JPH0694016B2 - Coating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is capable of automatically and accurately applying a coating liquid to each predetermined position of a plurality of types of skeletons having different cross member lengths. The present invention relates to a coating device capable of increasing the coating speed and speeding up the coating operation.

[Conventional technology]

For example, for face materials used for electrical / mechanical products, furniture products such as cabinets, etc., as a base frame, a substantially rectangular frame-shaped frame structure in which a plurality of horizontal members are bridged between a pair of parallel vertical members is used. Often.

Further, such a frame body is generally firmly joined by welding together a steel vertical member and a horizontal member which have been subjected to anticorrosion treatment by plating, painting or the like in advance.

Therefore, in the welded portion of the skeleton where the vertical member and the horizontal member are joined, the rust prevention treatment on the surface is lost due to the welding, and as a result, rust prevention is performed at each predetermined position of the welded portion. A coating operation for spot-coating a coating liquid such as an agent is required.

[Problems to be Solved by the Invention]

However, such skeletons are diversified, such as the length of horizontal members and the pitch of erections, etc., depending on the shape and size of the surface treatment required, so the position of the weld also changes depending on the type of skeleton. To do.

Therefore, the coating work at each predetermined position which is such a welded portion cannot be automated, and is generally performed manually by a conventional worker. As a result, the coating accuracy becomes nonuniform and the coating quality is improved. At the same time, it deteriorated the coating work efficiency.

It is an object of the present invention to provide a coating device capable of accurately and automatically applying a coating liquid to each predetermined position of such a plurality of types of skeletons according to the type, and solving the above problems.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the coating apparatus of the present invention comprises a plurality of types of skeletons having a substantially rectangular shape in which a plurality of horizontal members are bridged between parallel first and second vertical members and having different horizontal member lengths. A coating device for applying the coating liquid to a predetermined position of the frame, the frame having a guide (2) for guiding the first vertical member A1 and extending vertically from the upstream side to the downstream side along the guide (2). A transfer conveyor (3) for transferring the body W, and the skeleton structure W arranged and transferred on the transfer conveyor (3)
A first detection tool (6) having a fixed sensor (5) for detecting the position of the first detection tool (6), which is located on the downstream side of the fixed sensor (5) of the first detection tool (6). It is arranged above the stopper (7) which is activated by the output and stops the transfer of the skeleton W, and the transfer conveyor (3), and can be located above the cross member B on the downstream end side of the stopped skeleton W. The second detection tool (9) and the applicator (10) arranged at a distance downstream from the second detection tool (9) are integrally provided, and by moving in the lateral direction, The second detection tool (9) includes a moving frame (11) for moving the second detection tool (9) along the horizontal material B above the horizontal material B, and the second detection tool (9) includes the moving frame (11). The first movement sensor (55), the second movement sensor (56), and the third movement sensor which are arranged from the downstream side toward the upstream side on the mounting plate (52) of The first movement sensor (55) can detect the presence or absence of the cross member B immediately below and can detect the cross member B to detect the movement frame (11) to the first detection tool ( 6) The moving frame (11) is moved in a direction to move away from it and the moving frame (11) is moved in a direction to approach when the horizontal member B is not detected. The movement sensor (56) stops the movement frame (11) by detecting the second vertical member A2, and further detects the cross member B by the third movement sensor (57) when the frame W is moved. Thus, the coating device is provided with a control device that operates the coating device (10) with a delay according to the distance between the detection position and the coating device (10).

[Action]

The skeleton transferred on the transfer conveyor is stopped with good positional accuracy by a guide and a stopper based on what is called a one-sided reference based on the first vertical member and the horizontal member on the downstream end side.

Therefore, in various skeletons having different cross member lengths, by detecting the horizontal position of the second vertical member and the vertical position of other horizontal members, for example, the intersection where the vertical members and the horizontal members intersect. It is possible to know each predetermined position for coating.

