JP4514574B2 - Valve device - Google Patents

Description

  The present invention relates to a valve device, and more specifically, a mixing device that mixes a plurality of first constituent raw materials constituting a first foamed resin raw material and a plurality of second constituent raw materials constituting a second foamed resin raw material. The present invention relates to a valve device that selectively discharges water.

  For example, soft urethane foam has suitable elasticity and flexibility, and thus is suitably used as a car seat, a cushion material for sofas, mattresses, and the like. And because different physical properties (hardness, elasticity, vibration characteristics, etc.) are required depending on the intended use, it has relatively high density and high impact resilience, and hard characteristics to low density and low impact resilience. There are many types of products with soft and soft characteristics. Such a flexible urethane foam can be obtained by mixing and foaming various constituent raw materials such as a polyol and an isocyanate as main components and a foaming agent, a foam stabilizer and a catalyst at a predetermined ratio, as is well known. Therefore, physical properties such as density and hardness can be changed by changing the types and ratios of these constituent raw materials, and therefore, it is possible to manufacture products having various characteristics. In addition, rigid urethane foam that is used as an impact absorber, etc., and urethane foam that is molded by mechanical flossing methods that do not use foaming agents, can also be improved by changing the types and proportions of multiple constituent materials. It is possible to change.

Here, various urethane foams are molded by a foam molding machine equipped with a mixing device (such as a mixing head) for mixing the above-mentioned various constituent raw materials to produce a foamed resin raw material. However, it is desirable to be able to form a urethane foam having a plurality of characteristics with a single foam molding apparatus. For this reason, the mixing device equipped in the above-described foam molding apparatus is equipped with a so-called “valve device” for selectively discharging a plurality of types of constituent materials or a device equivalent thereto, and this valve device is By controlling, it is possible to produce a plurality of types of foamed resin raw materials. Such a valve device is disclosed in Patent Document 1, for example.
JP 05-84435 A

  The multi-component mixing head disclosed in Patent Document 1 is equivalent to a “valve device” having a total of eight switching valves disposed every 45 ° on the same circumference. Each of these switching valves corresponds to a single constituent raw material such as polyol or isocyanate, and by opening the switching valve, the corresponding constituent raw material is discharged into the mixing chamber to produce a predetermined foamed resin raw material. To get. However, since each of the switching valves is configured to open and close individually and selectively, the mechanism for realizing this is complicated, resulting in an increase in size and complexity of the entire apparatus and an increase in equipment cost. The problem is inherent.

  Also, when changing the foamed resin raw material when molding urethane foam with different characteristics, for the constituent raw materials that are not used in the changed foamed resin raw material, the corresponding switching valve is closed to stop the discharge of the constituent raw materials. It has become. For this reason, the constituent raw material remains in the required length passage provided between the switching valve and the mixing chamber until the constituent raw material is discharged along with the change of the foamed resin raw material again. In order to prevent clogging due to adhering to the substrate, it is necessary to equip a cleaning device (such as a cleaning switching valve or an air cylinder) for removing the constituent raw materials. Therefore, when molding urethane foams with different characteristics, it is necessary to execute the cleaning process by the above-described cleaning device prior to the discharge of the next constituent material, resulting in a loss time due to the addition of extra processes. Problems such as reduced efficiency are also pointed out.

  Accordingly, an object of the present invention is to provide a valve device that suppresses the equipment cost by reducing the size as a simple structure and does not reduce the molding efficiency.

