KR20220011713A - die head - Google Patents

Abstract

The die head includes a pedestal block and a distal end block detachably provided with respect to the pedestal block, the die head discharging a coating liquid from the distal end of the distal end block, wherein the distal end block is a first fastening surface in contact with the pedestal block, respectively and bolts on each of the second fastening surfaces to the pedestal block.

Description

die head

The present disclosure relates to a die head.

Conventionally, in the case of manufacturing a highly functional laminated film by applying a coating liquid to a web, an extrusion-type die head capable of uniform thin film coating is used. As a technique related to a die head in which a distal end block from which a coating liquid is discharged and a pedestal block serving as a pedestal for the distal end block are separable, the following techniques are known.

For example, in Japanese Patent Application Laid-Open No. 2006-212511 (hereinafter referred to as "Document 1"), a head member in which a recessed portion retracted by one step is formed on the tip side of the side surface, and a blade attached to the recessed portion, , an application tool in which a blade is press-fitted by a clamp screw press-fitted from the tip side of the head member to the side in the retraction direction where the recess is retracted with respect to the side surface and to the rear end side of the head member. According to the application tool according to Document 1, it is described that a gap can be prevented from being formed on the side surface of the head member that partitions the slot through which the coating liquid flows.

On the other hand, in Japanese Unexamined Patent Publication No. 10-5659, in a die head in which the tip end of the die head is fixed to the die head body with bolts, the junction between the die head tip and the die head body is symmetrical with respect to the center line of the bolt. Also, there is described a die head characterized in that it has two joining surfaces whose angle with respect to the center line is an acute angle and does not have a portion in contact with a point.

However, the tip block is required to be able to be reattached after being removed from the pedestal block in order to deteriorate the edge due to pigments in the coating liquid, damage to the edge, change to a blade having a different shape, and the like.

However, according to the application tool according to Document 1, the blade is mounted by pressing on the rear end side of the head member with a clamp screw press-fitted from the front end side of the head member. Accordingly, stress is generated on two surfaces of the surface where the head member and the blade are in contact: a surface on the tip side to which the clamp screw is press-fitted, and a surface on the rear end side of the head member. In this case, the blade and the head member may be deformed due to residual stress even after the blade is separated from the head member. If at least one of the blade and the head member is deformed, after the blade is removed from the head member, it becomes difficult to mount the blade to the head member again with high accuracy. That is, there is a fear that the state of the application tool changes before and after separation of the blade. When the state of an application tool changes, coating precision will fall and it will become difficult to form the coating film which has a desired film thickness. Therefore, according to the application tool described in Document 1, it is difficult to reuse the blade removed from the head member.

The present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide a die head capable of avoiding deformation of a pedestal block and a front end block.

The die head of the present disclosure is a die head including a pedestal block and a distal end block detachably provided with respect to the pedestal block, the die head discharging a coating liquid from the distal end of the distal end block, wherein the distal end block is a first block in contact with the pedestal block, respectively. Each of the first fastening surface and the second fastening surface is fastened to the pedestal block with bolts.

In the die head of the present disclosure, all surfaces other than the first fastening surface and the second fastening surface of the front end block may be non-contact with the pedestal block.

Further, in the die head of the present disclosure, the front end block is fastened to the pedestal block by a first bolt having an axis perpendicular to the first fastening surface on the first fastening surface, and on the second fastening surface, the second It may be fastened to the pedestal block by a second bolt having an axis perpendicular to the fastening surface.

Moreover, in the die head of this indication, the angle formed between a 1st fastening surface and a 2nd fastening surface may be 90 degrees or more and 120 degrees or less.

Further, in the die head of the present disclosure, the angle between the first fastening surface and the second fastening surface may be 90°.

Moreover, in the die head of this indication, the ratio P1/P2 of the surface pressure P1 in the 1st fastening surface and the surface pressure P2 in the 2nd fastening surface may be 3/7 or more and 7/3 or less.

Moreover, in the die head of this indication, the surface pressure P1 in the 1st fastening surface and the surface pressure P2 in the 2nd fastening surface may be the same.

