Dot coating device
By improving the design of the winding device of the spot coating equipment, and utilizing linear drive components and a pushing mechanism, the material roll unloading process is simplified, solving the problem of cumbersome operation in the existing technology and improving the coating processing efficiency.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CYG NEW ENERGY MATERIAL RESEARCH INSTITUTE (GUANGDONG) CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-07-30
AI Technical Summary
Existing spot coating equipment is cumbersome to operate during the material roll unloading process, requiring the use of a crane, which increases downtime and affects coating processing efficiency.
The design combines an unwinding device, a coating device, a drying device, and a winding device. The first linear drive and the pushing mechanism simplify the material unloading process and eliminate the need for operators to control the crane.
It shortens the material roll feeding time, reduces the downtime of the dot coating equipment, and improves the coating process efficiency.
Smart Images
Figure CN2025090769_30072026_PF_FP_ABST
Abstract
Description
Spot coating equipment Technical Field
[0001] This invention relates to the field of coating technology, and particularly to dot coating equipment. Background Technology
[0002] A dot coating machine is used to coat the surface of a film. It applies coating material in dots onto the film surface and, after drying the coating, winds up the coated film. The winding device is a crucial component of the dot coating machine. It is primarily used to neatly wind up the film after coating and other processing steps for storage, transportation, and further processing. The winding device includes a winding roller that rotates to wind up the film. In existing technology, the film rolls are relatively heavy. When unloading the roll from the winding device, the operator first needs to stop the dot coating machine and wind the crane's rope around the roll so that the crane's rope can support the roll on the winding roller. Next, the operator needs to drive a forklift, aligning the forklift's forks with the winding roller. Then, the operator needs to operate the crane, which slowly moves the roll on the winding roller so that the roll is looped onto the forklift's forks. Finally, the operator needs to detach the crane's rope from the coil so that the forklift can move the coil away, completing the unloading process. The crane's operation is rather cumbersome; the operator needs to spend a significant amount of time winding the crane's rope around the coil and also removing it, increasing the unloading time and consequently the downtime of the dot coating equipment. Therefore, this is detrimental to improving the coating processing efficiency of the dot coating equipment. Summary of the Invention
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a dot coating device that is beneficial to improving the coating process efficiency of the dot coating device.
[0004] According to an embodiment of the present invention, a coating apparatus includes an unwinding device for unwinding a film from back to front; a coating device disposed in front of the unwinding device for coating the film; a drying device disposed in front of the coating device for drying the coating on the film; and a winding device disposed in front of the drying device. The winding device includes a frame, a shrinking roller, a pushing mechanism, a support portion, and a first linear drive component. The left end of the shrinking roller is rotatably connected to the frame. The film is wound up to form a roll on the expansion and contraction roller. A first linear drive is mounted on the frame. The support portion is slidably connected to the frame in a left-right direction. The first linear drive can drive the support portion to move to the right below the expansion and contraction roller. The expansion and contraction roller can contract so that the roll on the expansion and contraction roller falls onto the support portion. A pushing mechanism is mounted on the frame. The pushing mechanism is used to push the roll on the support portion from left to right so that the roll can detach from the expansion and contraction roller and the support portion and be fitted onto the forklift fork arm.
[0005] It has at least the following beneficial effects:
[0006] The unwinding device unwinds the uncoated film roll, causing the unwound film to move from back to front. A dot coating device located in front of the unwinding device applies a dotted coating to the film surface, creating dots of paint. Next, the film and the paint dots on it enter a drying device located in front of the dot coating device, where the paint dots are dried. After exiting the drying device, the film is wound up by the winding device to complete the film coating process. When unloading the film roll from the shrinking roller, the operator first moves a forklift to the winding device, aligning the forklift's forks with the right end of the shrinking roller. Then, the first linear drive unit moves the support to the right, positioning it below the shrinking roller and the film roll on it. The shrinking roller then contracts, causing the film roll to fall onto the support, which then supports the film roll. Finally, the pushing mechanism pushes the expansion roller and the material roll on the support from left to right, causing the material roll to move to the right and be placed on the forklift's forks, allowing the forklift to move the material roll away, thus completing the unloading of the material roll. The unwinding device in this dot coating equipment can quickly place the coated material roll onto the forklift's forks, eliminating the need for operators to control the crane, simplifying the material roll's descent, and shortening the unloading time. This, in turn, reduces the downtime of the dot coating equipment, thereby improving its coating processing efficiency.
[0007] According to an embodiment of the present invention, the support portion includes a first support plate, a second support plate, and a third support plate. The third support plate and the second support plate are both inclined. The third support plate and the second support plate are respectively connected to the front and rear ends of the first support plate. The included angle formed by the third support plate and the second support plate faces upward. The first support plate, the second support plate, and the third support plate are used to simultaneously abut against the material roll.
[0008] According to an embodiment of the dotting device of the present invention, the supporting part further includes a first auxiliary component, a second auxiliary component, and a third auxiliary component. The first auxiliary component includes a first driven belt, which is rotatably connected to the first support plate. The second auxiliary component includes a second driven belt, which is rotatably connected to the second support plate. The third auxiliary component includes a third driven belt, which is rotatably connected to the third support plate. The first support plate, the second support plate, and the third support plate simultaneously abut against the material roll via the first driven belt, the second driven belt, and the third driven belt, respectively. The first driven belt, the second driven belt, and the third driven belt are all used to convey the material roll to the right.
