JPH0448954A - Apparatus for automatic painting of flat and free-shape material - Google Patents

Abstract

PURPOSE:To coat a material uniformly using a plurality of spraying guns corresponding to the shape of the material by installing a speed-variable-type transporting apparatus, a plurality of sensors, a plurality of automatic spraying guns, and a driving apparatus which moves the automatic spraying guns reciprocally and simultaneously to the direction crossing with the direction of transportation of the material. CONSTITUTION:A leather 6 is continuously led from an leading end I and its shape is detected by a transmission-type photoelectric sensor 7 and the data is saved in a memory apparatus of a controlling apparatus. Based on the data regarding the saved shape of the leather 6, a servo motor 5 of a rope conveyer 1 is driven to transport leather 6 in a y-axial direction-transportating distance and the leather 6 is moved forward in a prescribed sending distance. After that, two automatic spraying guns A, B are operated and one coating process is carried out. In this case, while the automatic spraying means A, B are positioned in positions near the end points (a), (d) of their reciprocal movement where the coating extent of the automatic spraying guns is out of the leather 6, the leather 6 is transported and moved in a prescribed distance by the rope conveyer 1 and stopped for a moment, and during the leather is stopped, coating is carried out these automatic spraying guns A, B.

Description

Detailed Description of the Invention [Industrial Field of Application] This invention is an automatic coating method for flat, irregular materials such as leather, which is uniformly coated with multiple spray guns depending on the shape of the material in the leather finishing process. It is related to the device.

[Prior art] Conventionally, in the leather finishing process, leather is spread on a conveyor with nylon rods stretched at an appropriate pitch width, and as it moves continuously, the shape of the leather is read and memorized by a sensor, and the shape of the leather is read and memorized. or rotate into an oval,
Alternatively, a plurality of spray guns that reciprocate in a direction perpendicular to the direction in which the leather travels are moved in accordance with information on the shape of the leather to perform coating according to the shape.

[Problem to be solved by the invention] In the conventional method, the coating is carried out while continuously moving the leather, so in both the rotating method and the reciprocating method, there are many places where the coating patterns of multiple spray guns intersect. This causes non-uniformity of the coating film, which is particularly inconvenient in cases where a uniform coating film is required. In addition, in the reciprocating type, reciprocating motion is performed over a predetermined distance regardless of the shape of the leather, which takes more time than necessary, reducing work efficiency.

SUMMARY OF THE INVENTION Therefore, the present invention provides an automatic coating device for flat irregular-shaped materials that solves these problems and enables efficient coating with a uniform film regardless of the shape of the irregular-shaped materials to be processed. The purpose is to

[Means for Solving the Problems] In order to achieve the above object, the automatic coating device for flat, irregularly shaped materials according to the present invention uses a variable speed conveyance type that conveys the material intermittently over a predetermined distance. A device, a plurality of sensors arranged in a direction transverse to the material conveyance direction at the material introduction part to detect the shape of the material, and a plurality of sensors arranged at an appropriate interval behind the sensors in a direction transverse to the material conveyance direction. A plurality of automatic spray guns arranged at intervals and activated only when the conveying device is stopped, and the outermost part of the material in the coating area of these automatic spray guns in the direction transverse to the direction of conveyance of the material. The present invention is characterized in that it has a drive device that simultaneously reciprocates these automatic spray guns in a direction transverse to the material conveyance direction between positions corresponding to the positions.

Due to the movement of the automatic spray gun in a direction transverse to the conveying direction of the irregularly shaped material, during the time when the automatic spray gun is in a position near the end of the reciprocating movement where the coating range of all automatic spray guns is out of the material, The amorphous material is transported by the transport device a predetermined distance and then stopped once, and while the material is stopped, it can be coated with an automatic spray gun.

Preferably, the feeding distance of the amorphous material depends on the number of automatic spray guns provided (n) and the mutual spacing (1) of each automatic spray gun, from 1 to 2/2 when n-2.
From the range of 31.2151, 2/5l, 2/91, n
-3 when it is 3151, 3/5l, 318 branches, 3/
It can be set by selecting from the range of 10 zodiac signs, 415 zodiac signs when it is 2n-4, and the range of 4/71.4/91.4/11 zodiac signs.

