JP2015186791A - Application head, application device, and application method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an application head which enables easy adjustment of an application width in which a coating is applied to a coated material without being disassembled.SOLUTION: An application head includes: a pair of dies 11, 12 which forms a slit-like discharge port 13 for discharging a coating to a coated material; a first sim 15 which is disposed between the pair of dies 11, 12 along a longitudinal direction of the discharge port; and a second sim 16 which is provided at one longitudinal end in the first sim 15 so as to move relative to the first sim 15 in a longitudinal direction. The application head further includes an adjustment mechanism 21 including a moving member which moves the first sim 16 relative to the first sim 15 in the longitudinal direction; and a fixing member which fixes the second sim 16 moved relative to the first sim 15.

Description

  The present invention relates to a coating head, a coating apparatus, and a coating method for coating a material to be coated.

An application head used for applying a paint along a strip-shaped material to be applied is known (see Patent Document 1). An application head related to the present invention includes a pair of upper and lower dies that form a discharge port for discharging paint to a material to be applied.
At one end of the coating head, a pair of upper die and lower die are combined to open a slit-like discharge port. A manifold for storing the supplied paint is provided inside the coating head, and the manifold communicates with the discharge port.

  Between the upper die and the lower die, a base shim that regulates the film thickness of the coating applied to the material to be coated and a set of side shims that regulate the coating width to be applied along the width direction of the material to be coated are arranged. Has been. The base shim is formed in a rectangular plate shape, and is configured in a U shape as a whole so as to surround the manifold. The side shim is formed in a rectangular plate shape, and is disposed adjacent to both ends of the base shim in the longitudinal direction of the discharge port.

When coating is performed using the coating head configured as described above, the coating width for coating the coating material is changed along the width direction of the material to be coated according to the width of the belt-shaped material to be coated.
In the coating head, the longitudinal direction of the slit-shaped ejection port is arranged in parallel with the width direction of the material to be coated, and the coating width with respect to the width direction of the material to be coated is changed by changing the dimension in the longitudinal direction of the ejection port. Is changed.

JP 2004-24923 A

The above-described coating width not only depends on the opening width of the U-shaped base shim, but also the gap between the tip of the coating head where the discharge port opens and the backup roller that supports the material to be coated with the paint. It depends on the viscosity of the viscous fluid that is the paint. For this reason, when adjusting the coating width, the coating film thickness is adjusted by adjusting the gap between the tip of the discharge port of the coating head and the backup roller. However, when the film thickness of the coating is increased by widening the above-described gap, the coating width becomes narrow, and it is not easy to adjust to the desired coating width. Therefore, it is required to easily adjust to a desired coating width.
In the technique disclosed in Patent Document 1, it is possible to easily change to a desired coating width by exchanging a plurality of types of side shims formed to have a desired coating width. However, in the technique described in Patent Document 1, when changing the coating width, it is necessary to perform an operation of removing the coating head from the coating device or an operation of assembling the coating head to the coating device, and the changing operation is complicated. It was. In addition, since it takes time to change the coating width, there is a problem in that productivity is lowered.
Further, the technique described in Patent Document 1 has a disadvantage that it can be changed only to the coating width corresponding to a plurality of types of side shims prepared in advance, and the coating width cannot be finely adjusted.

  Therefore, an object of the present invention is to provide a coating head and a coating apparatus that can easily adjust a coating width for coating a coating material on a material to be coated without disassembling the coating head.

  In order to achieve the above-described object, a coating head according to the present invention includes a pair of dies that form a slit-shaped discharge port that discharges paint onto a material to be coated, and a longitudinal direction of the discharge port between the pair of dies. And a second shim provided at one end in the longitudinal direction of the first shim so as to be movable in the longitudinal direction with respect to the first shim. The coating head includes a moving member that moves the second shim in the width direction with respect to the first shim, and a fixing member that fixes the second shim moved with respect to the first shim. An adjustment mechanism is provided.

  Moreover, the coating device which concerns on this invention is provided with the said coating head and the supply part which supplies a coating material to a coating head.

  Moreover, the coating method which concerns on this invention applies a coating material to a to-be-coated material using the said coating device.

