JPH04114598U - Curtain coater width direction flow rate measuring device - Google Patents

Abstract

(57) [Summary] [Purpose] To easily and efficiently measure changes in the flow rate of coating liquid in the width direction of a curtain coater. [Structure] Directly below the liquid supply head 3 of the curtain coater, a plurality of measuring containers 19 are arranged to receive the curtain film 11 formed by the coating liquid 2 flowing out from the liquid supply head 3, and each measuring container 19 has a plurality of openings 21. , 22, 23 are provided vertically apart, and a liquid level scale 24 is provided on each measuring container.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a widthwise flow rate measuring device for a curtain coater that applies paint to base paper, etc. It is something that

0002

[Conventional technology]

To explain a conventional curtain coater using Fig. 4, a horizontally moving web (base paper) ) Coating liquid 2 can be applied onto the upper surface of web 1 by natural falling or spraying. A liquid supply head 3 is provided. The liquid supply head 3 is fixed to a frame (not shown) or the like. It hangs down from the provided upper support member 4, and extends along the width of the web 1 in the width direction of the web 1. It extends approximately the same length, and is divided into a front part and a rear part in the direction in which the web 1 travels, and has a coating liquid 2 inside. A front head part 6 and a rear head part 7 capable of forming a supply header 5. , is attached to the lower part of the front head part 6 via a slit adjustment mechanism 8 such as a bolt. and extends in the width direction of the web 1 between the rear head portion 7 and the length approximately equal to the width of the web 1. , and a lip 10 forming a slit 9 communicating with the header 5.

0003 When coating liquid 2 is applied to the surface of web 1, web 1 is horizontally moved in the direction of the arrow in Figure 4. During the movement, the coating liquid 2 is supplied to the web 1 from the header 5 of the liquid supply head 3 through the slit 9. By naturally falling or spouting toward the upper surface, the liquid is released onto the supply head 3 and the web 1. Coating is performed while forming a curtain film 11 of the coating liquid 2 between the surface and the surface.

0004 In the curtain coater as described above, the coating liquid 2 is applied uniformly in the width direction of the web 1. It is very important to apply the coating to Accurate adjustment is made in advance using the lit part adjustment mechanism 8, and then a certain amount of paint 2 is supplied. Measure the flow rate of the coating liquid 2 per unit width in the width direction of the curtain film 11. Then, based on the measured value, the slit adjustment mechanism 8 is used to adjust the spacing between the slits 9. is finely adjusted to ensure a uniform flow rate across the entire width.

[0005] To measure and adjust the flow rate of the coating liquid 2 in the width direction, as shown in Figure 5, adjust the required diameter. Hold the lightweight cup 12 with a scale in your hand and place it at any position in the width direction of the liquid supply header 3. A, collect the coating liquid 2 on the curtain film 11 for a certain period of time, and then take it out. Measure the amount of coating liquid 2 in the measuring cup 12, then perform the same measurement at position B, and then The slit adjustment mechanism at position B is adjusted so that the flow rate at position B is equal to the flow rate at position A. Adjust the flow rate by step 8, and then make the flow rate at position C equal to that at positions A and B. Perform the same operations as above, and measure and adjust the entire width one by one in this way. That's what I do.

[0006] However, when adjusting the slit adjustment mechanism 8 at position B as described above, the Position A, which has been adjusted to If you do so, it will affect positions B and A, so measure and adjust positions A and B again. I need to do it again.

[0007] In addition, in order to simplify the measurement operation in the above, multiple measurements are performed as shown in Figure 6. The measuring cups 12 are arranged on the cup stand 13, and a plurality of measuring cups 12 are placed on the cup stand 13. By moving it in and out of the curtain membrane 11, measurement in the width direction can be performed in one operation. It is being considered that

[0008]

[Problem that the idea aims to solve]

However, the measurement method using the measuring cup 12 as shown in FIGS. 5 and 6 above is not suitable. In both cases, the measuring cup 12 must be cleaned every time a sample is taken to remove any adhering paint. It is necessary to remove liquid 2, which is very difficult work, and also requires the use of measuring cup 1. Collecting of coating liquid 2 in step 2 is carried out by workers manually taking it in and out. Therefore, it is easy for human errors to occur in the sampling time of coating liquid 2, and the sampling is completed within a short time. If you have to do this, for example, if the flow rate of coating liquid 2 is high, immediately remove the measuring cup. 12 is full, accurate measurement results cannot be obtained, and weighing Errors in reading the scale of the cup 12 may also occur.

[0009] Furthermore, measurement using the measuring cup 12 is very time consuming and reduces work efficiency. In addition to this, the amount of paint that is wasted increases because it takes time to measure. It had such problems.

0010 This invention was developed by focusing on the above-mentioned conventional problems. We have developed a curtain coater width direction flow rate measuring device that can easily and efficiently measure the flow rate in the width direction. is intended to provide.

[0011]

[Means to solve the problem]

This invention has multiple gauges installed along the liquid supply head directly below the liquid supply head of the curtain coater. A measuring container is provided, each measuring container has a plurality of openings spaced apart from each other vertically, and A widthwise flow rate measuring device for a curtain coater, characterized by having a liquid level scale on the volume container. It depends on the location.

0012

[Effect]

Each metering container receives a curtain film of coating liquid flowing out from the liquid supply head. Then, paint The liquid is stored inside each metering container and simultaneously discharged from the opening. And each In the measuring container, when the amount of coating liquid received and the amount of liquid discharged become equal, the internal liquid level will rise. Once the liquid level has stabilized, check the liquid level scale and adjust each measuring volume. Adjust the liquid supply head so that the liquid level in the container is equal.

