JPS59173163A - Method and device for coating viscous material - Google Patents

Abstract

PURPOSE:To coat surely a viscous material on a material to be coated under movement to a desired shape even in a dusty environment by discharging intermittently the viscous material from plural discharging ports and coating the same on said material. CONSTITUTION:A viscous material 2 is discharged from long linear discharging ports 22, 24 onto a material to be coated 1 through hoses 29, 30 by a force feed mechanism while the material 1 is moved in an arrow 28 direction by a moving mechanism. The discharging of the material 2 is stopped upon ending of coating on shaded parts 37, 38. The viscous material is discharged from a discharging port 29 when the front ends of the parts 37, 38 arrive at the end part 33 of the port 20 on moving of the material 1, so that said material is coated in a special shape 34. Then the viscous material is coated easily on the material to be coated into a special shape.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for applying a viscous material to an object to be coated in a special shape.

Conventionally, as shown in FIG. 1, when applying a viscous substance 2 such as a pressure-sensitive adhesive or an adhesive to a special shape on an object 1 such as a sheet, the viscous substance 2 sent through a hose 3 is A roller 6 having a recess 5 for holding the viscous material 2 is provided in a box 4 having a space 9 in which the viscous material 2 is temporarily stored, and by rotating this roller 6 in the direction of the arrow 7, A roll-type coating device was used in which the adhered viscous material 2 is scraped off with a scraping plate (doctor knife) 8.

In the above-mentioned roll-type coating device, the viscous material 2 is not 100% transferred from the recess 5 of the roller 6 to the object 1 due to its original nature, and always remains in the recess 5. There is. Therefore, if there is dust near this device, the dust may adhere to the residual viscous material 2 and enter the box 4 again. Even if the scraping plate 10 is provided, there is a problem in that this dust accumulates at the boundary 11 between the roller 6 and the sowing plate 10, causing trouble.

Furthermore, when changing the coating shape in the roll-type coating device, no matter how small the change, the entire roller 6 must be replaced, which poses the problem of being uneconomical.

The present invention solves the above-mentioned problems, and provides a method for applying a viscous material that can reliably apply a viscous material even in a dusty environment, and that allows the shape of the application to be easily changed depending on the purpose.
That is, the present invention provides a method for applying a viscous material, which is characterized in that the viscous material is intermittently discharged from a plurality of discharge ports to apply the viscous material to a moving object.

The present invention also provides a viscous material coating device used to carry out the above method, that is, a mechanism for moving the object to be coated, and a plurality of discharges provided near the movement path of the object without overlapping in the direction of the movement path. The present invention provides a viscous material application device characterized by comprising an outlet and a pumping mechanism for intermittently pumping a viscous material to the discharge port.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the apparatus of the present invention used for carrying out the method of the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, reference numeral 1 indicates an object to be coated, such as a sheet body, which is moved in the direction of arrow 28 by a moving mechanism (not shown) consisting of a feed roll and a take-up roll, and 21 indicates an elongated arc-shaped discharge. 23 is a discharge portion having an elongated rectangular discharge port 22; 25 is a discharge portion having an elongated rectangular discharge port 24; each of the plurality of discharge portions 21, 23, and 25 is a discharge portion having an elongated rectangular discharge port 22; 22.24
A line 26°2 passing through the end of and parallel to the moving direction of the workpiece 1
7 and so that the discharge ports 20, 22 and 24 contact the object 1 from below. In this case, the discharge portions 21.23.25 are arranged so that the discharge ports 20, 22.24 are not parallel to each other as shown in the figure, and each discharge portion 21.23.25 is provided with a hose. via 36.29.30, outlet 20, 22.24
A pumping mechanism (not shown) for pumping the viscous material 2 intermittently is connected to the pump. The pumping mechanism is composed of a pump for pumping viscous material and a solenoid valve. 20° 22', 24 so that the viscous material 2 can be intermittently discharged at arbitrary timings.

To explain the above-mentioned discharge part in more detail, the above-mentioned discharge parts 21, 23, 25, as shown in FIGS. 4 and 5,
Basically, between the holding material 12 which has a space 17 inside which serves as a liquid reservoir, and the holding material 13 which does not have this space, a discharge port 2 is provided.
Gap plate 1 having space 15 to form 0,22,24
The hoses 29, 3 are assembled by clamping the 4 and tightening ports, etc., and the hoses 29, 3
The opening 18 of 0.36 mm is opened, and the holding material 12゜13
All discharge portions 21, 23, and 25 have the same configuration in that they are equipped with an electric heater and a temperature sensor for temperature control. The difference in the structure of each discharge part 21.23.25 depends on whether the shape of the discharge port 20.2'2.24 is arcuate or linear.
The only difference is that the shape of the gap plate 14 and the gap plate 14 have been changed. Furthermore, it is preferable that one of the holding members 12 and 13 and the gap plate 14 be made of a soft material; if both are made of a hard material, these parts may be distorted or dust may be trapped during assembly. This is because when this happens, gaps are created between the parts and the viscous material 2 tends to leak. Therefore, for example, if a hard material such as ordinary steel or rust-free steel is used as the holding material 12.13, the gap plate 14 may be made of a plastic material such as polyethylene chloride resin (trade name, Teflon) or brass. It is preferable to use a soft material such as , aluminum, etc., and in this way, leakage can be prevented without the use of a leakproofing material or an anti-leakage agent.