[0009] According to an embodiment of the dotting device of the present invention, the first auxiliary component includes multiple first drive rollers, both ends of which are rotatably connected to the first support plate. A first driven belt is wound around the multiple first drive rollers, and the inner side of the first driven belt is drively connected to the multiple first drive rollers. The second auxiliary component includes multiple second drive rollers, both ends of which are rotatably connected to the second support plate. A second driven belt is wound around the multiple second drive rollers, and the inner side of the second driven belt is drively connected to the multiple second drive rollers. The third auxiliary component includes multiple... The third drive roller, with both ends of the multiple third drive rollers rotatably connected to the third support plate, and the third driven belt wound around the multiple third drive rollers, with the inner side of the third driven belt being drivenly connected to the multiple third drive rollers, the rear ends of the multiple first drive rollers being drivenly connected to the front ends of the multiple second drive rollers, and the front ends of the multiple first drive rollers being drivenly connected to the rear ends of the multiple third drive rollers, so that the multiple first drive rollers, the multiple second drive rollers, and the multiple third drive rollers can rotate synchronously, and the first driven belt, the second driven belt, and the third driven belt can rotate synchronously.
[0010] According to an embodiment of the present invention, the support portion further includes a plurality of first universal couplings and a plurality of second universal couplings. The rear ends of the plurality of first drive rollers are respectively connected to one end of the plurality of first universal couplings, the other ends of the plurality of first universal couplings are respectively connected to the front ends of the plurality of second drive rollers, the front ends of the plurality of first drive rollers are respectively connected to one end of the plurality of second universal couplings, and the other ends of the plurality of second universal couplings are respectively connected to the rear ends of the plurality of third drive rollers.
[0011] According to an embodiment of the present invention, the surface of the first driven belt is provided with an elastic layer, the elastic layer being capable of elastic deformation, and the first driven belt abuts against the material roll through the elastic layer.
[0012] According to an embodiment of the dotting apparatus of the present invention, the winding device further includes a support mechanism, which is movably connected to the frame in a front-rear direction. The support mechanism is able to abut against the right end of the expansion roller so that the support mechanism can support the right end of the expansion roller. The support mechanism is also able to move forward and away from the right end of the expansion roller.
[0013] According to an embodiment of the present invention, the dotting device further includes a bearing, the inner ring of which is connected to the right end of the expansion and contraction roller. The support mechanism includes a base, a support block, and a third linear drive member. The base is movably connected to the frame in a front-rear direction. The support block is disposed on the base and has a support hole with the opening facing rearward. The support hole is used for the bearing to enter so that the inner wall of the support hole can abut against the outer ring of the bearing. The third linear drive member is disposed on the frame and can drive the base to move forward so that the bearing can disengage from the support hole.
[0014] According to an embodiment of the present invention, the opening of the support hole is provided with a guide slope, which can abut against the outer ring of the bearing.
[0015] The dotting apparatus according to an embodiment of the present invention further includes a preheating device disposed between the unwinding device and the dotting device, the preheating device being used to preheat the film.
[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0018] Figure 1 is a schematic diagram of the structure of the dotting device according to an embodiment of the present invention;
[0019] Figure 2 is a schematic diagram of the structure of the dotting device in the dotting equipment of the present invention;
[0020] Figure 3 is a schematic diagram of the winding device in the dotting equipment of the present invention;
[0021] Figure 4 is a magnified view of part A in Figure 3;
[0022] Figure 5 is a side view of the expansion and contraction roller, support part and material roll in the dotting equipment of the present invention;
[0023] Figure 6 is a schematic diagram of the winding device in the unloading state in the dot coating equipment of the present invention;
[0024] Figure 7 is a schematic diagram of the support portion in the dotting device of the present invention;
[0025] Figure 8 is a schematic diagram of the internal structure of the support portion in the dotting device of the present invention;
[0026] Reference numerals: Unwinding device 100; Dot coating device 200; Support 210; Back roller 220; Letterpress roller 230; Gravure roller 240; Material box 250; Drying device 300; Rewinding device 400; Frame 410; Expansion / contraction roller 420; Bearing 421; Pushing mechanism 430; Push plate 431; Support mechanism 440; Base 441; Support block 442; Support hole 443; Support part 450; First support plate 451; Second support plate 452; Third support plate 453; First auxiliary component 460; First driven belt 461; First transmission roller 462; First universal coupling 463; Second universal coupling 464; Second auxiliary component 470; Second driven belt 471; Second transmission roller 472; Third auxiliary component 480; Third driven belt 481; Third transmission roller 482; Preheating device 500; offset detection and correction device 600. Detailed Implementation
[0027] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.
[0028] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.
[0029] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.
[0030] Referring to Figures 1, 3, 5 and 6, the dotting device according to an embodiment of the present invention includes an unwinding device 100, a dotting device 200, a drying device 300 and a winding device 400.
[0031] The unwinding device 100 is used to unwind the film from back to front. The coating device 200 is located in front of the unwinding device 100 and is used to coat the film with coatings. The drying device 300 is located in front of the coating device 200 and is used to dry the coating on the film. The winding device 400 is located in front of the drying device 300. The winding device 400 includes a frame 410, a shrinking roller 420, a pushing mechanism 430, a support portion 450, and a first linear drive (not shown in the figure). The left end of the shrinking roller 420 is rotatably connected to the frame 410. The shrinking roller 420 is used to wind up the film so that the film is wound on the shrinking roller 420 to form a roll. The first linear drive is provided on the frame 410. The support portion 450 is slidably connected to the frame 410 in the left-right direction. The first linear drive can drive the support portion 450 to move to the right below the shrinking roller 420. The shrinking roller 420 can retract so that the roll on the shrinking roller 420 falls onto the support portion 450. The pushing mechanism 430 is provided on the frame 410. The pushing mechanism 430 is used to push the roll on the shrinking roller 420 from left to right so that the roll can be fitted onto the fork arm of a forklift.
