JPH049112B2 - - Google Patents

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. 10, when applying a viscous substance 2 such as a pressure-sensitive adhesive or adhesive to a workpiece 1 such as a sheet in a special shape, the viscous substance 2 sent through a hose 41 is Box 4 having a temporary storage space 42
3, a roller 45 having a recess 44 for holding the viscous material 2 is provided, and this roller 45
A roll-type coating device was used in which the viscous material 2 adhering to areas other than the recessed portions 44 is scraped off with a scraping plate (doctor knife) 47 by rotating the roller in the direction of an arrow 46 .

Moreover, the above-mentioned coating is shown in FIGS. 11 and 12.
The coating can also be carried out using a pressure-feed coating device as shown in the figure. The illustrated pressure-feed coating device has three discharge portions 54, 55, 56 each having elongated discharge ports 51, 52, 53, arranged so as not to overlap with each other in the moving path direction 57 of the object to be coated 1, Discharge portions 51, 5 are supplied from a viscous material pumping mechanism (not shown) via hoses 58, 59, 60, respectively.
The viscous material 2 is intermittently pumped into the containers 2 and 53 at desired timing, and is intermittently discharged from the discharge ports 51, 52, 53 to apply it to the moving object 1,
The application shapes of the viscous material from the respective discharge ports 51, 52, and 53 are combined to obtain a special application shape. The discharge parts 54, 55, and 56 in this pressure-feeding coating device each include a holding part 62 and a presser part 63, each having a communication hole 61 to the viscous material pumping mechanism, as shown in FIGS. 13 and 14. A gap plate 6 usually made of soft material between
4 is sandwiched therebetween, and a notch 65 formed in the gap plate 64 forms a discharge port communicating with the communication hole 61.

[Problems to be Solved by the Invention] However, in the roll-type coating device, 100% of the viscous material 2 is not transferred from the recess 44 of the roller 45 to the object 1 due to its inherent properties. , always remains in the recess 44. Therefore, if there is dust near this device, the dust may adhere to the residual viscous material 2 and enter the box 43 again. Even if the scraping plate 48 is provided, the boundary 4 between the roller 6 and the scraping plate 48
9, there was a problem in which this dust accumulated and caused trouble. Furthermore, 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, the discharge port, and the mounting position of the discharge part. , 56 and the pumping mechanism that pumps the viscous material intermittently are connected by long hoses 58, 59, 60, etc., which requires a large space and prevents the viscous material from remaining in the hose. There was a problem that caused trouble. In addition, in order to obtain the desired coating shape, each presser portion 63 and the discharge ports 51, 52, 53 should be connected to the object 1 to be coated.
Although it is necessary to make surface contact with the plurality of discharge ports 51,
When the discharge portions 52 and 53 are separated from each other, it is difficult to attach and adjust the discharge portions 54, 55, and 56.
Furthermore, an extremely small gap 66 is required between the object to be coated 1 and the holding part 62, and fine adjustment is necessary; however, by holding the gap plate 64 between the holding part 62 and the holding part 63 Since the gap plate 64 also needs to be adjusted to a predetermined position, such fine adjustment is also difficult. Furthermore, if the gap plate 64 is distorted or dust or the like is caught during its assembly, a gap will be created in the discharge section, causing problems such as leakage of the viscous material 2 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 material even in a dusty environment, to easily change the application shape according to the purpose, and to save space. It is an object of the present invention to provide a viscous material coating device that does not require a viscous material, prevents leakage of the viscous material from the discharge section, and can easily adjust the gap between the object to be coated and the discharge section.

[Means for Solving the Problems] The present invention provides a valve in the path of the viscous material being pumped, a branching section having a branched path for branching the viscous material after passing through the valve, and A plurality of discharge portions each having a discharge port having an elongated cross section are arranged in series in the section, and the discharge port of each of the discharge portions is arranged in a row.
The distal ends thereof are located on the same plane so as not to overlap with each other in the movement path direction of the object to be coated, and each of the plurality of discharge parts is connected to a holding part fixed to the branch part. To provide a viscous material application device, comprising a presser part fixed to a holding part, and the discharge ports are provided on opposing faces of the holding part and the presser part, respectively. The above objective has been achieved by this.

〔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.

