JP2006334496A - Apparatus for mixing and ejecting two liquids - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for mixing and ejecting two liquids capable of controlling the nozzle temperature in a short period of time. <P>SOLUTION: The apparatus 1 for mixing and ejecting two liquids equipped with a nozzle 6 for intermittently ejecting a curable material of a two-liquid mixing type that is cured and used by mixing separately stored two species of materials immediately prior to its application has a heating section 7 that contacts the nozzle 6 upon ejecting the curable material and detaches itself from it upon suspending its ejection and a cooling section 8 that contacts the nozzle 6 upon suspending the ejection of the curable material and detaches itself from it upon ejecting the same, with the heating section 7 being always kept at a high temperature sufficient to increase the reaction rate of the curable material and the cooling section 8 being always kept at a low temperature sufficient to decrease the reaction rate of the curable material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a two-component mixed discharge device for discharging a two-component mixed type curable material that is used by mixing two types of materials.

  Polymer materials such as epoxy and urethane, which are cured by mixing two types of materials, are widely used in various fields as adhesives, insulating materials, sealing materials, etc., mainly mixing the main agent and curing agent. And then cured. As a device for mixing and discharging these two kinds of materials and injecting or applying them to a necessary portion, there has conventionally been a two-liquid mixing and discharging device as shown in FIG.

  The two-liquid mixing / discharging device 300 is a device for mixing and discharging the main agent 302 and the curing agent 303. The main agent 302 and the curing agent 303 are respectively stored in a main agent tank 312 and a curing agent tank 313 installed in the cooling device 301, and are supplied to a mixing device 307 including a screw 306 via a pump 304 and a cylinder 305. Supplied. A mixed material composed of the main agent 302 and the curing agent 303 mixed by the mixing device 307 is discharged from the nozzle 308.

  As a mixing device for uniformly mixing two liquids, roughly divided, a dynamic mixer that mixes with a high-speed rotary blade, etc., and fins for dividing the liquid are provided in multiple stages in the flow path to split and merge the two liquids. And a static mixer that mixes by repeating. The static mixer has a simple mechanism, but it is necessary to increase the number of division fins in order to improve the uniform mixing property, and the dynamic mixer is advantageous from the viewpoint of compactness to uniformly mix a small amount. is there.

  However, when a dynamic mixer is used, the temperature of the mixed material rises due to shear heat generation in the mixing section. Polymer materials that are cured by mixing two liquids generally increase the curing rate and shorten the pot life (potential life) when the temperature rises. When the length is longer, the reaction of the mixed material proceeds during the discharge pause and is hardened in the nozzle, which restricts the discharge interval. On the other hand, since the reaction speed becomes slower as the temperature is lower, the discharge interval can be set longer if the temperature of the mixed material is set lower. However, if the temperature of the mixed material is low, the reaction speed and reaction state after discharge are affected, and the working efficiency is lowered.

  As a solution to such a problem, a method of controlling the temperature of the mixed material that passes through or stays in the nozzle by heating and cooling the nozzle has been proposed (for example, Patent Document 7). As such a nozzle heating / cooling method, as shown in FIG. 10, there is a temperature adjustment mechanism in which a water-cooled heat exchanger 309 is installed around the nozzle 308 to alternately flow cooling water and hot water.

  When discharging the mixed material, warm water is flown to heat the nozzle, and the temperature of the mixed material is increased to increase the curing rate of the mixed material, thereby improving work efficiency. By cooling the nozzle and lowering the temperature of the mixed material to lower the curing speed of the mixed material, the working life is lengthened and the restriction on the discharge interval is eased.

Japanese Patent Laid-Open No. 5-431 Japanese Utility Model Publication No. 5-2926 JP-A-6-339952 JP-A-9-193226 JP-A-9-286046 Japanese Patent Laid-Open No. 11-034126 Japanese Patent Application Laid-Open No. 2000-202884 Japanese Patent No. 338850

  However, in such a temperature control mechanism, when heating and cooling are repeated alternately, the cooling water and the hot water flow alternately in the same flow path. Therefore, it is necessary to heat and cool the temperature control mechanism itself at each switching. It takes time to adjust the temperature. In addition, a device for producing cooling water / hot water and a device for circulating the water are required, and the whole becomes large.

  On the other hand, a configuration has been proposed in which a Peltier element is used for heating and cooling the nozzle tip and the applied voltage direction is switched to simplify heating and cooling (for example, Patent Document 1). It takes several minutes for cooling and cannot be applied to materials with a high reaction rate. Further, in such a cycle operation in which heating / cooling is frequently repeated, the life of the Peltier element is significantly shortened.