  According to the present invention, it is possible to easily adjust the application width for applying the paint to the material to be applied without disassembling the application head.

It is a schematic diagram which shows the coating device of this embodiment. It is a perspective view which shows the coating head with which the coating device of this embodiment is provided. It is a disassembled perspective view which shows the coating head of this embodiment. It is a top view which shows the adjustment mechanism which the coating head of this embodiment has. It is sectional drawing which shows the adjustment mechanism in this embodiment along an AA line. It is sectional drawing which shows the sealing mechanism in this embodiment along a BB line. It is a top view which shows the state which moved the side shim with the adjustment mechanism in this embodiment. It is a perspective view for demonstrating the other structural example of the adjustment mechanism in this embodiment.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, the schematic diagram of the coating device of this embodiment is shown. As shown in FIG. 1, the coating apparatus 1 of the present embodiment supports a coating head 3 that applies a coating material to a foil 4 as a material to be coated, a supply unit 5 that supplies the coating material to the coating head 3, and the foil 4. And a backup roller 6. Moreover, although not shown in figure, the coating device 1 is provided with the supply roll which supplies the foil 4 toward the coating head 3, and the winding roll which winds up the foil 4 with which the coating material was apply | coated.

  As the paint, a viscous fluid containing liquid or gel is used. As the material to be coated, a strip-shaped metal foil is used, but is not limited to a metal material, and other materials including, for example, a film material or a sheet material made of a resin material may be used. Further, the application head is not limited to the application of applying a paint to a flat material, and may be used to apply the paint to a flat surface of a three-dimensional object.

In FIG. 2, the perspective view of the coating head 3 with which the coating device 1 of this embodiment is provided is shown. FIG. 3 shows an exploded perspective view of the coating head 3 of the present embodiment.
As shown in FIGS. 2 and 3, the coating head 3 of this embodiment includes a pair of an upper die 11 and a lower die 12 that form discharge ports 13 that discharge paint onto the foil 4. The coating head 3 includes a base shim 15 as a first shim disposed between the pair of upper die 11 and lower die 12 along the longitudinal direction of the discharge port 13 (hereinafter referred to as the width direction W). A pair of side shims 16 as second shims provided at one end of the base shim 15 in the width direction of the discharge port 13 so as to be movable in the width direction W of the discharge port 13 with respect to the base shim 15. Yes.

  A slit-like discharge port 13 is formed at one end of the coating head 3 along the boundary between the upper die 11 and the lower die 12. The coating head 3 is arranged such that the width direction of the discharge port 13 is parallel to the width direction of the foil 4 orthogonal to the conveying direction of the foil 4 supplied toward the coating head 3.

The upper die 11 and the lower die 12 are formed with semi-cylindrical manifold portions 17a and 17b, respectively. By combining the pair of the upper die 11 and the lower die 12, the paint is uniformly discharged from the discharge port 13. A cylindrical manifold 17 is formed. The manifold 17 is formed along the width direction of the discharge port 13 and communicates with the discharge port 13.
Further, the lower die 12 is provided with a supply path 18 for supplying paint to the manifold 17 as shown in FIG.

As shown in FIG. 3, the base shim 15 is formed in a rectangular plate shape, and is configured in a U shape as a whole so as to surround the manifold 17. The base shim 15 has a concave opening 15 a formed by cutting out one side end parallel to the width direction of the discharge port 13. The base shim 15 regulates the film thickness of the coating applied on the foil 4 by separating the facing distance between the pair of upper die 11 and lower die 12 by a predetermined distance.
The side shims 16 are formed in a rectangular plate shape and are disposed adjacent to both ends of the base shim 15 in the width direction of the discharge port 13. The pair of side shims 16 regulate the coating width to be applied along the width direction of the foil 4, where the opposing interval with respect to the width direction of the discharge port 13 is separated by a predetermined interval.

  Further, the coating head 3 is an adjustment mechanism 21 for adjusting the position of the side shim 16 with respect to the base shim 15 in the width direction W of the discharge port 13 and a pressing mechanism that urges the base shim 15 and the side shim 16 to contact each other. And a sealing mechanism 22.

