JP2001149838A - Coating device for two-part liquid mixed and cured sealing material and forming method of site forming gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the coating time for two-part liquid mixed and cured sealing material even when the environmental state is changed and secure the jet properties of the mixed liquid and bonding properties, sealing properties, or the like, after coating. SOLUTION: Based on the temperature (or humidity or both of them) of working site S monitored by a temperature sensor 41 (or a humidity sensor or both of them), a target mixing radio for the two-pat liquid is so set as to provide a given coating rate suitable for the monitoring result by a control device 50, and the delivery amount of Nemo(R) pumps 26A and 26B is controlled so that the mixing radio of the two-part liquid conforms to the target mixing ratio. The two-part liquid compressively transferred by the Nemo pumps 26A and 26B are mixed with a mixer 32, and the mixed liquid is jetted out of a jet nozzle 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for forming a gasket formed in-situ by mixing and curing a two-component mixed hardening material. The present invention relates to a technique for stabilizing a curing time.

[0002]

2. Description of the Related Art As a conventional two-liquid mixing type coating machine, for example, a two-liquid mixing type spraying apparatus disclosed in Japanese Patent Application Laid-Open No. 7-185409 has been proposed. In this device, while keeping the temperature of the two liquids constant by the heat retention heater, the flow rate of each liquid is measured, the pumping capacity is feedback-controlled based on the measurement result, and the mixing ratio of the two liquids is kept constant. The curing time of the mixed liquid is stabilized, and the discharge property of the mixed liquid and the adhesiveness or sealing property after application are obtained.

[0003]

As described above, in order to stabilize the curing time of a two-component mixed-curable sealing material, two
It is necessary to keep the mixing ratio of the liquid constant. However, if the environment such as temperature and humidity changes, the curing time of the two-component mixed-curable sealing material changes, and it becomes impossible to secure the discharge property of the mixed liquid and the adhesive property or sealing property after application.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to stabilize the curing time of a two-liquid mixed-curable sealing material even when the environmental conditions change, and It is an object of the present invention to provide a coating device for a two-component mixed-curing type sealing material and a method for forming a gasket in-situ, which can ensure the dischargeability and the adhesiveness or sealing property after coating.

[0005]

The means for achieving the above object and the effects thereof will be described below. The invention according to claim 1 is a mixer for mixing two liquids of a two-liquid mixed-curable sealing material, a pair of delivery pumps for delivering the two liquids to the mixer, and the mixers. In a two-liquid mixed-curing sealing material coating apparatus having a discharge nozzle for discharging a mixed liquid, a monitoring means for monitoring an environmental state, and an environmental state for monitoring a curing speed of the mixed liquid discharged from the discharge nozzle Setting means for setting a target mixing ratio of the two liquids so as to have a predetermined curing speed suitable for the first and second pumps, and a delivery amount of the pair of delivery pumps so that the mixing ratio of the two liquids matches the target mixing ratio The gist of the present invention is to provide a control means for controlling.

[0006] According to this configuration, the target mixing ratio of the two liquids is set by the setting means in accordance with the monitored environment.
Since the delivery amount of the pair of delivery pumps is controlled so that the mixture ratio of the liquid is the target mixture ratio, the curing time of the mixture discharged from the discharge nozzle falls within a predetermined time range, and the curing time is stable. As a result, the discharge property of the mixed solution and the adhesive property or sealing property after application are ensured.

According to a second aspect of the present invention, in the two-part mixed-curing type sealing material applying apparatus according to the first aspect, the environmental condition monitored by the monitor means is a temperature of a work place where the discharge nozzle is installed. And at least one of humidity.

[0008] The curing time of the two-component mixed-curable sealing material changes based on either environmental temperature, humidity, or the like. In this configuration, one of the temperature and the humidity of the workplace where the discharge nozzle is installed is monitored, and either of the monitored temperature and the humidity is used as a condition for setting the target mixing ratio of the two liquids, The delivery amount of the pair of delivery pumps is controlled so that the mixing ratio of the mixture becomes the target mixing ratio, so that the curing time of the mixture discharged from the discharge nozzle falls within a predetermined time range, and the curing time is stabilized. As a result, the discharge property of the mixed liquid, and the adhesive property or sealing property after application are ensured.

