JP2019155841A - Fluid material supply method - Google Patents

Abstract

To prevent damage in the appearance of a to-be-supplied member 101 by a fluid material overflowed from a space part 101a to the outside of the to-be-supplied member 101, with a simple constitution, when the fluid material discharged from a protruding-shaped discharge part 3 is supplied to the space part 101a inside the to-be-supplied member 101.SOLUTION: A cylindrical member (nozzle member 4) capable of attaching to a discharge part 3 and detaching from the discharge part 3 is manufactured in advance so that one end part can be inserted into and extracted from a through hole 101c so provided as to penetrate a wall part 101b forming a space part 101a in a to-be-supplied member 101, and further the other end part is externally fitted in a condition where the discharge part 3 is inserted by a specified amount. The other end part of the cylindrical member is attached to the discharge part 3, and further the one end part of the cylindrical member is inserted into the through hole 101c, and then a fluid material is discharged from the discharge part 3, and the discharged fluid material is supplied to the space part 101a of the to-be-supplied member 101 via the cylindrical member.SELECTED DRAWING: Figure 5

Description

  The present invention belongs to a technical field related to a fluid material supply method.

  2. Description of the Related Art Conventionally, there is known a fluid material supply method for supplying fluid material (particularly foamable material) discharged from a protruding discharge portion (nozzle) to the space portion of a member to be supplied having a space portion inside ( For example, see Patent Document 1). In Patent Document 1, the tip of the discharge part is inserted into an injection port (a through hole provided so as to penetrate the wall part forming the space part) of the supplied member, and then the fluid material is discharged from the discharge part. Is discharged, and the discharged fluid material is supplied to the space of the supplied member.

  Further, in Patent Document 2, an outer skin sewn in a bag shape is set in a mold, and an injection nozzle in which a lower end portion is inserted into the outer skin is held in a holding portion of the mold, and the injection nozzle is inserted through the injection nozzle. In other words, it is disclosed to inject a foaming liquid for pad molding into an outer skin from an injection part (protruding discharge part) of an injection gun. In this patent document 2, when the injection part of the injection gun is detached from the injection port of the injection nozzle after the foaming liquid is injected into the epidermis, the injection port of the injection nozzle is closed with a lid by an opening / closing mechanism. In the foaming of the foaming liquid, the foaming liquid is prevented from being ejected outside from the injection port of the injection nozzle.

JP 2009-113215 A JP 2009-083433 A

  When the discharge part is directly inserted into the through hole of the supplied member and the fluid material is supplied to the space inside the supplied member as in Patent Document 1, the discharge part is removed from the through hole after the supply. Sometimes, the fluid material supplied to the space overflows from the through hole to the outside of the supply target member. In particular, when the fluid material is a foamable material, it is difficult to accurately estimate the amount of foaming, so the foamed fluid material tends to overflow to the outside of the supplied member. For this reason, the overflowing fluid material adheres to the surface of the supplied member, and the appearance of the supplied member is impaired.

  Therefore, as in Patent Document 2, the lid of the injection port of the injection nozzle (which can be regarded as a part of the supplied member since it is held in the mold together with the supplied member) by the opening / closing mechanism. By closing the mouth, the flowing material can be prevented from overflowing to the outside of the supplied member.

  However, it is difficult to provide an opening / closing mechanism such as that in Patent Document 2 when supplying a fluid material to the space of a member to be supplied that is not covered with a mold. However, the configuration becomes complicated.

  The present invention has been made in view of such a point, and an object of the present invention is to supply a fluid material discharged from a protruding discharge portion to a space portion inside a supply target member. Even if the fluid material supplied to the part overflows to the outside of the supplied member, the appearance of the supplied member is prevented from being impaired by the overflowing fluid material with a simple configuration.

  In order to achieve the above object, the present invention is directed to a fluid material supply method for supplying a fluid material discharged from a protruding discharge portion to a space portion of a supplied member having a space portion therein. The part can be inserted into and removed from the through hole provided so as to penetrate the wall part forming the space part in the supplied member, and the discharge part is inserted into the other end part by a predetermined amount. In this state, a tubular member that can be attached to the discharge portion and removable from the discharge portion is prepared in advance so that the other end portion is fitted around the discharge portion. The other end portion is attached to the discharge portion so that the other end portion is fitted around the discharge portion in a state where the discharge portion is inserted into the other end portion by a predetermined amount. After the setting step of inserting the one end portion of the through hole into the through hole, and the setting step, Discharging a fluid material from the serial discharge portion, a fluid material that issued said discharge was set to and a fluid material supply step of supplying the space portion of the supply target member through the tubular member.

  Even if the fluid material supplied to the space inside the member to be supplied overflows from the through hole to the outside of the member to be supplied by the above method, the overflowing fluid material is accommodated inside the cylindrical member. By inserting the cylindrical member into the through hole as described above, the fluid material can be prevented from adhering to the surface of the supplied member. In addition, by appropriately setting the length of the cylindrical member, the fluid material adheres to the surface of the supplied member without providing an opening / closing mechanism for opening and closing the opening on the other end side of the cylindrical member. Can be prevented. Furthermore, if the cylindrical member is used as a disposable one, the troublesomeness such as washing the cylindrical member every time it is used can be eliminated. Even if the cylindrical member is used as a disposable member in this way, the cylindrical member is simple, and thus a large number of cylindrical members can be easily produced at low cost.

