Multi-liquid mixing and discharging tool and head of multi-liquid mixing and discharging tool

Abstract

To prevent damage to a tool body caused by a liquid flowing back to the upstream side of a housing and solidifying.SOLUTION: A multi-liquid mixing and discharging tool according to a first embodiment includes: a gripping part configured to be held by an operator; a pumping part provided at the gripping part and configured to be driven to independently and alternately pressure-feed a first liquid and a second liquid; a housing detachably attached to an outlet of the pumping part, and including a first flow path through which a first liquid is pressure-fed from a first outlet of the pumping part, a second flow path through which a second liquid is pressure-fed from a second outlet of the pumping part, and a check valve provided in at least one of the first flow path and the second flow path; and a nozzle through which the first liquid and the second liquid flowing in from the housing are mixed and discharged.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a multi-liquid mixture discharging tool and a head for the multi-liquid mixture discharging tool. [Background technology]

[0002] The multi-liquid mixing and discharging device described in Patent Document 1 mixes and discharges at least a first fluid and a second fluid having a lower density than the first fluid, and is equipped with a first flow path for transporting the first fluid, a second flow path for transporting the second fluid, a confluence section for mixing the first fluid transported by the first flow path and the second fluid transported by the second flow path, and an infiltration suppression section for suppressing at least one of the infiltration of the second fluid into the first flow path and the infiltration of the first fluid into the second flow path. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-194613 A Summary of the Invention [Problem to be solved by the invention]

[0004] When a crack appears in a structure such as a concrete wall, a mixed liquid that solidifies when mixed may be injected to repair it. It is difficult to inject the mixed liquid into a crack in a structure, so it must be pressed in. However, because the two liquids before mixing are alternately pumped inside the tool, when the mixed liquid is pressed into the crack, one liquid may flow back into the other liquid upstream of the housing, which is part of the tool, and a mixed liquid may be generated upstream of the housing, and the mixed liquid may solidify, causing damage to the tool body.

[0005] An object of the present disclosure is to suppress damage to the tool body caused by liquid flowing back upstream from the housing and solidifying. [Means for solving the problem]

[0006] The multi-liquid mixing and discharging tool according to a first embodiment includes a gripping portion to be held by an operator, a pressure-feeding portion provided on the gripping portion and driven to pressure-feed a first liquid and a second liquid independently and alternately, a housing removably attached to an outlet of the pressure-feeding portion, the housing having a first flow path through which the first liquid is pressure-feed from a first outlet of the pressure-feeding portion, a second flow path through which the second liquid is pressure-feed from a second outlet of the pressure-feeding portion, and a check valve provided in at least one of the first flow path and the second flow path, and a nozzle through which the first liquid and the second liquid flowing in from the housing are mixed and discharged.

[0007] According to the above-described configuration, it is possible to suppress damage to the tool body caused by one liquid flowing back toward the other liquid upstream of the housing and solidifying.

[0008] The multiple liquid mixture discharging tool according to a second aspect is the multiple liquid mixture discharging tool according to the first aspect, wherein the check valve is provided in each of the first flow path and the second flow path.

[0009] According to the above configuration, it is possible to suppress damage to the tool body caused by the mixture of the first liquid and the second liquid flowing back into a flow path not provided with a check valve and solidifying the entire casing.

[0010] A multi-liquid mixture discharging tool according to a third aspect is a multi-liquid mixture discharging tool according to any one of the first and second aspects, wherein the housing has a wall portion formed in an installation area of ​​the check valve and separating the first flow path and the second flow path.

[0011] According to the above-described configuration, the liquids are present in an unmixed state in the area where the check valve is provided, so that solidification of the mixed liquid inside the housing can be suppressed.

[0012] The tool for discharging multiple liquid mixtures according to a fourth aspect is a tool for discharging multiple liquid mixtures according to any one of the first to third aspects, wherein the housing is plate-shaped and has a plate that supports the check valve in one part and allows the first liquid and the second liquid to flow to the nozzle in another part.

[0013] According to the above configuration, the number of parts can be reduced compared to a configuration in which the part responsible for supporting the check valve and the part responsible for supplying each liquid to the nozzle are separate.

[0014] A multiple liquid mixture discharging tool according to a fifth aspect is the multiple liquid mixture discharging tool according to any one of the first to fourth aspects, wherein the nozzle is removably attached to the housing.

[0015] According to the above configuration, when solidification occurs only inside the nozzle, the nozzle can be removed from the housing and only the nozzle can be replaced.

[0016] The multiple liquid mixture discharging tool according to a sixth aspect is the multiple liquid mixture discharging tool according to any one of the first to fifth aspects, and has an elastic body attached to the outer periphery of the tip of the nozzle.

