JP5306778B2 - Soap mold, manufacturing apparatus and manufacturing method - Google Patents

Description

  The present invention relates to a soap mold, a manufacturing apparatus, and a manufacturing method.

  2. Description of the Related Art Conventionally, there is known a soap manufacturing apparatus including a mold having a cavity having a predetermined shape and a supply path for molten soap that leads to the cavity. The applicant of the present invention relates to an improvement technique for such a manufacturing apparatus, and at the time when filling of the molten soap into the mold is completed, the soap that does not remain or remain in the supply path of the mold. A manufacturing apparatus has been proposed previously (see, for example, Patent Documents 1 and 2).

  FIG. 11 schematically shows a main part of one embodiment of the manufacturing apparatus. The manufacturing apparatus shown in FIG. 11 includes a mold 50 formed by assembling a set of split molds, and an injection device (not shown) for injecting molten soap into the mold 50. , A cavity 51 having a predetermined shape and a supply path 52 of molten soap communicating with the cavity 51 are provided. The supply path 52 includes a molten soap supply hole (spool) 53 and a gate (runner) 54, and a gate pin 55 that blocks communication between the supply hole 53 and the cavity 51 is disposed in the gate 54 so as to be able to advance and retreat. . In the manufacturing apparatus 50 having such a configuration, as shown in FIG. 11, when the injection of a predetermined amount of molten soap into the cavity 51 is completed, the cylinder 56 is operated to push the piston 57 into the cavity 51. The molten soap remaining in the gate 54 is injected into the cavity 51 by causing the gate pin 55 connected to 57 to enter the gate 54. This prevents the molten soap from staying or remaining in the supply path 52 at the time when filling of the molten soap into the mold 50 is completed. Therefore, prior to the next molding, It is not necessary to remove the soap that has solidified with, so that the productivity increases and a homogeneous soap can be obtained.

  However, the above-described manufacturing method of the gate pin method has a problem in that, when it is attempted to manufacture a plurality of soaps at a time by using a plurality of cavities in the mold for the purpose of increasing productivity, the size of the apparatus is increased. There is. That is, in the gate pin type manufacturing method, a sliding device for sliding the gate pin in the gate, such as the cylinder 56 and the piston 57, is necessary. Since a plurality of sliding devices corresponding to the gate pins of the respective cavities are necessary, the size of the molding die and the size of the manufacturing device are likely to increase. When the mold or the manufacturing apparatus is increased in size, the weight is considerably increased, which causes inconveniences such as difficulty in securing an installation space.

  Further, as described above, the soap obtained by the gate pin type manufacturing method is subjected to a step of injecting molten soap remaining in the gate into the cavity by the gate pin after completion of injection of the predetermined amount of molten soap into the cavity. Since it is manufactured, stains due to distortion, wear on the inner surface of the gate, and the like are likely to occur particularly in a portion of the soap located around the gate, and there is room for improvement in terms of quality.

JP 2006-89650 A JP 2006-176646 A

  Accordingly, an object of the present invention is to provide a soap mold, a manufacturing apparatus, and a manufacturing method capable of efficiently manufacturing a high-quality soap with less distortion and dirt without causing an increase in size of the manufacturing apparatus. .

  The present invention is a soap mold in which a set of split molds are assembled and a plurality of molding cavities are formed therein, and in the state where the set of split molds are assembled, the plurality of cavities include the The molten soap is arranged so as to form a line at a predetermined interval in the vertical direction of the mold, and a supply path for the molten soap is provided below each of the plurality of cavities, and the molten soap is supplied to the supply path. Through which the cavity is filled upward from the lower portion of the cavity, and the supply path includes a runner extending downward from the lower portion of the cavity, and the set of split molds orthogonal to the runner. The object is achieved by providing a soap mold having a spool extending in the assembling direction when assembling.

  Moreover, this invention achieves the said objective by providing the manufacturing apparatus of the soap provided with the said shaping | molding die and the injection apparatus which inject | pours molten soap into the said cavity of this shaping | molding die.

  Further, the present invention is a method for producing soap using the mold, comprising a step of filling each of the plurality of cavities with molten soap through the supply path and solidifying the molten soap. The object is achieved by providing a method for producing a soap having such a pressure of 0.2 MPa or less.

