JPS62250961A - Equipment for continuously painting metal strip plate - Google Patents

Abstract

PURPOSE:To enhance the yield and efficiency in multikinds and small-quantity production, by arranging at least two sets of painting apparatuses, each of which is equipped with a painting unit, a painting unit moving apparatus and a washing apparatus, along a strip plate running path so as to leave an interval therebetween. CONSTITUTION:During the painting of a strip plate S in a painting unit 1, a painting unit 2 reaches a washing positing W2 where the roll, pan and piping, etc. thereof are washed and is subsequently moved to a stand-by position P2. In replacing painting, the painting unit 1 having performed painting up to now is retracted to a stand-by position W1 to separate an applicator roll. The painting unit 2 performs reverse operation in timing generating no unpainted part in the strip plate S and presses the applicator roll to the strip plate S to perform painting. During this time, the painting unit 1 placed on a replacing truck is moved to a washing position W1 by said truck to perform washing.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application on A-Beams) This invention relates to continuous coating equipment for metal strips using a roll coater method.

(Prior Art) In recent years, with the trend toward high-mix, low-volume production of 1M products, many types of coated strips have been manufactured. Most strips are painted using a roll coater method, in which the strip is coated continuously while it is running. In order to handle multiple types of coating, it is necessary to change the coating during the painting process, and the coating equipment must be able to apply the coating quickly. It was difficult to repaint in a short period of time because the paint would have to be supplied later.

As a solution to this problem, for example, there is a roll coater type coating apparatus disclosed in Japanese Patent Publication No. 80-58552. As shown in FIG. 8, which is a top view of this apparatus, it is equipped with two painting apparatuses 111 and 92, each mounted on a trolley 94 and running left and right on a rail 951-. A cleaning device 87 is arranged on the side of the painting position. Applicator roll 99 to metal 1;? When applying the paint by pressing it against the board S,
A gap is provided between the applicator rolls 99 that are in contact with the strip S, and Qij (94) is driven to run the coating device 31 currently being coated on the rail 95 and move it from the coating line position to outside the line. Instead, the +18-equipped δ92, which has been completely cleaned by the cleaning device 97, is pulled into the painting line position and painted on the strip S, which is waiting outside the line while being painted by the painting device 32. The coating device 91 is a cleaning device 97.
Wash at.

(Problem to be Solved by the Invention) In the above-mentioned conventional roll coater type *i apparatus, after providing a gap between the applicator roll 99 and the metal strip S, the next coating is carried out after a period of time corresponding to the moving time of the coating apparatus. Painting will begin. During this waiting time.

The metal strip may be stopped or run continuously. When stopping, the normal line configuration is to set up an oil treatment device and baking furnace before and after the coating device.
The quality of the strips that accumulate in this area will be impaired. Also, if the strips are run continuously, there will be unpainted areas on the strips and these areas will not be used as products. Therefore, in both cases, the yield will be Low efficiency is not avoidable.

Furthermore, in response to recent high-item, low-volume J-production, with the shortest loft, coating may be completed in a shorter time than the time required to clean the rolls with a cleaning device.

This invention was made in order to solve the above-mentioned problems, and it is possible to improve yield and efficiency, and to cope with high-mix, low-volume production. [Objective 1] Obtaining equipment.

(Means for Solving the Problems) In the painting and burying of the present invention, at least two sets of painting devices are arranged at intervals along the strip running path. At least two sets of coating devices are arranged at intervals in the vertical direction when the strips are running in the stacking direction, and at intervals in the water direction when the strips are running in the horizontal direction. There is. Each coating device includes a coating unit, a coating unit moving device, and a cleaning device. The number of coating devices is at least two, but preferably three or four. 51
Below [-, the effect of increasing the number of sets is small even though the equipment cost increases.

The coating unit has a coating roll and a paint pan. The device that rotates the coating roll is
If the coating roll rotation drive device is provided separately from the coating roller 1, which may be included in the coating unit or placed at the coating position separately from the coating unit, the coating roll and rotation drive device may be It is removably connected to the output shaft via, for example, a pawl clutch, a sliding key clutch, or a prismatic spline joint. An alternating current or direct current motor is used as the rotational drive source for the coating roll. If the coating roll rotation drive device is included in the coating unit, it must be
It is preferable to use an AC motor or a hydraulic motor that does not have the possibility of generating ε.