[0017] According to the above configuration, when the nozzle is inserted into the discharged portion, the elastic body bites into the discharged portion, so that even when discharged at high pressure, the mixed liquid can be discharged more stably into the discharged portion than in a configuration in which an elastic body is not attached to the outer periphery of the nozzle tip.

[0018] The head of the multi-liquid mixture discharging tool of the seventh aspect is attachable to the outlet of a pressure-feeding unit and comprises a first flow path through which a first liquid can be pressure-fed from the first outlet of the pressure-feeding unit, a second flow path through which a second liquid, which solidifies by mixing with the first liquid, can be pressure-fed from the second outlet of the pressure-feeding unit, a check valve provided in at least one of the first flow path and the second flow path, and a wall portion formed downstream of the check valve and separating the first flow path and the second flow path, and a nozzle through which the first liquid and the second liquid flowing in from the housing are mixed and discharged.

[0019] According to the above configuration, when pumping a plurality of liquids that solidify when mixed, the cleaning range of the pumping section can be limited compared to a configuration in which the entire pumping section is cleaned. Effect of the Invention

[0020] According to the present disclosure, it is possible to suppress damage to the tool body caused by liquid flowing back upstream from the housing and solidifying. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a front view illustrating a gun according to an embodiment of the present disclosure. [Diagram 2] 2A is a front view of the vicinity of the machine-side discharge portion to which the packing is attached in a gun according to an embodiment of the present disclosure, and FIG. 2B is a cross-sectional view taken along the line S2-S2 in FIG. 2A. [Diagram 3] 3(a) is a front view of the socket base of the gun according to the embodiment of the present disclosure, and FIG. 3(b) is a cross-sectional view taken along the line S3-S3 of FIG. 3(a). [Figure 4] FIG. 2 is a cross-sectional view of a head according to an embodiment of the present disclosure. [Diagram 5] FIG. 2 is a cross-sectional view of a nozzle constituting a head according to an embodiment of the present disclosure. [Figure 6] 6(a) is a front view of a valve plug constituting a head according to an embodiment of the present disclosure, and FIG. 6(b) is a cross-sectional view taken along S6-S6 in FIG. 6(a). [Figure 7] 4A is a front view of a spring holder of a head according to an embodiment of the present disclosure, and FIG. 4B is a right side view. [Figure 8] 8(a) is a cross-sectional view of a state in which a valve is incorporated into a valve plug that constitutes a head according to an embodiment of the present disclosure, and FIG. 8(b) is a cross-sectional view taken along S8-S8 in FIG. 8(a) showing a state in which the valve is biased by a first liquid. [Figure 9] 1A is a top cross-sectional view showing a state in which the valves are blocking the first flow path and the second flow path, and FIG. 1B is a top cross-sectional view showing a state in which the valve of the first flow path is opened by the first liquid and the valve of the second flow path is blocked. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] (Configuration of the first embodiment) An example of a gun 10 as an example of a multi-liquid mixture discharging tool according to an embodiment of the present disclosure and an example of a head 60 constituting the multi-liquid mixture discharging tool will be described with reference to Figures 1 to 9. For ease of explanation, the arrow H shown in the figures indicates the tool up-down direction (vertical direction), the arrow W indicates the tool width direction (horizontal direction), and the arrow D indicates the tool depth direction (horizontal direction), but the actual use of the gun 10 is not limited to these.

[0023] 1 is a front view showing a gun 10 according to an embodiment of the present disclosure. The gun 10 includes a gripping part 20, a pump 30 as an example of a pressure-feeding part, a container 40, a support part 50, and a head 60. When an operator holds the gripping part 20 and inserts the tip of the head 60 into a crack in a part to be discharged (not shown), the operator presses a switch 22 (described later) to discharge a mixed liquid (described later) from the head 60. The head 60 of the gun 10 is removable from the support part 50.

[0024] The gun 10 of this embodiment is, as an example, an electric type. The grip 20 has a main body 21, a switch 22, and a battery 24. The main body 21 is L-shaped, the battery 24 is provided below a portion extending in the vertical direction, and the switch 22 is provided at a position where the portion extending in the vertical direction and the portion extending in the width direction intersect. The switch 22 is provided so as to protrude from the main body 21. The switch 22 has a movable range in the width direction, and can be switched between an ON position in which power is supplied from the battery 24 and an OFF position in which power is not supplied from the battery 24 by operating the switch 22.

[0025] The pump 30 is connected to a portion of the gripping part 20 extending in the width direction. The pump 30 is, for example, a plunger type. When the switch 22 is in the on position, the pump 30 pressure-feeds the first liquid and the second liquid alternately and independently to the head 60 via a support part 50, which will be described later. When the switch 22 is in the off position, the pump 30 does not pressure-feed the first liquid and the second liquid to the head 60. The discharge pressure of the pump 30 is 4.9 MPa (50 kgf / cm 2 ) operating pressure.

