JP2007136398A - Coating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate maintenance work to be carried out on a coating device adapted to coat a work by spray coating. <P>SOLUTION: The coating device is provided with a coating machine 7 which can spray a coating material 6 toward the work 2 and a work supporting device 8 which is housed within a booth 4, supports the work 2 and can position the work 2 opposite to the spraying direction of the coating machine 7. The work supporting device 8 is equipped with a turning device 20 having a turning body 28 which is turnable A around a vertical facing axis, and a supporting arm 24 which projects outward in the diametral direction from the turning body 28, supports the work 2 on its projecting end side 22 and turns A together with the turning body 28. The coating device is provided with a partition object 75 which houses the rotational moving device 20 and a base side 21 of the supporting arm 24, and partitions the turning device 20 and the base side 21 of the supporting arm 24, the coting machine 7, the projecting end side 22 of the supporting arm 24 and the work 2 supported on the the projecting end side 22 from each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a coating apparatus in which a workpiece such as a motorcycle part is painted inside a booth by a coating machine spraying paint.

  Conventionally, there is a coating apparatus disclosed in Patent Document 1 below. According to this publication, a coating machine capable of spraying paint on a workpiece and a booth that is housed inside the booth and supports the workpiece so that the workpiece can be opposed to the spraying direction of the paint by the coating machine. A work support device and a transfer device that is installed outside the booth and can transfer the work are provided. The work supporting device includes a rotating device supported by a stationary member and having a rotating body that can rotate about a longitudinal axis, and each end side protrudes radially outward from the rotating body. Each projecting end side includes a support arm that removably supports the work and rotates together with the rotating body.

  At the time of painting a workpiece by the coating apparatus, first, an unpainted workpiece that has been conveyed from the preceding process toward the booth by the conveying device is carried into the booth. The workpiece is transferred to and supported by one of the projecting end sides of the support arm. Next, the rotating body is rotated 180 °, and the positions of one projecting end side and the other projecting end side are changed. Thereby, the workpiece | work supported by said one protrusion end side is made to oppose in the spraying direction of the coating material by the said coating machine.

  Then, the paint is sprayed onto the workpiece by a coating machine to perform a painting operation. During the painting operation, the already-painted workpiece supported on the other protruding end side of the support arm is transferred to and supported by the transfer device. And the said already-painted workpiece | work is conveyed toward the next process with a conveying apparatus. The subsequent unpainted workpiece that has been conveyed by the conveying device is transferred to and supported by the other protruding end.

  Here, when the painting work on the workpiece supported on one protruding end side of the support arm is completed and the workpiece is already painted, the support arm is rotated 180 ° by the rotation of the rotating body. Thus, the positions of the one projecting end side and the other projecting end side are changed.

  Thereafter, the above-described painting operation is repeated. Thereby, the unpainted workpiece | work conveyed sequentially from the previous process by the said conveying apparatus is coated one after another. On the other hand, these already-painted workpieces are conveyed to the next process one after another by the conveying device.

It is to be noted that the above-described booth prevents the spray paint, which has been deviated from the work and was not used for painting during the painting operation, from freely scattering to the atmosphere side.
JP 2002-1174 A

  By the way, the above conventional technique has the following problems.

  1stly, in the said painting operation, when a coating material is sprayed with respect to a workpiece | work with a coating machine, there exists a possibility that the sprayed coating material which deviated from the said workpiece | work may adhere to the said rotation apparatus and a support arm unnecessarily. If this adhesion is repeated and the amount of adhesion increases, inconveniences such as hindering smooth rotation of the rotating body in the rotating device occur.

  For this reason, it is required to increase the frequency of maintenance work such as cleaning the coating material adhering to the rotating device and the support arm and checking the rotating state of the rotating body in the rotating device. However, such work is extremely complicated.

  Secondly, in order to improve the quality of the coating state of the workpiece, it is conceivable to configure the coating apparatus as follows. That is, an actuating actuator is provided which is interlocked with the support arm to enable the support arm to operate. Then, during the painting operation, the support arm is operated to change the posture of the work supported on the protruding end side of the support arm to a desired state. Thereby, the quality of the coating state of a workpiece | work is improved by making uniform the thickness of the coating film of the coating material in a workpiece | work.

  However, when configured as described above, the operating actuator rotates together with the support arm as the rotating body rotates, so that the electrical wiring installed between the stationary member and the operating actuator does not twist. It is required to configure. However, such a wiring structure may be complicated, that is, the configuration of the coating apparatus may be complicated.

  Moreover, when comprised as mentioned above, at the time of a painting operation | work, a coating material will uselessly adhere to the said operation actuator, and there exists a possibility that the smooth operation | movement of the said support arm may be inhibited in a short time. Therefore, it is not easy to improve the quality of the painting state by changing the posture of the workpiece during the painting operation.

  The present invention has been made paying attention to the above situation, and an object of the present invention is to make it easier to perform maintenance work on a coating apparatus in which a workpiece is coated with spray paint. is there.

  Another object of the present invention is to make it possible to improve the quality of the workpiece coated state with a simple configuration and more easily.

According to the first aspect of the present invention, a coating machine 7 capable of spraying the paint 6 onto the work 2 and a booth 4 are accommodated in the booth 4, and the work 2 is supported in the spraying direction of the coating machine 7. A work support device 8 that can be opposed to each other is provided, and the work support device 8 includes a turning device 20 having a turning body 28 that can turn around a longitudinal axis, and a diameter from the turning body 28. In a coating apparatus provided with a support arm 24 that protrudes outward in the direction and supports the workpiece 2 on the protruding end side 22 and rotates A together with the rotating body 28.
The rotating device 20 and the base side 21 of the support arm 24 are accommodated, the base side 21 of the rotating device 20 and the support arm 24, the coating machine 7, the protruding end side 22 of the supporting arm 24, and the protruding end side thereof. 22 is provided with a partition 75 that partitions the workpiece 2 supported by the workpiece 22.

