JP6016379B2 - Coating cap and method for producing the same - Google Patents

Description

  The present invention relates to a coating cap.

  2. Description of the Related Art Conventionally, a cap that is attached to a container that stores a coating agent such as a hair dye, and that is provided with an applicator such as a comb or a brush for applying the coating agent is known. In such a cap for application, a cap part for mounting on the container and an application part for applying the coating agent are formed, and the coating agent accommodated in the container is supplied from the inlet on the cap part side. An internal channel for leading to the outlet on the application part side is formed. For this reason, the coating agent accommodated in the container can be discharged from an application part and applied to hair as it is.

  By the way, this type of coating cap is generally a resin molded product, and is designed in a shape that allows a molding die to be extracted during molding. For example, when a mold for forming the internal flow path is extracted from the inlet, the internal flow path is designed to gradually narrow from the upstream side to the downstream side. For this reason, the range which can form an outflow port in an application part becomes narrow, and a coating agent cannot be discharged in a wide range. In view of this, a configuration has been proposed in which the cap portion and the application portion are formed of different members, and a portion where the cross section of the flow path is enlarged is formed in the internal flow path (see Patent Document 1).

JP 2003-93140 A

  However, since a strong external force may be applied to the coating portion of the coating cap when the coating agent is applied, in the configuration in which the cap portion and the coating portion are formed of separate members, the coating portion is separated from the cap portion. There is a possibility that it will come off. However, when the cap part and the application part are formed integrally, the degree of freedom of the shape of the internal flow path is lowered as described above.

  The present invention has been made in view of these problems, and an object thereof is to provide a technique for increasing the degree of freedom of the shape of the internal flow path while integrally forming the cap portion and the application portion. .

  The coating cap of the present invention is formed with a cap portion for mounting on a container for storing the coating agent and an application portion for applying the coating agent, and the coating agent stored in the container is used as the cap portion. An internal flow path for leading from the side inlet to the outlet on the application part side is formed.

  Specifically, the coating cap includes a main body member and a sealing member. The main body member is integrally formed with a cap part and an application part, and communicates between the intermediate position of the internal flow path (any position downstream from the inlet and upstream from the outlet) and the outside. It is a resin member in which holes are formed. On the other hand, the sealing member is a member that seals the communication hole. An enlarged portion of the cross section of the flow path that is not included in the inflow port is formed at an intermediate position of the internal flow path.

  According to such a configuration, since the molding die that forms at least a part of the internal flow path can be extracted from the communication hole, the enlarged portion of the cross-section of the flow path that is not included in the inflow port is provided in the middle of the internal flow path. Can be formed in position. Therefore, the degree of freedom of the shape of the internal channel can be increased.

  By the way, the application part may be one in which a plurality of protrusions are arranged, and in this case, the outlet may be formed in a groove shape extending in the arrangement direction of the protrusions. According to such a configuration, the coating agent is more easily discharged compared to an outlet having a large number of holes, and an increase in internal pressure in the internal flow path is suppressed, so that the sealing member is not easily detached from the communication hole. Can do.

  Further, the enlarged portion may include a portion where the flow path cross section gradually increases from the upstream side to the downstream side. According to such a configuration, it is possible to make it difficult for the unevenness of the flow rate of the coating agent at the outflow port to occur as compared with the configuration in which the flow path cross-section increases rapidly.

  Moreover, the rod-shaped part inserted in an expansion part may be formed in the sealing member. According to such a structure, the retention strength of the coating agent in the enlarged portion can be increased. For this reason, when it uses so that an application part may face downward, for example, dripping of an application agent can be controlled.

  On the other hand, the manufacturing method of the coating cap of the present invention is formed with a cap portion for mounting on a container for storing a coating agent and a coating portion for coating the coating agent, and is stored in the container. A method of manufacturing a coating cap in which an internal flow path for guiding a coating agent from an inlet on a cap part side to an outlet on a coating part side is formed, wherein the cap part and the coating part are integrally molded, A resin main body member formed with a communication hole that communicates the intermediate position of the flow path with the outside is molded using a mold that is extracted from the inlet and a mold that is extracted from the communication hole, The main body member is sealed with a separate sealing member.