[0026] The container 40 is a bottomed cylindrical shape extending in the vertical direction, and is provided between the pump 30 and a support part 50 described later. The container 40 is flexible. A plurality of containers 40 are provided, and a first liquid and a second liquid are respectively stored in the containers 40. Since the gun 10 of this embodiment discharges a mixed liquid by mixing the first liquid and the second liquid, the first liquid and the second liquid are stored in separate containers 40 before being mixed. For example, the first liquid is a base agent of epoxy, and the second liquid is a hardener thereof, and by mixing the first liquid and the second liquid, a mixed liquid that is a grease-like (gel-like) epoxy resin is generated in a cylindrical part 72 of a nozzle 70 described later.

[0027] The support portion 50 is supported by the gripping portion 20 via the pump 30, and supports a container 40 replaceably connected to the lower end in the vertical direction, and a head 60 replaceably connected to the other end in the width direction.

[0028] Furthermore, the support part 50 has a machine-side discharge part 52, a packing 54, a socket base 56, and a nut part 58 on the head 60 side (the other end side in the width direction). In Fig. 2, (a) is a front view of the vicinity of the machine-side discharge part 52 to which the packing 54 is attached in the gun 10 according to the embodiment of the present disclosure, and (b) is a cross-sectional view taken along S2-S2 in Fig. 2(a).

[0029] The equipment-side discharge section 52 is cylindrical with a through hole inside, and is provided at the other end side of the support section 50 in the width direction, and is made of, for example, SUS (stainless steel). As shown in FIG. 2(b), the equipment-side discharge section 52 is provided with a first equipment-side flow path 521 extending in the width direction and allowing the first liquid to flow therethrough, and a second equipment-side flow path 522 extending in the width direction and parallel to the first equipment-side flow path 521 as shown in FIG. 2(a), allowing the second liquid to flow therethrough. The downstream end of the first equipment-side flow path 521 is an example of a first outlet, and the downstream end of the second equipment-side flow path 522 is an example of a second outlet. In addition, a pair of screw holes 523 extend in the width direction (W direction) as shown in FIG. 2(b) inside the equipment-side discharge section 52, and are provided to sandwich the first equipment-side flow path 521 and the second equipment-side flow path 522 in the up-down direction (H direction) as shown in FIG. 2(a). 2(b), a male screw portion 524 is provided on the outer surface of the machine-side discharge portion 52 so as to extend in the width direction (W direction). The machine-side discharge portion 52 distributes the first liquid and the second liquid to the head 60 side.

[0030] The packing 54 is a disk-shaped rubber sheet with a plurality of holes, and is made of, for example, chloroprene rubber. The packing 54 is provided so as to contact the equipment-side discharge part 52 from the other end side in the width direction of the equipment-side discharge part 52, and prevents liquid leakage between the equipment-side discharge part 52 and a socket base 56 described below. The packing 54 is provided at a position not covering the first equipment-side flow path 521, the second equipment-side flow path 522, and the screw hole 523.

[0031] 3(a) is a front view of a socket base 56 of a gun 10 according to an embodiment of the present disclosure, and (b) is a cross-sectional view taken along the line S3-S3 of FIG. 3(a). As shown in FIG. 3(b), the socket base 56 is disk-shaped with a plurality of holes, and is inserted into the machine-side discharge part 52 from the other end side of the machine-side discharge part 52, and comes into contact with the packing 54 on one surface. The socket base 56 comes into contact with a head 60, which will be described later, on the other surface opposite to the one surface that comes into contact with the packing 54. The material of the socket base 56 is, for example, PC (polycarbonate) resin or the like.

[0032] The socket base 56 is a disk-shaped base material provided with a seal member 561, a protrusion 562, a hole 563, a screw hole 564, and a positioning portion 565. The seal member 561 is an annular elastic body, for example, an O-ring. As shown in FIG. 3(b), the seal member 561 is replaceably provided on the socket base 56 and suppresses liquid leakage from a hole 563 described later. The protrusion 562 is a plate-like body provided in the center of the socket base 56 and standing up from the other surface of the socket base 56, and is used to position the valve plug 80 in the head 60. As shown in FIG. 3(a), the hole 563 is a stepped shape provided in a pair at a distance in the depth direction so as to sandwich the protrusion 562, and includes a small diameter portion provided on one surface side (left side of FIG. 3(b)) and a large diameter portion provided on the other surface side (right side of the same figure). The hole 563 is provided at a position corresponding to the first equipment-side flow path 521 and the second equipment-side flow path 522 of the equipment-side discharge part 52, and the first liquid and the second liquid can flow through the hole 563. A seal member 561 is provided between the small diameter portion and the large diameter portion of the hole 563.