In FIG. 4, the top view of the adjustment mechanism 21 which the coating head 3 of this embodiment has is shown. FIG. 5 shows a cross-sectional view of the adjusting mechanism 21 in the present embodiment along the line AA in FIG. FIG. 6 shows a cross-sectional view of the sealing mechanism 22 in the present embodiment along the line BB in FIG. In FIG. 7, the top view of the state which moved the side shim 16 with the adjustment mechanism 21 in this embodiment is shown.
As shown in FIG. 4, the adjusting mechanism 21 fixes the eccentric shaft 24 and the side shim 16 moved relative to the base shim 15 as a moving member that moves the side shim 16 in the width direction W of the discharge port 13 with respect to the base shim 15. The adjusting mechanism 21 has a pair of first guide holes 26 as guide portions that guide the side shims 16 so as to be movable only in the width direction W of the discharge ports 13. Have. The adjusting mechanism 21 includes a cam 27 serving as an operating portion provided on the eccentric shaft 24 and contacting the side shim 16, and a second guide hole forming a contact portion provided on the side shim 16 and contacting the cam 27. 28.

An elliptical cam 27 that rotates about the axis is fixed to the eccentric shaft 24. Further, a groove 24a for rotating the eccentric shaft 24 using a tool such as a flat-blade screwdriver is provided at one end of the eccentric shaft 24. The lower die 12 is provided with a shaft hole 12a into which the other end of the eccentric shaft 24 is rotatably inserted.
The guide shaft 25 has a head portion 25 a that engages with the upper die 11 at one end, and a screw portion 25 b that is fixed to the lower die 12 at the other end. The upper die 11 is provided with a shaft hole 11a through which the guide shaft 25 is inserted. The lower die 12 is provided with a screw hole 12b to which the screw portion 25b of the guide shaft 25 is fixed.

As shown in FIG. 5, the adjustment mechanism 21 includes a holder member 31 that holds the eccentric shaft 24 and a fixing screw 32 that fixes the holder member 31 to the upper die 11. The holder member 31 has a shaft hole 31a through which one end of the eccentric shaft 24 is inserted. The upper die 11 has an opening 11b to which the holder member 31 is attached.
The first guide hole 26 is a long hole extending along the width direction of the discharge port 13, and the guide shaft 25 is movably inserted therethrough. The pair of first guide holes 26 are respectively formed at both ends of the side shim 16 and are arranged on a straight line parallel to the width direction W of the discharge port 13.
The second guide hole 28 is a long hole extending in a direction orthogonal to the longitudinal direction of the first guide hole 26, and is formed in the center portion of the side shim 16. A cam 27 fixed to the eccentric shaft 24 is disposed in the second guide hole 28 so as to be rotatable about the axis of the eccentric shaft 24. The inner surface of the second guide hole 28 functions as a contact portion with which the cam 27 contacts.

As shown in FIG. 4, the seal mechanism 22 has a cutout portion 34 formed at one side end of the side shim 16 adjacent to the base shim 15. Further, the seal mechanism 22 includes an elastic member 35 disposed in the notch 34 so as to be elastically deformable, a pressing screw 36 as a pressing member provided so as to be movable toward and away from the elastic member 35, and have.
As the elastic member 35, a cylindrical rubber material is used. When the elastic member 35 is elastically deformed, the elastic member 35 expands in the notch 34, thereby generating a biasing force so that the base shim 15 and the side shim 16 are pressed against each other. Therefore, the elastic member 35 included in the sealing mechanism 22 functions as a sealing material that prevents the paint from leaking between the base shim 15 and the side shims 16.
As shown in FIG. 6, the pressing screw 36 is disposed at a position facing the one end of the elastic member 35 in the upper die 11. The upper die 11 is provided with a screw hole 11 c at a position corresponding to the elastic member 35. The pressing screw 36 has a screw portion 36 a that meshes with the screw hole 11 c of the upper die 11. A groove (not shown) with which the tool engages is formed on the end face of the screw portion 36a.
In the seal mechanism 22 according to the present embodiment, the cutout portion 34 is formed in the side shim 16, but is not limited to this configuration. In the sealing mechanism, a notch may be formed in the base shim 15, and the same effect as in the present embodiment can be obtained.