In the present invention, the second movement sensor of the moving frame that moves in the horizontal direction detects the second vertical member at the stop position during the movement, and the second movement sensor detects The applicator is positioned on the straight line where the predetermined positions are aligned in the vertical direction, and the moving frame is stopped. The first movement sensor is for determining the movement direction of the movement frame at the time of detection by the second movement sensor. At the stop position of the skeleton, the first movement sensor is located below the first movement sensor on the downstream end side. When a cross member is detected, it moves toward the second vertical member and away from the first detector, and when it does not detect, it moves toward the second vertical member and approaches the first detector. Move the frame.

That is, the first movement sensor relatively compares and determines the width dimension of the skeleton from the standby position waiting at this location, for example, the coating position where the skeleton previously carried in is applied, and the width dimension is large. When it is small, it is moved away from the first detection tool, and when it is small, it is moved toward it. By this, it is possible to directly laterally move from the application position of the previously loaded frame body to the application position of the newly loaded frame body, for example, as compared with the case where the starting point position of the movement is absolutely determined, The distance traveled can be shortened, enabling quick movement.

Further, the third movement sensor detects another cross member of the skeleton transferred by releasing the stopper when the third movement sensor passes, and the applicator has a delay depending on the distance between the detection position and the applicator. By operating, the coating liquid can be accurately and automatically applied to each predetermined position during the transfer.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 3, the coating device 1 includes a transfer conveyor 3 for vertically transferring the skeleton W, a first detector 6 for detecting the skeleton W to be transferred, and detection by the first detector 6. It comprises a stopper 7 for stopping the movement of the skeleton W, and a moving frame 11 having a second detection tool 9 and an applicator 10 and moving in the lateral direction. The coating liquid, which is a rust preventive material, is automatically applied to predetermined positions, which are the welded portions Q scattered on W, respectively.

The skeleton W is a base material for forming a face material in this example, and as illustrated in FIGS. 11A to 11D, a pair of parallel first and second vertical members A1, It has a substantially rectangular shape with multiple horizontal members B ...

Further, the skeleton body W includes various types in which the length L of the cross member B and the bridging pitch P thereof are changed according to the required face material. Further, the first and second vertical members A1 and A2 and the horizontal members B ... Are formed from steel products which have been previously subjected to rust prevention treatment.
By welding the intersections where A1 and A2 intersect each horizontal member B ..., they are firmly joined. Therefore, the welded portions Q ... Are scattered on a straight line along the first and second vertical members A1 and A2, respectively.

In the frame W, the first and second vertical members A1 and A2 and the horizontal member B1 on one end side are integrally formed by bending one long steel material into a U-shape in this example. None, therefore welding is eliminated at the intersection of the first and second longitudinal members A1, A2 and the transverse member B1. Further, FIGS. 11 (a) and 11 (b) exemplify a skeleton W having an entrance corner R on the other end side, and even in the skeleton W, the entrance corner R is folded into a Z shape. By using the bent transverse members B2, the welded portion Q is aligned with the welded portions Q of the other transverse members B ...

The frame W formed in this way is transferred to the transfer conveyor 3
The horizontal member B1 is transferred in the vertical direction toward the downstream side by the use of the applicator 10 for the welded portion Q2, which is arranged along the second vertical member A2, and the first vertical member A1 is used. Welds lined up along
The coating liquid is applied to each of Q1 using the applicator 13.

As shown in FIGS. 1 to 3, the transfer conveyor 3 is a carry-in conveyor section 3A for carrying the skeleton W into a coating operation position.
And a carry-out conveyor section 3B that is continuously connected to the carry-in conveyor section 3A so as to be transferable and carries out the skeleton W from the coating work position. At the coating work position, a coating booth 15 that surrounds the transfer conveyor 3 is formed. To be done.

The coating booth 15 has side walls 17A and 17B on the upstream side surface and the downstream side surface of the gate-shaped body extending over the transfer conveyor 3, respectively.
It has a base chamber 14 for forming a coating chamber, which is closed with the side walls 17A and 17B.
Rectangular holes 18A and 18B for loading and unloading, through which the skeleton W passes, are transparently provided in each.