[0032] The dot coating equipment includes, from back to front, an unwinding device 100, a dot coating device 200, a drying device 300, and the unwinding device 100. The unwinding device 100 is equipped with an unwinding roller for unwinding uncoated rolls. Rotation of the unwinding roller allows the uncoated roll to be unwound into film. In this embodiment, the drying device 300 is a drying chamber, a device that uses hot air to dry the coating on the film, allowing the dotted coating on the film to solidify. Both the unwinding device 100 and the winding device 400 are common devices in the coating field and will not be described further here.
[0033] Referring to Figures 1 and 2, the dot coating device 200 includes a support 210, a back roller 220, a letterpress roller 230, a gravure roller 240, and a material box 250. The back roller 220, letterpress roller 230, and gravure roller 240 are all rotatably connected to the support 210. The material box 250 is disposed on the support 210 and is used to store coating material. The gravure roller 240 is correspondingly disposed to the material box 250 so that the coating material in the material box 250 can be applied to the gravure roller 240. The letterpress roller 230 is correspondingly disposed to the gravure roller 240 so that the coating material on the gravure roller 240 can be transferred to the letterpress roller 230. The back roller 220 is used for winding the film. The gap between the back roller 220 and the letterpress roller 230 is used for the film to pass through so that the letterpress roller 230 can contact the film and dot the film with dotted coating material. Specifically, the gravure roller 240 has multiple material reservoirs, and the letterpress roller 230 has multiple raised dots. The paint in the material box 250 can be applied to the gravure roller 240, ensuring that all material reservoirs contain paint. The rotating letterpress roller 230 and gravure roller 240 cooperate with each other, allowing the multiple raised dots on the letterpress roller 230 to sequentially extend into the material reservoirs, resulting in paint adhering to the raised dots. Then, rotating the multiple raised dots on the letterpress roller 230 allows them to contact the surface of the film, transferring the paint from the raised dots to the film surface, thus creating multiple dots of paint on the film surface. In the coating field, the back roller 220, letterpress roller 230, and gravure roller 240 are common roller types, and will not be described further here.
[0034] The winding device 400 includes a frame 410, a shrinking roller 420, a feeding mechanism 430, a support part 450, and a first linear drive component. When the film needs to be wound up, a sleeve is first placed on the shrinking roller 420, and the first end of the unwound film is adhered to the sleeve. Then, the shrinking roller 420 rotates to wind up the coated film, causing the film to be wound onto the sleeve to form a roll. At this point, the roll on the shrinking roller 420 is the coated roll. In this embodiment of the invention, the dot coating equipment further includes a cutting device, an bonding device, and a roll radius detection device. The roll radius detection device has a preset radius value and is used to detect the radius of the roll on the expansion and contraction roller 420. When the roll on the expansion and contraction roller 420 reaches the preset radius, the expansion and contraction roller 420 stops rotating. The cutting device cuts the film between the drying device 300 and the winding device 400. Then, the bonding device bonds the end of the film to the roll on the expansion and contraction roller 420, so that the roll on the expansion and contraction roller 420 can be smoothly fed out later. In this embodiment of the invention, the cutting device, the bonding device, and the roll radius detection device are all common devices in the coating field, and will not be described in further detail here.
[0035] In this embodiment of the invention, the expansion and contraction roller 420 is a pneumatic expansion and contraction roller 420. The diameter of the expansion and contraction roller 420 can be changed. When the expansion and contraction roller 420 expands, its diameter increases, allowing it to tighten the material roll and thus securely fix it on the roller. When the expansion and contraction roller 420 contracts, its diameter decreases, releasing the material roll. The material roll on the roller will fall downwards a certain distance, at which point it can be removed from the roller. The support part 450 is movable on the frame 410 in the left and right direction. When it is necessary to unload the material roll on the expansion and contraction roller 420, the first linear drive member drives the support part 450 to move to the right, so that the support part 450 moves below the expansion and contraction roller 420 and the material roll on it. When the expansion and contraction roller 420 contracts, the material roll on the expansion and contraction roller 420 will fall onto the support part 450, and the support part 450 plays a supporting role for the material roll.
[0036] Understandably, the unwinding device 100 unwinds the uncoated roll, causing the unwound film to move from back to front. The dot coating device 200, located in front of the unwinding device 100, dot-coates the surface of the film, applying dotted coating to the film surface. Next, the film and the dotted coating on it enter the drying device 300, located in front of the dot coating device 200, which dries the dotted coating. After exiting the drying device 300, the film is wound up by the winding device 400 to complete the film coating process. When it is necessary to unload the roll on the shrink roller 420, the operator can first drive a forklift to the winding device 400, aligning the forklift's forks with the right end of the shrink roller 420. Then, the first linear drive unit drives the support part 450 to move to the right, moving the support part 450 below the shrink roller 420 and the roll on the shrink roller 420. Then, the expansion and contraction roller 420 contracts, causing the material roll on the roller to fall onto the support portion 450, which in turn supports the material roll. Finally, the pushing mechanism 430 pushes the material roll on the expansion and contraction roller 420 and the support portion 450 from left to right, causing the material roll to move to the right and be placed on the forklift's fork arm, allowing the forklift to transport the material roll away, thus completing the unloading of the material roll. The unwinding device 100 in this dot coating equipment can quickly place the coated material roll onto the forklift's fork arm, eliminating the need for operators to control the crane, simplifying the material roll's descent method, and shortening the unloading time. Consequently, the downtime of the dot coating equipment can also be reduced, thus improving the coating processing efficiency of the dot coating equipment.
