CN218091843U - Roller coating mechanism and roller coating equipment - Google Patents
Roller coating mechanism and roller coating equipment Download PDFInfo
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- CN218091843U CN218091843U CN202121583744.2U CN202121583744U CN218091843U CN 218091843 U CN218091843 U CN 218091843U CN 202121583744 U CN202121583744 U CN 202121583744U CN 218091843 U CN218091843 U CN 218091843U
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- coating mechanism
- roller
- roller brush
- roll coating
- discharge chute
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Abstract
The utility model relates to a roller coat mechanism and roller coat equipment. The roller coating mechanism comprises a bracket, a roller brush, a material storage device and a first adjusting elastic piece. The roller brush is rotatably mounted on the bracket and provided with a roller brush part. The stocker is provided with a storage cavity and a discharge chute, and the discharge chute is communicated with the storage cavity. The first adjusting elastic piece is used for enabling the roller brush part to be in contact with the discharge chute of the stocker. During operation, the roller brush part keeps contact with the wall surface of the operation, and the roller coating mechanism moves from bottom to top. Under the action of friction force of the operation wall surface, the roller brush rotates, so that the paint in the material storage cavity can be taken out from the discharge groove and transferred to the operation wall surface, and the painting operation is completed. And the first adjusting elastic piece can play a role in automatic adjustment, and even if the roller brush deforms in the process of operation, the roller brush part can still be attached and contacted with the discharge chute of the stocker, so that the roller coating mechanism can keep a stable roller coating effect in the long-time operation process, and the uniform and defect-free coated paint surface is ensured.
Description
Technical Field
The utility model relates to a construction machinery technical field especially relates to a roller coat mechanism and roller coat equipment.
Background
The traditional wall paint is basically brushed by a manual roller, and workers hand a roller brushing tool to brush the wall roller one by one. The efficiency of manual work is low, and the workers are in close contact with the paint for a long time, so that the health is easily influenced.
In order to solve the problems, a robot is mostly adopted to brush wall paint by a roller. In the process of long-term roll brushing operation, the robot cannot realize a stable roll coating effect, so that the uniformity of a coated paint surface of the roll coating is poor.
SUMMERY OF THE UTILITY MODEL
Therefore, a roller coating mechanism and a roller coating device are needed, which can keep stable roller coating effect in a long-time operation process and ensure that the coated paint surface is uniform and has no defects.
A roll coating mechanism comprising:
a support;
the roller brush is rotatably arranged on the bracket and is provided with a roller brush part;
the stocker is provided with a storage cavity and at least one discharge chute, and the at least one discharge chute is communicated with the storage cavity; and
and a first adjusting elastic member for making the roller brush part contact with the discharge chute of the stocker.
In the roller coating mechanism, the roller brush part is kept in contact with the wall surface during operation, and the roller coating mechanism moves from bottom to top. Under the action of friction force of the operation wall surface, the roller brush rotates. Because the roller coating mechanism is provided with the first adjusting elastic piece, the roller brush part is in fit contact with the discharge chute of the material storage device under the action of the first adjusting elastic piece, so that the paint in the material storage cavity can be taken out of the discharge chute and transferred to an operation wall surface to finish the painting operation in the rotating process of the roller brush. And the first adjusting elastic piece can play a role in automatic adjustment, and even if the roller brush deforms in the operation process, the roller brush part can still be attached and contacted with the discharge chute of the stocker, so that the roller coating mechanism can keep a stable roller coating effect in the long-time operation process, and the uniform and defect-free coated paint surface is ensured.
In one embodiment, the number of the first adjusting elastic members is at least two, and at least two first adjusting elastic members are respectively arranged on two axial sides of the discharge chute.
In one embodiment, the roller coating mechanism further comprises a guide shaft arranged along the first direction, the guide shaft is fixed on the bracket, the material storage device is arranged above the roller brush and movably mounted on the guide shaft, the guide shaft is provided with at least one first adjusting elastic piece, and the first adjusting elastic piece is pressed against the top of the material storage device so that the discharge chute at the bottom of the material storage device is in contact with the roller brush.
In one embodiment, the guide shafts are provided with at least two guide shafts, the at least two guide shafts are respectively arranged at two axial ends of the roller brush, the stocker is movably arranged on the at least two guide shafts, and each guide shaft is provided with at least one first adjusting elastic piece.