According to a third aspect of the present invention, in the coating apparatus for a two-component mixed-curable sealing material according to the second aspect, the monitor means is provided at the discharge nozzle and monitors the temperature of the discharge nozzle. The gist is to be a sensor.

According to this configuration, the temperature of the discharge nozzle from which the mixed liquid is discharged is monitored, so that the temperature of the environment where the mixed liquid is cured can be reliably monitored, and the target mixing ratio corresponding to this temperature can be monitored. Is set and the delivery amount of the pair of delivery pumps is controlled so that the mixing ratio of the two liquids becomes the target mixing ratio, so that the curing time of the applied mixed solution falls within a predetermined range and the curing time It stabilizes and ensures the discharge property of the mixed solution and the adhesive property or sealing property after application.

According to a fourth aspect of the present invention, a mixed liquid is applied to an object to be coated using the two-liquid mixed-curable sealing material applying apparatus according to any one of the first to third aspects. The gist is a method for forming a molded gasket.

According to this configuration, the mixing ratio of the mixed liquid becomes the target mixing ratio according to the monitored environmental condition, so that the curing time is stabilized, and the in-situ molded gasket having excellent adhesiveness and sealing properties can be obtained. Become like

According to a fifth aspect of the present invention, there is provided a mixer for mixing two liquids of a two-liquid mixed-curable sealing material, and a pair of delivery pumps for respectively delivering the two liquids to the mixer.
In a two-liquid mixing / curing type sealing material coating apparatus provided with a discharge nozzle for discharging a mixed liquid mixed by the mixer, a monitoring means for monitoring an environmental state, an adjusting means for adjusting an environmental state, Setting means for setting a target environment state in which the curing rate of the mixture discharged from the nozzle is a predetermined curing rate; and environment control means for controlling the adjusting means so that the environment state becomes the target environment state. That is the gist.

According to this configuration, the target environment state in which the curing time of the mixed liquid is a predetermined curing time is set, and the environment is controlled by the adjusting means so that the environment state becomes the target environment state. The hardening time of the mixed solution falls within a predetermined time range, and the hardening time is stabilized, so that the ejection property of the mixed solution and the adhesiveness or sealing property after application are ensured.

According to a sixth aspect of the present invention, the mixing ratio of the two liquids is adjusted so as to keep the curing speed of a liquid gasket formed by applying a mixed liquid of a two-liquid mixed-curable sealing material to an object to be coated. The gist is a method of forming an in-situ molded gasket to be controlled.

According to this configuration, the curing time of the applied liquid mixture is stabilized, and a molded-in-place gasket excellent in adhesiveness and sealability can be obtained.

[0017]

(First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a coating apparatus 10 for a two-liquid mixed-curable sealing material according to the present embodiment. The coating apparatus 10 is installed in a substantially closed work place S. The coating device 10
A main agent and a curing agent as liquids are mixed, and the mixed liquid is applied to an object to be coated. The coating device 10 includes a main agent supply unit 20A that supplies a main agent, a curing agent supply unit 20B that supplies a curing agent,
The mixer 32 includes a mixer 32 for mixing the main agent and the curing agent supplied from the main agent supply unit 20A and the curing agent supply unit 20B, and a control device 50 as a setting unit and a control unit.

The main agent is stored in the liquid tank 21A of the main agent supply section 20A. Here, the main ingredient is the liquid tank 21
When being charged into A, it is heated to a predetermined temperature (for example, 40 ° C.). The booster pump 22A includes a pressing pipe 24A and a pressing plate 23A, and the pressing plate 23A is slidably accommodated along the inner periphery of the liquid tank 21A. When the pressure pipe 24A is protruded based on the operation of the booster pump 22A, the pressure plate 23A is brought into close contact with the liquid surface of the main material, and the main material is pressurized. Through the liquid tank 21A
Is to be taken out from.

A level tank 25A is connected to the booster pump 22A. The level tank 25A stores the main agent taken out by the booster pump 22A,
Apply a predetermined pressure.

In the middle of a supply pipe 28A for supplying the main agent from the level tank 25A to the mixer 32, a mono pump 26A as a delivery pump is provided. The mono pump 26A is coupled to a servo motor 27A as a driving source, and by sending an adjustment signal to the servo motor 27A, the output of the mono pump 26A can be adjusted.

