JP4591933B2 - Painting system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coating system.
[0002]
[Prior art]
For example, as shown in FIG. 12, the conventional coating system moves the conveyor 100 along the track of the main conveyance line in the factory building 99, holds the workpiece K on the workpiece holder 101 provided on the conveyor 100, The workpiece K is coated by the coating device 104 in the coating chamber 103 provided so as to surround the conveyor 100 by the coating casing 102.
[0003]
Openings 105a and 105b through which the workpiece K can pass are provided at the entrance 102a and the exit 102b of the coating chamber 103, respectively.
[0004]
[Problems to be solved by the invention]
Thus, since the painting chamber 103 is provided in the factory building 99 so as to surround the conveyor 100, it is necessary to carry out the construction of the main transfer line in the painting factory, and then to work on the painting equipment. There is a problem that it becomes longer and capital investment costs increase.
[0005]
Further, since the workpiece K is coated by the coating device 104 in the coating chamber 103 through which the conveyor 100 passes, the paint adheres to the conveyor 100 and the workpiece holder 101, and the large-scale conveyor 100 and workpiece holder 1 are attached. It is necessary to clean everything, and the maintenance work is cumbersome and costly.
[0006]
In addition, since the coating chamber 103 is provided with openings 105a and 105b that are always open to serve as a passing portion of the conveyor 100, the paint blown from the coating apparatus 103 during coating collides with the workpiece surface and other objects. There is a possibility that it will scatter and flow into the factory building 99 from the openings 105a and 105b. When paint scatters in the factory building 99, it collides with another object, becomes fine and mist, floats in the factory building 99, and the solvent component volatilizes from the paint, thus deteriorating the environment in the factory building 99. was there.
[0007]
Further, in the prior art, the distance from the coating device 104 to the openings 105a and 105b is increased, and an exhaust device 106 that directly discharges the air in the coating chamber 103 to the outside of the factory building 99 is provided in the coating casing 102. It was. As a result, the paint blown out from the coating apparatus 103 collides with the workpiece surface and other objects and becomes fine mist to form a fine mist, and further floats in the paint chamber 103. Although the volatile solvent whose concentration in 103 increases tends to flow into the factory building 99 through the openings 105a and 105b that are always open, these can be discharged out of the factory building 99, and the environment inside the factory building 99 is not deteriorated. be able to.
[0008]
However, since four or more workpiece holders 101 are positioned between the coating apparatus 104 and the opening 105b except for the nearest workpiece holder 101, a color in which a different color is applied by changing the paint. In the case of changing, it is impossible to paint with another color of paint until a work that has been painted in the previous color passes through the opening 105b and goes out of the painting chamber 103. That is, four or more workpiece holders 101 except for the nearest workpiece holder 101 between the coating apparatus 104 and the opening 105b need to be in a missing part state without a workpiece, and the color change accordingly. As a result, there is a problem that the efficiency of painting is lowered.
[0009]
The present invention has been made in view of such circumstances, and a first object is that it is easy to install in a paint factory, the work period can be shortened, and capital investment costs can be saved. The third purpose is to prevent the environment inside the factory building from being deteriorated, and the fourth purpose is to improve the painting efficiency by changing the color of the paint. It is to prevent the decrease of.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems and achieve the object, the present invention is configured as follows.
[0011]
  The invention described in claim 1
  “[Claim 1] A main transfer line that allows a workpiece to move along a track,
  A coating casing disposed adjacent to the main transfer line and constituting a coating chamber independent of the main transfer line;
  A coating device in the coating chamber;
  A workpiece holding device that holds the workpiece at the coating position in the vicinity of the coating device during coating;
  A workpiece moving device that enables the workpiece on the main transfer line to move to the workpiece holding device, and allows the workpiece of the workpiece holding device to move on the main transfer line,
  In the painted casing,SaidPainting room andSaidIt becomes the movement path of the workpiece between the main transfer linesingleOpeningPartProvided,And the work holding device is arranged in the painting chamber,
  The workpiece holding device isAn indoor main turntable, a sub turntable with a predetermined arm length disposed at both ends in the longitudinal direction, and a work holding part provided at the end of the sub turntable,
  The sub-rotation table rotates between the workpiece replacement position and the intermediate position for moving from the coating position to the workpiece replacement position via the opening,
  The workpiece moving device enables the workpiece on the main transfer line to move to the workpiece holding unit at the workpiece transfer position, and allows the workpiece of the workpiece holding unit to move on the main transfer line,
  AbovesingleOpeningPartAn air curtain or an open / close door made of a movable wall
  To close the door for a part or all period during the paintingAnd
  The intermediate position is the inside of the paint casing,
  A painting system characterized in that the workpiece replacement position is outside the coating casing, and coating and replacement are performed simultaneously. ].
