JP6386882B2 - Die head - Google Patents

Description

  The present invention relates to a die head that discharges a coating liquid onto a sheet-like workpiece.

2. Description of the Related Art A die coating type coating apparatus that applies a coating liquid to a sheet-like workpiece has been put into practical use. The coating apparatus includes a die head in which a slit-like discharge port for discharging a coating liquid onto an object to be coated is formed. The die head includes two die blocks each having a rectangular plane portion opposed to each other, and shims interposed between the plane portions on both ends in the longitudinal direction (for example, Patent Document 1). A discharge port is formed by each die block and shim. A flow path for the coating liquid is formed inside the die head, and the flow path communicates with the discharge port. The coating liquid supplied through the flow path is discharged from the discharge port of the die head.
The coating apparatus includes a backup roll disposed to face the discharge port of the die head. The backup roll conveys the coating object so that the coating object moves relative to the discharge port. The coating apparatus applies the coating liquid to the coating object by moving the coating object relative to the die head while discharging the coating liquid from the die head.

JP 2010-86811 A

However, in the conventional die head, since the shim is composed of a single inelastic member, there is a problem that the shim needs to be slid when forming the discharge port with the shim interposed in the die block. there were. In order to prevent liquid leakage from the die block, it is necessary to precisely adjust the dimensions of the die block and shim according to the shape of the discharge port, and it is necessary to polish the shim when assembling the shim to the die block. It was.
On the other hand, when the shim is interposed in the die block without a gap, there is a problem that it is difficult to move the shim and the width of the discharge port cannot be easily adjusted. On the other hand, when the shim is easily moved, there is a problem that a gap is generated between the die block and the shim, and liquid leakage is likely to occur.
In addition, a configuration in which the shim is not required to be rubbed by configuring the shim as a single elastic member is also conceivable, but the shim of the single elastic member has a problem of poor durability. For example, when adjusting the opening width of the discharge port, if the shim is moved with respect to the die block, the shim may be damaged.

  The present invention has been made in view of such circumstances, and the object thereof is that adjustment of the dimensions of the die block and the shim is unnecessary, the shim interposed in the die block can be easily moved, and the opening width of the discharge port An object of the present invention is to provide a die head capable of adjusting the above.

  The die head according to the present invention has a flat portion, and a plurality of blocks interposed between the flat portions of the block so as to form two blocks opposed to the flat portion and a discharge port for the coating liquid. In a die head that includes a shim and discharges coating liquid from the discharge port, the shim includes a first shim member made of an elastic material and a first elastic member laminated on the first shim member. 2 shim members.

In the present invention, the shim includes a first shim member and a second shim member that are stacked. Since the first shim member is an elastic member, dimensional errors of the block and shim are absorbed. Therefore, shim rubbing is unnecessary. In addition, since the dimensional error is absorbed by the first shim member and the first shim member and the second shim member are in close contact with the flat portion of the block, there is no gap between the block and the shim, and no liquid leakage occurs. .
Further, the second shim member is an inelastic member and has higher durability than the first shim member. Therefore, when adjusting the opening width of the discharge port, the shim is hardly damaged even if the shim is moved.

  In the die head according to the present invention, the first shim member or the second shim member includes a latch portion that latches the first shim member and the second shim member to each other.

  In the present invention, since the first shim member and the second shim member are latched to each other, the entire first shim member and the second shim member can be moved by moving the second shim member. Therefore, by moving the second shim member, which has higher durability than the first shim member, the entire shim can be moved and the opening width of the discharge port can be adjusted.

  The die head according to the present invention includes a feed mechanism that moves the second shim member in a direction in which the opening area of the discharge port changes.

  In the present invention, the feed mechanism moves the second shim member in the direction in which the opening area of the discharge port changes. By moving the second shim member, the entire shim can be moved and the opening width of the discharge port can be adjusted.

  In the die head according to the present invention, the second shim member has a plate shape, and the feed mechanism includes a feed bar that protrudes from the side surface of the second shim member to the outside of the block, and the feed bar is connected to the discharge port. And a screw mechanism for moving back and forth in a direction in which the opening area changes.

  In the present invention, the second shim member can be moved in the direction in which the opening area of the discharge port changes by moving the feed bar provided on the second shim member forward and backward by the screw mechanism. Since the feed screw protrudes to the outside of the block, the opening width of the discharge port can be adjusted without disassembling the block.

