Method for manufacturing a housing for an aerosol valve

Abstract

To make it possible to manufacture a housing for an aerosol valve that includes vapor tap holes of different inner diameters in one set of cavity and core mold combination.SOLUTION: There is provided a manufacturing method of a housing for an aerosol valve in which a vapor tap hole is provided at an appropriate location on the body part of the housing. The vapor tap holes 15 are provided in the vertical direction on the bottom portion 10h of the body part 10b, and the housing 10 is formed from a set of molds having a cavity and core combination. A plurality of protruding portions with different outer diameters and the same height are provided on the upper surface of the intermediate part inside a cavity to form the vapor tap holes 15. Meanwhile, by providing a protruding flat surface on the bottom portion of the core that is in contact with one of these protruding portions, by selecting one of the protruding portions and bringing the protruding flat surface in contact with the protruding portion, it is possible to mold a housing for an aerosol valve having vapor tap holes of different inner diameters.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing a housing that constitutes an aerosol valve provided approximately in the center of an upper mountain cup of an aerosol container. More specifically, the present invention relates to a manufacturing method for a housing having a vapor tap hole. [Background technology]

[0002] Conventional aerosol valve housings are of two types: those with vapor tap holes in appropriate locations, and those without. Although it is common for such a valve to not have a vapor tap hole, there is a demand for a valve to have a vapor tap hole when necessary.

[0003] In the case of a nozzle equipped with a vapor tap hole, this has the effect of making the sprayed mist finer in relation to the under-tap hole at the lower end. More specifically, the relationship between the cross-sectional area of ​​the vapor tap hole and the cross-sectional area of ​​the upper end passage (under-tap hole) of the connection part that connects to the dip tube at the lower end of the housing has the effect of making the spray particles sprayed from the nozzle finer.

[0004] FIG. 7 illustrates a conventional housing for an aerosol valve, where (A) is a plan view and (B) is a central vertical cross-sectional view of (A). The conventional housing 50 has a connection part 52 extending downward from the center of the bottom surface of a bottomed cylindrical main body 51, and one end of a dip tube that sucks up the liquid contents inside the aerosol container is connected to this connection part 52.

[0005] The connecting portion 52 and the inside of the main body portion 51 communicate with each other through a passage 53. This passage 53 is called an undertap hole. In this conventional example, vapor tap holes 55 are provided in the peripheral wall of the main body 51 at appropriate positions in the lateral direction (horizontal direction).

[0006] The housing 50 of the above-mentioned conventional example is manufactured by injection molding of synthetic resin using a set of molds having a cavity and a core. According to this molding method, the vapor tap hole 55 is formed by using a slide pin that slides laterally in a pair of dies.

[0007] When using slide pins for molding in this manner, an operating space is required in which the slide pins can reciprocate. Therefore, the die requires extra space to accommodate the movement of the slide pin. This has been an obstacle to increasing the number of products that can be produced. Summary of the Invention [Problem to be solved by the invention]

[0008] Therefore, the objective of the present invention is to reduce the mold space in order to increase the number of products that can be produced, to enable molding without using slide pins, and further to make it possible to produce aerosol valve housings with vapor tap holes of several different inner diameters by combining a single set of cavity and core molds.

[0009] In other words, the objective is to make it possible to mold housings having vapor tap holes with different inner diameters by changing the way a set of cavities and cores are combined. [Means for solving the problem]

[0010] In order to solve the above problems, the first aspect of the present invention is a method for manufacturing a housing for an aerosol valve, which has a connection part for a tube that sucks up the contents of an aerosol container in the center of the bottom surface of a main body shaped like a bottomed cylinder, this connection part is connected to the inside of the main body, and a vapor tap hole is provided at an appropriate position of the main body, wherein the vapor tap hole is provided in the vertical direction on the bottom surface of the main body, and the housing can be molded from a set of molds consisting of a combination of a cavity and a core, and a plurality of protrusions of different outer diameters and the same height for forming the vapor tap hole are provided on the upper surface of the annular intermediate step inside the cavity, and a protruding flat surface that abuts against at least one of these protrusions is provided on the bottom surface of the core, thereby allowing at least one vapor tap hole of a different inner diameter to be formed with one set of molds by selecting at least one of the protrusions and abutting the protruding flat surface to mold it.