  In addition to the invention of claim 1, the invention of claim 2, in addition to the invention of claim 1, supports the support arm 24 so as to change the posture of the work 2 supported by the stationary side member 3 and supported by the protruding end side 22 of the support arm 24. When the support arm 24 is positioned at a predetermined position with respect to the operation actuators 46 and 47 by the operation actuators 46 and 47 that can be operated and the rotation A around the longitudinal axis 27 of the rotation body 28, A connecting device 49 is provided for connecting and releasing the supporting arm 24 and the operating actuators 46 and 47 to each other. The supporting arm 24 is connected to the operating actuators 46 and 47 and the connecting device 49 based on the partition 75. It is arranged closer to the base side 21 of.

  According to a third aspect of the present invention, in addition to the first aspect of the present invention, the partition body 75 surrounds the rotating device 20 and the base side 21 of the support arm 24 in a plan sectional view of the partition body 75. It was made to become.

  According to a fourth aspect of the present invention, in addition to the first aspect of the present invention, a part of the partition body 75 is constituted by a water curtain 89, and the midway portion in the longitudinal direction of the support arm 24 passes through the water curtain 89. It is what.

  In addition to the invention of claim 1, the invention of claim 5 is such that the spraying direction of the paint 6 sprayed toward the workpiece 2 by the coating machine 7 is directed to the partition 75.

  In addition to the invention of claim 1, the invention of claim 6 provides an air supply port 92 for supplying external air 94 toward the space 84 between the inner surface of the booth 4 and the outer surface of the partition 75 in addition to the invention of claim 1. The exhaust port 96 is formed at the top of the space 84 and exhausts the air 94 in the space 84 to the outside.

  In addition to the invention of claim 1, the invention of claim 7 includes a transfer device 17 installed outside the booth 4 and capable of transferring the workpiece 2, and the workpiece 2 transferred by the transfer device 17. The work 2 can be transferred from the transfer device 17 to the support arm 24 so as to be supported by the support arm 24, while the work 2 supported by the support arm 24 can be transferred by the transfer device 17. A transfer device 18 is provided that enables the work 2 to be transferred from the support arm 24 to the transfer device 17.

  In this section, the reference numerals appended to the above terms are not to be construed as limiting the technical scope of the present invention to the section “Example” described later or the contents of the drawings.

  The effects of the present invention are as follows.

The invention of claim 1 is a coating machine capable of spraying paint on a work, and a work support device which is accommodated in a booth, supports the work and allows the work to face the spraying direction of the paint machine. The workpiece support device has a rotating device having a rotating body that can rotate about a longitudinal axis, and protrudes radially outward from the rotating member, and the workpiece is projected to the protruding end side. In a coating apparatus provided with a support arm that supports and rotates together with the rotating body,
The rotating device and the base side of the support arm are accommodated, and the space between the rotating device and the base side of the supporting arm, and the coating machine, the protruding end side of the supporting arm, and the workpiece supported on the protruding end side. A partition body for partitioning is provided.

  For this reason, in the case where the paint supported by the coating machine is sprayed on the work supported on the protruding end side of the support arm, the spray paint that has been deviated from the work and has not been used for painting is applied to the rotating device. Further, it is prevented by the partition that it is unnecessarily attached to the base side of the support arm.

  Therefore, it is not necessary to clean the coating material adhering to the rotating device or the base side of the support arm, and the rotation of the rotating body in the rotating device is hindered by the paint adhering unnecessarily. This prevents the rotating body from rotating smoothly over a long period of time. As a result, maintenance work for the coating apparatus can be performed more easily.

  According to a second aspect of the present invention, there is provided an actuating actuator capable of operating the support arm so as to change the posture of the work supported by the stationary side member and supported on the protruding end side of the support arm, and the rotating body 28. A connecting device for connecting the supporting arm and the operating actuator to each other and releasing the connection when the supporting arm is positioned at a predetermined position relative to the operating actuator by rotating around the longitudinal axis 27; Yes.

  For this reason, when performing a painting operation on a workpiece supported on the protruding end side of the support arm, if the support arm is operated so as to change the posture of the workpiece to a desired state by the operating actuator, the painted state of the workpiece The quality of the can be further improved.

  In the case where the operating actuator is provided as described above, when the support arm is to be rotated before and after the painting operation, the connection between the support arm and the operating actuator is released by the connecting device. Just do it. In this way, the actuating actuator is prevented from rotating as the support arm is rotated, and the electrical wiring or the like installed between the stationary member and the actuating actuator is twisted. Is prevented. Therefore, since the structure of the wiring and the like can be simplified, the quality of the painted state of the workpiece can be improved with a simple configuration.

  The actuating actuator and the coupling device are disposed closer to the base side of the support arm with respect to the partition.

  For this reason, it is prevented by the said partition body that the sprayed paint which was not provided for the coating of the said workpiece | work among the paints sprayed with the said coating machine adheres to the said operation actuator and a connection apparatus uselessly.

  Therefore, it is not necessary to clean the paint that adheres to the actuating actuator and the coupling device, and the operation of the actuating actuator and the coupling device is prevented from being hindered by the paint that adheres unnecessarily. Is maintained for a long time. As a result, maintenance work for the coating apparatus can be performed more easily.

  According to a third aspect of the present invention, the partition body has a cylindrical shape surrounding the rotating device and the base side of the support arm in a plan sectional view of the partition body.

  For this reason, the said partition body can be shape | molded as small as possible as what covers the rotation locus | trajectory by the side of the base of the said rotation body and a support arm. Therefore, the work space for the painting work for the work supported on the protruding end side of the support arm can be widened accordingly. As a result, it is possible to further improve the quality of the painted state of the workpiece, such as the degree of freedom in changing the posture of the workpiece.