The cleaning device is located on one side of the strip path away from the painting location. The cleaning device is similar to the conventional device, with a cleaning liquid spray nozzle, a cleaning liquid tank that supplies cleaning liquid to the nozzle, and a cleaning liquid tank that supplies cleaning liquid to the nozzle.
It is equipped with a pump, wastewater collection tank, etc.

The painting unit moving device includes a truck, an electric motor, a hydraulic device, a crane, and the like. An electric motor or hydraulic system drives the table I: (on which the painting unit is placed).

The crane lifts and moves the painting unit. The coating unit moving device moves the coating unit along the entrance/exit path from the coating position to the cleaning position.

(Function) Let the painting unit of the first set of painting equipment be the painting unit 1, and the painting unit of the second set of painting equipment be the painting unit 2. Assuming that the first set of painting units 1 is currently painting, the second set of painting units 2, which has completed the cleaning process, is waiting at the painting position. During repainting, the coating roll of the coating unit 1 is pulled away from the strip, and the coating roll of the coating unit 2 is pressed against the strip. The first set of coating units, To1, from which the coating rolls have been separated, are immediately moved through the access passage to the cleaning position. Painting 2) Cleaning in 1 is performed while the painting unit 2 is painting. Follow the same steps below for painting, repainting, cleaning, etc. are performed continuously.

In addition, it is equipped with pIi! If there are 3 sets of S equipment, take turns painting from the 1st set to the 3rd set, and while the 2 sets continue painting, wash the other set of painting units. The same applies if there are four or more sets.

Since it is sufficient to wash each set of painting units while other painting units are taking turns performing painting work, the cleaning work can be sufficiently completed before the first painting. Furthermore, during repainting, since the cleaned painting unit is waiting at the painting position, repainting can be performed immediately without stopping the painting line and without leaving unpainted areas.

(Example) Example■ Figure 1 shows this 9. FIG. 2 is a perspective view showing working positions for painting, cleaning, etc. of the continuous coating equipment in the light;

As shown in the drawing, the strip S is guided by a backup roll 4 placed on the upper side and runs straight. A 19th coating position C1 and a second painting position C2 are provided above and below the running path of the strip S, respectively, and each painting position c, c2 has a cutting standby position PI, which is spaced apart from the strip S. P2 is adjacent. Wash n- positions W1 and W2 are provided at intervals on one side of the moss cutting standby positions 21P+ and P2. The first painting position f1CI is the painting position of the first set of painting apparatuses (2), and the second painting position C2 is the painting position of the second painting apparatus (2).

FIG. 2 is an F-plane view of the entire first set of painting bags 2tI.

Rail 5 of the entrance/exit path from the painting position CI to the oil washing position Wl
4 is extended. An entry/exit cart 51 with a painting unit 1t-NSa running on the rail 54 of the entrance/exit road runs.

The 2nd!11th coating device ■ is similarly configured, and the 1st
Ml painting equipment! is located directly below.

3 and 4 are a front view and a side view of the coating unit l. The coating unit 1 includes a first sliding table 11 and extends in a direction perpendicular to the entry/exit rail 54. The first sliding table 11 is mounted on the removable cart 51 via a guide 12 provided on the removable cart 51. In/out trolley 5
! The first sliding table 11 is advanced and retreated toward the band plate S by an applicator roll pressing device 2t14 including an electric motor and a screw mechanism disposed above. An applicator roll 18 is rotatably supported on the first sliding table 11,1- via a bearing 18, and a paint pan 19 is attached thereto. Further, a second sliding table 21 is mounted on the 11th sliding table 11J: via a guide 22 provided thereon, and a second sliding table 21 is mounted on the second sliding table 21-H via a bearing 26. A transfer roll 28 is rotatably supported. Similarly,
On the second WII moving table 21 is a guide 32 provided thereon.
A third sliding table 31 is placed via the third tF?
A pickup roll 38 is placed on the moving table 31 via a bearing 36.
is rotatably supported. And the second moving platform 21
and the third sliding table 31 are the first sliding table l!, respectively. And the roll gap JR? including the electric motor and screw mechanism provided on the second sliding table 21? ! ! A device 2124.34 adjusts the gap between the rolls. pickup roll 3
8 picks up the paint 1 from the paint pan 19 and supplies it to the applicator roll 18 via the transfer roll 28. The applicator roll 18 deposits the paint onto the strip S with which it comes in contact.