  According to the present invention, it is possible to efficiently produce a high-quality soap with less distortion and dirt without causing an increase in the size of the production apparatus.

  Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. The principal part of one Embodiment of the soap manufacturing apparatus of this invention provided with the shaping | molding die of the soap of this invention is shown by FIG. A manufacturing apparatus 5 according to this embodiment shown in FIG. 1 includes a mold 1, a mold unit 2 that opens and closes the mold 1, an injection apparatus 3 that injects molten soap into the inside (cavity) of the mold 1, and And a molten soap circulation device 4 (see FIG. 4). The manufacturing apparatus 5 of the present embodiment is suitably used for manufacturing bubble soap.

  As shown in FIG. 2, the mold 1 is composed of a pair of split mold 1A and split mold 1B. Each split mold has a rectangular block shape made of a rigid body such as a metal, and a plurality of concave cavity forming surfaces 11A and 11B are formed on each parting surface PL. The formation surfaces (hereinafter also referred to as “cavity formation surfaces”) 11A and 11B of the cavities are manufactured as shown in FIG. 3 when the split mold 1A and the split mold 1B are combined with their parting surfaces PL. A plurality of cavities 10 (12 in this embodiment) having a shape matching the shape of the soap should be formed.

  The plurality of cavity forming surfaces 11 </ b> A are arranged in a row at predetermined intervals in the vertical direction X of the mold and the horizontal direction Y orthogonal to the vertical direction X. In the present embodiment, the rows formed by arranging the two cavity forming surfaces 11A along the vertical direction X are arranged in parallel in six rows at a predetermined interval in the left-right direction Y. A plurality of cavity forming surfaces 11B are also arranged in the same manner. Therefore, in the state where the split mold 1A and the split mold 1B are assembled with their parting surfaces PL as shown in FIG. 3, a plurality (12) of cavities are provided at predetermined intervals in the vertical direction X and the horizontal direction Y, respectively. Are arranged to form a line.

  As shown in FIG. 3, in the state where the split molds 1 </ b> A and 1 </ b> B are assembled, a melt soap supply path 12 that leads to the cavities 10 is disposed below each of the cavities 10. The supply path 12 includes a runner 12A extending downward from the lower portion of the cavity 10 and a spool 12B orthogonal to the runner 12A and extending in the assembly direction Z when the split molds 1A and 1B are assembled. It is substantially L-shaped in a side view. The runner 12 </ b> A extends substantially vertically from the lowermost part (bottom part) of the cavity 10 to the vicinity of the lower end of the mold 1. The spool 12B extends substantially horizontally from the lower end of the runner 12A to the outer surface of the mold 1 (the back surface of the split mold 1B). As will be described later, the molten soap is filled upward from the lower portion of the cavity 10 through the supply path 12 including the runner 12A and the spool 12B.

  As shown in FIG. 2, the runner 12A is formed by cutting out part of the parting surface PL of the split mold 1A. The runner 12A has a cross-sectional shape in which a part of a circle is cut out along the parting surface PL, and the diameter thereof is substantially constant over the entire length of the runner 12A. One end (upper end) of the runner 12A is opened at the cavity forming surface 11A, and the other end (lower end) is closed. The spool 12B is formed by drilling a through-hole penetrating the split mold 1B in the thickness direction at a predetermined portion of the split mold 1B. The diameter of the spool 12B is gradually reduced toward the back side of the split mold 1B.

  As shown in FIG. 3, when the split mold 1A on which the runner 12A is formed is viewed from the back side opposite to the parting surface, the portion corresponding to the runner 12A (runner forming surface) A slit 13 having a minute width reaching the runner 12A from the back is formed. In the present embodiment, the slit 13 is formed not only in the portion corresponding to the runner 12A but also in the portion corresponding to the cavity 10 (cavity forming surfaces 11A and 11B). The plurality of slits 13 in the split mold 1A extend substantially horizontally from the cavity forming surface 11A or the runner forming surface to the back surface of the split mold 1A. The plurality of slits 13 in the split mold 1B extend substantially horizontally from the cavity forming surface 11B to the back surface of the split mold 1B. As will be described later, the slit 13 is used when the mold 1 is opened after the molten soap is solidified in the mold 1 to form a solid soap. Used for suction and air blowing. The width of the slit 13 is preferably 10 to 100 μm.