[0037] It should be explained that, referring to Figure 6, the coil moves to the right under the push of the pusher mechanism 430. When the right end of the coil leaves the right end of the expansion roller 420, it will be placed on the forklift arm. As the coil moves to the right, the forklift arm, the support part 450 and the expansion roller 420 can support the coil at the same time, so that the pusher mechanism 430 can push the coil completely onto the forklift arm, so that the coil is completely separated from the expansion roller 420 and completely placed on the forklift arm. Referring to Figure 3, in this embodiment of the invention, the pushing mechanism 430 includes a push plate 431 and a second linear drive (not shown in the figure). The push plate 431 is slidably connected to the frame 410 in the left-right direction. The second linear drive is disposed on the frame 410, and its output end is connected to the push plate 431. The second linear drive can drive the push plate 431 to move to the right, so that the push plate 431 can push the material roll on the expansion roller 420 to move to the right and onto the forklift's fork arm. After the push plate 431 pushes the material roll on the expansion roller 420 to the right onto the forklift's fork arm, and the material roll is completely on the forklift's fork arm, the second linear drive drives the push plate 431 to move to the left to reset, and the first linear drive drives the support portion 450 to move to the left to reset. In this embodiment of the invention, both the first linear drive and the second linear drive can be a cylinder or a hydraulic cylinder. It should be explained that during the winding process of the expansion and contraction roller 420, the support part 450 is housed in the frame 410 and is located away from the bottom of the expansion and contraction roller 420 and the material roll.
[0038] Referring to Figures 5 to 7, the support portion 450 includes a first support plate 451, a second support plate 452, and a third support plate 453. Both the third support plate 453 and the second support plate 452 are inclined and connected to the front and rear ends of the first support plate 451, respectively. The included angle formed by the third support plate 453 and the second support plate 452 faces upwards. The first support plate 451, the second support plate 452, and the third support plate 453 are used to simultaneously abut against the material roll. It can be understood that the first support plate 451 is connected to the output end of the first linear drive member. The third support plate 453 and the second support plate 452 are both inclined and respectively positioned on the front and rear ends of the first support plate 451, such that the area enclosed by the first support plate 451, the second support plate 452, and the third support plate 453 is used for the lower part of the material roll to extend into. When the expansion and contraction roller 420 retracts, the material roll sleeved on the expansion and contraction roller 420 will fall downwards a certain distance, causing the material roll to simultaneously land on the first support plate 451, the second support plate 452, and the third support plate 453. This allows the first support plate 451, the second support plate 452, and the third support plate 453 to simultaneously abut against the material roll. The simultaneous support of the first support plate 451, the second support plate 452, and the third support plate 453 allows the material roll to move more smoothly during the subsequent pushing mechanism 430's operation.
[0039] In one embodiment of the present invention, the dotting device further includes multiple guide sleeves and multiple guide posts. The multiple guide posts are parallel to the left-right direction and are all mounted on the frame 410. The multiple guide sleeves are evenly distributed on the bottom of the first support plate 451, the second support plate 452, and the third support plate 453. The multiple guide sleeves are respectively fitted onto the multiple guide posts, allowing them to slide left-right on the multiple guide posts, thereby enabling the first support plate 451, the second support plate 452, and the third support plate 453 to slide left-right. Furthermore, the multiple guide posts assist the first support plate 451, the second support plate 452, and the third support plate 453 in supporting the material roll, allowing them to support the material roll more stably.
[0040] Referring to Figures 5 and 7, the support portion 450 further includes a first auxiliary component 460, a second auxiliary component 470, and a third auxiliary component 480. The first auxiliary component 460 includes a first driven belt 461, which is rotatably connected to the first support plate 451. The second auxiliary component 470 includes a second driven belt 471, which is rotatably connected to the second support plate 452. The third auxiliary component 480 includes a third driven belt 481, which is rotatably connected to the third support plate 453. The first driven belt 461, the second driven belt 471, and the third driven belt 481 are used to simultaneously abut against the material roll so that the material roll moving to the right can simultaneously drive the first driven belt 461, the second driven belt 471, and the third driven belt 481 to rotate. The first driven belt 461, the second driven belt 471, and the third driven belt 481 are all used to convey the material roll to the right.
[0041] Understandably, the first support plate 451, the second support plate 452, and the third support plate 453 simultaneously abut against the material roll via the first driven belt 461, the second driven belt 471, and the third driven belt 481, respectively. When it is necessary to unload the material roll on the expansion and contraction roller 420, the first linear drive unit drives the first support plate 451, the second support plate 452, and the third support plate 453 to move to the right, so that the first support plate 451, the second support plate 452, and the third support plate 453 move to below the expansion and contraction roller 420 and the material roll on the expansion and contraction roller 420. Then the expansion and contraction roller 420 contracts, so that the material roll on the expansion and contraction roller 420 falls onto the first driven belt 461, the second driven belt 471, and the third driven belt 481. Then, the pushing mechanism 430 pushes the material roll on the expansion and contraction roller 420 from left to right, so that the material roll can move from left to right on the first driven belt 461, the second driven belt 471, and the third driven belt 481. Since the material roll simultaneously abuts against the first driven belt 461, the second driven belt 471, and the third driven belt 481, and there is friction between the material roll and the first driven belt 461, the second driven belt 471, and the third driven belt 481, and the material roll is relatively heavy, the material roll moving to the right can simultaneously drive the first driven belt 461, the second driven belt 471, and the third driven belt 481 to rotate. After the first driven belt 461, the second driven belt 471 and the third driven belt 481 rotate under the drive of the material roll, there will be no relative movement between the material roll and the first driven belt 461, the second driven belt 471 and the third driven belt 481. This ensures that the material roll will not be scratched by the first driven belt 461, the second driven belt 471 and the third driven belt 481 during the process of moving to the right, which helps to ensure the yield rate of the material roll.