  According to such a manufacturing method, since the mold extracted from the communication hole is used separately from the mold extracted from the inlet, an enlarged portion of the channel cross section not included in the inlet is formed at an intermediate position of the internal channel. can do. Therefore, the degree of freedom of the shape of the internal channel can be increased.

(A) is a top view of the cap for application of embodiment, (B) is the left view, (C) is the front view. It is a perspective view of the cap for application of an embodiment. It is sectional drawing of the front view of the cap for application of embodiment. (A) is the top view of the sealing member of embodiment, (B) is the front view, (C) is the right view, (D) is the back view, (E) is the bottom view. (A) is sectional drawing of the front view which shows the state at the time of the shaping | molding of the main body member of embodiment, (B), (C) is the figure which shifted the position of the metal mold | die shown to (A). (A) is sectional drawing of the side view cut | disconnected in the position of the comb tooth which shows the state at the time of shaping | molding of the main body member of embodiment, (B) is the figure which shifted the position of the metal mold | die shown to (A), (C) Is a cross-sectional view cut at the position of the rod-shaped member, and (D) is a view in which the position of the mold shown in (C) is shifted. (A) is the top view of the 5th metal mold | die of embodiment, (B) is the front view, (C) is the right view, (D) is the back view, (E) is the bottom view. . (A) is a plan view of a fifth mold of the first modification, (B) is a front view thereof, (C) is a right side view thereof, (D) is a rear view thereof, and (E) is a bottom view thereof. It is. (A) is a plan view of the sealing member of the second modification, (B) is a front view thereof, (C) is a right side view thereof, (D) is a rear view thereof, and (E) is a bottom view thereof. . (A) is the front view of the sealing member of a 3rd modification, (B) is the right view, (C) is the back view. (A) is the front view of the sealing member of a 4th modification, (B) is the right view, (C) is the back view. (A) is the front view of the sealing member of a 5th modification, (B) is the right view, (C) is the back view. (A) is the front view of the sealing member of a 6th modification, (B) is the right view, (C) is the back view. (A) is the front view of the sealing member of a 7th modification, (B) is the right view, (C) is the back view. (A) is sectional drawing of the front view which shows the state at the time of the shaping | molding of the main body member of an 8th modification, (B) is the figure which shifted the position of the metal mold | die shown to (A). It is sectional drawing of the front view of the cap for application formed using the main body member of the 8th modification. It is a perspective view of the cap for application as a 9th modification.

Embodiments to which the present invention is applied will be described below with reference to the drawings.
As shown in FIGS. 1 (A) to 1 (C) and FIG. 2, the coating cap 1 contains a chemical solution as a coating agent (for example, hair nail polish, oxidative hair dye, decoloring decoloring agent, temporary colorant, etc.). It is to be attached as a cap to the container. The container to be mounted is not particularly limited. For example, a bottomed cylindrical resin squeeze container (bottle container) with an opening formed in the upper part, a tube-shaped (squeezed-out type) container, and the like are well known. Can be used. Also, the method for attaching the coating cap 1 to the container is not particularly limited, for example, screwed attachment, engagement, adhesion, and attachment by pressure bonding. A check valve is preferably provided at the opening of the container.

  First, the external shape of the coating cap 1 will be described. An application part 13 for applying a chemical solution is formed on the upper part of the application cap 1, and a cap part 14 for attaching to the container is formed on the lower part.

  A plurality of comb teeth 131 and a plurality of rod-shaped members 132 are arranged in the application unit 13, and a vertical comb and brush are formed by these. Specifically, the comb teeth 131 are plate-like protrusions extending upward, and are arranged in a row in a direction parallel to each other. The bar-shaped members 132 are bar-shaped protrusions extending upward, and are arranged in two rows along the arrangement direction of the comb teeth 131. The rod-shaped members 132 are alternately arranged with the comb teeth 131 so as to be positioned between the comb teeth 131, and the tips thereof are formed lower than the height of the comb teeth 131. Further, an outlet 133 for discharging the chemical liquid is formed in the application unit 13 at a position that becomes the root of the comb teeth 131. The outflow port 133 is formed in a groove shape extending in the arrangement direction of the comb teeth 131 and the rod-shaped member 132.