[0033] As shown in FIG. 3(a), the screw holes 564 are a pair of through holes provided at different positions from the holes 563 and spaced apart in the width direction (vertical direction in FIG. 3(a)) so as to sandwich the protrusion 562, and no threads are cut on the inner surface. The screw holes 564 are provided at positions corresponding to the screw holes 523 of the equipment-side discharge part 52, and a screw (not shown) can be inserted in the width direction (from the front to the back in FIG. 3(a)). The screw (not shown) is fastened to the screw hole 523 of the equipment-side discharge part 52 through the screw hole 564, so that the equipment-side discharge part 52, the packing 54, and the socket base 56 are integrated. The distance between the pair of screw holes 564 is longer than the distance between the pair of holes 563.

[0034] The alignment portion 565 is a notch provided on the outer periphery of the base material, on one surface side from the other surface. The alignment portion 565 engages with a protrusion 87 on the valve plug 80 described below, making it easy to align the head 60 with the support portion 50 and preventing the generation of a mixed liquid inside the support portion 50 due to an assembly error.

[0035] The nut portion 58 (see FIG. 9) is cylindrical with a hole on the bottom surface. With the head 60, which will be described later, inserted into the hole on the bottom surface, the male thread 524 of the machine-side discharge portion 52 is fastened to a female thread (not shown) provided on the inner peripheral surface of the nut portion 58, thereby forming a unit between the head 60 and the support portion 50. In other words, the nut portion 58 allows the head 60 to be removed from the support portion 50 and replaced.

[0036] 4 is a cross-sectional view of a head 60 according to an embodiment of the present disclosure. The head 60 includes a nozzle 70, a valve plug 80 as an example of a housing, and a valve 90 as an example of a check valve. The head 60 mixes the first liquid and the second liquid pressure-fed by the pump 30 from the grip portion 20 side of the gun 10, and discharges the mixed liquid from the tip.

[0037] (Nozzle 70) 5 is a cross-sectional view of a nozzle 70 constituting the head 60 according to an embodiment of the present disclosure. The nozzle 70 is cylindrical and has a function of mixing the first liquid and the second liquid therein. The nozzle 70 has a cylindrical portion 72, a storage portion 74, a tip portion 76, and a cover portion 78 as an example of an elastic body as shown in FIG.

[0038] The cylindrical portion 72 has a twisted portion 721 and a recessed portion 722, and is cylindrical and extends in the width direction of the gun 10. The cylindrical portion 72 mixes the first liquid and the second liquid. The material of the cylindrical portion 72 is, for example, PC (polycarbonate) resin or PET (polyethylene terephthalate) resin. The cylindrical portion 72 has a twisted portion 721 in one section inside the cylindrical portion 72. The twisted portion 721 may be formed by a known method. For example, the twisted portion 721 has a shape twisted at a predetermined angle and direction for each predetermined distance. The twisted portion 721 is inserted into the cylindrical portion 72 from the storage portion 74 side. The recessed portion 722 is a groove formed at the end of the cylindrical portion 72 and opens to the tip portion 76 side described later, and has a positioning function for the cover portion 78.

[0039] The accommodation section 74 is a bottomed cylindrical base having a hole on the bottom surface, and is formed continuously with the tubular section 72. The accommodation section 74 is provided with a seal member 741, a seat portion 742, and a groove portion 743 on the base. The seal member 741 is an elastic body formed in an annular shape, and is replaceably provided on the base 740, and suppresses liquid leakage from the inside to the outside of the base in the state of the nozzle 70 described later. For example, the seal member 741 is an O-ring. The seat portion 742 is provided on the outer periphery side of the tubular section 72, and functions as a seat surface for the seal member 741. The groove portion 743 is a pair of opposing grooves provided on the inner periphery of the base, and is formed in a direction away from the tubular section 72 in the width direction from the end of the tubular section 72. The groove portion 743 engages with the valve plug 80 described later, and the nozzle 70 and the valve plug 80 are integrated. In other words, the nozzle 70 is removably attached to the valve plug 80.