  According to a fourth aspect of the present invention, a part of the partition is constituted by a water curtain, and a midway portion in the longitudinal direction of the support arm passes through the water curtain.

  For this reason, although the said support arm penetrates the said partition, this penetration part is sealed by the said water curtain. Therefore, it is more reliably prevented that the spray paint that has not been used for coating the workpiece unnecessarily adheres to the base of the rotating device or the support arm. As a result, maintenance work for the coating apparatus can be facilitated more reliably.

  According to a fifth aspect of the present invention, the spray direction of the paint sprayed toward the workpiece by the coating machine is directed toward the partition.

  For this reason, when the coating work is performed by spraying the coating material on the workpiece supported on the projecting end side of the support arm, most of the sprayed coating materials that are not applied to the coating by deviating from the workpiece are Headed to the partition. Therefore, it is possible to prevent the spray paint from being applied unnecessarily directly toward another work supported on the protruding end side of another support arm adjacent to the support arm. As a result, the quality of the painted state of each workpiece can be improved more reliably.

  According to the sixth aspect of the present invention, an air supply port for supplying external air toward the space between the inner surface of the booth and the outer surface of the partition is formed in the upper portion of the space, and the air in the space is exhausted to the outside. An exhaust port is formed at the bottom of the space.

  For this reason, the air supplied to this space in an attempt to ventilate the space flows downward from the top to the bottom of the space. Here, at the time of the above-described painting operation, the spraying direction of the paint by the coating machine is usually directed downward including diagonally downward. That is, the flow direction of the air and the spray direction are forward directions, and the spray paint is prevented from being disturbed by the air. Therefore, even when the space is ventilated, a desired painting operation can be performed and the quality of the workpiece coated state can be improved.

  According to a seventh aspect of the present invention, there is provided a conveying device that is installed outside the booth and is capable of conveying a workpiece, and the workpiece is conveyed from the conveying device so that the workpiece conveyed by the conveying device is supported by the support arm. A transfer device is provided that enables transfer of the work from the support arm to the transfer device so that the work supported by the support arm can be transferred by the transfer device while being transferable to the support arm. ing.

  For this reason, it is prevented by the said booth that the spray paint which was not provided for the coating of the said workpiece | work adheres to the said conveying apparatus uselessly. Therefore, also in this respect, the maintenance work for the coating apparatus can be facilitated.

  With regard to the coating apparatus of the present invention, the best mode for carrying out the present invention is to realize the object of making it easier to perform maintenance work on a coating apparatus in which a workpiece is coated with spray paint. It is as follows.

  That is, a coating machine capable of spraying the paint on the work and a work support device that is accommodated in the booth and supports the work and allows the work to face the spraying direction of the paint machine are provided. Yes. The workpiece support device includes a rotation device having a rotation body that can rotate about a longitudinal axis, and projects radially outward from the rotation body, and supports the workpiece on the protruding end side. And a support arm that rotates together with the rotating body. The rotating device and the base side of the support arm are accommodated, and the space between the rotating device and the base side of the supporting arm, and the coating machine, the protruding end side of the supporting arm, and the workpiece supported on the protruding end side. A partition body for partitioning is provided.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  1 and 2, reference numeral 1 denotes a coating apparatus for coating a workpiece 2 such as a motorcycle part.

  The coating apparatus 1 includes a booth 4 installed on a floor in a building, which is a stationary side member 3, and is accommodated in the booth 4 and supported by a pedestal on the floor. And a plurality of (three) coating machines 7 capable of spraying and the inside of the booth 4 to support the work 2 in a detachable manner and to spray the paint 6 by the coating machine 7 And a work supporting device 8 that can be opposed to each other. Each of the coating machines 7 is arranged around the work support device 8.

  The booth 4 includes a side wall portion 10 that has a cylindrical shape in a plan sectional view, and a ceiling portion 11 that closes an upper end opening of the side wall portion 10. A part of the side wall portion 10 includes a work 2 for the booth 4. An opening 12 is formed to allow the insertion and removal. The coating machine 7 includes an articulated robot 14 and a spray nozzle 15 that is supported by the arm tip of the robot 14 and that can spray the paint 6 freely from a desired position in a desired direction. .

  The work 2 is arranged outside the booth 4 so that the workpiece 2 can be transported from the previous step of the coating process by the coating machine 7 toward the opening 12 side of the booth 4, while from the opening 12 side of the booth 4. A transfer device 17 which is a chain conveyor that enables the workpiece 2 to be transferred toward the next process is provided. The transport device 17 includes a support portion 17a that is arranged at a predetermined pitch and removably supports the workpiece 2, and a chain 17b that connects the support portions 17a to each other. The pre-process is a pre-process such as cleaning and drying of the workpiece 2. Moreover, the said next process is a baking coating process etc. in a baking furnace.

  The workpiece 2 can be transferred from the conveyance device 17 to the workpiece support device 8 so that the workpiece support device 8 supports the workpiece 2 conveyed by the conveyance device 17, while being supported by the workpiece support device 8. A transfer device 18 is provided that allows the workpiece 2 to be transferred from the workpiece support device 8 to the transfer device 17 so that the transferred workpiece 2 can be transferred by the transfer device 17. The transfer device 18 is disposed in the opening 12. Then, the workpiece 2 is transferred by the transfer device 18 through the opening 12.

  In all the drawings, the work support device 8 is located at the approximate center in the plan view of the booth 4 and is supported on the upper surface of the floor, which is the stationary member 3, and the rotation device 20. Projecting radially outward from the base, and the base side 21 is supported by the rotating device 20, while the projecting end side 22 supports a plurality of (four pieces) each supporting the workpiece 2 via the hanger 23. Arm 24.