[0012]
  According to the first aspect of the present invention, it is possible to install the painting casing, the painting device, the workpiece holding device, and the workpiece moving device in parallel during the construction of the main transfer line. You can save money. In addition, the main transfer line is located outside the coating chamber, and the main transfer line is separated from the coating apparatus and in between.singleOpeningPartTherefore, even if the paint sprayed from the coating apparatus collides with a workpiece or the like and is scattered, the scattered paint does not easily reach the main conveyance line, and the paint can hardly adhere.In addition, even if the paint sprayed from the coating equipment collides with a workpiece or the like and scatters, the doors are closed for part or all of the painting, so that the paint can hardly adhere to the main transfer line side. . In addition, it is possible to perform the coating in a short time by setting the workpiece replacement position outside the coating casing and performing the coating and the replacement simultaneously.
[0025]
  Claim2The invention described in
  “The workpiece holding device can be used to apply a finished workpiece before the next painting.SaidFrom the painting positionSaid2. The apparatus as claimed in claim 1, wherein the movement is made outside the painting chamber.InThe described coating system. ].
[0026]
  Claim2According to the invention described in (1), since no paint completion standby position is provided, it is not necessary to create a shortage state for color change, and it is possible to more reliably prevent a reduction in paint efficiency due to color change.
[0029]
  Claim3The invention described in
“The work holding device will remove the work before painting after the last painting.SaidFrom outside the painting roomSaid2. The apparatus according to claim 1, wherein the paint is moved to a painting position.OrClaim2The coating system described in. ].
[0030]
  Claim3According to the invention described in (2), since the workpiece before painting is moved from the outside of the painting chamber to the painting position without providing the painting standby position, the painting after the completion of painting that may be formed by providing the painting standby position is performed. Subtle irregularities can be more reliably prevented from forming on the surface. This is because subtle unevenness on the painted surface after the coating is completed, a part of the paint sprayed onto the workpiece at the painting position is scattered and irregularly adheres to the workpiece before painting at the painting standby position.
[0031]
  Claim4The invention described in
  “Washing water is allowed to flow down along the inner wall of the coating casing.3The coating system according to any one of the above. ].
[0032]
  Claim4According to the invention described in (5), since the washing water is allowed to flow down along the inner wall of the paint casing, the paint is prevented from adhering to the inner wall of the paint casing, and maintenance is easy. Further, even if a part of the sprayed paint collides with the inner wall, it can be hardly scattered.
[0033]
  Claim5The invention described in
  The apparatus further comprises a ventilator that includes a transport casing that configures a storage chamber that stores the main transfer line, and discharges air from the storage chamber to the atmosphere.4The coating system according to any one of the above. ].
[0034]
  Claim5According to the invention described in the above, it is generated by volatilizing during coating by including a transfer casing that constitutes a storage chamber that stores the main transfer line, and having an exhaust device that discharges the air in the storage chamber to the atmosphere. The solvent and the minute paint mist scattered and suspended in the storage chamber can be treated easily and reliably, and can be cleaned in the transfer casing.
[0041]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the coating system of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to these embodiments.
[0042]
First, a first embodiment of a coating system will be described with reference to FIGS. FIG. 1 is a perspective view of the coating system, FIG. 2 is a schematic configuration diagram showing operations of the main transfer line, the coating module, and the workpiece moving device of the coating system, and FIG. 3 is a timing chart of the operation of the coating system.
[0043]
The painting system 1 includes a main transfer line 10, a painting module 20, and a workpiece moving device 30 that constitutes a part of the painting module 20. The main transfer line 10 enables the workpiece K to move along the track. In this embodiment, the conveyor 11 can be moved along the track, the workpiece holder 12 is placed on the conveyor 11, and the workpiece K is held by the workpiece holder 12. The workpiece holder 12 may be fixed to the conveyor 11 or may be detachable. In addition, the main transfer line 10 may be one in which the independent workpiece holder 12 moves along the track, by itself, or by being pushed, without depending on the conveyor 11.
[0044]
The main transfer line 10 is accommodated in a storage chamber 14 constituted by a transfer casing 13, and the storage chamber 14 is provided with a ventilation device 15. The ventilation device 15 includes an exhaust duct 15a, an exhaust fan 15b, and a processing device 15c, and the air in the accommodation chamber 14 is exhausted from the exhaust duct 15a to the outside through the processing device 15c by driving the exhaust fan 15b. The processing device 15c is provided with a filter 15d that captures and separates the floating fine mist-like paint.
[0045]
A plurality of coating modules 20 are arranged adjacent to the main transport line 10 and along the main transport line 10. The coating module 20 uses the upstream side of the main transport line 10 for undercoating and the downstream side for top coating.
[0046]
The painting module 20 includes a painting casing 21, a painting device 22, a work holding device 23, and a cleaning device described below. The painting casing 21 constitutes a painting chamber 25 independent of the main transfer line 10, and a painting device 22, a work holding device 23, and a cleaning device are arranged in the painting chamber 25. The workpiece holding device 23 and the workpiece moving device 30 constitute a coating workpiece transfer device.
