A coating scraper device

Abstract

The present invention discloses a coating scraper device, comprising: a scraper body, the scraper body being provided with a mounting position matching a blade; a long pressure plate made of elastic material, the long pressure plate being provided with a movable support portion in contact with the scraper body, and a side edge of the long pressure plate extending along its length direction being opposite to the mounting position; a locking mechanism being provided on the scraper body, the locking mechanism being capable of driving the long pressure plate to rotate around the movable support portion so that the side edge of the long pressure plate opposite to the mounting position is elastically deformed and pressed against the blade. When installing the blade, the blade is first placed on the mounting position of the scraper body, and the locking mechanism is operated to drive the long pressure plate to rotate around the movable support portion to a certain angle and then stabilize, at which time the long pressure plate presses against the blade toward the side edge of the mounting position and generates a certain elastic deformation; when removing the blade, the locking mechanism is operated to drive the long pressure plate to separate from the blade; the above structure makes it faster and safer to remove and install the blade.

Description

Technical Field

[0001] The present invention relates to the technical field of coating equipment, in particular to a coating scraper device. Background Art

[0002] A scraper is a device used to scrape away excess coating during coating production, smoothing the coating surface and facilitating a uniform coating thickness. The blades used in scrapers are consumable and require periodic replacement to ensure effective operation.

[0003] Because the blade of a coating scraper device is long and narrow, conventional techniques typically use a long pressure plate that matches the blade's length to secure the blade to the scraper body. To ensure the blade remains secure at all locations along its length, multiple fastening screws are spaced along the length of the pressure plate, which are used to press the pressure plate against the blade. This mounting method makes blade replacement very cumbersome, inefficient, and unsafe. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a coating scraper device that is more convenient and safer when the blade is disassembled.

[0005] According to an embodiment of the present invention, a coating scraper device includes: a scraper body, the scraper body is provided with a mounting position matching the blade; a long pressure plate made of elastic material, the long pressure plate is provided with a movable support portion in contact with the scraper body, and a side edge of the long pressure plate extending along its length direction is opposite to the mounting position; a locking mechanism is provided on the scraper body, and the locking mechanism can drive the long pressure plate to rotate around the movable support portion so that the side edge of the long pressure plate opposite to the mounting position is elastically deformed and pressed against the blade.

[0006] The coating scraper device according to the embodiment of the present invention has at least the following beneficial effects:

[0007] When installing the blade of the coating scraper device with the above structure, the blade is first placed at the installation position of the scraper body. By operating the locking mechanism, the long pressure plate can be driven to rotate around the movable support part to a certain angle and then stabilize. At this time, the long pressure plate presses against the blade with an edge on one side of the installation position and produces a certain elastic deformation. The blade can be accurately positioned and fixed at the corresponding position of the scraper body at each position along its length direction; when removing the blade, the locking mechanism is operated to drive the long pressure plate to rotate around the movable support part until it is separated from the blade. The long pressure plate also restores its elastic deformation, and the blade can be taken out from the installation position; the disassembly and assembly of the blade using the above structure is more efficient and the operation is safer.

[0008] In some embodiments of the present invention, the movable support portion is in the shape of an elongated strip, and the movable support portion is arranged in the middle of the width direction of the elongated pressure plate and extends along the length direction of the elongated pressure plate. The scraper body is provided with a movable groove adapted to the movable support portion, and the locking mechanism is used to push the elongated pressure plate away from one side edge of the installation position so that the elongated pressure plate and the scraper body clamp the blade.

[0009] In some embodiments of the present invention, a side edge of the elongated pressure plate away from the mounting position is provided with a side extension plate extending along the length direction of the elongated pressure plate, and the locking mechanism includes a driving rod rotatably arranged on the scraper body, and the outer peripheral wall of the driving rod is provided with a first surface capable of pushing the side extension plate and a second surface separated from the side extension plate.

[0010] In some embodiments of the present invention, a one-way bearing is provided between the driving rod and the scraper body to stabilize the driving rod after rotation.

[0011] In some embodiments of the present invention, the first surface is an arc surface arranged around the axial direction of the driving rod, the second surface is a plane portion connected to both ends of the arc surface, and the side extension plate is parallel to the movable support portion; when the driving rod rotates to the point where the arc surface is opposite to the side extension plate, the arc surface pushes the side extension plate to move one side edge of the long pressure plate closer to the installation position; when the driving rod rotates to the point where the plane portion is opposite to the side extension plate, there is a height gap between the plane portion and the side extension plate.

