JP4492374B2 - Application tool - Google Patents

Description

  The present invention relates to an application tool used for applying an application liquid to an object to be applied.

  As an application tool of this type, for example, in Patent Document 1, as shown in FIG. 3, an application tool (nozzle for applying magnetic coating material A to a flexible strip-shaped tape 12 fed in a certain direction by a rotating drum 11 is used. ) 13 is described. That is, the coating tool 13 described in Patent Document 1 has two head members (holding members) 14 that extend in the width direction of the tape 12 (direction orthogonal to the drawing in FIG. 3) and face each other. The head member 14 of the head member 14 is provided with a tip end surface 14a thereof in parallel and close to the surface of the tape 12, and the magnetic coating material passes through a slot S defined between opposing side surfaces (plate surfaces) 14b of the head members 14. A is discharged to the tip side.

  Here, a belt-like cemented carbide blade 15 extending in the width direction is provided at the tip of the head member 14, and a back surface 15a on the side of the blade 15 facing the head member 14 side. A clamp piece (connecting member) 16 in which a plurality of cylindrical boss portions 16a are formed on the strip plate 16b in the width direction is fixed by brazing, and the boss portion 16a of the clamp piece 16 is fixed to the clamp piece 16a. Is formed with a female screw 16c. On the other hand, the main body of the head member 14 has an L-shaped concave portion (step portion) 14c having a shape matching the blade 15 so as to retreat one step from the side surface 14b to the side surface 14b. A recess formed by a shallow groove 14d and a hole 14e into which the clamp piece 16 can be inserted is formed on the bottom surface of the recess 14c. The recess 14c moves backward with respect to the side surface 14b (see FIG. 3). The upper head member 14 is formed to be further recessed on the upper side and the lower head member 14 on the lower side. Further, a through hole having a small diameter portion on the hole bottom side and a large diameter portion on the opposite side is formed from the hole bottom of the hole 14e toward the side opposite to the side surface 14b of the main body of the head member 14. Has been.

Then, the blade 15 is inserted and accommodated in the recess with the clamp piece 16 on the back surface 15a, the back surface 15a is brought into contact with the bottom surface of the recess 14c, and then from the large diameter portion side of the through hole. When the inserted bolt 17 is screwed into the female screw 16c of the boss portion 16a of the clamp piece 16, the back surface 15a is brought into close contact with the bottom surface of the concave portion 14c by being pulled in the backward direction side of the head member 14, respectively. It is attached to the tip of the member 14. Therefore, according to such a coating tool, the boss portions 16a of the clamp piece 16 are scattered in the width direction, and therefore formed on the main body of the head member 14 to accommodate the clamp piece 16. Therefore, it is possible to improve the strength of the main body of the portion to which the blade 15 is attached.
Japanese Patent No. 2616033

  By the way, in the coating tool described in Patent Document 1, the blade 15 accommodated in the concave portion 14c is merely pulled in the backward direction side by the bolt 17 and attached to the main body of the head member 14. Even if the recess 14c and the blade 15 are formed with high accuracy, a slight gap is formed between the wall surface of the recess 14c facing the front end side (left side in FIG. 3) of the head member 14 and the rear end surface of the blade 15 facing the wall surface. However, it is inevitable that gaps will occur.

However, when such a gap is formed between the wall surface of the recess 14c and the rear end surface of the blade 15, that is, on the side surface 14b defining the slot S through which the coating liquid such as the magnetic paint A flows, For example, the coating liquid enters the gap and the cleaning after the completion of the coating operation becomes complicated, and resistance is generated when the coating liquid circulates through the slot S. In particular, the thickness of the coating liquid applied to the coating object is strictly limited. When high accuracy is required, it may be difficult to apply the coating liquid with a uniform film thickness that can sufficiently satisfy such accuracy.

  The present invention has been made under such a background, and the side surface of the head member that defines the slot through which the coating liquid flows when the blade is accommodated and fixed in the recess formed in the main body of the head member. It is an object of the present invention to provide a coating tool capable of preventing the formation of the gap as described above.