In order to solve the above-mentioned problems and achieve the intended purpose, the present invention provides:
A valve device for selectively discharging a plurality of first constituent raw materials constituting the first foamed resin raw material and a plurality of second constituent raw materials constituting the second foamed resin raw material to the mixing device;
A plurality of first inlets that are opened in series in the length direction of the cylindrical case body and to which the raw material supply pipes of the corresponding first tanks containing the respective first constituent raw materials are individually connected;
A plurality of first outlets that are opened adjacent to the respective first inlets in the length direction of the cylindrical case body, and to which the raw material recovery pipes of the corresponding first tanks are individually connected;
A plurality of second inlets that are opened in series in the length direction of the cylindrical case body, and each of the corresponding second tank raw material supply pipes containing the respective second constituent raw materials are individually connected;
A plurality of second outlets that are opened adjacent to the respective second inlets in the longitudinal direction of the cylindrical case body, and to which the raw material recovery pipes of the corresponding second tanks are individually connected;
A plurality of discharge ports that are opened in series in the length direction of the cylindrical case body, are adjacent to the first inlet port and the second inlet port, and respectively open to the mixing device provided in the cylindrical case body. When,
The valve body is housed in the cylindrical case body and is laid in series in the length direction of the valve body that is rotatable and displaceable in the first position, the second position, and the third position. When the valve body is rotated and displaced in the second position, the first inlet and the outlet are opposed to the first inlet and the first outlet when the valve body is rotated and displaced in three positions. A plurality of opposed first recesses;
The valve body is disposed in series in the length direction of the valve body, and is opposed to the second inlet and the second outlet when the valve body is rotationally displaced to the first posture or the second posture, When the main body is rotationally displaced in the third posture, the main body is constituted by a plurality of second recessed portions facing the respective second inflow ports and discharge ports.

  According to the valve device of the present invention, a plurality of first inlets and a plurality of first inlets to which the corresponding first tanks are connected are configured based on the cylindrical case main body and the valve main body accommodated therein. The outlet, the plurality of second inlets to which the corresponding second tanks are connected, the plurality of second outlets, and the plurality of outlets are opened in the cylindrical case body, and the plurality of first recesses and the plurality of outlets are provided. The second recessed portion is formed in an extremely simple configuration by being provided in the valve body, and there is an advantage that the equipment cost can be reduced by reducing the size and simplification of the entire apparatus. And discharge of the 1st constituent raw material which comprises the 1st foaming resin raw material for shape | molding the 1st urethane foam, and the 2nd which comprises the 2nd foaming resin raw material for shape | molding the 2nd urethane foam The discharge of the constituent materials can be instantaneously switched by a simple operation by simply rotating the valve body by the operating means. Further, each discharge port is commonly used for discharging each first component material and each second component material, and therefore it is necessary to clean each discharge port when switching the discharge of these component materials. This eliminates the need for a cleaning device and basically does not execute the cleaning process, so that there is a beneficial effect such as no reduction in molding efficiency.

  Next, a preferred embodiment of the valve device according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a partially omitted perspective view showing a valve device according to a preferred embodiment attached to a mixing device, FIG. 2 is a plan view of the valve device, and FIG. 3 is a side view of the valve device. The valve device VU of the present embodiment has a plurality of (five types in the embodiment) first constituent raw materials P1, P2, P3, P4, and P5 that constitute the first foamed resin raw material for molding the first urethane foam. And a plurality (five types in the embodiment) of second constituent raw materials Q1, Q2, Q3, Q4, and Q5 constituting the second foamed resin raw material for molding the second urethane foam, This is selectively discharged to a mixing device M provided in a foam molding device (not shown) for molding. In addition, the valve apparatus of this application can be implemented in order to manufacture the foaming resin raw material for shape | molding the flexible polyurethane foam, a rigid urethane foam, and the urethane foam shape | molded by the mechanical floss method.

  Here, for example, when it is carried out to mold two types of flexible urethane foam, the first constituent raw material P1 is a polyol and the first constituent among the five types of constituent raw materials constituting the first foamed resin raw material. The raw material P2 is an isocyanate, the first constituent raw material P3 is a foaming agent, the first constituent raw material P4 is a foam stabilizer, and the first constituent raw material P5 is a catalyst. Of the five constituent raw materials constituting the second foamed resin raw material, the second constituent raw material Q1 is a polyol having different characteristics from the first constituent raw material P1, and the second constituent raw material Q2 is the first constituent raw material P2. Is an isocyanate having different characteristics, the second constituent raw material Q3 is a foaming agent different from the first constituent raw material P3, the second constituent raw material Q4 is a foam stabilizer different from the first constituent raw material P4, and the second constituent raw material Q5 is The catalyst is different from the one-component raw material P5. However, depending on the characteristics of the two types of flexible urethane foams, all the five types of constituent raw materials may be the same and the proportions thereof may be different, or only a few types of constituent raw materials may be different.