In one embodiment, the discharge chute extends along the axial direction of the roller brush and is matched with the axial length of the roller brush.
In one embodiment, the material storage device is further provided with a feed inlet, the feed inlet is communicated with the material storage cavity, and the feed inlet is used for being connected with a feeding device so that the material storage cavity can keep a full material state when the roller coating mechanism works.
In one embodiment, the roller coating mechanism further includes a fixing plate and a second adjusting elastic member disposed along a second direction, one end of the second adjusting elastic member abuts against the fixing plate, and the other end abuts against the bracket.
In one embodiment, at least two second adjusting elastic pieces are arranged, and the at least two second adjusting elastic pieces are respectively arranged corresponding to two axial ends of the roller brush.
In one embodiment, the roller coating mechanism further comprises a limit switch connected with a movable chassis or a mechanical arm, and the limit switch is mounted on the fixed plate and used for detecting the distance between the limit switch and the wall surface.
The utility model provides a roll coating equipment, including removing chassis, elevating system, arm and roll coating mechanism, roll coating mechanism install in the output of arm, the arm passes through elevating system is fixed in remove the chassis, elevating system can drive roll coating mechanism goes up and down to the roller brush operation wall.
When the roller coating equipment works, the roller brush part is kept in contact with a working wall surface, and the lifting mechanism drives the roller coating mechanism to move from bottom to top. Under the action of friction force of the operation wall surface, the roller brush rotates. Because the roller coating mechanism is provided with the first adjusting elastic piece, the roller brush part is in fit contact with the discharge chute of the material storage device under the action of the first adjusting elastic piece, so that the paint in the material storage cavity can be taken out of the discharge chute and transferred to an operation wall surface to finish the painting operation in the rotating process of the roller brush. And the first adjusting elastic piece can play a role in automatic adjustment, and even if the roller brush deforms in the operation process, the roller brush part can still be attached and contacted with the discharge chute of the stocker, so that the roller coating mechanism can keep a stable roller coating effect in the long-time operation process, and the uniform and defect-free coated paint surface is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a roller coating mechanism according to an embodiment of the present invention;
FIG. 2 is a top view of the roll coating mechanism shown in FIG. 1;
FIG. 3 isbase:Sub>A cross-sectional view A-A of the roll coating mechanism shown in FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
fig. 5 is a schematic structural diagram of a roller coating apparatus according to an embodiment of the present invention.
Reference numerals: 10. a roller coating mechanism; 11. a support; 12. roller brushing; 121. a roller brush section; 13. a stocker; 131. a material storage cavity; 132. a discharge chute; 133. a feed inlet; 14. a first adjusting elastic member; 15. a fixing plate; 16. a second adjusting elastic member; 17. a limit switch; 18. a guide shaft; 20. moving the chassis; 30. a lifting mechanism; 40. a mechanical arm; 50. and (5) working the wall surface.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
Referring to fig. 1, 2 and 3, a roll coating mechanism according to an embodiment of the present invention includes a bracket 11, a roll brush 12, a material storage 13 and a first adjusting elastic member 14. The hopper 13 is provided with a storage chamber 131 and at least one discharge chute 132, and the at least one discharge chute 132 is communicated with the storage chamber 131. The roller brush 12 is rotatably mounted on the bracket 11, and the roller brush 12 is provided with a roller brush portion 121. The first adjustment elastic member 14 is used to bring the roller brush portion 121 into contact with the discharge chute 132 of the hopper 13.
In the above-described roller coating mechanism, the roller brush portion 121 is kept in contact with the work wall surface 50 during operation, and the roller coating mechanism 10 moves from the bottom to the top. The roller brush 12 is rotated by the friction of the work wall surface 50. Because the roller coating mechanism 10 is provided with the first adjusting elastic piece 14, under the action of the first adjusting elastic piece 14, the roller brush part 121 is in contact with the discharge chute 132 of the stocker 13, so that the paint in the storage cavity 131 can be taken out from the discharge chute 132 and transferred to the working wall surface 50 during the rotation of the roller brush 12, and the painting operation is completed. In addition, the first adjusting elastic element 14 can also perform the function of automatic adjustment, even if the roller brush 12 deforms during the operation, the roller brush part 121 can still be in contact with the discharge chute 132 of the stocker 13, so that the roller coating mechanism 10 can maintain a stable roller coating effect during the long-time operation, and the uniform and defect-free coated paint surface is ensured.
