JPH0583145B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention particularly facilitates the inspection of continuously transported plate-like workpieces, and also allows inspection workpieces, defective product determination workpieces, etc. to be transferred to other workpieces. The present invention relates to a workpiece inspection device that can be extracted from a conveyance line without interfering with workpieces, can improve inspection accuracy, and can improve inspection work efficiency and production efficiency.

[Conventional technology]

For example, in the production of painted products, appearance products, etc., visual appearance inspections are often performed on the line to prevent defective products with scratches, uneven coating, etc. from being shipped.

[Problem to be solved by the invention] However, in this type of appearance inspection, for example, when the product is a large plate-like object such as architectural wall material or flooring material, oblique visual inspection is likely to be required, and furthermore, the lighting Coupled with reflections, etc., it is extremely difficult to detect scratches, uneven paint, etc. Moreover, it takes time and effort to remove defective products from the conveyor line because they are large products.
Therefore, there was a problem that production efficiency was lowered, such as requiring a temporary stop of the conveyance line.

The present invention has been made in view of these problems, and its purpose is to provide a support that is lower than the conveyance surface in the inverted state and allows the workpiece to pass below it in the flipped up state. The purpose of this work is to provide a workpiece inspection device that uses the human arm to improve inspection accuracy and improve inspection work efficiency and production efficiency.

[Means to solve the problem]

In order to achieve the above object, the workpiece inspection apparatus 1 of the present invention is capable of transporting a plate-shaped workpiece W, and has a concave surface extending across the transport conveyor 3 at an interval smaller than the length of the workpiece W in the transporting direction. The conveyor 3 has the seats 2 and 2 on the conveyor surface, and one end of the conveyor 3 is pivotally supported on one side of the conveyor 3 so as to be able to flip up diagonally and tilt freely, and when it is turned upside down, it fits into the recess 2, and the upper surface 5A is on the conveyor surface. a support arm 5 that is located at a lower position than S and that allows the workpiece W to pass between the lower surface 5B and the conveyance surface S by flipping up; and a drive that is attached to the support arm 5 and causing the support arm 5 to flip up and tilt. A work diagonal lifting device 7 consisting of a machine 6 is provided.

[Means to solve the problem]

When it is necessary to inspect and judge the workpiece W transported using the transport conveyor 3 configured as described above, the workpiece diagonal lifting device 7 is operated and the workpiece W
bounce up. Since the workpiece W is held diagonally by the support arm 5 with its surface directly facing the operator, visual inspection etc. can be performed with high accuracy and efficiency, and the workpiece W can be returned to the line after inspection. Makes removal work easier.

Furthermore, since other workpieces W can pass below the support arm 5, there is no need to stop the line for inspection or removal, and production efficiency can be improved. In addition, the support arm 5
The work W held diagonally upward is convenient for performing various inspections such as metrological inspection, and is useful for improving inspection efficiency and accuracy. It can also be suitably used for sampling.

〔Example〕

Hereinafter, when the workpiece inspection device 1 of the present invention is employed in a painting line L for plate-shaped workpieces W, which are external wall materials for construction, for example, and inspects the workpieces W after color coating and the workpieces W after drying. will be explained based on the drawings by taking as an example.

As shown in FIG. 4, in this example, the coating line L is a first line that applies color coating to the base materials, and is connected to the alignment conveyor B that leads to the carry-in conveyor A for inputting the base materials.
A coating device C1 and a first workpiece inspection device 1 for inspecting the coating quality are installed in series, and a first workpiece inspection device 1 for drying the coated workpiece W is installed downstream of the first workpiece inspection device 1. A drying oven D1 and a second workpiece inspection device 1 for inspecting the dried workpiece W are provided. Furthermore, in the painting line L, downstream of the second workpiece inspection device 1, there is a second coating device C2 that applies clear coating to the workpiece W after color coating;
A second drying oven D2 and a discharge conveyor E are provided. Therefore, in this example, the quality of the workpiece W to be colored is inspected before and after drying.