  The valve device VU of the present embodiment that selectively discharges the first foamed resin material and the second foamed resin material described above is a cylindrical case that is closely attached to the upper surface of the mixing device M described above. A main body 10, a shaft-like valve main body 12 rotatably accommodated in the cylindrical case main body 10, and an operation linked to one end of the valve main body 12 to rotate and displace the valve main body 12 by a predetermined angle. And means 14. The cylindrical case body 10 includes five first tanks T11, T12, which individually accommodate five types of first constituent raw materials P1, P2, P3, P4, and P5 that constitute the first foamed resin raw material. T13, T14, T15, and five second tanks T21, T22 for individually accommodating five types of second constituent raw materials Q1, Q2, Q3, Q4, Q5 constituting the second first foamed resin raw material , T23, T24, and T25 are connected. The mixing device M, the respective first tanks T11 to T15, and the respective second tanks T21 to T25 are illustrated in a simple rectangular shape for convenience of explanation.

  The cylindrical case main body 10 is a square cylindrical member having a required cross-sectional shape having a hexagonal shape, and an accommodating space 16 for accommodating the valve main body 12 is formed in the inside along the longitudinal direction. Yes. Further, on the wall portion, five first inlets B1, B2, B3, B4, and B5 described later and five first outlets C1, C2, C3, C4, C5, and five second inlets D1 are provided. , D2, D3, D4, D5 and five second outlets E1, E2, E3, E4, E5, and five discharge ports F1, F2, F3, F4, F5 are the length of the cylindrical case body 10 It is opened in series along the direction. In addition, a support plate portion 18 that supports a rack gear 96 that is a constituent member of the above-described operation means 14 is formed to extend in a substantially L shape at one end portion in the longitudinal direction.

  Each of the first inlets B <b> 1 to B <b> 5 is opened in series in the length direction of the cylindrical case body 10 on one vertical wall portion of the cylindrical case body 10. Then, the raw material supply pipes IP11, P12, P13, P14, IP15 connected to the corresponding first tanks T11 to T15 containing the respective first constituent raw materials P1 to P5 described above are the first inlets B1. To B5 individually. In addition, each 1st inflow port B1-B5 has an opening area (opening width) set according to the mixing ratio of each 1st structure raw material P1-P5 which comprises a 1st foamed resin raw material, and is magnitude | size. For example, the first inlet IP11 for the first constituent raw material (polyol) P1 is set to be the largest.

  Each of the first outlets C <b> 1 to C <b> 5 is opened in series in the length direction of the cylindrical case body 10 on one inclined wall portion of the cylindrical case body 10. The raw material recovery pipes OP11, OP12, OP13, OP14, and OP15 connected to the corresponding first tanks T11 to T15 containing the respective first constituent raw materials P1 to P5 described above are the first outlets C1. To C5 individually. In addition, each 1st outflow port C1-C5 sets the opening area (opening width) according to the mixing ratio of each 1st structure raw material P1-P5 which comprises a 1st foamed resin raw material, and is magnitude | size. Are different, and the corresponding first inflow ports B1 to B5 are set to the same size.

  Each of the second inflow ports D1 to D5 is connected to the other vertical wall portion of the cylindrical case main body 10 in which the first inflow ports B1 to B5 are formed. It is opened in series in 10 length directions. And the raw material supply pipes IP21, IP22, IP23, IP24, IP25 connected to the corresponding second tanks T21-T25 containing the respective second constituent raw materials Q1-Q5 described above are respectively the second inlet D1. To D5 individually. In addition, each 2nd inflow port D1-D5 also sets the opening area (opening width) according to the mixing ratio of each 2nd structural raw material Q1-Q5 which comprises a 2nd foamed resin raw material, and is magnitude | size. For example, the second inlet IP21 for the second constituent raw material (polyol) Q1 is set to be the largest.