A device 41 for rotationally driving a coating roll such as the applicator roll 18 is arranged adjacent to the coating position CI and separate from the coating unit 1. That is, three AC electric motors ll&42 with reducers are arranged on the floor 6-1, and the electric motors a42 are connected to the applicator roll 1 via the universal joint 1'a43 and the prismatic spline ll'1=44, respectively.
8. It is detachably connected to the transfer roll 28 and the pickup roll 38.

The L entry/exit cart 51 has an AC motor 52 with a speed reducer, and power is transmitted from the electric fi 52 to the il (wheel 53) via a transmission mechanism (not shown). A stopper 55 is provided on each side of the position Wl, and the stop position of the loading/unloading cart 51 is determined by these stoppers 55.

The cleaning device 71 includes a cleaning liquid spray nozzle 72, a cleaning liquid tank 74 that supplies cleaning liquid to the ladder 73, and a pump 75. It includes a solenoid valve 76, a waste liquid collection tank (not shown), and the like. Further, at the cleaning position gIiW+, there is a rotational drive device 7 that rotationally drives coating rolls such as the applicator roll 18 when cleaning these rolls.
7 is placed. This rotary drive device 77 is composed of an AC motor 78 with a reduction gear, a universal joint 79, and a prismatic spline joint 80, similar to the rotary drive device 41 provided in the coating station MC1, and is detachable.

The operation of the apparatus of this embodiment will be explained with reference to the time chart shown in FIG.

(υ Painting unit 1 is painting the strip S, and painting unit 2 is rolling and panning at 2t W 7.

Piping, gutters, etc. are being cleaned.

■The coating unit 1 is painting the strip S, and the coating unit 2 is at the standby position P2.

(3) When applying the paint, move the painting unit )l that has been painting until now to the standby position P1, and remove the applicator roll from the strip S! What about painting unit 2 that separates 8? i
ii. Perform the reverse operation at the timing when no unpainted areas appear on the plate S, and roll the applicator! 8 to the m-plate S and apply the coating with the coating unit 2. Move the changing table IJ (the painter's chive placed on this by moving 01) 1 to the cleaning position 2.
Move to t W +.

■ The coating unit 2 is painting the strip S, and the painting unit 2) 1 is cleaning the cleaning position Wl.

(5) When changing the next painting, move the painting unit 2 that has been painting so far back to the standby position PI, and
performs a reverse operation at a timing when no unpainted area occurs on the strip S, presses the applicator roll 18 against the strip S, and paints with the coating unit l.

(9) The strip S is being painted in the painting unit L.

The coating unit 2 is being washed n1st 22 W2.

■ Repeat the above operation.

Embodiment 2 FIG. 6 is a perspective view showing the working positions for painting, cleaning, etc. of the continuous coating equipment of this embodiment. Hereinafter, devices and members similar to those in Example I will be given the same reference numerals, and their descriptions will be omitted.

As shown in the drawing, the strip S is guided by backup rolls 4 arranged above and below and runs vertically. 4rt board S
The first painting position 21C+, the second painting position C2 and the third painting position 21C3 are located in the middle and lower positions of the travel path 1-1, respectively.
are provided, and each painting position CI, C2 and C
3, move away from the strip S and wait for the appointment position 21 F
+ + P2 and P3 are adjacent. Washing positions alW+, w, and W3 are provided at intervals on one side of the switching standby positions filF+*P2 and P3. The coating positions CI, C2, and C3 are the coating positions of the first set of coating devices (2), the second set of coating bags 2111, and the third set of coating devices (2), respectively.