  The rotating device 20 includes a box-shaped fixing portion 26 fixed to the stationary member 3 and a rotating body 28 supported by the fixing portion 26 so as to be capable of rotating A around a longitudinal axis 27. And a rotation actuator 29 that is housed in the fixed portion 26 and that allows the rotation body 28 to be driven. The rotating body 28 is an annular rotary table. The rotating actuator 29 is a three-phase motor, and the rotating body 28 is linked to the rotating actuator 29 via a known roller gear cam mechanism or the like, and rotates at a predetermined angle (90 °) in one direction. The movement A and the stop can be repeated. The cam mechanism may be a barrel cam mechanism or the like, and may be replaced with a Geneva mechanism or the like. In addition, the rotary body 28 may be intermittently rotated A as described above by index control using the rotary actuator 29 as a servo motor. In this case, the above-described mechanisms may not be provided.

  One end of the support arm 24 is fixed to the rotating body 28 by a bracket 32, and the other end side of the supporting arm 24 is a horizontal pipe that protrudes radially outward of the rotating body 28 substantially horizontally. A first rotating portion 36 supported by the protruding end of the fixed arm 33 so as to be able to rotate (tilt) B around a substantially horizontal first axis 35 orthogonal to the arm axis 34 of the fixed arm 33; And a second rotating portion 38 supported by the first rotating portion 36 so as to be able to rotate C around a substantially vertical second axis 37 perpendicular to the first axis 35. The first and second rotating portions 36 and 38 constitute the protruding end side 22 of the support arm 24. The upper part of the second rotating part 38 is a circular pipe and protrudes upward from the first rotating part 36. The work 2 is detachably supported by the second rotating portion 38 via the hanger 23. The upper part of the support part 17 a of the transport device 17 is the same shape and size as the upper part of the second rotating part 38.

  First and second drive shafts 40 and 41 extending in parallel with the arm axis 34 of the fixed arm 33 are fitted into the fixed arm 33. The end portions of the first and second drive shafts 40 and 41 on the protruding end side 22 of the support arm 24 and the first and second rotating portions 36 and 38 are respectively linked mechanisms 42 and 43 such as bevel gears. Are linked to each other. The first and second drive shafts 40 and 41 are supported by the bracket 32 and the fixed arm 33 so as to be rotatable around the first and second shaft centers 44 and 45, respectively.

  A plurality of sets (four sets) of a pair of first and second actuating actuators 46 and 47 which are AC servo motors are supported on the upper surface of the fixed portion 26 of the rotating device 20. That is, the first and second actuating actuators 46 and 47 are supported by the stationary member 3 via the fixed portion 26. When the support arm 24 rotates A by a predetermined angle in conjunction with the rotation A of the rotating body 28 and then stops, the support arm is placed at a “predetermined position” with respect to the first and second actuating actuators 46, 47. 24 is located (shown in FIGS. 1-3).

  The “predetermined position” of the support arm 24 with respect to the first and second actuating actuators 46 and 47 is the first and second shaft centers 44 and 45 of the first and second actuating actuators 46 and 47. This is the position of the support arm 24 when the first and second axis centers 44 and 45 of the second drive shafts 40 and 41 coincide. The first and second actuating actuators 46 and 47 may be supported directly on the stationary member 3 or may be supported on the stationary member 3 by a separate bracket or the like.

  When the support arm 24 is positioned at the “predetermined position” with respect to the first and second actuating actuators 46 and 47 due to the rotation A of the support arm 24, the first and second drive shafts 40 of the support arm 24. , 41 and the first and second actuating actuators 46, 47 are connected to each other (FIG. 3), and a connecting device 49 is provided that can release the connection (not shown).

  The connecting device 49 supports the first and second actuating actuators 46 and 47, and moves in the direction parallel to the arm axis 34 toward the projecting end side 22 of the support arm 24. A movable base 50 supported by the fixed portion 26 so as to be enabled, a coupling actuator 51 that is a pneumatic cylinder that is supported by the fixed portion 26 and drives the movable base 50 to move forward and backward, and D, E; First and second couplings 52 and 53 for simultaneously connecting the output shafts of the operating actuators 46 and 47 to the ends of the first and second drive shafts 40 and 41 on the base side 21 of the support arm 24 in a releasable manner. And. This connection is made possible at the “predetermined position” when the first and second actuating actuators 46 and 47 are moved forward D together with the movable base 50 by driving the connection actuator 51.

  The first and second actuating actuators 46 and 47 are connected to the first and second drive shafts 40 and 41 by the first and second couplings 52 and 53 (FIG. 3). If the first and second actuating actuators 46 and 47 are driven, these driving forces are applied to the first and second couplings 52 and 53, the first and second driving shafts 40 and 41, and the respective interlocking movements. This is transmitted to the first and second rotating portions 36 and 38 through the mechanisms 42 and 43. Then, the first rotating part 36 rotates B and the second rotating part 38 rotates C, that is, the support arm 24 is operated, and the hanger 23 is moved to the second rotating part 38. The posture of the workpiece 2 supported via the is changed to a desired state.

  On the other hand, the first and second actuating actuators 46 and 47 are moved backward E together with the movable base 50 by driving the connecting actuator 51. Then, the first and second couplings 52 and 53 are decoupled, and the first and second actuating actuators 46 and 47 are decoupled from the first and second drive shafts 40 and 41. Here, although not shown, the first and second drive shafts 40 and 41 are in the first and second axis centers in cases other than the “predetermined position” such as when the support arm 24 is rotated A. 44 and 45 are held at predetermined rotational positions. Accordingly, when the support arm 24 is rotated A, the rotations B and C of the first and second rotating portions 36 and 38 are blocked, and the work 2 supported on the protruding end side 22 of the support arm 24 is supported. Is held in a fixed posture.