  Next, the internal shape of the coating cap 1 will be described. As shown in FIG. 3, the inside of the coating cap 1 has an inflow port 141 (an opening formed in the lower surface of the coating cap 1) on the cap portion 14 side that communicates the chemical contained in the container with the inside of the container. In addition, an internal flow path 15 is formed for leading to the outlet 133 on the application unit 13 side (opening formed in the upper surface of the application cap 1). An intermediate position of the internal flow path 15 (a position downstream of the inlet 141 and upstream of the outlet 133, in this example, a position before the outlet 133) is included in the inlet 141. An enlarged portion 151 (at least part of which is wider than the inflow port 141) of the cross section of the flow path that is not formed is formed. The enlarged portion 151 spreads in an inverted triangular shape when viewed from the front, and a portion where the flow path cross-sectional area gradually increases from the upstream side to the downstream side is formed. That is, the enlarged portion 151 has a larger channel cross section in the arrangement direction of the comb teeth 131 than the inflow port 141. Note that the enlarged portion 151 does not necessarily have a portion where the flow path cross-sectional area becomes large. For example, even if the cross-sectional area is the same, the flow shape can be changed by changing the cross-sectional shape from circular to elliptical. You may make it form the part whose cross-sectional shape becomes larger than the inlet 141 (form the flow-path cross section which is not included in the inflow port 141). However, if the flow path cross-sectional area is increased, the speed at which the chemical liquid is discharged becomes slow, and therefore, it is possible to prevent the chemical liquid from being discharged quickly only at the center of the outlet 133. The specific shape of the internal channel 15 will be described later.

Next, components of the coating cap 1 will be described. The coating cap 1 is composed of a main body member 11 and a sealing member 12, both of which are resin molded products.
The main body member 11 is obtained by integrally molding the application part 13 and the cap part 14. The main body member 11 is formed with a circular communication hole 16 that communicates the intermediate position of the internal flow path 15 and the outside of the side surface in the lateral direction (direction orthogonal to the axial direction of the internal flow path 15). By sealing 16 with the sealing member 12, the internal flow path 15 mentioned above is formed.

  As shown in FIGS. 4A to 4E, the sealing member 12 has an outer shape corresponding to the inner diameter of the communication hole 16 so that the communication hole 16 can be closed in a state of being inserted into the communication hole 16. It is formed in a cylindrical shape. Moreover, the front end surface 121 of the sealing member 12 forms the wall surface of the flow path of the enlarged portion 151, and has a flat shape inclined so as to face obliquely upward. In the present embodiment, an annular concave portion 161 is formed on the inner peripheral surface of the communication hole 16, and an annular convex portion 122 that matches the annular concave portion 161 is formed on the outer peripheral surface of the sealing member 12. This is an example of a structure for fixing the sealing member 12 to the main body member 11, and may be, for example, screw fixing, adhesion fixing, ultrasonic welding fixing, or the like.

  Next, a method for manufacturing the coating cap 1 will be described. As shown in FIGS. 5A to 5C and FIGS. 6A to 6D, the main body member 11 is molded using five molds 181 to 184 and 19. The first mold 181 is for forming the application part 13 (the comb teeth 131, the rod-shaped member 132, the outflow port 133, etc.) in the main body member 11, and is relatively relative to the main body member 11 at the time of molding. Move up and down. The second mold 182 is for forming a part of the cap portion 14 and the internal flow path 15 in the main body member 11 (portion upstream from the enlarged portion 151). On the other hand, it moves relatively up and down. The third mold 183 and the fourth mold 184 are for forming the outer surface of the main body member 11, and are relatively formed with respect to the main body member 11 at the time of molding. ) Move in the left-right direction. The fifth mold 19 is for forming the communication hole 16 and the enlarged portion 151 of the internal flow path 15 and is relatively formed with respect to the main body member 11 at the time of molding. In the left-right direction (in other words, the direction perpendicular to the moving direction of the second mold 182). Here, the relative movement includes a case where the position of the main body member 11 is fixed and the mold is moved, and a case where the position of the mold is fixed and the main body member 11 is moved. In addition, the movement referred to here includes movement with rotation. For example, when a screw thread is provided on the mold, the mold is pulled out or forcibly pulled out while rotating, but such movement is also included.