  In the die head according to the present invention, the second shim member is in contact with one of the blocks, and the one block and the second shim member have a concave curved surface at the discharge port.

  In the present invention, the coating liquid is discharged from the discharge port while moving the sheet-like workpiece along the concave curved surface of the one block and the second shim member. The liquid can be applied to the workpiece. The shape of the concave curved surface affects the quality of application to the workpiece. Since the second shim member that constitutes a part of the concave curved surface is an inelastic member, the concave curved surface is difficult to deform, and high-quality application is possible. Further, since the second shim member is superior in durability to the first shim member, it is possible to maintain the coating quality.

  According to the present invention, it is not necessary to adjust the dimensions of the die block and the shim, the shim interposed in the die block can be easily moved, and the opening width of the discharge port can be adjusted.

It is a conceptual diagram which shows the example of 1 structure of the coating apparatus which concerns on Embodiment 1. FIG. It is a perspective view which shows one structural example of a die head. It is a disassembled perspective view of a die head. It is a side view of the die head which removed the side wall board. It is a sectional side view of a die head. It is a rear view of a 1st die block. It is a perspective view which shows one structural example of a shim. It is the side view and top view of a shim. It is a rear view of the 1st die block which shows the state where the shim was moved. It is a side view which shows the principal part of the coating apparatus which concerns on Embodiment 2. FIG. 6 is a side view showing a configuration example of a shim according to a second embodiment.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
(Embodiment 1)
FIG. 1 is a conceptual diagram illustrating a configuration example of a coating apparatus according to the first embodiment. The coating apparatus according to the first embodiment is an apparatus that applies a liquid to a sheet-like object A by a die coating method. The object A to be coated is, for example, a band-shaped metal stay. The coating apparatus includes a die head 1 in which a slit-like discharge port 1a for discharging a coating liquid to an object to be coated A is formed, and a discharge port 1a of the die head 1 in a posture in which the rotation axis faces the longitudinal direction of the discharge port 1a. And a backup roll 2 arranged opposite to each other. The backup roll 2 has a cylindrical shape, and the circumferential surface of the backup roll 2 is stretched over so that one surface of the sheet-like workpiece A is opposed to the discharge port 1a of the die head 1. A transport mechanism is configured with a transport roller (not shown). The coating apparatus conveys the workpiece A in the direction of the white arrow by rotating the conveyance roller and the backup roll 2. As the backup roll 2 rotates, the workpiece A moves relative to the discharge port 1 a of the die head 1.

  Hereinafter, the discharge direction of the coating liquid (upward direction in FIG. 1) is the upward direction, the direction opposite to the upward direction (downward direction in FIG. 1) is the downward direction, and the longitudinal direction of the slit-like discharge port 1a (in FIG. 1) The direction perpendicular to the paper surface) is defined as the horizontal direction or the left-right direction, and the thickness direction of the discharge port 1a (the left-right direction in FIG. 1) is defined as the front-back direction. In particular, the direction in which the workpiece A moves in the thickness direction in front of the discharge port 1a (the right direction in FIG. 1) is defined as the rear direction.

  A coating liquid tank 4 is connected to the die head 1 via a pump 3. The coating liquid tank 4 stores a coating liquid to be applied to the workpiece A. The pump 3 is connected to the coating liquid tank 4 and the die head 1 by a supply pipe, and pumps the coating liquid stored in the coating liquid tank 4 to the die head 1. The die head 1 discharges the coating liquid pumped from the pump 3 from the discharge port 1a. The coating apparatus applies the coating liquid to the coating object A by discharging the coating liquid from the die head 1 while moving the coating object A relative to the die head 1. A coating liquid is applied in a strip shape to the workpiece A.

  2 is a perspective view showing a configuration example of the die head 1, FIG. 3 is an exploded perspective view of the die head 1, FIG. 4 is a side view of the die head 1 with the side wall plate 14 removed, and FIG. 5 is a side sectional view of the die head 1. 6 is a rear view of the first die block 11. For convenience of drawing, FIGS. 2 to 6 show the die head 1 in a landscape orientation. The die head 1 has a pentagonal prism shape in which a plate-like portion having a discharge port 1a protrudes from one side to the back roll side. In FIG. 2, a trapezoidal prismatic first die block 11 constituting a front half and a rear side A trapezoidal prismatic second die block 12 constituting a half.

