JP2505592Y2 - Coating equipment - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is applied to coat liquid in a paper coater of a papermaking machine,
The present invention relates to a coating device used for coating a film or a thin metal plate surface.

(Prior Art) FIG. 5 shows an example of a conventional coating machine (blade coater). Paper 2 or a belt-like material is wound around the outer circumference of a backing roll 1 to be transferred to a backing roll. From the coating liquid supply header 4 having the nozzle 5 provided at the lower position of the outer periphery of the roll 1, the coating liquid 3 is vertically upwardly directed from the slit groove 5a of the nozzle 5 toward the lower surface of the paper 2 or a similar belt-like material. The coating liquid is adhered to the lower surface of the strip by spraying. Then, the excess coating liquid is removed by a blade 7 provided downstream of the coating liquid supply header 4 in the paper transport direction to form a constant coating liquid layer 2a on the surface of the paper 2. The blade 7 is attached to the top end of the coater head 6, and the excess coating liquid 3a scraped off by the blade 7 is collected by the guide plate 9 in the color pan 10. The elevating cylinder 11 is used for attaching and detaching the coating liquid supply header 4 located on the swing arm 8, and when the paper 2 is passed or cut,
It is in the lowered position during standby, and in the illustrated raised position during the coating operation. Further, the coating liquid supply header 4 is located on the mounting arm 14 and can be rotated by a screw mechanism (not shown) around the spray rotation pivot 12 which coincides with the discharge tip of the nozzle 5 in FIG. The spray angle is determined so that

(Problems to be Solved by the Invention) The cause of impeding the continuous operation of the spraying method in FIG. 5 is that the coating liquid adheres to the vicinity of the tip lip of the slit groove 5a of the nozzle 5, which causes the transfer surface. 13 is disturbed, and even after metalling with the finishing blade 7, the influence of transfer unevenness appears on the final product, which impairs the quality. Therefore, regularly (5
Every 10 days), the header mounting arm 14 is lowered by the cylinder 11 to lower the coating liquid supply header 4,
The operator was cleaning the dirt accumulation of the coating liquid near the tip of the slit groove 5a with a spatula.

However, the space between the descended header 4 and the backing roll 1 is small, and the backing roll 1 is rotating above the head, so that the workability is poor and the color pan 10 is disturbing, which is very dangerous. Moreover, cleaning takes time and deteriorates productivity. In the conventional coating liquid supply header lowering mechanism, a large working space cannot be taken, and also in the case of means for slidingly moving the coating liquid supply header 4 shown in FIG. When it was fixed to the upper surface of 8, the mounting arm 14 to which the supply header was mounted did not move and could not be moved.

The present invention has been proposed in order to solve the above-mentioned conventional problems, and an object thereof is to provide a coating apparatus capable of reliably ensuring a cleaning position.

(Means for Solving the Problems) For this reason, the present invention is directed to a coating apparatus provided with a coater head for applying a coating liquid to the surface of a belt-shaped material such as paper which is wound around a backing roll, and is provided below the end of the backing roll. A swing arm pivotally supported by one of the machine frames is provided, and the swing arm can be moved up and down by an elevator actuator. One end of the swing arm is pivotally supported by the pivot and the same length as the first link. And one end of the second link that is pivotally supported by the swing arm and the other end of the second link.
A mounting arm supported in a state where the links are parallel to each other is hung, a coating liquid supply header is axially supported at the coater head side end of the mounting arm, and the mounting arm is provided between the swing arm and the mounting arm. The coating liquid supply header can be moved up and down by rotating it by an interposed actuator, and the coating liquid supply header can be swung by an actuator interposed between the mounting arm and the coating liquid supply header. This is the means for solving the problems.

(Operation) During the coating operation, the mounting arm of the coating liquid supply header is raised, and the position of the raised coating liquid supply header is set as the coating position. In addition, when cleaning the nozzle due to stains or accumulation with coating liquid, lower the mounting arm with a link mechanism and swing the coating liquid supply header as shown by the alternate long and short dash line (Fig. 2). Greater separation, more space, and easier operator cleaning. If the moving mechanism is a rotary pin type, it can be operated with long-term reliability.

(Embodiment) The present invention will be described below with reference to embodiments of the drawings.
FIG. 2, FIG. 3 and FIG. 3 show an embodiment of the present invention. In addition,
In FIGS. 1 to 3, the same parts as in the prior art will be described using the same reference numerals. In the figure, a swing arm 23 is pivotally attached to a bracket 21 provided on a machine frame below an end portion of the backing roll 1 by a pivot 22, and the swing arm 23 has an upper limit determined by an upper limit stopper 25. It can be moved up and down by a spring 26).

The mounting arm 29 has a first end whose one end is pivotally supported by the pivot 22.
A parallel link 27 and a second parallel link 28 of the same length whose one end is pivotally supported by the swing arm 23 support and suspend the links 27, 28 in parallel. It should be noted that this is provided on both the operating side and the driving side of the coating apparatus, and a coating liquid supply header 24 is erected at the tip end of the mounting arm 29 on the coater head 6 side, with both ends pivotally supported. Further, the supply header 24 is provided with a bracket 30, and the mounting arm 29
An actuator (air motor, AC gear, cylinder, etc.) 32 is engaged with the protruding portion 31 formed on the, and when the actuator 32 expands and contracts, the coating liquid supply header 24 swings. .

