WO2024117534A1 - Coating rake - Google Patents

Abstract

A coating rake according to the present invention includes: a frame; a shaft of which the lower end is coupled to the upper side of the frame; a blade arranged on the lower side of the frame and installed to be angle-adjustable about an axis perpendicular to the ground, with respect to the frame; and wheels coupled to two sides of the frame.

Description

Rake for painting

The present invention relates to a rake for painting.

Figure 1 is a schematic diagram of a conventional painting rake (commonly referred to as 'leggy') 10. Referring to FIG. 1, a conventional painting rake 10 has a rubber or steel blade 11 for spreading paint and a shaft 12 for gripping by an operator.

Since the coating film thickness of the conventional painting rake 10 varies depending on the force applied by the operator, there is a problem in that the painting quality is greatly affected by the operator's skill level. Additionally, automation has been recognized as difficult because workers work repeatedly while visually spreading the paint.

The purpose of the present invention is to provide a painting rake that can easily apply paint.

The painting rake according to the present invention includes a frame, a shaft whose lower end is coupled to the upper side of the frame, a blade disposed on the lower side of the frame and installed at an angle adjustable around an axis perpendicular to the ground with respect to the frame, and the frame. Includes wheels coupled to both ends of.

Additionally, the shaft may be installed to adjust its angle around an axis that is horizontal to the ground and perpendicular to the direction of movement of the frame.

In addition, the shaft is formed in a pipe shape, and includes a first connection member extending along the inside of the shaft, a second connection member coupled to the blade, and a universal connection member connecting the first connection member and the second connection member to each other. It is disposed on the joint and the upper end of the shaft and may include an adjustment knob coupled to the first connection member.

Additionally, the wheel may be installed to be height-adjustable with respect to the frame, a worm gear may be provided on a side of the frame, and a rack gear may be provided on a side of the wheel to engage the worm gear.

Additionally, a plurality of wheels may be provided on both ends of the frame.

In addition, it may further include a detection device installed at the rear end of the frame to measure the thickness, color, or appearance of the painted film.

In addition, the detection device is a thickness measuring wheel, which extends spirally from one of a disk that can roll in vertical contact with the ground and an edge of the disk toward the center of the disk, protrudes outward, and extends in the longitudinal direction. It may include a spiral protrusion along which a scale is formed.

The painting rake according to the present invention moves using wheels coupled to both ends of the frame and spreads the paint using blades, making it easier to paint than a conventional painting rake, and can be mounted on a robot to realize automation. You can.

Additionally, by adjusting the angle of the blade, the direction in which the paint spreads can be guided, thereby improving workability.

Additionally, workability can be further improved by adjusting the angle of the shaft.

Additionally, the coating film thickness can be varied by adjusting the height of the wheel.

In addition, the actual painted film thickness, color, appearance, etc. can be objectively measured through a detection device separately attached to the frame.

Figure 1 is a schematic diagram of a conventional painting rake.

Figure 2 is a schematic diagram of a painting rake according to an embodiment of the present invention.

Figure 3 shows the height of the wheel in Figure 2 being adjusted.

Figure 4 is a side view of a painting rake according to an embodiment of the present invention.

Figure 5 shows the angle of the shaft in Figure 4 adjusted.

Figure 6 is a plan view of a painting rake according to an embodiment of the present invention.

Figure 7 shows the angle of the blade in Figure 6 adjusted.

Figure 8 shows as an example means for adjusting the height of a wheel in a painting rake according to an embodiment of the present invention.

Figure 9 shows as an example other means for adjusting the height of the wheel in a painting rake according to an embodiment of the present invention.

Figure 10 shows a method of working with the blade rotated using a painting rake according to an embodiment of the present invention, and only the blade is shown for convenience.

Figure 11 is a schematic diagram of a painting rake according to another embodiment of the present invention.

Figure 12 is a schematic diagram of a painting rake according to another embodiment of the present invention.

Figure 13 shows a thickness measuring wheel that can be used as a detection device in a painting rake according to another embodiment of the present invention.

Figure 14 illustrates the evaluation criteria for the degree of flattening when a 3D scanning device is used as a detection device in a painting rake according to another embodiment of the present invention.

With reference to the drawings, the painting rakes 100, 200, and 300 according to each embodiment of the present invention will be described in detail.