[0042] Referring to Figures 7 and 8, the first auxiliary component 460 includes multiple first drive rollers 462, both ends of which are rotatably connected to the first support plate 451. A first driven belt 461 is wound around the multiple first drive rollers 462, and the inner side of the first driven belt 461 is drive-connected to the multiple first drive rollers 462. The second auxiliary component 470 includes multiple second drive rollers 472, both ends of which are rotatably connected to the second support plate 452. A second driven belt 471 is wound around the multiple second drive rollers 472, and the inner side of the second driven belt 471 is drive-connected to the multiple second drive rollers 472. The third auxiliary component 480 includes multiple third... The front and rear ends of the multiple third drive rollers 482 are rotatably connected to the third support plate 453. The third driven belt 481 is wound around the multiple third drive rollers 482, and the inner side of the third driven belt 481 is drivenly connected to the multiple third drive rollers 482. The rear ends of the multiple first drive rollers 462 are drivenly connected to the front ends of the multiple second drive rollers 472, and the front ends of the multiple first drive rollers 462 are drivenly connected to the rear ends of the multiple third drive rollers 482, so that the multiple first drive rollers 462, the multiple second drive rollers 472 and the multiple third drive rollers 482 can rotate synchronously, and the first driven belt 461, the second driven belt 471 and the third driven belt 481 can rotate synchronously.
[0043] In this embodiment of the invention, both the second support plate 452 and the third support plate 453 are inclined, so the second driven belt 471 on the second support plate 452 and the third driven belt 481 on the third support plate 453 are also inclined. Referring to FIG8, the front end of the second drive roller 472 is the end of the second drive roller 472 near the first drive roller 462, and the rear end of the third drive roller 482 is the end of the third drive roller 482 near the first drive roller 462. Multiple first drive rollers 462 are evenly distributed on the first support plate 451 in the left-right direction, multiple second drive rollers 472 are evenly distributed on the second support plate 452 in the left-right direction, and multiple third drive rollers 482 are evenly distributed on the third support plate 453 in the left-right direction.
[0044] It is understood that the inner side of the first driven belt 461 is connected to multiple first drive rollers 462, that is, the rotating first driven belt 461 can drive multiple first drive rollers 462 to rotate synchronously; the inner side of the second driven belt 471 is connected to multiple second drive rollers 472, that is, the rotating second driven belt 471 can drive multiple second drive rollers 472 to rotate synchronously; and the inner side of the third driven belt 481 is connected to multiple third drive rollers 482, that is, the rotating third driven belt 481 can drive multiple third drive rollers 482 to rotate synchronously. Since the rear ends of multiple first drive rollers 462 are respectively connected to the front ends of multiple second drive rollers 472, and the front ends of multiple first drive rollers 462 are respectively connected to the rear ends of multiple third drive rollers 482, the multiple first drive rollers 462, multiple second drive rollers 472 and multiple third drive rollers 482 can rotate synchronously, and the first driven belt 461, the second driven belt 471 and the third driven belt 481 can rotate synchronously.
[0045] In this embodiment of the invention, both the second support plate 452 and the third support plate 453 are inclined, so the second driven belt 471 on the second support plate 452 and the third driven belt 481 on the third support plate 453 are also inclined. When the material roll simultaneously abuts against the first driven belt 461, the second driven belt 471, and the third driven belt 481, the force exerted by the material roll on the first driven belt 461 is the greatest, while the force exerted on the second driven belt 471 and the third driven belt 481 is relatively small. Assuming that the first driven belt 461, the second driven belt 471, and the third driven belt 481 cannot rotate synchronously, it is easy to understand that during the process of the pusher mechanism 430 pushing the material roll to the right, the material roll exerts the greatest force on the first driven belt 461 and a smaller force on the second driven belt 471 and the third driven belt 481. This can easily cause the material roll to fail to drive the second driven belt 471 and the third driven belt 481 to rotate, which can easily cause the second driven belt 471 and the third driven belt 481 to slip. This makes it easy for the material roll to move relative to the second driven belt 471 and the third driven belt 481, which can easily cause the material roll to be scratched by the second driven belt 471 and the third driven belt 481, which is not conducive to ensuring the yield rate of the material roll. In this embodiment of the invention, since the first driven belt 461, the second driven belt 471 and the third driven belt 481 are interconnected, the material roll moving to the right can simultaneously drive the first driven belt 461, the second driven belt 471 and the third driven belt 481 to rotate synchronously. This effectively prevents the second driven belt 471 and the third driven belt 481 from slipping due to the smaller force exerted by the material roll, thereby preventing the material roll from being scratched by the second driven belt 471 and the third driven belt 481, which helps to ensure the yield rate of the material roll.