  The fluid material may be a foamable material. Further, the fluid material may be a mixture of a plurality of foamable materials that are mixed and foamed.

  When such a foamable material is supplied to the space inside the supplied member, the supplied foamable material foams and easily overflows to the outside of the supplied member. By supplying the foamable material to the space portion of the supplied member, the foamable material can be foamed from the space portion of the supplied member to the inside of the cylindrical member. It can prevent adhering to the surface of a supply member. Further, even if the foamed foaming material overflows a certain amount from the opening on the other end side of the cylindrical member, the overflowing foamable material is almost cured, and the foamable material Does not sag on the surface of the supplied member.

  As described above, according to the fluid material supply method of the present invention, one end can be inserted into and removed from the through-hole provided so as to penetrate the wall portion forming the space portion in the supplied member, and The flow discharged from the discharge portion through the tubular member that can be attached to the discharge portion and removable from the discharge portion so that the discharge portion is inserted into the other end portion in a predetermined amount. By supplying the material to the space part of the supplied member, even if the fluid material supplied to the space part inside the supplied member overflows from the through hole to the outside of the supplied member, the structure is simple. It is possible to prevent the appearance of the member to be supplied from being damaged by the overflowing fluid material.

It is a perspective view which shows the mixing apparatus used when performing the fluid material supply method which concerns on embodiment of this invention. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is sectional drawing which expands and shows IV part of FIG. It is a figure which shows the flow of the 1st fluid material and 2nd fluid material in a mixing apparatus and a supply unit. It is a figure which shows the supply system of the air for driving the valve which controls the flow of the 1st fluid material and the 2nd fluid material.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIGS. 1-3 shows the mixing apparatus 1 used when performing the fluid material supply method which concerns on embodiment of this invention. The mixing device 1 mixes a plurality of fluid materials, discharges the mixed fluid materials from a projection-like ejection portion 3 provided on the block member 2, and supplies the fluid material to a supply portion. In the present embodiment, the plurality of fluid materials are a first fluid material and a second fluid material, which are foamable materials that are mixed and foamed. The first fluid material and the second fluid material are, for example, isocyanate and polyol (reactive material (liquid) that chemically reacts with each other), which are raw materials of two-component foamable urethane. The supplied portion is, for example, the space portion 101a of the supplied member 101 having a space portion 101a therein (see FIG. 5). The space portion 101a of the supplied member 101 is a closed cross-section space portion of a vehicle body member (frame) such as a pillar, a side sill, or a roof rail in an automobile.

  In this embodiment, as shown in FIG. 5, the mixing device 1 is called a gun or a mixing head that can be held by the operator 8, and the mixed fluid material is supplied to the supplied member 101. When a predetermined operation switch (not shown) provided in the mixing device 1 is operated when supplying the space 101a, the first fluid material and the second fluid material are respectively mixed in the mixing chamber 11 described later. After being mixed, the mixed fluid material is supplied to the space portion 101 a of the supply target member 101. The mixing device 1 is provided with a grip portion 7 that can be held by an operator 8 (see FIGS. 1, 3, and 5). The mixing apparatus 1 is connected via a supply tube 54 and a return tube 55 described later to a supply unit 51 configured to be freely movable on a floor such as a factory.

  A cylindrical nozzle member 4 (tubular member) is attached to the discharge unit 3. The tip of the nozzle member 4 is inserted into a through-hole 101c provided in the supplied member 101 so as to penetrate the wall 101b forming the space 101a. It is discharged and supplied from the member 4 to the space 101a. It should be noted that a bulging portion 4a (diameter larger than the inner diameter of the through hole 101c is formed on the outer peripheral surface of the nozzle member 4 so that the tip portion of the nozzle member 4 enters the space portion 101a by a preset amount. 3 and 5), the operator 8 presses the bulging portion 4a against the periphery of the through hole 101c in the wall portion 101b.

  One end portion (tip portion) of the nozzle member 4 can be inserted into and removed from the through hole 101c of the supplied member 101. On the other hand, the other end portion (base end portion) of the nozzle member 4 is fitted around the discharge portion 3 with the discharge portion 3 being inserted into the other end portion by a predetermined amount. The attachment to the discharge part 3 and the removal from the discharge part 3 are possible. The amount of insertion of the discharge part 3 into the nozzle member 4 is such that the nozzle member 4 does not wobble with respect to the discharge part 3. In the present embodiment, the entire discharge unit 3 is inserted into the nozzle member 4. At this time, although detailed illustration is omitted, the nozzle member 4 is locked to a locking member provided on the block member 2 so as not to be inadvertently detached from the discharge unit 3. This locking can be released when the operator 8 removes the nozzle member 4 from the discharge part 3.

  The nozzle member 4 is disposable, and when one discharge from the nozzle member 4 (discharge during a predetermined time described later) is completed, the nozzle member 4 is replaced with another nozzle member 4. Therefore, a large number of nozzle members 4 are prepared in advance corresponding to the mass production of the supplied member 101. Thus, by using the nozzle member 4 as a disposable thing, the troublesomeness, such as washing | cleaning the nozzle member 4 whenever it uses, can be eliminated. Moreover, even if the nozzle member 4 is used as a disposable one, the nozzle member 4 is simple, so that a large number of nozzle members 4 can be easily manufactured at low cost.