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 1 by the viscous material applicator of the present invention. , the discharge parts 8 and 9 having the discharge ports 6 and 7 having elongated and rectangular cross sections are arranged so that the discharge ports 6 and 7 do not overlap with each other in the moving path direction 31 of the object 1 to be coated, and are arranged downwardly on the back surface of the object 1 to be coated. The structure is such that the two sides are in contact with each other. The branch portion 5 is connected to the valve body 10.
The discharge parts 8 and 9 are formed at the upper part of the branch part 5. Further, the path of the viscous substance passes from a pressure feeding mechanism (not shown) consisting of a gear pump, a viscous substance tank, etc., passes through a hose (not shown), passes through the valve body 10 and the valve seat 11, and passes through the branch portion 5. It branches into two parts and passes through the discharge portions 8 and 9, respectively, and reaches the discharge ports 6 and 3.

To explain the embodiment in more detail, the valve 4 includes:
The valve stem portion is connected to the path 1 of the viscous material in the valve body 10.
2 and into the viscous material path 13 of the valve seat 11, and its head is inserted into the valve receiving part 14 provided in the lower part of the branch part 5 with a downward opening. In this case, the valve 4 is composed of a solenoid valve, and moves in the directions of arrows 32 and 33 at arbitrary timing.
The discharge of the viscous material can be interrupted at any timing.

Further, the branch portion 5 includes, in addition to the valve receiving portion 14,
It has a groove 15 communicating with the valve receiving part 14 and opening on the upper surface of the branching part 5 to form a path for the above-mentioned viscous material. It has a long and narrow opening in the direction that intersects the direction of movement.

Further, each of the discharge parts 8 and 9 is composed of a holding part 16 fixed to the branch part 5 and a presser part 17 fixed to the holding part 16, as shown in FIGS. 3 and 4, respectively. It has been done. 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. Moreover, each of the above-mentioned presser parts 17
has a recess 19 opened upward on the contact surface to the holding part 16, and the recess 19 is communicated with the communication passage 18 of the holding part 16, so that the holding part 16 is provided with a long bolt hole and a tightening bolt. The height of the assembly can be adjusted using an assembly means such as the above, so that an appropriate minimum gap 20 can be formed between the upper surface of the holding part 16 and the coating surface of the object 1 to be coated. . And presser part 1
By assembling 7 and 17 to the holding parts 16 and 16 in this manner, discharge ports 6 and 7 are formed at the upper ends of the recesses 19 and 19, respectively. In this embodiment, the formed discharge ports 6 and 7 are arranged in a V-shape with respect to the movement 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 materials 2 and 3 are applied to the object 1 by moving the valve 14 up and down from the discharge ports 6 and 7. This can be done by intermittently discharging No. 3 onto the moving object 1. As a result, the first
The viscous substances 2 and 3 are intermittently and uniformly applied to the lower surface of the object 1 to be coated in a special shape as shown in the figure.
As the viscous materials 2 and 3, those having a viscosity of 300 to 500,000 centipoise are preferable, such as glue materials such as hot melt and cold glue, paste materials, printing inks, and patch-type analgesics.

Thus, the shape of application of the viscous substances 2 and 3 can be changed by 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 shape and spacing of the front and rear edges in the direction intersecting the moving direction 31 of the object to be coated 1 are determined by the discharge ports 6 and 7.
can be changed according to the shape and spacing of
Further, the length of the front and rear edges can be changed depending on the length of the discharge ports 6 and 7, and furthermore, the length of the moving direction 31 of the object to be coated 1 depends on the viscosity from the discharge ports 6 and 7. It can be changed depending on the discharge time of the object. Therefore, for example, instead of arranging the discharge ports 6 and 7 in a V-shape with respect to the moving direction 31 of the object 1 as shown in FIG. 1, the discharge ports 6 and 7 can be arranged as shown in FIG. If the discharge ports 6 and 7 are arranged substantially at right angles to the moving direction 31 of the object 1 to be coated, and the lengths of the discharge ports 6 and 7 are shortened, and the discharge ports 6 and 7 are spaced apart, as shown in FIGS. 5 and 6,
The front and rear edges of the viscous materials 2 and 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. or,
In addition, it is possible to obtain 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 substances 2 and 3 when the discharge ports 6 and 7 in FIGS. 5 and 6 are lengthened and the distance between them is narrowed, and FIG. FIG. 9 shows the application shape of the viscous substances 2 and 3 when the discharge ports 6 and 7 in FIG.
Another discharge port (not shown) is arranged between the discharge ports 6 and 7 in FIG.
The shape of the coating when No. 3 is applied is shown. Furthermore, although not shown, the discharge port is set in the moving direction 3 of the object 1 to be coated.
If they are provided without spacing in the direction perpendicular to 1, the viscous material discharged from each discharge port can be made to flow continuously.