In one embodiment, referring to fig. 1, at least two first adjusting elastic members 14 are provided, and at least two first adjusting elastic members 14 are respectively provided at two axial sides of the discharging chute 132. In this way, under the action of the at least two first adjusting elastic members 14, the roller brush part 121 can be better attached and contacted with the discharge chute 132, and the roller coating quality is ensured. In addition, the roller brush mechanism 10 can be ensured to maintain stable roller coating effect in the long-time operation process.
In this embodiment, two first adjusting elastic members 14 are provided, and the two first adjusting elastic members 14 are respectively provided corresponding to two axial ends of the roller brush 12.
In one embodiment, referring to fig. 1, the roll coating mechanism 10 further includes a guide shaft 18 disposed along the first direction, and the guide shaft 18 is fixed to the bracket 11. The hopper 13 is provided above the roller brush 12 and is movably attached to the guide shaft 18. The guiding shaft 18 is provided with at least one first adjusting elastic member 14, and the first adjusting elastic member 14 is pressed against the top of the stocker 13, so that the discharge chute 132 at the bottom of the stocker 13 is in contact with the roller brush part 121. In the operation process, the paint flows out from the discharging groove 132 under the action of the gravity of the roller brush 12, the roller brush 12 rotates under the action of the friction force of the operation wall surface 50, the paint at the discharging groove 132 at the bottom of the storage container 13 is taken out, and the paint is transferred to the operation wall surface 50, so that the painting operation is completed. In this way, by providing the guide shaft 18, the movement of the stocker 13 and the first adjusting elastic member 14 has guidance, thereby avoiding unstable phenomena such as shaking and ensuring the roller coating effect. In addition, by arranging the storage tank 13 above the roller brush 12 and arranging the discharge chute 132 at the bottom of the storage tank 13, the paint can flow out from the discharge chute 132 under the self-gravity, so that the roller brush 12 can uniformly carry out the same amount of paint, and the roller coating uniformity is ensured.
It should be noted that, referring to fig. 1, the first direction is a direction perpendicular to the top of the roller brush 12. For ease of understanding, the first direction is denoted by L1.
Of course, in other embodiments, hopper 13 may be positioned at the bottom of roller brush 12 and discharge chute 132 may be positioned at the top of hopper 13. The roller brush 121 is brought into contact with the discharge chute 132 at the top of the hopper 13 by the first adjusting elastic member 14.
Further, referring to fig. 1, at least two guide shafts 18 are provided, and at least two guide shafts 18 are provided at both axial ends of the roller brush 12, respectively. Hopper 13 is movably mounted to at least two guide shafts 18, each guide shaft 18 being provided with at least one first adjustment spring 14 for urging roller brush 121 into abutting contact with a discharge chute 132 in the bottom of hopper 13. Therefore, the roller brushing part 121 can be better attached and contacted with the discharging groove 132, and the roller coating quality is effectively ensured.
In the present embodiment, referring to fig. 1, two guide shafts 18 are provided, and the two guide shafts 18 are provided at both axial ends of the roller brush 12, respectively. Both ends of the hopper 13 in the axial direction are movably mounted to two guide shafts 18, respectively, and each guide shaft 18 is provided with a first adjusting elastic member 14 for bringing the roller brush 121 into abutting contact with a discharge chute 132 at the bottom of the hopper 13.
In one embodiment, referring to fig. 2 and 3, the discharge chute 132 is disposed along the axial extent of the roller brush 12 and is adapted to the axial length of the roller brush 12. Specifically, the discharge chute 132 extends axially from one end of the hopper to the other. Therefore, the roller brush 12 can be axially provided with paint, the maximization of the range of the roller brush 12 in the axial direction of the roller coating mechanism 10 is ensured, and the roller coating efficiency is improved.
It should be noted that the number of the discharging chutes 132 may be set according to actual requirements, and is not limited in detail herein. In the present embodiment, one discharge chute 132 is provided, and one discharge chute 132 is provided extending in the axial direction of the roller brush 12.