  An air vent (not shown) is provided on the parting surface PL of the split mold 1A at a position facing the runner 12A through at least the cavity forming surface 11A. The air vent functions as a deaeration hole for discharging the air in the cavity to the outside when the cavity is filled with molten soap. The air vent is not limited to the split mold 1A, but can be installed in the split mold 1B, or can be installed in the split molds 1A and 1B. Although not shown in the drawing, a cooling water circulation path is provided in the blocks constituting the split molds 1A and 1B.

  The mold 1 is attached to the mold unit 2. Specifically, the lower part of the split mold 1 </ b> B in the mold 1 is attached to a support plate 21 erected from the base plate 20 and is a fixed mold. On the other hand, the back surface of the split mold 1A is attached to a movable plate 24 connected to the servo motor 22 via a feed screw 23. The servo motor 22 is attached to a support plate 25 erected from the base plate 20 so that the feed screw 23 slides in a direction orthogonal to the movable plate 24. Therefore, the split mold 1A is a movable type that can move in the horizontal direction. The mold 1 is fixed so that each supply path 12 is positioned below each cavity 10. As a result, the molten soap is filled upward from the bottom of the cavity 10.

  A servo motor 22 for clamping the mold 1 and controlling the pressure of the cavity 10 is electrically connected to a control device (not shown). The numerical control device stores a CPU such as a microcomputer that substantially controls the entire manufacturing apparatus 5 including the servo motor 22, and necessary fixed information such as a control program executed by the CPU and various data. A ROM, a RAM used as a work area at the time of execution of processing by the CPU, an operator input device for the numerical control device, and the like are provided.

  On the back side of the split mold 1B, a molten soap injection device 3 is arranged as shown in FIG. The injection device 3 includes a plurality (12 in this embodiment) of molten soap injection portions 39 corresponding to the plurality of supply paths 12 respectively. The plurality of injection portions 39 are arranged in a row at predetermined intervals in the vertical direction X and the horizontal direction Y of the mold 1, and a plurality (12) of the split mold 1 </ b> B constituting the mold 1. 1 corresponds to the opening of the spool 12B.

  Each of the plurality of injection units 39 includes a supply pipe 30 having one end connected to a circulation pipe 42 of the circulation device 4 described later. The other end of the supply pipe 30 is a molten soap liquid reservoir 31, and an injection nozzle 32 projects from the liquid reservoir 31. In the nozzle 32, a push-in plug 33 having the same outer shape as the inner shape of the nozzle 32 is disposed. The plug 33 is advanced and retracted in the nozzle 32 by an air cylinder 38 attached to the rear end thereof. As the plug 33 moves backward, a gap is formed between the nozzle 32 and the plug 33, and the molten soap is supplied to the mold 1 through this gap. On the other hand, when the plug 33 moves forward, the nozzle 32 and the plug 33 are fitted together, there is no gap between them, and the supply of molten soap is stopped. That is, as the plug 33 advances and retreats, the molten soap is supplied and the supply is blocked.

  A cylinder 34 and a piston 36 as an example of a constant capacity supply device are attached to a position upstream of the injection nozzle 32 in the supply pipe 30 with respect to the flowing direction of the molten soap (the direction indicated by the arrow A in FIG. 1). Yes. The cylinder 34 is provided so as to intersect with the supply pipe 30. A switching rotary valve 35 is disposed in the cylinder 34 to selectively communicate the upstream or downstream side of the supply pipe 30 with the cylinder 34 with the cylinder 34 as a boundary. At the same time, a piston 36 is arranged in the cylinder 34 so as to be able to advance and retreat in the cylinder. The cylinder 34 and the piston 36 constitute a constant capacity supply device for molten soap. The advance / retreat of the piston 36 is precisely controlled by a servo motor 37 attached to the rear end thereof. As the piston 36 moves backward, a space for accommodating the molten soap is formed in the cylinder 34. After this space is filled with molten soap, the piston 36 is pushed into the cavity 10 so that the molten soap is filled under pressure. The supply volume of the molten soap to the cavity 10 is determined by the retraction distance or the push-in distance of the piston 36. Specifically, 1) a method of determining the supply volume based on the retreat distance of the piston 36 with the position of the piston 36 before retreat as the origin, or 2) supply with the push-in distance of the piston 36 with the position of the piston 36 after retreat as the origin There is a way to determine the volume. When the molten soap to be measured is bubbled, this is a compressible fluid. Therefore, in the method 1), the origin is set so that the molten soap does not remain in the cylinder 34 as much as possible at the origin of the piston 36. It is preferable from the viewpoint of increasing the accuracy of the product weight.