[Embodiments] Examples of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show an automatic leather coating device according to an embodiment of the present invention, and in FIG. 1, 1 is 201111.
In the illustrated embodiment, the width of the rope conveyor in the X direction, that is, the direction transverse to the conveying direction of the lobe conveyor 1 is 25 mm.
The roll 3 at one end is driven by a servo motor 5, and the leather 6 is intermittently conveyed in the direction of the arrow as will be explained later. Therefore, elements 1 to 5 constitute a variable speed conveying device.

In the illustrated embodiment, 48 transmission type photoelectric sensors 7 are provided along the X direction at a distance of 1700 m from the leather introduction end 1 of the lobe conveyor l, and the leather 6 detected by these transmission type photoelectric sensors 7 is The information on the X direction and the shape in the X direction is taken into a storage device of a control device (not shown) as the leather 6 moves.

Further, 1300m in the X direction from the transmission type photoelectric sensor 7
A high-speed actuator 9 driven by a servo motor 8 is provided along the X direction at a distance of m, and two automatic spray guns A and B are attached to this actuator 9. The distance between the two automatic spray guns A and B is 390 ports in the illustrated embodiment.

The left end position and right end position for these automatic spray guns A and B are respectively indicated by a and d, and the left end position of the leather 6 for automatic spray gun A is b, The right end position of the skin 6 for gun B is shown as C. Also, in Figure 1, a
- represents the starting position of the painting operation corresponding to the leading end b' of the leather 6 in the traveling direction, C'' is the rear end of the leather 6 in the traveling direction, and d represents the finishing position of the painting operation corresponding to the rear end C of the leather 6 in the traveling direction. ’ is indicated.

The feed pitch (feeding distance) pt of the lobe conveyor 1 for each stroke of the automatic spray guns is set as shown in Fig. 2 in relation to the number of automatic spray guns and the distance between the automatic spray guns. In FIG. 2, O represents the center position of the X-direction painting pattern of automatic spray gun A, and X represents the center position of the X-direction painting pattern of automatic spray gun B.

That is, the control device is equipped with a four-stage changeover switch, and the moving distance of the leather 6 in the y direction for each painting process is related to the number n of automatic spray guns used and the distance between the automatic spray guns. I'm trying to set it up. In the illustrated example in which the number n of automatic spray guns used is 2, the distance the leather 6 moves in the y direction for each painting process is 26011.
m (2/3 t)15[u+s (2151)
, 111m5 (277 ships), 87mm (2/9
1), and the servo motor 5 drives the roll 3 accordingly.

In the operation of the illustrated automatic painting apparatus configured in this way, the leathers 6 are successively introduced one by one from the introduction end (2) so that they do not overlap each other, and their shape is detected by the transmission type photoelectric sensor 7. Information regarding the shaped shape of the leather 6 is stored in the storage device of the control device. Based on the information regarding the shape of the leather 6 stored in this storage device, the servo motor 5 of the lobe conveyor 1 is driven to convey the leather 6 by the y-direction movement distance set via the changeover switch in the control device, and Advance the leather 6 by the feeding distance. Thereafter, the two automatic spray guns A and B provided on the actuator 9 are activated to perform one painting process. In this case, due to the movement of automatic spray guns A and B, the automatic spray guns A and B are positioned close to the end points a and d of the reciprocating movement where the coating range of these automatic spray guns is outside the leather 6. During the period of time, the leather 6 is transferred to the lobe conveyor 1 by a predetermined distance as described above.
The paint is transported and moved by the automatic spray gun A1B, and then stopped once, and while it is stopped, painting is performed by these automatic spray guns A1B.

In this way, the movement and painting of the leather 6 is repeated, and the coated leather 6 is sent to a drying device (not shown) with the terminal end O red.

Fig. 3 shows an example using three automatic spray guns A-C, parts corresponding to Figs. It represents the center position of the pattern.