The configuration of each coating device is the same as that of Example I above.

The operation of the apparatus of this embodiment will be explained with reference to the time chart shown in FIG.

(D painting unit) The strip S is being painted at l, and the painting unit 2 is in the standby position 22P2. Further, the coating unit 3 is cleaning rolls, pans, piping, gutters, and the like.

■ Strip S is being painted in painting unit L.

The painting unit 2 is at the standby position 27P2, and the painting unit 3 is at the standby position P3.

(Conflict: When entrusting the painting, the painting unit 1 that has been painting until now is moved back to the standby position PI, and the applicator roll 18 is separated from the strip S. The painting unit 2 is moved at a timing that will prevent unpainted areas from occurring on the strip S. Then, the reverse operation is performed, the applicator roll 18 is pressed against the strip S, and the painting unit 2 performs painting.By the movement of the exchange cart 81, the painting unit 1 placed on it 2L is moved to the cleaning position 2tW+.

0) The coating unit 2 is painting the strip S, and the coating unit 2 is at the standby position P2, and the coating unit 3 is at the standby position P3.

[Co., Ltd.] At the time of the next painting change, the painting unit 2 that has been painting up until now is moved back to the standby position P2, and the painting unit 3 performs a passing operation at a timing when no black painted area is generated on the strip S, and the applicator roll 18 is pressed against the strip S, and the painting unit 3 performs painting.

(Small: Painting unit 3 is currently painting strip S.

Painting unit 1 and painting unit 2 are being cleaned.

(7) Furthermore, when the next painting is scheduled, the painting unit 3 that was being painted until now is on standby! t P 3, the coating unit 1 operates in the opposite direction at a timing when no unpainted area occurs on the strip S, and the applicator roll 18
is pressed against the strip S and painted in step 2) 1. The Pji mounting unit 3 moves to the cleaning position W3.

(III) After that, repeat the above operation.

In the case of Embodiment H, it is sufficient to clean the painting unit of the other set while the two sets of painting units are painting successively. Therefore, the painting 117 by one painting unit is performed.
Even if the interval is short, a full cleaning time can be obtained.

(Effects of IJ1) According to the present invention, at least two coating positions are provided in order to eliminate unpainted areas that occur between the transfer points of the coating device. Therefore, even if the painting schedule is such that the shortest coil painting time is 5 minutes, as in the case of Example 1, there will be no unpainted areas during painting, and there will be no need to stop the painting line. No, this result,
It has a great effect on improving the yield of painted strips and painting work ability.

[Brief explanation of drawings]

FIG.
Fig. 2 is a plan view of the entire coating equipment, Figs. 3 and 4 are front and side views of the coating unit, and Fig. 5 is a time chart showing the operation of the continuous coating equipment of the first embodiment. , Fig. 6 shows the second embodiment, and is an observation diagram showing the working positions for painting, cleaning, etc. of the ZI continuous coating equipment, and Fig. 7 shows the operation of the continuous coating equipment of the second embodiment. The time chart and FIG. 8 are front views of a conventional coating device. I, II, III...? Ii mounting device, 1, 2
．． 3...? 1: Loading unit, 4: Presser roll, 1
1.21.31...l? ! Moving base, 14... Applicator roll pressing device, 18... Applicator roll, 19... Paint pan, 24. 34... Roll gap adjustment device, 28... Transfer roll, 38...
...Pickup roll, 41...Roll rotation drive device, S...Strip plate.

Claims (1)

[Claims] It is equipped with a coating unit having a coating roll and a paint pan, a coating unit moving device, and a cleaning device, and the coating unit is moved from the coating position to the cleaning device by the coating unit moving device. In the coating equipment for cleaning coating rolls, at least two sets of coating devices are arranged at intervals along the strip running path, and each coating device is equipped with the coating unit, a coating unit moving device, and a cleaning device, A continuous coating equipment for metal strips, characterized in that the cleaning device is placed on one side of the strip path away from the coating position.