  The plurality of injection portions 39 are attached to a frame body 61 erected from the base plate 60. The base plate 60 is placed and fixed on a slider 63 slidably disposed on a pedestal 62. The slider 63 is connected to a servo motor 64 placed on the pedestal 62 via a feed screw 65, and slides on the pedestal 62 by the operation of the servo motor 64. As a result, the plurality of injection portions 39 can be brought into and out of contact with the mold 1 attached to the mold unit 2.

  As shown in FIG. 4, the molten soap circulation device 4 includes a storage tank 41, a circulation line 42 connected to the storage tank 41 and forming a loop passing through the storage tank 41, and the circulation line 42. A circulation pump 43 interposed in the middle is provided. The storage tank 41 is connected with a supply line 44 of molten soap foamed in a foaming section (not shown). Further, a stirring blade 45 is installed in the storage tank 41. The stirring blade 45 is rotated in a predetermined direction by a motor 46. The circulating pipe 42 is connected to the plurality of molten soap injection parts 39 described above so as to be openable and closable. In FIG. 4, the injection portions 39 are described as being connected in series to the circulation pipe 42, but the connection between them is not necessarily the same. Each of the circulation device 4 including the storage tank 41 and the circulation pipe 42 and the injection unit 39 is provided with a heat retaining device such as warm water and a heater, and is kept at a predetermined temperature.

  A method for producing foamed soap using the production apparatus 5 having the above configuration will be described. First, the circulation of the molten soap by the circulation device 4 will be described with reference to FIG. 4. The molten soap which is foamed in a foaming section (not shown) and contains a myriad of bubbles is dispersed in the storage tank 41 through the supply pipe 44. Stored in. In the storage tank 41, the molten soap is stirred by the stirring blade 45, and the dispersed state of the bubbles is kept uniform. A part of the molten soap is fed into the circulation line 42 by the circulation pump 43. As a result, the molten soap stored in the storage tank 41 circulates in the circulation line 42 via the storage tank 41. By this circulation, even if some trouble occurs and the work of foamed soap production stops, the molten soap does not stagnate in the piping system, and a state in which shearing force is constantly applied to the molten soap is maintained, Air bubbles and liquid are prevented from being separated. In particular, in this embodiment, since the shearing force is applied by circulating the molten soap, there is an advantage that the time for applying the shearing force to the molten soap can be controlled by controlling the flow rate of the molten soap, for example. That is, the state of bubbles can be maintained by continuously applying a shearing force for a long time to a compressible fluid having low storage stability such as molten soap containing bubbles. On the other hand, unless a shearing force is applied, it is inevitable that bubbles are coalesced and gas-liquid separation occurs. In this way, when circulating the molten soap, the shearing force can be effectively applied to the molten soap by controlling the time during which the shearing force is applied. As a result, the bubbles in the bubbled soap in the storage tank 41 can be applied. The dispersion state can be made good, and the good state can be maintained for a long time. Even with stirring by the stirring blade 45 in the storage tank 41, separation of bubbles and liquid components can be prevented to some extent, but it is not sufficient. When the molten soap is stirred so that gas-liquid separation and bubble coalescence do not occur by the stirring blade 45, the molten soap entrains bubbles and the specific gravity thereof fluctuates. Therefore, it is preferable that the storage tank 41 is gently stirred without air bubbles mixed therein, and the separation of the air bubbles and the liquid component is preferably performed by circulation in the circulation line 42.