[0011] The second aspect of the present invention is a method for manufacturing a housing for an aerosol valve, which has a connection part for a tube for sucking up the contents of an aerosol container at the center of the bottom surface of a main body shaped like a bottomed cylinder, this connection part is connected to the inside of the main body, and a vapor tap hole is provided at an appropriate position of the main body, wherein the vapor tap hole is provided in the vertical direction on the bottom surface of the main body, and the housing can be molded from a set of molds consisting of a combination of a cavity and a core, and a plurality of protrusions having different outer diameters and the same vertical length for forming the vapor tap hole are provided in an annular shape on the bottom surface of the core, and a protruding flat surface that abuts against at least one of these protrusions is provided on the upper surface of the annular intermediate step inside the cavity, thereby allowing at least one vapor tap hole of a different inner diameter to be formed with one set of molds by selecting at least one of the protrusions and molding it by abutting it against the protruding flat surface.

[0012] The third aspect of the present invention is a method for manufacturing a housing for an aerosol valve, characterized in that in the first invention above, five grooves are provided in the radial and vertical directions on the bottom and inner circumferential surfaces of the core, so that five ribs are provided in the radial and vertical directions at equal circumferential intervals on the bottom and inner circumferential surfaces of the inner surface of the housing main body, and the protruding flat surface is provided on at least one bottom surface portion sandwiched between these grooves.

[0013] The fourth aspect of the present invention is a manufacturing method for a housing for an aerosol valve, characterized in that in the second invention above, five grooves are provided in the radial and vertical directions on the bottom and inner circumferential surfaces of the core to provide five ribs at equal circumferential intervals on the bottom and inner circumferential surfaces of the inner surface of the housing main body, and the protruding flat surface is provided on at least one of the annular intermediate steps on the cavity side sandwiched between these grooves.

[0014] The fifth aspect of the present invention is a method for manufacturing a housing for an aerosol valve, characterized in that, in the third invention above, radial groove portions are provided radially on the upper surface of the annular intermediate stage of the cavity at positions corresponding to the groove portions of the core, and these radial groove portions can form radial protrusions on the outer surface of the bottom surface of the housing main body, and four of the protrusions having different outer diameters are provided on four faces of the annular intermediate stage divided into five by the radial groove portions, and the remaining face is formed as a flat surface without any protrusions.

[0015] A sixth aspect of the present invention is a method for manufacturing a housing for an aerosol valve as described in claim 4, characterized in that, in the fourth invention above, radial grooves are provided radially on the upper surface of the annular intermediate step portion of the cavity at positions corresponding to the grooves of the core, and these radial grooves can form radial protrusions on the outer bottom surface of the housing main body, and the bottom surface of the core is divided into five parts by the grooves of the core and has the protrusions provided on four faces thereof, with the remaining face being formed as a flat surface without any protrusions.

[0016] The seventh aspect of the present invention is a method for manufacturing a housing for an aerosol valve, characterized in that, in any of the above inventions, a positioning engagement pin or engagement hole is provided on a base to which the core is fixed, and an engagement hole or engagement pin which engages with the engagement pin or engagement hole is provided on the upper end surface of the core, so that the core can be positioned so as to abut or face either the protruding flat surface or protrusion of the core or the protruding flat surface of the cavity.

[0017] The eighth aspect of the present invention is a housing for an aerosol valve, manufactured by any one of the first to seventh manufacturing methods described above, characterized in that a vapor tap hole is provided in the vertical direction on the bottom surface of the housing main body. Effect of the Invention

[0018] In the first aspect of the present invention, since the vapor tap holes are provided in the vertical direction on the bottom surface of the housing body, the slide pin used in the conventional technology is not required. Therefore, the space required for one set of molds can be reduced.

[0019] In addition, multiple protrusions of the same height and different outer diameters are provided on the upper surface of the intermediate step inside the cavity for forming vapor tap holes, and a protruding flat surface that abuts one of these protrusions is provided on the bottom surface of the core.Therefore, by selecting one of the protrusions and abutting it with the protruding flat surface to mold it, it is possible to form a housing having vapor tap holes of different inner diameters using one set of molds.