[0040] The tip portion 76 is a cone-shaped body having a through hole 761 in the center and a recess on the outer circumferential surface, and is internally connected to the cylindrical portion 72, and is formed on the opposite side of the storage portion 74 across the cylindrical portion 72. The tip portion 76 is inserted into a discharged portion (not shown) to discharge the mixed liquid. The through hole 761 is a hole that penetrates from the end on the cylindrical portion 72 side to the tip, and the mixed liquid in which the first liquid and the second liquid are mixed is pumped into the through hole 761. The recess on the outer circumferential surface of the tip portion 76 extends over the outer circumferential surface. As for the inner diameter of the tip portion 76, the inner diameter at the end on the cylindrical portion 72 side is formed to be the same as or smaller than the inner diameter at the end of the cylindrical portion 72, and the inner diameter gradually decreases from the end on the cylindrical portion 72 side toward the tip.

[0041] As shown in FIG. 4, the cover portion 78 is a cylindrical body and an elastic body attached to the outer periphery of the tip portion 76. For example, the material of the cover portion 78 is a thermoplastic elastomer or the like. The length from one end to the other end of the cover portion 78 (the length in the width direction in FIG. 4) is shorter than the length in the width direction of the tip portion 76. In other words, when one end of the cover portion 78 is inserted into the recess 722 of the cylindrical portion 72, the tip of the tip portion 76 protrudes from the other end of the cover portion 78. When the gun 10 with the cover portion 78 attached to the outer periphery of the tip portion 76 is inserted into the discharged portion, the movement of the cover portion 78 in the width direction is restricted by the recess 722, and the cover portion 78 itself is elastically deformed in the width direction, so that the cover portion 78 bites into the discharged portion.

[0042] (Valve plug 80) In FIG. 6, (a) is a front view of a valve plug 80 constituting a head 60 according to an embodiment of the present disclosure, and (b) is a cross-sectional view taken along the line S6-S6 in FIG. 6(a). As shown in FIG. 6(b), the valve plug 80 is a cylindrical body extending in the width direction, and its inside is partitioned to suppress mixing of the first liquid and the second liquid. The valve plug 80 connects the socket base 56 of the support part 50 to the nozzle 70. The valve plug 80 is configured by including a first flow path 81, a second flow path 82, a wall 83 as an example of a wall part, an inner claw part 84, an outer claw part 85, a groove 86, a protrusion 87, and a spring retainer 88 as an example of a plate in a cylindrical body. The material of the valve plug 80 is, for example, PP (polypropylene) resin.

[0043] The first flow path 81 is a flow path for the first liquid provided inside a bottomed cylindrical body with the bottom on the upstream side, and guides the first liquid pumped from the first equipment side flow path 521 on the upstream (pump 30) side to the downstream (nozzle 70). The second flow path 82 is a flow path for the second liquid provided inside the cylindrical body, and guides the second liquid pumped from the second equipment side flow path 522 on the upstream (pump 30) side to the downstream (nozzle 70).

[0044] The first flow path 81 and the second flow path 82 are composed of separate independent pipes protruding from the bottom of the cylindrical body to the upstream side, and these pipes are arranged at positions corresponding to the pair of holes 563 of the socket base 56. As shown in Fig. 6(a) and Fig. 6(b), the first flow path 81 and the second flow path 82 are independent flow paths formed in a semi-cylindrical shape sharing a wall 83 inside the cylindrical body, and it can be said that the cylindrical body is partitioned into the first flow path 81 and the second flow path 82 by the wall 83. In other words, the first flow path 81 and the second flow path 82 are both shaped by connecting a pipe and a semi-cylindrical body, and the downstream parts of the first flow path 81 and the second flow path 82 form an installation area for a valve 90 described later inside the cylindrical body. The wall 83 is a plate-like body formed inside the cylindrical body, extending from the end opposite to the end on the nozzle 70 side toward the end on the nozzle 70 side, and partitioning the first flow path 81 and the second flow path 82 in the depth direction. The wall 83 is formed closer to the end of the cylindrical body on the socket base 56 side than the end of the cylindrical body on the nozzle 70 side, and a surface 831 is formed on the end on the nozzle 70 side.

[0045] The first flow path 81 and the second flow path 82 have tapered portions 811 and 821, respectively, upstream of the wall 83. The flow path diameters of the first flow path 81 and the second flow path are formed to be larger downstream of the tapered portions 811 and 821 than upstream of the tapered portions 811 and 821.

[0046] The inner claw portion 84 is formed in a claw shape that stands up along the inner circumferential surface of the cylindrical body toward the center C of the cylindrical body. The inner claw portion 84 has a surface portion 841 that faces the surface 831 of the wall 83, and supports a spring retainer 88, which will be described later.

[0047] The outer claw portion 85 is formed in a claw shape standing up along the depth direction on the outer periphery of the cylindrical body. The height of the outer claw portion 85 decreases from the upstream to the downstream of the first flow path 81 and the second flow path 82. The outer claw portion 85 is engageable with the groove portion 743 of the storage portion 74 of the nozzle 70.

