JPH0410934Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a coating machine attached to an elevating frame that lifts and lowers the upper surface of an object to be coated, which is conveyed at a predetermined speed by a conveyor or the like, according to changes in the shape of the object. The present invention relates to an automatic painting device that performs painting by a method of painting.

[Prior art and its problems]

As shown in FIG. 3, this type of automatic painting apparatus has an elevating frame 31 on which the painting machines 30A and 30B are attached, which is arranged horizontally in line with the conveyance path of the object W to be painted, and whose ends are supported by supports 32R, The object W to be coated is supported by elevating bodies 33R and 33L that move up and down along the line 32L, and is automatically raised and lowered according to the top surface shape of the object W to be coated.

A coating machine 30 is mounted on the elevating frame 31.
A slider 34 and a motor 35 for driving the slider are attached to which the sliders A and 30B are attached and reciprocated at a predetermined stroke in the width direction of the object W to be coated.

For this reason, the elevating frame 31 has a slider 34
Since the load of the lift frame 31 and the motor 35 are applied to it, and it has to be made strong enough to withstand the load, the overall weight increases significantly. 36 capacity and power consumption were increasing.

Therefore, the present invention aims to reduce the weight of the entire lifting frame 31 by eliminating the heavy slider 34 and motor 35 from the lifting frame 31.

[Means for solving problems]

In order to achieve this purpose, the present invention has developed an elevator frame that is arranged horizontally perpendicular to the conveyance path of the object to be coated, and is movable up and down along a support. In an automatic coating device that is supported by a body and automatically moves up and down according to changes in the upper surface shape of the object to be coated, a parallel coating machine in which the coating machine makes a pendulum movement in a direction perpendicular to the transport path of the object to be coated. A crank device that is suspended from the link and drives the parallel link is attached to the elevating body, and a drive chain that is stretched between a pair of sprockets disposed above and below the support column is connected to the crankshaft of the crank device. It is characterized by being wrapped around a coaxial sprocket.

[Effect]

According to the present invention, if the parallel link that suspends the paint sprayer is made to make a pendulum motion using the crank device attached to the lifting body, the paint sprayer attached to the lift frame will reciprocate in the width direction of the object to be coated. . Also,
A crank device is driven by a drive chain running around a sprocket coaxially provided with the crankshaft.

Therefore, the load of the slider that reciprocates the coating machine and the motor that drives the slider, which is conventional, is not applied to the elevating frame, and the weight of the elevating frame is significantly reduced.

〔Example〕

Hereinafter, embodiments of the present invention will be specifically described based on the drawings.

FIG. 1 is a front view showing an example of an automatic painting apparatus according to the present invention, and FIG. 2 is a front view showing another embodiment.

In FIG. 1, the elevating frame 2 to which the paint sprayers 1A and 1B are attached is arranged horizontally orthogonally to the conveyance path of the object W to be coated, and its left and right ends are movable up and down along support columns 3R and 3L. A parallel link 6 is attached to each bracket 5 of the elevating bodies 4R and 4L arranged in the
It is supported via R and 6L, and is configured to automatically move up and down in response to changes in the top surface shape of the object W to be coated.

In other words, the coating machine 1 attached to the lifting frame 2
A and 1B are suspended by a pair of parallel links 6R and 6L.

The parallel links 6R and 6L are configured to be driven by a crank device 7 attached to the elevating body 4R, which is attached to make pendulum movement in a direction perpendicular to the conveyance path of the object W to be coated. .

The crank device 7 includes a crank 8 provided on the elevating body 4R, a connecting rod 9 that connects the crank 8 and the link 6R, and a crankshaft 10.
and a sprocket 11 provided coaxially.

A guide rail 12 that supports the elevating bodies 4R and 4L, respectively, and a pair of sprockets 13U and 13D or 14U and 14D are disposed on the upper and lower pillars 3R and 3L, respectively. An endless drive chain 15 connected to the body 4R is hung in parallel, and an endless drive chain 16 whose both ends are connected to the elevating body 4L is hung in parallel between the sprockets 14U and 14D.

Incidentally, the sprockets 13U and 13D are rotationally driven by a lifting drive motor 17 connected to the sprocket 13D, and the sprockets 14U and 14
D is sprocket 13U and sprocket 14U
It is designed to be rotationally driven by a synchronizing rod (not shown) connected between the two.

Further, a pair of sprockets 18U and 18D are arranged above and below the support column 3R, and a drive chain 19 that is connected in parallel between the sprockets 18U and 18D is connected to the sprocket 11 of the crank device 7.
It is also widely used.

Note that 20 is a motor that rotationally drives the sprocket 18D.