[0020] In other words, a housing can be molded having a vapor tap hole with an inner diameter the same as the outer diameter of the protrusion by abutting one of the multiple protrusions of different outer diameters on the cavity side against a protruding flat surface on the core side, and a housing can be molded having a vapor tap hole of another different inner diameter by abutting another protrusion of a different outer diameter against a protruding flat surface.

[0021] In other words, using a mold having one combination of cavity and core, it is possible to mold a number of housings each having vapor tap holes with different inner diameters equal to the number of protrusions with different outer diameters provided on the cavity side.

[0022] Furthermore, by appropriately changing the number of combinations of the protrusions and the protruding flat surfaces, two or more different vapor tap holes can be easily formed by combining one set of molds.

[0023] The second invention is characterized in that, unlike the first invention described above, a plurality of protrusions for forming vapor tap holes are provided in an annular shape on the bottom surface side of the core, and a protruding flat surface that abuts at least one of the protrusions is provided on the upper surface side of the annular intermediate step inside the cavity, and the effect is the same as that of the first invention described above.

[0024] In the third aspect of the present invention, in the first aspect described above, in order to provide five ribs in the radial and vertical directions at equal circumferential intervals on the bottom and inner peripheral surfaces of the inner surface of the housing main body, five groove portions are provided in the radial and vertical directions on the bottom and outer peripheral surfaces of the core, and the protruding plane is provided on at least one bottom surface portion sandwiched between these groove portions.

[0025] Specifically, this allows the bottom surface of the core to be divided into five parts, one of which can be provided with a protruding flat surface, and correspondingly, an appropriate number of protrusions can be provided on the cavity side, making it possible to mold a housing with vapor tap holes of up to five different inner diameters.

[0026] In the fourth invention, contrary to the third invention, five grooves are provided in the radial and vertical directions on the bottom and inner peripheral surfaces of the core in order to provide five ribs at equal circumferential intervals on the inner surface of the housing body, and the protruding plane is provided on at least one of the annular intermediate steps on the cavity side sandwiched between these grooves.

[0027] Specifically, this divides the bottom surface of the core into five parts, and by providing the protruding flat surface on at least one of the annular intermediate step portions on the cavity side sandwiched between these groove portions, it is possible to mold a housing having vapor tap holes of different inner diameters, as in the third invention described above.

[0028] In the fifth aspect of the present invention, radial groove portions are provided radially on the upper surface of the intermediate step portion of the cavity at a position corresponding to the groove portion of the core, and these radial groove portions can form radial protrusion portions on the bottom surface of the housing main body.Therefore, even if a suction tube (dip tube) is fitted up to its base into the connection portion provided in the center of the bottom surface of the housing main body, the vapor tap hole will not be blocked by the end of the tube.

[0029] In addition, by providing four protrusions of different outer diameters on the four faces of the intermediate stage divided into five faces by the radial groove portion, and forming the remaining face as a plane facing the protruding plane of the core at a predetermined distance, it is possible to mold a housing having vapor tap holes of four different inner diameters, and it is also possible to mold a housing without a vapor tap hole.

[0030] The sixth aspect of the present invention exerts the same effect as the fifth aspect of the invention, but corresponds to the second aspect of the invention in that the protrusion and the protruding flat surface are arranged upside down.

[0031] In the seventh aspect of the present invention, a positioning engagement pin or engagement hole is provided on a base to fix the core, and an engagement hole or engagement pin which engages with the engagement pin or engagement hole is provided on the upper end surface of the core, so that the core can be positioned so as to abut or face either the protruding flat surface or protrusion of the core or the protruding flat surface of the cavity.

[0032] In other words, the position of the protruding plane of the core needs to be determined to match the number of protrusions provided in the cavity. For example, if there are five protrusions, it is necessary to provide engagement pins and engagement holes so that the protruding plane can be positioned so that the position of the core can be rotated in 1 / 5ths of 360 degrees.