[0046] In this embodiment of the invention, since both the second support plate 452 and the third support plate 453 are inclined, the multiple second drive rollers 472 and the multiple third drive rollers 482 are also inclined, and the included angle formed by the second drive rollers 472 and the third drive rollers 482 faces upward. As an embodiment of the invention, the first driven belt 461 is a first synchronous belt, and the first drive roller 462 is a first synchronous roller. The inner side of the first driven belt 461 is provided with teeth, and the outer wall of the first drive roller 462 is also provided with teeth. The teeth on the first driven belt 461 can mesh with the teeth on the outer wall of the first drive roller 462, so that the first driven belt 461 and the first drive roller 462 can rotate synchronously. The second driven belt 471 and the third driven belt 481 can be the second synchronous belt and the third synchronous belt, respectively, and the second drive roller 472 and the third drive roller 482 can be the second synchronous roller and the third synchronous roller, respectively. Synchronous belts and synchronous rollers are common components and will not be described further here.
[0047] Referring to Figure 8, the support portion 450 also includes a plurality of first universal couplings 463 and a plurality of second universal couplings 464. The rear ends of the plurality of first drive rollers 462 are respectively connected to one end of the plurality of first universal couplings 463, the other ends of the plurality of first universal couplings 463 are respectively connected to the front ends of the plurality of second drive rollers 472, the front ends of the plurality of first drive rollers 462 are respectively connected to one end of the plurality of second universal couplings 464, and the other ends of the plurality of second universal couplings 464 are respectively connected to the rear ends of the plurality of third drive rollers 482. It is understood that the first drive roller 462 is connected to the second drive roller 472 via the first universal coupling 463, and the first drive roller 462 is connected to the third drive roller 482 via the second universal coupling 464, so as to achieve synchronous rotation of the first drive roller 462, the second drive roller 472, and the third drive roller 482, thereby achieving synchronous rotation of the first driven belt 461, the second driven belt 471, and the third driven belt 481. The first universal coupling 463 and the second universal coupling 464 are common transmission components, and will not be described further here.
[0048] In one embodiment of the present invention, the surface of the first driven belt 461 is provided with an elastic layer. The first driven belt 461 abuts against the material roll through the elastic layer, and the elastic layer can undergo elastic deformation. It is understood that, since the material roll is relatively heavy, the material roll abutting against the elastic layer can cause the elastic layer to undergo elastic deformation. The elastically deformed layer can better conform to the surface of the material roll, allowing the first driven belt 461 to provide more uniform support for the material roll. On the other hand, the elastically deformed layer can evenly distribute the weight of the material roll on the surface of the first driven belt 461, avoiding indentations at the bottom of the material roll due to stress concentration, which helps ensure the yield rate of the material roll. In one embodiment of the present invention, the elastic layer can be a silicone layer or a rubber layer.
[0049] Referring to Figures 3 and 6, the winding device 400 also includes a support mechanism 440, which is movably connected to the frame 410 in the front-rear direction. The support mechanism 440 abuts against the right end of the shrinking roller 420, thereby supporting the right end of the shrinking roller 420. The support mechanism 440 can move forward and away from the right end of the shrinking roller 420. It is understood that during the film winding process of the shrinking roller 420, the support mechanism 440 abuts against the right end of the shrinking roller 420, enabling the shrinking roller 420 to smoothly wind the film and support the roll. When it is necessary to unload the roll from the shrinking roller 420, the operator can first drive a forklift to the winding device 400, aligning the forklift's forks with the right end of the shrinking roller 420. Next, the first linear drive unit drives the support portion 450 to move to the right, so that the support portion 450 moves below the expansion roller 420 and the coil on the expansion roller 420. Then, the expansion roller 420 retracts, so that the coil on the expansion roller 420 falls onto the support portion 450, thereby enabling the support portion 450 to support the coil. Then, the support mechanism 440 moves forward, so that the support mechanism 440 disengages from the right end of the expansion roller 420 and moves away from the expansion roller 420, so that the support mechanism 440 does not obstruct the rightward movement of the coil. Finally, the pushing mechanism 430 pushes the coil on the expansion roller 420 and the support portion 450 from left to right, so that the coil moves to the right and is completely wrapped on the forklift's forks, thereby enabling the forklift to transport the coil away, completing the unloading of the coil. After the material roll is unloaded, the push mechanism is reset. The first linear drive unit drives the support part 450 to move to the left to reset, and the support mechanism 440 moves to the back to reset, so that the support mechanism 440 abuts against the right end of the expansion and contraction roller 420 again.
[0050] In this embodiment of the invention, the roll radius detection device can maintain the radius of the unloaded roll at a preset radius value, so that the first driven belt 461, the second driven belt 471, and the third driven belt 481 can simultaneously support the roll. As an embodiment of the invention, the second support plate 452 and the third support plate 453 are both rotatably connected to the first support plate 451, so that the angle formed by the second support plate 452 and the third support plate 453 can be adjusted according to the radius of the roll. It is understood that the front end of the second support plate 452 is rotatably connected to the rear end of the first support plate 451, allowing the second support plate 452 to swing relative to the first support plate 451, and the rear end of the third support plate 453 is rotatably connected to the front end of the first support plate 451, allowing the third support plate 453 to swing relative to the first support plate 451. It should be explained that after the second support plate 452 and the third support plate 453 swing, the second driven belt 471 and the third driven belt 481 will swing together with the second support plate 452 and the third support plate 453 respectively, so that the angle between the second driven belt 471 and the third driven belt 481 can be adjusted.
[0051] The angle between the second support plate 452 and the third support plate 453 can be adjusted according to the radius of the material roll. For example, when the radius of the material roll increases, the second support plate 452 and the third support plate 453 can be swung away from each other, increasing the angle between them. This allows the first driven belt 461, the second driven belt 471, and the third driven belt 481 to simultaneously support materials with larger radii. Conversely, when the radius of the material roll decreases, the second support plate 452 and the third support plate 453 can be swung closer to each other, decreasing the angle between them. This allows the first driven belt 461, the second driven belt 471, and the third driven belt 481 to simultaneously support material rolls with smaller radii.