In order to solve the above problems and achieve such an object, according to the present invention, a groove-like slot opened at the tip of the head member is defined between the side surfaces facing each other in the plurality of head members. An application tool in which an application liquid flows through the slot and is discharged from the tip of the application tool. In at least one of the head members, the head member is stepped from the side surface to the tip side of the side surface. A head member main body formed with a recessed portion that is retracted; and a blade that is attached to the concave portion of the head member main body. The blade is pushed by a clamp member that is pushed in from the distal end side of the head member main body. attached are pressed to the rear end side of the backward side and the head member to retract relative to the side, at least in part of the head member body, A recess further recessed from the bottom surface of the recess in the retreat direction side and a screw hole drilled from the front end surface of the head member main body and communicating with the recess are formed, and the above-mentioned attached to the recess A clamp piece housed in the recess is attached to the back surface of the blade facing the backward direction, and the clamp piece opens toward the opening of the screw hole in the recess. A clamp hole whose inner diameter gradually decreases toward the bottom side is formed, and the screw hole has a tapered tip, and is eccentric to the hole wall on the receding direction side of the clamp hole. The abutting clamp screw is screwed as the clamp member .

  In the coating tool configured in this way, the blade is pressed by the clamp member against the retreat direction side in which the recess retreats with respect to the side surface defining the slot as described above and the rear end side of the head portion. Since the gap is not formed between the bottom surface of the recess and the back surface of the blade facing the recess, the rear end surface of the blade is also pressed against the wall surface facing the front end side of the recess. Thus, it is possible to avoid a gap on the side surface defining the slot of the head member.

  Accordingly, it is possible to prevent the coating liquid from entering the gap and to facilitate cleaning after the completion of the coating operation. In some cases, for example, a plurality of types of coating liquids are sequentially applied to the object to be coated. At the same time, the cleaning operation between the coating operations with each coating solution can be omitted, and the subsequent coating operation can be performed after the previous coating solution is washed away with the subsequent coating solution, thereby greatly improving the efficiency of the coating operation. It is also possible to plan. Further, since the formation of a gap on the side surface is prevented in this way, the main body side and the blade side can be more smoothly and continuously formed on the side surface of the head member. Thus, the resistance when the coating liquid flows through the slot is reduced, and even when a strict film thickness is required, the coating liquid can be applied to the coating object with a uniform thickness.

  Here, in order to press and attach the blade to the backward direction side of the recess and the rear end side of the head member by the clamp member in this way, for example, a screw member such as a bolt 17 of Patent Document 1 and a head member The clamp member may be used in combination with a screw member that is screwed in from the front end surface and presses the clamp piece to the rear end side. In such a case, the clamp operation is an operation with two types of screw members. Moreover, since it is necessary to press the blade while balancing the screwing of both screw members for each clamp piece (boss portion), there is a possibility that the work becomes complicated.

On the other hand, in the coating tool having the above-described configuration, the clamped tip of the clamp screw comes into contact with the hole wall on the retreat direction side of the clamp hole that is reduced in diameter toward the bottom of the hole. When the screw is screwed in, the clamp piece is pressed in the backward direction according to the inclination of the tip end of the clamp screw and the hole wall together with the blade, and is also pushed into the rear end side of the head member. By pressing the (clamp screw), it is possible to press in both directions, and the operation becomes extremely easy.

Incidentally, for example, similarly to the bolt 17 of the Patent Document 1, in the clamping piece, so as to screwed a screw member which is inserted into the recess from the backward side in the head member body, further a clamp piece this The blade may be pulled in the backward direction to further firmly fix the blade. Further, the clamp screw may be prevented from coming off by screwing a set screw into the screw hole into which the clamp screw is screwed in from the front end side of the head member body and bringing it into contact with the clamp screw. .

