JPH04305264A - Coating applicator - Google Patents

Abstract

PURPOSE:To offer the coating applicator by which a coating material is applied almost uniformly and easily without dripping even on a vertical surface of an edge of workpiece. CONSTITUTION:On the upper part of a storage tank 14 where the coating material is stored, a roller 15 is arranged opposite to the vertical surface 11a of the workpiece edge 11, the roller is made rotatable, on the outer circumference of the roller 15 grooves 17 extending to the direction of the circumference are provided, and a brush-planted plate 29 with projecting pieces which fit in the grooves 17 to scrape out the coating material 13 in the grooves 17, is provided between the roller 15 and the workpiece 11. Also, in a position abutting the outer circumference of the roller 15, a reservoir 19 to temporarily store the coating material is provided, and on the side of the reservoir 19 for the coating material a supply means 24 by which the coating material 13 is supplied from the storage tank 14 into the reservoir 19 is provided.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is a coating device suitable for applying adhesive to the vertical end surface of a workpiece, particularly when applying an adhesive to the vertical end surface of a horizontally placed wooden panel. It is related to.

0002

[Prior Art] Conventionally, when applying adhesive to the end surface of a wooden panel, the wooden panel is placed vertically, the end surface of the panel is placed horizontally, and the horizontal end surface is coated with a brush, and then a roll coater is applied. A method of applying adhesive using methods such as the following is adopted.

[0003] However, since it is difficult to place large panels vertically, it is desired to apply an adhesive to the vertical end surface of the panels while the panels are placed horizontally.

FIG. 5 shows a conventional method of applying adhesive 2 to the vertical end surface 1a of the wooden panel 1 placed horizontally.

That is, a cylindrical roller 3 is arranged with its cylindrical shaft 3a vertically disposed and its outer circumferential surface facing the vertical end surface 1a of the panel 1, and the outer circumferential surface of the roller 3 is After supplying the adhesive 2 to the roller 3
is manually rotated horizontally about its cylindrical shaft 3a. As a result, the adhesive 2 is applied to the vertical end surface 1a of the panel 1.

[0006]

[Problems to be Solved by the Invention] However, the conventional method has the following problems.

That is, the work of supplying the adhesive 2 to the outer circumferential surface of the roller 3 is time-consuming, and the amount of adhesive 2 supplied varies from person to person and is uneven. If the amount of the adhesive 2 supplied to the outer circumferential surface of the roller 3 is small, uneven application will occur when the adhesive 2 is applied to the vertical end surface 1a of the panel 1. In addition, if the supply amount of adhesive 2 is increased in an attempt to avoid such uneven application, the excess portion may drip, contaminating the surrounding work site, or causing adhesive 2 to drip.
The economic burden caused by wasteful use of resources becomes a problem.

The present invention has been made in view of the above circumstances, and it automatically supplies a certain amount of coating agent (adhesive) to the outer peripheral surface of the roller and
It is an object of the present invention to provide a coating device capable of eliminating uneven application of a coating agent (adhesive) to the vertical end surface of a wood and preventing the coating agent (adhesive) from dripping.

[0009]

[Means for Solving the Problems] In the present invention, a cylindrical roller is disposed in the upper part of a storage tank for storing a coating agent, the axis of which is arranged in the vertical direction, and the outer circumferential surface of the roller serves as the material to be coated. The roller is provided facing the vertical end surface of the workpiece, and is capable of horizontal rotation around its axis by a drive device, and has an annular groove extending in the circumferential direction on its outer peripheral surface. A plurality of brush plates are provided between the outer circumferential surface of the roller and the vertical end surface of the workpiece, and a brush plate having a convex piece that fits into a groove on the outer circumferential surface of the roller is provided. is installed so as to scrape out the coating agent in the groove while sliding along the groove as the roller rotates, and the outer circumferential surface of the roller on the opposite side to the side facing the workpiece is provided with a coating agent. A coating agent reservoir for temporarily storing a coating agent between the outer circumferential surface and the coating agent reservoir is formed so that the width becomes gradually narrower from the top to the bottom, and the storage tank has an upper part of the coating agent reservoir. The solution is that a supply means for supplying the coating agent into the coating agent reservoir is provided.