  Each of the second outlets E1 to E5 is connected to the other inclined wall portion facing the inclined wall portion of the cylindrical case body 10 in which the first outlets C1 to C5 described above are formed. It is opened in series in the length direction. The material recovery pipes OP21, OP22, OP23, OP24 and OP25 connected to the corresponding second tanks T21 to T25 containing the respective second constituent materials Q1 to Q5 described above are the second outlets E1. To E5 individually. In addition, each 2nd outflow port E1-E5 also sets the opening area (opening width) according to the mixing ratio of each 2nd structural raw material Q1-Q5 which comprises a 2nd foamed resin raw material, and is magnitude | size. Are different, and the corresponding second inlets D1 to D5 are set to the same size.

  The respective discharge ports F1 to F5 are opened in series in the length direction of the cylindrical case main body 10 on the bottom wall portion of the cylindrical case main body 10 that is in close contact with the mixing device M provided in the cylindrical case main body 10. The first inlets B1 to B5 and the second inlets D1 to D5 are adjacent to each other. And while being used for discharge of each 1st component raw material P1-P5 which comprises the 1st foaming resin raw material supplied from each 1st inflow port B1-B5, each 2nd inflow port D1-D5. It is also used for discharging each of the second constituent raw materials Q1 to Q5 constituting the second foamed resin raw material supplied from, and is commonly used for discharging both constituent raw materials. Moreover, each of the discharge ports F1 to F5 has a length corresponding to the wall thickness of the cylindrical case body 10 and opens directly facing a mixing chamber (not shown) of the mixing device M. The discharge ports F1 to F5 are set to have the same size as the adjacent first inflow ports B1 to B5 and second inflow ports D1 to D5.

  As illustrated in FIG. 4, the valve body 12 is a shaft-like member having a required length having a circular cross-sectional shape, and has an outer diameter size that allows sliding contact with the accommodation space 16 of the cylindrical case body 10 described above. Is set. On the outer wall surface, five first recesses G1, G2, G3, G4, G5 and five second recesses H1, H2, H3, H4, H5, which will be described later, are arranged in the longitudinal direction of the valve body 12. It is laid in series along. Further, grooves 90 for mounting the annular packing 92 are formed in the circumferential direction between the first recesses G1 to G5 and between the second recesses H1 to H5. Each of the attached packings 92 is in contact with the inner wall surface of the cylindrical case body 10 to form a sealed state (FIG. 5). Such a valve main body 12 rotates to the 1st attitude | position illustrated in FIG. 7, the 2nd attitude | position illustrated in FIG. 8, and the 3rd attitude | position illustrated in FIG. 9 based on the action | operation of the action | operation means 14 mentioned above. It is displaced and is held stopped in each posture.

  Each of the first recesses G1 to G5 has a length that can be correspondingly matched with each of the first inflow ports B1 to B5, each of the first outflow ports C1 to C5, and each of the discharge ports F1 to F5. The width is formed to the required depth. That is, each of the first recesses G1 to G5 has the first inlet B1 to B5 and the first outlets C1 to C1 when the valve body 12 is rotationally displaced to the first posture or the third posture. When the corresponding first inflow ports B1 to B5 and the first outflow ports C1 to C5 are spatially communicated with each other and the valve body 12 is rotationally displaced to the second posture, The first inflow ports B1 to B5 and the discharge ports F1 to F5 are formed so as to communicate spatially.

  Further, each of the second recesses H1 to H5 can be correspondingly aligned with each of the above-described second inflow ports D1 to D5, each of the second outflow ports E1 to E5, and each of the discharge ports F1 to F5. It is formed to the required depth with thickness and width. That is, each of the second recessed portions H1 to H5 has the second inflow port D1 to D5 and the second outflow port E1 when the valve body 12 is rotationally displaced to the first posture or the second posture. When the corresponding second inflow ports D1 to D5 and the second outflow ports E1 to E5 are spatially communicated with each other and the valve body 12 is rotationally displaced to the third posture, The second inflow ports D1 to D5 and the discharge ports F1 to F5 are formed so as to communicate spatially.