Further, in the die head of the present disclosure, the front end block is a pedestal block by means of a plurality of first bolts arranged along the longitudinal direction parallel to both of the first fastening surface and the second fastening surface on the first fastening surface. is fastened to the pedestal block and is fastened to the pedestal block by a plurality of second bolts arranged along the longitudinal direction on the second fastening surface, and the ratio N1/N2 of the number N1 of the first bolt to the number N2 of the second bolt A, 3/7 or more and 7/3 or less may be sufficient.

In the die head of the present disclosure, the number N1 of the first bolts and the number N2 of the second bolts may be the same.

Moreover, in the die head of this indication, the 1st bolt and the 2nd bolt may be arrange|positioned in such a manner that the same number appears repeatedly along the longitudinal direction.

Moreover, in the die head of this indication, the 1st bolt and the 2nd bolt may be alternately arrange|positioned along the longitudinal direction.

Moreover, in the die head of this indication, two front-end|tip blocks are arrange|positioned in the attitude|position parallel to mutual longitudinal direction, and may have a slit through which a coating liquid is discharged between two front-end|tip blocks.

According to the present disclosure, deformation of the front end block and the pedestal block can be avoided.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows an example of the structure of the application|coating apparatus using a die head.
It is a perspective view of the die head which concerns on embodiment.
It is an exploded perspective view of the die head which concerns on embodiment.
It is a top view of the die head which concerns on embodiment.
5 is a cross-sectional view of the die head according to the embodiment.
6 is a cross-sectional view taken along line AA of FIG. 5 .
7 is a cross-sectional view taken along line BB of FIG. 5 .
8 is a cross-sectional view of a die head according to Modification 1-1.
9 is a cross-sectional view of a die head according to Modification 1-1.
10 is a cross-sectional view of a die head according to Modification Example 1-2.
11 is a top view showing an arrangement of bolts of a die head according to Modification Example 2-1.
12 is a top view showing an arrangement of bolts of a die head according to Modification Example 2-2.
Fig. 13 is a top view showing the arrangement of bolts of the die head according to Modification Example 2-3;
14 is a top view showing the arrangement of bolts of the die head according to Modification Example 2-4.
Fig. 15 is a top view of the die head according to the embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to drawings, the form example for implementing the technique of this indication is demonstrated in detail.

First, with reference to FIG. 1, an example of the structure of the application|coating apparatus 90 using the die head 80 which concerns on this embodiment is demonstrated. As shown in FIG. 1 , the coating device 90 includes a tank 92 that stores a coating liquid, a liquid feed pump 94 , a die head 80 , and a backup roller 96 . According to the coating apparatus 90 which concerns on this embodiment, the liquid feeding pump 94 liquid-feeds the coating liquid in the tank 92 to the die head 80, is supported by the backup roller 96, and the web 98 which travels continuously ), a coating layer is formed on the web 98 by discharging and applying the coating liquid by the die head 80 .

Next, with reference to FIG.2 and FIG.3, the structure of the die head 80 which concerns on this embodiment is demonstrated. 3 is a perspective view in which the die head 80 according to the present embodiment shown in FIG. 2 is disassembled for each member.

As shown in FIG. 2 , the die head 80 includes a pedestal block 10 and a distal end block 20 detachably provided with respect to the pedestal block 10 , and is applied from the distal end of the distal end block 20 . discharge the liquid Further, the die head 80 in which the pedestal block 10 and the distal end block 20 are integrated is formed so as to have a tapered shape toward the distal end for discharging the coating liquid, and the face 18 of the pedestal block 10 and The surface 28 of the front end block 20 is formed so as to be one surface without a step difference. Moreover, the pedestal block 10 and the front-end|tip block 20 are formed from the elongate block which makes the application width direction parallel to the rotation axis of the backup roller 96 a long longitudinal direction.