[0013]

【Example】

Embodiments of the present invention will be described below based on the drawings.

[0014] Figures 1 to 3 show an embodiment of the present invention, and in the figures, parts with the same symbols as in Figure 4 are shown. represent the same thing.

[0015] As shown in FIG. 1, a curtain flowing down from the liquid supply head 3 is placed below the liquid supply head 3. A container-shaped return pan 14 for receiving the coating liquid 2 on the film 11 is provided, and the return pan 14 A pair of horizontal overhangs 15 and 16 on the upper edge portion perpendicular to the longitudinal direction of the liquid supply head 3. A curtain film is formed between the overhanging portions 15 and 16 and located directly below the curtain film 11. A support beam 17 extending parallel to the support beam 11 is adjusted by a level adjustment mechanism 18 such as an adjustment screw. It will be constructed with height and levelness adjustable.

[0016] A plurality of weighing containers 19 are disposed on the support beam 17 along the support beam 17 for measurement. A measuring device 20 is configured.

[0017] As shown in FIGS. 2 and 3, tapered openings 21, 22, 23 are provided in each measuring container 19. A plurality of holes are formed vertically apart from each other with a smaller diameter toward the bottom and a larger diameter toward the top. The container 19 is made of a transparent material so that the liquid level of the coating liquid 2 inside can be read. A liquid level scale 24 is provided.

[0018] Note that 25 in the figure indicates a liquid outlet of the return pan 14.

[0019] For measurement, as shown in Figure 1, an integrated return pad is installed at the bottom of the liquid supply head 3. The curtain 14 and the measuring device 20 are arranged so that the measuring device 20 is located directly below the curtain membrane 11. After the measurement device 20 is placed, the level adjustment mechanism 18 adjusts the height and horizontal adjustment of the measurement device 20. Make adjustments.

[0020] In this state, the coating liquid 2 is allowed to flow down from the liquid supply head 3 by gravity or jetting, and The curtain membrane 11 is received in each measuring container 19 of the measuring device 20. Then, each measuring volume In the container 19, the received coating liquid 2 accumulates inside, and at the same time, the opening 21 or further 22, 23 It will be discharged from the tank to the return pan 14, and the amount of coating liquid 2 received and discharged When the amount of coating fluid 2 becomes equal, the amount of coating fluid 2 inside each measuring container 19 is at a constant level. becomes stable.

[0021] When the amount of coating liquid 2 inside each measuring container 19 is stabilized at a certain level, each measuring container 19 Comparing the liquid level scale 24 of Since the coating liquid 2 The measuring container 19 with a low liquid level is adjusted so that the amount of spouting liquid 2 is small. Since the amount is small, loosen the slit adjustment mechanism 8 of the corresponding part of the liquid supply head 3. Adjust the spouting amount of coating liquid 2 to be large so that all of the coating liquid 2 inside the measuring container 19 is The liquid level is made the same, and finally the entire width of the curtain membrane 11 is made to have a uniform flow rate.

[0022] In addition, even if a large amount of coating liquid 2 is received, the plurality of openings 21, 22, 23 can be opened downwardly. The diameter is small and the diameter increases toward the top, and as the liquid level rises, the opening opens at the top. Coating liquid 2 is discharged from 22 or 23, so you can adjust it with confidence. It can be performed.

[0023] In this way, the liquid level scale 24 can be compared while the measuring device 20 is receiving the coating liquid 2. Since we made it possible to make adjustments while This makes the work easier as there is no need to clean the coating liquid 2, and the time required to collect the coating liquid 2 is reduced. Eliminates measurement errors due to physical errors, and also prevents reading errors on the liquid level scale 24. This allows for highly accurate adjustments to be made efficiently and in a short period of time, while also eliminating waste. The amount of coating liquid 2 can also be reduced.

[0024] Note that the curtain coater width direction flow rate measuring device of the present invention is limited to the above-mentioned embodiment. Various changes may be made without departing from the gist of the invention. Of course it is possible.

[0025]

[Effect of the idea]

As explained above, according to the curtain coater width direction flow rate measuring device of the present invention, Various excellent effects can be achieved as described below.

[0026] (1) Continuously adjust the slit width while comparing the liquid level scale of each measuring container. This makes it possible to perform adjustment work extremely easily, quickly and efficiently. The amount of wasted coating liquid can be reduced.

[0027] (2) Multiple openings allow measurement over a wide flow rate range.

[0028] (3) Highly accurate measurement is possible.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is an enlarged view of the metering container of FIG. 1;

FIG. 3 is a view taken along arrow III-III in FIG. 2;

FIG. 4 is a cutaway side view showing an example of a conventional curtain coater.

FIG. 5 is a front view showing an example of a conventional width direction flow rate measuring device for a curtain coater.

FIG. 6 is a front view showing another conventional example.

[Explanation of symbols]

3 Liquid supply head 19 Measuring container 21, 22, 23 opening 24 Liquid level scale

Claims (1)

[Scope of utility model registration request] Claim 1: A plurality of measuring containers are arranged directly below a liquid supply head of a curtain coater along the liquid supply head, each measuring container is provided with a plurality of openings spaced apart from each other vertically, and each measuring container is provided with a plurality of openings vertically spaced apart from each other. A widthwise flow rate measuring device for a curtain coater, characterized by having a surface scale.