[0047]
In addition, a ventilator 26 is provided independently of the ventilator 15 in the storage chamber 14 on a floor member 21 a described below of the paint casing 21. The ventilation device 26 includes an exhaust duct 26a, an exhaust fan 26b, and a processing device 26c. When the exhaust fan 26b is driven, the air in the painting chamber 25 passes through the ventilation port 26i provided in the floor member 21a and passes through the processing device 26c. Exhaust air is exhausted from the exhaust duct 26a. The processing device 26c is provided with a filter 26d that captures and separates the floating fine mist-like paint.
[0048]
  By ventilating the painting chamber 25 with the ventilation device 26, the ventilation device 15 of the storage chamber 14 becomes a painting casing.21Since the amount of mist-like paint leaking through the opening 28 described below can be reduced, clogging by the paint is prevented, and it can be used up to its original adsorption capacity. In addition, the outside air whose temperature and humidity are adjusted is introduced from the ceiling of the paint casing 21.
[0049]
The coating device 22 is disposed in the coating chamber 25 and applies a paint to the workpiece K held by the workpiece holding device 23 located at the coating position by the coating robot 22a.
[0050]
The work holding device 23 serves as a work moving device in the painting chamber 25 that constitutes a part of the coating work transfer device, and includes an indoor main turntable 23a and sub turntables 23b disposed at both ends of the indoor main turntable 23a. 23c and work holding portions 23b1 and 23c1 provided at the end portions of the sub-rotation tables 23b and 23c.
[0051]
The painting casing 21 is provided with an opening / closing door 27 that partitions the painting chamber 25 and the main transfer line 10, and the opening 28 is closed by the opening / closing door 27 during painting by driving a door opening / closing device (not shown). .
[0052]
The workpiece moving device 30 is a workpiece moving device outside the coating chamber 25 that constitutes a part of the coating workpiece transfer device. The workpiece moving device 30 is a robot, and includes an outdoor rotary table 31 and loaders 31a disposed at both ends of the outdoor rotary table 31. 31b. The workpiece holding device 23 and the workpiece moving device 30 constitute a coating workpiece transfer device A, and the coating workpiece transfer device A guides the workpiece K on the main transfer line 10 into the coating chamber 25 through the opening 28 and is painting. The workpiece K is held in the vicinity of the coating apparatus 22, and the workpiece K in the coating chamber 25 after painting is returned onto the main transport line 10 through the opening 28.
[0053]
The coating casing 21 is formed by a floor member 21a and a cover member 21b that covers the floor member 21a, and the cover member 21b is joined to the floor member 21a. The floor member 21a and the cover member 21b can be manufactured independently. After the floor member 21a is disposed adjacent to the main transfer line 10, the coating device 22, the workpiece holding device 23, and the workpiece moving device 30 are disposed on the floor member 21a. Thereafter, the coating module 20 is disposed by joining the cover member 21b to the floor member 21a, or the coating device 22, the workpiece holding device 23 and the workpiece moving device 30 at a place away from the main transfer line 10, and then the floor The equipment period of the coating system 1 can be shortened by arranging the member 21a adjacent to the main transport line 10 and further joining the cover member 21b to the floor member 21a.
[0054]
Next, operation | movement of the coating system of this embodiment is demonstrated based on FIG.2 and FIG.3.
[0055]
In FIG. 2 (A), the opening 28 of the coating casing 21 is closed by the open / close door 27, the coating device 22 is driven in the coating chamber 25, and is held by the auxiliary rotating base 23c of the work holding device 23 by the coating robot 22a. The painting for applying the paint to the workpiece K3 located at the painting position P1 is started. The coating is performed by rotating the workpiece K3 by 90 degrees by the workpiece holding portion 23c1 of the sub-rotation table 23c at a predetermined timing, and coating the entire workpiece K3.
[0056]
On the other hand, the outdoor turntable 31 having the loaders 31a and 31b turns 90 degrees, and the loader 31a extends to the painted work K1 of the work holding portion 23b1 located at the work transfer position P2 outside the closed door 27. While being lifted (lifted up) and engaged (hanger chuck), the loader 31b is extended and lifted (lifted up) to the unpainted workpiece K2 held by the workpiece holder (pallet) 12 on the main transfer line 10. Engage (hanger chuck).
[0057]
The rear outdoor turntable 31 turns 180 degrees, the unpainted work K2 is lowered to the work holding part 23b1 located at the work transfer position P2, the loader 31b is lowered (lifted down), and the engagement is released (hanger unchuck). Thus, the workpiece K1 that has been painted on the workpiece holder (pallet) 12 is similarly delivered from the loader 31a. Further, the rear outdoor turntable 31 turns 90 degrees to be in the state shown in FIG.
[0058]
In FIG. 2B, the work holder (pallet) 12 holding the painted work K1 is moved in the direction of the next process department (pallet positioning release and pallet feed), and the open / close door 27 is opened. At the same time, the coating that continues from FIG.