  As shown in FIGS. 7A to 7E, in the fifth mold 19, an insertion portion 191 for forming the enlarged portion 151 is formed in a columnar shape, and the distal end surface 192 is obliquely below. It has a flat shape that is inclined to face. An annular convex portion 193 for forming the annular concave portion 161 of the communication hole 16 is formed on the outer peripheral surface of the fifth mold 19.

  As described above, after forming the internal flow path 15 using the fifth mold 19 extracted from the communication hole 16 separately from the second mold 182 extracted from the inflow port 141, the body member 11 is separated from the main body member 11. The communication hole 16 is sealed with the sealing member 12. As a result, an enlarged portion 151 having a larger channel cross section than the inflow port 141 can be formed at an intermediate position of the internal channel 15.

  Next, a specific shape of the internal flow path 15 will be described. The internal flow path 15 is roughly divided into a portion upstream of the enlarged portion 151 (a portion where the inflow port 141 is formed), an enlarged portion 151, and a portion of the outflow port 133.

  The upstream portion of the enlarged portion 151 has a substantially constant width in the front view (width in the left-right direction) as shown in FIG. 3 and the like, and the width in the side view (front and back) as shown in FIG. Direction width) is gradually narrowed from the upstream side to the downstream side. That is, the channel cross-sectional area gradually decreases from the upstream side to the downstream side.

  As shown in FIG. 3 and the like, the enlarged portion 151 is a flat surface in which the left and right walls in the front view are inclined, and the width in the front view gradually increases from the upstream side to the downstream side (in an inverted triangle shape). It is getting wider. In this example, the front view shape of the enlarged portion 151 is a line-symmetric (left-right symmetric) shape. In other words, the shape of the front end surface 192 of the fifth mold 19 and the front end surface 121 of the sealing member 12 are axisymmetric and have the same shape. In addition, it is not limited to such a line symmetrical shape, It is good also as an asymmetrical shape. However, the line-symmetric shape is preferable in that the flow rates of the drugs are easily aligned in the arrangement direction of the comb teeth 131.

On the other hand, as shown in FIG. 6D and the like, the side view of the enlarged portion 151 is circular, and after gradually widening from the upstream side to the downstream side, it gradually narrows.
Further, the outlet 133 is divided into four at the position where the comb teeth 131 are formed in front view as shown in FIG. 1 (A), FIG. 3 and the like, and in side view as shown in FIG. 6 (D) and the like. The width of is substantially constant and narrow.

  As described above, according to the coating cap 1 of the present embodiment, the internal flow rate is determined by using the fifth mold 19 extracted from the communication hole 16 separately from the second mold 182 extracted from the inflow port 141. In order to form a part (enlarged portion 151) of the channel 15, an enlarged portion 151 having a larger channel cross section than the inlet 141 can be formed at an intermediate position of the internal channel 15. Therefore, the degree of freedom of the shape of the internal flow path 15 can be increased, and the internal flow path 15 that can discharge the chemical solution in a wide range of the application unit 13 can be realized.

  In addition, since the application part 13 and the cap part 14 are integrally molded, the application part 13 is separated from the cap part 14 as compared with a configuration in which the application part 13 and the cap part 14 are formed of different members. Can prevent problems such as Moreover, the problem that hair will be pinched | interposed into the junction part of the application part 13 and the cap part 14 can also be suppressed. In particular, the application part 13 is formed of a single mold (first mold 181) and can prevent the occurrence of parting lines and burrs on the outer surfaces of the comb teeth 131 and the rod-shaped member 132. It is hard to clog, it is hard to damage hair and the ground, and the performance as an applicator can be improved.

  Further, since the outflow port 133 is formed in a groove shape extending in the arrangement direction of the comb teeth 131 and the rod-shaped members 132, the chemical liquid is more easily discharged compared to the case where the holes are formed with a large number of holes. Increase in internal pressure is suppressed. As a result, the sealing member 12 can be made difficult to come off from the communication hole 16.

  Further, since the enlarged portion 151 includes a portion where the flow path cross-sectional area gradually increases from the upstream side to the downstream side, the outflow amount of the chemical solution at the outlet 133 is compared with a configuration in which the flow path cross-sectional area increases rapidly. It is possible to make it difficult for the bias to occur.