[0048] The groove 86 is formed on the outer surface of the cylindrical body between the first flow path 81 and the second flow path 82, and opens in the opposite direction to the extension direction (width direction) of the wall 83. The groove 86 is capable of receiving the protrusion 562 of the socket base 56 of the support part 50, and the groove 86 receiving the protrusion 562 positions the valve plug 80 and the support part 50.

[0049] 6(a) and 8(b), the projection 87 is on the outer surface of the cylindrical body and stands in the opposite direction to the extending direction (width direction) of the wall 83. The projection 87 engages with the alignment portion 565 of the socket base 56 of the support portion 50, thereby positioning the valve plug 80 and the support portion 50. While the groove 86 positions the valve plug 80 and the support portion 50 even in a state where the phase is reversed by 180°, the projection 87 uniquely positions the valve plug 80 and the support portion 50.

[0050] 7A and 7B are a front view and a right side view, respectively, of the spring retainer 88 of the head 60 according to the embodiment of the present disclosure. As shown in FIG. 7A, the spring retainer 88 is a cross-shaped plate, and the spring retainer 88 is provided with a convex portion 881, a notch 882, and a central portion 883 in a plate-like cross body, and is removably assembled to the inside of the valve plug 80. As shown in FIG. 7B, one surface of the cross body (the surface on the right side in the width direction) is flat and abuts against a surface portion 841 of the inner claw portion 84. In this way, the spring retainer 88 supports the valve 90, which will be described later. In other words, the spring retainer 88 supports the valve 90 with a part of it (the convex portion 881, which will be described later).

[0051] The convex portion 881 is a disk-shaped protrusion, and two of them are formed apart from each other in the depth direction of the cross-shaped body. The convex portion 881 is formed at a position facing the first flow path 81 and the second flow path .

[0052] 7(a), the notches 882 are four regions spaced apart from one another on the outer circumferential surface of the cross-shaped body. The notches 882 form spaces between the inner circumferential surface of the valve plug 80 and the outer circumferential surface of the spring retainer 88 when the valve plug 80 is assembled into the valve plug 80. These spaces form part of the first flow path 81 and the second flow path 82.

[0053] As shown in FIG. 7(b), the central portion 883 is a flat portion formed on the other surface (the surface on the left side in the width direction) and is located between the two protruding portions 881. The central portion 883 abuts against the surface 831 of the wall 83. By the central portion 883 abutting against the surface 831, the first flow path 81 and the second flow path 82 are separated as independent flow paths from the other surface to the one surface of the central portion 883. In other words, the spring retainer 88 separates the first flow path 81 and the second flow path 82 in the same manner as the wall 83, so that the first liquid flowing through the first flow path 81 and the second liquid flowing through the second flow path 82 are caused to flow to the nozzle 70 at the other portion of the spring retainer 88.

[0054] (Valve 90) The valve 90 will now be described. The valve 90 suppresses backflow of the first liquid and the second liquid flowing respectively inside the first flow path 81 and the second flow path 82. In Fig. 8, (a) is a cross-sectional view of a state in which the valve 90 is incorporated into the valve plug 80 constituting the head according to the embodiment of the present disclosure, and (b) is a cross-sectional view taken along S8-S8 in Fig. 8(a) when the valve 90 is biased by the first liquid.

[0055] 8(a), the valve 90 includes a valve body 92 and a spring 94. The valve body 92 has a part formed in a conical shape on the upstream side, and the maximum outer diameter of the valve body 92 is larger than the diameter of the pipe parts of the first flow path 81 and the second flow path 82, and the valve body 92 is formed smaller than the space of the semicircular parts of the first flow path 81 and the second flow path 82. One end of the valve body 92 abuts against a tapered part 811 of the first flow path 81 as a valve seat and a tapered part 821 of the second flow path 82 as a valve seat, thereby closing the first flow path 81 and the second flow path 82. The other end of the valve body 92 is supported by a spring 94.

[0056] The spring 94 is a compression coil spring, one end of which supports the valve body 92 and the other end of which is supported by the spring retainer 88 of the valve plug 80. The spring 94 is accommodated in the valve plug 80 in a state compressed further than its natural length. In other words, when the first and second liquids are not being pumped from the first flow path 81 and the second flow path 82, the spring 94 brings the valve body 92 into contact with the tapered portions 811 and 821, and when the first and second liquids are being pumped, the spring 94 is further compressed together with the valve body 92 by the liquid pressure. The spring 94 is supported so as to be wound around the outer periphery of the spring retainer 88.

[0057] The gun 10 and head 60 are constructed as described above.

[0058] (Action and effect) In Figure 9, (a) is a top cross-sectional view in which the valve 90 is blocking the first flow path 81 and the second flow path 82, and Figure 9(b) is a top cross-sectional view in which the valve of the first flow path is opened by the first liquid and the valve of the second flow path is blocked.