0010

[Operation] According to the coating device of the present invention, the coating agent in the storage tank is automatically supplied to the coating agent reservoir by the supply means, and the roller rotating while in contact with the coating agent in the coating agent reservoir , a certain amount of coating agent is automatically supplied to the outer peripheral surface of the roller. Moreover, since the outer peripheral surface of the roller is provided with a groove extending in the circumferential direction, the coating agent enters the groove and is prevented from dripping. Furthermore, since the coating agent that has entered the groove is scraped out by the convex piece of the brush plate, it is reliably applied to the vertical end surface of the workpiece.
Problems such as uneven coating and dripping are avoided.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The coating apparatus of the present invention will be explained below with reference to FIGS. 1 to 4.

FIG. 1 is a side view showing an embodiment of the coating apparatus of the present invention, and FIG. 2 is a plan view of this coating apparatus. In this example, a wooden panel (hereinafter simply referred to as a panel) is used as a workpiece to be coated with a coating agent.
We will also explain a coating device that is used when an adhesive is used as the coating agent.

Reference numeral 11 in the figure indicates a horizontally placed panel, which is horizontally placed along a conveyance path (not shown) determined by guide portions 12, 12 (in the front direction in FIG. 1, and along the arrow in FIG. 2). direction).

A storage tank 14 for storing adhesive 13 is installed on the side of the panel 11 being transported.

[0015] At the upper part of this storage tank 15 and the panel 1
At a position close to the vertical end surface 11a of the panel 11, a substantially cylindrical roller 15 has its cylindrical shaft 15a directed in the vertical direction, and its outer peripheral surface is aligned with the vertical end surface 11a of the panel 11.
are placed facing each other. The cylindrical shaft 15a of this roller 15 is connected to a motor (drive device) 16,
The motor 16 allows the roller 15 to rotate at a constant speed about the vertical axis 15a.

A plurality of annular grooves 17, 17, . . . extending in the direction of the outer circumference are formed on the outer peripheral surface of the roller 15 at predetermined intervals in the vertical direction.

Furthermore, a partition plate 18 is provided on the outer peripheral surface of the roller 15 on the opposite side to the side facing the vertical end surface 11a of the panel 11, with a predetermined interval therebetween. . This partition plate 18 has a substantially semicircular pyramid shape whose diameter gradually decreases from top to bottom, and its open side is connected to the roller 1.
It is provided facing the outer peripheral surface of 5. As a result, the space between the partition plate 18 and the outer peripheral surface of the roller 15 becomes an adhesive reservoir (coating material reservoir) in which the adhesive 13 is temporarily stored.
It is said to be 19. Note that a slight gap 19a is ensured between the partition plate 18 and the outer peripheral surface of the roller 15, and the roller 15 contacts the partition plate 18 even when the adhesive 13 is supplied to the outer peripheral surface of the roller 15. It is constructed so that it can rotate smoothly without any friction. Further, a predetermined gap 19b is also secured between the lower part of the partition plate 18 and the outer peripheral surface of the roller 15.

This adhesive reservoir 19 includes the adhesive reservoir 1
A liquid level gauge 20 is provided for adjusting the amount of adhesive 13 stored in the adhesive 9 so that it is always almost completely filled. The liquid level gauge 20 measures the adhesive 13 in the adhesive reservoir 19.
a float 21 floating on the top surface of the float 21;
A connecting rod 22 is connected to the upper part of the float 21 and can be vertically rotated in conjunction with the vertical movement of the float 21. Above this connecting rod 22, there is an end that rises when the connecting rod 22 rotates. A switch 23 is arranged so as to make contact with the switch 23. This switch 23 is connected to a control section (not shown) for adjusting the amount of adhesive 13 in this adhesive reservoir 19 so that it is always filled to the full. The switch 23 and the control section are configured to be energized.

Further, the storage tank 14 is provided with a bucket (supply means) 24 extending from the storage tank 14 to the upper part of the adhesive reservoir 19 for supplying the adhesive 13 into the adhesive reservoir 19. The bucket 24 connects a first roll 25 disposed in the storage tank 14, a second roll 26 disposed above the adhesive reservoir 19, and the first and second rolls 25, 26. It is composed of a rotating belt 27 and a plurality of trays 28, 28, . This bucket (supply means) 24 is connected to the control section (not shown), and the drive of the bucket 24 and the rotational speed of the belt 27 are controlled based on instructions from the control section. ing.