  Further, since the communication hole 16 is formed in a circular shape, the main body member 11 and the sealing member 12 can be easily fitted, and the sealing performance can be improved. As a result, leakage of the chemical solution from the communication hole 16 can be made difficult to occur.

As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that this invention can take a various form, without being limited to the said embodiment.
(1) In the above embodiment, as shown in FIGS. 7A to 7E, the fifth mold 19 in which the insertion portion 191 for forming the enlarged portion 151 is formed in a columnar shape is used. However, the present invention is not limited to this. For example, in a fifth mold 29 as a first modification shown in FIGS. 8A to 8E, an insertion portion 291 for forming the enlarged portion 151 is formed in a plate shape instead of a columnar shape. . When such a fifth mold 29 is used, the width in a side view of the enlarged portion 151 of the internal flow path 15 can be made constant. For this reason, it is possible to form a portion where the flow path cross-sectional area increases at a constant rate from the upstream side to the downstream side. In addition, when using the 5th metal mold | die 29, as shown to FIG. 9 (A)-(E), when the sealing member 22 as a 2nd modification by which the front-end | tip part was formed in plate shape is used. Good. In particular, the sealing member 22 as the second modified example has a quadrilateral (non-circular) cross-sectional shape at the tip, and the cross-sectional shape at the tip is circular like the sealing member 12 (FIG. 4) of the above embodiment. Since the direction in which insertion is possible is limited as compared with the (perfect circle), it can be difficult to insert in a direction different from the prescribed direction.

  (2) In the said embodiment, as shown to FIG.4 (A)-(E), although the sealing member 12 in which the front end surface 121 was formed flat was illustrated, it is not limited to this. For example, a sealing member 32 as a third modified example shown in FIGS. 10A to 10C has a shaft on the tip surface of the sealing member 22 of the second modified example shown in FIGS. A bar-shaped portion 321 having a rectangular cross section extending in the direction is formed. The front end surface of the rod-shaped portion 321 has a planar shape inclined so as to face obliquely downward so as to contact the wall surface of the enlarged portion 151 formed by the main body member 11. Moreover, the rod-shaped part 321 is formed slightly smaller than the flow path of the enlarged part 151 in a side view. For this reason, the retention strength of the chemical | medical solution in the expansion part 151 can be improved, and when it is used so that the application part 13 may face downward, even if it is a low viscosity chemical | medical solution, it may make it difficult to spill from the application part 13. it can. Moreover, it becomes possible to make it respond | correspond to the chemical | medical solution of various viscosities by changing according to the viscosity of a chemical | medical solution, such as the presence or absence and kind of rod-shaped part 321.

  (3) The sealing member 32 of the third modification shown in FIGS. 10A to 10C has a rod-like shape on the distal end surface of the sealing member 22 of the second modification shown in FIGS. Although the part 321 is formed, it is not limited to this. For example, a sealing member 42 as a fourth modification shown in FIGS. 11A to 11C is a cross section extending in the axial direction on the distal end surface 121 of the sealing member 12 shown in FIGS. A square rod-shaped portion 421 is formed. The front end surface of the rod-shaped portion 421 has a planar shape inclined so as to face obliquely downward so as to contact the wall surface of the enlarged portion 151 formed by the main body member 11. Moreover, the rod-shaped part 421 is formed slightly smaller than the flow path of the enlarged part 151 in a side view.

  (4) Although the sealing member 42 of the 4th modification shown to FIG. 11 (A)-(C) forms the cross-section square-shaped rod-shaped part 421, it is not limited to this. For example, a rod-like portion 521 of a sealing member 52 as a fifth modification shown in FIGS. 12A to 12C has a circular cross section. Further, for example, a rod-like portion 621 of a sealing member 62 as a sixth modification shown in FIGS. 13A to 13C has an elliptical cross section. Further, for example, a rod-like portion 721 of a sealing member 72 as a seventh modified example shown in FIGS. 14A to 14C has a triangular cross section. In particular, as shown in FIGS. 10 (C), 11 (C), 13 (C), and 14 (C), the rod-shaped portion having a non-circular (non-circular shape) cross-sectional shape is By rotating (tilting at a predetermined angle such as 45 degrees or 90 degrees), the flow path resistance in the internal flow path 15 (enlarged portion 151), the flow direction, and the like can be changed. For this reason, the flow volume of a chemical | medical solution can be adjusted or the dripping of a chemical | medical solution with low viscosity can be suppressed.

