cleaning device 407 has set gradually spring 408, push rod 409 and brush board 410 from inside to outside.
Specifically, both ends of the connecting rod 403 are hinged to the U-shaped rod 402 and the first rack plate 404 through pins, respectively.
In this embodiment, through setting up U-shaped pole 402, opposite synchronous motion between U-shaped pole 402 drives first rack board 404 and the second rack board 406 to brush board 410 that makes is left and right reciprocating clears up the surface of material, can clear away the debris on its surface when the material rolling, and clears away effectually, helps keeping the clean outward appearance of material.
Specifically, a spring 408 is fixedly arranged inside the cleaning device 407, one end of the spring 408 is fixedly provided with a push rod 409, and one end of the push rod 409 is fixedly provided with a brush plate 410.
In this embodiment, through setting up spring 408, just can make brush board 410 laminate with the surface of material more for the effect of clearance debris is better, and can stretch out and draw back brush board 410 automatically.
Specifically, the inner wall of the rotating rod 205 is provided with a thread groove adapted to the bolt 206.
In this embodiment, through setting up bolt 206, conveniently dismantle the reel, also reduce the time that reduces and consume simultaneously, help increasing work efficiency.
Specifically, a damping spring 102 is sleeved on the surface of the support rod 101.
In this embodiment, by providing the damping spring 102, the damping effect of the winding device can be increased, and the winding device can be more stable.
Specifically, the gear 405 is engaged with the bottom of the first rack plate 404 and the top of the second rack plate 406.
In this embodiment, the gear 405 is provided, and the meshing connection of the gear 405 drives the second rack plate 406 to move in the direction opposite to that of the first rack plate 404, and drives the brush plate 410 to clean the surface of the material.
The working principle and the using process of the invention are as follows: when the device is used, the winding drum is placed into the placing sleeves 204 on two sides, the bolt 206 is screwed into the thread groove on the inner wall of the rotating rod 205, the installation of the winding drum is completed, the motor 202 is opened, the motor 202 drives the winding drum to roll through the rotating shaft 203, materials are wound, the second motor 401 is opened, the second motor 401 drives the first rack plate 404 to move left and right through the protruding position of the U-shaped rod 402, the second rack plate 406 is driven to move in the direction opposite to that of the first rack plate 404 through meshing connection with the gear 405, the brush plate 410 is driven to clean the surface of the materials, the U-shaped frame 103 can slide on the surface of the supporting rod 101 when the shock is absorbed, and the damping spring 102 is extruded.
In summary, according to the winding mechanism of flexible foam rubber material applied to the air-conditioning air duct, the U-shaped rod 402 is arranged, the U-shaped rod 402 drives the first rack plate 404 and the second rack plate 406 to move oppositely and synchronously, and the brush plate 410 is made to reciprocate back and forth left and right to clean the surface of the material, so that sundries on the surface can be cleaned when the material is wound, the cleaning effect is good, the clean appearance of the material is kept, the brush plate 410 can be made to be more attached to the surface of the material by arranging the spring 408, the sundries cleaning effect is better, the brush plate 410 can be automatically stretched, the winding wheel can be conveniently detached by arranging the bolt 206, the consumed time is reduced, the working efficiency is increased, the damping effect of the winding device can be increased by arranging the damping spring 102, and the winding device can be more stable, by providing the gear 405, the meshing engagement of the gear 405 causes the second rack plate 406 to move in a direction opposite to the first rack plate 404 and causes the brush plate 410 to clean the surface of the material.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a be applied to flexible foam rubber material's of air conditioner tuber pipe winding mechanism, includes base (1) its characterized in that: the utility model discloses a vibration damping device of a motor vehicle, including base (1), bracing piece (101) is all fixed to be provided with in the both sides of base (1) inner wall bottom, the surface activity of bracing piece (101) is provided with damping spring (102) and U-shaped frame (103), the fixed plate (2) that is provided with in top of U-shaped frame (103), the fixed backup pad (201) that is provided with in top of fixed plate (2), one side fixed motor (202) that is provided with of backup pad (201), the output shaft fixedly connected with pivot (203) of motor (202), the one end fixed placement cover (204) that is provided with of pivot (203), the inner wall activity of placement cover (204) is provided with dwang (205), the inner wall activity of dwang (205) is provided with bolt (206), one side fixed work box (4) that is provided with of backup pad (201), the top of, ) An output shaft of the second motor (401) is fixedly connected with a U-shaped rod (402), a connecting rod (403) is movably arranged on the surface of the U-shaped rod (402), a first rack plate (404) is movably arranged at one end of the connecting rod (403), and a gear (405) is movably arranged at the bottom of the first rack plate (404).
2. The winding mechanism of the flexible foam rubber material applied to the air duct of the air conditioner as claimed in claim 1, wherein: a second rack plate (406) is movably arranged at the bottom of the outer wall of the gear (405), and a cleaning device (407) is fixedly arranged at the bottom of the second rack plate (406).
3. The winding mechanism of the flexible foam rubber material applied to the air duct of the air conditioner as claimed in claim 2, wherein: the cleaning device (407) is sequentially provided with a spring (408), a push rod (409) and a brush plate (410) from inside to outside.
4. The winding mechanism of the flexible foam rubber material applied to the air duct of the air conditioner as claimed in claim 1, wherein: two ends of the connecting rod (403) are respectively hinged with the U-shaped rod (402) and the first rack plate (404) through pin shafts.
5. The winding mechanism of the flexible foam rubber material applied to the air duct of the air conditioner as claimed in claim 1, wherein: a spring (408) is fixedly arranged inside the cleaning device (407), and a push rod (409) is fixedly arranged at one end of the spring (408).
6. The winding mechanism of the flexible foam rubber material applied to the air duct of the air conditioner as claimed in claim 5, wherein: one end of the push rod (409) is fixedly provided with a brush plate (410).
7. The winding mechanism of the flexible foam rubber material applied to the air duct of the air conditioner as claimed in claim 1, wherein: the inner wall of the rotating rod (205) is provided with a thread groove matched with the bolt (206).
8. The winding mechanism of the flexible foam rubber material applied to the air duct of the air conditioner as claimed in claim 1, wherein: the surface of the supporting rod (101) is sleeved with a damping spring (102).
9. The winding mechanism of the flexible foam rubber material applied to the air duct of the air conditioner as claimed in claim 1, wherein: the gear (405) is in meshed connection with the bottom of the first rack plate (404) and the top of the second rack plate (406).
CN202011576686.0A 2020-12-28 2020-12-28 Winding mechanism applied to flexible foam rubber material of air conditioner air pipe Pending CN112707237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011576686.0A CN112707237A (en) 2020-12-28 2020-12-28 Winding mechanism applied to flexible foam rubber material of air conditioner air pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011576686.0A CN112707237A (en) 2020-12-28 2020-12-28 Winding mechanism applied to flexible foam rubber material of air conditioner air pipe