The carry-out conveyor section 3A includes a mounting table 19A adjacent to the upstream side of the coating booth 15 and a parallel side frame 2 arranged on the upper surface thereof.
A transfer tool 22A in the form of a roller conveyor in which drive rollers 21 ... Are arranged in parallel between 0 and 20, and the transfer tool 22A is arranged with its downstream end facing the rectangular hole 18A. Further, a guide 2 including a plurality of cylindrical guide pieces 2A ... Standing up from the mounting table 19A along one side frame 20 is attached to the carry-out conveyor section 3A.

Further, the carry-out conveyor section 3B has substantially the same structure as the carry-out conveyor section 3A, and is provided with a mounting table 19 adjacent to the downstream side of the coating booth 15.
A transfer tool 22B is provided on B, passing through the rectangular holes 18A and 18B, traversing the interior of the coating booth 15 and having its upstream end linearly connected to the downstream end of the transfer tool 22A.

Therefore, the transfer conveyor 3 moves the first vertical member A1 to the inner edge of the guide 2 by the guide pieces 2A ... Moving above the horizontal transfer surface S connecting the upper edges of the drive rollers 21. The skeleton W can be vertically transferred from the upstream side to the downstream side while being guided along the skeleton W, and the skeleton W is carried into the coating booth 15 from the rectangular hole 18A while being unloaded from the rectangular hole 18B. In this example, the transfer conveyor 3 is arranged on the upstream side so that the frame W can be accurately transferred along the guide 2 by driving rollers 21a ...
.. toward the guide 2 and is inclined in the horizontal plane.

A first detector 6 for detecting the skeleton W to be transferred and a stopper 7 for stopping the movement of the skeleton W by the detection are arranged in the carry-in conveyor section 3A, and also move to the coating booth 15. A frame 11 is provided.

The first detection tool 6 is located above the transfer surface S and also on the guide 2
Has a fixed sensor 5 fixedly arranged inside, and in this example, the fixed sensor 5 is fixed to the other end of the support arm 25 whose one end is supported by the side wall 17A with its sensor surface facing downward. To be done. A non-contact type detection sensor, for example, a direct reflection type photoelectric sensor can be preferably used as the fixed sensor 5, and the cross member B1 on the downstream end side of the skeleton W crosses under it to pass the skeleton W. To detect.

As the fixed sensor 5, various types such as contact type and non-contact type can be used, and the sensor surface may be fixed below the transfer surface S with the sensor surface facing upward.

Further, the stopper 7 is formed of a cylinder 7A which is located on the downstream side of the fixed sensor 5 and is arranged in a direction perpendicular to the guide 2 and which is expandable / contractible in the present example. It is supported with the rod facing upward.
Further, the stopper 7 is actuated by the detection output of the fixed sensor 5 via the control device 60, and extends the rod from a standby state in which it is kept below the transfer surface S to an operating state in which it is overturned above. Therefore, the stopper 7 stops the movement of the skeleton W at the stop position K1 where the cross member B1 contacts the rod in the operating state.

The moving frame 11 is a moving means provided in the coating booth 15.
Backed by 27. The coating booth 15 is divided into a lower coating room and an upper machine room inside the base chamber 14 by an intermediate plate 28 which passes above the transfer conveyor 3 and is installed between the side walls 17A and 17B. A moving means 27 is arranged in the room.

The moving means 27 includes a rail tool 30 that is installed between the side plates of the base chamber 14 and extends horizontally in the lateral direction, a traveling tool 31 guided by the rail tool 30, and a driving tool 32 that drives the traveling tool 31. Equipped with.

In this example, the rail member 30 is a web 30A as shown in FIG.
The upper and lower flanges 30B and 30C are formed of channel steel having upper and lower flanges 30B and 30C, and rail pieces 33 are laid on the upper surface of the upper flange 30B and the lower surface of the lower flange 30C, respectively.

The running tool 31 includes a wheel 35 with a flange that rolls on the rail piece 33 above and below a running base 35A that is parallel to the web 30A.
B is pivotally attached.

The driving tool 32 has a pair of chain wheels 36, 36 pivotally supported by the web 30A of the rail tool 30 with a space therebetween, and an endless string 37 wound between the chain wheels 36, 36. Then, one running line of the endless string 37 is connected to the running base 35A via a connecting plate 38.