  Hereinafter, in the mixing apparatus 1, the side on which the discharge unit 3 is provided is referred to as the front side, the opposite side is referred to as the rear side, the left side viewed from the front side is referred to as the left side, and the right side viewed from the front side is referred to as the right side (see FIG. 1). ).

  The mixing apparatus 1 includes a mixing chamber 11 in which the first fluid material and the second fluid material are mixed, and two supply paths 12 that supply the first fluid material and the second fluid material to the mixing chamber 11, respectively. The mixing chamber 11 is formed in a circular cross section extending in the front-rear direction inside the block member 2. The two supply paths 12 are respectively formed inside two valve bodies 20 that extend in the left-right direction on the left side and the right side in the front portion of the mixing device 1. The two supply paths 12 are enlarged in the vicinity of the block member 2. On the extended line of the mixing chamber 11 on the front surface of the block member 2, the discharge unit 3 is provided so as to communicate with the mixing chamber 11. The inner diameter of the discharge unit 3 is substantially the same as the inner diameter of the mixing chamber 11.

  The two valve bodies 20 are fixed in a state in which they are abutted with each other on opposite surfaces facing each other in the left-right direction. The block member 2 is sandwiched between opposing surfaces of the two valve bodies 20. Each valve body 20 has an inlet 21 for introducing a first fluid material or a second fluid material from a supply unit 51 (specifically, a tank 53 described later in detail) into each supply channel 12, and each as described below. When the opening of the orifice portion 13 is closed, a lead-out port 22 is provided for returning the first fluid material or the second fluid material introduced from the introduction port 21 to each supply path 12 to the supply unit 51. Yes.

  As shown in FIGS. 2 and 4, the two supply paths 12 are each connected to the mixing chamber 11 via the orifice portion 13. That is, two orifice portions 13 are provided opposite to each other in the radial direction of the mixing chamber 11, one on each of the left and right sides of the mixing chamber 11. The two orifice parts 13 are respectively provided at the openings of the two supply paths 12 to the mixing chamber 11. The two orifice portions 13 have openings that are narrowed to an opening diameter smaller than the diameter of the corresponding supply path 12 and communicate with the mixing chamber 11.

  In this embodiment, the opening of each orifice part 13 is comprised in two steps of the small diameter part 13a and the large diameter part 13b larger in diameter than the small diameter part 13a. The small-diameter portion 13a is provided in the block member 2, while the large-diameter portion 13b is formed on the bottomed cylindrical member 15 provided on the upstream side (the enlarged portion) of the small-diameter portion 13a in the supply path 12. It is provided on the bottom 15a. The bottomed cylindrical member 15 is separate from the block member 2. The bottom portion 15a of the bottomed cylindrical member 15 is fixed so as to be in close contact with the block member 2, and the large-diameter portion 13b is continuous with the small-diameter portion 13a at the bottom portion 15a and opens concentrically. The first fluid material or the second fluid material introduced into the supply path 12 from the introduction port 21 flows through the inside of the bottomed cylindrical member 15 toward the opening of the orifice portion 13. And when opening of the orifice part 13 is open, a 1st fluid material or a 2nd fluid material is supplied to the mixing chamber 11 through the large diameter part 13b and the small diameter part 13a in order.

  By supplying the first fluid material and the second fluid material to the mixing chamber 11 through the openings of the orifice portion 13 respectively, the first fluid material and the second fluid material are atomized and easily mixed. In particular, the opening of each orifice part 13 is configured in two stages, the small diameter part 13a and the large diameter part 13b as described above, so that the first fluid material and the second fluid material spread from the outlet of the orifice part 13 opening. As a result, the mixing in the mixing chamber 11 can be performed more satisfactorily. The length of the opening of the orifice portion 13 (the length in the flow direction of the fluid material), that is, the length of the small diameter portion 13a and the large diameter portion 13b is determined by the opening of the orifice portion 13 in the first fluid material and the second fluid material. In order to spread out from the outlet of the gas, it is preferable to shorten it.

  The ratio of the inner diameter of the small-diameter portion 13a to the inner diameter of the large-diameter portion 13b in each orifice portion 13 is set according to the viscosity (viscosity) of the fluid material flowing through the orifice portion 13 from the viewpoint of the degree of atomization and the spread. Is done. In this embodiment, the diameter of the small diameter part 13a in the two orifice parts 13 is made the same, and the diameter of the large diameter part 13b is set according to the viscosity of the first fluid material and the second fluid material, respectively. It is preferable to increase the diameter of the large diameter portion 13b as the viscosity of the fluid material flowing through the orifice portion 13 increases. When the first fluid material and the second fluid material are isocyanate and polyol, respectively, the viscosity of the polyol is larger, so the diameter of the large diameter portion 13b through which the polyol passes is larger than that of the large diameter portion 13b through which the isocyanate passes. It becomes larger than the diameter. By configuring the bottomed cylindrical member 15 separately from the block member 2, when the fluid material mixed in the mixing chamber 11 is changed, the bottomed cylindrical member 15 (that is, the large diameter portion 13b) is changed. All you need to do is easily.

  The diameter (the above ratio) of the opening 15b is preferably set in consideration of the supply amount of the fluid material per unit time to the mixing chamber 11 in addition to the viscosity of the fluid material. Even when the supply amount of the fluid material to the mixing chamber 11 per unit time is changed, it is only necessary to change the bottomed cylindrical member 15 (that is, the opening 15b).