  Furthermore, it is conceivable to change the characteristics of the material in order to increase the pot life. However, even if the material characteristics are changed, the curing rate after pouring / coating also decreases, and the working efficiency decreases. In addition, there is a limit to lengthening the pot life due to material characteristics.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a two-liquid mixing and discharging apparatus capable of adjusting the temperature of a nozzle in a short time.

  In order to achieve the above object, the two-component mixing / discharging device according to the present invention intermittently uses a two-component mixed curable material that is used by mixing and curing two types of separately stored materials immediately before use. In the two-liquid mixing / discharging device provided with a nozzle for discharging to the heating unit, the heating unit that is in contact with the nozzle when discharging the curable material and is in non-contact with the nozzle when discharging of the curable material is stopped, A cooling unit that comes into contact with the nozzle when discharge of the curable material is stopped and is not in contact with the nozzle when the curable material is discharged, and the heating unit has a high temperature at which a reaction rate of the curable material increases. The cooling part is always kept at a low temperature at which the reaction rate of the curable material is reduced.

  In this way, during intermittent ejection, the heating unit previously maintained at a high temperature and the cooling unit previously maintained at a low temperature are alternately brought into contact with the nozzle, so that the temperature of the nozzle and the curable material in the nozzle can be reduced for a short time. Can be changed. That is, the curing rate of the curable material can be changed in a short time. Therefore, in switching from the resting state to the discharging state, the material can be heated in a short time, and the curing speed can be accelerated in a short time. And since a material can be cooled in a short time at the time of a stop, a cure rate can be reduced and a pot life can be extended, and thereby a stop time can be taken long. In addition, since the pot life can be extended, a material having a high reaction rate can be applied, and the range of material selection is widened.

  The nozzle has a substantially cylindrical shape, and the heating part and the cooling part are each composed of a pair of members having substantially semicircular arc-shaped concave portions facing each other and having the same diameter as the outer diameter of the substantially cylindrical shape. , In the opposing direction of the concave portion, the inner peripheral surface is brought into contact with the outer peripheral surface of the nozzle when the concave portions facing each other come into contact with each other, and the concave portions of the heating portion and the cooling portion are formed. It is also preferable that the facing directions are orthogonal to each other.

  The nozzle has a substantially cylindrical shape, and the heating unit and the cooling unit include a substantially semicircular arc-shaped recess having the same diameter as the outer diameter of the substantially cylindrical shape and facing each other around the nozzle, The concave portion of the heating unit and the concave portion of the cooling unit are integrated with the nozzle so as to be integrally movable with respect to the nozzle in the opposing direction of the concave portion. It is also preferable to alternately contact the outer periphery of the nozzle by reciprocating relative to each other.

  As described above, according to the present invention, the material whose curing speed is accelerated can be discharged in a short time, so that the working efficiency can be improved. In addition, since the pause time can be extended, the restriction on the discharge interval can be relaxed.

  The best mode for carrying out the present invention will be exemplarily described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. .

  With reference to FIGS. 1 to 3, the two-liquid mixing and discharging apparatus according to the first embodiment will be described. FIG. 1A is a schematic diagram illustrating a configuration of a two-liquid mixing and discharging apparatus according to the present embodiment. FIG.1 (b) is typical sectional drawing which shows the AA cross section in Fig.1 (a). FIG. 2 is a schematic cross-sectional view showing a heating state of the nozzle portion of the two-liquid mixing and discharging apparatus according to the present embodiment in the AA cross section in FIG. FIG. 3 is a schematic cross-sectional view showing a cooling state of the nozzle portion of the two-liquid mixing and discharging apparatus according to the present embodiment in the AA cross section in FIG.

  The two-component mixing and discharging apparatus 1 according to the present embodiment discharges a mixed material, a main agent tank 12 that stores the main agent 2, a curing agent tank 13 that stores the curing agent 3, a mixing device 5 that includes the screw 4, and the like. A nozzle 6, a heater 7, and a water cooling device 8 are provided.

  The two-component mixing and discharging apparatus 1 is a two-component mixed type curable material (for example, an adhesive, an insulating material, a sealing material, etc.) that mixes and cures the main agent 2 and the curing agent 3 stored separately before use. This is a device for discharging a polymer material such as epoxy and urethane widely used in various fields.