In addition, Fig. 4 shows an example using four automatic spray guns A to D. In this case as well, parts corresponding to those in the above example are indicated by the same symbols, and ■ indicates the X-direction coating pattern of automatic spray gun D. represents the center position of

By the way, in the illustrated embodiments, two, three, and four spray guns are provided, and the number of automatic spray guns to be mounted on one high-speed actuator is 2 to 4 from the viewpoint of efficiency, operability, etc. However, the number is not limited to this, and in that case, a feed pitch corresponding to the number of guns is selected in the same manner. Furthermore, by incorporating a servo motor into the drive motor of the conveyor, it is also possible to make the movement in the y direction a repetitive movement.

Furthermore, it is possible to use any type of sensor instead of the transmission type photoelectric sensor to detect the shape of the irregularly shaped material, and it is also possible to use other types of conveying devices instead of the lobe conveyor. is also possible.

Furthermore, although the illustrated embodiment has been described with respect to leather, it is of course applicable to coating similar irregularly shaped materials.

Further, the dimensions of each part can be appropriately designed depending on the size and shape of the irregularly shaped material to be processed.

[Effects of the Invention] As explained above, according to the automatic coating device of the present invention, the movement of the automatic spray gun can be suppressed to a necessary and sufficient range according to the shape of the leather, which is originally amorphous. In addition, since the conveyor movement in the X direction is synchronized with the movement of the automatic spray guns in the Since they do not overlap, it is possible to obtain a uniform coating film.

In addition, by setting the feed interval of the conveyor within a predetermined range, it is designed so that the distance between the parallel lines of each painting pattern is the same regardless of the size of the spray gun. A very high degree of uniformity is obtained. - If you want to increase or decrease the amount of coating per 10,000 units of area, you can achieve your goal without impairing the uniformity of the coating simply by arbitrarily selecting the feed pitch. As a result, it is now possible to perform applications such as aniline painting, which requires an extremely uniform coating, and enamel painting, which requires a thick coating, which previously relied on hand spray (painting with a hand-held gun).
It is possible to achieve greater labor-saving effects, space-savings, and improved productivity compared to conventional methods.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a schematic side view of the apparatus shown in FIG.
A composite diagram showing the positional relationship of the coating patterns of each spray gun. Figure 3 is a diagram corresponding to Figure 2 when three spray guns are used, and Figure 4 is a diagram when four spray guns are used. This is a diagram corresponding to Figure 2. In the figure, Lobe conveyor 5: Rope conveyor drive motor 6: Leather 7: Sensor 9, high-speed actuator 8: High-speed actuator drive servo motors A, B, C, D + automatic spray gun ■ = Rope conveyor introduction section 0: Rope conveyor discharge section 1st time

Claims (1)

[Claims] 1. A variable speed conveyance device that intermittently conveys a material by a predetermined distance, and a material introduction section arranged in a direction transverse to the material conveyance direction to detect the shape of the material. multiple automatic spray guns arranged at appropriate intervals behind the sensors in a direction transverse to the material conveyance direction, and activated only when the conveyance device is stopped. and a position corresponding to the outermost position of the material in the coating range of these automatic spray guns in a direction transverse to the material conveyance direction, while simultaneously moving these automatic spray guns across the material conveyance direction. 1. An automatic coating device for flat, irregularly shaped materials, characterized in that the device has a drive device for reciprocating the material in a direction. 2. Due to the movement of the automatic spray guns in the direction transverse to the material conveyance direction, during the time when the automatic spray guns are at a position near the end of the reciprocating movement where the coating range of all automatic spray guns is out of the material, 2. The automatic coating device according to claim 1, wherein the material is conveyed and moved by a predetermined distance and then stopped, and the coating is performed while the material is stopped. 3. Depending on the number of automatic spray guns provided (n) and the mutual spacing (l) of each automatic spray gun, the material feeding distance is set to 2/3l, 2/5l, 2 when n=2. /
From the range of 7l, 2/9l, when n=3, 3/5l
, 3/7l, 3/8l, 3/10l, and n
When = 4, 4/5l, 4/7l, 4/9l, 4/1
2. The automatic painting apparatus according to claim 1, wherein the automatic painting apparatus is selected from a range of 1 liter.