[0059] First, when an operator holds the gun 10 and simply presses the tip 76 of the nozzle 70 against the part to be discharged, the first liquid and the second liquid are not pressure-fed from the container 40, and the state of Fig. 9(a) is maintained inside the gun 10. The switch 22 of the gun 10 is maintained in the off position.

[0060] Next, when the operator moves the switch 22 of the gun 10 to the ON position, power is supplied from the battery 24 to drive the pump 30. When the pump 30 is driven, the first liquid and the second liquid are alternately sucked up from the container 40, flow alternately through the first flow path 81 and the second flow path 82, and press the valve body 92 of the valve 90.

[0061] When the pressure of at least one of the first liquid and the second liquid exceeds the specified load of the spring 94, the spring 94 is further compressed, the valve body 92 separates from the tapered portion 811 or 821, and the spring 84 enters an open state. In the flow path in which the spring 94 is in an open state is located, the first liquid or the second liquid flows into the inside of the valve plug 80, passes through the spring retainer 88 downstream of the valve 90, and reaches the cylindrical portion 72 of the nozzle 70. In the example shown in FIG. 9(b), the first liquid F1 opens the valve 90, and the second liquid F2 does not open the valve 90. The pump 30 alternately pumps the first liquid F1 and the second liquid F2 to the head 60 independently, so that at the next timing, the second liquid F2 opens the valve 90, and the first liquid F1 does not open the valve.

[0062] When the first liquid and the second liquid thus independently and alternately pumped together meet at the twisted portion 721 of the cylindrical portion 72, a mixture of the first liquid and the second liquid is injected from the tip portion 76 into the portion to be discharged.

[0063] After the mixed liquid is injected into the discharged portion, when the operator moves switch 22 of gun 10 to the OFF position, a mixed liquid of at least the first liquid and the second liquid is present inside head 60. Since the mixed liquid has a hardening property, if left alone, hardening will progress inside nozzle 70, and eventually nozzle 70 will harden. Once nozzle 70 has hardened, new mixed liquid will not be supplied to nozzle 70 even if the operator moves switch 22 of gun 10 to the ON position again.

[0064] In the gun 10 and head 60 of this embodiment, the valve plug 80 has a valve 90, so that damage to the gun 10 body caused by the mixed liquid flowing back upstream of the valve plug 80 and solidifying can be suppressed.

[0065] Next, valves 90 are provided in each of first flow path 81 and second flow path 82. With the above configuration, it is possible to suppress damage to the gun 10 body caused by the mixture of the first and second liquids flowing back into a flow path where valves 90 are not provided and the entire valve plug 80 solidifying.

[0066] Next, the valve plug 80 is formed in the installation area of ​​the valve 90, and has a wall 83 that separates the first flow path 81 and the second flow path 82. According to the above-mentioned configuration, the liquids exist in an unmixed state in the installation area of ​​the valve 90, so that solidification of the mixed liquid inside the valve plug 80 can be suppressed.

[0067] Next, the valve plug 80 has the above-described spring retainer 88. With this configuration, the number of parts can be reduced compared to a configuration in which the parts for supporting the valve 90 and the parts for supplying each liquid to the nozzle 70 are separate.

[0068] Next, the nozzle 70 of the gun 10 is removably attached to the valve plug 80 configured as described above. With this configuration, if solidification occurs only inside the nozzle 70, the valve plug 80 can be removed from the nozzle 70 and only the nozzle 70 can be replaced.

[0069] The gun 10 has the cover part 78 configured as described above. According to this configuration, when the nozzle 70 is inserted into the part to be discharged, the cover part 78 bites into the part to be discharged, so that even when discharged at high pressure, the mixed liquid can be discharged more stably to the part to be discharged, compared to a configuration in which a cover part is not attached to the outer periphery of the tip of the nozzle 70.

[0070] Furthermore, the head 60 used in the gun 10 is equipped with a first flow path 81 that can be attached to the outlet of the pump 30 and that can pump a first liquid from a first equipment side flow path 521 of the pump, a second flow path 82 that can pump a second liquid that solidifies by mixing with the first liquid from a second equipment side flow path 522 of the pumping section, a valve 90 provided in at least one of the first flow path 81 and the second flow path 82, a valve plug 80 formed downstream of the valve 90 and having a wall 83 that separates the first flow path 81 and the second flow path 82, and a nozzle 70 from which the first liquid and the second liquid flowing in from the valve plug 80 are mixed and discharged.

[0071] According to the above-described configuration, when pumping a plurality of liquids that solidify when mixed, the cleaning range of the pump 30 can be limited, compared to a configuration in which the entire pump 30 is cleaned.