  Each valve body 20 is provided with an on-off valve 24 that opens and closes the opening of the orifice portion 13 (in this embodiment, the large-diameter portion 13b that is the opening of the bottomed cylindrical member 15). Each on-off valve 24 has a valve body 24a that is separated from the large-diameter portion 13b in the left-right direction along the central axis of the large-diameter portion 13b upstream of the large-diameter portion 13b in the corresponding supply passage 12. The large-diameter portion 13b is opened and closed by separating and connecting the body 24a. The valve body 24a includes a spherical portion 24b that abuts on the opening peripheral edge of the large diameter portion 13b in the bottom portion 15a of the bottomed cylindrical member 15 and closes the large diameter portion 13b.

  The on-off valve 24 provided in each valve body 20 has an air cylinder 26 as an actuator that drives the valve body 24a by supplying fluid (air in the present embodiment). In the present embodiment, the air cylinder 26 drives the valve body 24a by supplying air from an air source 71 (see FIG. 6). The air cylinder 26 is fixed to a surface of the valve body 20 opposite to the facing surface.

  The air cylinder 26 has a piston 26a that is inserted into the air cylinder 26 and connected to the valve body 24a. In the air cylinder 26, a mixing chamber-side air chamber 26b is provided on the mixing chamber 11 side of the piston 26a, and an anti-mixing chamber-side air chamber 26c is provided on the anti-mixing chamber 11 side of the piston 26a. In addition, the air cylinder 26 is provided with a mixing chamber-side air introduction portion 26d for introducing air into the mixing chamber-side air chamber 26b, and a reaction chamber for introducing air into the anti-mixing chamber-side air chamber 26c. A mixing chamber side air introducing portion 26e is provided.

  When air is introduced into the mixing chamber side air chamber 26b from the mixing chamber side air introduction portion 26d, the valve body 24a moves to the anti-mixing chamber 11 side, and the spherical portion 24b of the valve body 24a has a bottomed cylindrical shape. The large-diameter portion 13b is opened away from the opening periphery of the large-diameter portion 13b in the bottom portion 15a of the member 15. On the other hand, when air is introduced into the anti-mixing chamber side air chamber 26c from the anti-mixing chamber side air introduction portion 26e, the valve body 24a moves to the mixing chamber 11 side, and the spherical portion 24b of the valve body 24a is provided. The large diameter portion 13b is closed by abutting against the opening peripheral edge portion of the large diameter portion 13b in the bottom portion 15a of the bottom cylindrical member 15.

  An air cylinder 31 is also provided at the rear portion of the mixing device 1. The air cylinder 31 drives the cleaning piston 32 in the front-rear direction by air from the same air source 71 as the air cylinder 26 for the on-off valve 24. In the air cylinder 31, a piston 31a connected to the cleaning piston 32, a rear air chamber 31b located on the rear side of the piston 31a, and a front air chamber 31c located on the front side of the piston 31a are provided. . The air cylinder 31 is provided with a first air introduction part 31d for introducing air into the rear air chamber 31b and a second air introduction part 31e for introducing air into the front air chamber 31c. Yes. When air is introduced into the rear air chamber 31b from the first air introduction portion 31d, the piston 31a and the cleaning piston 32 move to the front side, while air is introduced into the front air chamber 31c from the second air introduction portion 31e. Sometimes, the piston 31a and the cleaning piston 32 move to the rear side.

  When the fluid material mixed in the mixing chamber 11 is discharged from the discharge portion 3 and the nozzle member 4, the tip of the cleaning piston 32 is located behind the opening of the orifice portion 13. The maximum outer diameter of the cleaning piston 32 is substantially the same as the inner diameter of the mixing chamber 11 having a circular cross section, and the cleaning piston 32 moves in the mixing chamber 11 in order from the front side to the rear side after discharging the mixed fluid material. The adhering matter (mixed fluid material or foamable material after foaming) adhering to the inner wall surface of the mixing chamber 11 is scraped off. In the present embodiment, the cleaning piston 32 moves to the front side until its tip reaches the tip of the discharge unit 3.

  The supply unit 51 has a housing 52 with wheels 52a. In the housing 52, two tanks 53 for storing the first fluid material and the second fluid material are provided. Each tank 53 is connected to the inlet 21 of each valve body 20 of the mixing apparatus 1 via a supply tube 54. Each tank 53 is connected to the outlet 22 of each valve body 20 via a return tube 55.

  An electric pump 57 is provided in the middle of the supply tube 54 in the casing 52, and the electric pump 57 allows the fluid material (the first fluid material or the second fluid material) in each tank 53 to be It is supplied to the inlet 21 of the valve body 20 of the mixing apparatus 1 via the supply tube 54. When the large diameter portion 13 b is opened, the fluid material supplied to the introduction port 21 is supplied to the mixing chamber 11 through the supply path 12 and the orifice portion 13. Since the two large diameter portions 13b are opened at the same time, the first fluid material and the second fluid material are mixed in the mixing chamber 11, and the mixed fluid material is discharged into the discharge unit 3 and the nozzle member. 4 is discharged. Thus, the supply tube 54 and the supply path 12 constitute a supply path 65 for supplying the fluid material in the tank 53 to the discharge unit 3.