In Fig. 1, a workpiece inspection device 1 of the present invention is shown.
The conveyor 3 is provided with a workpiece diagonal lifting device 7 consisting of a support arm 5 and a drive device 6.

In this example, the conveyor 3 includes a plurality of rollers 12 between a pair of side frames 10, 10 facing parallel to each other.
This is a so-called chain-driven roller conveyor in which the rollers 12 are rotatably pivoted, and the work W is conveyed on the upper surface of the rollers 12.

The side frame 10 includes a plurality of side frame pieces 15 arranged in a straight line with a gap d between the end portions 15A, 15A,
The adjacent ends 15A, 15A of the side frame piece 15
It consists of a leg piece 17 having a connecting piece 16 on its upper end that connects the gap on its lower surface, and in this example, at least one leg piece 17.
The two side frame pieces 15B are set to be shorter than the length of the workpiece W in the conveyance direction. Therefore, conveyor 3
The gaps d1, d2 at both ends of the side frame piece 15B provided on one side frame 10 are the gaps d1, d2 on the other side frame 10.
2, a recess that crosses the conveyor 3 with an interval smaller than the length of the workpiece in the conveying direction due to the pair of facing gaps d1, d1 and d2, d2 and the gap between the rollers 12... 2,2
is formed.

The conveyor 3 also has a roller 12 which has a bearing piece or the like between the side frames 10 and has a chain wheel 20 on one side via a pivot fitting 19 installed above the side frame piece 15. ..., and the roller 12 is operated by a chain drive means 11 linked to the chain wheel 20.

In this example, the chain drive means 11 is, for example, a second
As schematically shown in the figure, a chain wheel 21 is attached to the output shaft of the electric motor M below the conveyor 3, and a chain wheel 21 is pivoted at approximately the center of the inner surface of the side frame piece 15B, on both sides thereof, and at both ends thereof up and down. 22A, 22B, 22C, 2
2D, chain wheels 23A, 23B pivotally supported on both ends of the inner surface of the connecting piece 16, and adjacent ends of the inner surface of the other side frame piece 15 adjacent to the side frame piece 15B, and pivots on the upper and lower sides, inside thereof, and at the other end. Supporting chain wheels 25A, 25B, 25
C, 25D, and an endless chain 26 wound around the chain wheels 21 to 25D, and by meshing the running line 26A on the endless chain 26 with the chain wheel 20, the rollers 12... can rupture.

Furthermore, in this example, by providing the chain wheels 22D and 25B, the upper running line 26A can be formed with the cross section P crossing the recess 2 facing downward, thereby preventing collision with the work diagonal lifting tool 7, which will be described later. It is prevented.

The conveyor 3 is also provided with mounting plates 30, 30 that are attached to the connecting piece 16 of one side frame 10 and extend outward through the gaps d1, d2. A workpiece diagonal lifting tool 7 is tiltably attached to a vertical piece of the U-shaped frame 29. The mounting plate 30 is reinforced by a diagonal piece 28 extending obliquely from the lower surface of the distal end to the leg piece 17.

In this example, the workpiece diagonal lifting tool 7 has one end pivotally supported by the U-shaped frame 29 and the other end that extends across the conveyor 3 along the recess 2 and is connected to the joint piece 32.
The support arm 5 is provided with a U-shaped support arm 5 having a pair of arm pieces 31, 31 connected by a U-shaped support arm 5. Also, the arm piece 31
is the recess 2 in the tilted inverted state Q1.
The upper surface 5A is lower than the conveyance surface S, and the end position Q of the tilting movement is reached.
2, the lower surface 5B is at a higher position than the conveyance surface S, and the lower portion 31A, which allows the workpiece W to pass between the lower surface 5B and the conveyance surface S, is separated from the higher portions 31B at both ends by an inclined step. It is formed by Note that the workpiece diagonal lifting tool 7 is pivoted perpendicularly to the conveyance direction, and is flipped up diagonally from the inverted position Q1 to the flip-up end position Q2 by a driver 6 connected to the joint piece 32.