  The main agent tank 12 and the curing agent tank 13 are installed in the cooling device 11, and the main agent 2 and the curing agent 3 are kept at a low temperature.

  The main agent tank 12 and the curing agent tank 13 are connected to the mixing device 5 via the pump 9 and the cylinder 10, and a predetermined amount of the main agent 2 and the curing agent 3 are supplied to the mixing device 5. Various types of pumps can be applied as the pump 9, and an appropriate mechanism can be used according to the discharge flow rate and the quantitative accuracy.

  The main agent 2 and the curing agent 3 supplied to the mixing device 5 are stirred and mixed by the rotation of the screw 4. As the mixing device 5, a screw 7 as in this embodiment, a dynamic mixer that stirs and mixes two liquids by rotation of a high-speed rotary blade, etc., and fins for dividing the liquid are provided in multiple stages in the flow path. A static mixer that mixes by repeating the division and merging of the two liquids can also be used.

  The mixed material mixed by the mixing device 5 is discharged from the nozzle 6. As the nozzle 6, an appropriate shape / dimension can be selected according to the shape / dimension of the injection / application portion.

  A heater 7 and a water cooling device 8 are installed around the nozzle 6 having a substantially cylindrical shape. The heater 7 functions as a heating unit for heating the nozzle 6 to increase the curing reaction rate of the mixed material in the nozzle 6. Further, the water cooling device 8 functions as a cooling unit for cooling the nozzle 6 with the cooling water 82 flowing inside to reduce the curing reaction rate of the mixed material in the nozzle 6.

  The heater 7 is composed of a pair of members having substantially semicircular arc-shaped peripheral surfaces (concave portions) 71 facing each other around the nozzle 6, and is provided so as to be able to contact and separate from the nozzle 6. Each peripheral surface 71 has an inner diameter that is the same as the outer diameter of the nozzle 6, and the inner periphery that contacts the outer peripheral surface of the nozzle 6 in a state in which the edges of the peripheral surfaces 71 are in contact with each other and are closest to the nozzle 6. Form a surface.

  Similar to the heater 7, the water-cooling device 8 is composed of a pair of members having substantially semicircular arc-shaped peripheral surfaces (concave portions) 81 facing each other around the nozzle 6, and can be contacted and separated from the nozzle 6. Is provided. Each peripheral surface 81 also has an inner diameter that is the same as the outer diameter of the nozzle 6, and the inner surface that contacts the outer peripheral surface of the nozzle 6 in a state where the edges of the peripheral surfaces 81 come into contact with each other and are closest to the nozzle 6. Form a peripheral surface.

  As shown in the figure, the concave portion 71 of the heater 7 and the concave portion 81 of the water cooling device 8 are provided so as to face each other in directions orthogonal to each other. The heater 7 and the water cooling device 8 are alternately brought into contact with the nozzle 6 so as to be in contact with the nozzle 6 alternately without interfering with each other.

  At the time of discharging the mixed material, as shown in FIG. 2, the water cooling device 8 is separated from the nozzle, and the heater 7 contacts the nozzle 6 to heat the nozzle 6 and the mixed material in the nozzle 6. This heating increases the temperature of the mixed material and increases the reaction rate, so that the curing rate of the mixed material after injection and application is increased. Therefore, the cycle time of intermittent discharge operation can be shortened.

  When the discharge of the mixed material is stopped, as shown in FIG. 3, the heater 7 is separated from the nozzle 6, and the water cooling device 8 contacts the nozzle 6 to cool the nozzle 6 and the mixed material in the nozzle 6. By this cooling, the temperature of the mixed material is lowered and the reaction rate is lowered, so that the pot life of the mixed material is lengthened, and the progress of the curing of the mixed material in the nozzle 6 during the discharge suspension can be suppressed. Therefore, the restriction on the discharge interval in intermittent operation can be relaxed.

In the present embodiment, the heater 7 and the water cooling device 8 always heat the nozzle 6 to increase the curing reaction rate of the mixed material in the nozzle 6, whether it contacts the nozzle 6 or not. And a temperature at which the nozzle 6 can be cooled to reduce the curing reaction rate of the mixed material in the nozzle 6. That is, it is kept at a predetermined high temperature and low temperature before contacting the nozzle 6. Therefore, the temperature around the nozzle 6 can be immediately switched from a high temperature to a low temperature or from a low temperature to a high temperature by alternately bringing the heater 7 and the water cooling device 8 into contact / non-contact with changes in the intermittent operation state. . In addition, time for changing the temperature of the temperature control device itself from a high temperature to a low temperature or from a low temperature to a high temperature as in the prior art becomes unnecessary. That is, in switching from the resting state to the discharging state, the material can be heated in a short time, and the curing speed can be accelerated in a short time. Therefore, the waiting time until the start of discharge can be shortened, and the time required for the manufacturing process can be shortened. In addition, since the material can be cooled in a short time during the pause, the curing rate can be reduced and the pot life can be extended, whereby the pause time can be increased. Therefore, the present invention can be suitably applied to cases where the downtime must be long. In addition, since the pot life can be extended, a material having a high reaction rate can be applied, and the range of material selection is widened.