[0059]
The workpiece holder (pallet) 12 holding the unpainted workpiece K2 is sent from the previous process department to a predetermined position (pallet positioning), and the state shown in FIG. In FIG. 2C, the sub-rotation table (sub-arm) 23b that holds the unpainted workpiece K2 is turned 90 degrees, and the unpainted workpiece K2 held by the workpiece holding portion 23b1 passes through the opening 28 and moves to the workpiece. It moves from the repositioning position P2 to the middle position P3, and the state shown in FIG.
[0060]
In FIG. 2D, the main turntable (index) 23a turns 180 degrees, and the positions of the sub turntable 23b holding the unpainted work K2 and the sub turntable 23c holding the painted work K3 are switched. That is, the painted workpiece K3 is moved to the painting position P3, and the unpainted workpiece K2 is moved to the painting position P1, and the state shown in FIG.
[0061]
In FIG. 2 (E), the sub turn table 23c turns 180 degrees, and the painted workpiece K3 moves from the midway position P3 to the workpiece transfer position P2, and then the door 27 is closed and painting starts. Then, the state returns to the state shown in FIG.
[0062]
In addition, the workpiece holding part 23b1 or the workpiece holding part 23c1, which is to be located at the painting position P1, respectively rotates the workpiece held by turning three times during the painting by 90 degrees. As a result, the work is divided into four times, and the entire surface of 360 degrees can be painted through four faces of 90 degrees. After painting all around by painting, turning, painting, turning, painting, turning, and painting, the unpainted workpiece K2 shown in FIG. 2C passes through the opening 28 and is halfway from the workpiece repositioning position P2. Simultaneously with the 90-degree turning of the sub-rotation table (sub-arm) 23b for moving to the position P3 or during the 180-degree rotation of the main rotation table 23, the work holding portion 23c1 of the other sub-turn table (sub-arm) 23c is also 90. Rotated degrees.
[0063]
The timing chart of FIG. 3 illustrates the above contents. The workpiece holding device 23 and the workpiece moving device 30 constitute the workpiece moving device according to claim 1, and the coating position P <b> 1 passes through the workpiece replacement position P <b> 2 and the intermediate position P <b> 2 for the workpiece K <b> 2 before painting on the main transfer line 10. To the main transfer line 10 through the intermediate position P3 and the workpiece transfer position P2.
[0064]
Note that an air curtain that is always closed when the workpiece K passes or an air curtain that is closed only when the workpiece K passes may be disposed in place of the opening / closing door 27.
[0065]
  4 is the first reference form.The schematic block diagram which shows the coating system of this embodiment, FIG. 5 is the timing chart of the action | operation. The configuration of the coating module in FIG. 4 is the same as that in FIG. 1, the sub turntable 23 b is located on the indoor painting side, the sub turntable 23 c is located on the indoor standby side, and the work holding parts 23 b 1 and 23 c 1 are It can move between the workpiece transfer position P2 and the painting position P1 which is the painting chamber.
[0066]
The loader 31a of the workpiece moving device 30 is located on the coating chamber side, and the loader 31b is located on the transfer line side. The workpiece moving device 30 can move the workpiece K on the main conveyance line 10 to the workpiece holding device 23 of the coating module 20 and can move the workpiece K of the workpiece holding device 23 onto the main conveyance line 10.
[0067]
The cleaning device 24 has a water curtain 24a that allows the cleaning water to flow down along the four inner walls of the paint casing 21, prevents the paint from adhering to the inner wall of the paint casing 21, and facilitates maintenance. Yes, it can prevent the paint from colliding with the inner wall and scattering.
[0068]
  thisReference form 1The coating system of the embodiment takes an operation timing different from the operation timing of each apparatus shown in FIGS. Next, based on FIG. 4 and FIG.Reference form 1The operation of the coating system of the embodiment will be described.
[0069]
The painting robot 22a of the painting apparatus 22 performs painting. When painting is completed, the door 27 is opened, the indoor main turntable 23a in the painting chamber 25 rotates 90 degrees, and the sub turntable 23b located on the indoor painting side is turned 180. The workpiece K coated with the workpiece holding portion 23b1 from the opening 28 of the coating casing 21 is sent to the main conveyance line 10 side. In this way, the work holding part 23b1 located at the painting position P1 is moved to the work transfer position P2.
[0070]
On the other hand, the auxiliary turntable 23c located on the indoor waiting side is rotated 180 degrees, and the work holding part 23c1 moves the unpainted work K inward. In this way, the workpiece holding portion 23c1 located at the painting standby position P3 is moved to the intermediate position P4, and the workpiece holding portion 23c1 moves the unpainted workpiece K inward, thereby reducing the width of the coating casing 21 accordingly. And it can be made compact.
[0071]
In the workpiece moving device 30, the outdoor turntable 31 rotates 90 degrees, the loader 31a moves to the workpiece transfer position P2 facing the workpiece holding portion 23b1, and the loader 31a located on the coating chamber side extends to perform coating. Receive the completed work K.
