Painting equipment

Abstract

To provide a coating apparatus which achieves downsizing of the entire part to allow moving of the apparatus and paint work to be performed only by one worker, can prevent scattering of spray dust by providing an air curtain or a suction skirt formed by a suction port of a suction duct in addition to a dust collector, and enables the worker to replace a clogged filter while continuing work without interruption.SOLUTION: A coating apparatus 30 is formed by a dolly 50 in which wheels 43 are provided at a lower part. A paint chamber 34 is formed at a side of a body frame 51 of the dolly 50 and a vertical arm 42 is provided at the body frame 51 to support a spray gun 33 for spraying a paint in the paint chamber 34. A periphery of the paint chamber 34 is enclosed by a transparent sheet or a resin plate 46 and a lower opening is enclosed by an air curtain device 32. An air filter 35 provided at a dust collector 36 which captures spray dust from the paint chamber 34 is a roll filter which is moved by a winding motor 45.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a coating device that prevents paint from scattering when spraying a heat-shielding paint or other paint onto a road surface. [Background technology]

[0002] For example, when applying heat-shielding paint to road surfaces, a sprayer equipped with a hose with a spray gun (painting gun) at the end is used, but the paint sprayed from the spray gun bounces back and scatters, so it is necessary to prevent this scattering.

[0003] The following patent document proposes and has been patented a protective basket for preventing the scattering of heat-shielding paint equipped with a dust collector, which is lightweight and easy to operate, and which can prevent paint from scattering as much as possible when spraying heat-shielding paint onto road surfaces by securing the work position without impeding the workability of the spray painting, and which can minimize leakage from the inside to the outside. [Patent Document 1] Patent No. 6185545

[0004] As shown in FIG. 18, the scattering prevention cage 1 is formed as a housing by being framed with an aluminum alloy frame 6, and casters 8 for easy movement are provided at the bottom.

[0005] A space 9 for an operator to stand is provided in the center of the housing, and a painting work space 11 is formed on either the front or rear side of the housing (the rear side in the drawing) by covering the frame surface of the aluminum alloy frame 6 with nonwoven fabric 10.

[0006] The rear end of the housing is made up of an aluminum alloy frame 6 assembled diagonally to form an inclined surface in front of the painting work space 11, where a dust collection ventilation fan 12 is installed, and a filter 18 made of nonwoven fabric processed into a bag shape is installed at the exhaust part.

[0007] In the drawing, reference numeral 19 denotes dust collection ducts, which are installed on both the left and right sides of the housing and open into the painting work space 11. This dust collection duct 19 is extended to one side (front) of the housing and connected to a dust collection device 20 consisting of a jet fan 21 and a filter 22 made of bag-shaped nonwoven fabric installed at the exhaust section.

[0008] A turntable 25 is installed in front of the housing as a stand for the mixing manifold, and a mixing manifold 26 is placed on top of it. In the drawing, 23 denotes an empty can for disposal that is placed in a storage area 23 for cans for disposal.

[0009] The heater hose 27 from the coating machine is supported by dedicated carts 28 arranged at intervals of 600 mm to 700 mm along the way, allowing the heater hose to move without coming into direct contact with the road surface, and the tip of the heater hose 27 is connected to the mixing manifold 26.

[0010] An operator stands in the standing space 9 in the center of the housing and applies heat-shielding paint using a handheld paint gun in the painting work space 11. Any floating paint droplets are absorbed by the nonwoven fabric 10 that covers the painting work space 11.

[0011] The dust is also sent by the dust collection ventilation fan 12 to the filter 18 where it is also captured, and is discharged by the jet fan 21 via the dust collection duct 19 and is also captured by the filter 22. Summary of the Invention [Problem to be solved by the invention]

[0012] In the anti-scattering protective basket 1 of Patent Document 1, a worker stands in the standing space 9 in the center of the housing and applies heat-shielding paint in the painting work space 11 using a paint gun held in his hand, and because the standing space 9 for the worker is provided in the center of the housing, the overall size is large.

[0013] In addition, the work requires the paint gun to be held in the hand, and separate workers are required to move the basket and spray, requiring a total of three workers, as shown in Figure 8.

[0014] Furthermore, when spray painting over a wide area, the spray dust would clog the filter, requiring work to be temporarily halted for replacement.