[0033] The eighth aspect of the present invention specifies a housing for an aerosol valve itself, which is manufactured by any one of the manufacturing methods described in the first to seventh aspects above and has a vapor tap hole provided in the vertical direction on the bottom surface of the housing main body. [Brief description of the drawings]

[0034] [Figure 1] 1 shows a longitudinal cross-sectional view of an aerosol valve using a housing manufactured by the manufacturing method for an aerosol valve housing according to the present invention. [Diagram 2] 1A shows a housing for the aerosol valve, in which (A) is a plan view, (B) is a central vertical cross-sectional view, and (C) is a bottom view. [Diagram 3] FIG. 2 is a half-cut perspective view of the housing for the aerosol valve. [Figure 4] FIG. 2 is a perspective view illustrating a set of molds for manufacturing the above-mentioned aerosol valve housing, in which (A) shows a part of the cavity and (B) shows the core. [Diagram 5] 1A and 1B are conceptual explanatory diagrams showing the combined state of the cavity and the core, in which (A) shows the state where the two are separated, and (B) shows the state where the two are combined. [Figure 6] 1 is a plan view of a housing for conceptually understanding the positional relationship between a cavity and a core in a method of forming a vapor tap hole according to the present invention. FIG. [Figure 7] 1A and 1B are diagrams illustrating a conventional housing for an aerosol valve, in which (A) is a plan view and (B) is a central longitudinal sectional view of (A). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a vertical cross-sectional view of an aerosol valve using a housing manufactured by the manufacturing method for an aerosol valve housing according to the present invention.

[0036] The aerosol valve 1 is located in the center of a mountain cup 2 at the upper end of an aerosol container (not shown), and a valve stem 11 is fitted from above into the interior of a roughly cylindrical housing 10. The valve stem 11 is biased upward by a coil spring 12 and reciprocates up and down within the internal space of the housing 10.

[0037] A cylindrical connecting portion 10s is provided in the center of the bottom surface of the main body portion 10b of the housing 10, and the upper end portion of a dip tube 19 that sucks up the contents of the aerosol container is connected to this connecting portion 10s. A passage 10t is formed at the top of the connection portion 10s and communicates with the internal space of the housing body portion 10b.

[0038] An orifice 11h consisting of a horizontal hole is provided in the approximate center of the valve stem 11, and this orifice 11h is sealed by a stem rubber 11r when the aerosol valve 1 is not in use. A vapor tap hole 15, which is a characteristic feature of the present invention, is provided in the bottom surface of the main body portion 10b of the housing 10. The present invention is directed to a method for forming the vapor tap hole 15.

[0039] FIG. 2 shows a housing for the aerosol valve, where (A) is a plan view, (B) is a central vertical cross-sectional view, and (C) is a bottom view. FIG. 3 is a half-cut perspective view of the housing for the aerosol valve. These figures provide a good view of the structure of the housing according to the present invention.

[0040] The present invention provides a method for manufacturing a housing for an aerosol valve having vapor tap holes in the vertical direction of the bottom surface portion 10h by injection molding using one set of molds. The characteristic portion of the housing formed by this manufacturing method is the bottom surface 10h of the main body 10b of the housing 10.

[0041] First, the housing 10 has a generally cylindrical shape, and a passage 10t is provided in the center of the bottom surface of the main body portion 10b, and a cylindrical connection portion 10s extends downward so as to surround this passage 10t. A recess 13 is provided in the center of the inside of the bottom surface portion 10h, and the passage 10t is located in the center of this recess 13. Five protrusions 14 are formed radially at substantially the same angle from the periphery of this recess 13 to the peripheral wall portion, and extend upward on the peripheral wall portion.

[0042] The bottom surfaces of these protrusions 14 are formed at the same height, and this portion comes into contact with the lower end of the coil spring 12 (see FIG. 1). On the other hand, the upper end of this coil spring abuts against a step provided on the lower end side of the valve stem (see FIG. 1).

[0043] A vapor tap hole 15 is formed at one location on the bottom surface portion 10h between the five protrusions 14. More specifically, a vapor tap hole 15 is provided in a recess outside the area between the two protrusions 14,14. As will be explained later, this vapor tap hole 15 is formed by combining a set of a cavity and a core.

[0044] In the bottom view of FIG. 2(C) above, the areas indicated by grey circles are not through-holes but recesses 15' formed by other protrusions of different outer diameters provided on the cavity side of the mold. As will be described later, these recesses 15' are formed as through holes by rotating the core so that the projecting flat surfaces on the core side come into contact with different protrusions in different cavities.