  In this embodiment, a sheet heating element, hot water, a Peltier element, high frequency induction heating, or the like can be used as the heating mechanism of the nozzle 6. Moreover, as a cooling mechanism, air cooling, a Peltier device, a metal block, etc. can be utilized besides water cooling. When using a metal block, it can cool more effectively by providing a cooling mechanism such as water cooling or a Peltier element.

  With reference to FIGS. 4 to 8, the two-liquid mixing and discharging apparatus according to the second embodiment will be described. FIG. 4A is a front view of the two-liquid mixing and discharging apparatus according to the present embodiment. FIG. 4B is a bottom view of the two-liquid mixing and discharging apparatus according to the present embodiment. FIG. 5A is a front view showing a heating state of the nozzle portion of the two-liquid mixing and discharging apparatus according to the present embodiment. FIG. 5B is a bottom view showing the heating state of the nozzle of the two-liquid mixing and discharging apparatus according to the present embodiment. FIG.5 (c) is a front view which shows the cooling state of the nozzle of the 2 liquid mixing discharge apparatus concerning a present Example. FIG. 5D is a bottom view showing a cooling state of the nozzle of the two-liquid mixing and discharging apparatus according to the present embodiment. FIG. 6A is a front view showing an apparatus used for analysis and verification experiments of nozzle temperature control characteristics. FIG. 6B is a bottom view showing the apparatus used for the nozzle temperature adjustment specific analysis and verification experiment. FIG. 7 is a chart showing analysis and verification results of the temperature rise characteristics of the nozzle surface by the apparatus shown in FIG. FIG. 8 is a chart in which the time until the temperature reaches the same temperature as the hot plate with which the entire nozzle is brought into contact when the low temperature side hot plate and the high temperature side hot plate are alternately brought into contact with the nozzle is illustrated.

  The two-liquid mixing / discharging device 101 includes a mixing device 105 including a stirring spatula 104, a nozzle 106, a high temperature side hot plate 107, a low temperature side hot plate 108, and a Peltier element 109. The main agent 2 and the curing agent 3 stored in the main agent tank and the curing agent tank (not shown) are supplied to the mixing device 105 through a pump and a cylinder (not shown) so as to have a predetermined amount and a predetermined mixing ratio.

  Here, the main agent tank, the curing agent tank, the pump, and the cylinder, which are not illustrated, are the same as those in the above embodiment in terms of the configuration and operation, and thus the description thereof is omitted.

  The main agent 2 and the curing agent 3 supplied to the mixing device 105 flow in the nozzle 106 while being stirred and mixed by the stirring spatula 104 that rotates at high speed, and are discharged from the tip of the nozzle 106.

  The high temperature side hot plate 107 and the low temperature side hot plate 108 are arranged substantially in parallel with the nozzle 106 on both sides of the nozzle 106 having a substantially cylindrical shape, and are connected via a Peltier element 109 on one end side of both hot plates. Thus, a substantially U-shaped temperature control mechanism is configured. On the opposite surfaces of both hot plates sandwiching the nozzle 106, there are provided substantially semicircular arc-shaped concave portions 181 and 171 having the same diameter as the cylindrical outer diameter of the nozzle 106, and the concave portion 181 and the concave portion 171 are provided as nozzles. 106 are opposed to each other.

  A temperature adjustment mechanism including the high temperature side heat plate 107, the low temperature side heat plate 108, and the Peltier element 109 is provided so as to be capable of reciprocating relative to the nozzle 106 in a direction opposite to the concave portion 181 and the concave portion 171. And the recessed part 181 and the recessed part 171 will contact the side surface of the nozzle 106 alternately by the relative reciprocation of a temperature control mechanism.