  FIG. 1 shows a first embodiment of the present invention, and the same reference numerals are assigned to parts common to the coating tool described in Patent Document 1 shown in FIG. That is, also in this embodiment, the coating tool is constituted by a plurality of head members, and a groove-like slot that opens at the tip of the head member is defined between the mutually facing side surfaces of these head members. Then, the coating liquid flows through the slot and is discharged from the tip. In addition, among the plurality of head members, at least one head member 14 according to the present embodiment whose cross section is shown in FIG. 1 is formed on the side surface 14b on the tip side (left side in FIG. 1) of the side surface 14b defining the slot. The head member main body 21 in which the recessed part 14c retreated one step from the head is formed, and the blade 15 attached to the concave part 14c of the head member main body 21 is provided.

  Here, the head member main body 21 is made of, for example, a steel material, and the concave portion 14c is parallel to the side surface 14b, and the bottom surface 22A is retracted in the retracting direction of the concave portion 14c (lower side in FIG. 1). The bottom surface 22A is provided with a wall surface 22B extending perpendicularly from the rear end side (right side in FIG. 1) of the bottom surface 22A to the opposite side to the retreat direction and orthogonal to the side surface 14b, and the bottom surface 22A is retracted from the side surface 14b. The amount is equal to the thickness of the blade 15. However, escape portions 22C for avoiding interference with the blades 15 are formed at the corners of the recesses 14c where the bottom surface 22A and the wall surface 22B intersect.

  The blade 15 is formed in a substantially flat plate shape from a material harder than the main body 21, for example, a cemented carbide similar to Patent Document 1, and the head member 14 is attached to the concave portion 14 c. A front surface 15A directed to the side surface 14a side, a back surface 15B directed to the bottom surface 22A side of the recess 21, and a rear end surface 15C directed to the wall surface 22B side are provided. The front end surface 15D of the blade 15 and the front end surface (the front end surface of the main body 22) 14a of the head member 14 are formed so as to incline in directions intersecting at equal acute angles with respect to the surface 15A and the side surface 14b, respectively. Further, as shown in FIG. 1, the front end surface 15D protrudes slightly from the front end surface 14a in a state where the blade 15 is attached to the recess 14c. However, the tip surface 15D of the blade 1 may be flush with the tip surface 14a of the head member 14 in this attached state.

  Furthermore, the back surface 15B of the blade 15 is spaced in the longitudinal direction of the head member 14 (the direction perpendicular to the drawing of FIG. 1; the width direction for a coating object such as tape, film, or glass not shown). A cylindrical clamp piece 16 made of steel or the like is attached by brazing or the like so that its center line is perpendicular to the back surface 15B and protrudes in the backward direction side. An internal thread 16c centering on the center line is formed from the end face on the side. And the concave conical surface-shaped clamp hole part 23 centering on the centerline C orthogonal to the said centerline is formed in the part which faces the said front end side among the outer peripheral surfaces of this clamp piece 16, Therefore, this As for the clamp hole part 23, an internal diameter will reduce gradually as it goes to the hole bottom side.

  On the other hand, from the bottom surface 22A of the recess 14c, a recess 24 is formed at a position where the clamp piece 16 can be accommodated with the blade 15 attached to the recess 14c. The recess 24 has, in order from the bottom surface 22A toward the backward direction side, a large diameter portion 24A that opens to the bottom surface 22A, and an inner diameter and a depth at which the cylindrical clamp piece 16 having a smaller diameter than that can be loosely inserted. A medium-diameter portion 24B, a smaller-diameter portion 24C having a smaller diameter and a larger diameter than the female screw 16c, and an opening 24D that opens to the backward direction side of the main body 21 of the head member 14, that is, the main body 21 is formed so as to penetrate through the distal end portion in the backward direction. In the present embodiment, the opening 24D is opened on the inclined front end surface 14a of the main body 21, and a screw member (bolt) 17 such as a round screw is inserted from the opening 24D. Can be screwed into the female screw 16c of the clamp piece 16 housed in the housing.