[0012] In some embodiments of the present invention, the coating scraper device further comprises a fixed seat, on which is provided a linear reciprocating mechanism connected to the scraper body, and the linear reciprocating mechanism is used to drive the scraper body to move linearly back and forth along its length direction.

[0013] In some embodiments of the present invention, the linear reciprocating mechanism includes a sliding seat connected to the scraper body, a connecting rod is rotatably connected to the sliding seat, the other end of the connecting rod is rotatably connected to a crank, and the crank is connected to a motor that drives it to rotate.

[0014] In some embodiments of the present invention, a movable seat is slidably provided on the fixed seat and is orthogonal to the movement direction of the linear reciprocating mechanism. The linear reciprocating mechanism is provided between the movable seat and the scraper body. A displacement adjustment mechanism for driving the movable seat to move is provided between the movable seat and the fixed seat.

[0015] In some embodiments of the present invention, a guide rod parallel to the sliding direction of the sliding seat is provided on the movable seat, a guide sleeve that can slide back and forth along the guide rod is provided between the scraper body and the sliding seat, and a limiting assembly is provided between the guide sleeve and the guide rod.

[0016] In some embodiments of the present invention, the displacement adjustment mechanism includes a cylinder connected to the movable seat, the movable seat is movably provided with a cross bar parallel to the extension and contraction direction of the cylinder, a vertical screw rod is rotatably provided on the movable seat, the screw rod is transmission-connected with a lifting block, one end of the cross bar abuts against the fixed seat, the lifting block is provided with a driving inclined surface abutting against the other end of the cross bar on the movable seat, and the screw rod is connected to a rotating rod that drives it to rotate through a reduction gear box.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0019] Figure 1 Schematic diagram of the structure of an embodiment of the coating scraper device of the present invention;

[0020] Figure 2 for Figure 1 A schematic structural diagram of the scraper body, the long pressing plate, the locking mechanism and the blade in the embodiment;

[0021] Figure 3 for Figure 2 Schematic diagram of local structural decomposition;

[0022] Figure 4 for Figure 1 A schematic diagram of the layout structure of the embodiment from another perspective;

[0023] Figure 5 for Figure 1 A schematic cross-sectional view of an embodiment. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] See also Figures 1 to 3 A coating scraper device of the present invention includes: a scraper body 100, the scraper body 100 is provided with a mounting position 110 matching a blade 400; a long pressing plate 200 made of elastic material, the long pressing plate 200 is provided with a movable supporting portion 210 in contact with the scraper body 100, and a side edge of the long pressing plate 200 extending along its length direction is opposite to the mounting position 110; a locking mechanism 300 is provided on the scraper body 100, and the locking mechanism 300 can drive the long pressing plate 200 to rotate around the movable supporting portion 210 so that the side edge of the long pressing plate 200 opposite to the mounting position 110 is elastically deformed and pressed against the blade 400.

[0029] When installing the blade 400 of the coating scraper device with the above structure, the blade 400 is first placed at the installation position 110 of the scraper body 100, and then the long pressure plate 200 is driven to rotate around the movable support part 210 by operating the locking mechanism 300. After one side edge of the long pressure plate 200 abuts against the blade 400, the long pressure plate 200 continues to rotate around the movable support part 210 by a certain angle until the part of the long pressure plate 200 abutting against the blade 400 produces a certain elastic deformation. At this time, the locking mechanism 300 is in a locked state. Under the action of the elastic force, the blade 400 can be stably clamped between the long pressure plate 200 and the scraper body 100, and each position of the blade 400 along its length direction can be accurately positioned and fixed at the corresponding position of the scraper body 100 to ensure that the coating thickness on the coated substrate is uniform. When removing the blade 400, the locking mechanism 300 is operated to drive the long pressure plate 200 to return and rotate around the movable support part 210, and the long pressure plate 200 gradually recovers its elastic deformation until the long pressure plate 200 and the blade 400 are separated. At this time, the locking mechanism 300 is in the unlocked state, and the blade 400 can be taken out from the installation position 110; the above structure is very convenient for disassembling and assembling the blade 400, and the disassembly and assembly efficiency is high. Moreover, compared with the method of tightening one by one with screws, the scraper device of the convex part is safer when replacing the blade 400.

[0030] See also Figure 2 and Figure 3 In this embodiment, the scraper body 100 is in the shape of a long strip, and the scraper body 100 is provided with a mounting position 110, a blade 400 and a locking mechanism 300 on both sides along its length direction. The mounting position 110 is a positioning groove, the depth of the positioning groove is consistent with the thickness of the blade 400, and the extension dimension of the positioning groove is consistent with the length dimension of the blade 400. The bottom of the positioning groove is tilted to facilitate the removal and placement of the blade 400. The scraper body 100 has a liquid storage chamber located between the two blades 400, and the liquid storage chamber is connected to a pipeline component that can drive the circulation of glue to avoid gel phenomenon.