  The actuating means 14 includes a pinion gear 94 attached to one end portion of the valve body 12 described above, a rack gear 96 that is slidably contacted with the support plate portion 18 described above and meshed with the pinion gear 94, and the rack gear. The cylinder 100 is disposed between 96 end portions and the base 102. The cylinder 100 is an air cylinder using air as an operating source or a hydraulic cylinder using oil as an operating source, and the bottom side thereof is connected to the base 102 and the tip of the rod 100A is connected to a rack gear 96. Yes. Accordingly, the valve body 12 is held in the first posture illustrated in FIGS. 6 and 7 when the cylinder 100 is controlled so that the rod 100A moves forward by about ½, and when the cylinder 100 is controlled so that the rod 100A moves back most. If the cylinder 100 is controlled so that the rod 100A moves forward most, the third posture illustrated in FIG. 9 is rotated and held. The first posture, the second posture, and the third posture of the valve body 12 are detected by appropriate detection means (not shown). Further, the configuration of the actuating means 14 is not limited to this, and for example, a configuration in which the valve main body 12 is rotationally displaced in the above-described postures by a stepping motor or the like may be employed.

  In addition, the mixing ratio of each 1st structural raw material P1-P5 which comprises a 1st foamed resin raw material is the opening area (opening width | variety) of each 1st inflow port B1-B5 and 1st outflow port C1-C5. While being determined by the dimension setting, the mixing ratio of each of the first constituent raw materials P1 to P5 can be changed by changing these opening areas. Similarly, the mixing ratios of the respective second constituent raw materials Q1 to Q5 constituting the second foamed resin raw material are the opening areas (opening widths) of the respective second inlets D1 to D5 and second outlets E1 to E5. The mixing ratio of the second constituent raw materials Q1 to Q5 can be changed by changing these opening areas.

  Next, the operation of the valve device VU of the present embodiment configured as described above will be described with reference to FIGS. In addition, the flow states of the respective first constituent raw materials P1 to P5 and the respective second constituent raw materials Q1 to Q5 are basically controlled synchronously only with different flow rates. Accordingly, in FIGS. 7 to 9, the first inlet B1, the first outlet C1, the second inlet D1, the second outlet E1, and the discharge port F1, and the first recess G1 and the second recess H1 are provided. By way of example, only the flow state of the first constituent raw material P1 and the second constituent raw material Q1 will be described, and the illustration and explanation of the flow state of the first constituent raw material P2 to P5 and the respective second constituent raw materials Q2 to Q5 are as follows. Omitted.

  First, in a state where any urethane foam is not molded in a foam molding apparatus (not shown), the above-described cylinder 100 is controlled to rotate and displace the valve body 12 to the first posture and stop and hold it. When the valve body 12 is pivotally displaced in the first posture as described above, as illustrated in FIGS. 6 and 7, the first recessed portion G1 is formed in the corresponding first inlet B1 and first outlet C1. In contrast, the first inlet B1 and the first outlet C1 are spatially communicated. Accordingly, the first constituent raw material P1 in the first tank T11 is pumped by a pump (not shown) and returns to the first tank T11 via the raw material supply pipe IP11, the first recessed portion G1, and the raw material recovery pipe OP11. Then, it circulates between the first tank T11 and the valve device VU.

  Further, the second recessed portion H1 spatially communicates the second inlet D1 and the second outlet E1 with respect to the corresponding second inlet D1 and the second outlet E1. Accordingly, the second constituent raw material Q1 in the second tank T21 is pumped by a pump (not shown) and returns to the second tank T21 via the raw material supply pipe IP21, the second depression H1, and the raw material recovery pipe OP21. Then, it circulates between the second tank T21 and the valve device VU.

  That is, when the valve body 12 is in the first posture, the first constituent raw material P1 and the second constituent raw material Q1 are not discharged from the discharge port F1 into the mixing device M, but both are constantly circulating and moving. Therefore, changes in viscosity and temperature are prevented.