[0015] The object of the present invention is to provide a coating device which overcomes the disadvantages of the above-mentioned conventional examples, is compact in size so that it can be moved and painted by a single worker, and which further prevents spray dust from scattering by installing an air curtain or a suction skirt at the suction duct inlet in addition to the dust collection device, and which allows clogged filters to be replaced continuously without interrupting work. [Means for solving the problem]

[0016] In order to achieve the above object, the present invention provides, first, a coating device using a carriage with wheels on the bottom, and a side of the main frame of the carriage. A rectangular object surrounded by a transparent sheet or resin plate. Forming a painting room, The transparent sheet or the resin plate on the top surface has a hole formed in the center thereof, Upper and lower arms are provided on the main frame. Insert into the painting chamber through the hole The spray gun for spraying paint is supported, the lower opening of the painting room is surrounded by an air curtain, and the air filter installed in the dust collector that captures the spray dust from the painting room is a roll filter that moves with a winding motor. Secondly, it is a painting device using a cart with wheels on the bottom, and on the side of the main frame of the cart. A rectangular object surrounded by a transparent sheet or resin plate. Forming a painting room, The transparent sheet or the resin plate on the top surface has a hole formed in the center thereof, Upper and lower arms are provided on the main frame. Insert into the painting chamber through the hole The main feature of this device is that it supports a spray gun for spraying paint, the lower opening of the painting chamber is surrounded by a suction skirt formed by the suction port of a suction duct, and the air filter provided in the dust collector that captures spray dust from the painting chamber is a roll filter that is moved by a winding motor.

[0017] According to the present invention as described in claims 1 and 2, unlike conventional heat-shielding paint scattering prevention protective baskets, there is no need to provide a central standing space for the worker, making it possible to make it smaller, and upper and lower arms are provided on the main frame to support the spray gun used to spray paint inside the painting room, so there is no need to hold the spray gun in one's hand as in conventional cases, and painting work can be done only by the worker who moves the equipment.

[0018] In addition to the dust collector, the installation of an air curtain or a suction skirt at the intake port of the suction duct can further prevent spray dust from scattering.

[0019] Furthermore, the filter installed in the dust collector that captures spray dust is a roll filter that moves with a winding motor.When spray painting over a wide area, the filter becomes clogged with spray dust and needs to be replaced, which requires temporary interruption, but by using a winding filter, work can be done continuously.

[0020] According to the present invention as set forth in claim 3, when the coating device as set forth in claim 1 is made into a hand-pushed cart, the cart can be easily moved by using the handle.

[0021] According to the present invention as set forth in claim 4, by installing an aggregate spreader, the work of spreading aggregate and the work of spreading paint can be carried out simultaneously, and the work can be carried out by a small number of workers. [Effects of the Invention]

[0022] As described above, the heat-shielding paint scattering prevention protection basket with dust collector of the present invention can prevent paint from scattering and minimize leakage from the inside to the outside without impeding the workability of spraying heat-shielding paint onto road surfaces by securing the work position. It is also possible to replace the paint gun with one used for paints and resins other than heat-shielding paint when spraying the paint onto road surfaces. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a side view showing a first embodiment of a coating device according to the present invention. [Figure 2] 1 is a plan view showing a first embodiment of a coating device according to the present invention. [Figure 3] 1A to 1C are explanatory views of the operation of the first embodiment of the coating device of the present invention. [Figure 4] 1 is a perspective view of a main part of a first embodiment of a coating device according to the present invention. [Figure 5] FIG. 2 is a plan view of the dust collecting device of the coating apparatus of the present invention. [Figure 6] FIG. 2 is a front view of an aggregate spreader of the coating device of the present invention. [Figure 7] FIG. 7 is a cross-sectional view taken along line AA in FIG. 6. [Figure 8] FIG. 10 is a diagram illustrating the number of workers required to perform the coating operation, comparing the coating device of the present invention with a conventional [Figure 9] 1 is a plan view showing a state in which the coating device of the present invention is used; [Figure 10] 1 is a perspective view of a first embodiment of the coating device of the present invention in the process of being manufactured. [Figure 11] 1 is a perspective view of a first embodiment of the coating device of the present invention, seen from the front side during manufacture. FIG. [Figure 12] FIG. 4 is a side view showing a second embodiment of the coating device of the present invention. [Figure 13] FIG. 4 is a plan view showing a second embodiment of the coating device of the present invention. [Figure 14] 5A and 5B are explanatory views of the operation of the coating device according to the second embodiment of the present invention. [Figure 15] FIG. 4 is a perspective view of a main part of a second embodiment of a coating device according to the present invention. [Figure 16] FIG. 10 is a perspective view of a second embodiment of the coating device of the present invention in the process of being manufactured. [Figure 17] FIG. 10 is a perspective view of a second embodiment of the coating device of the present invention in the process of being manufactured. [Figure 18] FIG. 10 is a side view showing a conventional example. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be described in detail below with reference to the drawings. Fig. 1 is a side view of a first embodiment of the coating device of the present invention, and Fig. 2 is a plan view of the same. The coating device 30 is a carriage 50 with wheels 43 attached to the bottom.