[0031] See also Figure 2 and Figure 3In some embodiments of the present invention, the movable support portion 210 is in the shape of an elongated strip. The movable support portion 210 is disposed in the middle portion of the elongated pressure plate 200 in the width direction and extends along the length direction of the elongated pressure plate 200. The scraper body 100 is provided with a movable groove 120 adapted to the movable support portion 210. The locking mechanism 300 is used to push the elongated pressure plate 200 away from one side edge of the mounting position 110 so that the elongated pressure plate 200 and the scraper body 100 clamp the blade 400. It should be noted that when the locking mechanism 300 drives the elongated pressure plate 200 to rotate and then be fixed, the elongated pressure plate 200 can be regarded as a lever, the movable support portion 210 being the fulcrum of the lever, and the movable groove 120 allowing the movable support portion 210 to rotate relative to the blade 400. At the same time, it can limit the displacement of the movable support portion 210, which would result in an inability to stably press the blade 400.

[0032] See also Figure 2 and Figure 3 In some embodiments of the present invention, a side edge of the elongated pressure plate 200, away from the mounting position 110, is provided with a side extension plate 220 extending along the length of the elongated pressure plate 200. The locking mechanism 300 includes a drive rod 310 rotatably mounted on the scraper body 100. The outer peripheral wall of the drive rod 310 is provided with a first surface 320 capable of pushing against the side extension plate 220 and a second surface 330 separated from the side extension plate 220. It is understood that when the blade 400 is installed, the drive rod 310 rotates until the first surface 320 abuts against the side extension plate 220, causing the elongated pressure plate 200 to rotate a certain angle around the movable support portion 210. During this process, a side edge of the elongated pressure plate 200 first abuts against the surface of the blade 400 and then undergoes elastic deformation of a certain arc, thereby providing a large elastic force for clamping the blade 400. When removing the blade 400, the drive rod 310 rotates until the first surface 320 leaves the side extension plate 220, the second surface 330 faces the side extension plate 220 and the second surface 330 does not contact the side extension plate 220. At this time, one side edge of the long pressure plate 200 leaves the blade 400 so that the blade 400 can be taken out from the gap between the long pressure plate 200 and the mounting position 110.

[0033] See also Figure 2 and Figure 3In some embodiments of the present invention, a one-way bearing 340 is provided between the drive rod 310 and the scraper body 100 to stabilize the drive rod 310 after rotation. It should be noted that the use of the one-way bearing 340 can ensure that the drive rod 310 can only rotate in the clockwise direction or only rotate in the counterclockwise direction. When the first surface 320 and the side extension plate 220 abut against each other, as long as no force is continuously applied to the drive rod 310 to rotate the drive rod 310, the angular position of the drive rod 310 can be stabilized, ensuring that the blade 400 is stably clamped. Of course, in other embodiments, a damping structure that limits the rotation of the drive rod 310 can be provided between the drive rod 310 and the scraper body 100, or a ratchet and pawl mechanism can be provided between the drive rod 310 and the scraper body 100 to stabilize the drive rod 310 after rotation to a certain angle.

[0034] See also Figure 2 and Figure 3 In some embodiments of the present invention, the first surface 320 is an arc surface arranged around the axial direction of the driving rod 310, the second surface 330 is a plane portion connected to the two ends of the arc surface, and the side extension plate 220 is parallel to the movable support portion 210; when the driving rod 310 rotates to the arc surface and is opposite to the side extension plate 220, the arc surface pushes the side extension plate 220 to move one side edge of the long pressure plate 200 closer to the installation position 110; when the driving rod 310 rotates to the plane portion and is opposite to the side extension plate 220, there is a height gap between the plane portion and the side extension plate 220. It should be noted that when the drive rod 310 rotates until the arc surface abuts the side extension plate 220, the elongated pressure plate 200 rotates a certain angle around the movable support portion 210 so that one side edge of the elongated pressure plate 200 abuts against the blade 400 and produces a certain elastic deformation. Even if the drive rod 310 is accidentally rotated by a certain angle due to external force, as long as the first surface 320 remains in contact with the side extension plate 220, the position of the elongated pressure plate 200 can be maintained. When the drive rod 310 rotates until the flat portion is opposite to the side extension plate 220, a height gap is provided between the flat portion and the side extension plate 220 so that the elongated pressure plate 200 can be rotated to release the blade 400, thereby achieving quick replacement of the blade 400. Of course, in other embodiments, the drive rod 310 can be provided with an eccentric wheel to replace the above structure. In this case, the distal end of the eccentric wheel constitutes the first surface 320, and the proximal end of the eccentric wheel constitutes the second surface 330.