A heater 3 is provided between the mono pump 26A and the mixer 32 on the outer periphery of the supply pipe 28A.
0A is provided. The heating device 30A is energized and controlled by the control device 50 to be controlled at a predetermined temperature, so that the main agent pressure-fed in the supply pipe 28A is maintained at the predetermined temperature.

The supply pipe 28A is connected to the mixer 32 via a three-way valve 33A.
Is connected to one end of a return pipe 29A reaching the level tank 25A. The three-way valve 33A is switched so as to communicate the supply pipe 28A and the mixer 32,
Switching is performed so that the supply pipe 28A communicates with the return pipe 29A. When the three-way valve 33A is switched so as to communicate the supply pipe 28A and the return pipe 29A, the main agent is supplied through the return pipe 29A to the level tank 2A.
It is to be returned to 5A.

Since the curing agent supply section 20B has the same configuration as the main agent supply section 20A, the same members are denoted by "B" instead of "A" at the end of the reference numerals, and detailed description thereof is omitted. In addition, in the curing agent supply unit 20B, the liquid tank 2
1B stores a curing agent. Here, when the curing agent is also charged into the liquid tank 21B, a predetermined temperature (for example, 4
(0 ° C.).

As shown in FIG. 2, a main agent passage 37 and a hardening agent passage 38 corresponding to the three-way valves 33A and 33B and reaching the accommodating portion of the rotor 35 are formed in the chamber 34 of the mixer 32. The rotor 35 is housed. The main agent introduced through the main agent passage 37 and the curing agent introduced through the curing agent passage 38 are mixed by the rotor 35, and the mixed liquid is discharged from a discharge nozzle 39 provided at the tip of the chamber 34. It is designed to be applied to an object to be coated. A temperature sensor 41 is provided on the outer surface of the discharge nozzle 39 as monitoring means.
1 monitors the temperature of the discharge nozzle 39 as an environmental state, that is, the temperature of the workplace S, and outputs the monitoring result to the control device 50.

A cooling water passage 40 is formed in the chamber 34, and cooling water is supplied from the cooling water tank 14 to the cooling water passage 40 by the circulation pump 13 of the cooling device 12. The chamber 34 is set to a predetermined temperature by the cooling water flowing through the cooling water passage 40.

When the coating device 10 is started, the control device 50 controls the energization of the heaters 30A and 30B. Further, the control device 50 sets the target mixture ratio of the main agent and the curing agent based on the temperature of the workplace S monitored by the temperature sensor 41, and sets the servo ratio so that the mixture ratio of the main agent and the curing agent coincides with the target mixture ratio. Motor 27
By controlling the rotation speeds of the motors A and 27B, the delivery amounts of the mono pumps 26A and 26B are controlled.

FIG. 3 shows a map of the curing speed and the temperature (humidity) of the mixed solution. Even if the mixing ratio of the main agent and the curing agent is constant, if the temperature (humidity) becomes higher, the mixture of the mixed solution becomes higher. When the curing speed increases and the temperature (humidity) decreases, the curing speed of the mixed liquid decreases, and it becomes impossible to ensure the dischargeability of the mixed liquid and the adhesiveness or sealability after application. Therefore, based on the temperature of the workplace S monitored by the temperature sensor 41, the control device 50 sets a target mixture ratio from the map shown in FIG. The delivery amounts of the mono pumps 26A and 26B are controlled so that the mixing ratio of the agents matches the target mixing ratio.

[0029] The application device 10 described above is suitable for use in forming gaskets in-situ. In order to use the coating device 10, first, the main agent and the curing agent are charged into the liquid tanks 21A and 21B, respectively. At this time, the main agent and the curing agent are heated at a predetermined temperature (40 ° C.). The supplied base material and curing agent are supplied to the booster pumps 22A and 22A.
The pressure is introduced into the level tanks 25A and 25B by the 2B and a predetermined pressure is applied thereto.

Based on the temperature of the work area S monitored by the temperature sensor 41, the controller 50 sets the target mixture ratio of the main agent and the curing agent, and adjusts the mixture ratio of the main agent and the curing agent to the target mixture ratio. By controlling the rotation speeds of the servo motors 27A and 27B, the output of the mono pumps 26A and 26B is controlled. The temperatures of the main agent and the curing agent fed through the supply pipes 28A and 28B are maintained at substantially constant temperatures by the heaters 30A and 30B.