  4 and 6, the hanger 23 extends in the vertical direction, and a lower portion of the hanger 23 is fitted to the second rotating portion 38 so as to be detachably fitted on the second axis 37. The main hanger 62 projects in the middle in the longitudinal direction, is fixed to the workpiece 63 with the flange 63 joined to the upper end surface of the second rotating unit 38, and projects downward from the workpiece 2. A sub-hanger 64 whose projecting end is removably fitted to the upper end of the main hanger 62, and the main hanger 62 is free to move around the second axis 37 with respect to the second rotating portion 38. A positioning member 65 for preventing the rotation and a positioning member (not shown) for preventing the sub hanger 64 from freely rotating around the second axis 37 with respect to the main hanger 62 are provided.

  The positioning member 65 includes a V-shaped groove formed in the upper end surface of the second rotating portion 38 and a V-shaped protrusion formed in the flange 63 so as to be removably inserted into the groove. Yes. A plurality (four) of the grooves are formed on the upper end surface of the second rotating portion 38. A plurality (four) of the protrusions are formed on the lower surface of the flange 63.

  1, 2, 5, and 6, the transfer device 18 includes a base 67 that is supported on the floor, which is the stationary side member 3, and a rotation F, a raising operation G, and a vertical axis 68. A lift 69 supported by the base 67 so as to be able to move down H, and a pair of hands 70 and 71 supported by the lift 69 and capable of gripping the hanger 23 are provided.

  From the original state of the transfer device 18 (solid lines in FIGS. 1, 2, and 5), by the rotation F, the raising operation G and the lowering operation H of the lifting platform 69, and the opening and closing operations of the hands 70 and 71, These hands 70 and 71 can be arranged in the vicinity of the lower portion of the flange 63 of each hanger 23 supported by the support portion 17a of the transport device 17 and the second rotating portion 38 of the support arm 24 (see FIG. 2 and 6 in 2). From this state, if the lifting platform 69 is moved up G, the hangers 23 are lifted by the hands 70 and 71 lifting the flange 63.

  Then, the hangers 23 are separated from the support portion 17a of the transport device 17 and the second rotating portion 38 of the support arm 24, respectively. Here, if the hands 70 and 71 are closed, the lower portions of the main hanger 62 of the hanger 23 are gripped by the hands 70 and 71 (a chain line in FIG. 6). When the lifting platform 69 is rotated 180 ° from this state, the positions of the unpainted workpiece 2 detached from the transfer device 17 and the painted workpiece 2 detached from the support arm 24 are mutually aligned. Replaced.

  Next, when the elevating platform 69 is moved down H together with the hands 70 and 71, the lower ends of the main hangers 62 are fitted into the support portion 17 a and the second rotating portion 38. Here, if the hands 70 and 71 are opened, the gripping of the hangers 23 by the hands 70 and 71 is released, and the lower portion of the main hanger 62 of the hangers 23 is connected to the support portion 17a and the second portion. The rotating part 38 is fitted and supported. At this time, the hanger 23 is positioned by the positioning member 65 at a predetermined position around the second axis 37 with respect to the second rotating portion 38. As a result, the painted workpiece 2 is supported by the support portion 17 a of the transport device 17, while the unpainted workpiece 2 is supported by the second rotating portion 38 of the support arm 24. From this state, the lifting / lowering base 69 is returned to the original state (solid lines in FIGS. 1, 2, and 5) by being raised and rotated F.

  Next, the transport device 17 is transported by a predetermined pitch toward the next process, and the support arm 24 is rotated A by a predetermined angle (90 °). Then, the already-painted workpiece 2 supported by the support portion 17a of the transport device 17 is transported by a predetermined pitch toward the next process, and the unpainted workpiece 2 supported by the support arm 24 is It is rotated A so as to face the coating machine 7. At this time, the unpainted work 2 supported by the next support portion 17 a following the support portion 17 a of the transport device 17 and the previous support arm 24 supported by the next support arm 24 are supported. The coating workpiece 2 is opposed to the transfer device 18 with the transfer device 18 interposed therebetween. Hereinafter, the operations of the transfer device 17, the support arm 24, and the transfer device 18 can be repeated.

  1 and 2, the rotating device 20 and the base side 21 of the support arm 24 are accommodated, the base side 21 of the rotating device 20 and the support arm 24, and the projecting end side of the coating machine 7 and the support arm 24. 22 and a partition 75 that partitions the workpiece 2 supported by the protruding end side 22 is provided. In the plan sectional view of the partition 75 (FIG. 2), the partition 75 is formed to have a cylindrical shape surrounding the rotating device 20 and the base side 21 of the support arm 24. The partition body 75 is substantially located on the axis 27 of the rotating device 20.

  The partition body 75 includes an upper cylindrical body 76 that constitutes an upper portion thereof, and a lower cylindrical body 77 that is positioned slightly below the upper cylindrical body 76. An annular gap 78 is formed between the lower edge portion of the upper cylindrical body 76 and the upper edge portion of the lower cylindrical body 77, and the middle portion in the longitudinal direction of each of the support arms 24 rotates around the annular gap 78. It penetrates so that it can be moved.

  On the outer peripheral surface of the upper cylindrical body 76 in the middle portion in the height direction of the upper cylindrical body 76, a water reservoir 79 of the same level is formed along the circumferential direction of the outer peripheral surface. Further, a sewage reservoir 80 of the same level is formed at the upper end of the lower cylindrical body 77 over the entire circumferential direction of the lower cylindrical body 77. A water pump 82 for supplying water 81 to the water reservoir 79 is provided.

  An annular partition plate 83 that is disposed on the shaft 27 and closes the annular gap 78 is provided. Midway portions in the longitudinal direction of the fixed arm 33 of each of the support arms 24 penetrate the partition plate 83, respectively. The partition plate 83 is supported by the fixed arm 33, and can be turned around the axis 27 together with the support arms 24. The upper edge portion of the partition plate 83 is positioned closer to the base side 21 of the support arm 24 than the lower edge portion of the lower cylindrical body 77, and the lower edge portion of the partition plate 83 is in the sewage reservoir 80. It extends towards.