Figure 2 is a schematic diagram of the painting rake 100 according to an embodiment of the present invention, and Figure 3 shows the height of the wheel 140 in Figure 2 adjusted. In addition, Figure 4 is a side view of the painting rake 100 according to an embodiment of the present invention, and Figure 5 shows the angle of the shaft 120 in Figure 4 adjusted. In addition, Figure 6 is a plan view of the painting rake 100 according to an embodiment of the present invention, and Figure 7 shows the angle of the blade 130 in Figure 6 adjusted. In addition, Figure 8 shows as an example means for adjusting the height of the wheel 140 in the painting rake 100 according to an embodiment of the present invention, and Figure 9 shows a painting rake according to an embodiment of the present invention. Other means for adjusting the height of the wheel 140' in rake are shown as examples.

2 to 9, a painting rake 100 according to an embodiment of the present invention includes a frame 110, a shaft 120, a blade 130, and a wheel 140.

The frame 110 is a part for installing the shaft 120, blade 130, wheel 140, etc., and is formed, for example, in a 'ㄷ' shape rotated 90° clockwise, with the shaft 120 on the upper side. The lower end may be coupled, the blade 130 may be disposed on the lower side, and wheels 140 may be coupled to both ends.

The shaft 120 becomes a part for the worker to grip when the painting work is performed manually by the operator, and becomes a part to be mounted on the robot when the painting work is performed automatically by a robot.

The lower end of the shaft 120 is coupled to the upper side of the frame 110. This shaft 120 can be installed to adjust the angle around an axis horizontal to the ground and perpendicular to the direction of movement (A) (based on the drawing, an axis parallel to the X axis) with respect to the frame 110. there is. Therefore, as shown in FIG. 5, workability can be improved by leaving the frame 110 and the blade 130 still and only adjusting the angle of the shaft 120 back and forth as necessary. For reference, 'direction of movement (A)' refers to the direction in which the painting rake 100 naturally moves as the wheel 140 rolls, and refers to the direction parallel to the Y axis based on the drawing.

Meanwhile, the shaft 120 is installed so that the angle of the frame 110 can be adjusted around an axis that is horizontal to the ground and parallel to the direction of movement (A) (based on the drawing, an axis parallel to the Y axis). However, if the angle of the shaft 120 is variable in all directions, workability may be impaired, so the shaft 120 is horizontal to the ground with respect to the frame 110 and moves in the direction (A). It is desirable to be restrained so that the angle cannot be adjusted around an axis parallel to .

The blade 130 is used to spread the paint evenly, is made of rubber or steel, and is oriented from the frame 110 toward the ground. These blades 130 are installed to be angle-adjustable about an axis perpendicular to the ground (based on the drawing, an axis parallel to the Z axis) with respect to the frame 110.

For the above operation, the painting rake 100 according to an embodiment of the present invention includes a first connection member 151, a second connection member 152, a universal joint 153, an adjustment knob 154, and a fixing means ( 155) may be included.

In this case, the shaft 120 is formed in a pipe shape, and the first connection member 151 extends straight along the inside of the shaft 120.

The second connection member 152 is coupled to the blade 130. More specifically, the second connecting member 152 is formed, for example, in a 'ㅗ' shape, the lower side is attached to the blade 130, and the upper end is oriented perpendicular to the ground and is attached to the lower end of the first connecting member 151. They can be placed next to each other. It is advantageous for the second connecting member 152 to have a relatively large load so that the blade 130 can more effectively press and spread the paint.

The universal joint 153 is disposed between the lower end of the first connection member 151 and the upper end of the second connection member 152 and connects them to each other. Accordingly, by the universal joint 153, the first connection member 151 is connected not only when the first connection member 151 is oriented perpendicular to the ground as shown in FIG. 4 but also when it is oriented obliquely to the ground as shown in FIG. 5. As the first connection member 151 rotates about an axis parallel to the longitudinal direction, the second connection member 152 may rotate about an axis perpendicular to the ground.

The adjustment knob 154 is disposed on the top of the shaft 120 and is coupled to the top of the first connection member 151. Accordingly, the user can rotate the first connection member 151, the second connection member 152, and the blade 130 by rotating the adjustment knob 154.

The fixing means 155 serves to fix the adjustment knob 154 so that it does not rotate arbitrarily. As an example purely for convenience of understanding, the fixing means 155 may be provided as a fixing pin. In this case, several holes are formed along the circumferential direction at the top of the shaft 120, and a hole is formed in the adjustment knob 154 to correspond to one of the holes, so that the fixing means (fixing pin) 155 By being inserted together into one of the holes in the shaft 120 and the hole in the adjustment knob 154, the adjustment knob 154 can be fixed so that it does not rotate with respect to the shaft 120. Of course, as long as the fixing means 155 can properly fix the adjustment knob 154, the fixing means 155 may be provided in other configurations.