Further, referring to fig. 1 and 4, the hopper 13 is further provided with a feed port 133, and the feed port 133 is communicated with the storage chamber 131. The feeding port 133 is used for connecting a feeding device, so that the material storage chamber 131 is kept in a full state when the roll coating mechanism 10 works. Specifically, the feeding device includes a feeding pump and a feeding tube, and the paint is conveyed into the storage cavity 131 through the feeding hole 133 by the feeding pump through the feeding tube, so that the storage cavity 131 is kept in a full state for a long time. In this way, during the operation, the feeding pump continuously feeds the paint into the storage cavity 131, the paint is extruded from the discharge chute 132 after the material is full, and the roller brush 12 rotates and simultaneously transfers the paint to the operation wall surface 50 uniformly, thereby completing the roller coating of the paint. In addition, paint is conveyed into the material storage cavity 131 through the feeding device, so that the material storage cavity 131 is in a full material state, the paint in the discharge chute 132 can be ensured to be uniform in the axial direction of the roller brush 12, and uniform roller coating of the paint is realized.
Alternatively, referring to fig. 1, the feed inlet 133 is provided at the top of the hopper 13. So, conveniently carry paint in to storage cavity 131, avoid feedway's material pipe to produce to roll brush 12 and interfere to can also effectively guarantee that storage cavity 131 can be in full material state. Of course, in other embodiments, the inlet 133 may be provided at an upper side portion of the hopper 13. In this embodiment, the feed opening 133 is provided at the center of the top end of the hopper 13.
In one embodiment, referring to fig. 1 and 2, the roll coating mechanism 10 further includes a fixed plate 15 and a second adjusting elastic member 16 disposed along the second direction. One end of the second adjusting elastic member 16 abuts against the fixing plate 15, and the other end abuts against the bracket 11. Specifically, the fixing plate 15 is disposed at an interval on a side of the bracket 11 away from the roller brush 12, and the second adjusting elastic member 16 is disposed between the fixing plate 15 and the bracket 11 in the second direction. Thus, the roller brush 12 can freely stretch and move according to the condition of the operation wall surface 50 under the action of the second adjusting elastic piece 16, so that the roller brush 12 can be tightly attached to the operation wall surface 50 during operation, even if the operation wall surface 50 is irregular or even uneven, the roller coating mechanism 10 can still adapt to the irregular or uneven condition, paint is uniformly coated on the operation wall surface 50, and the roller coating quality is ensured.
Referring to fig. 1, the second direction is a direction perpendicular to the work wall surface 50 when the roll coating mechanism 10 is in operation. For ease of understanding, the second direction is denoted by L2.
Further, referring to fig. 1 and 2, at least two second adjusting elastic members 16 are provided, and at least two second adjusting elastic members 16 are respectively provided corresponding to two axial ends of the roller brush 12. Therefore, in the operation process, the second adjusting elastic pieces 16 at the two axial ends of the roller brush 12 support the whole roller brush 12 against the operation wall surface 50, so that the whole roller brush 12 is better attached to the operation wall surface 50, and the operation wall surface 50 is ensured to be uniformly painted.
In the present embodiment, referring to fig. 1 and 2, the fixing plate 15 is provided with upper and lower portions. Two second adjusting elastic pieces 16 are arranged on the upper portion, and the two second adjusting elastic pieces 16 are respectively arranged corresponding to the two axial ends of the roller brush 12. The lower portion is also provided with two second adjusting elastic members 16, and the two second adjusting elastic members 16 are respectively arranged corresponding to the two axial ends of the roller brush 12.
Further, referring to fig. 1, the roll coating mechanism 10 further includes a limit switch 17. The limit switch 17 is attached to the fixed plate 15 and detects a distance between the limit switch 17 and the work wall surface 50. Optionally, the limit switch 17 is connected to the moving chassis 20 or the robot arm 40. During the operation, the limit switch 17 detects the distance from the operation wall surface 50 in real time. If the distance between the roller brush and the operation wall surface 50 reaches a preset limit value, the movable chassis 20 or the mechanical arm 40 is driven to act to drive the roller coating mechanism 10 to move along the direction far away from the operation wall surface 50, so that the contact force between the roller brush 12 and the operation wall surface 50 is prevented from being too large, and the roller coating quality is ensured.
Referring to fig. 1 and 5, a roll coating apparatus according to an embodiment of the present invention includes a movable chassis 20, a lifting mechanism 30, a mechanical arm 40, and a roll coating mechanism 10 according to any one of the above embodiments. The roller coating mechanism 10 is mounted at the output end of the mechanical arm 40, the mechanical arm 40 is fixed on the movable chassis 20 through the lifting mechanism 30, and the lifting mechanism 30 can drive the roller coating mechanism 10 to lift so as to roll and brush the operation wall surface 50.