As shown in Figs. 2 and 3 , the die head 80 is two pedestal blocks 10 (hereinafter, when distinguishing from each other, pedestal block) arranged to face each other in a posture parallel to the longitudinal direction of each other. (referred to as 10A, 10B)) is included. Each of the surfaces 12A and 12B on which the two pedestal blocks 10A and 10B face each other is a pocket 82 that is a space for storing the coating liquid, and a flow path of the coating liquid from the pocket 82 to the web 98 . It is formed so that the slit 84 may be comprised. That is, by arranging the two pedestal blocks 10A and 10B so that the faces 12A and 12B face each other, the pocket 82 and the slit 84 are located between the two pedestal blocks 10A and 10B. this is formed

Moreover, the die head 80 is two front-end|tip blocks 20 (Hereinafter, when mutually distinguishing, it is called front-end|tip block 20A, 20B) arrange|positioned to each other in the attitude|position parallel to the longitudinal direction. is comprised of The respective surfaces 22A and 22B on which the two tip blocks 20A and 20B oppose are formed so as to constitute a slit 84 . That is, the slit 84 is formed between the two tip blocks 20A and 20B by arranging the two tip blocks 20A and 20B so that the surfaces 22A and 22B face each other.

The pocket 82 has a substantially circular shape as shown in FIG. 2 as an example in the shape of the cross section orthogonal to the longitudinal direction of the die head 80. As shown in FIG. In addition, the pocket 82 should just be a shape in which the function as a space which stores a coating liquid can be acquired, for example, the semicircular shape etc. formed in either one of the two pedestal blocks 10 may be sufficient.

The slit 84 has a surface formed from the pocket 82 of the surface 12A on the tip side and the surface 22A as one surface without a step difference, and a surface on the tip side from the pocket 82 of the surface 12B. And the surface 22B is formed by arranging the surfaces formed as a single surface spaced apart from each other without a step difference.

As shown in FIG. 3 , the pedestal block 10 has a concave portion 15 defined at the distal end by two surfaces 14 and 16 in order to provide the distal end block 20 in a detachable manner. has The distal end block 20 has a first fastening surface 24 and a second fastening surface in contact with each of the two surfaces 14 and 16 of the pedestal block 10 so as to be accommodated in the recess 15 thereof. has a face 26 . The first fastening surface 24 is, as an example, a surface perpendicular to the surfaces 22A and 22B where the two tip blocks 20 oppose, and the second fastening surface 26 is, as an example, two tip blocks. (20) is a plane parallel to the opposing surfaces 22A, 22B. That is, the angle between the first fastening surface 24 and the second fastening surface 26 is, for example, 90°.

In addition, the difference between the angle between the face 14 and the face 16 of the pedestal block 10 and the angle between the first fastening face 24 and the second fastening face 26 of the tip block 20 is ±0.1 It is preferable to be within °. By setting it as such a structure, since the clearance gap in the contact surface of the pedestal block 10 and the front-end|tip block 20 can be made small, when the front-end|tip block 20 is attached/detached to the pedestal block 10, the pedestal block 10 ) and deformation of the front end block 20 can be suppressed.

The pedestal block 10 and the front end block 20 are respectively formed with bolt holes 32 and 34 through which a first bolt 30, which will be described in detail later, is inserted. When the pedestal block 10 is positioned at a regular position with respect to the tip block 20, the bolt hole 32 and the bolt hole 34 are arranged so that they are continuous. Further, in the pedestal block 10 and the front end block 20, bolt holes 42 and 44 into which a second bolt 40, which will be described in detail later, is inserted, are respectively formed. When the pedestal block 10 is positioned at a regular position with respect to the front end block 20, the bolt hole 42 and the bolt hole 44 are arranged so that they are continuous. The first bolt 30 and the second bolt 40 have threads formed in a spiral shape, and the wall surfaces of the bolt holes 32 , 34 , 42 and 44 have the first bolt 30 and the second bolt 40 . ), a screw groove for screwing is formed.

Next, with reference to FIGS. 4-7, the detailed structure of the pedestal block 10 and the front-end|tip block 20 which concern on this embodiment is demonstrated. FIG. 4 is a top view of the die head 80 shown in FIG. 2 . 5 : is sectional drawing of the surface orthogonal to the longitudinal direction of the die head 80 shown in FIG. Fig. 6 is a cross-sectional view taken along line A-A shown in Fig. 5 . Fig. 7 is a cross-sectional view taken along line B-B shown in Fig. 5 .