Note that if a soft material is used as the gap plate 14, especially when forming the arc-shaped discharge port 20, the gap plate 14 can be easily assembled when assembling the discharge part 21 without making the gap plate 14 strictly arc-shaped. It can be easily brought into close contact with the holding material 12.13.

In addition, the shape of the discharge port is a straight line as described above22.24
The shape 20 is not limited to an arc shape or a circular arc shape, but can be any shape that is a combination of a straight line, a curved line, and the like.

Furthermore, the number of discharge ports is not limited to one per discharge section, but as shown in FIG. A plurality of ejection ports may be formed for each part. 6, 16 is the hose 29, 30.3
This is a hose similar to 6, and the viscous material 2 that is pumped from the hose 16 into a space 17 serving as a liquid reservoir is effectively discharged from a plurality of discharge ports by the space 17.

Next, an embodiment of the method of the present invention which is carried out using the apparatus of the present invention having the above-mentioned configuration will be described. , 22 and 24 intermittently and apply the viscous material 2 to the moving object 1.

In this case, the viscous material 2 is preferably one with a viscosity of 300 to 500,000 centipoise, such as a shelf material such as true melt or cold boules, a paste material, printing ink, or a patch analgesic. The outlet pressure of the viscous material 2 from the pressure pump is the discharge port 2o, 22.24.
If the distance to is 1.0 to 5.0 meters, 1.
It is preferable to set it as 0-100Kg/cnl. To explain the embodiment in more detail, first, while the object 1 to be coated is moved in the direction of the arrow 28 by the moving mechanism, the object 1 is fed from the elongated discharge port 2'2.24 through the hose 29.30 by the pressure feeding mechanism. A viscous substance 2 is discharged onto an object 1 to be coated.

The purpose of discharging the viscous material 2 from the linear discharge ports 22 and 24 is to apply the viscous material 2 to a special shape 34 formed by combining the diagonal line portions 37, 3.8 and the crossing line portion 35.
3.25 are arranged as shown, they are applied at the same timing and the viscous material 2 is applied by the application length 39 of the shaded areas 37 and 38. When the coating on the shaded areas 37 and 38 is completed, the discharge of the viscous material 2 from the linear discharge ports 22 and 24 is stopped, and as the object 1 moves, the shaded areas 3
7. The front end 312 of 38 is the end 3 of the discharge port 20 having an arc shape.
3, the viscous material 2 is discharged from the arc-shaped discharge port 20. Therefore, in the case of the embodiment, the ejection is performed at a different timing from the ejection of the viscous material 2 from the arc-shaped ejection port 20. The viscous material 2 is discharged from the arc-shaped discharge port 20 until the applied length of the viscous material 2 matches the applied length 39 at the shaded portions 37 and 38. In this way, the viscous material 2 is applied by the arc-shaped discharge port 20 as shown in the cross line portion 35, and as a result, the viscous material 2 is applied to the diagonal line portions 37, 38 and the cross line portion 3.
The special shape 34 which is a combination of 5 and 5 is applied uniformly to the lower surface of the object 1 to be coated. By repeating the above operations, the viscous material 2 can be continuously applied to the object 1 in a special shape 34.

In the present invention, a plurality of discharge ports having various shapes are arranged in various manners, and the viscous material 2 is discharged from each of the discharge ports at various timings. As shown by the hatched areas 34 in FIGS. 7(a), (b), and (c), the viscous material 2 can be applied to the object 1 in various shapes such as repeated patterns or continuous patterns. Furthermore, the movement of the object 1 to be coated may be performed intermittently.

As described above, according to the present invention, by discharging the viscous material intermittently from a plurality of discharge ports, it is possible to easily apply the viscous material to the object to be coated in a special shape, and the application shape Changes can be made easily, and the application of a viscous substance can be reliably performed even in a dusty environment.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing how a conventional roll-type coating device is used, FIGS. 2 and 3 are a perspective view and a side view, respectively, showing how an embodiment of the device of the present invention is used, and FIG. FIG. 5 is an exploded perspective view of a discharge portion having an arc-shaped discharge port in an embodiment of the device of the present invention; FIG. 6 is an exploded perspective view of a discharge portion having a long linear discharge port in an embodiment of the device of the present invention is an exploded perspective view of a discharge section having divided discharge ports, FIG.
A), (B), and (C) are back views showing the manner of application to the object to be coated, respectively. 1... Object to be coated 2... Viscous material 20.22.24... Discharge port Patent applicant Kao Soap Co., Ltd. Figure 1 428-

Claims (1)

[Claims] (11) A method for applying a viscous material, characterized in that the viscous material is applied to a moving object by discharging the viscous material intermittently from a plurality of discharge ports. (2) At least Claim (1) characterized in that the timing of intermittent discharge of the viscous material discharged from one discharge port is different from the timing of intermittent discharge of the viscous material discharged from another discharge port. The method for applying a viscous substance as described in (3) a moving mechanism for an object to be coated, a plurality of discharge ports provided in the vicinity of a moving path of the object to be coated without overlapping in the direction of the moving path;
and a pumping mechanism for intermittently pumping the viscous material to the discharge port. (4) The viscous material coating device according to claim (3), wherein the discharge port has an elongated shape, and at least one discharge port is not provided in parallel with other discharge ports. . (5) The viscous material coating device according to claim (3), wherein the discharge port is held between holding members.