  On the other hand, when the large-diameter portion 13 b is closed, the fluid material supplied to the introduction port 21 is led out from the lead-out port 22 and returned to the tank 53 via the return tube 55. In this manner, the fluid material in the tank 53 is circulated through the supply tube 54 and the return tube 55 before being discharged from the discharge unit 3. Thus, the supply tube 54 and the return tube 55 are circulated so that the fluid material in the tank 53 is circulated so as to return to the tank 53 after flowing out of the tank 53 when not discharged from the discharge unit 3. A path 66 is formed. In the present embodiment, the supply tube 54 serves as both the supply path 65 and the circulation path 66. The first fluid material and the second fluid material supplied to the mixing chamber 11 through the orifice portion 13 at the moment when the large diameter portion 13b is opened by the circulation of the first fluid material and the second fluid material through the circulation path 66. Is ensured. Further, as will be described later, the first fluid material and the second fluid material can be heated to a predetermined temperature during the circulation of the first fluid material and the second fluid material.

  The configuration of the supply path 65 and the circulation path 66 for the first fluid material is basically the same as the configuration of the supply path 65 and the circulation path 66 for the second fluid material. However, the diameters of the supply path 65 and the circulation path 66 are set according to the viscosity of the fluid material flowing through the supply path 65 and the circulation path 66 so that the flow rates of the first fluid material and the second fluid material are substantially the same. To be. Further, the opening diameter and / or the length of the opening of the orifice member, which is a heating member 60 to be described later, are also set according to the viscosity of the fluid material that contacts the heating member 60, and the first fluid material and the second fluid material. The degree of heating is made substantially the same.

  A circulation path 66 (return tube 55) that circulates the first fluid material and the second fluid material is provided with a first branch path 58 and a second branch path 59 connected in parallel to each other. The first branch path 58 is provided with a heating member 60 that contacts the first fluid material or the second fluid material and warms the first fluid material or the second fluid material. In the present embodiment, the heating member 60 is an orifice member having an opening narrowed to an opening diameter smaller than the diameter of the first branch path 58. The orifice member imparts a flow resistance to the first fluid material or the second fluid material when the first fluid material or the second fluid material flows through the opening, thereby providing the first fluid material or the second fluid material. It is comprised so that a fluid material may be heated. When the first fluid material and the second fluid material are isocyanate and polyol, respectively, the reaction when mixed is favorably performed at 50 ° C. or higher. Therefore, the temperatures of the first fluid material and the second fluid material are both The first fluid material and the second fluid material are heated to about 55 ° C.

  The second branch path 59 is not provided with means for changing the temperature of the first fluid material or the second fluid material, and the first fluid material or the second fluid material passes through the second branch path 59. However, the temperature of the first fluid material or the second fluid material does not basically change.

  A temperature sensor 62 (see FIG. 6) that detects the temperature of the first fluid material or the second fluid material is provided in the circulation channel 66 (in this embodiment, the supply tube 54 that serves as both the supply channel 65 and the circulation channel 66). Is provided. When the temperature detected by the temperature sensor 62 is lower than the predetermined temperature (55 ° C. when the first fluid material and the second fluid material are isocyanate and polyol, respectively), the first fluid material or the first fluid When the two fluid materials are circulated, the first fluid material or the second fluid material passes through the first branch path 58, and the first fluid material or the second fluid material is heated by the heating member 60. To do. When the temperature detected by the temperature sensor 62 is equal to or higher than the predetermined temperature, the flow path of the first fluid material or the second fluid material is switched from the first branch path 58 to the second branch path 59. In addition, in this embodiment, although the said predetermined temperature about the 1st fluid material and the 2nd fluid material is the same, you may mutually differ.

  When both the first fluid material and the second fluid material are circulating through the second branch 59 (this is known to the operator 8 by means of, for example, a display lamp), the operator 8 When the operation switch is operated by the above, the path of the first fluid material and the second fluid material is simultaneously switched from the circulation path 66 to the supply path 65 so that the first fluid material and the second fluid material enter the mixing chamber 11. Will be supplied. When a predetermined time has elapsed since this switching, the paths of the first fluid material and the second fluid material are simultaneously switched from the supply path 65 to the circulation path 66.

  FIG. 6 shows an air supply system for driving a valve (actuator) that controls the flow of the first fluid material and the second fluid material. In FIG. 6, the air supply path is indicated by a broken line.

  Air cylinders 26 (mixing chamber side air introduction portion 26d and anti-mixing chamber side air introduction portion 26e) that drive valve bodies 24a of two on-off valves 24 that open and close the openings (large diameter portions 13b) of the two orifice portions 13, respectively. The fluid supply system to the air source 71 is one fluid source, one common flow path 72 connected to the air source 71, the common flow path 72 and the air cylinder 26 for the two on-off valves 24. And two individual flow paths 73 that are connected to each other, and one first switching valve 81 that is provided in the common flow path 72 and that opens and closes the two on-off valves 24 at the same time. Has been.

  In the present embodiment, air is introduced into the mixing chamber side air introduction portion 26d when each on-off valve 24 is opened, and air is introduced into the anti-mixing chamber side air introduction portion 26e when the valve is closed. Also on the downstream side, the common flow path 72 includes a valve opening common flow path 72a and a valve closing individual flow path 72b. Each individual flow path 73 includes two valve opening individual flow paths 73a connected to the valve opening common flow path 72a and the mixing chamber side air introduction portion 26d of the air cylinder 26 for the two on-off valves 24, respectively. The valve closing individual flow path 72b and the two valve closing individual flow paths 73b respectively connected to the anti-mixing chamber side air introduction portions 26e of the air cylinders 26 for the two on-off valves 24 are included.