[0072]
On the other hand, when the outdoor turntable 31 rotates by 90 degrees, the loader 31b moves to the transfer line side, and the loader 31b positioned on the transfer line side extends and the workpiece holder 12 provided on the main transfer line 10 is extended. Receive unpainted work K from
[0073]
The outdoor turntable 31 rotates 180 degrees, the loader 31a located on the coating chamber side moves to the transfer line side, and the loader 31b located on the transfer line side moves to the coating chamber side, and the coating is completed from the loader 31a. The workpiece K is unloaded to the workpiece holder 12 provided on the main transfer line 10, the unpainted workpiece K is unloaded from the loader 31b to the workpiece holding portion 23b1 of the auxiliary turntable 23b, and the loaders 31a and 31b are contracted. The outdoor turntable 31 is rotated 90 degrees, and the main transfer line 10 is moved by one workpiece.
[0074]
Next, the indoor main turntable 23a of the work holding device 23 is rotated 90 degrees, the sub turntable 23b receiving the unpainted work K is rotated 180 degrees and moved to the coating standby position P3, and at the intermediate position P4. The sub-rotation table 23c that is positioned rotates 180 degrees, and the work holder 23c1 moves to the painting position P1.
[0075]
Thereafter, the opening / closing door 27 is closed to close the opening 28, the coating device 22 is operated at the coating position P1, and the workpiece K held by the workpiece holding portion 23c1 is coated. Repeat operation. The time point when the opening / closing door 27 closes and the opening 28 is closed is not particularly limited as long as it is after the unpainted workpiece K is received and before the coating apparatus 22 is activated.
[0076]
As described above, the work holding device 23 enables the work holding portions 23b1 and 23c1 to move between the work transfer position P2 and the painting position P1 serving as the painting chamber, and the painting casing 21 and the main transfer line are provided in the painting casing 21. Since the open / close door 27 that divides 10 is provided and closed during painting, it is possible to prevent the paint from adhering to the main conveyance line side.
[0077]
The paint color can be changed by sending the work K inside the paint module 20 to the main transfer line 10, closing the door 27 and washing the paint injection path (not shown) of the paint robot 22 a of the paint casing 21. Well, it is easy to change the color of the paint.
[0078]
Moreover, since the painting position P1 and the painting standby position P3 are provided in the painting casing 21 and the workpiece K is made to wait during painting, painting can be performed in a short time.
[0079]
  Next, based on FIG. 6 and FIG.Reference form 2The embodiment will be described. FIG. 6 is a schematic configuration diagram of the coating system, and FIG. 7 is a schematic configuration diagram of the cleaning apparatus.
[0080]
  The coating system 1 of this embodiment is given the same reference numerals as in FIGS.NohaSince the configuration is the same, the description is omitted.
[0081]
The main transfer line 10 includes a track 10a, a chassis 10b that can move on the track 10a, and a workpiece holder 12 provided on the chassis 10b, and the workpiece K is held by the workpiece holder 12. The transport casing 13 is provided with a ventilation device 15 corresponding to the position where the coating module 20 is disposed, and the air in the storage chamber 14 is exhausted to the outdoors.
[0082]
The cleaning device 24 includes a water curtain 24a that allows the cleaning water to flow down along the four inner walls of the coating casing 21, and the cleaning water that flows down in a waterfall shape is collected in the discharge groove 24b. The discharge groove 24b is formed on the lower side of the coating casing 21, and the wash water collected in the discharge groove 24b is guided to the settling tank 24d through the discharge pipe 24c. The washing water accumulated in the settling tank 24d is sent to the upper part of the four inner walls of the coating casing 21 from the supply pipe 24f by driving the circulation pump 24e, overflows from the water weir 24g and is washed along the four inner walls. Is supposed to flow down.
[0083]
The settling tank 24d is provided with a cleaning water level detection sensor S1, and when the cleaning water level falls below a predetermined level by the water level detection sensor S1, the electromagnetic valve 24h is opened, and replenishment fresh water is replenished from the replenishment pipe 24i. The
[0084]
An opening / closing door 27 that partitions the coating chamber 25 and the main transfer line 10 is provided at the opening 28 of the coating chamber 25 of the coating casing 21 so that the opening / closing door 27 is closed during painting. May be closed during painting.
[0085]
In the work holding device 23, the indoor main turntable 23a is constituted by a rotary table, and the sub turntables 23b, 23c, and 23d are provided at three intervals of the indoor main turntable 23a at intervals of 120 °. Workpiece holding parts 23b1, 23c1, and 23d1 are provided on the sub-rotation tables 23b, 23c, and 23d.
[0086]
The coating device 22 is arranged at a position away from the opening 28 opened and closed by the opening / closing door 27 so that the mist of the paint does not leak from the gap of the opening / closing door 27 as much as possible. If it arrange | positions in the rotation direction downstream of the indoor main turntable 23a as shown with a dashed-dotted line, the workpiece | work K in which coating was completed can be rapidly sent out on the main conveyance line 10. FIG.