Furthermore, the outer peripheral surface of the roller 15 and the panel 1
The adhesive 1 that has entered into the grooves 17, 17 formed on the outer circumferential surface of the roller 15 is between the vertical end surface 11a of the roller
A brush plate 29 for scraping out the 3 is provided. As shown in FIGS. 3 and 4, this brush plate 29 has a plate spring shape in which one side of a rectangular plate made of stainless steel or the like is gently curved, and the side end near the curved part 29a has a flat spring shape. ,
A plurality of convex pieces 30, 30, . . ., which fit into the grooves 17, 17, . Then, the outer surface of the curved portion 29a is directed toward the vertical end surface 11a of the panel 11, and the other side end portion is the side portion of the roller 15 (the side portion corresponding to the upstream side with respect to the conveyance direction of the panel). is fixed. Note that the brush plate 29 is similar to the panel 11.
When it is not on the conveyance path, it is set to be biased in the direction of conveyance and placed at a position away from the rollers 15, as shown by the two-dot chain line in FIG.

Next, the operation of the coating device 10 of this embodiment will be explained.

Inside the storage tank 14 and adhesive reservoir 19,
The panel 11 filled with the adhesive 13 is transported along the transport path, and the motor 16 is driven to rotate the roller 15 in a fixed direction (clockwise in FIGS. 1 and 2).

When the roller 15 rotates, the adhesive pool 19
The adhesive 13 inside the groove 1 provided on the outer peripheral surface of the roller 15
7, 17... are supplied to the outer circumferential surface of the roller 15 so as to enter therein.

As the roller 15 rotates, the roller 15
The adhesive 13 supplied to the outer peripheral surface of the panel 11 comes into contact with the vertical end surface 11a of the panel 11 being conveyed, and this vertical end surface 1
1a. At this time, the brush plate 29 is sandwiched between the outer peripheral surface of the roller 15 and the vertical end surface 11a of the panel 11, so that the convex pieces 30, 30... provided on the side ends of the brush plate 29 are inserted into the roller. 15 fits into the grooves 17, 17... on the outer peripheral surface. As the roller 15 rotates, it slides inside the grooves 17, 17, while scraping out the adhesive 13 in the grooves. As a result, the adhesive 13 is forcibly applied to the vertical end surface 11a of the panel 11.

However, the vertical end surface 11a of the panel 11
As the application of adhesive 13 progresses, the adhesive pool 19
When the amount of adhesive 13 inside decreases, the liquid level of adhesive 13 lowers and float 21 lowers. Then float 2
The end of the connecting rod 22 connected to switch 1 is raised and the switch 2
Contact 3. Then, the control section operates and sends an instruction to the bucket (supplying means) 24, and the bucket 24 is driven. That is, the belt 27 is connected to the first and second rolls 25.
, 26 at a constant speed. The adhesive 1 in the storage tank 14 is removed by the trays 28, 28... provided on the belt 27.
3 are successively supplied into the adhesive reservoir 19. In this way, the adhesive 13 in the adhesive reservoir 19 is always kept fully filled.

Conversely, the adhesive 1 in the adhesive reservoir 19
When the amount of adhesive 3 increases and overflows from the upper part of the adhesive reservoir 19, it overflows into the storage tank 14 and is stored.

In this way, according to the application device 10 of this embodiment, as described above, it is possible to apply the adhesive 13 to the vertical end surface 11a of the panel 11 while conveying it in a horizontal position. It is. Therefore, large panels etc.
It can be suitably adopted for panels that are difficult to place vertically.

Further, in this coating device 10, by providing an adhesive reservoir 19 on the side of the roller 15 for temporarily storing the adhesive 13, a constant amount of adhesive is automatically applied to the outer peripheral surface of the roller 15. amount of adhesive 13 can be supplied. Also, since this coating agent reservoir 19 is formed by a substantially semicircular cone-shaped partition plate 18 whose diameter gradually decreases from top to bottom, the amount of adhesive 13 is always adjusted so that it is larger at the top and smaller at the bottom. This means that it has been done. On the other hand, since the adhesive 13 has its own weight and falls downward in its natural state, taking these circumstances into consideration, as a result, a substantially constant amount of the adhesive 13 is supplied to the outer peripheral surface of the roller 15 from top to bottom, There is no uneven supply.

Further, a plurality of grooves 17, 17... are formed on the outer peripheral surface of the roller 15, and the adhesive 13 is applied to the grooves 1.
7, 17..., so that the adhesive 13 is prevented from dripping from the outer circumferential surface and is held almost evenly over the entire outer circumferential surface.

Furthermore, the convex pieces 3 that fit into the grooves 17, 17...
0, 30... for scraping out the adhesive 13 that has entered into the grooves 17, 17... The adhesive 13 scraped out is forcibly applied, and reliable application is achieved.