  The first switching valve 81 causes the common flow path 72 upstream of the first switching valve 81 to communicate with the valve opening common flow path 72a or the valve closing individual flow path 72b by the switching operation.

  When the common flow path 72 upstream of the first switching valve 81 communicates with the valve opening common flow path 72a by the switching operation of the first switching valve 81, the air from the air source 71 is common to the valve opening. The air is introduced into the mixing chamber side air introduction part 26d through the flow path 72a and the two individual valve opening flow paths 73a, and then introduced into the mixing chamber side air chamber 26b. Thereby, the large diameter part 13b of the two orifice parts 13 is opened simultaneously.

  On the other hand, when the common flow path 72 upstream of the first switching valve 81 communicates with the valve closing common flow path 72b, the air from the air source 71 is supplied to the valve closing common flow path 72b and the two valve closing common flow paths 72b. The air is introduced into the anti-mixing chamber side air introduction portion 26e through the individual flow path 73b and then introduced into the anti-mixing chamber side air chamber 26c. Thereby, the large diameter part 13b of the two orifice parts 13 is closed simultaneously.

  In this embodiment, the lengths of the two individual valve opening flow paths 73a are substantially the same, and the lengths of the two individual valve closing flow paths 73b are also substantially the same. The two valve-opening individual flow paths 73a have substantially the same flow path diameter, and the two valve-closing individual flow paths 73b have substantially the same flow diameter.

  From the upstream portion of the first switching valve 81 in the common flow path 72, a supply flow path 75 for supplying air to the air cylinder 31 (first and second air introduction portions 31d and 31e) that drives the cleaning piston 32 is provided. Branched. A second switching valve 82 is provided in the supply flow path 75. The second switching valve 82 supplies air to the first air introduction part 31d or the second air introduction part 31e by the switching operation. The configuration of the second switching valve 82 is the same as the configuration of the first switching valve 81.

  An opening / closing valve 91 for opening and closing the circulation path 66 is provided in the circulation path 66 (a portion excluding the first and second branch paths 58 and 59) for circulating the first fluid material and the second fluid material, respectively. An opening / closing valve 92 for opening and closing the first branch path 58 is provided in the first branch path 58 of the circulation path 66, and the second branch path 59 of the circulation path 66 is provided with the second branch path 59. An on-off valve 93 for opening and closing the branch path 59 is provided. The three on-off valves 91 to 93 of each circulation path 66 are respectively operated by air cylinders 91a, 92a, 93a (shown only in FIG. 6) similar to the air cylinder 26 that drives the valve body 24a of the on-off valve 24. Driven to open and close.

  The air cylinder 91 a that drives the valve body of the on-off valve 91 provided in each of the two circulation paths 66 opens the air from the air source 71 by the switching operation of the third and fourth switching valves 83 and 84. The two on-off valves 91 are opened and closed, respectively.

  The air cylinder 92a that drives the valve body of the on-off valve 92 provided in each of the first branch paths 58 of the two circulation paths 66 has an air source by switching operations of the fifth and sixth switching valves 85 and 86, respectively. Air from 71 is supplied for valve opening or valve closing, respectively, whereby the two on-off valves 92 are opened and closed, respectively.

  The air cylinder 93a that drives the valve body of the on-off valve 93 provided in each of the second branch paths 59 of the two circulation paths 66 has an air source by switching operations of the seventh and eighth switching valves 87 and 88, respectively. Air from 71 is supplied for valve opening or valve closing, respectively, whereby the two on-off valves 93 are opened and closed, respectively. The configuration of the third to eighth switching valves 83 to 88 is the same as the configuration of the first switching valve 81.

  When the openings (large-diameter portion 13b) of the two orifice portions 13 are opened at the same time, the on-off valves 91 provided in the two circulation paths 66 are closed at the same time, and circulation through the circulation paths 66 is impossible. become. When the openings of the two orifice portions 13 are closed at the same time, the two on-off valves 91 are opened at the same time to enable circulation. Furthermore, in each circulation path 66, when the on-off valve 91 is opened, one of the on-off valves of the first and second branch paths 58, 59 is opened according to the temperature detected by the temperature sensor 62. . The on-off valves 92 and 93 of the first and second branch paths 58 and 59 constitute switching means for flowing a fluid material to one of the first and second branch paths 58 and 59.

  In each circulation path 66, a plurality of first branch paths 58 provided with the heating member 60 may be provided. In this case, on-off valves 92 are provided in the plurality of first branch paths 58, respectively. And it is preferable to make the heating performance of the heating member 60 provided in each of the plurality of first branch paths 58 different from each other. That is, when the heating member 60 is an orifice member as described above, the opening diameters and / or the opening lengths of the orifice members respectively provided in the plurality of first branch paths 58 are made different from each other. As a result, an appropriate first branch path 58 can be selected in accordance with the temperature of the first fluid material or the second fluid material, and the first fluid material or the second fluid material can be quickly adjusted to the predetermined temperature. . Even if the predetermined temperature is changed, it can be easily handled.