As shown in FIG. 5, the front-end|tip block 20 is a bolt (1st bolt 30) in each of the 1st fastening surface 24 and the 2nd fastening surface 26 which contact the pedestal block 10, respectively. and the second bolt 40 ) is fastened to the pedestal block 10 . Here, "fastening" means in a state in which two members are in contact, using a bolt passing through the contact surface of each member, in a direction in which the contact surfaces of each member are pressed into contact with each other by the action of the screw of the bolt. By tightening, the two members are fixed. That is, the front-end|tip block 20 is press-contacted and closely_contact|adhered to the pedestal block 10 in two surfaces of the 1st fastening surface 24 and the 2nd fastening surface 26. As shown in FIG.

Moreover, as shown in FIG. 5, as for the front-end|tip block 20, it is preferable that all surfaces other than the 1st fastening surface 24 and the 2nd fastening surface 26 are non-contact with respect to the pedestal block 10. As shown in FIG. Here, "non-contact" is not limited to the case where it is not in complete contact, and after the distal end block 20 is separated from the pedestal block 10, the pedestal block 10 and the distal end block 20 are caused by residual stress. This includes the case of contact with the surface pressure applied to the extent that this deformation does not occur.

Moreover, as shown in FIG. 5, the front-end|tip block 20 in the 1st fastening surface 24 is a base block ( 10) and, in the second fastening surface 26, is preferably fastened to the pedestal block 10 by a second bolt 40 having an axis perpendicular to the second fastening surface 26. Here, "vertical" is not limited to 90 degrees, What is necessary is just an appropriate angle which can transmit an axial force efficiently. For example, if it is about 90°±0.5°, the axial force of the bolt can be used as the surface pressure and can be transmitted without waste.

In a state where the first fastening surface 24 of the front end block 20 and the surface 14 of the pedestal block 10 are in contact, these surfaces are joined by using the first bolt 30 penetrating these surfaces. By doing so, by the action of the screw of the 1st bolt 30, these surfaces are tightened in the direction in which they press-contact. Similarly, in a state in which the second fastening surface 26 of the front end block 20 and the surface 16 of the pedestal block 10 are in contact, using the second bolt 40 penetrating these surfaces, these By joining the surfaces, they are tightened in the direction in which these surfaces are pressed against each other by the action of the screw of the second bolt 40 . Thereby, in the two surfaces of the 1st fastening surface 24 and the 2nd fastening surface 26, the front-end|tip block 20 is press-contacted and closely_contact|adhered to the pedestal block 10. As shown in FIG.

4 to 7 , the front end block 20 is formed by a plurality of first bolts 30 arranged along the longitudinal direction of the die head 80 on the first fastening surface 24 . It is fastened to the pedestal block 10 and is fastened to the pedestal block 10 by a plurality of second bolts 40 arranged along the long longitudinal direction of the die head 80 on the second fastening surface 26 . . 4, 6, and 7, the plurality of first bolts 30 and the plurality of second bolts 40 are arranged so as not to overlap each other along the longitudinal direction.

In this case, it is preferable to make the surface pressure P1 in the 1st fastening surface 24 and the surface pressure P2 in the 2nd fastening surface 26 become the same. Therefore, as shown in FIG.4, FIG.6, and FIG.7, the used number N1 of the 1st bolt 30 and the used number N2 of the 2nd bolt 40 are the same, and the 1st bolt 30 and the The two bolts 40 are preferably alternately arranged along the longitudinal direction of the die head 80 . Moreover, it is preferable that the some 1st bolt 30 and the some 2nd bolt 40 are respectively arrange|positioned at equal intervals.

Further, as shown in FIGS. 4 to 7 , the front end block 20 is parallel to the surface 22 forming the slit 84 , and is arranged along the longitudinal direction of the die head 80 . A plurality of second fastened to the pedestal block 10 by the first bolt 30 , perpendicular to the surface 22 forming the slit 84 , and arranged along the long longitudinal direction of the die head 80 . It is preferably fastened to the pedestal block 10 by means of bolts 40 . With such a configuration, it is possible to suppress distortion and step difference of the slit 84 .

As described above, the front end block 20 according to the present embodiment is fastened to the pedestal block 10 by the same surface pressure on the two surfaces of the first fastening surface 24 and the second fastening surface 26 . do. Thereby, according to the die head 80 which concerns on this embodiment, the surface pressure can be disperse|distributed equally in the two surfaces of the 1st fastening surface 24 and the 2nd fastening surface 26. As shown in FIG. Therefore, it is possible to avoid deformation of the pedestal block 10 and the front end block 20 due to residual stress after the distal end block 20 is separated from the pedestal block 10 . In other words, it is possible to suppress a change in the state of the die head 80 before and after the distal end block 20 is separated. Therefore, according to the die head 80 which concerns on this embodiment, the front-end|tip block 20 separated from the pedestal block 10 can be reused.