Specifically, the fixing plate 15 of the roll coating mechanism 10 is connected to the output end of the robot arm 40.
In the roll coating equipment, during operation, the roll brush part 121 keeps contact with the operation wall surface 50, and the lifting mechanism 30 drives the roll coating mechanism 10 to move from bottom to top. The roller brush 12 is rotated by the friction of the work wall surface 50. Because the roller coating mechanism 10 is provided with the first adjusting elastic piece 14, under the action of the first adjusting elastic piece 14, the roller brush part 121 is in contact with the discharge chute 132 of the stocker 13, so that the paint in the storage cavity 131 can be taken out from the discharge chute 132 and transferred to the working wall surface 50 during the rotation of the roller brush 12, and the painting operation is completed. In addition, the first adjusting elastic element 14 can also perform the function of automatic adjustment, even if the roller brush 12 deforms during the operation, the roller brush part 121 can still be in contact with the discharge chute 132 of the stocker 13, so that the roller coating mechanism 10 can maintain a stable roller coating effect during the long-time operation, and the uniform and defect-free coated paint surface is ensured.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A roll coating mechanism, comprising:
a support;
the roller brush is rotatably arranged on the bracket and is provided with a roller brush part;
the stocker is provided with a storage cavity and at least one discharge chute, and the at least one discharge chute is communicated with the storage cavity; and
and a first adjusting elastic member for making the roller brush part contact with the discharge chute of the stocker.
2. The roll coating mechanism according to claim 1, wherein said first adjustable resilient members are provided in at least two numbers, and at least two of said first adjustable resilient members are provided on both axial sides of said discharge chute.
3. The roll coating mechanism of claim 1 further including a guide shaft disposed in a first direction, said guide shaft being secured to said frame, said hopper being disposed above said roller brush and movably mounted to said guide shaft, said guide shaft having at least one said first adjusting spring, said first adjusting spring abutting against a top of said hopper to urge said roller brush portion into abutting contact with said discharge chute at a bottom of said hopper.
4. The roll coating mechanism according to claim 3, wherein said guide shafts are provided in at least two numbers, at least two of said guide shafts being provided at respective axial ends of said roll brush, said hopper being movably mounted to at least two of said guide shafts, each of said guide shafts being provided with at least one first adjusting elastic member.
5. The roll coating mechanism of claim 1 wherein said discharge chute extends axially of said roll brush and is adapted to the axial length of said roll brush.
6. The roll coating mechanism of claim 5 wherein said hopper is further provided with a feed inlet, said feed inlet being in communication with said accumulator chamber, said feed inlet being adapted to be connected to a supply means to maintain said accumulator chamber in a full condition during operation of said roll coating mechanism.
7. The roll coating mechanism according to any one of claims 1 to 6, further comprising a fixed plate and a second adjusting elastic member arranged along a second direction, wherein one end of the second adjusting elastic member abuts against the fixed plate, and the other end abuts against the bracket.
8. The roll coating mechanism according to claim 7, wherein at least two of said second adjusting elastic members are provided, and at least two of said second adjusting elastic members are provided respectively corresponding to both axial ends of said roll brush.
9. The roll coating mechanism according to claim 7, further comprising a limit switch for connecting to a mobile chassis or a robot arm, wherein the limit switch is mounted on the fixed plate and is used for detecting the distance between the limit switch and the working wall surface.
10. The roll coating equipment is characterized by comprising a movable chassis, a lifting mechanism, a mechanical arm and the roll coating mechanism according to any one of claims 1 to 9, wherein the roll coating mechanism is installed at the output end of the mechanical arm, the mechanical arm is fixed on the movable chassis through the lifting mechanism, and the lifting mechanism can drive the roll coating mechanism to lift so as to roll and brush the operation wall surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202121583744.2U CN218091843U (en) | 2021-07-13 | 2021-07-13 | Roller coating mechanism and roller coating equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202121583744.2U CN218091843U (en) | 2021-07-13 | 2021-07-13 | Roller coating mechanism and roller coating equipment |
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CN218091843U true CN218091843U (en) | 2022-12-20 |
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CN202121583744.2U Active CN218091843U (en) | 2021-07-13 | 2021-07-13 | Roller coating mechanism and roller coating equipment |
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2021
- 2021-07-13 CN CN202121583744.2U patent/CN218091843U/en active Active
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