By adjusting the angle of the blade 130 in this way, the direction in which the paint spreads can be guided when the paint is spread. For example, when the blade 130 is oriented perpendicular to the moving direction (A) as shown in FIG. 6, when the painting rake 100 moves in the moving direction (A), the paint is applied to the blade 130. It can be pushed and spread to both sides. On the other hand, when the blade 130 is oriented obliquely to face the right as shown in FIG. 7, when the painting rake 100 moves in the moving direction A, the paint spreads overall to the right rather than spreading to the left. It can lead to it spreading. Therefore, for example, when working sequentially from the left area to the right area in a specific work area, workability is further improved by encouraging the paint to spread to the right area rather than spreading back to the left area where work has already been completed. It can be done (see Figure 10).

When the blade 130 is oriented at an angle, a guard (not shown) may be provided between the lower surface of the frame 110 and the top of the blade 130 to maintain the left and right balance of the blade 130.

Wheels 140 are coupled to both ends of frame 110.

The wheel 140 is preferably formed as narrow as possible so as not to damage the surface when passing over the coating film. For example, the wheel 140 may be formed in a disk shape. Additionally, in order to further reduce the contact area with the coating film, the wheel 140 may be formed in a spiked wheel shape, for example.

This wheel 140 is not particularly limited as long as it is installed to be height-adjustable with respect to the frame 110, but for example, as shown in FIG. 8, the wheel 140 may be connected to the height adjustment unit 141. there is. The height adjustment unit 141 is connected to the frame 110 to adjust the height. More specifically, worm gears 142 are installed perpendicular to the ground on both sides of the frame 110, and a rack gear 143 is connected to them. The rack gear 143 is directly connected to the height adjustment unit 141, and the knob 144 connected to the worm gear 142 is adjusted to move the rack gear 143 and the height adjustment unit 141 up and down to adjust the wheel. You can set the height of (140). At this time, the height adjustment unit 141 moves stably vertically along the inner rail of the frame 110, and when located at the bottom of the frame 110, the scale on the frame 110 starts from 0 and the rack gear 143 ) is marked with a scale for each distance it moves vertically, so you can check its position. The scale may be marked on the frame 110, and may be directly connected to the height adjustment unit 141 and read according to the position of the rack gear 143.

As another example, as shown in FIG. 9, the frame 110' includes a first groove 111' extending vertically and a second groove extending laterally at a specific height from the first groove 111' ( 112') is formed (for reference, in FIG. 9, the first and second grooves 111' and 112' are indicated with broken lines so that they can be distinguished from other components), and the height of the wheel 140' The adjustment unit 141' may be formed with a protrusion 142' that is movably received within the first and second grooves 111' and 112' of the frame 110'. Therefore, the height of the wheel 140' can be adjusted depending on what height the protrusion 142' is located in the second groove 112' (in the case of FIG. 9, the protrusion 142' is located at the lowest located in the second groove 112'). At this time, the first groove 111' serves as a passage for the protrusion 142' to move from one second groove 112' to the other second groove 112'. Furthermore, in a state where the protrusion 142' is located in a specific second groove 112', in order to prevent unintentional departure from that position during use, the second groove 112' is located in the first groove 111. '), it extends laterally and then bends upward to extend some further. For example, the second groove 112' may be formed in a '┘' shape. Accordingly, it is possible to prevent the protrusion 142' from being caught on an upwardly bent portion of the second groove 112' and unintentionally leaving its position during use. In addition, the protrusion 142' has an end inserted through the first and second grooves 111' and 112' so as not to deviate from the first and second grooves 111' and 112'. It is desirable to have a larger diameter than the grooves 111' and 112'.

Adjusting the height of the wheel 140 ultimately means adjusting the height of the blade 130. For example, as the wheel 140 is positioned relatively lower than the frame 110 as shown in FIG. 2, the distance between the ground and the blade 130 increases, thereby increasing the film thickness, and the wheel 140 As shown in FIG. 3, the closer it is located to the upper part of the frame 110, the smaller the distance between the ground and the blade 130 becomes, allowing the coating film thickness to be reduced.

Figure 11 is a schematic diagram of a painting rake 200 according to another embodiment of the present invention.

In the case of the painting rake 100 according to an embodiment of the present invention, if the wheels 140 are coupled to each end of the frame 110, the painting rake 200 according to another embodiment of the present invention is a wheel The difference is that a plurality of 240s are provided at both ends of the frame 110. Accordingly, the frame 110 and the blade 130 can be supported more stably to prevent them from unintentionally tilting back and forth, and the variation in thickness during painting can also be reduced.