  An annular space 84 between the inner surface of the booth 4 and the outer surface of the partition 75, in the circumferential direction around the axis 27, the partial space 84 a on the coating machine 7 side and the transfer device 18. A pair of partition walls 88 for partitioning to the other space 84b on the side are provided. Each partition wall 88 is formed with a notch (not shown) that allows the rotation A of the support arms 24 and the rotation A of the workpieces 2 supported by the support arms 24. The water reservoir 79 is provided so as to correspond to the partial space 84 a and is not provided in the other space 84 b of the space 84.

  A bottom plate 85 that closes the bottom of the partial space 84a is provided, and another water reservoir 86 of the same level is formed along the outer edge of the outer edge of the bottom plate 85. Water 81 is also supplied to the other water reservoir 86 by the water pump 82. The bottom plate 85 is formed with drainage ports 87 at a plurality of locations (three locations), and the drainage ports 87 communicate with a processing facility (not shown).

  In the partial space 84 a of the space 84, the water 81 overflowing from the water reservoir 79 after being supplied to the water reservoir 79 is substantially laminar so as to cover the outer peripheral surface of the upper cylindrical body 76. It is made to flow down at. The water 81 after flowing down the outer surface of the upper cylindrical body 76 is allowed to flow down the outer surface of the partition plate 83 that closes the annular gap 78 and flows down so as to close the annular gap 78. After sealing, it is made to flow into the sewage reservoir 80. A water curtain 89 is formed by water 81 flowing down the outer peripheral surfaces of the upper cylindrical body 76 and the partition plate 83 and water 81 flowing down so as to close the annular gap 78.

  Another partition plate 90 that faces the water curtain 89 that flows down the outer surface of the partition plate 83 and closes the annular gap 78 from the vicinity of the protruding end 22 of the support arm 24 is the longitudinal direction of the support arm 24. It is attached in the middle part. The other partition plate 90 has a circular bowl shape, and its lower end extends toward the inside of the sewage reservoir bowl 80.

  The partition plate 83 prevents a part of the water 81 forming the water curtain 89 from scattering through the annular gap 78 toward the rotating body 28 of the rotating device 20 and the base side 21 of the support arm 24. To do. On the other hand, the other partition plate 90 prevents a part of the water 81 from scattering toward the protruding end side 22 of the support arm 24 and the workpiece 2.

  Instead of the partition plate 83, a water curtain 89 that closes the annular gap 78 is provided with another partition plate having a circular bowl shape facing the proximity from the base side 21 of the support arm 24. You may attach to the middle part of the longitudinal direction of the said support arm 24. FIG. Further, the other partition plate 90 may be formed to have an annular shape located on the shaft center 27 in the same manner as the partition plate 83.

  The sewage reservoir 80 may not be provided. In this case, the lower end portions of the partition plate 83, the other partition plate 90, and still another partition plate are closer to the protruding end side 22 of the support arm 24 than the upper edge portion of the lower cylindrical body 77. Be placed.

  In the partial space 84a of the space 84, after flowing into the sewage basin 80, the water 81 overflowing from the sewage basin 80 is composed of an outer peripheral surface of the lower cylindrical body 77 and a bottom plate connected thereto. It is made to flow down in a substantially laminar flow so as to cover the upper surface of 85, and then drained from the drainage port 87. Further, after being supplied to the other water reservoir 86, the water 81 overflowing from the other water reservoir 86 is caused to flow down in a substantially laminar flow so as to cover the upper surface of the bottom plate 85, and thereafter The water is drained from the drain port 87.

  Further, in the other space 84b of the space 84, a ridge 90a for allowing the water 81 dripped from the partition plate 83 to flow in is provided. The water 81 that has flowed into the ridge 90 a flows through the ridge 90 a toward the partial space 84 a and is discharged from the drain port 87.

  The spraying direction of the paint 6 sprayed toward the workpiece 2 by the coating machine 7 is supposed to be directed to the partition 75 and obliquely downward. At this time, the spray paint 6 deviating from the workpiece 2 is prevented from colliding with the layer of water 81 covering the outer surface of the partition 75 and the upper surface of the bottom plate 85 and adhering to the partition 75 and the bottom plate 85. The Then, the paint 6 is sent to the treatment facility together with the water 81.

  A ventilation device 91 for ventilating a partial space 84a of the space 84 is provided. The ventilation device 91 is provided so as to close the upper end portion of the partial space 84 a, and a ventilation ceiling 93 having a large number of ventilation holes serving as the air supply ports 92, and the partial space 84 a through the ventilation ceiling 93. A blower 95 that supplies air 94 and an exhaust port 96 that allows the air 94 that has reached the lower end of the partial space 84a to be exhausted to the outside of the booth 4 toward a processing facility (not shown) are provided. The flow rate of the air 94 that passes through the ventilation ceiling 93 and flows downward in the partial space 84a is substantially equal in each part in plan view. The drainage port 87 and the exhaust port 96 are shared with each other.

  The painting operation of the workpiece 2 by the coating apparatus 1 will be described.

  First, the unpainted workpiece 2 conveyed by the conveying device 17 toward the booth 4 from the previous step of the painting operation by the coating device 1 is opposed to the transferring device 18 by the transferring device 18. It is transferred to and supported by the support arm 24 of the work support device 8. In this case, the connection between the first and second drive shafts 40 and 41 of the support arm 24 and the operating actuators 46 and 47 is released. Then, the support arm 24 together with the rotating body 28 of the rotating device 20 is rotated A by a predetermined angle (90 °), and the unpainted work 2 supported by the support arm 24 is the first coating machine. It is made to oppose 7 (I) and is painted by this coating machine 7 (I).