  Next, when molding the first urethane foam in a foam molding apparatus (not shown), the cylinder 100 described above is controlled to rotate, and the valve body 12 is rotationally displaced to the second posture to be stopped and held. Thus, when the valve body 12 is rotationally displaced in the second posture, as illustrated in FIG. 8, the first recessed portion G1 is opposed to the corresponding first inlet B1 and discharge port F1, The first inlet B1 and the discharge port F1 are spatially communicated. Therefore, the first constituent raw material P1 in the first tank T11 is pumped by a pump (not shown), and is simultaneously discharged from the discharge port F1 into the mixing chamber of the mixing apparatus M through the raw material supply pipe IP11 and the first recessed portion G1. It becomes like this.

  Even if the valve body 12 is pivotally displaced to the second posture, the second recessed portion H1 is opposed to the corresponding second inlet D1 and second outlet E1, and the second inlet D1 and the second outlet The two outlets E1 are communicated spatially. Accordingly, the second constituent raw material Q1 in the second tank T21 is pumped by a pump (not shown) and returns to the second tank T21 via the raw material supply pipe IP21, the second depression H1, and the raw material recovery pipe OP21. Then, it circulates between the second tank T21 and the valve device VU.

  That is, when the valve body 12 is in the second posture, only the first component raw material P1 is discharged to the mixing device M through the discharge port F1, and the second component raw material Q1 that is not discharged is discharged into the second tank T21. And the valve device VU always circulate and move, so that changes in viscosity and temperature are prevented.

  On the other hand, when the second urethane foam is molded in a foam molding apparatus (not shown), the cylinder 100 is controlled to rotate and the valve body 12 is rotationally displaced to the third posture and stopped and held. When the valve body 12 is pivotally displaced in the third posture in this way, as illustrated in FIG. 9, the first recessed portion G1 is opposed to the corresponding first inlet B1 and first outlet C1. Thus, the first inlet B1 and the first outlet C1 are spatially communicated. Accordingly, the first constituent raw material P1 in the first tank T11 is pumped by a pump (not shown) and returns to the first tank T11 via the raw material supply pipe IP11, the first recessed portion G1, and the raw material recovery pipe OP11. Then, it circulates between the first tank T11 and the valve device VU.

  Further, since the valve body 12 is pivotally displaced to the third posture, the second recessed portion H1 is opposed to the corresponding second inlet D1 and discharge port F1, and these second inlet D1 and discharge port F1. To communicate spatially. Accordingly, the second constituent raw material Q1 in the second tank T21 is pumped by a pump (not shown) and discharged from the discharge port F1 into the mixing chamber of the mixing apparatus M through the raw material supply pipe IP21 and the second recess H1. become.

  That is, when the valve body 12 is in the third posture, only the second constituent raw material Q1 is simultaneously discharged to the mixing device M through the discharge port F1, and the first constituent raw material P1 that is not discharged is the first tank. Since it is constantly circulating between T11 and the valve device VU, changes in viscosity, temperature and the like are prevented.

  In addition, when it demonstrates including the 1st structural raw material P2-P5 and the 2nd structural raw material Q2-Q5 which abbreviate | omitted illustration and description, when the valve main body 12 exists in a 1st attitude | position, 1st structural raw material P1-P5 and 2nd The constituent raw materials Q1 to Q5 are not discharged into the mixing apparatus M from the corresponding discharge ports F1 to F5, but any of them constantly circulates and prevents changes in viscosity and temperature. Further, when the valve body 12 is in the second posture, only the first constituent raw materials P1 to P5 are discharged to the mixing device M through the discharge ports F1 to F5, and the second constituent raw materials Q1 to Q5 that are not discharged always circulate. Changes in viscosity and temperature are prevented. Further, when the valve body 12 is in the third posture, only the second constituent raw materials Q1 to Q5 are simultaneously discharged to the mixing device M through the discharge ports F1 to F5, and the first constituent raw materials P1 to P5 that are not discharged are always circulated. Therefore, changes in viscosity and temperature are prevented.