[0025] The trolley 50 is composed of a main body frame 51 made of aluminum alloy as a housing, and the wheels 43 of the trolley 50 are casters with stoppers, and the casters used for movement are cushioned (hammer casters), which helps to stabilize the spray pattern generated by unevenness in the road surface, manholes, etc.

[0026] The side (rear) of the main body frame 51 is surrounded by a transparent sheet or resin plate 46 on the periphery (side and top). Rectangular The coating chamber 34 is formed. The transparent sheet or resin plate 46 may be formed in only a part of the coating chamber 34, with the rest being made of opaque plates. The coating chamber 34 may also be formed in a part of the main frame 51.

[0027] The transparent sheet or resin plate 46 is made of a resin plate, nonwoven fabric, vinyl sheet, etc. The transparent sheet or resin plate 46 is used so that the state of the coating can be visually confirmed.

[0028] The upper surface of the transparent sheets or resin plates 46 has a hole 46a formed in the center.

[0029] An air curtain device 32 with air injection nozzles attached to the piping is installed at the bottom opening of the coating chamber 34, and the air curtain from this air curtain device 32 surrounds the bottom opening of the coating chamber 34. The height of the coating chamber 34 can be adjusted so that the air curtain of the air curtain device 32 is positioned 5 cm above the road surface.

[0030] An air duct 32a is connected to the air curtain device 32, and an air hose 32b is connected to the air duct 32a.

[0031] In the illustrated example, the piping with the air injection nozzles formed therein is provided on the left and right sides of the lower opening of the coating chamber 34, but it may also be arranged in a U-shape or a rectangle, and the air duct 32a consists of a horizontal duct and a vertical duct descending from it (see Figure 3).

[0032] Upper and lower arms 42 are attached to the main frame 51, and these support the spray gun 33 that sprays paint inside the coating chamber. The spray nozzle 33a of the spray gun 33 is inserted into the coating chamber 34 through a hole 46a in the upper surface of the transparent sheet or resin plate 46.

[0033] A paint hose 41 is connected to the spray gun 33, and the paint hose 41 is connected to a mixing manifold 38 for two-component paint, and a heater hose / air hose 47 is connected to this manifold 38. In the figure, 39 is a spray lever.

[0034] A dust collector 36 for capturing spray dust from the coating chamber 34 is provided so as to be installed inside the main frame 51.

[0035] The dust collector 36 has a built-in suction fan and an exhaust duct 36a, and an air filter 35 is installed across the ventilation path of the dust collector 36. Although not shown in the figure, the air filter 35 can be attached to the end of the exhaust duct 36a as a filter made of nonwoven fabric processed into a bag shape.

[0036] The air filter 35 is a roll filter 44 arranged in a rolled state and is automatically wound up by a winding motor 45, so that it can be moved appropriately within the dust collecting device 35.

[0037] A basket handle 49 made of a horizontal U-shaped frame is provided on a main body frame 51 of the cart 50.

[0038] An unwinding roll 31b is provided at the bottom of an aggregate storage box behind the coating chamber 34, and an aggregate spreader 31 is installed which drives the unwinding roll 31b to rotate with a motor 31a and discharges aggregate 52 from between the unwinding roll 31b.

[0039] An aggregate supply hose 48 is connected to the aggregate spreader 31, and an aggregate spreader switch 40 is provided midway along the wiring to the motor 31a. Note that this aggregate spreader 31 may be a gear-type one instead of being motor-driven.

[0040] Next, we will explain how to use the device. As shown in Figure 8, conventional devices require three workers, one for spraying and two for moving the basket, but the coating device 30 of the present invention can be operated by only one worker.

[0041] The coating device 30 is pushed and moved by the basket handle 49, and at the same time, the spray gun 33 sprays paint in the coating chamber 34.

[0042] The spray gun 33 is moved up and down by the vertical arm 42, and is lowered until the spray nozzle 33a is inside the coating chamber 34 for application.

[0043] The aggregate spreading switch 40 rotates the motor 31a of the aggregate spreader 31 to spread the aggregate.

[0044] The dust collector 36 uses a fan to suck the dust, and an air curtain generated by a compressor prevents the spray dust from scattering.

[0045] The coating device 30 of the present invention is advanced in a direction away from the surface to be coated, as shown in FIG.

[0046] Spray dust is collected by the dust collector 36 and then filtered by the air filter 35. During application, a roll filter 44 is wound up by the winding motor 45 to prevent a decrease in suction power due to clogging of the filter. The winding speed of the winding motor 45 can be changed by the speed control.