[0087]
  Next, based on FIG.Reference form 3The embodiment will be described. FIG. 8 is a schematic configuration diagram of the coating system.
[0088]
The coating system 1 according to this embodiment is the same as that shown in FIGS.
[0089]
As for the main conveyance line 10, the conveyance casing 13 serves as the wall of a building. In the work holding device 23, the indoor main turntable 23a is constituted by a rotary table, and the sub turntables 23b and 23c are provided at two positions of the indoor main turntable 23a at intervals of 180 °.
Workpiece holding parts 23b1 and 23c1 are provided on the sub turntables 23b and 23c.
[0090]
In this embodiment, the workpiece replacement position P2 is outside the coating casing 21, and the opening 28 is closed by the opening / closing door 27, so that the coating by the coating device 22 and the replacement by the workpiece moving device 30 are simultaneously performed. Thus, painting can be performed in a short time.
[0091]
Further, the door opening / closing device 29 may be moved to the main conveying line 10 side and provided at a position W1 indicated by a two-dot chain line, and the workpiece repositioning position P2 may be within the coating casing 21. In this case, the coating device 22 It is possible to prevent the paint mist from leaking to the outside more reliably by performing the transfer by the work moving device 30 between the two coatings. Further, the door opening / closing device 29 may be provided at a position W2 indicated by a two-dot chain line, and the workpiece placement position P2 may be set as a boundary portion of the coating casing 21.
[0092]
  Next, based on FIG.SecondThe embodiment will be described. FIG. 9 is a schematic configuration diagram of the coating system.
[0093]
The coating system 1 according to this embodiment is the same as that shown in FIGS.
[0094]
In this embodiment, two coating devices 22 and 22 'are provided, and the coating robots 22a and 22a' are switched and used in accordance with the coating specifications.
[0095]
  Next, based on FIG. 10 and FIG.Reference form 4The embodiment will be described. FIG. 10 is a schematic configuration diagram of the coating system, and FIG. 11 is a schematic configuration diagram of the cleaning device and the ventilation device. The coating system 1 according to this embodiment is the same as that shown in FIGS.
[0096]
In the coating system 1 of this embodiment, a coating module 20 that can be disposed adjacent to the main transfer line includes a coating casing 21 that forms a coating chamber 25 and has an opening 28, and a coating device 22 that is disposed in the coating chamber 25. Then, the workpiece K on the main transfer line is guided into the coating chamber 25 through the opening 28, the workpiece K being painted is held in the vicinity of the coating apparatus 22, and the workpiece K in the coating chamber 25 after coating is passed through the opening 28 on the main transfer line. It consists of the workpiece transfer apparatus A for coating to return to.
[0097]
The coating casing 21 is formed by a floor member 21a and a cover member 21b that covers the floor member 21a, and is formed by joining the cover member 21b to the floor member 21a. The cover member 21b forms four side walls 21b1 and a ceiling 21b2.
[0098]
The workpiece holding device 23 that constitutes the coating workpiece transfer device A is provided suspended from the ceiling 21 b 2 of the coating casing 21. The work holding device 23 includes a drive unit 23f, a main arm 23a, sub-arms 23b and 23c, and work holders 23b1 and 23c1.
[0099]
In the drive unit 23f, the main arm 23a can be rotated or rotated about an axis separated from the work holders 23b1 and 23c1. The sub arms 23b and 23c are connected to the main arm 23a so as to be rotatable or rotatable about an axis. The work holders 23b1 and 23c1 are provided on the sub-arms 23b and 23c at positions separated from the connection center axis of the main arm 23a and the sub-arms 23b and 23c, and the work K can be attached and detached by an electromagnetic coupling. .
[0100]
The drive unit 23f is provided with a main motor M1 for driving the main arm 23a, and the main motor M1 rotates or rotates the main arm 23a around the support shaft 23g as a fulcrum. At both ends of the main arm 23a, a first sub motor M2 for driving the sub arms 23b and 23c is disposed independently of the main motor M1. By driving the first sub motor M2, the sub arms 23b and 23c can be freely operated using the support shaft 23h as a fulcrum without being restricted by the rotation or rotation of the main arm 23a.
[0101]
In addition, a second sub motor M3 for driving the work holders 23b1 and 23c1 is disposed at both ends of the main arm 23a independently of the main motor M1 for driving the main arm 23a. The work holders 23b1 and 23c1 can be freely operated via the belts 23i and 23j without being restricted by the rotation or rotation of the main arm 23a by the driving of the second sub motor M3.
[0102]
Further, the work holders 23b1 and 23c1 are connected to the sub arms 23b and 23c so as to be rotatable or rotatable about the support shaft 23h with respect to the sub arms 23b and 23c, and the work holders 23b1 and 23c1 are rotated or rotated. By rotating, the outer periphery of the workpiece can be easily and reliably painted.