Publications (1)

Publication Number Publication Date
CN112707237A true CN112707237A (en) 2021-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011576686.0A Pending CN112707237A (en) 2020-12-28 2020-12-28 Winding mechanism applied to flexible foam rubber material of air conditioner air pipe

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054104A2 (en) * 2003-12-05 2005-06-16 Fabio Perini S.P.A. Method and machine for the production of logs of web material
CN108439055A (en) * 2018-03-26 2018-08-24 陈建明 A kind of communication cable guiding wrap-up
CN108529275A (en) * 2018-06-06 2018-09-14 刘州豪 A kind of novel weaving weaving cloth wrap-up
US20190262871A1 (en) * 2018-02-23 2019-08-29 International Test Solutions, Inc. Novel material and hardware to automatically clean flexible electronic web rolls
CN209367496U (en) * 2018-12-17 2019-09-10 东莞银河智造实业有限公司 A kind of curtain coating line wrap-up
CN210260505U (en) * 2019-07-09 2020-04-07 江苏美罗家用纺织品有限公司 Fabric winder through anion treatment
CN212143575U (en) * 2020-05-14 2020-12-15 南京林业大学 Mulching film recovery device for soil pollution treatment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054104A2 (en) * 2003-12-05 2005-06-16 Fabio Perini S.P.A. Method and machine for the production of logs of web material
US20190262871A1 (en) * 2018-02-23 2019-08-29 International Test Solutions, Inc. Novel material and hardware to automatically clean flexible electronic web rolls
CN108439055A (en) * 2018-03-26 2018-08-24 陈建明 A kind of communication cable guiding wrap-up
CN108529275A (en) * 2018-06-06 2018-09-14 刘州豪 A kind of novel weaving weaving cloth wrap-up
CN209367496U (en) * 2018-12-17 2019-09-10 东莞银河智造实业有限公司 A kind of curtain coating line wrap-up
CN210260505U (en) * 2019-07-09 2020-04-07 江苏美罗家用纺织品有限公司 Fabric winder through anion treatment
CN212143575U (en) * 2020-05-14 2020-12-15 南京林业大学 Mulching film recovery device for soil pollution treatment

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Application publication date: 20210427

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