  (5) In the above embodiment, the enlarged portion 151 is formed by using the fifth mold 19 that can be extracted from the circular communication hole 16, but is not limited thereto. For example, as shown in FIGS. 15A and 15B, the main body member 31 as the eighth modified example has a rectangular communication by using a rectangular fifth metal mold 39 having a long section in the vertical direction. A hole 36 is formed. For this reason, as shown in FIG. 16, the ratio of the enlarged part 351 to the internal flow path 351 can be increased, and a shape that gently spreads from the upstream side to the downstream side can be realized. In addition, it is not restricted to a rectangle, For example, it is good also as a trapezoid spreading upwards.

  (6) In the above embodiment, the application unit 13 in which the plurality of comb teeth 131 and the rod-shaped members 132 are arranged is illustrated, but the present invention is not limited to this. For example, as shown in FIG. 17, a plurality of comb teeth 131 are arranged in the application portion 43 of the application cap 4 as the ninth modification, as in the above embodiment (FIG. 2). In the meantime, instead of the rod-shaped member 132 of the above-described embodiment, plate-like protrusions 432 extending upward are arranged in two rows along the arrangement direction of the comb teeth 131. Even if it is such a structure, the effect similar to the said embodiment is acquired.

  (7) In the above embodiment, the enlarged portion 151 in which the channel cross-sectional area is gradually increased from the upstream side to the downstream side (smoothly in an inverted triangle shape) is illustrated, but the embodiment is limited to this. Instead, for example, it may be formed so as to be stepped.

  DESCRIPTION OF SYMBOLS 1,4 ... Cap for application | coating, 11, 31 ... Main body member, 12, 22, 32, 42, 52, 62, 72 ... Sealing member, 13 ... Application | coating part, 14 ... Cap part, 15, 35 ... Internal flow path , 16 ... communication hole, 19, 29 ... fifth mold, 131 ... comb teeth, 132 ... rod-shaped member, 133 ... outlet, 141 ... inlet, 151, 351 ... enlarged portion, 181 ... first mold , 182 ... second mold, 183 ... third mold, 184 ... fourth mold

Claims (5)

A cap part for mounting on a container for storing the coating agent and an application part for applying the coating agent are formed, and the coating agent accommodated in the container is connected to the inlet on the cap part side An application cap formed with an internal flow path for leading from the application part to the outlet on the application part side,
A resin-made main body member in which the cap part and the application part are integrally molded, and a communication hole for communicating an intermediate position of the internal flow path and the outside is formed;
A sealing member for sealing the communication hole;
With
In the intermediate position of the internal flow path, an enlarged portion of the flow path cross section that is not included in the inflow port is formed ,
The enlarged portion is applied cap, characterized in that that will be included on the extension of the communication hole. The application cap according to claim 1,
The application part is a plurality of protrusions arranged,
The said outflow port is formed in the groove shape extended in the sequence direction of the said protrusion part. The coating cap characterized by the above-mentioned. A coating cap according to claim 1 or claim 2,
The enlarged portion includes a portion in which a cross section of the flow path gradually increases from the upstream side to the downstream side. The coating cap according to any one of claims 1 to 3, wherein
The sealing cap is formed with a rod-like portion that is inserted into the enlarged portion. A cap part for mounting on a container for storing the coating agent and an application part for applying the coating agent are formed, and the coating agent accommodated in the container is connected to the inlet on the cap part side A coating cap manufacturing method in which an internal flow path for guiding the flow path to the outlet on the application section side is formed, and an enlarged section of a flow path cross section not included in the inlet is formed at an intermediate position of the internal flow path Because
Said cap portion and said coating portion is integrally molded, the internal flow path the intermediate position and the resin of the body member communicating hole formed which communicates with the outside of the mold withdrawing from said inlet, Molded using a mold extracted from the communication hole,
The enlarged portion is formed by a mold extracted from the communication hole,
The communication hole is sealed with a sealing member separate from the main body member. A method for manufacturing a coating cap.

Images