In this example, the drive machine 6 is a well-known advance/retreat tool such as a cylinder, and the drive machine 6 is tiltably installed.
The tip of the rod 40 pivotally supports a hanging piece 41 that hangs down approximately at the center of the joint piece 32.

However, the undried work W that has been colored by the first coating device C1 is continuously conveyed toward the downstream side by the alignment conveyor B, that is, in this example, the conveyor 2 of the first work inspection device 1. At the same time, the first workpiece inspection device 1 is, for example, a first workpiece inspection device 1.
Optical sensor installed downstream as shown in the figure
When the SW detects the tip of the work W, the conveyor 3 is stopped at a position where the work W straddles between the arm pieces 31, 31. Thereafter, the drive machine 6 is activated and, as shown in FIG. 3, the workpiece W is sprung up together with the support arm 5 to a final position Q2. In the flip-up end position Q2, the painted surface of the workpiece W faces the operator, making it easy to detect uneven coating, scratches, dust, etc., and improve visual inspection accuracy. After the inspection, the good products are returned to the conveyor 3 together with the support arm 5, and the defective products are removed from the support arm 5 by hand, etc., and the support arm 5 is tilted to the inverted position Q1, and the defective products are returned to the conveyor 3 together with the support arm 5. The workpiece transport is restarted.

In addition, in the case of the second workpiece inspection device 1, the first
Only when there is a suspicion of uneven coating, cracks, etc. on the drying workpiece W being transported through the drying oven D1, the drive unit 6 is operated, and the workpiece W at the end position Q2 is visually inspected. In such a case, other non-defective workpieces W can pass under the support arm 5 during the visual inspection, and production efficiency can be improved by increasing the conveyance tact.

The angle of inclination of the support arm 5 at the flip-up end position Q2 is preferably about 35 degrees, and in this example, the step provided on the arm piece 31 prevents the workpiece W from falling and overturning.

Note that the workpiece inspection apparatus 1 of the present invention can appropriately employ various mechanisms such as a ball screw mechanism or a gear rack mechanism for the drive device 6, and the conveyor 3 can have the rollers 12 disposed above the side frame 10. It is also possible for the recess 2 to be formed only by the gap between the rollers 12.

〔Effect of the invention〕

Since the present invention is configured as described above, the surface of the workpiece being conveyed by the conveyor can be held diagonally facing the operator with the lifting action of the support frame, thereby facilitating various inspection operations and inspection. Accuracy and inspection efficiency can be improved. In addition, the workpiece inspection device can instantaneously lift up the workpiece using the workpiece diagonal lifting tool, and can also transport other workpieces by passing under the support frame during inspection, eliminating the need to stop transporting the workpiece and increasing the transport tact-up. It is also possible to improve production efficiency by

Furthermore, since the support arm holds the workpiece at an angle, many effects can be achieved, such as making it easier to take out workpieces judged to be defective.

The workpiece inspection apparatus of the present invention can also be suitably used for sampling workpieces from a line for various inspections such as metrological inspections.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a schematic diagram showing a chain driving means, FIG. 3 is an operational view showing the operation of the present invention, and FIG. 4 is a layout of a painting line in which the present invention is adopted. 2... Recess, 3... Transfer conveyor, 5... Support arm, 5A... Upper surface, 5B... Lower surface, 6... Drive machine, 7... Work diagonal lifting tool, S... Transfer surface,
W...work.

Claims (1)

[Claims] 1. A conveyor capable of conveying a plate-shaped workpiece and having a concave part on the conveyor surface that crosses the conveyor at an interval smaller than the length of the workpiece in the conveyance direction, is provided with a recess diagonally on one side of the conveyor. a support arm whose one end is pivoted so as to be able to flip up and tilt, and which fits into the recess when inverted so that its upper surface is at a lower position than the conveying surface, and which allows the workpiece to pass between the lower surface and the conveying surface by flipping up; , a workpiece inspection device comprising a workpiece diagonal lifting tool which is attached to the support arm and includes a drive device for causing the support arm to flip up and tilt the workpiece.