The remaining configuration of the painting rake 200 according to another embodiment of the present invention is substantially the same as that of the painting rake 100 according to an embodiment of the present invention, or those skilled in the art will naturally change it in response to the above-mentioned differences. Since this corresponds to the expected level, repeated explanations regarding this will be omitted.

Figure 12 is a schematic diagram of a painting rake 300 according to another embodiment of the present invention.

Referring to Figure 12, when compared to the painting rake 100 according to another embodiment of the present invention, the painting rake 300 according to another embodiment of the present invention further includes a detection device 360. There is a difference. The rest of the configuration is substantially the same as the painting rake 100 according to an embodiment of the present invention, or is expected to be changed in response to the difference by those skilled in the art, so repetitive description thereof will be omitted, and hereinafter. In , only the detection device 360 is explained.

The detection device 360 is detachably connected to the rear end of the frame 110 in the direction of movement (A), for example, through a holder, and can acquire information on the thickness, color, and appearance of the area that has actually been painted. .

For example, the detection device 360 may be a thickness measurement wheel 360 as shown in FIG. 13 . The thickness measuring wheel 360 is in contact with the ground perpendicularly and is measured from one of the disk 361 and the edge of the disk 361, which can roll together as the painting rake 300 moves in the moving direction (A). It may include a spiral protrusion 362 that extends spirally toward the center of 361, protrudes outward, and has a scale formed along its extending longitudinal direction. Therefore, the thickness of the coating film can be actually measured by the degree to which the coating material is applied to the spiral protrusion 362 as the disk 361 rolls over the coating film. At this time, since the protrusion 362 is formed in a spiral shape, it is possible to form a detailed scale and measure the thickness compared to the case where the protrusion 362 is formed in a straight line from one of the edges of the disk 361 toward the center of the disk 361. .

As a preferred example, the thickness measurement wheel 360 is an Archimedes spiral wheel (FIG. 13) whose distance from the origin increases uniformly with each rotation, thereby enabling more precise moisture film measurement.

Additionally, the detection device 360 may be, for example, a non-contact infrared thickness gauge.

Additionally, the detection device 360 may be, for example, a non-contact color meter capable of measuring color data.

In addition, the detection device 360 may be, for example, a 3D scanning device that obtains appearance information and measures the degree of surface difference to provide a degree of flattening (leveling), which is a high appearance standard. At this time, work quality can be managed by measuring the work surface by continuously photographing the surface of the coating film using the panoramic measurement method and evaluating it based on the standard grade as shown in Figure 14 (better from Grade 1 to Grade 5).

The painting rakes 100, 200, and 300 described above are only one of the painting rakes according to various embodiments of the present invention. The technical idea of the present invention is not limited to the above embodiments, and, as stated in the claims, includes all modifications that can be easily made by a person skilled in the art to which the present invention pertains.

Description of the sign

100, 200, 300: Rake for painting

110: frame

120: shaft

130: blade

140, 240: Wheel

141: Height adjustment unit

142: worm gear

143: rack gear

144: knob

151: first connection member

152: second connection member

153: Universal joint

154: Control knob

155: fixing means

360: Measuring device

Claims (7)

frame, A shaft whose lower end is coupled to the upper side of the frame, A blade disposed on the lower side of the frame and installed to be angle-adjustable about an axis perpendicular to the ground with respect to the frame A painting rake including wheels coupled to both ends of the frame. According to paragraph 1, The shaft is a painting rake installed to enable angle adjustment around an axis that is horizontal to the ground and perpendicular to the direction of movement with respect to the frame. According to paragraph 1, The shaft is formed in a pipe shape, A first connecting member extending along the interior of the shaft, A second connection member coupled to the blade, A universal joint connecting the first connecting member and the second connecting member to each other, and A painting rake disposed on an upper end of the shaft and including an adjustment knob coupled to the first connection member. According to paragraph 1, The wheel is installed to be height adjustable with respect to the frame, A worm gear is provided on the frame side, A painting rake in which a rack gear is provided on the wheel side and engages with the worm gear. According to paragraph 1, The wheel is a painting rake provided in plural numbers at both ends of the frame. According to paragraph 1, A painting rake further comprising a detection device installed at the rear end of the frame to measure the thickness, color, or appearance of the painted film. According to clause 6, The detection device is a thickness measuring wheel, A disk that can roll in vertical contact with the ground and A painting rake including a spiral protrusion extending spirally from one of the edges of the disk toward the center of the disk, protruding outward, and having a scale formed along the extending longitudinal direction.

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