JPS6253767A - Apparatus for applying viscous material - Google Patents

Abstract

PURPOSE:To easily perform the coating of a special shape and to also facilitate the alteration of the shape, by providing a value and a branched part to the route of a viscous material and intermittently feeding out the viscous material from the branched part to a plurality of emitting ports not overlapped to each other. CONSTITUTION:In a coating apparatus, a valve 4 and a branched part 5 are provided to the route of a viscous material, and emitting parts 8, 9 having emitting ports 6, 7 each having an elongated rectangular cross-section are formed to the branched part 5 so that the emitting ports 6, 7 are not mutually overlapped in the moving route direction 31 of an article 1 to be coated such as a sheet and contacted with the back surface of the article 1 to be coated from below. Therefore, the coating of the article 1 to be coated with viscous materials 2, 3 is performed by moving the valve 14 up and down and intermittently emitting the viscous material to the article 1 to be coated during movement from the emitting ports 6, 7. The shapes of the viscous materials 2, 3 can be altered by the arrangement state of the emitting ports 6, 7, the shapes thereof and the emitting time of the viscous materials.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a viscous material coating device that applies a viscous material to an object to be coated in a special shape.

[Conventional technology]

Conventionally, as shown in FIG. 1O, when applying a viscous substance 2 such as a pressure-sensitive adhesive or an adhesive to a special shape on an object l such as a sheet, the viscous substance 2 sent through a hose 41 is A roller 45 having a recess 44 for holding the viscous material 2 is provided in a box 43 having a space 42 in which the viscous material 2 is temporarily stored. Scrape off the viscous material 2 adhering to the board (
A roll-type coating device was used in which the coating was scraped off with a doctor knife) 47.

Further, the above-mentioned coating can also be carried out using a pressure-feed type coating device as shown in FIG. 1) and FIG. 12. The illustrated pressure-feed coating device has an elongated discharge port 51,
52.53 with three discharge parts 54, 55.56,
Discharge portions 51, 52, .
The viscous material 2 that is intermittently pumped into the interior of 53 at desired timing is intermittently discharged from the discharge ports 51, 52, and 53 to apply it to the moving object 1.
There is no way to synthesize the application shapes of viscous substances from 52 and 53 to obtain a special application form. As shown in FIGS. 13 and 14, the discharge parts 54, 55, and 56 in this pressure-feeding coating device are a holding part 62 and a presser part 6, respectively, which have a communication hole 61 to the viscous material pressure-feeding mechanism.
A gap plate 64 usually made of a soft material is sandwiched between the gap plate 64 and the gap plate 64, and a notch 65 formed in the gap plate 64 forms a discharge port communicating with the communication hole 61.

[Problem that the invention seeks to solve]

However, in the roll-type coating device, the viscous material 2 is transferred from the concave portion 44 of the roller 45 due to its original nature.
100% is not transferred to the object 1, and the concave portion 44
It always remains. Therefore, if there is dust near this device, the dust will adhere to this residual viscous material 2, and again,
Even if a scraping plate 48 is provided on the opposite side of the roller 45 in order to prevent or enter the box 43, at the boundary 49 between the roller 6 and the scraping plate 48,
There was a problem that this dust would accumulate and cause trouble.

Further, when changing the coating shape in the roll-type coating device, no matter how small the change, the entire roller 45 must be replaced, which is not economical.

In addition, in the pressure-feed coating device, there is no problem with dust as described above, and it is possible to easily change the coating shape, change the discharge port, change the mounting position of the discharge part, etc. .56 and a pumping mechanism that pumps viscous material intermittently are connected by long hoses such as 58' and 59.60, which requires a large space and prevents viscous material from entering the hose. There was a problem that caused trouble due to the residue. Furthermore, in order to obtain the desired coating shape, it is necessary to bring each presser portion 63 and the discharge ports 51, 52, 53 into surface contact with the object to be coated. In this case, it was difficult to adjust the installation of the respective discharge portions 54, 55, and 56.

Furthermore, there is a very small gap 6 between the object to be coated l and the holding part 62.
6 is required and fine adjustment is required, but the gap plate 64
is sandwiched between the holding part 62 and the pressing part 63 to remove the gap plate 64.
It was also difficult to make such fine adjustments because it was also necessary to adjust them to predetermined positions. Furthermore, if the gap @64 is distorted or if dust or the like is caught during assembly, a gap will be created in the discharge section, and the viscous material 2 will leak from this gap.

Therefore, an object of the present invention is to solve the above-mentioned problems, to be able to reliably apply a viscous substance even in a dusty environment, to easily change the application shape depending on the purpose, and to save space. It is an object of the present invention to provide a coating device for a viscous material that can prevent leakage of the viscous material from the discharge section and easily adjust the gap between the object to be coated and the discharge section.