[0103]
Further, the work holding device 23 is connected to the main arm 23a so that the main arm 23a can be rotated or rotated around the support shaft 23h, and the connection center between the main arm 23a and the sub arms 23b, 23c. It is provided with sub-arms 23b and 23c provided at sub-arms 23b and 23c at positions separated from the shafts, and allows workpieces to be attached / detached. By rotating and moving closer to the axis, the inertia mass around the main rotation center axis can be reduced, so that the main arm 23a can be quickly rotated or started and stopped.
[0104]
Further, the main arm 23a has workpiece holders 23b1 and 23c1 at a plurality of positions on the same circumference from the rotation center axis, respectively, and can hold a plurality of workpieces on the main arm 23a. The amount of workpiece storage can be reduced.
[0105]
Thus, the coating casing 21 is formed by the floor member 21a and the cover member 21b that covers the floor member 21a, and is formed by joining the cover member 21b to the floor member 21a, and the floor member 21a and the cover member 21b are formed. After the floor member 21a is disposed adjacent to the main conveyance line, the coating device 22 is disposed on the floor member 21a, and then the cover member 21b is joined to the floor member 21a or the coating device 22 Of the coating system 1 by disposing the coating module 20 at a location away from the main conveyance line, and then arranging the floor member 21a adjacent to the main conveyance line and joining the cover member 21b to the floor member 21a. Can be shortened.
[0106]
  Moreover, the work holding device 23 which comprises the coating apparatus 22 and the workpiece conveying apparatus A for coating to the cover member 21b.FixedIn addition, the floor space in the painting chamber 25 can be widened, and washing water can be allowed to flow on the floor.
[0107]
The coating module 20 is provided with a cleaning device 24. The water weir 24g of the cleaning device 24 includes a water curtain 24a that allows the cleaning water to flow along the inner walls of the four side walls 21b1 of the coating casing 21, and the cleaning water that flows down in a waterfall shape. Flows through the floor member 21a and is collected in the washing water discharge port 24b. The cleaning water discharge port 24b is formed on the lower side of the coating casing 21, and the cleaning water collected in the cleaning water discharge port 24b is guided to the separation tank 24d through the discharge pipe 24c.
[0108]
The wash water collected in the separation tank 24d is sent from the supply pipe 24f to the upper part of the four inner walls of the coating casing 21 by the drive of the circulation pump 24e, overflows from the water weir 24g and is washed along the four inner walls. Is supposed to flow down. The mist-like paint sprayed from the coating device 22 and reaching the four inner walls is washed away with washing water.
[0109]
A dispersing agent 90 is added to the separation tank 24d, and the dispersing agent 90 performs non-adhesion and dispersion of the paint in the washing water. The washing water in the separation tank 24 d is supplied to the centrifuge 93 through the circulation pipe 92 by driving the separation pump 91, and the paint residue 94 is separated by the centrifuge 93.
[0110]
The painting module 20 is provided with a ventilation device 26. The ventilation device 26 separates the paint mist from the ventilation outlet 26i on the floor surface of the floor member 21a, the ventilation outlet 26g on the outer surface excluding the floor surface of the floor member 21a, and the paint mist separation chamber 26e and the ventilation opening 26i inside the floor member 21b. A ventilation passage 26k reaching the ventilation outlet 26g through the chamber 26e, an exhaust pipe 26l having an end opened to the atmosphere, connected to the ventilation outlet 26g, and a ventilation passage 26k downstream of the paint mist separation chamber 26e or An exhaust fan 26b for discharging the air in the painting chamber 25 to the atmosphere is disposed in the exhaust pipe line 26l.
[0111]
A draining plate 26h is disposed in the paint mist separation chamber 26e to prevent moisture from entering the exhaust pipe line 26l by driving the exhaust fan 26b. By providing the paint mist separation chamber 26e, the paint mist can be prevented from being released into the atmosphere, and the floor member 21a can be effectively utilized.
[0112]
The exhaust pipe line 26l is provided with a processing device 26c, and the air in the coating chamber 25 is exhausted from the exhaust pipe line 26l to the outside through the processing device 26c by driving the exhaust fan 26b. The processing device 26c is provided with a filter 26d that captures and separates the floating fine mist-like paint.
[0113]
【The invention's effect】
  As described above, in the invention according to the first aspect, during the construction of the main transfer line, it is possible to install the painting casing, the painting device, the workpiece holding device, and the workpiece moving device in parallel, and the construction can be shortened. , You can save capital investment. In addition, the main transfer line is located outside the coating chamber, and the main transfer line is separated from the coating apparatus and in between.singleOpeningPartTherefore, even if the paint sprayed from the coating apparatus collides with a workpiece or the like and scatters, the scattered paint does not easily reach the main transport line, and the paint can hardly adhere.In addition, even if the paint sprayed from the coating equipment collides with a workpiece or the like and scatters, the doors are closed for part or all of the painting, so that the paint can hardly adhere to the main transfer line side. . In addition, it is possible to perform the coating in a short time by setting the workpiece replacement position outside the coating casing and performing the coating and the replacement simultaneously.