Therefore, in order to cool the mixed material and reduce the curing rate during the suspension of the discharge of the mixed material, the temperature adjustment mechanism moves relative to the nozzle 106, as shown in FIGS. 5 (c) and 5 (d). As described above, the concave portion 181 of the low temperature side hot plate 108 is brought into contact with the side surface of the nozzle 106 to cool the nozzle 106 and the mixed material in the nozzle 106. In addition, during the discharge for the mixed material, the temperature control mechanism moves relative to the nozzle 106 in order to heat the mixed material and increase the curing rate, as shown in FIGS. 5 (a) and 5 (b). Then, the concave portion 171 of the high temperature side hot plate 107 is brought into contact with the side surface of the nozzle 106 to heat the nozzle 106 and the mixed material in the nozzle 106.

  The high temperature side hot plate 107 and the low temperature side hot plate 108 are heated and cooled in advance by the Peltier element 109, so that the nozzle 106 is always heated to contact the nozzle 106 to be in the non-contact state. The temperature at which the curing reaction rate of the mixed material can be increased and the temperature at which the nozzle 106 can be cooled to decrease the curing reaction rate of the mixed material in the nozzle 106 are maintained. Therefore, as described above, the high temperature side hot plate 107 and the low temperature side hot plate 108 are alternately brought into contact with the nozzle 106 in accordance with the change in the intermittent operation state, so that the temperature of the mixed material in the nozzle 106 and the nozzle 106 is reduced for a short time. Can be changed. Therefore, the cycle time of intermittent operation can be shortened.

  Here, the temperature rise characteristic of the nozzle surface was examined by the configuration shown in FIG. FIG. 6 is a front view and a bottom view of an experimental apparatus for analyzing and verifying the temperature rise characteristic of the nozzle surface opposite to the contact surface when the hot plate is brought into contact with the nozzle. Heating characteristics of the nozzle surface opposite to the contact surface by contacting a 40 ° C hot plate to the side of the nozzle 106 (outer diameter 5 mm, inner diameter 3 mm, length 30 mm) cooled to 15 ° C. I investigated. The result is shown in FIG. As shown in the chart of FIG. 7, the experimental result and the analysis result are in good agreement, and it was confirmed that the temperature of the nozzle surface on the opposite side to the side in contact with the hot plate can be increased at a high speed of about 20 seconds.

  In the present embodiment, the surfaces of the high temperature side hot plate 107 and the low temperature side hot plate 108 may be flat without providing the concave portions as shown in FIG. 6. However, the concave portions 171 and 181 are provided to Needless to say, increasing the contact area improves the heating and cooling rates.

  In the configuration of Example 2, the low temperature side hot plate was controlled to 10 ° C. and the high temperature side hot plate was controlled to 40 ° C. by the Peltier element, and the low temperature side hot plate and the high temperature side hot plate were alternately brought into contact with the nozzle. In some cases, the time until the entire nozzle reached the same temperature as the contacted hot plate was estimated. The result is shown in FIG. The time required for raising and lowering the temperature between 10 ° C and 40 ° C depends on the material of the nozzle. It is 10 seconds or more for SUS, but about 6 seconds for Western, about 2 seconds for brass, and about 1 second for duralumin. there were.

  From the above results, it was proved that the temperature can be adjusted in a short time according to the present invention.

  With reference to FIG. 9, a two-liquid mixing and discharging apparatus according to the third embodiment will be described. FIG. 9A is a front view of the two-liquid mixing and discharging apparatus according to the present embodiment. FIG. 9B is a bottom view of the two-liquid mixing and discharging apparatus according to the present embodiment.

  The two-liquid mixing / discharging device 201 includes a mixing device 205 including a stirring spatula 204, a nozzle 206, a high temperature side hot plate 207, a low temperature side hot plate 208, and a Peltier element 209. Moreover, the high temperature side hot plate 207 and the low temperature side hot plate 208 are provided with substantially semicircular arc-shaped concave portions 271, 281 having the same diameter as the cylindrical outer diameter of the nozzle 206, respectively. The main agent 2 and the curing agent 3 are stored in a main agent tank and a curing agent tank (not shown), and are supplied to the mixing device 205 through a pump and a cylinder (not shown) so as to have a predetermined amount and a predetermined blending ratio.

In the present embodiment, a radiator 210 and an air cooling fan 211 are attached to the surface of the high temperature side hot plate 207 opposite to the surface in contact with the nozzle 206 in order to stabilize the temperature control.

  Here, since the other configurations and operations in the present embodiment, and the configurations and operations of the main agent tank, the curing agent tank, the pump, and the cylinder, which are not shown, are the same as those in the above embodiment, the description thereof is omitted.