[0045] FIG. 4 is a perspective explanatory view illustrating a set of molds for manufacturing the above-mentioned aerosol valve housing, in which (A) shows the core and (B) shows a part of the cavity. In FIG. 1B, which shows the cavity, a portion of the upper peripheral wall is cut away so that the structure of the inner bottom surface can be seen.

[0046] The cavity 20 forms the shape of the outer periphery of the housing body 10b and the connecting portion 10s at its lower end. The core 30 forms the shape of the inner periphery of the housing body 10b. An annular recess 21 in the center of the cavity 20 forms the connecting portion 10s at the lower end of the housing. A protruding portion 22 at the center of the annular recess 21 forms an internal space of the cylindrical connecting portion 10s. A protrusion 23 on the upper end surface of this protrusion 22 forms a passage 10t provided at the upper end of the connection portion 10s.

[0047] An intermediate step portion 25 is formed in the approximate vertical middle of the internal space of the cavity 20, and this intermediate step portion 25 forms the bottom surface of the housing main body portion 10b. The intermediate step portion 25 is formed with five radial grooves 26 each having the same central angle. Therefore, the intermediate step portion 25 is divided into five surfaces by the groove portions 26. The number of grooves is merely an example, and the design can be changed to less than five or more than five.

[0048] The grooves 26 form radial protrusions on the bottom side of the bottom surface of the housing body 10b. The four faces of the intermediate step portion 25 are provided with protrusions 27 having different outer diameters, and the remaining intermediate step portions 25 are formed simply as flat surfaces without any protrusions. As a result, as will be described later, the protrusion 27 cooperates with the core 30 to form a vapor tap hole 15 in the bottom surface 10h of the housing body 10b.

[0049] In the core 30 shown in FIG. 1(A), a cylindrical protrusion 31 formed at the lower end of the center portion thereof abuts against the protrusion 23 of the cavity 20 to form a passage 10t. Five grooves 33 are provided radially around the cylindrical protrusion 31 with the same central angle.

[0050] These grooves 33 are formed from the bottom surface of the core to the peripheral wall surface, and are provided so as to correspond to the positions of the radial grooves 26 of the cavity 20. The five radially arranged grooves 33 divide the bottom surface 35 of the core 30 into five surfaces.

[0051] The outer periphery of one of the bottom surface portions 35 , that is, a bottom surface 35 a , is caused to protrude downward to form a protruding flat surface 37 . The vapor tap hole 15 is formed by the protruding flat surface 37 coming into contact with the protrusion 27 provided on the intermediate step portion 25 of the cavity 20 .

[0052] Therefore, by positioning the protruding plane 37 of the core 30 so that it abuts against any of the protrusions 27 provided on the intermediate step 25 of the cavity 20, and then combining and fixing the cavity 20 and the core 30, it is possible to mold a housing having a vapor tap hole 15 with the desired inner diameter.

[0053] FIG. 5 is a conceptual explanatory diagram showing the combined state of the cavity and the core, in which (A) shows the two in a separated state, and (B) shows the two in a combined state. These figures provide a good understanding of the method for forming the vapor tap hole 15 according to the present invention.

[0054] In other words, a downward protruding flat surface 37 on the bottom surface 35 of the core 30 abuts against one of the protrusions 27 provided on the intermediate step 25 of the cavity 20, thereby forming a vapor tap hole 15 in the vertical direction on the bottom surface 10h of the housing main body 10b.

[0055] Furthermore, by abutting the above-mentioned protruding plane 27 against another protrusion 27 having a different outer diameter, a vapor tap hole 15 of a different inner diameter can be formed, and by facing it against a surface of the intermediate step portion 25 of the cavity 20 on which no protrusion is formed, the housing 10 can be formed without providing a vapor tap hole 15.

[0056] FIG. 6 is an explanatory plan view of a housing for conceptually understanding the positional relationship between a cavity and a core in a method for forming a vapor tap hole according to the present invention. In these five figures, the die reference numbers used in Figs. 4 and 5 will be used for explanation. These five plan view diagrams show that vapor tap holes of different inner diameters are formed by rotating the position of the core by an angle of 1 / 5 of 360 degrees and abutting the protruding flat surface 37 of the core against one of four protrusions 27 of different outer diameters provided on the intermediate step 25 of the cavity (left vertical column 4 diagram).