[0052] In one embodiment of the present invention, the support portion 450 further includes a second hinge shaft, a third hinge shaft, a second fixing component, and a third fixing component. The second support plate 452 is connected to the first support plate 451 via the second hinge shaft and can be fixed to the first support plate 451 via the second fixing component. The third support plate 453 is connected to the first support plate 451 via the third hinge shaft and can be fixed to the first support plate 451 via the third fixing component. The second and third hinge shafts are common rotating configurations and will not be further described here. After the angle between the second support plate 452 and the third support plate 453 is adjusted, the second and third support plates 452 and 453 can be fixed by the second and third fixing components respectively to prevent the second and third support plates 452 and 453 from swinging. The second and third fixing components can be a second nut and a third nut, respectively. Both the second and third hinge shafts have threaded structures. The second nut is tightened onto the threaded structure on the second hinge shaft, preventing the second hinge shaft from rotating around its own axis, thereby fixing the second support plate 452. The third nut is tightened onto the threaded structure on the third hinge shaft, preventing the third hinge shaft from rotating around its own axis, thereby fixing the third support plate 453. The second and third fixing components can also be other structures capable of fixing the hinge shafts, which will not be further elaborated here.
[0053] Referring to Figures 3 and 4, the dotting equipment also includes a bearing 421. The inner ring of the bearing 421 is connected to the right end of the expansion and contraction roller 420. The support mechanism 440 includes a base 441, a support block 442, and a third linear drive (not shown in the figure). The base 441 is movably connected to the frame 410 in the front-rear direction. The support block 442 is disposed on the base 441 and has a support hole 443. The opening of the support hole 443 faces rearward and is used for the bearing 421 to enter so that the inner wall of the support hole 443 can abut against the outer ring of the bearing 421. The third linear drive is disposed on the frame 410 and can drive the base 441 to move forward so that the bearing 421 can disengage from the support hole 443. Understandably, during the film winding process of the expansion and contraction roller 420, the bearing 421 on the right end of the expansion and contraction roller 420 is located in the support hole 443 on the support block 442. The inner wall of the support hole 443 abuts against the outer ring of the bearing 421, so that the inner wall of the support hole 443 can support the bearing 421 and the right end of the expansion and contraction roller 420. When it is necessary to unload the roll on the expansion and contraction roller 420, the third linear drive can drive the base 441 forward, so that the support block 442 moves away from the bearing 421 and the expansion and contraction roller 420, and the bearing 421 is disengaged from the support hole 443. At this time, the base 441 and the support block 442 will not obstruct the roll moving to the right.
[0054] In this embodiment of the invention, a guide ramp is provided at the opening of the support hole 443, which abuts against the outer ring of the bearing 421. It is understood that after the material roll is unloaded, the third linear drive unit drives the base 441 to move backward. During the backward movement of the base 441 and the support block 442, the guide ramp abuts against the outer ring of the bearing 421 on the right end of the expansion roller 420. The guide ramp acts as a guide, allowing the bearing 421 to smoothly enter the support hole 443. In this embodiment of the invention, the support mechanism 440 also includes a clamping assembly, which is disposed on the support block 442. The clamping assembly is used to clamp the outer ring of the bearing 421, so that the outer ring of the bearing 421 can be fixed on the inner wall of the support hole 443. Understandably, during the film winding process of the expansion and contraction roller 420, the clamping assembly on the support block 442 can clamp the outer ring of the bearing 421, so that the outer ring of the bearing 421 can be fixed on the inner wall of the support hole 443, preventing the outer ring of the bearing 421 from rotating during the rotation of the expansion and contraction roller 420. When unloading is required, the operator can release the outer ring of the bearing 421 by the clamping assembly, and then the third linear drive will drive the base 441 forward, thereby causing the bearing 421 to disengage from the support hole 443. In this embodiment of the invention, the third linear drive can be a cylinder, which will not be further described here.
[0055] Referring to Figure 1, the dotting equipment also includes a preheating device 500, which is located between the unwinding device 100 and the dotting device 200. The preheating device 500 is used to preheat the film. It is understood that the preheating device 500 can preheat the film, raising its temperature, which helps improve coating adhesion. Furthermore, preheating allows the film to spread out, effectively preventing wrinkles and thus improving the yield of the finished film. In this embodiment of the invention, the preheating device 500 is a preheating box, a common feature in the coating field, and will not be described further here.
[0056] Referring to Figure 1, in this embodiment of the invention, the dot coating equipment further includes a deviation detection and correction device 600. The deviation detection and correction device 600 has a preset deviation range and is located between the winding device 400 and the drying device 300. The deviation detection and correction device 600 is used to detect the deviation of the film and can drive the film to move in the left-right direction so that the deviation falls within the preset deviation range. The deviation detection and correction device 600 can adjust the deviation of the film in real time, keeping the film in a predetermined position and avoiding positional deviations during film winding, thus improving the winding quality of the film. The deviation detection and correction device 600 is a common feature in the coating field and will not be described further here.