The above is the configuration of the automatic painting apparatus shown in FIG. 1, and its operation and effects will now be explained.

When painting the upper surface of the object W to be painted, the lifting frame 2 is moved up and down by rotating the lifting drive motor 17 in forward and reverse directions to move the lifting bodies 4R and 4L up and down. The coating distance between the coating machines 1A, 1B attached to the lifting frame 2 and the painting surface is maintained constant by raising and lowering them according to changes in the shape.

At the same time, the motor 20 is driven to rotate in a certain direction to run the drive chain 19 that is stretched between the sprockets 18U and 18D, and the drive chain 19 is installed coaxially with the sprocket 11 that is stretched around it. Rotate crank 8,
Parallel links 6R and 6L connected to the crank 8 via a connecting rod 9 are caused to swing in a pendulum motion.

As a result, the elevating frame 2 suspended from the parallel links 6R and 6L swings in a direction perpendicular to the transport path of the object W to be coated while maintaining a horizontal state, and the coating machine attached to the elevating frame 2 is rotated. 1A, 1B
moves reciprocatingly in the width direction of the object W to be painted,
A uniform coating is applied to the entire upper surface of the

Therefore, the lift frame 2 is not subject to the load of the slider that reciprocates the paint sprayer or the motor that drives it, as in the past, and there is no need for it to have a sturdy structure to support these loads. Therefore, the weight of the entire lifting frame 2 can be significantly reduced.

Therefore, it is possible to reduce the capacity of the motor 16 that moves the elevating bodies 4R, 4L up and down, thereby reducing the equipment cost, and at the same time, it is possible to significantly reduce the power consumption.

Furthermore, since the sprocket 11 of the crank device is configured to be rotated by a drive chain 19 that is connected in parallel between the sprockets 18U and 18D, the vertical movement of the elevating body 4R that supports the elevating frame 2 is controlled. The crank 8 can be rotated following this.

Note that the coating machine is not limited to the case where it is attached to the elevating frame 2 suspended from the parallel links 6R, 6L, and as shown in FIG. frame 2
It may be attached to.

That is, in FIG. 2, the elevating frame 2
Three pairs of parallel links 21R and 21L are attached to each of the three pairs of parallel links 21R and 21L, and paint machines 1A, 1B and 1C are suspended from the lower ends of each of the parallel links 21R and 21L, respectively.

Only one end of the elevating frame 2 is supported by the elevating body 4 of the support column 3.

The pillar 3 has a pair of upper and lower sprockets 13U,
13D, and an endless drive chain 15 connected to the elevating body 4 at both ends is hung in parallel between the sprockets 13U and 13D.

The sprocket 13D is connected to the lifting motor 17, and the drive chain 15 is provided with a counterweight 22 that balances the load of the lifting frame 2.

Further, a pair of sprockets 18U and 18D are disposed on the upper and lower sides of the support column 3, and a drive chain 19 extending in parallel between the sprockets 18U and 18D connects to the sprocket 11 of the crank device 7.
It is being passed around.

The coating machines 1A, 1B, and 1C are connected to tilt motors 23 provided at the lower ends of parallel links 21R and 21L, respectively, and adjust the coating surface of the workpiece W to be aligned according to changes in the shape of the workpiece W. It is tilt-driven so that the

Parallel link 21 that suspends the central coating machine 1B
The upper ends of R and 21L are fixed to the center position of the lifting frame 2.

Further, the upper ends of each of the parallel links 21R and 21L that suspend the left and right paint machines 1A and 1C are slidably supported by a slide base 25R by a guide shaft 24 horizontally arranged along the longitudinal direction of the elevating frame 2. , 25L.

The slide bases 25R and 25L are screwed onto both ends of a screw shaft 26 having left and right reverse threads, and a width adjusting motor 27 that rotationally drives the screw shaft 26 moves the paint sprayers 1A and 1C toward or away from each other. It is made to move.

In addition, one link 21 that suspends the coating machine 1A is
R is connected by a rod 28a to one link 21L that suspends the sprayer 1B in the center, and one link 21L that suspends the sprayer 1C is connected to the link 21L that suspends the sprayer 1B in the center.
The other link 21R and rod 28b that suspend B
are connected. Furthermore, a connecting rod 9 of a crank device 7 attached to the elevating body 4 is connected to the other link 21R that suspends the coating machine 1C.

Note that 29 is a control device that controls the rotation direction and rotation speed of the width adjustment motor 27 according to the coating width of the object W to be coated.

The above is the configuration of the automatic painting apparatus shown in FIG. 2, and its operation and effects will be explained next.