  During the painting operation by the first painting machine 7 (I), the first and second drive shafts 40 and 41 of the support arm 24 and the operating actuators 46 and 47 are interlocked with each other by the coupling device 49. Then, the support arm 24 is operated, and the workpiece 2 is brought into a desired posture, so that the quality of the painted state of the workpiece 2 is improved. On the other hand, on the other support arm 24 following the support arm 24, the subsequent unpainted workpiece 2 conveyed by the conveyance device 17 is transferred and supported by the transfer device 18.

  When the painting operation by the first painting machine 7 (I) on the workpiece 2 supported by the support arm 24 is completed, the first and second drive shafts 40 and 41 of the support arm 24 and the respective actuation actuators 46 and 47 are completed. Is disconnected. The support arm 24 together with the rotating body 28 of the rotating device 20 is rotated A by a predetermined angle (90 °). Then, the workpiece 2 supported by the support arm 24 is opposed to the second coating machine 7 (II), and is again painted by the coating machine 7 (II). At this time, the unpainted workpiece 2 supported by the other support arm 24 is opposed to the first first coating machine 7 (I), and the first coating machine 7 (I) Painted.

  Thereafter, the same painting operation as described above is repeated. Then, the workpiece 2 finally coated by the third coating machine 7 (III) is transferred and supported by the transfer device 18 to the support portion 17a of the transfer device 17, and is transferred to the next process. The In addition, in each painting work by each said painting machine 7 (I) (II) (III) with respect to the one workpiece | work 2, the main coating site | parts and the coating conditions of the said workpiece | work 2 are mutually different.

  According to the above configuration, the rotation device 20 and the base side 21 of the support arm 24 are accommodated, the rotation device 20 and the base side 21 of the support arm 24, the coating machine 7, and the protruding end side 22 of the support arm 24. And the partition body 75 which partitions off between the workpiece | work 2 supported by this protrusion end side 22 is provided.

  For this reason, when the paint 6 is sprayed by the coating machine 7 on the workpiece 2 supported on the projecting end side 22 of the support arm 24 and the painting work is performed, the spray that has deviated from the workpiece 2 and has not been used for painting. It is prevented by the partition 75 that the paint 6 is unnecessarily adhered to the rotating device 20 or the base side 21 of the support arm 24.

  Therefore, it is not necessary to clean the coating material 6 adhering to the rotating device 20 or the base side 21 of the support arm 24, and the rotating material 28 in the rotating device 20 is rotated by the coating material 6 which is unnecessarily adhered. The obstruction is prevented, and the smooth rotation of the rotating body 28 is maintained for a long time. As a result, the maintenance work for the coating apparatus 1 can be performed more easily.

  Further, as described above, the operation actuators 46 and 47 that enable the support arm 24 to be operated so as to change the posture of the work 2 supported by the stationary side member 3 and supported by the protruding end side 22 of the support arm 24. When the support arm 24 is positioned at a predetermined position with respect to the operation actuators 46 and 47 by the rotation A around the longitudinal axis 27 of the rotation body 28, the support arm 24 and the operation actuator 46, 47 is provided with a connecting device 49 for connecting and disconnecting 47 to each other.

  For this reason, when the painting work is performed on the workpiece 2 supported on the protruding end side 22 of the support arm 24, the paint 6 can be sprayed freely by the coating machine 7 as described above, and the operation actuators 46, 47 can be applied. By operating the support arm 24 so as to change the posture of the workpiece 2 to a desired state, the quality of the painted state of the workpiece 2 can be further improved.

  In the case where the operation actuators 46 and 47 are provided as described above, when the support arm 24 is to be turned A before and after the painting operation, the connection device 49 operates the support arm 24. The connection with the actuators 46 and 47 may be released. This prevents the operating actuators 46 and 47 from rotating A along with the rotation A of the support arm 24, and is installed between the stationary member 3 and the operating actuators 46 and 47. It is possible to prevent the electrical wiring and the like from being twisted. Therefore, since the structure of the wiring or the like can be simplified, the quality of the workpiece 2 in the painted state can be improved with a simple configuration.

  The actuating actuators 46 and 47 and the connecting device 49 are arranged closer to the base side 21 of the support arm 24 with the partition 75 as a reference.

  For this reason, out of the paint 6 sprayed by the coating machine 7, the spray paint 6 that has not been used for coating the workpiece 2 is unnecessarily attached to the operating actuators 46, 47 and the coupling device 49. It is prevented by the partition body 75.

  Therefore, the cleaning operation for the paint 6 adhering to the operating actuators 46 and 47 and the connecting device 49 is unnecessary, and the operation of the operating actuators 46 and 47 and the connecting device 49 is hindered by the paint 6 adhering unnecessarily. These operations are maintained over a long period of time. As a result, the maintenance work for the coating apparatus 1 can be performed more easily.

  Further, as described above, the partition body 75 has a cylindrical shape surrounding the rotation device 20 and the base side 21 of the support arm 24 in a plan sectional view of the partition body 75.

  For this reason, the partition body 75 can be formed as small as possible so as to cover the rotation A locus on the base side 21 of the rotation body 28 and the support arm 24. Therefore, the work space for the painting work on the work 2 supported on the protruding end side 22 of the support arm 24 can be increased accordingly. As a result, the quality of the painted state of the workpiece 2 can be further improved, for example, the degree of freedom of the posture change of the workpiece 2 can be further improved.

  Further, as described above, a part of the partition 75 is constituted by the water curtain 89, and the midway portion of the support arm 24 in the longitudinal direction passes through the water curtain 89.

  Therefore, although the support arm 24 penetrates the partition body 75, the penetration portion is sealed by the water curtain 89. Therefore, it is more reliably prevented that the spray paint 6 that has not been applied to the work 2 is unnecessarily attached to the base side 21 of the rotating device 20 or the support arm 24. As a result, maintenance work for the coating apparatus 1 can be facilitated more reliably.