  In addition, instead of the heating member 60, a cooling member that contacts the first fluid material or the second fluid material and cools the first fluid material or the second fluid material is provided in the first branch path 58. May be. Such a cooling member can be constituted by, for example, a tubular member having heat dissipation fins on the outer peripheral surface and good thermal conductivity. When a plurality of first branch paths 58 are provided, a heating member 60 may be provided in a part of the first branch paths 58, and cooling members may be provided in the remaining first branch paths 58. Good. Depending on the type of fluid material, cooling may be required, and even when such fluid material is used, it can be easily handled.

  The operations of the first to eighth switching valves 81 to 88 and the electric pump 57 are controlled by the control unit 110 provided in the housing 52 of the supply unit 51. The control unit 110 is a controller based on a well-known microcomputer, and executes a computer program (including a basic control program such as an OS and an application program that is activated on the OS to realize a specific function). A central processing unit (CPU), a memory configured by, for example, a RAM or a ROM and storing the computer program and data, and an input / output (I / O) bus for inputting and outputting electrical signals are provided.

  The control unit 110 includes detection information from the temperature sensors 62 provided in the two circulation paths 66 that respectively circulate the first fluid material and the second fluid material, operation information of the operation switch, Operation information of a start switch provided on the outer surface is input.

  When the control unit 110 detects that the start switch has been operated, the control unit 110 enables the air to be supplied from the air source 71 to the first to eighth switching valves 81 to 88, starts the electric pump 57, and The first, third, and fourth switching valves 81, 83, 84 are controlled so that the first fluid material and the second fluid material circulate through the respective circulation paths 66. In addition, the control unit 110 controls the fifth to eighth switching valves 85 to 88 so that the first fluid material and the second fluid material flow through the branch path according to the temperature detected by the temperature sensor 62.

  In addition, when the control unit 110 detects that the operation switch is operated by the operator 8 when both the first fluid material and the second fluid material are circulating through the second branch path 59, The first, third, and fourth switching valves 81, 83, 84 are controlled so that the first fluid material and the second fluid material are simultaneously supplied to the mixing chamber 11 through the respective supply paths 65. When the predetermined time has elapsed since the detection of the operation of the operation switch, the first, third, and second flow paths are switched so that the path of the first fluid material and the second fluid material is simultaneously switched from the supply path 65 to the circulation path 66. The four switching valves 81, 83, 84 are controlled.

  Furthermore, when the control unit 110 is discharging the fluid material mixed in the mixing chamber 11 from the discharge part 3 and the nozzle member 4, the tip of the cleaning piston 32 is located behind the opening of the orifice part 13, And the 2nd switching valve 82 is controlled so that the inside of the mixing chamber 11 may move to the front side and the back side in order after discharge of this mixed fluid material.

  In order to supply a fluid material (foamable material) in which the first fluid material and the second fluid material are mixed into the space 101 a of the supplied member 101 using the mixing device 1, first, the operator 8 The start switch is operated so that the first fluid material and the second fluid material circulate through the respective circulation paths 66.

  The worker 8 attaches an unused nozzle member 4 prepared in advance to the discharge unit 3. At this time, the nozzle member 4 is attached to the discharge portion 3 so that the base end portion is fitted around the discharge portion 3 in a state where the discharge portion 3 is inserted into the base end portion of the nozzle member 4 by a predetermined amount. . Thereafter, the operator 8 holds the mixing device 1 (grip part 7) in his / her hand and inserts the tip end of the nozzle member 4 attached to the discharge part 3 into the through hole 101c of the supplied member 101 (setting process).

  In addition, before attaching the nozzle member 4 to the discharge part 3, the front-end | tip part of the nozzle member 4 may be inserted in the through-hole 101c of the to-be-supplied member 101, and it is abbreviated as attaching the nozzle member 4 to the discharge part 3. At the same time, the tip of the nozzle member 4 may be inserted into the through hole 101 c of the supplied member 101.

  Subsequently, the operator 8 confirms that both the first fluid material and the second fluid material are circulating through the second branch path 59 and operates the operation switch. As a result, the first fluid material and the second fluid material are supplied to the mixing chamber 11 and mixed, and the mixed fluid material is ejected from the ejection unit 3 and is supplied to the supplied member 101 via the nozzle member 4. It is supplied into the space 101a (fluid material supplying step).

  When the predetermined time elapses from the operation of the operation switch, the discharge of the mixed fluid material is finished, and a predetermined amount of fluid material (foamable material) is supplied to the supplied member 101 during the predetermined time. It is supplied into the space portion 101a. The amount supplied to the space portion 101 a is at least an amount such that the foamed foaming material is filled in a necessary portion of the space portion 101 a, and the nozzle member 4 is also filled.

  When the discharge of the mixed fluid material is completed, the cleaning piston 32 moves to the front side, and after the tip of the cleaning piston 32 reaches the tip of the discharge part 3, it moves to the rear side and returns to the original position.

  In the present embodiment, the fluid material (foamable material) supplied into the space portion 101a of the supplied member 101 starts to foam immediately, and a preset set time from the end of the discharge of the mixed fluid material. When elapses, the foaming is finished and the cleaning piston 32 is returned to the original position.

  The worker 8 removes the tip end portion of the nozzle member 4 from the through hole 101c when the set time elapses (this is known to the worker 8 by, for example, a display lamp). In this way, the supplied member 101 in which the space 101a is filled with the foamable material is completed. The used nozzle member 4 is replaced with another new nozzle member 4 after being removed from the discharge part 3.