When painting the upper surface of the object W, the coating machines 1A, 1B and 1C are used in advance according to the coating width of the object W.
Adjust the spacing between them. That is, by rotationally driving the screw shaft 26 by the width adjustment motor 27 and moving the slide bases 25R and 25L, which are screwed together with the screw shaft 26, by a certain distance in the direction toward or away from each other, the coating machines 1A and 1C are moved toward or away from each other depending on the coating width of the object W to be coated.

At this time, for example, if the slide bases 25R and 25L are brought close to each other, the left and right paint machines 1
Each parallel link 21R suspending A and 1C,
21L is a rod 28 connected between parallel links 21R and 21L that suspends the central coating machine 1B.
Painting machines 1A and 1 are mounted using parts a and 28b as fulcrums.
C incline in a direction that separates them from each other.

In this way, each coating machine 1A, 1B and 1C
When the interval adjustment is completed, painting starts, and the lifting frame 2 is moved up and down by rotating the lifting drive motor 17 in the forward and reverse directions to move the lifting body 4 up and down.
is raised and lowered according to changes in the upper surface shape of the object W to be painted, thereby maintaining a constant coating distance between the painting surfaces and the painting machines 1A, 1B, and 1C attached to the lifting frame 2, and The paint machines 1A, 1B, and 1C are tilted by the motor 23 so as to directly face the painting surface.

At the same time, the motor 20 is driven to rotate in a certain direction to run the drive chain 19 that is stretched between the sprockets 18U and 18D, and the drive chain 19 is installed coaxially with the sprocket 11 that is stretched around it. Rotate crank 8,
A connecting rod 9 that converts the rotational motion of the crank 8 into a linear reciprocating motion causes the parallel links 21R and 21L that suspend the paint sprayer 1C to perform pendulum motion.

As a result, the parallel links 21R and 21L that suspend the paint sprayers 1A and 1B are also connected to the rods 28a and 28.
The paint machines 1C and 1B are linked together via b.
The coating machines 1A, 1B, and 1C reciprocate in the width direction of the object W to be coated by pendulum movement in the same direction as the parallel links 21R and 21L that suspend them, and uniform coating is applied to the entire upper surface of the object W to be coated. It will be carried out.

In this way, the elevating frame 2 shown in FIG. Only a lightweight motor 27 for adjusting the width is provided, and a slider for reciprocating the paint sprayer and a relatively large motor for driving the slider are not provided as in the conventional case. It can be made lighter.

Therefore, it is possible to reduce the capacity and power consumption of the lifting drive motor 17 that moves the lifting body 4 up and down, and at the same time, it is possible to support only one end side of the lifting frame 2 by one support 3. Equipment costs and installation space for the entire coating equipment are significantly reduced.

[Effect of idea]

As described above, according to the present invention, there is no need to provide a slider for reciprocating the paint sprayer or a motor for driving the slider on the lifting frame to which the paint sprayer is attached and which moves up and down, making the lift frame as a whole significantly lighter. It has the excellent effect of being able to be transformed into

Therefore, it is possible to significantly reduce the capacity and power consumption of the motor that drives the lifting frame up and down, and it is also possible to support the lifting frame with a single support, reducing the equipment cost and installation of the entire coating equipment. Space can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of an automatic coating apparatus according to the present invention, FIG. 2 is a front view showing another embodiment of the invention, and FIG. 3 is a front view of a conventional apparatus. Explanation of codes, 1A, 1B, 1C...Painting machine, 2
... Lifting frame, 3, 3R, 3L... Support column,
4, 4R, 4L elevating body, 6R and 6L...Parallel link, 7...Crank device, 8...Crank 9...
... Connecting rod, 10 ... Crankshaft, 1
1... Sprocket, 18U, 18D... Sprocket, 19... Drive chain, 20R and 20
L...Parallel link, W...Object to be painted.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The elevating frame to which the coating machine is attached is disposed horizontally orthogonally to the conveyance path of the object to be coated, and
In an automatic coating device that is supported by an elevating body that is movable up and down along a support column and that automatically moves up and down according to changes in the top surface shape of the object to be coated, the coating machine moves the object to be coated. It is suspended from a parallel link that makes a pendulum motion in a direction perpendicular to the transport path of the object, and a crank device that drives the parallel link is attached to the elevating body, and is hung between a pair of sprockets disposed above and below the support. An automatic painting device characterized in that the passed drive chain is wound around a sprocket provided coaxially with the crankshaft of the crank device. (2) The automatic coating apparatus according to claim 1, wherein the coating machine is attached to the lifting frame suspended from the parallel link. (3) The automatic coating apparatus according to claim 1, wherein the coating machine is attached to the elevating frame via the parallel link.