Although the embodiments of the viscous material coating device of the present invention shown in the drawings have been described above, the viscous material coating device of the present invention is not limited to these embodiments. For example, the shape of the discharge ports 6 and 7 may be an elongated shape, and may be, for example, an arc shape or a shape that is an arbitrary combination of a straight line and a curved line.
Further, it is preferable that the discharge ports 6 and 7 are provided at the contact surface between the holding part 16 and the presser part 17, but even in that case, contrary to the embodiment, the concave part 1 where the discharge ports should be formed is
9 can be formed on the holding part 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 this 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. Further, the discharge portions 8 and 9 may be equipped with an electric heater for temperature control, a temperature sensor, etc., if necessary. Further, the discharge portions 8 and 9 may be provided so as to contact the surface of the object 1 from above, contrary to the embodiment.

〔Effect of the invention〕

According to the viscous material applicator of the present invention, a valve is provided in the path of the viscous material being pumped, and a branching section having a branched path for branching the viscous material after passing through the valve is provided. , a plurality of discharge portions each having a discharge port having an elongated cross section are arranged in a row, and the tip portions of each of the discharge ports of the discharge portions are arranged so as not to overlap with each other in the movement path direction of the object to be coated. Since they are located on the same plane, the following effects are achieved.

In other words, there is no dust problem like with roll-type coating equipment, and the viscous material can be reliably applied even in dusty environments.In addition, the viscous material can be intermittently discharged from multiple discharge ports using valves. ,
The viscous material can be easily applied to the object to be coated in a special shape without pulling strings, and the application shape can be changed by changing the arrangement of the discharge port or changing the viscous material discharge time using a valve. Furthermore, unlike conventional pressure-feeding applicators, the multiple discharge parts and the pressure-feeding mechanism that pumps the viscous material intermittently can be connected using a long object such as a hose. There is no need to do this and it does not require a lot of space.

Further, according to the viscous substance applicator of the present invention, each of the plurality of discharge parts includes a holding part fixed to the branch part and a presser part fixed to the holding part, and the discharge port is , are provided on the contacting and opposing surfaces of the holding part and the pressing part, respectively.
The following effects are produced.

In other words, the discharge section can be configured without providing a gap plate as in conventional pressure-feed coating devices, preventing leakage of viscous material at the discharge section, and making it easy to adjust the gap between the object to be coated and the holding section. Furthermore, the shape of the coating can be changed more easily by changing the holding part and the pressing part.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are a perspective view and a cross-sectional view showing an embodiment of the present invention together with its mode of use, respectively;
3 and 4 are exploded perspective views of the respective discharge portions from one side and the other side, FIG. 5 is a perspective view schematically showing another embodiment of the present invention together with its usage mode, and FIG. 7, 8, and 9 are back views showing different coating modes on the object to be coated, respectively. FIG. 10 is a perspective view showing how a conventional roll-type coating device is used, and FIG. 11 and FIG. FIG. 12 is a perspective view and a side view, respectively, showing how a conventional pressure-feed coating device is used, and FIGS. 13 and 14 are views of the discharge section of the conventional pressure-feed coating device from one side and the other side, respectively. It is an exploded perspective view. 1...Object to be coated, 2, 3, 23...Viscous material, 4
... Valve, 5 ... Branch, 12 ... Viscous substance path,
15... Groove (branched viscous substance path), 6, 7...
...discharge port, 8, 9...discharge part, 16...holding part,
17... Pressing portion, 31... Movement path direction of the object to be coated.

Claims (1)

[Claims] 1. A valve is provided in the path of the viscous material being pumped, a branching section having a branched path for branching the viscous material after passing through the valve is provided, and each branching section has a discharge port with an elongated cross section. A plurality of discharge parts are arranged in a row, and each of the discharge ports of each of the discharge parts is located on the same plane so that the discharge ports thereof do not overlap with each other in the movement path direction of the object to be coated, and Each of the discharge parts includes a holding part fixed to the branch part and a presser part fixed to the holding part, and each of the discharge ports includes:
A viscous substance application device, characterized in that it is provided on a contacting and opposing surface of the holding portion and the pressing portion.