The operation of the coating head 3 configured as described above for adjusting the coating width will be described.
First, the application head 3 loosens the screw portion 25b of the guide shaft 25 that fixes the position of the side shim 16 with respect to the base shim 15, so that the side shim 16 discharges to the base shim 15 between the upper die 11 and the lower die 12. It becomes possible to move in the width direction W of the outlet 13.
By rotating the eccentric shaft 24 using a tool engaged with the groove 24 a of the eccentric shaft 24, the cam 27 fixed to the eccentric shaft 24 rotates in the second guide hole 28. As the cam 27 rotates, the second guide hole 28 is moved, and the side shim 16 is moved. At this time, as shown in FIG. 7, the side shim 16 is moved in the width direction W of the discharge port 13 by the guide shaft 25 moving along the longitudinal direction of the first guide hole 26.
In the sealing mechanism 22, the elastic member 35 is compressed and elastically deformed by rotating the screw portion 36 a of the pressing screw 36 so that one end of the pressing screw 36 presses the elastic member 35. The elastic member 35 that has been elastically deformed spreads in the notch 34, and the base shim 15 and the side shim 16 are urged so that the base shim 15 and the side shim 16 are pressed against each other. Further, when the pressing screw 36 is rotated in a direction away from the elastic member 35, the elastic member 35 returns to the initial shape by the elastic force.

As described above, the coating head 3 according to the embodiment includes the adjustment mechanism 21 that adjusts the position of the side shim 16 in the width direction W of the discharge port 13 with respect to the base shim 15. This makes it possible to easily adjust the coating width without disassembling the coating head 3 and removing and attaching the coating head 3 to the coating apparatus 1.
In addition, the coating head 3 of the embodiment can finely adjust the coating width by adjusting the position of the side shim as necessary.
Therefore, according to the coating head 3, the coating width can be easily changed in a short time, and productivity can be improved.

In the present embodiment, the first guide hole 26 and the second guide hole 28 are formed so as to penetrate the side shim 16 as guide parts that guide the side shim 16 so as to be movable in the width direction W. It is not limited to the structure to do. As a modified example of the guide portion, as shown in FIG. 8, the side shim 16 has a first recess 41 having a guide wall 41a with which the guide shaft 25 abuts, and a guide wall 42a with which the cam 27 of the eccentric shaft 24 abuts. A second recess 42 may be formed.
The coating apparatus 1 of the present embodiment is configured to perform coating on the foil 4 supplied to the fixed coating head 3, but performs coating while moving the coating head 3 relative to the foil 4. It may be configured as follows.

DESCRIPTION OF SYMBOLS 1 Coating device 3 Coating head 4 Foil 11 Upper die 12 Lower die 13 Discharge port 15 Base shim 16 Side shim 21 Adjustment mechanism 24 Eccentric shaft 25 Guide shaft

Claims (6)

A pair of dies forming a slit-like discharge port for discharging paint onto a material to be coated;
A first shim disposed along the longitudinal direction of the discharge port between the pair of dies;
A second shim provided at one end in the longitudinal direction of the first shim so as to be movable in the longitudinal direction with respect to the first shim;
An adjustment comprising: a moving member that moves the second shim in the longitudinal direction relative to the first shim; and a fixing member that fixes the second shim moved relative to the first shim. Mechanism,
An application head comprising:   The adjustment mechanism is provided in the second shim, a guide portion that guides the second shim so as to be movable in the longitudinal direction, an operating portion that is provided on the moving member and contacts the second shim. The coating head according to claim 1, further comprising: an abutting portion against which the operating portion abuts.   The coating head according to claim 1, further comprising a pressing mechanism that biases the first shim and the second shim so as to contact each other.   The pressing mechanism includes a cutout portion formed between the first shim and the second shim by cutting out the first shim or the second shim, and elastic in the cutout portion. The coating head according to claim 3, comprising: an elastic member arranged so as to be deformable; and a pressing member provided so as to be movable in a direction in which the elastic member is moved toward and away from the elastic member. An application head according to any one of claims 1 to 4,
And a supply unit that supplies a coating material to the coating head.   A coating method for coating a material to be coated with the coating apparatus according to claim 5.

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