On the other hand, one chain wheel 36 is attached to the output shaft of the electric motor M, which is flanged to the intermediate plate 28, so that the traveling tool 31 can reciprocate in the lateral direction by the forward rotation and the reverse rotation of the electric motor M. In this example, the traveling tool 31 is provided with an actuator 39 projecting outward from the traveling base body 35A, and the middle plate 28 is provided with a pair of actuators 39 that restrict the traveling range of the traveling tool 31 by colliding with the actuator 39. Limit switch SW is arranged.

The moving frame 11 is attached to the running tool 31.

As shown in FIGS. 4 to 5, the movable frame 11 is composed of a pair of support shafts 40A and 40A, the upper end of which is fixed to the traveling base 35A and the lower end of which penetrates the intermediate plate 28 and hangs downward. Hanging frame part
40, and a base frame body 45 consisting of a horizontal frame portion 43 extending horizontally in the lower part of the hanging frame portion 40 and horizontally supported integrally via a connecting metal fitting 42. The base frame body 45 in this example, The reinforcing frame portion 46 parallel to the horizontal frame portion 43 enhances the frame rigidity and the horizontal frame portion.
43 is firmly supported horizontally. Incidentally, the hanging frame portion 40,
By inserting the hole 47 that is transparently provided in the middle plate 28, the traveling tool
The intermediate plate 28 is penetrated over the entire traveling area of 31.

Further, the upstream side end 43A and the downstream side end 43B of the horizontal frame portion 43 project to the outside of the coating booth 15 through laterally long insertion holes 49A, 49B formed in the side walls 17A, 17B, respectively, and the upstream side end 43A. The second detector 9 is attached to the lower end of the hanging frame 40, and the third detector 12 is attached to the downstream end 43B in this example.
Ten are provided. Therefore, the applicator 10 is arranged at a distance downstream from the second detector 9.

The second detection tool 9 has a mounting plate 52 that is supported in a vertically adjustable manner via a joint fitting 50 provided at the upstream end 43A.
In addition, the first, second, and third movement sensors 55, 56, and 57 arranged obliquely from the downstream side toward the upstream side toward the first detection tool 6 are attached with their sensor surfaces facing downward.

Like the fixed sensor 5, the movement sensors 55, 56, 57 are each formed of a non-contact type detection sensor such as a direct reflection type photoelectric sense, and the first and second movement sensors 5
As shown in FIG. 6, 5 and 56 are electrically connected to the electric motor M via the control device 60, while the third movement sensor 57 is connected to the control device 60.
It is conducted to the applicator 10 via.

The first movement sensor 55 is arranged as shown in FIGS. 8 (a) and 8 (b) so that it can be located on the transverse member B1 on the downstream end side of the framework W stopped by the stopper 7. The presence / absence of the horizontal member B1 below the first movement sensor 55 at the stop position K1 is detected. When the first movement sensor 55 detects the horizontal member B1, that is, when the length L of the horizontal member B1 is long,
The detection output operates the electric motor M via the control device 60 to move the moving frame 11 in the direction f1 away from the first detection tool 6.

Further, when it is not detected, that is, when the length L of the cross member B1 is short, the electric motor M is operated in the opposite direction to move the moving frame 11 in the approaching direction f2.

The second movement sensor 56 is arranged on the upstream side of the first movement sensor 55 and on the side closer to the first detection tool 6 from the first movement sensor 55. The second vertical sensor A2 is detected, and the detection output of the second vertical sensor A2 controls the electric motor M through the control device 60 so that the second movement sensor 56 moves at the detection position U3 located on the second vertical member A2.
Stop 11 Therefore, the second movement sensor 56 is more preferably arranged on the upstream side of the horizontal member B1 at the stop position K1 and in such a manner that the distance d exceeding the vertical member width w does not occur between the second movement sensor 56 and the first movement sensor 55. It

Further, the third movement sensor 57 is provided on the upstream side of the second movement sensor 56 and further from the second movement sensor 56 to the first detection tool 6.
Is arranged on the side closer to the horizontal member B when the frame W is moved.
The application tool 10 is operated with a delay according to the distance H2 between the detection position U2 and the application tool 10, and the application liquid is automatically applied to each of the welding portions Q2. . A well-known automatic spray gun can be suitably used as the applicator 10, and more specifically, the applicator 10 has its discharge port 10a and the second movement sensor 56 located on the second vertical member A2. At the detection position U3, it is positioned on a straight line connecting the welded portions Q2 ... And fixed to the moving frame 11.

