JPH08155356A - Paint drying equipment - Google Patents

Abstract

PURPOSE: To lessen the radius of rotation of rotational movement of a housing part for article to be coated at a moving time from a coating process to a drying process. CONSTITUTION: The coating drying apparatus is composed of a coating booth 11 for carrying out a coating work, a drying booth 31 for carrying out a drying work, provided with a spacing from the coating booth 11, and a rotary frame revolving shaft provided between both booths and rotating. Besides, the rotary frame 51 fixed on the rotary frame revolving shaft is rotated by the rotary frame revolving shaft. Two housing parts 61 for article to be coated which are moved from the rotary frame revolving shaft to outside or to the rotary frame revolving shaft side, are respectively attached on the rotary frame 51.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a coating dryer. In detail, the coating process and the drying process are repeated in sequence,
The present invention relates to a coating drying device that forms a coating film on the surface of an object to be coated.

[0002]

2. Description of the Related Art Conventionally, as a coating drying apparatus for forming a coating film on the surface of a small object to be coated such as a fastener by sequentially repeating a coating step and a drying step, an apparatus that installs a coating booth and a drying booth at an interval is used. Proposed. In the same device, the other object to be coated is stored in a basket, and the basket is attached to both ends of a fixed-length arm that rotates between the coating booth and the drying booth, and the arms are rotated by 180 degrees to sequentially coat the basket. And carry it into the drying booth, and repeat painting and drying in sequence.

[0003]

However, in the conventional coating drying apparatus, since the arm has a fixed length, the arm for moving between the drying booth and the coating booth of the basket in which the object to be coated is stored. The rotation of is always done with a fixed length arm radius. Therefore, there is a problem that the coating drying apparatus becomes large-scale.

[0004]

Means for Solving the Problems The present invention provides

[0005] A coating booth for performing the coating work, a drying booth installed at a distance from the coating booth for performing the drying work,
A rotating frame rotating shaft installed between both booths and rotating,
Rotating frame attached to the rotating frame rotating shaft,
The object to be coated is housed inside and rotated by itself, and the object to be coated is attached to the rotary frame and is moved from the rotary frame rotary shaft to the outside or to the rotary frame rotary shaft side, respectively. To provide a coating drying device.

[0006]

[Operation] The object to be coated is stored in the object storage unit that has been moved to the rotary shaft rotation shaft side. Next, the article storage unit is moved outward from the rotary frame rotation shaft side. Then, one of the object storage units is moved into the coating booth, and painting is performed in the coating booth. The other object-to-be-coated storage unit is carried into the drying booth and dried. When the painting work in the painting booth is completed, both the object storage compartments are moved to the rotating frame rotating shaft side. Then, the rotary shaft of the rotary frame is rotated to replace the positions of both the object storage parts. Next, the article storage unit is moved outward from the rotary frame rotation shaft side. Then, the coating object storage section that was previously loaded into the drying booth is loaded into the coating booth, the coating object is painted, and the coating object storage section that was previously loaded into the coating booth is loaded into the drying booth. Then, the object to be coated is dried. The coating process and the drying process are repeated by sequentially bringing the storage unit for the object to be coated into the coating booth and the drying booth.

[0007]

Embodiment FIG. 1 showing a front view of an embodiment of the present invention, FIG. 2 showing an AA sectional view of the same FIG. 3, FIG. 3 showing a sectional view of FIG. 1BB, FIG. 4 showing the same plan view, front view of the same rotary frame. Fig. 5 showing the figure, Fig. 6 showing the front view of the object to be coated storage section, Fig. 7 showing the side view of the object to be coated storage section, Fig. 8 showing the central sectional view of the object to be coated storage section, work The process will be described with reference to FIG. 9, which shows a schematic diagram.

Reference numeral 11 is a coating booth. Painting booth 11
Has a hollow box shape, a paint injection nozzle 12 is installed inside, and a fastener is coated in this embodiment. 13 is a front door that can be opened and closed, and the surface is made of transparent glass so that the inside can be seen.
1 is installed on the surface. 14 is transparent glass and constitutes the ceiling surface of the coating booth 11. Reference numeral 15 is an illuminating lamp, which is installed above the transparent glass 14. Reference numeral 16 is an air supply filter, which is installed in the upper part of the coating booth 11 side by side with the illumination lamp 15.

Reference numeral 17 is an opening / closing shutter. As shown in FIG. 4, the opening / closing shutter 17 has an L-shape in plan view, and is close to the rear side of the side of the coating booth 11 that opens, and
From the center near the drying booth 31 on the rear surface of the coating booth 11, a coating guide 22 for the article storage unit carry-in which is provided in a substantially horizontal notch shape is covered. However, at the time of coating the article storage unit carry-in guide 22 by lowering the opening / closing shutter 17, the center of the rear surface of the coating booth 11 has a portion not covered by the diameter of the rotating shaft 64. 18 is a door lifting cylinder.
The elevating cylinder 18 elevates the opening / closing shutter 17. Reference numeral 19 is an exhaust passage 19. The exhaust passage 19 connects the coating booth 11 and the outside air. Reference numeral 20 denotes a filter, which is a coconut husk filter in this embodiment and is installed in the middle of the exhaust passage 19. Reference numeral 21 is an exhaust fan 21. The exhaust fan 21 sucks and exhausts the gas in the coating booth 11 via the exhaust passage 19.