  Further, the clamp piece 16 is thus housed in the recess 24 and the blade 15 is attached to the recess 14 c, so that the distal end surface 14 of the main body 21 of the head member 14 faces the medium diameter portion 24 B of the recess 24. Is a screw hole 25 having a center line X that extends parallel to the center line C of the clamp hole 23 of the clamp piece 16 but has a center line X slightly deviated from the center line C toward the backward direction. Is formed and opened on the inner peripheral surface on the tip side of the medium diameter portion 24B. The screw hole 25 is provided with a clamp screw 26 in which a tip portion 26A directed toward the recess 24 is tapered, for example, in a conical shape with the center line X as a center. The tip end portion 26A is projected into the medium diameter portion 24B and is brought into contact with the clamp hole portion 23 of the clamp piece 16 accommodated in the medium diameter portion 24B.

  In such a coating tool, the clamp screw 26 is screwed into a screw hole 25 having a center line X eccentric to the backward direction side with respect to the center line C of the clamp hole portion 23 of the clamp piece 16. As for the outer peripheral surface forming the convex conical surface shape of the tip portion 26A, as shown in FIG. 1, only the portion on the retreating direction side is also on the retreating direction side of the inner peripheral surface forming the concave conical surface shape of the clamp hole 23. The clamp hole 23 is pressed against only the portion, and the clamp piece 16 is pulled in the retracting direction together with the blade 15 and is also pressed and pressed against the rear end side of the head member 14. In addition, when the clamp hole portion 23 and the tip end portion 26A of the clamp screw 26 are both formed in an uneven conical surface shape, the taper angles are preferably equal to each other.

  Therefore, in the coating tool having the above-described configuration, the blade 15 is pulled in the backward direction side and is also pressed against the rear end side of the head member 14 to be attached to the concave portion 14c, whereby the back surface 15B and the concave portion 14c of the blade 15 are attached. It is possible to prevent a gap from being formed not only between the bottom surface 22A but also between the rear end surface 15C of the blade 15 on the rear end side and the wall surface 22B of the recess 14c. For this reason, it is possible to prevent the coating liquid from entering the gap and make it difficult to perform cleaning. As described above, the upstream coating liquid is washed away by the subsequent coating liquid, and the coating with a plurality of types of coating liquids is performed efficiently. The surface 15A of the blade 15 and the side surface 14b can be formed so as to be flush with each other with high precision and are defined by the side surface 14b. The resistance of the coating liquid flowing through the slot can be suppressed, and the coating liquid can be applied to the object to be coated with a uniform thickness.

  In the present embodiment, as described above, the screw member 17 inserted into the recess 24 from the backward direction side is screwed to the clamp piece 16 separately from the clamp screw 26. By tightening the screw member 17 and the clamp screw 26 while maintaining a balance with each other, the blade 15 is firmly pressed by the backward direction side and the rear end side of the head member 14 to thereby make a bottom surface 22A and a wall surface 22B. It is possible to securely fix them without gaps.

  Next, FIG. 2 shows a second embodiment of the present invention, and the same reference numerals are assigned to the parts common to the first embodiment shown in FIG. 1 and the application tool shown in FIG. The description is omitted. That is, in the present embodiment, the set screw 27 is screwed into the screw hole 25 into which the clamp screw 26 is screwed from the front end surface 14a of the main body 21 of the head member 14 and further from the front end side of the main body 21 of the head member 14. The clamp screw 26 is brought into contact with a rear end surface (a surface facing the front end side with respect to the head member 14).

  Here, a front end surface 27 </ b> A (a surface facing the rear end side with respect to the head member 14) 27 </ b> A that contacts the rear end surface of the clamp screw 26 of the set screw 27 is a flat surface orthogonal to the center line X of the screw hole 25. Further, except that a wrench hole or the like (not shown) is formed, it can be brought into close contact with the rear end surface of the clamp screw 26 which is a flat surface orthogonal to the center line X. In the present embodiment, the front end surface 14a of the main body 21 of the head member 14 extends in a direction orthogonal to the side surface 14b, and the recess 24 is not formed with a small diameter portion 24C and an opening 24D, but is a blind hole shape. In addition, a female screw 16 c is not formed on the clamp piece 16, and a screw member (bolt) 17 is not screwed to the clamp piece 16.