  Here, the length of the nozzle member 4 is set to such a length that the foamed foaming material does not reach the discharge part 3. However, since it is difficult to accurately estimate the amount of foaming of the foamable material, the foamed foamable material may enter the discharge portion 3. In order to prevent this, the tip of the cleaning piston 32 may be positioned at the tip of the discharge part 3 until the time when foaming ends. Alternatively, if the cleaning piston 32 is operated after foaming is completed, the foaming foam material that has entered the discharge part 3 can be pushed into the nozzle member 4. Further, if the tip of the cleaning piston 32 is advanced to the outside of the discharge part 3, the foaming foam material in the nozzle member 4 can be further pushed in.

  The operator 8 can also remove the nozzle member 4 from the discharge portion 3 while the nozzle member 4 is inserted into the through hole 101c immediately after the discharge of the mixed fluid material is completed. If the nozzle member 4 is removed immediately after the discharge of the mixed fluid material, the foamed foam material overflows from the through-hole 101c to the outside of the supplied member 101. By inserting the nozzle member 4 into the through hole 101c, it is possible to prevent the foamable material from adhering to the surface of the supplied member 101. Further, even if the foamed foaming material overflows a certain amount from the opening on the base end side of the nozzle member 4 that has been inserted, the overflowing foamable material is almost cured. Therefore, the foamable material does not hang down on the surface of the supplied member 101. Therefore, it is not necessary to provide an opening / closing mechanism for opening / closing the opening on the proximal end side of the nozzle member 4.

  Therefore, in this embodiment, the fluid material (foamable material) discharged from the discharge part 3 is supplied to the space part 101a of the supplied member 101 via the nozzle member 4 that can be attached to and detached from the discharge part 3. Therefore, even if the fluid material supplied to the space 101 a inside the supplied member 101 overflows from the through hole 101 c to the outside of the supplied member 101, the overflowing fluid material is accommodated inside the nozzle member 4. As a result, it is possible to prevent the appearance of the supplied member 101 from being damaged by the fluid material overflowing from the through hole 101c with a simple configuration. Further, since the nozzle member 4 is disposable, it is possible to eliminate the trouble of washing the nozzle member 4 each time it is used.

  The present invention is not limited to the embodiment described above, and can be substituted without departing from the spirit of the claims.

  For example, in the above embodiment, the first fluid material and the second fluid material are mixed by the mixing device 1 and the mixed fluid material is supplied to the supplied portion (the space portion 101a of the supplied member 101). Only one fluid material (for example, one-pack type polyurethane which is a foamable material) may be supplied to the supply portion. In this case, instead of the mixing device 1, the fluid material may be supplied to the supplied portion using a discharge device (gun) that discharges only one fluid material to the supplied portion. The supply path 65, the circulation path 66, etc. need only be provided for the fluid material.

  Further, the type and number of fluid materials when a plurality of fluid materials are mixed by the mixing device 1 and supplied to the supply portion are not limited. Similarly, the type of the fluid material in the case where only one fluid material is supplied to the supply portion by the discharge device is not limited. However, when the fluid material is heated by the heating member 60, the fluid material is preferably a fluid material having viscosity.

  Furthermore, in the said embodiment, although the opening of the orifice part 13 is comprised in two steps, the small diameter part 13a and the large diameter part 13b, you may be comprised only by the small diameter part 13a. In this case, the bottomed cylindrical member 15 becomes unnecessary, and the spherical portion 24b of the valve body 24b of the on-off valve 24 abuts on the opening peripheral edge of the small diameter portion 13a of the block member 2 to close the small diameter portion 13a. It will be. Furthermore, the orifice unit 13 is not necessarily required in a discharge device that discharges only one fluid material to the supply target.

  The above-described embodiments are merely examples, and the scope of the present invention should not be interpreted in a limited manner. The scope of the present invention is defined by the scope of the claims, and all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  INDUSTRIAL APPLICATION This invention is useful for the fluid material supply method which supplies the fluid material discharged from a protrusion-shaped discharge part to this space part of the to-be-supplied member which has a space part inside.

3 Discharge unit 4 Nozzle member (tubular member)
101 To-be-supplied member 101a Space part 101b Wall part 101c Through-hole

Claims (3)

A fluid material supply method for supplying a fluid material to be ejected from a projection-like ejection portion to the space portion of a member to be supplied having a space portion therein,
One end can be inserted into and removed from a through-hole provided in the supplied member so as to penetrate the wall forming the space, and the discharge portion is inserted into the other end by a predetermined amount. In the state where the other end portion is fitted around the discharge portion, a cylindrical member that can be attached to the discharge portion and removable from the discharge portion is prepared in advance.
The other end portion of the cylindrical member is attached to the discharge portion so that the other end portion is fitted around the discharge portion with a predetermined amount of the discharge portion being inserted into the other end portion. And a setting step of inserting the one end of the cylindrical member into the through hole;
A fluid material supplying step of discharging fluid material from the discharge portion after the setting step and supplying the discharged fluid material to the space portion of the supplied member via the cylindrical member. Fluid material supply method. The fluid material supply method according to claim 1,
A fluid material supply method, wherein the fluid material discharged from the discharge part is a foamable material. The fluid material supply method according to claim 2,
A fluid material supply method, wherein the fluid material ejected from the ejection part is a mixture of a plurality of foamable materials mixed and foamed.

Images