[0057] In addition, a housing without a vapor tap hole can be molded by facing the protruding flat surface 37 of the core 30 to one surface of the intermediate step portion 25 of the cavity that does not have a protrusion portion 27 (top right side view).

[0058] In this way, according to the method of the present invention, by combining a set of cavities and cores in different ways, in other words, by rotating the core 30 around its central axis by 1 / 5 of 360 degrees each and combining the two, it is possible to mold a housing having four different vapor tap holes and a housing having no vapor tap holes.

[0059] It should be noted that the above embodiment is merely an example of the present invention, and not only one vapor tap hole but also two or more vapor tap holes with the same outer diameter or two or more vapor tap holes with different outer diameters can be formed simultaneously. This is possible by changing the outer diameter of the protrusion 27 and by changing the number of the protruding flat surfaces 37 to two or more.

[0060] Regarding the positioning of the core relative to the cavity, by providing an engagement pin or hole on either the core or the core base, and providing an engagement hole or pin on the other, and engaging them with each other, for example, in the above embodiment, by providing these at positions that are 1 / 5 of 360 degrees apart, positioning can be easily performed. Conventional methods can be used for this purpose.

[0061] The manufacturing method according to the present invention has been described above, but the present invention can be modified in design as follows.

[0062] First, in the above embodiment, a protrusion for forming a vapor tap hole is provided on the cavity side, and a protruding flat surface that abuts this protrusion is provided on the bottom side of the core, but it is also easily possible to reverse this and provide a protrusion on the bottom side of the core and a protruding flat surface on the middle step of the cavity.

[0063] The number of protrusions, including the portion where no protrusions are provided, and the number of corresponding protruding flat surfaces can be appropriately changed in design as required. This allows the number of vapor tap holes to be designed from zero to any desired number. Similarly, by changing the outer diameter size of the protrusion, a vapor tap hole of a desired outer diameter can be formed.

[0064] In the above embodiment, the groove portion 33 of the core and the groove portion 26 of the cavity are divided into five parts in the circumferential direction, but this is also just one example, and it is entirely free to divide them into less than five parts or more than five parts.

[0065] The shape and size of each part of the mold consisting of a set of cavity and core can be appropriately changed in design to fit the desired shape of the housing.

[0066] As described above, the number of protrusions can be changed as needed. The outer diameter and height of the protrusions can also be set as needed. It is also possible to provide protrusions on all of the divided faces of the intermediate step portion of the cavity or the bottom surface portion of the core.

[0067] The protruding height of the protruding flat surface provided on the bottom surface of the core or the intermediate step portion of the cavity can also be set appropriately. What is essential is that the vapor tap hole can be formed by bringing the protruding flat surface into contact with the protrusion that abuts against it.

[0068] As described above, the manufacturing method of the present invention provides a method for manufacturing a housing for an aerosol valve having vapor tap holes with a plurality of different inner diameters, using a single mold set of a cavity and a core, without using a lateral slide pin as in the conventional method. [Explanation of symbols]

[0069] 1 Aerosol valve 10. Housing 10b Main body 10h Bottom part 10s Connection 10t aisle 11 Valve stem 11h Orifice 11r Stem Rubber 12 Coil spring 13 Recess 14 Projection part 15 Vapor tap hole 19 Dip tube 20 Cavity 21 Circular recess 22 Protrusion 23 Protrusion 25 Intermediate stage 26 Grooves 27 Protrusion 30 cores 31 Cylindrical protrusion 33 Grooves 35 Bottom part 37 Protruding plane

Claims

1. A method for manufacturing a housing for an aerosol valve, the housing having a bottomed cylindrical body, a connection part for a tube for sucking up the contents of an aerosol container, the connection part communicating with the inside of the body, and a vapor tap hole provided at an appropriate position of the body, comprising: The vapor tap hole is provided in the bottom surface of the main body in the vertical direction, and the housing can be molded from a set of dies consisting of a combination of a cavity and a core. a plurality of protrusions having different outer diameters and the same height for forming the vapor tap hole are provided on the upper surface of the annular intermediate step portion inside the cavity; On the other hand, a protruding flat surface that abuts against at least one of the protrusions is provided on the bottom surface of the core, This method of manufacturing a housing for an aerosol valve is characterized in that by selecting at least one of the protrusions and abutting the protruding flat surface to form at least one vapor tap hole of a different inner diameter with one set of molds.