Moreover, according to the die head 80 which concerns on this embodiment, the 1st fastening of the front-end|tip block 20 to the recessed part 15 defined by the two surfaces 14 and 16 provided in the pedestal block 10. The face 24 and the second fastening face 26 are accommodated together. Accordingly, alignment when the tip block 20 is fastened to the pedestal block 10 can be easily and accurately performed. That is, the tip block 20 can be mounted to the pedestal block 10 with high precision.

Next, with reference to FIGS. 8-10, the modification with respect to the structure of the die head 80 which concerns on the said embodiment is demonstrated.

[Modified Example 1-1]

With reference to FIG.8 and FIG.9, the modification 1-1 of the die head 80 which concerns on the said embodiment is demonstrated. After the front end block 20 according to the above embodiment is separated from the pedestal block 10 in addition to the first fastening surface 24 and the second fastening surface 26, the pedestal is formed by residual stress. The block 10 and the front end block 20 may have a contact surface 29 which contacts the pedestal block 10 in a state in which the surface pressure to the extent that it does not deform|transform is applied.

For example, as shown in FIG. 8, the front-end|tip block 20 may have the contact surface 29 between the surface 22 and the 1st fastening surface 24. As shown in FIG. Moreover, as shown in FIG. 9, you may have the contact surface 29 between the 1st fastening surface 24 and the 2nd fastening surface 26, for example.

Moreover, for example, in the case shown in FIG. 8, the front-end|tip block 20 does not contact the pedestal block 10 in the contact surface 29, but between the pedestal block 10 and the front-end|tip block 20. When a gap is generated, the coating liquid enters the gap, and it becomes difficult to accurately discharge the coating liquid. In order to increase the accuracy of discharging the coating liquid while suppressing deformation of the pedestal block 10 and the tip block 20, as shown in FIG. 5 , the tip block 20 has a first fastening surface 24 and a second fastening. It is preferable that all surfaces other than the surface 26 are non-contact with respect to the pedestal block 10 .

[Modification 1-2]

With reference to FIG. 10, the modification 1-2 of the die head 80 which concerns on the said embodiment is demonstrated. In the above embodiment, the angle θ between the first fastening surface 24 and the second fastening surface 26 may be larger than 90°, as shown in FIG. 10 . The angle θ between the first fastening surface 24 and the second fastening surface 26 may be, for example, 90° or more and 120° or less.

Next, with reference to FIGS. 11-14, the modified example of the bolt arrangement|sequence of the die head 80 which concerns on the said embodiment is demonstrated. 11 to 14 , the first bolt 30 is inserted into the bolt hole 34 , and the second bolt 40 is inserted into the bolt hole 42 . The arrangement of bolts in the above embodiment is as shown in Fig. 4, the arrangement of bolts in the pedestal block 10A and the tip block 20A, and the arrangement of the bolts in the pedestal block 10B and the tip block 20B. The arrangement of the bolts was symmetrical. Moreover, the 1st bolt 30 and the 2nd bolt 40 were alternately arrange|positioned along the longitudinal direction of the die head 80. As shown in FIG. Moreover, the number N1 of the 1st bolts 30 and the number N2 of the 2nd bolts 40 were the same. Moreover, the surface pressure P1 in the 1st fastening surface 24 and the surface pressure P2 in the 2nd fastening surface 26 were the same thing.