[Means for solving problems]

The present invention provides a valve and a branch part in a path of a viscous material, a discharge part having a plurality of discharge ports each having an elongated cross section in the branch part, and a plurality of discharge ports that are connected to a moving path of a material to be coated. The above object has been achieved by providing a viscous material application device characterized in that the devices are arranged so as not to overlap with each other in the direction.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the viscous material coating apparatus of the present invention shown in the drawings will be described below.

In FIGS. 1 and 2, 1 is an object to be coated, such as a sheet body, which is moved in the direction of an arrow 31 by a moving mechanism (not shown) consisting of a feed roll and a take-up roll, and 2 and 3 are objects according to the present invention. The viscous material is applied to the back surface of the object to be coated l by the viscous material applicator of the present invention. , a discharge part 8 having a discharge port 6.7 having an elongated rectangular cross section.
9, the discharge port 6.7 is in the moving path direction 31 of the object to be coated l.
They are arranged so that they do not overlap with each other and are in contact with the back surface of the object 1 from below. and,
The branch part 5 is connected to the valve body 10 via the valve seat 1), and the discharge part 8.9 is formed at the upper part of the branch part 5. Furthermore, the path of the viscous substance passes from a pressure feeding mechanism (not shown) consisting of a gear pump, a viscous substance tank, etc., through a hose (not shown), and through the valve body 10 and the valve seat 1).
It branches into two parts at the branch part 5, and each has a discharge part 8.9.
There is no hole that passes through the hole and reaches the discharge port 6.7.

To explain the embodiment in more detail, the valve 4 has its valve stem connected to the viscous material path 12 in the valve body 10 and the valve seat 1).
It is inserted into the path 13 of the viscous material, and inserted into the valve receiving part 14 which is provided with its head opening downward at the lower part of the branch part 5. In this case, the valve 4 is constituted by an electromagnetic valve, and is designed to move in the directions of arrows 32 and 33 at arbitrary timings so as to be able to intermittent the discharge of the viscous material at arbitrary timings.

In addition to the valve receiving portion I4, the branching portion 5 has a groove 15 that communicates with the valve receiving portion 14 and opens on the upper surface of the branching portion 5 to form a path for the viscous material. , the groove 15 is
The upper surface of the branching portion 5 has an elongated opening in a direction perpendicular to the moving direction of the object 1 to be coated.

In addition, the above-mentioned discharge section 8.9 is shown in FIGS. 3 and 4, respectively.
As shown in the figure, it is composed of a holding part 16 fixed to the branch part 5 and a presser part 17 fixed to the holding part 16. Each holding part 16 has a communication passage 18 that opens at a contact surface to the upper surface of the branch part 5 and a contact surface to the presser part 17 and forms a path for viscous material, and the communication hole 18 is A long bolt hole is provided in the branch portion 5 in communication with the groove 15 of the portion 5;
The assembly position can be adjusted using assembly means such as tightening bolts. Further, each of the presser parts 17 is connected to the holding part 16.
It has a recess 19 that is open at the top on the contact surface,
The concave portion 19 is communicated with the communication passage 18 of the holding portion 16, and the height of the recessed portion 19 is assembled to the holding portion 16 by means of an elongated bolt hole, a tightening bolt, etc., so that the height can be adjusted. There is no gap 20 so that an appropriate minimum gap 20 can be formed between the coating surface and the coating surface of the object 1 to be coated. And presser part 17.17
By such assembly to the holding part 16.16, discharge ports 6.7 are formed at the upper ends of the recesses 19.19, respectively. In this embodiment, the formed discharge ports 6 and 7 are arranged in a V-shape with respect to the moving path direction of the object 1 to be coated.

Since the viscous material applicator of the present invention is configured as described above, the viscous material 2.3 is applied to the object 1 by moving the valve 14 up and down from the discharge port 6.7. This can be done by intermittently discharging No. 3 onto the moving object 1. As a result, the viscous material 2.3 is intermittently and uniformly applied to the lower surface of the object 1 in a special shape as shown in FIG.

The viscous material 2.3 is preferably one having a viscosity of 300 to 500,000 centipoise, such as a hot melt, a pasty material such as a cold bouquet, a printing ink, or a patch analgesic.

The shape of the application of the viscous substances 2 and 3 can be changed depending on the arrangement and shape of the discharge ports 6 and 7, and the time period for which the viscous substances are discharged from the discharge ports 6 and 7.