[0120]
  Claim2In the invention described in (1), since the standby position for completion of painting is not provided, it is not necessary to create an out-of-stock state for changing the color, and it is possible to more reliably prevent a reduction in painting efficiency due to the color change.
[0122]
  Claim3In the invention described in (2), the workpiece before painting is moved from the workpiece replacement position to the painting position without providing a painting standby position. Subtle irregularities can be prevented more reliably. This is because the subtle unevenness of the painted surface after the coating is completed, a part of the paint sprayed onto the workpiece at the painting position is scattered and irregularly adheres to the workpiece before painting at the painting standby position.
[0123]
  Claim4In the invention described in, since the washing water is allowed to flow down along the inner wall of the paint casing, the paint is prevented from adhering to the inner wall of the paint casing, and maintenance is easy. Further, even if a part of the sprayed paint collides with the inner wall, it can be hardly scattered.
[0124]
  Claim5In the invention described in the above, a solvent is generated by volatilizing during coating by having a transfer casing that constitutes a storage chamber that stores the main transfer line, and having an exhaust device that discharges the air in the storage chamber to the atmosphere. The minute paint mist scattered and floating in the storage chamber can be easily and reliably processed, and can be cleaned in the transfer casing.
[0125]
In the invention according to claim 13, the floor member and the cover member can be manufactured independently. After the floor member is disposed adjacent to the main transfer line, the coating device and the workpiece moving device are disposed on the floor member, and the appropriate cover is provided. Place the coating module by joining the member to the floor member, or place the painting device and workpiece moving device away from the main transfer line, then place the floor member adjacent to the main transfer line, and then the cover member to the floor By joining to the member, the equipment period of the coating system can be shortened.
[Brief description of the drawings]
FIG. 1 is a perspective view of a coating system according to a first embodiment.
FIG. 2 is a schematic configuration diagram illustrating a main transfer line, a coating module, and a workpiece moving device of the coating system according to the first embodiment.
FIG. 3 is a timing chart of the operation of the coating system of the first embodiment.
[Fig. 4]Reference form 1It is a schematic block diagram which shows the coating system of embodiment.
[Figure 5]Reference form 1It is a timing chart of operation of an embodiment of
[Fig. 6]Reference form 2It is a schematic block diagram of the coating system of embodiment.
FIG. 7 is a schematic configuration diagram of a cleaning apparatus.
[Fig. 8]Reference form 3It is a schematic block diagram of the coating system of embodiment.
FIG. 9Of the second embodimentIt is a schematic block diagram of a coating system.
FIG. 10Reference form of the fourth embodimentIt is a schematic block diagram of a coating system.
FIG. 11 is a schematic configuration diagram of a cleaning device and a ventilation device.
FIG. 12 is a schematic configuration diagram of a conventional coating system.

Claims (5)

A main transfer line that allows the workpiece to move along the track,
A coating casing disposed adjacent to the main transfer line and constituting a coating chamber independent of the main transfer line;
A coating device in the coating chamber;
A workpiece holding device that holds the workpiece at the coating position in the vicinity of the coating device during coating;
A workpiece moving device that enables the workpiece on the main transfer line to move to the workpiece holding device, and allows the workpiece of the workpiece holding device to move on the main transfer line,
Wherein the coating casing, said single opening as the path of travel of the workpiece between the coating chamber and the main conveyor line is provided, and the workpiece holding device is arranged in painting chamber,
The work holding device has an indoor main turntable, a sub turntable having a predetermined arm length disposed at both ends in the longitudinal direction, and a work holding portion provided at an end of the sub turntable. ,
The sub-rotation table rotates between the workpiece replacement position and the intermediate position for moving from the coating position to the workpiece replacement position via the opening,
The workpiece moving device enables the workpiece on the main transfer line to move to the workpiece holding unit at the workpiece transfer position, and allows the workpiece of the workpiece holding unit to move on the main transfer line,
The door consisting of air curtain or movable wall provided in the single opening,
The door is closed for a part or all period during the painting ,
The intermediate position is the inside of the paint casing,
A coating system characterized in that the workpiece replacement position is outside the coating casing, and coating and replacement are performed simultaneously. Painting system according to claim 1 wherein the workpiece holding device being characterized in that so as to move out of the paint chamber workpieces painting has been completed from the painting position before the next coating. The workpiece holding device, coating system of claim 1 or claim 2, characterized in from outside the painting chamber before painting work after completion just prior to coating it has be moved to the coating position. The coating system according to any one of claims 1 to 3 , wherein washing water is allowed to flow along the inner wall of the coating casing. Has a conveyor casing constituting the accommodating chamber for accommodating the main transport line, any one of claims 1 to 4 the air in the storage chamber, characterized in that it comprises a ventilator for discharging into the atmosphere The coating system described in.

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