  In the second embodiment, as in the first embodiment, the clamp piece 26 is pressed by the clamp screw 26 together with the blade 15 toward the retreat direction side and the rear end side of the head member 14. Can be prevented from loosening or falling off by attaching the set screw 27 into the screw hole 25 to contact the clamp screw 26 and further pressing it. Therefore, the above-described efficient application work, uniform application of the coating liquid, etc. are performed while maintaining a state where there is no gap between the wall surface 22B of the recess 14c and particularly the rear end surface 15C of the blade 15 over a long period of time. Can be encouraged.

  Further, in this embodiment, pressing the blade 15 together with the clamp piece 16 against the backward direction side and the rear end side of the head member 14 is performed by one screw piece screwed into the screw hole 25 with respect to one clamp piece 16. For example, as in the first embodiment, the screw member 17 is screwed to the clamp piece 16 in addition to the clamp screw 26, or the clamp piece 16 is moved backward and forward. Compared with providing the screw members to be pressed separately to the end side, the operation is simple and it is not necessary to balance the pressing between the screw members.

  In the first and second embodiments, the cylindrical clamp piece 16 is joined to the back surface 15B of the blade 15 by brazing or the like at intervals in the longitudinal direction of the head member 14 as described above. In the same manner as the clamp piece (connecting member) described in Patent Document 1, a cylindrical boss portion is formed on the band plate at an interval, or the attached clamp piece is attached to the band plate. You may make it attach to the braid | blade 15 by joining to the back surface 15B. Further, the other head member that defines the slot facing the first and second embodiments may or may not have the same configuration as those of the first and second embodiments. May be.

It is sectional drawing of the front-end | tip part of the head member 14 which shows the 1st Embodiment of this invention. It is sectional drawing of the front-end | tip part of the head member 14 which shows the 2nd Embodiment of this invention. It is sectional drawing which shows the conventional coating tool.

Explanation of symbols

14 Head member 14a Front end surface of head member 14b Side surface of head member 14 14c Recess 15 Blade 15A Front surface of blade 15B Back surface of blade 15 15C Rear end surface of blade 15 16 Clamp piece 17 Screw member (bolt)
21 Main body of head member 14A Bottom surface of recess 14c 22B Wall surface of recess 14c 23 Clamp hole 24 Recess 25 Screw hole 26 Clamp screw 27 Set screw C Center line of clamp hole 23 X Center line of screw hole 25

Claims (3)

A grooved slot that opens at the tip of the head member is defined between the side surfaces facing each other in the plurality of head members, and the coating liquid flows through the slot and is discharged from the tip. In at least one of the head members, the head member is attached to the concave portion of the head member main body, the head member main body having a concave portion that is recessed one step from the side surface on the distal end side of the side surface. And the blade is pressed against the retreat direction side in which the recess is retracted from the side surface and the rear end side of the head member by the clamp member pushed from the front end side of the head member main body. Attached,
At least one of the head member main bodies has a recess further recessed from the bottom surface of the recess in the backward direction side, and a screw hole drilled from the front end surface of the head member main body and communicating with the recess. A clamp piece housed in the recess is attached to the back surface of the blade that is formed and attached to the recess and faces the backward direction, and the clamp piece is attached to the clamp piece in the recess. A clamp hole portion is formed which opens toward the opening portion of the screw hole and gradually decreases in inner diameter toward the hole bottom side, and the tip end portion is tapered in the screw hole. An application tool , wherein a clamp screw that is eccentrically brought into contact with the hole wall on the retreat direction side of a portion is screwed as the clamp member . The application tool according to claim 1 , wherein a screw member inserted into the recess from the backward direction side is screwed to the head of the clamp member. The aforementioned screw hole which the clamping screw is screwed, in claim 1 or claim 2 is screwed a set screw from the front end side of the head member body, characterized in that it is brought into contact with the clamping screw Application tool described.

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