[0072] (Modification) Although the present disclosure has been described in detail with respect to specific embodiments, it will be apparent to those skilled in the art that the present disclosure is not limited to such embodiments, and that the present disclosure can take on various other embodiments within the scope of the present disclosure.

[0073] Although materials are described for some components of the present embodiment, materials different from the described materials may be used. For example, the resin portion may be replaced with a metal.

[0074] Although the battery 24 is provided below the grip portion 20 in the above embodiment, the present invention is not limited to this. For example, the battery 24 may be built into the grip portion 20, or may be supplied with power from an external power source via a power cord.

[0075] Although an electric pump is used as the pump 30, the present invention is not limited to this. For example, a hydraulic pump, a pneumatic pump, or the like may be used.

[0076] The container 40 may be a plurality of containers according to the number of liquids, or a single container may be divided by providing a partition. In addition, the container 40 is flexible, but is not limited to this.

[0077] In the above embodiment, the machine-side discharge portion 52 and the socket base 56 are provided independently in the support portion 50, but this is not limiting. For example, the machine-side discharge portion 52 may have the function of the socket base 56 by itself. In this case, it is expected that the number of parts and the weight can be reduced. In addition, the nut portion 58 in the support portion 50 fixes the support portion 50 and the head 60, but this is not limiting. For example, the support portion 50 may have an engaging portion and the head 60 may have an engaged portion, and the engaging portion and the engaged portion may directly engage with each other. In this case, it is expected that the number of parts and the weight can be reduced.

[0078] The shape of the cover portion 78 is not limited to a cylindrical body attached to the outer periphery of the tip portion 76. For example, a block-shaped body having a through hole formed therein may be attached to the outer periphery of the tip portion 76.

[0079] Although the spring retainer 88 is a cross-shaped plate, the present invention is not limited to this and may be, for example, a polygonal shape such as a star shape.

[0080] Although a compression coil spring is used for the valve 90, this is not limited thereto. Any other spring may be used as long as it is configured to bias the valve from the downstream side to the upstream side of the liquid flow. Although the valve 90 is supported by the spring retainer 92, this is not limited thereto. For example, the valve 90 may be supported by the inner wall of the valve plug 80. [Explanation of symbols]

[0081] 10 Gun (Tool for discharging multiple liquid mixtures) 20 Gripping part 30 Pump (pressure delivery section) 40 containers 50 Support part 60 Head (Head for multi-liquid mixing and dispensing tools) 70 Nozzles 78 Cover part (elastic body) 80 Valve plug (housing) 83 Wall (wall section) 84 Inner claw 85 Outer claw part 88 Spring holder (plate) 90 Valve (check valve)

Claims

1. A gripping portion that is gripped by an operator; a pressure-feeding unit provided on the gripping unit and configured to pump the first liquid and the second liquid alternately and independently when driven; a housing that is detachably attached to an outlet of the pressure-feeding unit, the housing having a first flow path through which the first liquid is pressure-fed from a first outlet of the pressure-feeding unit, a second flow path through which the second liquid is pressure-fed from a second outlet of the pressure-feeding unit, and a check valve provided in at least one of the first flow path and the second flow path; a nozzle through which the first liquid and the second liquid flowing in from the housing are mixed and discharged; A multi-liquid mixing and dispensing tool equipped with the above-mentioned.

2. The check valve is provided in each of the first flow path and the second flow path. The multi-liquid mixture discharging tool according to claim 1.

3. The housing has a wall portion formed in an installation area of ​​the check valve and separating the first flow path and the second flow path. The multi-liquid mixture discharging tool according to claim 1.

4. the housing has a plate shape, a part of which supports the check valve, and another part of which allows the first liquid and the second liquid to flow to the nozzle. The multi-liquid mixture discharging tool according to claim 1.

5. The nozzle is removably attached to the housing. The multi-liquid mixture discharging tool according to claim 1.

6. The nozzle has an elastic body attached to the outer periphery of the tip thereof. The multi-liquid mixture discharging tool according to any one of claims 1 to 5.

7. a housing that can be attached to an outlet of a pressure-feeding part of a multi-liquid mixture discharging tool, the housing having a first flow path that can pump a first liquid from a first outlet of the pressure-feeding part, a second flow path that can pump a second liquid that solidifies by being mixed with the first liquid from a second outlet of the pressure-feeding part, a check valve provided in at least one of the first flow path and the second flow path, and a wall portion that is formed downstream of the check valve and separates the first flow path from the second flow path; a nozzle through which the first liquid and the second liquid flowing in from the housing are mixed and discharged; A head of a multi-liquid mixing and discharging tool comprising:

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