In addition, an actuator (air motor, etc.) is provided between the mounting arm 29 and the bracket provided under the swing arm 23.
33 is attached, and by its expansion and contraction, the attachment arm 29 on which the coating liquid supply header 24 is installed is moved up and down by a link mechanism. In the figure, 2 is paper, etc., 2a is a coating liquid layer, 3
Is a coating liquid, 7 is a blade, 13 is a transfer surface, 34 is a guide plate,
35 is a color pan.

Next, the operation of the embodiment configured as described above will be described. At the time of coating, the actuator 32 is reduced and the coating liquid supply header 24 is swung to the coater head 6 side and raised.
The actuator 33 is extended to raise the mounting arm 29 to the coating position. In addition, the transfer surface 13 is combined with the swing arm 23 that moves up and down by the lifting actuator 26.
The spray angle of the nozzle 5 is determined so as to be optimum, and the coating liquid 3 is sprayed from the nozzle 5 of the coating liquid supply header 24 onto the paper 2 or a belt-like material to adhere the same.

When the coating liquid adheres to the vicinity of the tip lip of the nozzle 5, the transfer surface 13 is disturbed, and the unevenness of transfer occurs even after metalling by the finishing blade 7. Therefore, in this case, when the dirt is cleaned, paper is passed, paper is cut, or in standby, the actuator 33 is contracted as shown in FIG. 2 so that the attachment arm 29 is lowered by the link mechanism and installed on the same arm. The coating liquid supply header 24 is also lowered to widen the gap with the coater head 6. When the actuator 32 is further extended, the coating liquid supply header 24, which is axially supported, is tilted toward the swing arm 23 side to increase the space as shown by the one-dot chain line in FIG. Makes cleaning work significantly easier. In addition, the lifting actuator 26
By lowering and lowering the swing arm 23, it is possible to further increase the work space.

In addition, since the above-mentioned moving method is constituted by the rotary pin method, it can be operated with long-term reliability. Further, FIG. 3 is a relational diagram of the first parallel link 27, the second parallel link 28, the backing roll 1, and the coating liquid supply header 24. The length of the first parallel link 27 and the second parallel link 28 is geometrically long. By setting the radius to be equal to the radius R of the backing roll 1 and the angle α to be the same, it becomes possible to cause the tip of the nozzle 5 of the coating liquid supply header 24 to follow the roll circumference, thereby causing a failure of other actuators. It is possible to prevent the nozzle 5 from interfering with the backing roll 1 in the case of an erroneous operation.

(Effect of the Invention) Since the present invention is configured as described above, the working space is increased by lowering the coating liquid supply header by the parallel link, and the supply header is moved to the operator's cleaning work position by the swing mechanism. Since the nozzle mouth is directed, the work becomes easier and the work time is shortened. Further, since the dirt accumulation of the coating liquid can be almost completely removed, the machine stoppage time can be shortened, the quality can be stabilized, and the productivity can be improved. In addition, if all movement methods are rotation pin methods and the parallel link length is the radius length of the backing roll,
A motion along the circumference of the roll can be imparted to the supply header, and twisting or immobility on the operating side and the driving side can be retracted, and reliable long-term mechanical operation can be performed.

[Brief description of drawings]

FIG. 1 is a side view of a coating apparatus according to an embodiment of the present invention during coating, FIG. 2 is a side view of the coating apparatus when a coating liquid supply header is lowered, and FIG. 3 is an embodiment of the present invention. FIG. 4 is an explanatory view showing the relationship between rolls and parallel links according to the apparatus, FIG. 4 is an explanatory view of a conventional header slide system, and FIG. 5 is a side view showing a conventional coating apparatus. Description of main parts of the figure 1 …… Backing roll 2 …… Paper 3 …… Coating liquid 6 …… Coating head 22 …… Pivot 23 …… Swing arm 24 …… Coating liquid supply header 26 …… Lift actuator 27 …… First parallel link 28 …… Second parallel link 29 …… Mounting arm 32 …… Actuator 33 …… Actuator

Claims (1)

(57) [Scope of utility model registration request] 1. A coating apparatus provided with a coater head for applying a coating liquid to the surface of a belt-shaped material such as paper running around a backing roll, which is pivotally supported by a machine frame below an end of the backing roll. A swing arm is provided, and the swing arm can be moved up and down by an elevating actuator. One end is pivotally supported by the pivot, and one end is pivotally supported by the swing arm with the same length as the first link. A mounting arm supported by the first and second links parallel to each other is suspended from the other end of the second link, and a coating liquid supply header is axially supported at the end of the mounting arm on the coater head side. At the same time, by rotating the mounting arm by an actuator provided between the swing arm and the mounting arm, the coating liquid supply header can be moved up and down.
Moreover, the coating liquid supply header can be swung by an actuator provided between the mounting arm and the coating liquid supply header.