[Modified Example 2-1]

With reference to FIG. 11, the modification 2-1 with respect to the arrangement|positioning of the bolts of the die head 80 which concerns on the said embodiment is demonstrated. In the above embodiment, the arrangement of bolts in the pedestal block 10A and the tip block 20A and the arrangement of the bolts in the pedestal block 10B and the tip block 20B may be asymmetric. For example, as shown in FIG. 11 , the arrangement of bolts in the pedestal block 10A and the tip block 20A and the bolt arrangement in the pedestal block 10B and the tip block 20B are left-right asymmetrical. may be

[Modified Example 2-2]

With reference to FIG. 12, the modification 2-2 with respect to the bolt arrangement|sequence of the die head 80 which concerns on the said embodiment is demonstrated. In the said embodiment, the 1st bolt 30 and the 2nd bolt 40 may be arrange|positioned in the aspect which appears repeatedly by the same number respectively along the longitudinal direction. For example, as shown in FIG. 12, the 1st bolt 30 and the 2nd bolt 40 may be arrange|positioned in the aspect which appears repeatedly 2 by each along the longitudinal direction of the die head 80.

[Modified Example 2-3]

With reference to FIG. 13, the modification 2-3 with respect to the bolt arrangement|sequence of the die head 80 which concerns on the said embodiment is demonstrated. In the said embodiment, if the surface pressure P1 in the whole of the 1st fastening surface 24 and the surface pressure P2 in the whole of the 2nd fastening surface 26 are the same, the 1st longitudinal direction of the die head 80 is the same. The arrangement of the bolt 30 and the second bolt 40 may be biased. For example, as shown in FIG. 13 , a plurality of first bolts 30 are arranged in the central portion of the die head 80 in the longitudinal direction, and a plurality of second bolts 40 are mounted on the die head 80 . The aspect arrange|positioned at the both ends of a long longitudinal direction may be sufficient.

[Modified Example 2-4]

With reference to FIG. 14, the modification 2-4 with respect to the bolt arrangement|sequence of the die head 80 which concerns on the said embodiment is demonstrated. In the said embodiment, even if ratio P1/P2 of the surface pressure P1 in the 1st fastening surface 24 whole and the surface pressure P2 in the whole 2nd fastening surface 26 is 3/7 or more and 7/3 or less, do. Moreover, the ratio N1/N2 of the number N1 of the 1st bolts 30 and the number N2 of the 2nd bolts 40 may be 3/7 or more and 7/3 or less. For example, as shown in FIG. 14 , the number N1 of the first bolts 30 may be 5, and the number N2 of the second bolts 40 may be eight. In this case, since ratio P1/P2 of the surface pressure P1 in the 1st fastening surface 24 whole and the surface pressure P2 in the whole 2nd fastening surface 26 is 5/8, 3/7 or more 7/3 is below.

As described above, according to the die head 80 according to each modified example, the surface pressure can be distributed on the two surfaces of the first fastening surface 24 and the second fastening surface 26 . Therefore, it is possible to avoid deformation of the pedestal block 10 and the front end block 20 due to residual stress after the distal end block 20 is separated from the pedestal block 10 . In other words, it is possible to suppress a change in the state of the die head 80 before and after the distal end block 20 is separated. Therefore, according to the die head 80 which concerns on this embodiment, the front-end|tip block 20 separated from the pedestal block 10 can be reused.

[Example]

An example of the die head 80 according to the above embodiment will be given, and the technique of the present disclosure will be described in more detail. In addition, each condition shown in a following example can be changed suitably, unless it deviates from a well-known fact.

The die head 80 shown in FIG. 15 was produced under the following conditions. As shown in FIG. 15 , in the present embodiment, 26 first bolts 30 are used at intervals of 60 mm from a position of 25 mm from one end of the die head 80 as a starting point, The pedestal block 10 and the front end block 20 were fastened using 25 second bolts 40 at intervals of 60 mm from a position of 55 mm from the end of the room as a starting point. Under the following conditions, even after the distal end block 20 is separated from the pedestal block 10, the pedestal block 10 and the distal end block 20 do not deform, and the distal end block 20 is attached to the pedestal block 10. It was able to attach and detach with good precision.