  As a method for preparing a molten soap containing innumerable bubbles dispersed therein, for example, a method described in the second column, line 15 to column 5, line 1 of Japanese Patent Application Laid-Open No. 11-43699 previously filed by the present applicant. Can be used. Various gases can be used for foaming the molten soap. In particular, the use of inert gas, especially non-oxidizing inert gas such as nitrogen gas, effectively prevents off-flavors, etc. generated by oxidative decomposition of the blended components due to heating of the molten soap. can do. The use of an inert gas for foaming is particularly effective when a perfume component that is easily oxidatively decomposed is blended as a blended component of the soap with foam.

  Before starting the molding, the servo motor 22 of the mold unit 2 is operated to push out the feed screw 23, and the split mold 1A and the split mold 1B are closed as shown in FIG. In the split mold, water is circulated through the cooling water circulation path described above. Further, the injection device 3 is disposed on the back side of the split mold 1B in the mold 1, and the servo motor 64 of the injection device 3 is operated to slide the slider 63, so that a plurality of injection portions are provided as shown in FIG. The tip of the injection nozzle 32 in each of 39 and the openings of each of the plurality of spools 12B in the split mold 1B are connected on a one-to-one basis.

  In the state shown in FIG. 5, the communication between the cylinder 34 and the circulation conduit 42 in each injection portion 39 is blocked by the rotary valve 35. The piston 36 disposed in the cylinder 34 remains in a predetermined position. In this state, as shown in FIG. 6, the push plug 33 in each injection portion 39 is completely inserted into the nozzle 32 so that the molten soap is not supplied.

  Under this state, a part of the molten soap circulating through the circulation pipe 42 is sent to each injection portion 39. In order to send the molten soap to each injection portion 39, the rotary valve 35 is rotated by a predetermined angle to cause the cylinder 34 and the circulation line 42 to communicate with each other. At the same time, the servo motor 37 is operated to retract the piston 36. Thereby, a space is formed in the cylinder 34, and the molten soap flows into the space. The retraction of the piston 36 is continued until a predetermined amount of molten soap is filled in the cylinder 34.

  When a predetermined amount of molten soap is filled in the cylinder 34, the operation of the servo motor 37 is stopped and the backward movement of the piston 36 is stopped. Next, the rotary valve 35 is inverted by a predetermined angle to cut off the communication between the cylinder 34 and the circulation conduit 42 and the cylinder 34 and the nozzle 32 are communicated. Subsequently, the air cylinder 38 is operated to pull out the plug 33 from the nozzle 32, and a gap is formed between them. This state is shown in FIG. As a result, a supply path for molten soap is formed that includes the cylinder 34, the supply pipe 30, the liquid reservoir 31, the nozzle 32, the spool 12 </ b> B, the runner 12 </ b> A and the cavity 10. Under this condition, the servo motor 37 is operated to push the piston 36 in the cylinder 34. Thereby, the molten soap filled in the cylinder 34 is pressurized and injected into the cavity 10 of the mold 1 through the supply path. As described above, the supply amount of the molten soap is determined by the stroke amount of the piston 34, but the stroke amount is precisely controlled by the servo motor 37. Such an operation of pouring molten soap is performed almost simultaneously in each of the plurality of cavities 10. As each of the cavities 10 is filled with the molten soap, the air in the cavities 10 is discharged to the outside from the air vent (not shown) and replaced with the molten soap. In the mold 1, the molten soap is filled upward from the lower part of the cavity 10 through the supply path 12 (runner 12 </ b> A and spool 12 </ b> B), so that the defoaming of the molten soap is performed more reliably.

  In this embodiment, as shown in FIG. 8, the molten soap is filled not only into the cavity 10 but also into the supply path 12 (runner 12A and spool 12B) leading to the cavity 10. Only the molten soap filled in the cavity 10 is finally made into a product, but the injection amount of the molten soap is made larger than the volume of the cavity 10 and the molten soap is filled in the supply path 12 as well. As a result, shrinkage and sink marks are prevented during solidification, and soap distortion and dirt, which have been problems in the manufacturing method of the gate pin method as described in Patent Documents 1 and 2, are prevented. High quality soap will be obtained.