Reference numeral 31 is a drying booth. Drying booth 31
Has a hollow box shape, and is installed beside the coating booth 11 with a space from the coating booth 11. An air ejection port 32 is installed inside the drying booth 31, and the air ejected from the air ejection port 32 blows air onto the object to be coated to dry the object to be coated. Reference numeral 33 is a front surface door that can be opened and closed. The front door 33 is installed on the surface of the drying booth 31. 34 is an air duct. Air duct 3
One end of 4 is connected to the air ejection port 32 in the drying booth 31, and the other end is connected to a hot air circulating fan 37 installed adjacent to the drying booth 31. An exhaust damper 36 and a circulation fan 37 are connected to the air duct 34. 38 is a heater, which is an infrared lamp of medium wavelength in this embodiment, and is installed in the drying booth 31. Three
Reference numeral 9 denotes an air outlet outside the booth, which is connected to a duct from the cool air device 35 and is installed adjacent to the drying booth 31. The air outlet 39 outside the booth is installed toward the article storage section 61 located on the drying booth 31 side when the article storage section moving air cylinder 53 is moved to the rotary frame rotation shaft 41 side. Cooling air is blown onto the coating object storage portion 61 that has come to the position to cool it.

In the drying booth 31, the opening / closing shutter 17 and the like are installed as in the coating booth 11. As shown in FIG. 4, the opening / closing shutter 17 has an L-shape in a plan view, and is formed substantially horizontally from the center of the opening side of the drying booth 31 near the rear side and the rear side of the drying booth 31 near the coating booth 11. The provided article storage unit carry-in guide 22 is covered. However, at the time of coating the article storage unit carry-in guide 22 by lowering the opening / closing shutter 17, the center of the back surface of the drying booth 31 has a portion not covered by the diameter of the rotating shaft 64. 18 is a door lifting cylinder. The elevating cylinder 18 elevates the opening / closing shutter 17.

Reference numeral 41 is a rotary frame rotary shaft. The rotating frame rotating shaft 41 is used for the coating booth 11 and the drying booth 3.
It is installed at an intermediate position of 1 and is rotated by the frame rotating air cylinder 42. The rotation may be composed of other rotation means such as a motor.

Reference numeral 51 is a rotating frame. The rotating frame 51 is made of a plate-shaped member having a letter V shape in a front view, and its center is attached to the rotating frame rotating shaft 41. 52 is a holder. Each pair of holders 52 is L-shaped and is attached to the rotary frame 51 with each short side of the L-shape facing the counterpart holder 52 side. Each holder 52,
A moving air cylinder 53 for storing the object to be coated is installed between the rotary frame 51 and each holder 52 to move along the long side of the rotary frame 51.

Reference numeral 61 is an object storage unit. The article storage unit 61 is supported by the rotating shaft 64. The object-to-be-coated storage 61 has a basket shape and stores the object to be coated therein. Reference numeral 62 is a rotation motor for the article storage unit,
It is attached to the outside of the base of the rotary shaft 64, and the object storage unit 6
Rotate 1 itself. The object storage section 61 is attached to the rotary frame 51 via a holder 52, respectively. As shown in FIG. 5, the object storage unit 61 is attached to the holder 52L-shaped short side tip together with the object storage unit rotation gear. The object storage unit 61 is formed of a cylindrical bucket, and the inside thereof has a spiral shape as shown in FIG. Reference numeral 63 is an outlet for the object to be coated, which is always opened. The outer periphery is doubled from the object-to-be-painted carry-out port 63 for a little less than 90 degrees. Since the object to be stored 61 is rotated in the direction of the arrow in FIG. 8 during the coating operation and the drying operation, the object to be coated does not spill from the object outlet 63 of the object to be stored 61. When taking out the article to be coated from the article carrying-out port 63, the article to be coated is taken out by rotating it in the direction opposite to the direction of the arrow in FIG. Reference numeral 65 is a protrusion. The protrusion 65 is
The inner surface of the object storage portion 61 is raised inward from the axial direction of the rotary shaft. In this embodiment, the protrusion 65 has a linear shape, but the protrusion 65 is not limited to a linear shape and may have any shape. Since the projection 65 is attached by twisting,
As the coated object storage portion 61 rotates, it becomes easier to uniformly stir.

Reference numeral 71 is a product hopper.

Next, the operation of the embodiment of the present invention will be described. First of all, the moving air cylinder 5 for each object storage unit
3 are operated at the same time to move each of the object storage parts 61 in the direction of the rotating frame rotating shaft 41. Then, the article to be coated is put into the article storage unit 61 located on the side of the coating booth 11. Next, the door lifting cylinder 18 is operated, the opening / closing shutter 17 is lifted, and the coating booth 11,
Each inner side surface and back surface of the drying booth 31 are opened.