  As described above, the valve device VU of the present embodiment has a very simple configuration including the cylindrical case body 10 and the valve body 12, and the entire device can be reduced in size and simplified so that the equipment cost is suitably suppressed. It has been. Then, the five types of first constituent raw materials P1 to P5 that constitute the first foamed resin raw material and the five types of first foamed resin raw material that constitute the first foamed resin raw material simply by rotationally displacing the valve body 12 by the operating means 14 The simultaneous circulation of the two constituent raw materials Q1 to Q5, the discharge of the first constituent raw materials P1 to P5, and the discharge of the second constituent raw materials Q1 to Q5 can be switched simultaneously and instantaneously.

  Moreover, since each discharge port F1-F5 is shared by discharge of each 1st structure raw material P1-P5 and discharge of each 2nd structure raw material Q1-Q5, it is 1st structure in this discharge port F1-F5. The raw materials P1 to P5 or the second constituent raw materials Q1 to Q5 remain and do not stick. That is, when the discharge of the first constituent raw materials P1 to P5 is finished and switched to the discharge of the second constituent raw materials Q1 to Q5, the first constituent raw materials P1 to P5 remain attached to the discharge ports F1 to F5. However, since the second constituent raw materials Q1 to Q5 to be discharged next extrude them, the first constituent raw materials P1 to P5 are prevented from adhering to the discharge ports F1 to F5. Similarly, when the discharge of the second constituent raw materials Q1 to Q5 is finished and switched to the discharge of the first constituent raw materials P1 to P5, the second constituent raw materials Q1 to Q5 remain attached to the discharge ports F1 to F5. Even so, since the first constituent materials P1 to P5 to be discharged next extrude, the second constituent materials Q1 to Q5 are prevented from adhering to the discharge ports F1 to F5. Therefore, when the valve device VU is operated, it is not necessary to clean the discharge ports F1 to F5 when switching the discharge of the first constituent raw materials P1 to P5 and the second constituent raw materials Q1 to Q5, and the equipment cost is reduced because the equipment for the cleaning device is not required. In addition, since the cleaning process is basically unnecessary, there is no loss time and the molding efficiency is not lowered.

  The first inlet, the first outlet, the second inlet, the second outlet, and the discharge port that are opened in the cylindrical case body 10, the first recess and the second that are recessed in the valve body 12. The number of recesses is not limited to the five exemplified in the above-described embodiment, but the number of first constituent raw materials constituting the first foamed resin raw material and the second constitution constituting the second foamed resin raw material. It is set according to the number of raw materials.

  The valve device according to the present invention selectively discharges a plurality of first constituent raw materials constituting the first foamed resin raw material and a plurality of second constituent raw materials constituting the second foamed resin raw material to the mixing device. For example, it is possible to suitably form a first urethane foam and a second urethane foam having different characteristics.

It is a partially omitted perspective view showing the valve device according to a preferred embodiment attached to the mixing device. It is a top view of the valve apparatus of a present Example. It is a side view of the valve apparatus of a present Example. It is a top view of the valve body which constitutes a valve device. It is the VV sectional view taken on the line of FIG. It is the VI-VI sectional view taken on the line of FIG. It is explanatory sectional drawing which showed the state which rotationally displaced the valve main body to the 1st attitude | position, Comprising: The state which the 1st constituent raw material and the 2nd constituent raw material circulate is shown. It is explanatory sectional drawing which showed the state which carried out the rotational displacement of the valve main body to the 2nd attitude | position, Comprising: The 1st constituent raw material has shown the state which the 2nd constituent raw material circulates while discharging from an ejection opening. It is explanatory sectional drawing which showed the state which rotationally displaced the valve main body to the 3rd attitude | position, Comprising: The 1st constituent raw material circulates and the 2nd constituent raw material discharges from the discharge port.