[0035] See also Figure 1 and Figure 4In some embodiments of the present invention, the coating scraper device further includes a fixed base 500, on which is disposed a linear reciprocating mechanism 600 connected to the scraper body 100. The linear reciprocating mechanism 600 is used to drive the scraper body 100 to move linearly and reciprocally along its length. It should be noted that in actual coating production, some small and hard particles are present in the coating. After a long period of accumulation, these particles can accumulate at certain locations on the coating anilox roller, causing severe wear of the anilox roller. When the linear reciprocating mechanism 600 is used to drive the scraper body 100 to move linearly and reciprocally along its length, the blade 400 can be caused to reciprocate linearly relative to the length of the anilox roller, thereby preventing the accumulation of particles in the coating and extending the service life of the anilox roller and the blade 400.

[0036] See also Figure 4 In some embodiments of the present invention, the linear reciprocating mechanism 600 includes a sliding base 610 connected to the scraper body 100. A connecting rod 620 is rotatably connected to the sliding base 610. The other end of the connecting rod 620 is rotatably connected to a crank 630, which is connected to a motor 640 for driving its rotation. It will be understood that the motor 640 drives the crank 630 to rotate, and the crank 630 drives the sliding base 610 to reciprocate along the length of the scraper body 100 through the connecting rod 620. This linear reciprocating mechanism 600 provides stable operation and a high reciprocating frequency. Here, the crank 630 is a rotatably arranged eccentric shaft.

[0037] See also Figure 1 and Figure 5 In some embodiments of the present invention, to adjust the distance between the ends of the blade 400 and the coating roller, a movable seat 700 is slidably mounted on the fixed seat 500 and perpendicular to the movement direction of the linear reciprocating mechanism 600. The linear reciprocating mechanism 600 is disposed between the movable seat 700 and the scraper body 100. A displacement adjustment mechanism 800 is disposed between the movable seat 700 and the fixed seat 500 to drive the movable seat 700 to move. The displacement adjustment mechanism 800 drives the movable seat 700 to move, thereby moving the blade 400 closer to or further away from the coating roller.

[0038] See also Figure 4In some embodiments of the present invention, to guide the sliding seat 610, a guide rod 910 parallel to the sliding direction of the sliding seat 610 is provided on the movable seat 700. A guide sleeve 920 is provided between the scraper body 100 and the sliding seat 610, capable of reciprocating along the guide rod 910. A stop assembly 930 is provided between the guide sleeve 920 and the guide rod 910. The stop assembly 930 includes a waist-shaped hole provided on one of the guide sleeves 920, extending along the length of the guide sleeve 920. The guide rod 910 is provided with a stop rod extending through the waist-shaped hole. It is understood that when the sliding seat 610 reciprocates, the guide rod 910 telescopes within the guide sleeve 920, and the stop rod moves within the waist-shaped hole. Further preferably, the connecting rod 620 is configured with an adjustable length, and the stop rod can be adjusted in position on the guide rod 910, thereby limiting the reciprocating travel of the sliding seat 610 to meet specific production needs.

[0039] See also Figure 5 In some embodiments of the present invention, the displacement adjustment mechanism 800 includes a cylinder 810 connected to the movable seat 700, and the movable seat 700 is movably provided with a cross bar 820 parallel to the extension and contraction direction of the cylinder 810. A vertical screw rod 830 is rotatably provided on the movable seat 700, and the screw rod 830 is transmission-connected to a lifting block 840. One end of the cross bar 820 abuts against the fixed seat 500, and the lifting block 840 is provided with a driving inclined surface 841 abutting against the other end of the cross bar 820 on the movable seat 700. The screw rod 830 is connected to a rotating rod 860 that drives it to rotate through a reduction box 850. It should be noted that the telescopic movement of the output end of the cylinder 810 can drive the movable seat 700 to move back and forth toward the coating roller. In this embodiment, the cylinder 810 has a pre-tension on the movable seat 700 so that one end of the cross bar 820 can remain against the fixed seat 500. When the rotating rod 860 rotates, the lifting block 840 is driven to move downward after being decelerated by the reduction gear box 850, and the driving inclined surface 841 is pressed against the other end of the cross bar 820 to push the movable seat 700 to move away from the fixed seat 500. The above displacement adjustment mechanism 800 can be used to slightly adjust the position of the movable seat 700.