  The first die block 11 has an inverted trapezoidal trapezoidal columnar portion 11a, and a plate-like lip portion 11b protrudes upward from the long side of the trapezoidal columnar portion 11a on the discharge port 1a side. The rear surface of the trapezoidal column portion 11a (the upper surface in FIGS. 2 and 3) and the rear surface of the lip portion 11b are flush with each other and form a flat surface portion 11c. The flat portion 11c has a rectangular shape that is long in the horizontal direction. A flow path 11e for the coating liquid is formed at both ends in the longitudinal direction of the first die block 11, that is, at both ends in the lateral direction, at a substantially central portion in the vertical direction of the rear surface. The channel 11e is a groove having a semicircular shape in a side view. Although the semicircular shape is described as an example of the side view shape of the flow path 11e, it is not particularly limited to the semicircular shape, and is a groove having a drop shape, a trapezoidal shape, or other shapes in the side view. Also good. The first die block 11 has a sealing block portion 11d for sealing the lower side of the die head 1 below the flow path 11e. The rear surface of the sealing block part 11d is a plane substantially parallel to the flat part 11c, and the sealing block part 11d has a thickness corresponding to the width in the front-rear direction of the discharge port 1a. In other words, the thickness of the lower part of the first die block 11 in the front-rear direction is thicker than that of the upper part.

  The second die block 12 has a trapezoidal column part 12a having a trapezoidal shape in side view, and a plate-like lip part 12b protrudes upward from the long side of the trapezoidal column part 12a on the discharge port 1a side. The front surface of the trapezoidal column portion 12a (the lower surface in FIGS. 2 and 3) and the front surface of the lip portion 12b are flush with each other and form a flat surface portion 12c. The flat surface portion 12c has a rectangular shape that is long in the horizontal direction.

  The first and second die blocks 11 and 12 have substantially the same shape in a plan view, and are coupled so that the planar portion 11c and the planar portion 12c face each other. The first die block 11 and the second die block 12 are fastened by, for example, bolts.

  Shims 13 are interposed at both ends in the lateral direction so that the discharge port 1a for the coating liquid is formed between the flat portion 11c of the first die block 11 and the flat portion 12c of the second die block 12. ing. The shim 13 has a plate-like rectangular parallelepiped shape, and is arranged so that the surface on the short side is flush with the surfaces on the upper side of the lip portions 11b and 12b. The first and second die blocks 11 and 12 and the two shims 13 form a coating liquid discharge port 1a.

  Further, between the flat surface portion 11c of the first die block 11 and the flat surface portion 12c of the second die block 12, the gap between the first and second die blocks 11 and 12 and the flow path 11e are formed at both lateral ends. A sealing plate 15 for sealing is interposed. As shown in FIG. 4, the sealing plate 15 has substantially the same thickness as the gap between the first and second die blocks 11, 12 and is disposed below the shim 13. The sealing plate 15 has a length in the vertical direction from the lower surface of the shim 13 to the lower end of the flow path 11e, and has a shape that follows the side surface shape of the flow path 11e in the lower part.

  As shown in FIGS. 1 and 3, the die head 1 includes side wall plates 14 fixed to both lateral sides of the first and second die blocks 11 and 12. The side wall plate 14 has a substantially pentagonal shape that is the same shape as the first die head 1 and the second die head 1 coupled to each other in the front-rear direction, and is fastened to the first die head 1 and the second die head 1 by bolts or the like (not shown). Yes.

  The flow channel 11e communicates with the space between the first and second die blocks 11 and 12 and the discharge port 1a, and the coating liquid supplied from the pump 3 to the flow channel 11e flows through the space, and the discharge port. 1a is discharged onto the workpiece A.

  The die head 1 also includes a feed mechanism 16 that changes the opening width of the discharge port 1a by moving the shim 13 in the lateral direction. The feeding mechanism 16 is provided for each of the two shims 13. The feed mechanism 16 includes a feed bar 16a that protrudes laterally outward from the side surface of the shim 13, and a screw mechanism 16b that advances and retracts the feed bar 16a in a direction in which the opening area of the discharge port 1a changes. Details of the feed mechanism 16 will be described later.