  When injection of a predetermined amount of molten soap into each cavity 10 and each supply path 12 is completed, the push plug 33 in each injection portion 39 is completely inserted into the nozzle 32 again (see FIG. 6). Then, under this state, the molten soap in the mold 1 is cooled and solidified. As described above, the split molds 1A and 1B are cooled to a predetermined temperature by circulating the cooling water, thereby promoting the cooling and solidification of the molten soap in each cavity 10 and each supply passage 12.

  The pressure applied to the molten soap filled in each cavity 10 is not particularly limited, but is preferably 0.2 MPa or less. The pressure is measured, for example, by providing a known pressure sensor in the cavity 10. In general, when the pressure is increased, the solidification rate of the molten soap is increased, so that productivity is improved. However, shrinkage and sink marks are generated when the molten soap is solidified, and a desired shape may not be obtained. Further, depending on the type of soap to be produced, the lower pressure may be preferable. For example, when producing soap with bubbles as in the present embodiment, the soap when the mold is opened after cooling and solidification. It is preferable to adjust the pressure to the above range from the viewpoint of avoiding the explosion.

  When the molten soap is solidified, as shown in FIG. 9, the mold unit 2 is moved backward (moved to the right in FIG. 9), the injection device 3 is removed from the split mold 1B, and the servo motor 22 is operated to feed the screw. 23 is pulled in and the split molds 1A and 1B are opened. At this time, suction is performed through the cavity forming surface 11A of the split mold 1A and the slit 13 (see FIG. 3) formed in the runner forming surface. At the same time, air is blown from the cavity forming surface 11B toward the solid soap S through the slit 13 formed in the cavity forming surface 11B of the split mold 1B, thereby promoting the release of the solid soap S from the cavity forming surface 11B. . By these operations, each solid soap S is held on the cavity forming surface 11A of the split mold 1A and the runner forming surface.

  There is no particular limitation on the time when the mold is opened after cooling and solidification of the molten soap, but at an earlier stage than when the soap is solidified and then the mold is opened, for example, the surface layer of the soap is solidified. However, if the mold is opened while the inside is not solidified, the soap is surely held on the split mold 1A side.

  Subsequently, each solid soap S held in the split mold 1A is taken out by a predetermined gripping means (not shown). At this time, air is blown toward the solid soap S from the cavity forming surface 11A and the runner forming surface through the slits 13 formed in the split mold 1A to promote the release of the solid soap S from the split mold 1A. In this way, a plurality (12 in this embodiment) of the soap bars S can be obtained simultaneously. Thereafter, the split mold 1A and the split mold 1B are closed to return to the state shown in FIG. 5, and the operations described so far are repeated.

  The solid soap S thus taken out from the mold 1 is melted in the portion S1 where the molten soap is solidified in the cavity 10 and in the supply path 12 (runner 12A and spool 12B) as shown in FIG. And a portion S2 where the soap is solidified. On the other hand, in the manufacturing method of the gate pin method as described in Patent Documents 1 and 2, the molten soap in the supply path (gate) has already been pushed into the cavity by the gate pin at the time of starting the cooling and solidification of the molten soap. Therefore, the solid soap taken out from the mold is composed only of the portion S1, and does not include the portion S2. As for the soap obtained by such a gate pin method, due to the extrusion operation of the residual molten soap by the gate pin described above, stains due to distortion, abrasion of the gate inner surface, etc. are present at the site located around the gate (runner). There is a problem that it is likely to occur. In the present embodiment, such a problem in the gate pin system is solved by providing the portion S2 in the solid soap S taken out from the mold 1.

  After the solid soap S is taken out from the mold 1, the boundary between the part S1 and the part S2 is cut by a predetermined cutting means (not shown), and the part S1 is used as a final product. Portion S2 can be recovered and used to make new soap.

  According to the soap manufacturing apparatus 5 of the present embodiment, high-quality soap with bubbles, which is homogeneously molded with less sink, distortion, and dirt, can be manufactured efficiently and at low cost. Moreover, since the manufacturing apparatus 5 of the present embodiment does not include the gate pin and the sliding device that are essential in the conventional manufacturing apparatus, a relatively large number of soaps can be manufactured at one time. Compact and easy to secure installation space.