Further, at the downstream side end 43B of the horizontal frame portion 43, similarly, a mounting plate 52
The fourth movement sensor 58 is disposed at a distance downstream from the applicator 10 via the.

The fourth movement sensor 58 is a well-known color tone identification sensor in this example, and identifies the color of the coating liquid applied from the applicator 10 to each welding portion Q2 when the skeleton W is moved. Detects breaks and coating defects and improves quality.

Further, in the present example, the applicator 13 whose discharge port is located on the straight line connecting the welded portions Q1 ... Is fixed to the lower end of the column 61 that hangs from the intermediate plate 28.

Note that, in the present example, the fixed sensor 5 also functions as a detection sensor that detects the cross member B when the skeleton W moves, as in the case of the third movement sensor 57, and the detection position U1 and the applicator 13 The coating portion 13 is operated with a delay corresponding to the distance H2 between the welding portion Q1 and the welding portion Q1 and the coating liquid is applied to each welding portion Q1 while the skeleton W is moving.

The delay is calculated by the distances H1 and H2 and the transfer speed of the frame W.

However, as shown in FIG. 7 (a), the first longitudinal member A1 of the skeleton W with the horizontal member B1 directed to the downstream side is guided in by the guide 2, and at the time of carrying in the first member A1. Detection tool 6
Detects the cross member B1, and the stopper 7 activated by this detects the skeleton W at the stop position K1 where the first vertical member A1 is along the guide 2 and the cross member B1 is along the stopper 7. Then, the moving frame 11 moves at the stop position K1.

As shown in FIG. 7 (b), the moving frame 11 is provided with a horizontal member B1 below it by the first moving sensor 55 of the second detector 9.
The presence or absence of the horizontal member B1 is detected, and when the horizontal member B1 is detected, in the direction f1 away from the first detecting tool 6, and when it is not detected, the second detecting tool is moved in the direction f2 approaching the first detecting tool 6. The second movement sensor 56 of 9 laterally moves up to the detection position U3 located on the second vertical member A2.

That is, the moving frame 11 relatively judges the width of the skeleton W relative to the width of the skeleton Wa to which the application has been performed, and directly moves from the previous detection position U3a to the new detection position U3. . Therefore, this one can reduce its moving distance as compared with, for example, an absolute starting position of the moving frame 11 and moving from the starting position to each detection position U3, and various transverse member lengths L are different. In the skeleton structure W, it is possible to greatly speed up the movement thereof.

The detection position U3 is also a position for application work in which the applicator 10 is aligned with the welded portions Q2 ....

After the moving frame 11 has stopped at the detection position U3 as described above, the control device 60 releases the stopper 7 and moves the frame W on the transfer conveyor 3 at a constant speed.

Further, at the time of the movement, the third movement sensor of the second detection tool 9
57 detects each cross member B ... while passing through it, and the control device 60 activates the applicator 10 with a delay corresponding to the distance H2 between the detection position U2 and the applicator 10, and during the movement. The coating liquid can be accurately and automatically applied to a predetermined position of each weld Q2.

Similarly, the applicator 13 operates with a delay due to the detection of the cross member B ... By the fixed sensor 5, and can apply to each weld Q1.

In the present invention, for example, as schematically shown in FIGS. 10 (a) and 10 (b), the moving body 63 that moves in the same direction and in the same phase as the moving frame 11 in phase is interlocked with the moving frame 11. Conveyor 3
While the applicator 64, which is disposed below and is opposed to the applicator 10 is attached to the moving body 63, the applicator 13 is similarly installed in the coating booth 15.
You may fix the applicator facing. In such a case, the coating liquid can be simultaneously applied from the front and back of the skeleton W.