  Using the two-component mixing and discharging apparatus 201 according to this example, a two-component mixed curing type urethane rubber discharging test was performed. The mixing ratio of the main agent 2 and the curing agent 3 was 100: 45, and the supply temperature of the two liquids was about 40 ° C. The discharge conditions were intermittent discharge in which a discharge amount of 0.5 g was discharged in 5 seconds, and the rotation speed of the stirring spatula 204 was 2500 rpm. The hot plate was controlled so that the high temperature side 207 was 40 ° C. and the low temperature side 208 was 10 ° C., and the high temperature side hot plate 207 was brought into contact with the nozzle 206 during discharge and the low temperature side hot plate 208 was in contact with the nozzle 206 during discharge stop. As a result, the mixed material in the nozzle 206 did not start curing until the discharge stop time was about 3 minutes.

(Comparative example)
In this example, when the temperature was not adjusted by the Peltier element 209, the mixed material in the nozzle 206 started to be cured after about 20 seconds.

  From the above results, it was proved that the curing rate of the mixed material can be effectively changed by adjusting the temperature of the nozzle according to the present invention.

FIG. 1 is a schematic diagram illustrating the configuration of the two-liquid mixing and discharging apparatus according to the first embodiment. FIG. 2 is a schematic cross-sectional view showing a heating state of the nozzle portion of the two-liquid mixing and discharging apparatus according to the first embodiment in the AA cross section in FIG. FIG. 3 is a schematic cross-sectional view showing a cooling state of the nozzle portion of the two-liquid mixing and discharging apparatus according to the first embodiment in the AA cross section in FIG. FIG. 4 is a schematic diagram of a two-liquid mixing and discharging apparatus according to the second embodiment. FIG. 5 is a schematic diagram of the nozzle portion of the two-liquid mixing and discharging apparatus according to the second embodiment. FIG. 6 is a schematic diagram showing an apparatus used for analysis and verification experiments of nozzle temperature control characteristics. FIG. 7 is a chart showing analysis and verification results of the temperature rise characteristics of the nozzle surface. FIG. 8 is a chart in which the time until the temperature reaches the same temperature as the hot plate with which the entire nozzle is brought into contact when the low temperature side hot plate and the high temperature side hot plate are alternately brought into contact with the nozzle is illustrated. FIG. 9 is a schematic diagram of a two-liquid mixing and discharging apparatus according to the third embodiment. FIG. 10 is a schematic diagram of a two-liquid mixing and discharging apparatus according to the prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 2 liquid mixing and discharging apparatus 2 Main agent 3 Hardener 4 Screw 5 Mixer 6 Nozzle 7 Heater 71 Recess 8 Water cooling device 81 Recess 82 Cooling water 9 Pump 10 Cylinder 11 Cooling device 12 Main agent tank 13 Hardener tank 13

Claims (3)

In a two-component mixed discharge device including a nozzle for intermittently discharging a two-component mixed type curable material that is used by mixing and curing two types of materials stored separately before use,
A heating unit that comes into contact with the nozzle when discharging the curable material, and is in non-contact with the nozzle when the discharge of the curable material is stopped;
A cooling unit that comes into contact with the nozzle when the discharge of the curable material is stopped, and is in non-contact with the nozzle when the curable material is discharged;
The heating unit is always kept at a high temperature at which the reaction rate of the curable material increases,
The two-liquid mixing and discharging apparatus characterized in that the cooling section is always kept at a low temperature at which the reaction rate of the curable material is lowered. The nozzle has a substantially cylindrical shape,
Each of the heating part and the cooling part is composed of a pair of members having substantially semicircular arc-shaped recesses facing each other and having the same diameter as the substantially cylindrical outer diameter. And forming an inner peripheral surface that comes into contact with the outer peripheral surface of the nozzle when the opposing concave portions are in contact with each other,
2. The two-liquid mixing and discharging apparatus according to claim 1, wherein opposing directions of the concave portions of the heating unit and the cooling unit are orthogonal to each other. The nozzle has a substantially cylindrical shape,
The heating section and the cooling section include a substantially semicircular arc-shaped recess having the same diameter as the substantially cylindrical outer diameter and facing each other with the nozzle as a center, and can be relatively moved integrally with the nozzle. Provided,
The recess of the heating unit and the recess of the cooling unit alternately contact the outer periphery of the nozzle by the relative reciprocation of the heating unit and the cooling unit relative to the nozzle in the opposing direction of the recess. The two-liquid mixing and discharging device according to claim 1.

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