  FIG. 7 is a perspective view showing a configuration example of the shim 13, and FIG. 8 is a side view and a plan view of the shim 13. 8A is a side view and FIG. 8B is a plan view. 7 and 8, for convenience of explanation, the feed bar 16a provided on the shim 13 is omitted. The shim 13 includes a substantially plate-like first shim member 13a made of an elastic material, and a plate-like second shim member 13b made of an inelastic member laminated on the first shim member 13a. The first shim member 13a is, for example, a resin such as polyethylene foam that does not transmit the coating liquid, and the second shim member 13b is a metal such as gun metal or copper alloy. The foamed polyethylene is an example of a member constituting the first shim member 13a, and is particularly limited as long as the material has solvent resistance to the coating liquid and can slide in contact with the flat surface portion 11c. It is not something. Further, the gun metal and the copper alloy are also examples of members constituting the second shim member 13b, and are not particularly limited as long as they are inelastic members having higher durability than the first shim member 13a. For example, the second shim member 13b may be formed of resin. The shim 13 is formed between the first and second die blocks 11 and 12 so that the first shim member 13a and the second shim member 13b that are stacked are on the first die block 11 side and the second die block 12 side, respectively. It is intervened.

  The first shim member 13a or the second shim member 13b includes a latching portion that latches the first shim member 13a and the second shim member 13b. Specifically, the first shim member 13a has a convex portion 13c on the second shim member 13b side, and the second shim member 13b has a concave portion 13d fitted to the convex portion 13c of the first shim member 13a. The latching portion is constituted by a convex portion 13c of the first shim member 13a and a concave portion 13d of the second shim member 13b. The convex part 13c which the 1st shim member 13a has has the shape which protruded in plate shape over the up-down direction both ends, and the 2nd shim member 13b has the concave-shaped part corresponding to the convex part 13c over the up-down direction both ends. . The joint surfaces of the first shim member 13a and the second shim member 13b are bonded with an adhesive that is not applied to the coating liquid. Moreover, the structure which the 1st shim member 13a and the 2nd shim member 13b fit may be provided, and the 1st shim member 13a and the 2nd shim member 13b may be couple | bonded by fitting.

  As shown in FIG. 3, the feed bar 16a of the feed mechanism 16 protrudes laterally outward from the laterally outer side surface of the second shim member 13b. There are two feed rods 16a, for example, and each feed rod 16a protrudes from the upper and lower side surfaces of the second shim member 13b. The side wall plate 14 has an insertion hole through which the feed bar 16a is inserted. As shown in FIG. 2, the feed bar 16a protruding from the second shim member 13b passes through the insertion hole and protrudes to the outside of the die head 1. Yes.

  A male screw is formed at the laterally outer end of the feed bar 16a. The screw mechanism 16b has a female screw that is screwed into the male screw of the feed rod 16a. The female screw is supported so as to rotate without moving laterally relative to the die head 1, and the user of the coating apparatus and the die head 1 moves the feed bar 16a back and forth by rotating the female screw. Can do.

  FIG. 9 is a rear view of the first die block 11 showing a state where the shim 13 is moved. As shown in FIGS. 6 and 9, the user of the coating apparatus and the die head 1 can move the second shim member 13b in the lateral direction using the screw mechanism 16b. The first shim member 13a and the second shim member 13b are hooked together by the convex portion 13c and the concave portion 13d, and are integrated with each other, so that the entire shim 13 is moved by moving the second shim member 13b by the feed bar 16a. It can be moved laterally. That is, the user can adjust the horizontal width of the discharge port 1a by moving the shim 13 in the horizontal direction.

According to the die head 1 of the first embodiment configured as described above, since the first shim member 13a is an elastic member, the dimensional errors of the first and second die blocks 11, 12 and the shim 13 are absorbed. Therefore, the shim 13 need not be rubbed together. Further, the dimensional error is absorbed by the first shim member 13 a, and the first shim member 13 a and the second shim member 13 b are in close contact with the planar portions 11 c and 12 c of the first and second die blocks 11 and 12.
Therefore, a gap does not occur between the first and second die blocks 11, 12 and the shim 13, and no liquid leakage occurs.
Therefore, the shim 13 can be easily interposed between the first and second die blocks 11 and 12 so that the coating liquid does not leak without the shim 13 being rubbed together.

Further, since the second shim member 13b is an inelastic member and has high durability, the shim 13 is not easily damaged even if the shim 13 is moved when adjusting the opening width of the discharge port 1a. Accordingly, the shim 13 interposed between the first and second die blocks 11 and 12 can be easily moved without damage, and the opening width of the discharge port 1a can be adjusted.
The structure of the shim 13 is the first shim member 13a made of an elastic material on the upstream side and the second shim member 13b made of an inelastic member on the downstream side with respect to the traveling direction of the workpiece A. The opening width of the discharge port 1 a that discharges the coating liquid is determined by the second shim member 13 b that is an inelastic member provided at both ends of the die 13. Since the coating liquid is discharged from the discharge port 1a having the opening width determined in this way, the coating liquid can be applied with a target dimension width with high accuracy.