That is, the front l in the direction intersecting the moving direction 31 of the object 1 to be coated.
& The shape and spacing of the edges can be changed according to the shape and spacing of the discharge ports 6, 7, and the length of the front and rear edges can be changed according to the length of the discharge ports 6.7. Furthermore, the length of the object 1 in the moving direction 31 can be changed depending on the time period for which the viscous material is discharged from the discharge port 6.7. Therefore, for example, instead of arranging the discharge ports 6, 7 in a V-shape with respect to the moving direction 31 of the object 1 as shown in FIG. If the discharge ports 6.7 are arranged substantially at right angles to the moving direction 31 of the coating material 1, the length of the discharge ports 6.7 is shortened, and the distance between the discharge ports 6.7 is increased, the viscosity can be reduced as shown in FIGS. 5 and 6. The front and rear edges of the object 2.3 can be changed into two line segments spaced apart and perpendicular to the moving direction of the object 1, as shown in FIGS. 5 and 6. In addition, it is also possible to obtain the coating shapes of the viscous material as shown in FIGS. 7 to 9, for example. That is, FIG. 7 shows the application shape of the viscous material 2.3 when the discharge ports 6.7 in FIGS. 5 and 6 are lengthened and the distance between them is narrowed, and FIG. Figure 9 shows the application shape of the viscous material 2°3 when the discharge ports 6.7 in Figure 2 are shortened and the distance between them is increased.
The figure shows the application shape when another discharge port (not shown) is arranged between the discharge ports 6.7 in FIG. 8 and another viscous material 23 is applied between the viscous materials 2.3. . Furthermore, although not shown, if the discharge ports are provided without spacing in the direction perpendicular to the moving direction 31 of the object 1 to be coated, the viscous material discharged from each discharge port can be made to flow continuously. .

Although the embodiments of the viscous material applicator of the present invention shown in the drawings have been described above, the viscous material applicator of the present invention is not limited to these embodiments. The shape may be an elongated shape, for example, an arc shape or a shape that is an arbitrary combination of a straight line and a curved line. Further, the discharge port 6.7 is connected to the holding part 16 and the pressing part 1.
Although it is preferable to provide the concave portion 19 on the contact surface with the discharge port 7, even in that case, contrary to the embodiment, a concave portion 19 for forming a discharge port can be formed in the holding portion 16. Further, the number of discharge ports can be three or more. Further, in the embodiment, the path of the viscous material is branched after passing through a valve, but a valve may be provided in each branched path after the branching, and in that case, the path of the viscous material is separated from the respective discharge ports at different timings. Since it becomes possible to discharge the viscous material, it becomes possible to select the application shape of the viscous material from a wider range. Also, the discharge part 8.9
The device may be equipped with an electric heater for temperature control, a temperature sensor, etc., if necessary.

Furthermore, contrary to the embodiment, the discharge portion 8.9 may be provided so as to contact the surface of the object l from above.

〔Effect of the invention〕

Like the ridges, the viscous material applicator of the present invention does not require a large space, and according to the viscous material applicator of the present invention, the viscous material is intermittently discharged from a plurality of discharge ports. This allows the viscous material to be easily applied to the object to be coated in a special shape, the application shape can be easily changed, and the viscous material can be applied reliably even in dusty environments. In addition, as in the example, by forming the discharge part with a structure without a conventional gap plate, leakage of viscous material at the discharge part can be prevented and the gap between the object to be coated and the holding part can be adjusted. It has great effects, such as being able to easily carry out the process.

[Brief explanation of drawings]

FIGS. 1 and 2 are a perspective view and a sectional view showing an embodiment of the present invention together with its mode of use, and FIGS. 3 and 4 respectively.
The figures are exploded perspective views from one side and the other side of the discharge part, respectively; FIG. 5 is a perspective view showing an outline of another embodiment of the present invention together with its mode of use; FIGS. 6 and 7. Figures 8 and 9 are rear views showing different coating modes on the object to be coated, respectively. Figure 10 is a perspective view showing how a conventional roll coating device is used, Figures 1) and 12. Each uses a conventional pressure-feed coating device! A perspective view and a side view showing @, and FIGS. 13 and 14 are exploded perspective views of the discharge section of a conventional pressure-feed coating device from one side and the other side, respectively. l...Object to be coated 2, 3. 23...Viscous material 4...Valve 5...Branch portion 6.7...Discharge port 8.9...Discharge portion 31...Movement path direction of the object to be coated Fig. 3 Fig. 4 Fig. 6 Fig. 7 Figure 8 Figure 9 Figure 10

Claims (2)

[Claims] (1) A valve and a branch part are provided in the path of the viscous material, and a discharge part having a plurality of discharge ports with an elongated cross section is provided in the branch part,
A coating device for a viscous material, characterized in that a plurality of the discharge ports are provided so as not to overlap with each other in the moving path direction of the object to be coated. (2) The discharge part includes a holding part fixed to the branch part and a presser part fixed to the holding part, and the discharge port is provided on a contacting and opposing surface of the holding part and the presser part. There is,
A viscous substance coating device according to claim (1).