Next, the air cylinders 53 for moving the parts to be coated are simultaneously actuated to move the parts 61 to be coated to the outside from the rotary frame rotating shaft 41 side.
Then, one of the object-to-be-coated-storages 61 has the coating booth 11
Inside, the other object-to-be-coated storage 61 is moved to the drying booth 31. Next, the door lifting cylinder 18 is operated to lower the opening / closing shutter 17 to shut off the coating booth 11 and the drying booth 31 from the outside. At this time, open / close shutter 1
7 has a portion not covered by the diameter of the rotating shaft 64 in the center of the back surface of the coating booth 11 and the drying booth 31, so that it does not contact the rotating shaft 64. Next, in the painting booth,
It is painted. The other coated object storage portion 61 is carried into the drying booth 31 and dried. Object storage 61
In the coating booth 11 and the drying booth 31, it is itself rotated by the coating object storage section rotation motor 62 to rotate the coating object inside. By the rotation, the paint is evenly attached to the surface of the object to be coated.

When the coating work in the coating booth 11 and the drying work in the drying booth 31 are completed, the moving air cylinders 53 for the objects to be stored in the object to be coated are operated again to rotate both objects to be stored 61 in the rotating frame. It is moved to the rotating shaft 41 side. After the movement, the dried object-to-be-stored portion 61 existing in the position adjacent to the drying booth 31 is sprayed with cooling air from the booth outside air ejection port 39 to the object-to-be-coated portion stored in the object-to-be-coated portion 61. Allow the paint to cool.

Next, the frame rotating air cylinder 42
Is operated to rotate the rotary frame rotary shaft 41 to rotate the rotary frame 51 together with the holder 52, and the positions of both the object storage parts 61 are exchanged. After the positions are changed, an object to be coated is newly placed in the empty object storage 61 located adjacent to the coating booth 11.

Next, the opening / closing shutter 17 is opened, and the object storage section 61 is moved outward from the rotary frame rotary shaft 41 side. Then, the object-to-be-painted storage 61 that has been loaded into the drying booth 31 is carried into the coating booth 11, and the object-to-be-painted storage 61 that has been loaded into the coating booth 11 is carried into the coating booth 31. .

The coating step and the drying step are repeated by successively carrying in each of the coating object storage sections 61 into the coating booth 11 and the drying booth 31. That is, the object to be coated is put into the object-to-be-painted storage 61, the first coating, the first drying, the cooling,
After repeating the second coating, the second drying, the cooling, the third coating, the third drying, the cooling, the fourth coating, the fourth drying, the cooling, etc., the work is carried out in the order of carrying out. Object storage 61
Will take four positions, so that it is possible to perform each work at each of the four positions.

That is, in this embodiment, as shown in the schematic view of FIG.
Position C, coating booth 11 adjacent to
There are four positions: a coating position D inside, a cooling carry-out position B adjacent to the drying booth 31, and a drying position A inside the drying booth 31. The object to be coated is discharged from the object-to-be-coated portion 61 which has come to the cooling and discharging position B after the drying process.
Is rotated by the rotation motor 62 of the article storage unit in the direction opposite to the direction of the arrow in FIG. 8 to carry it out to the hopper 71.

The object storage unit 61 from which the object has been discharged
A new object to be coated is introduced into the object to be coated position C adjacent to the coating booth 11 by the rotation of the rotary frame rotation shaft 41.

When the coating material is being sprayed, the coating object storage portion 61 is continuously rotated to spray the coating material evenly on the coating object. After the paint is sprayed, the coating object storage section 61 is intermittently rotated intermittently so that the coating object does not stick to the coating objects or the surface of the storage section 61, and the surface is scratched. Prevent.

[0025]

According to the present invention, the movement of the object storage section between the coating booth and the drying booth is performed by first moving the object storage section toward the rotary frame rotation axis and then rotating the rotary frame rotation axis. Since the positions of both coating object storage parts are interchanged, the turning radius at the time of rotation can be small. Therefore, the device is downsized.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1 showing an embodiment of the present invention.

FIG. 3 is a sectional view taken along the line BB of FIG. 1 according to the embodiment of the present invention.

FIG. 4 is a plan view of an embodiment of the present invention.

FIG. 5 is a front view of a rotating frame according to an embodiment of the present invention.

FIG. 6 is a front view of the article storage unit according to the embodiment of the present invention.

FIG. 7 is a side view of the article storage unit according to the embodiment of the present invention.

FIG. 8 is a central cross-sectional view of an article storage unit according to an embodiment of the present invention.

FIG. 9 is a schematic view of work steps according to an embodiment of the present invention.

[Explanation of symbols]

 11 Coating Booth 31 Drying Booth 41 Rotating Frame Rotating Shaft 51 Rotating Frame 61 Coating Object Storage

Claims (1)

[Claims] 1. A coating booth for performing coating work, a drying booth installed at a distance from the coating booth for performing drying work, a rotating frame rotating shaft installed between both booths, and attached to the rotating frame rotating shaft. And a coated frame storing the coated object inside and being attached to the rotary frame and moved to the outside of the rotary frame rotary shaft or to the rotary frame rotary shaft side, respectively. And coating drying equipment.