Depending on the amount of the adhesive 13 in the adhesive reservoir 19, when the amount is small, the liquid level gauge 20 is activated and the bucket (supply means) 24 is driven by the control section to fill the storage tank 14. of adhesive 13 is supplied into the adhesive reservoir 19, and when the amount is large, it overflows into the storage tank 14, so that the adhesive reservoir 19 is always full of adhesive 13. considered to be in a fulfilled state. Therefore, the entire outer peripheral surface of the roller 15 is always covered with the adhesive 13 without drying out. Therefore, as a result, uniform coating without uneven coating is performed even on the vertical end surface of the panel.

Furthermore, since an appropriate gap 19a is provided between the roller 15 and the partition plate 18, the roller 15 can rotate smoothly without contacting the partition plate 18. . In addition, since a gap 19b is secured at the bottom of the adhesive reservoir 19, the adhesive reservoir 19
The adhesive 13 inside is gradually removed from the storage tank 1 through this gap 19b.
4 and is again supplied into the adhesive reservoir 19 by the bucket (supplying means) 24, thereby being recycled and used.

Note that the coating apparatus of the present invention is not limited to the above-mentioned embodiments, and the specific structural requirements such as the shape, dimensions, and materials of each member can be changed as appropriate in implementation.

For example, in the above-mentioned embodiment, the wooden panel 11 is used as the workpiece to be coated with the coating agent, and the coating apparatus is used when the adhesive 13 is used as the coating agent. Although described above, it is also possible to use something other than the panel 11 as the workpiece, and it is also possible to use something other than the adhesive 13 as the coating agent.

[0035]

Effects of the Invention As explained above, according to the coating device of the present invention, the coating agent can be applied almost uniformly to the vertical wood end surface without dripping, so It can also be suitably used for panels that are difficult to place.

Furthermore, since a coating agent reservoir is provided on the side of the roller that applies the coating agent to the workpiece to temporarily store the coating agent, a certain amount of coating agent is automatically applied to the outer peripheral surface of the roller. It is possible to save time and effort and eliminate uneven supply. Furthermore, since the coating agent reservoir is automatically supplied with coating agent from the storage tank by the supply means, the coating agent reservoir is always filled with a certain amount of coating agent, and the outer circumference of the roller is The coating agent can always be supplied to the surface in an optimal state. Moreover, since the outer peripheral surface of the roller is provided with a groove extending in the circumferential direction, the coating agent enters the groove and is prevented from dripping. Further, since the coating agent that has entered the groove is scraped out by the convex piece of the brush plate, it is reliably applied to the vertical end surface of the workpiece, and problems such as uneven coating and dripping are avoided.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of a coating device of the present invention.

FIG. 2 is a plan view of the coating device.

FIG. 3 is a perspective view showing the configuration of a roller, a coating agent reservoir, and a brush plate used in the coating device.

FIG. 4 is a side sectional view showing the configuration of the brush plate.

FIG. 5 is a side view showing an example of a conventional coating device.

[Explanation of symbols]

10 Coating device 11 Panel (work) 11a Vertical end surface 13 Adhesive (coating agent) 14 Storage tank 15 Roller 15a Cylindrical shaft (shaft) 16 Motor (drive device) 17 Groove 19 Adhesive pool (coating agent pool) 24 Bucket (supply means) 29 Brush board 30 Convex piece

Claims (1)

[Claims] [Claim 1] A cylindrical roller is arranged in the upper part of the storage tank for storing the coating agent, and the axis thereof is arranged in the vertical direction.
The roller is provided with its outer circumferential surface facing the vertical end surface of the workpiece to be coated, and the roller can be rotated horizontally about its axis by a drive device, and its outer circumferential surface is is provided with a plurality of annular grooves extending in the circumferential direction, and has a convex piece that fits into the groove on the outer circumferential surface of the roller between the outer circumferential surface of the roller and the vertical end surface of the workpiece. A brush plate is provided, and a convex piece thereof is installed so as to scrape out the coating material in the groove while sliding along the groove as the roller rotates, and the side of the roller facing the workpiece is provided with a brush plate. A coating agent reservoir is formed on the outer circumferential surface opposite to the outer circumferential surface to temporarily store the coating agent between the outer circumferential surface and the coating agent reservoir, the width of which becomes gradually narrower from top to bottom. . A coating device, further comprising a supply means extending from the storage tank to an upper part of the coating agent reservoir and supplying the coating agent into the coating agent reservoir.