Explanation of symbols

10 Tubular Case Body 12 Valve Body B1, B2, B3, B4, B5 First Inlet C1, C2, C3, C4, C5 First Outlet D1, D2, D3, D4, D5 Second Inlet E1, E2 , E3, E4, E5 Second outlet F1, F2, F3, F4, F5 Discharge port G1, G2, G3, G4, G5 First recess H1, H2, H3, H4, H5 Second recess IP11, IP12 , IP13, IP14, IP15 Raw material supply pipe IP21, IP22, IP23, IP24, IP25 Raw material supply pipe M Mixer OP11, OP12, OP13, OP14, OP15 Raw material recovery pipe OP21, OP22, OP23, OP24, OP25 Raw material recovery pipe P1, P2, P3, P4, P5 First component raw material Q1, Q2, Q3, Q4, Q5 Second component raw material T11, T12, T13, T14, T15 First tank T21, T22, T23, T24, T25 Second tank

Claims (2)

A plurality of first constituent raw materials (P1, P2, P3, P4, P5) constituting the first foamed resin raw material and a plurality of second constituent raw materials (Q1, Q2, Q3, Q4, Q5) is a valve device for selectively discharging the mixing device (M),
Each of the corresponding first tanks (T11, T12, T13, which are opened in series in the length direction of the cylindrical case body (10) and contain the respective first constituent raw materials (P1, P2, P3, P4, P5). A plurality of first inlets (B1, B2, B3, B4, B5) to which the raw material supply pipes (IP11, IP12, IP13, IP14, IP15) of T14, T15) are individually connected;
The cylindrical case body (10) is opened adjacent to the first inlets (B1, B2, B3, B4, B5) in the longitudinal direction, and the corresponding first tanks (T11, T12, T13, A plurality of first outlets (C1, C2, C3, C4, C5) to which the material recovery pipes (OP11, OP12, OP13, OP14, OP15) of T14, T15) are individually connected;
Each of the corresponding second tanks (T21, T22, T23), which are opened in series in the length direction of the cylindrical case body (10) and contain the respective second constituent materials (Q1, Q2, Q3, Q4, Q5). , T24, T25) and a plurality of second inlets (D1, D2, D3, D4, D5) to which the material supply pipes (IP21, IP22, IP23, IP24, IP25) are individually connected,
The cylindrical case body (10) is opened adjacent to the respective second inflow ports (D1, D2, D3, D4, D5) in the length direction, and the corresponding second tanks (T21, T22, T23, A plurality of second outlets (E1, E2, E3, E4, E5) to which the material recovery pipes (OP21, OP22, OP23, OP24, OP25) of T24, T25) are individually connected;
The cylindrical case body (10) is opened in series in the length direction, and each of the first inlet (B1, B2, B3, B4, B5) and the second inlet (D1, D2, D3, D4, D5). ), A plurality of discharge ports (F1, F2, F3, F4, F5) each opening to the mixing device (M) provided side by side with the cylindrical case body (10),
A valve body (12) accommodated in the cylindrical case body (10) and pivotable in a first position, a second position, and a third position is recessed in series in the length direction of the valve body. When the (12) is rotationally displaced to the first or third posture, the first inlet (B1, B2, B3, B4, B5) and the first outlet (C1, C2, C3, C4, C5), when the valve body (12) is pivotally displaced to the second position, the first inlet (B1, B2, B3, B4, B5) and the outlet (F1, F2, F3) , F4, F5), a plurality of first recesses (G1, G2, G3, G4, G5),
The valve main body (12) is provided in series in the length direction, and when the valve main body (12) is rotationally displaced to the first posture or the second posture, the respective second inlets (D1, D2, D3, D4, D5) and the second outlet (E1, E2, E3, E4, E5), when the valve body (12) is rotationally displaced to the third position, the respective second inlets (D1, D2, D3, D4, D5) and a plurality of second recesses (H1, H2, H3, H4, H5) facing the discharge ports (F1, F2, F3, F4, F5) A valve device characterized by. Each of the first inflow ports (B1, B2, B3, B4, B5) and the first outflow ports (C1, C2, C3, C4, C5) are used for producing the first foamed resin raw material. 1 Opening area is set according to the mixing ratio of raw materials (P1, P2, P3, P4, P5),
Each of the second inflow ports (D1, D2, D3, D4, D5) and the second outflow ports (E1, E2, E3, E4, E5) are used for producing the second foamed resin raw material. The valve device according to claim 1, wherein the opening area is set according to the mixing ratio of the two constituent raw materials (Q1, Q2, Q3, Q4, Q5).

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