[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0058] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A dotting device, characterized in that, include: An unwinding device (100) for unwinding film from back to front; A dotting device (200) is provided in front of the unwinding device (100) and is used to dot the film. A drying device (300) is provided in front of the dotting device (200) and is used to dry the coating on the film. A winding device (400) is located in front of the drying device (300); The winding device (400) includes a frame (410), a shrinking roller (420), a pushing mechanism (430), a support part (450), and a first linear drive. The left end of the shrinking roller (420) is rotatably connected to the frame (410). The shrinking roller (420) is used to wind the film so that the film is wound on the shrinking roller (420) to form a roll. The first linear drive is disposed on the frame (410). The support part (450) is slidably connected to the frame (410) in the left-right direction. The first linear drive unit can drive the support part (450) to move to the right below the expansion roller (420), the expansion roller (420) can retract so that the material roll on the expansion roller (420) falls onto the support part (450), the pushing mechanism (430) is provided on the frame (410), the pushing mechanism (430) is used to push the material roll of the support part (450) from left to right so that the material roll can be separated from the expansion roller (420) and the support part (450) and fitted onto the forklift fork arm.
2. The dotting equipment according to claim 1, characterized in that: The supporting part (450) includes a first support plate (451), a second support plate (452) and a third support plate (453). The third support plate (453) and the second support plate (452) are both inclined. The third support plate (453) and the second support plate (452) are respectively connected to the front and rear ends of the first support plate (451). The included angle formed by the third support plate (453) and the second support plate (452) is upward. The first support plate (451), the second support plate (452) and the third support plate (453) are used to simultaneously abut against the material roll.
3. The dotting equipment according to claim 2, characterized in that: The support portion (450) further includes a first auxiliary component (460), a second auxiliary component (470), and a third auxiliary component (480). The first auxiliary component (460) includes a first driven belt (461) rotatably connected to the first support plate (451). The second auxiliary component (470) includes a second driven belt (471) rotatably connected to the second support plate (452). The third auxiliary component (480) includes... The third driven belt (481) is rotatably connected to the third support plate (453). The first support plate (451), the second support plate (452), and the third support plate (453) abut against the material roll simultaneously via the first driven belt (461), the second driven belt (471), and the third driven belt (481), respectively. The first driven belt (461), the second driven belt (471), and the third driven belt (481) are all used to transport the material roll to the right.
4. The dotting equipment according to claim 3, characterized in that: The first auxiliary component (460) includes multiple first drive rollers (462), both ends of which are rotatably connected to the first support plate (451). A first driven belt (461) is wound around the multiple first drive rollers (462), and the inner side of the first driven belt (461) is drive-connected to the multiple first drive rollers (462). The second auxiliary component (470) includes multiple second drive rollers (472), both ends of which are rotatably connected to the second support plate (452). A second driven belt (471) is wound around the multiple second drive rollers (472), and the inner side of the second driven belt (471) is drive-connected to the multiple second drive rollers (472). The third auxiliary component (480) includes multiple third drive rollers (462). 82) Both ends of the multiple third drive rollers (482) are rotatably connected to the third support plate (453). The third driven belt (481) is wound around the multiple third drive rollers (482). The inner side of the third driven belt (481) is drivenly connected to the multiple third drive rollers (482). The rear ends of the multiple first drive rollers (462) are drivenly connected to the front ends of the multiple second drive rollers (472). The front ends of the multiple first drive rollers (462) are drivenly connected to the rear ends of the multiple third drive rollers (482), so that the multiple first drive rollers (462), the multiple second drive rollers (472) and the multiple third drive rollers (482) can rotate synchronously, and the first driven belt (461), the second driven belt (471) and the third driven belt (481) can rotate synchronously.
5. The dotting equipment according to claim 4, characterized in that: The support portion (450) further includes a plurality of first universal couplings (463) and a plurality of second universal couplings (464). The rear ends of the plurality of first drive rollers (462) are respectively connected to one end of the plurality of first universal couplings (463). The other ends of the plurality of first universal couplings (463) are respectively connected to the front ends of the plurality of second drive rollers (472). The front ends of the plurality of first drive rollers (462) are respectively connected to one end of the plurality of second universal couplings (464). The other ends of the plurality of second universal couplings (464) are respectively connected to the rear ends of the plurality of third drive rollers (482).
6. The dotting equipment according to claim 4, characterized in that: The surface of the first driven belt (461) is provided with an elastic layer, which is capable of elastic deformation, and the first driven belt (461) abuts against the material roll through the elastic layer.
7. The dotting equipment according to claim 1, characterized in that: The winding device (400) further includes a support mechanism (440) which is movably connected to the frame (410) in the front-rear direction. The support mechanism (440) is able to abut against the right end of the expansion roller (420) so that the support mechanism (440) can support the right end of the expansion roller (420). The support mechanism (440) is also able to move forward and away from the right end of the expansion roller (420).
8. The dotting equipment according to claim 7, characterized in that: It also includes a bearing (421), the inner ring of which is connected to the right end of the expansion and contraction roller (420). The support mechanism (440) includes a base (441), a support block (442), and a third linear drive. The base (441) is movably connected to the frame (410) in the front-rear direction. The support block (442) is disposed on the base (441) and has a support hole (443) with the opening facing rearward. The support hole (443) is used for the bearing (421) to enter so that the inner wall of the support hole (443) can abut against the outer ring of the bearing (421). The third linear drive is disposed on the frame (410) and can drive the base (441) to move forward so that the bearing (421) can disengage from the support hole (443).
9. The dotting equipment according to claim 8, characterized in that: The opening of the support hole (443) is provided with a guide slope, which can abut against the outer ring of the bearing (421).
10. The dotting equipment according to claim 1, characterized in that: It also includes a preheating device (500), which is located between the unwinding device (100) and the dotting device (200), and the preheating device (500) is used to preheat the film.