<Pedestal block (10)>

·Material: stainless steel (SUS630)

Surface roughness Rz of the face 14 and face 16: 0.8 μm or less

<End block (20)>

Material: Tungsten Carbide (WC)

Rockwell hardness: 50HRC or more

Surface roughness Rz of the first fastening surface 24 and the second fastening surface 26: 0.8 μm or less

・Length in the long longitudinal direction: 1550mm

<First bolt 30>

・Number of use N1: 26

· Spacing between bolted positions: 60mm

·Material: SUS304 equivalent

・Type: Hexagon socket head mounting bolt

Nominal thread: M4, M5, M6

Tightening torque: 50 to 90% of the maximum tightening torque

<Second bolt (40)>

・Number of use N2: 25

· Spacing between bolted positions: 60mm

·Material: SUS304 equivalent

・Type: Hexagon socket head mounting bolt

Nominal thread: M4, M5, M6

Tightening torque: 50 to 90% of the maximum tightening torque

By setting the Rockwell hardness of the tip block 20 to 50 HRC or more, when the tip block 20 is separated from the pedestal block 10, deformation of the tip block 20 due to residual stress can be suppressed.

By making the surface roughness Rz of the face 14 and face 16 of the pedestal block 10 and the surface roughness Rz of the fastening face 24 and the fastening face 26 of the front end block 20 into 0.8 µm or less, respectively , the gap in the contact surface between the pedestal block 10 and the tip block 20 can be reduced, and deformation of the pedestal block 10 and the tip block 20 can be suppressed.

By setting the sizes of the first bolt 30 and the second bolt 40 to M4 or more and M6 or less, the front end block 20 and the pedestal block 10 are fastened to the pedestal block 10 while the An appropriate axial force to suppress deformation was obtained.

By setting the tightening torque of the first bolt 30 and the second bolt 40 to 50% or more and 90% or less of the maximum tightening torque, the front end block 20 is fastened to the pedestal block 10, and the front end block 20 and an appropriate axial force for suppressing deformation of the pedestal block 10 was obtained.

In addition, as for the indication of the Japanese Patent Application No. 2019-117630 for which it applied on June 25, 2019, the whole is taken in into this specification by reference. In addition, all documents, patent applications, and technical standards described in this specification are incorporated by reference in this specification to the same extent as if each document, patent application, and technical standard were specifically and individually recorded. is invoked by

Claims (12)

A die head comprising a pedestal block and a distal end block detachably provided with respect to the pedestal block, the die head discharging a coating liquid from the distal end of the distal end block,
The front end block is fastened to the pedestal block by bolts on each of a first fastening surface and a second fastening surface that respectively contact the pedestal block. The method according to claim 1,
In the front end block, all surfaces other than the first fastening surface and the second fastening surface are non-contact with the pedestal block. The method according to claim 1 or 2,
The front end block is fastened to the pedestal block by a first bolt having an axis perpendicular to the first fastening surface in the first fastening surface, and in the second fastening surface, to the second fastening surface The die head is fastened to the pedestal block by a second bolt having an axis perpendicular to the pedestal block. 4. The method according to any one of claims 1 to 3,
The angle between the first fastening surface and the second fastening surface is 90° or more and 120° or less of the die head. 5. The method according to claim 4,
An angle between the first fastening surface and the second fastening surface is 90°. 6. The method according to any one of claims 1 to 5,
The die head whose ratio P1/P2 of the surface pressure P1 in the said 1st fastening surface, and the surface pressure P2 in the said 2nd fastening surface is 3/7 or more and 7/3 or less. 7. The method of claim 6,
The die head in which the surface pressure P1 in the said 1st fastening surface and the surface pressure P2 in the said 2nd fastening surface are the same. 8. The method according to any one of claims 1 to 7,
The front end block is fastened to the pedestal block by a plurality of first bolts arranged along a longitudinal direction parallel to both of the first fastening face and the second fastening face on the first fastening surface, In the second fastening surface, it is fastened to the pedestal block by a plurality of second bolts arranged along the longitudinal direction,
The die head whose ratio N1/N2 of the number N1 of said 1st bolts and the number N2 of said 2nd bolts is 3/7 or more and 7/3 or less. 9. The method of claim 8,
A die head in which the number N1 of the first bolts and the number N2 of the second bolts are the same. 10. The method according to claim 8 or 9,
The die head is arranged in such a way that the first bolt and the second bolt repeatedly appear by the same number in the longitudinal direction. 11. The method according to any one of claims 8 to 10,
The first bolt and the second bolt are alternately arranged along the longitudinal direction of the die head. 12. The method according to any one of claims 1 to 11,
A die head having a slit in which the two front end blocks are disposed to face each other in a longitudinal direction parallel to each other, and the coating liquid is discharged between the two front end blocks.

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