[0047] The aggregate scattering switch 40, the up / down movement switch for the upper / lower arm 42, the spray switch in place of the spray lever 39, etc. may be housed in a control box for remote control, and may be controlled remotely.

[0048] In the above embodiment, the painting device 30 is a hand-pushed type, but it can also be made to travel on rails, or it can be made to travel automatically by a drive mechanism.

[0049] As a second embodiment of the coating device of the present invention, instead of the air curtain from the air curtain device 32 of the first embodiment, a suction skirt 54 is provided at the suction port of the suction duct 53, and this suction skirt 54 surrounds the lower opening of the coating chamber 34.

[0050] As shown in FIG. 15, the suction skirt 54 is a roof-shaped flat duct opening that widens downward, and in the illustrated example, a total of four skirts on the front, back, left and right sides surround the lower opening of the coating chamber 34.

[0051] The suction duct 53 is connected to the dust collector 36 with a built-in suction fan. The dust collector 36 is installed inside the main body frame 51, as in the first embodiment. Also, the air filter 35 is installed across the ventilation path of the dust collector 36, as in the first embodiment.

[0052] The method of use is the same as in the first embodiment, in which the coating device 30 is pushed and moved by the basket handle 49, and at the same time, the spray gun 33 is used to spray paint in the coating chamber 34.

[0053] The spray gun 33 is moved up and down by the vertical arm 42, and is lowered until the spray nozzle 33a is inside the coating chamber 34 for application.

[0054] The aggregate spreading switch 40 rotates the motor 31a of the aggregate spreader 31 to spread the aggregate.

[0055] When suction is performed by the fan of the dust collector 36, the spray dust is sucked into the suction skirt 54 via the suction duct 53, and the scattering of the spray dust can be prevented.

[0056] The spray dust is collected by the dust collector 36 and collected by the air filter 35. The air filter 35 is a roll filter and is wound up by the winding motor 45, preventing a decrease in suction power due to clogging of the filter.

[0057] In both the first and second embodiments, the paint was described as being heat-shielding paint, but the painting device of the present invention can also be replaced with a painting gun for use with paints or resins other than heat-shielding paint that are sprayed onto roads. [Explanation of symbols]

[0058] 1...Scatter prevention basket 6...Aluminum alloy frame 8... Caster 9... Standing space 10...Nonwoven fabric 11...Painting work space 12...Dust collection ventilation fan 14...Upper frame 18...Filter 19...Dust collection duct 20...Dust collector 21...Jet fan 22...Filter 23...Disposal can storage area 24...Tool storage area 25...Turntable 26...Mixing manifold 27...Heater hose 28... Cart 29... Swivel caster 30...Painting equipment 31...Aggregate spreader 31a...Motor 31b...Unwinding roll 32...Air curtain device 32a...Air duct 32b...Air hose 33...Spray gun 33a...Spray nozzle 34...Painting room 35...Air filter 36...Dust collector 36a...Exhaust duct 37...Air duct / air hose 38...Manifold 39...Spray lever 40...Aggregate spray switch 41...Paint hose 42...Upper and lower arms 43...Wheels 44...Roll filter 45...Winding motor 46...Transparent sheet or resin plate 46a...Hole 47...Heater hose / air hose 48...Aggregate supply hose 49...Basket pusher handle 50...Cart 51...Main frame 52...Aggregate 53...Suction duct 54...Suction skirt

Claims

1. This coating device is a cart with wheels on the bottom, and has a rectangular coating chamber surrounded by a transparent sheet or resin plate formed on the side of the cart's main frame, a hole formed in the center of the upper surface of the transparent sheet or resin plate, upper and lower arms are attached to the main frame to support a spray gun for dispersing paint that is inserted into the coating chamber through the hole, the lower opening of the coating chamber is surrounded by an air curtain, and the air filter provided in the dust collector that captures spray dust from the coating chamber is a roll filter that is moved by a winding motor.

2. This coating device is a cart with wheels on the bottom, and has a rectangular coating chamber surrounded by a transparent sheet or resin plate formed on the side of the cart's main frame, a hole formed in the center of the upper surface of the transparent sheet or resin plate, upper and lower arms are attached to the main frame to support a spray gun for spraying paint that is inserted into the coating chamber through the hole, the lower opening of the coating chamber is surrounded by a suction skirt formed by the suction port of a suction duct, and the air filter provided in the dust collector that captures spray dust from the coating chamber is a roll filter that moves with a winding motor.

3. 3. A coating device according to claim 1, wherein a handle is provided on the body frame of the carriage.

4. 3. A coating apparatus according to claim 1, further comprising an aggregate spreader disposed at the rear of the coating chamber.

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