  Furthermore, since the first shim member 13a and the second shim member 13b are hooked to each other, the entire shim 13 can be moved by moving the second shim member 13b. Since the first shim member 13a constituting the shim 13 interposed in the slit-shaped discharge port 1a has appropriate elasticity, the shim 13 can be easily moved. Therefore, by moving the second shim member 13b having high durability, the entire shim 13 can be moved and the opening width of the discharge port 1a can be adjusted.

  Furthermore, the first shim member 13a and the second shim member 13b can be latched with each other with a simple structure by fitting the convex portion 13c of the first shim member 13a into the concave portion 13d of the second shim member 13b. it can.

  Furthermore, by moving the second shim member 13b in the lateral direction by the feed mechanism 16, the entire shim 13 can be moved and the opening width of the discharge port 1a can be adjusted.

  In the present invention, the feed bar 16a provided on the second shim member 13b is advanced and retracted by the screw mechanism 16b, thereby moving the second shim member 13b in the lateral direction and adjusting the opening width of the discharge port 1a. be able to. Since the feed screw 16a protrudes outside the die head 1, the opening width of the discharge port 1a can be adjusted without disassembling the die head 1.

  In the first embodiment, the example in which the male screw is formed at the laterally outer end portion of the feed rod has been described, but the above-described configuration is an example of the feed screw mechanism. For example, a male screw may be formed on the shim-side tip of the feed rod, and a female screw that engages with the male screw of the feed rod may be formed on the second shim member. The feed rod is supported so as to rotate without moving laterally with respect to the die head 1, and the user of the coating apparatus and the die head 1 moves the feed rod back and forth by rotating the feed rod. .

  In the first embodiment, the example in which the convex portion and the concave portion are formed in the first shim member and the second shim member, respectively, has been described, but the concave and convex portions may be provided in reverse. That is, a concave portion may be formed on the first shim member and a convex portion may be formed on the second shim member. Further, a latching portion may be provided on one of the first shim member and the second shim member. For example, the first shim member of the elastic member may be formed in a flat plate shape, and the latching portion may be provided on the surface of the second shim member on the first shim member side. For example, the latching portion may be configured by an unevenness that deforms the plane of the first shim member or a protrusion that pierces the plane.

  Furthermore, although the screw mechanism is illustrated as the mechanism for moving the shim, the type of the drive mechanism is not particularly limited as long as the entire shim can be moved in the lateral direction by moving the second shim member in the lateral direction. For example, the shim may be moved by a gear mechanism, a clamp mechanism, or other moving mechanisms. Further, the power for moving the shim may be manual, or a power source such as a motor may be used. Moreover, it is also possible not to provide a feed mechanism and to move the shim manually during die assembly to adjust the opening width of the discharge port 1a.

  Furthermore, in the first embodiment, an example in which two shims are interposed between the first and second die blocks has been described. However, a configuration in which a plurality of discharge holes are formed by interposing three or more shims. You may do it.

(Embodiment 2)
Since the coating apparatus according to the second embodiment differs from the first embodiment in the shapes of shims and lip portions, the differences will be mainly described below. Since other configurations and operational effects are the same as those of the first embodiment, the corresponding portions are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 10 is a side view showing the main part of the coating apparatus according to the second embodiment, and FIG. 11 is a side view showing one configuration example of the shim 213 according to the second embodiment. The lip portion 212b disposed on the rear side in FIG. 10 has a rectangular plate shape that is long in the horizontal direction, as in the first embodiment. The lip portion 212b has a wedge-shaped protrusion that protrudes obliquely upward from the upper part in the side view. The lip portion 212b has a tapered surface at the upper front portion in a side view. The lip portion 212b has a concave lip curved surface 212e following the peripheral surface of the backup roll 2 on the upper end surface.