  Examples of the compounding component constituting the soap with bubbles include fatty acid soap, nonionic surfactant, inorganic salt, polyols, nonsoap anionic surfactant, free fatty acid, fragrance, water and the like. Furthermore, you may mix | blend suitably additives, such as an antibacterial agent, a pigment, dye, oil agent, and a plant extract, as needed.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, the number and arrangement of the plurality of cavities 10 in the mold 1 are not limited to the above embodiment, and can be set as appropriate. In the above embodiment, the slit 13 is formed for sucking the bar soap into one split mold or blowing out air. However, such a slit need not be formed, and instead of the slit 13, Or you may form a microhole in the said cavity formation surface and the said runner formation surface with the slit 13. FIG.

  Moreover, in order to hold solid soap S by one split mold 1A reliably, the surface area of the cavity forming surface 11A in the split mold 1A may be larger than the surface area of the cavity forming surface 11B in the split mold 1B. As a method of providing a difference between the surface areas of the two, for example, a method of making the surface roughness different between the two is mentioned.

  Moreover, although the said embodiment concerns the manufacturing method of bubble soap, it cannot be overemphasized that this invention is applicable similarly to manufacture of soap other than this. However, the present invention is particularly suitable for the production of aerated soap.

FIG. 1 is a schematic diagram showing a mold, a mold unit, and an injection device in an embodiment of the soap production apparatus of the present invention. FIG. 2 is a perspective view schematically showing a mold open state of the mold in the manufacturing apparatus shown in FIG. FIG. 3 is a side view schematically showing a state in which the split mold of the mold shown in FIG. 2 is assembled. FIG. 4 is a schematic diagram showing a circulating apparatus for molten soap in the manufacturing apparatus shown in FIG. FIG. 5 is a schematic diagram showing a state at the start of molding of the manufacturing apparatus shown in FIG. FIG. 6 is an enlarged view of a main part of FIG. FIG. 7 is a view corresponding to FIG. 6 schematically showing a state in which molten soap is poured into the mold. FIG. 8 is a schematic view showing a state in which filling of the molten soap into the mold is completed in the manufacturing apparatus shown in FIG. FIG. 9 is a schematic diagram showing a state where the mold is opened in the manufacturing apparatus shown in FIG. FIG. 10 is a side view schematically showing soap manufactured using the manufacturing apparatus shown in FIG. FIG. 11 is a schematic diagram showing a main part of a conventional soap manufacturing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mold 1A, 1B Split mold 2 Mold unit 3 Injection apparatus 4 Circulation apparatus 5 Manufacturing apparatus 10 Cavity 12 Supply path 12A Runner 12B Spool 13 Slit

Claims (6)

A soap mold in which a set of split molds are assembled to form a plurality of molding cavities inside,
In a state where the set of split molds is assembled, a plurality of the cavities are arranged in a row at a predetermined interval in the vertical direction of the mold, and the cavities are respectively disposed under the cavities. A molten soap supply path leading to the top of the cavity is filled from the bottom of the cavity through the supply path;
The supply path includes a runner extending downward from the lower portion of the cavity, and a spool orthogonal to the runner and extending in an assembly direction when assembling the pair of split molds ;
When the split mold in which the runner is formed is viewed from the back surface located on the side opposite to the parting surface, a slit and / or a minute width that reaches the runner from the back surface in a portion corresponding to the runner. A soap mold with holes .   2. The apparatus according to claim 1, wherein a plurality of the cavities are arranged at predetermined intervals in the up-down direction and in a left-right direction orthogonal to the up-down direction in a state where the set of split molds are assembled. Soap mold. A soap production apparatus comprising: the mold according to claim 1 or 2; and an injection device for injecting molten soap into the cavity of the mold. The injection device includes a plurality of molten soap injection portions corresponding to the plurality of supply paths, and the plurality of injection portions form a row at predetermined intervals in the vertical direction of the molding die. The soap manufacturing apparatus according to claim 3, which is arranged. A method for producing soap using the mold according to claim 1 or 2 ,
A method for producing soap, comprising a step of filling and solidifying each of the plurality of cavities with molten soap through the supply path, and a pressure applied to the molten soap filled in the cavities is 0.2 MPa or less. A step of solidifying the molten soap into a solid soap, then opening the mold and taking out the solid soap; the solid soap removed from the mold is solidified in the supply path The method for producing soap according to claim 5 , comprising a portion that has been made.

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