2. A method for manufacturing a housing for an aerosol valve, the housing having a bottomed cylindrical body, a connection part for a tube for sucking up the contents of an aerosol container, the connection part communicating with the inside of the body, and a vapor tap hole provided at an appropriate position of the body, comprising: The vapor tap hole is provided in the bottom surface of the main body in the vertical direction, and the housing can be molded from a set of dies consisting of a combination of a cavity and a core. a plurality of protrusions having different outer diameters and the same vertical length for forming the vapor tap hole are provided in an annular shape on the bottom surface of the core; On the other hand, a protruding flat surface that abuts against at least one of the protrusions is provided on an upper surface of the annular intermediate step portion inside the cavity, This method of manufacturing a housing for an aerosol valve is characterized in that by selecting at least one of the protrusions and abutting it against the protruding flat surface to form at least one vapor tap hole of a different inner diameter with one set of molds.

3. In order to provide five ribs in the radial direction and the vertical direction at equal intervals in the circumferential direction on the bottom surface and the inner circumferential surface of the inner surface of the main body, five groove portions are provided in the radial direction and the vertical direction on the bottom surface and the outer circumferential surface of the core, 2. The method of claim 1, wherein the protruding flat surface is provided on at least one bottom surface portion sandwiched between the groove portions.

4. In order to provide five ribs in the radial direction and the vertical direction at equal intervals in the circumferential direction on the bottom surface and the inner circumferential surface of the inner surface of the main body, five groove portions are provided in the radial direction and the vertical direction on the bottom surface and the outer circumferential surface of the core, 3. The method of claim 2, wherein the protruding flat surface is provided on at least one of the annular intermediate steps on the cavity side between the grooves.

5. Radial grooves can be provided on the upper surface of the annular intermediate step of the cavity at positions corresponding to the grooves of the core, and these radial grooves can form radial protrusions on the bottom outer surface of the main body.

4. The method of manufacturing a housing for an aerosol valve according to claim 3, wherein the annular intermediate step portion is divided into five parts by the radial grooves, and four of the protrusions having different outer diameters are provided on four faces of the annular intermediate step portion, and the remaining face is formed as a flat surface without any protrusions.

6. Radial grooves can be provided on the upper surface of the annular intermediate step of the cavity at positions corresponding to the grooves of the core, and these radial grooves can form radial protrusions on the bottom outer surface of the main body.

5. The method of claim 4, wherein the protrusions are provided on four faces of the bottom surface of the core which is divided into five parts by the grooves of the core, and the remaining face is formed as a flat surface without any protrusions.

7. A method for manufacturing a housing for an aerosol valve as described in any one of claims 1 to 6, characterized in that a positioning engagement pin or engagement hole is provided on a base to which the core is fixed, and an engagement hole or engagement pin that engages with the engagement pin or engagement hole is provided on the upper end surface of the core, so that the core can be positioned so as to abut or face either the protruding flat surface or protrusion of the core or the protruding flat surface of the cavity.

8. A mold for use in manufacturing a housing for an aerosol valve, the mold having a bottomed cylindrical body having a connection part for a tube for sucking up the contents of an aerosol container at the center of the bottom surface thereof, the connection part communicating with the inside of the body, and a vapor tap hole provided at an appropriate position of the body, the die includes a cavity for molding an outer circumferential portion of the main body portion and the connection portion, and a core for molding an inner circumferential portion of the main body portion; The cavity has a plurality of protrusions of different outer diameters and the same height on the upper surface of the inner annular intermediate step portion for forming the vapor tap hole, and the core has a protruding flat surface on the bottom surface portion that abuts against at least one of the plurality of protrusions, or The mold is characterized in that the cavity has a protruding plane on the upper surface of an internal annular intermediate step portion that abuts at least one of the multiple protrusions, and the core has a plurality of protrusions arranged annularly on the bottom surface portion, the protrusions having different outer diameters and the same vertical length for forming the vapor tap hole.

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