As in the first embodiment, the shim 213 is a plate-shaped second shim formed of a substantially plate-shaped first shim member 213a made of an elastic material and an inelastic member laminated on the first shim member 213a. And a member 213b. The material constituting the first shim member 213a and the second shim member 213b is the same as that of the first embodiment. The second shim member 213b disposed on the rear side in FIG. 10 has a plate-like shape, and has a wedge-shaped protrusion that protrudes obliquely upward from the upper rear portion in a side view so as to follow the front surface of the lip portion 212b. The second shim member 213b has tapered surfaces on the upper front portion and the lower front portion in a side view. The second shim member 213b is in contact with the flat surface portion 212c of the lip portion 212b, and the second shim member 213b is connected to the lip curved surface 212e and has a shim curved surface 213e that follows the peripheral surface of the backup roll 2. The lip curved surface 212e of the lip portion 212b and the shim curved surface 213e of the second shim member 213b are continuously connected to form a concave curved surface 201b that follows the circumferential surface of the backup roll 2. The curvature of the concave curved surface 201b has the same curvature as that of the peripheral surface of the backup roll 2.
The first shim member 213a has a plate shape, has a shape following the front surface and the protrusion of the second shim member 213b, and is bonded to the second shim member 213b. Specifically, the first shim member 213a has a flat plate portion, and an upper bent portion and a lower bent portion bent along the taper of the second shim member 213b.

  The lip portion 211b arranged on the front side in FIG. 10 includes a flat portion 211c that contacts the flat plate portion of the first shim member 213a and a fixing member 211f that contacts the upper bent portion of the first shim member 213a and fixes the shim 213. With. The fixing member 211f is fastened to the flat portion 211c with a bolt and can be attached and detached. The upper end portion of the shim 213, that is, the protrusion of the first shim member 213a and the upper bent portion of the second shim member 213b are arranged on the tapered surface of the lip portion 212b arranged on the rear side in FIG. 10 and on the front side in FIG. The second shim member 213b and the lip 212b are accurately held in the shape of the concave curved surface 201b by being held by the fixed member 211f of the lip 212b.

  According to the die head 1 of the second embodiment, the sheet-like workpiece A is formed along the concave curved surface 201b formed on the rear side of the discharge port 1a, that is, on the downstream side in the transport direction of the workpiece A. The coating liquid B can be applied to the article A to be coated by discharging the coating liquid B from the discharge port 1a while moving.

Further, the shape of the concave curved surface 201b affects the quality of application to the workpiece A, and the second shim member 213b constituting the concave curved surface 201b is an inelastic member such as metal, so it is difficult to deform. High quality application is possible. The second shim member 213b formed of metal such as gun metal has a small thermal expansion and thermal contraction, and can maintain a stable coating quality.
Further, the second shim member 213b is excellent in durability, and the tip end portion is not torn, melted or torn, and the coating quality can be maintained.

  The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Die head 1a Discharge port 2 Backup roll 3 Pump 4 Coating liquid tank 11 1st die block 12 2nd die block 11a, 12a Trapezoid pillar part 11b, 12b, 211b, 212b Lip part 11c, 12c, 211c, 212c Plane part 11d Sealing Stop block portion 11e Flow path 13 Shim 13a First shim member 13b Second shim member 13c Convex portion 13d Concavity 14 Side wall plate 15 Sealing plate 16 Feed mechanism 16a Feed rod 16b Screw mechanism 201b Concave curved surface 212e Lip curved surface 213e Shim curved Surface A Workpiece

Claims (5)

Two blocks having a flat surface portion and opposed to each other, and a plurality of shims interposed between the flat surface portions of the block so as to form a discharge port for coating liquid, and move In a die head that discharges a coating liquid from the discharge port to a sheet-like workpiece ,
The shim is
A first shim member made of an elastic material capable of sliding in contact with the planar portion ;
A second shim member composed of an inelastic member laminated on the first shim member ,
The shim has a two-layer configuration of the first shim member and the second shim member, and the first shim member is arranged on the upstream side with respect to the traveling direction of the object to be coated, and the first shim member is on the downstream side. 2 shim members are arranged
Da Iheddo. The first shim member or the second shim member is
The die head according to claim 1, further comprising a latch portion that latches the first shim member and the second shim member with each other. The die head according to claim 1, further comprising a feed mechanism that moves the second shim member in a direction in which the opening area of the discharge port changes. The second shim member has a plate shape,
The feeding mechanism is
A feed bar protruding from the side surface of the second shim member to the outside of the block;
The die head according to claim 3, further comprising: a screw mechanism that advances and retracts the feed bar in a direction in which the opening area of the discharge port changes. The second shim member is in contact with one of the blocks;
The one block and the second shim member are
The die head according to any one of claims 1 to 4, wherein the discharge port has a concave curved surface.

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