[0040] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A coating scraper device, characterized in that: include: A scraper body (100), wherein the scraper body (100) is provided with a mounting position (110) matching the blade (400); a long pressing plate (200) made of an elastic material, the long pressing plate (200) being provided with a movable supporting portion (210) in contact with the scraper body (100), and a side edge of the long pressing plate (200) extending along its length direction being opposite to the mounting position (110); a locking mechanism (300) provided on the scraper body (100), wherein the locking mechanism (300) is capable of driving the long pressing plate (200) to rotate around the movable support portion (210) so that an edge of the long pressing plate (200) opposite to the mounting position (110) is elastically deformed and abuts against the blade (400); The movable support portion (210) is in the shape of an elongated strip, and the movable support portion (210) is arranged in the middle of the width direction of the elongated pressing plate (200) and extends along the length direction of the elongated pressing plate (200). The scraper body (100) is provided with a movable groove (120) adapted to the movable support portion (210). The locking mechanism (300) is used to push the elongated pressing plate (200) away from one side edge of the mounting position (110) so that the elongated pressing plate (200) and the scraper body (100) clamp the blade (400). A side extension plate (220) extending along the length direction of the long pressure plate (200) is provided on an edge of one side of the long pressure plate (200) away from the mounting position (110), and the locking mechanism (300) includes a driving rod (310) rotatably provided on the scraper body (100), and an outer peripheral wall of the driving rod (310) is provided with a first surface (320) capable of pushing the side extension plate (220) and a second surface (330) separated from the side extension plate (220).

2. A coating scraper device according to claim 1, characterized in that: A one-way bearing (340) is provided between the driving rod (310) and the scraper body (100) to stabilize the driving rod (310) after rotation.

3. A coating scraper device according to claim 1, characterized in that: The first surface (320) is an arc surface arranged around the axis direction of the driving rod (310), and the second surface (330) is a plane portion connected to both ends of the arc surface, and the side extension plate (220) is parallel to the movable support portion (210); when the driving rod (310) rotates until the arc surface is opposite to the side extension plate (220), the arc surface pushes the side extension plate (220) to move one side edge of the long pressure plate (200) closer to the installation position (110); when the driving rod (310) rotates until the plane portion is opposite to the side extension plate (220), there is a height gap between the plane portion and the side extension plate (220).

4. A coating scraper device according to claim 1, characterized in that: It also includes a fixed seat (500), on which a linear reciprocating mechanism (600) connected to the scraper body (100) is provided, and the linear reciprocating mechanism (600) is used to drive the scraper body (100) to move linearly and reciprocatingly along its length direction.

5. A coating scraper device according to claim 4, characterized in that: The linear reciprocating mechanism (600) comprises a sliding seat (610) connected to the scraper body (100), a connecting rod (620) being rotatably connected to the sliding seat (610), a crank (630) being rotatably connected to the other end of the connecting rod (620), and a motor (640) being connected to the crank (630) for driving the crank (630) to rotate.

6. A coating scraper device according to claim 5, characterized in that: A movable seat (700) is slidably provided on the fixed seat (500) and is perpendicular to the movement direction of the linear reciprocating mechanism (600). The linear reciprocating mechanism (600) is provided between the movable seat (700) and the scraper body (100). A displacement adjustment mechanism (800) for driving the movable seat (700) to move is provided between the movable seat (700) and the fixed seat (500).

7. A coating scraper device according to claim 6, characterized in that: A guide rod (910) parallel to the sliding direction of the sliding seat (610) is provided on the movable seat (700), a guide sleeve (920) capable of reciprocatingly sliding along the guide rod (910) is provided between the scraper body (100) and the sliding seat (610), and a limiting assembly (930) is provided between the guide sleeve (920) and the guide rod (910).

8. The coating scraper device according to claim 6, characterized in that: The displacement adjustment mechanism (800) includes a cylinder (810) connected to the movable seat (700), a cross bar (820) movably provided on the movable seat (700) and parallel to the telescopic direction of the cylinder (810), a vertical screw rod (830) rotatably provided on the movable seat (700), and the screw rod (830) is transmission-connected to a lifting block (840), one end of the cross bar (820) abuts against the fixed seat (500), and the lifting block (840) is provided with a driving inclined surface (841) abutting against the other end of the cross bar (820) on the movable seat (700), and the screw rod (830) is connected to a rotating rod (860) for driving the screw rod (830) to rotate through a reduction box (850).

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