In the present invention, the stop position is used when the stopper 7 is released.
The applicator 10 may be operated with a delay according to the distance between the K1 and the applicator 10, and the application may be performed at the intersection of the horizontal member B1 and the second vertical member A2. However, in such a case, the skeleton W has not reached a stable speed when the stopper 7 is released, and therefore, it is preferable to further consider the delay of the rising speed of the skeleton W in the operation of the applicator 10.

In addition to the base frame for forming the face material, various structures such as a window frame, a handrail frame, and a gate can be adopted as the frame W, and an appropriate position other than the welded portion can be selected as the predetermined position.

〔The invention's effect〕

Since the coating device of the present invention is configured as described above, the coating liquid can be accurately and efficiently automatically applied to each predetermined position of a plurality of types of skeletons having different cross member lengths to improve the coating quality and the coating work. Can be speeded up.

[Brief description of drawings]

1 is a front view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a side view thereof, FIG. 4 is a perspective view showing a moving means, and FIG. 5 shows a moving frame. A perspective view, FIG. 6 is a schematic diagram schematically showing the present invention, FIG. 7 (a) is a schematic diagram showing the action of the first detector, and FIG. 7 (b) is a second detector. 8A and 8B are schematic diagrams showing the moving state of the second detection tool in an enlarged manner, and FIG. 9 is a schematic diagram showing the operation of the third movement sensor. Diagrams, FIGS. 10 (a)-(b) are diagrams showing another embodiment of the present invention, and FIGS. 11 (a)-(d).
[Fig. 3] is a plan view illustrating a skeleton structure. 2 ... Guide, 3 ... Transfer conveyor, 5 ... Fixed sensor, 6 ... First detection tool, 7 ... Stopper, 9 ... Second detection tool, 10 ... Application tool, 11 ... Move Frame, 55 ... first movement sensor, 56 ... second movement sensor, 57 ... third movement sensor, 60 ... control device, A1 ... first longitudinal member, A2 ... second Vertical material, B ... Horizontal material, L ... Horizontal material length, W ... Frame structure.

Claims (1)

[Claims] 1. A coating method for applying a coating liquid to a predetermined position of a plurality of types of skeletons having a substantially rectangular shape in which a plurality of horizontal members are bridged between parallel first and second vertical members and having different horizontal member lengths. A transfer conveyor (3) having a guide (2) for guiding the first vertical member A1 and vertically transferring the skeleton W from the upstream side to the downstream side along the guide (2). The frame W arranged on the transfer conveyor (3) and transferred
A first detection tool (6) having a fixed sensor (5) for detecting the position of the first detection tool (6), which is located on the downstream side of the fixed sensor (5) of the first detection tool (6). It is arranged above the stopper (7) which is activated by the output and stops the transfer of the skeleton W, and the transfer conveyor (3), and can be located above the cross member B on the downstream end side of the stopped skeleton W. The second detection tool (9) and the applicator (10) arranged at a distance downstream from the second detection tool (9) are integrally provided, and by moving in the lateral direction, The second detection tool (9) includes a moving frame (11) for moving the second detection tool (9) along the horizontal material B above the horizontal material B, and the second detection tool (9) includes the moving frame (11). The first movement sensor (55), the second movement sensor (56), and the third movement sensor which are arranged from the downstream side toward the upstream side on the mounting plate (52) of The first movement sensor (55) can detect the presence or absence of the cross member B immediately below and can detect the cross member B to detect the movement frame (11) to the first detection tool ( 6) The moving frame (11) is moved in a direction away from the horizontal frame B when the horizontal member B is not detected, and a second frame is moved when the moving frame (11) is moved by the first moving sensor (55). The movement sensor (56) stops the movement frame (11) by detecting the second vertical member A2, and further detects the cross member B by the third movement sensor (57) when the frame W is moved. The applicator comprising a controller for operating the applicator (10) with a delay according to the distance between the detection position and the applicator (10).