  Further, as described above, the spraying direction of the paint 6 sprayed toward the workpiece 2 by the coating machine 7 is directed toward the partition 75.

  For this reason, when the paint 6 is sprayed by the coating machine 7 on the workpiece 2 supported on the projecting end side 22 of the support arm 24 and the painting work is performed, the spray that has deviated from the workpiece 2 and has not been used for painting. Most of the paint 6 is directed to the partition 75. Therefore, it is possible to prevent the spray paint 6 from being applied unnecessarily directly toward the other work 2 supported on the protruding end 22 of the other support arm 24 adjacent to the support arm 24. As a result, the quality of the painted state of each workpiece 2 can be improved more reliably.

  As described above, the air supply port 92 for supplying the external air 94 toward the space 84 between the inner surface of the booth 4 and the outer surface of the partition 75 is formed in the upper portion of the space 84. An exhaust port 96 for exhausting the air 94 to the outside is formed at the bottom of the space 84.

  For this reason, the air 94 supplied to the space 84 in an attempt to ventilate the space 84 flows downward from the top of the space 84 toward the bottom. Here, at the time of the above-described painting operation, the spraying direction of the paint 6 by the coating machine 7 is usually directed downward including an obliquely downward direction. That is, the flow direction of the air 94 and the spray direction are forward directions, and the spray paint 6 is prevented from being disturbed by the air 94. Therefore, even when the space 84 is ventilated, a desired painting operation can be performed and the quality of the painting state of the workpiece 2 can be improved.

  Further, as described above, the transfer device 17 installed outside the booth 4 and capable of transferring the workpiece 2 and the workpiece 2 transferred by the transfer device 17 are supported by the support arm 24. 2 can be transferred from the transfer device 17 to the support arm 24, while the workpiece 2 supported by the support arm 24 is transferred from the support arm 24 so that the transfer device 17 can transfer the workpiece 2. A transfer device 18 that can be transferred to the device 17 is provided.

  For this reason, the booth 4 prevents the spray paint 6 that has not been used for painting the workpiece 2 from being unnecessarily adhered to the transport device 17. Therefore, also in this respect, the maintenance work for the coating apparatus 1 can be performed more easily.

  Although the above is based on the illustrated example, each of the actuators may be any of electric, hydraulic, pneumatic, solenoid and the like. The transfer device 18 may be the robot 14 as described above. Further, the partition body 75 may accommodate only a part such as the rotation body 28 of the rotation device 20.

It is whole side surface sectional drawing of a coating device. It is whole plane sectional drawing of a coating device. FIG. 3 is a partially enlarged partial cutaway view of FIG. 2. FIG. 4 is a partial side cross-sectional view of what is shown in FIG. 3. FIG. 3 is a partially enlarged view of FIG. 2. FIG. 6 is a partial cross-sectional view taken along line VI-VI in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coating device 2 Work piece 3 Static side member 4 Booth 6 Paint 7 Coating machine 8 Work support device 17 Conveyance device 18 Transfer device 20 Rotating device 21 Base side 22 Protruding end side 23 Hanger 24 Support arm 26 Fixing portion 27 Axle 28 Rotating body 29 Rotating actuator 46 Actuating actuator 47 Actuating actuator 49 Connecting device 75 Partition body 81 Water 84 Space 85 Bottom plate 87 Drain port 89 Water curtain 90a ａ 91 Ventilation device 92 Air supply port 93 Ventilation ceiling 94 Air 96 Exhaust port A Rotation B Rotation C Rotation D Forward movement E Reverse movement F Rotation G Ascending action H Descending action

Claims (7)

There is provided a coating machine capable of spraying paint on a work, and a work support device which is housed in a booth and supports the work and allows the work to face the spraying direction of the paint machine. A rotating device having a rotating body that is rotatable about a longitudinal axis, and a rotating body that protrudes radially outward from the rotating body and supports the workpiece on a protruding end side of the rotating body. In a coating apparatus provided with a support arm that rotates with
The rotating device and the base side of the support arm are accommodated, and the space between the rotating device and the base side of the supporting arm, and the coating machine, the protruding end side of the supporting arm, and the workpiece supported on the protruding end side. A coating apparatus comprising a partition for partitioning.   An actuating actuator that can actuate the support arm to change the posture of the work supported by the stationary side member and supported by the protruding end side of the support arm, and a rotation of the rotating body around the longitudinal axis. When the support arm is located at a predetermined position with respect to the operating actuator, a connecting device is provided for connecting and releasing the supporting arm and the operating actuator to each other, and the operating actuator and the connecting device are The coating apparatus according to claim 1, wherein the coating apparatus is disposed closer to the base side of the support arm with respect to the partition body.   The coating apparatus according to claim 1, wherein the partition body has a cylindrical shape surrounding the rotating device and the base side of the support arm in a plan sectional view of the partition body.   The coating apparatus according to claim 1, wherein a part of the partition body is formed of a water curtain, and a midway portion in the longitudinal direction of the support arm passes through the water curtain.   2. The coating apparatus according to claim 1, wherein a spraying direction of the paint sprayed toward the workpiece by the coating machine is directed toward the partition.   An air supply port for supplying external air toward the space between the inner surface of the booth and the outer surface of the partition is formed in the upper portion of the space, and an exhaust port for exhausting the air in the space to the outside is formed in the space. The coating apparatus according to claim 1, wherein the coating apparatus is formed on a bottom portion. A transfer device installed outside the booth and capable of transferring a work, and the work can be transferred from the transfer device to the support arm so that the work carried by the transfer device is supported by the support arm. On the other hand, a transfer device is provided that enables the workpiece supported by the support arm to be transferred from the support arm to the transfer device so that the workpiece can be transferred by the transfer device. Item 2. The coating apparatus according to Item 1.

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