The main agent and the curing agent introduced into the mixer 32 are mixed by the rotor 35, and this mixed liquid is discharged from the discharge nozzle 39, and is applied as a liquid gasket to an object to be coated, thereby forming an on-site gasket.

The present embodiment has the following effects. The target mixing ratio of the main agent and the curing agent is set by the control device 50 according to the monitored temperature of the discharge nozzle 39, that is, the temperature of the workplace S, and the pairing is performed so that the mixing ratio of the main agent and the curing agent becomes the target mixing ratio. MONO pumps 26A, 26
Since the delivery amount of B is controlled, the curing time of the mixed liquid discharged from the discharge nozzle 39 falls within a predetermined time range and the curing time is stabilized, and the discharge property of the mixed liquid and the adhesiveness after application or Sealability and the like can be ensured.

Since the temperature of the discharge nozzle 39 from which the mixed liquid is discharged is monitored, the temperature of the environment in which the mixed liquid is cured can be reliably monitored, and a target mixing ratio according to this temperature is set. Since the delivery amounts of the pair of mono pumps 26A and 26B are controlled so that the mixing ratio of the main agent and the curing agent becomes the target mixing ratio, the curing time of the mixture discharged from the discharge nozzle 39 falls within a predetermined time range. As a result, the curing time is stabilized, and the discharge property of the mixed liquid and the adhesive property or sealing property after application can be ensured.

The liquid gasket in which the liquid mixture is applied to the object to be coated has a target mixing ratio corresponding to the temperature of the discharge nozzle 39, so that the curing time is stabilized, and the adhesiveness and the sealability are excellent. An in-situ molded gasket can be obtained.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described with reference to FIG. In order to avoid redundant description, the same elements as those described in FIG. 1 are denoted by the same reference numerals. Also, the description will focus on the differences from the above-described first embodiment.

The coating device 60 for the two-liquid mixed-curing type sealing material of this embodiment is installed in a substantially closed work place S. A heater 71 as an adjusting means is provided in the work place S, and the heater 71 adjusts the temperature of the work place S based on a control signal output from the control device 70. When the application device 60 is started, the control device 70 controls the energization of the heaters 30A and 30B for keeping heat. Further, the control device 70 constitutes a setting unit and an environment control unit, and sets a target environmental temperature at which the curing speed of the mixed liquid discharged from the discharge nozzle 39 becomes a predetermined curing speed, and sets the environmental temperature to the target environmental temperature. The heater 71 is controlled so as to be as follows.

Therefore, the present embodiment has the following effects. The target environment temperature at which the curing time of the mixture is a predetermined curing time is set, and the temperature of the discharge nozzle 39, that is, the temperature of the workplace S is controlled by the heater 71 so as to reach the target environment temperature. The curing time of the mixed liquid discharged from within the predetermined time range falls within the predetermined time range, and the curing time is stabilized, so that the discharging property of the mixed liquid and the adhesive property or sealing property after application can be ensured.

The embodiment may be modified as follows. In the above embodiments, the temperature of the mixed liquid to be discharged is measured by providing the discharge nozzle 39 with the temperature sensor 41.
A temperature sensor is provided in the workplace S where the coating device is installed,
The temperature of the workplace S may be detected. In this case, the temperature sensor may be attached to the coating device, or may be attached to an arbitrary place in the work place S other than the coating device. With this configuration, the environment in which the mixed liquid is cured is measured, and the discharge amount of the two liquids can be controlled to a more optimal discharge amount.

In each of the above embodiments, the temperature is measured as the environmental condition in which the mixed liquid is cured. However, the temperature of the two-liquid mixed-curing type sealing material is measured because the curing speed varies depending on the humidity. Instead, a humidity sensor may be provided to measure the humidity, and the mixing ratio of the two liquids may be controlled based on the measurement result. In this case, the humidity sensor may be provided on the outer surface of the discharge nozzle 39 or may be provided at an arbitrary position in the workplace S.

In the above embodiments, the temperature and humidity are monitored by providing the temperature sensor 41 and the humidity sensor,
The mixing ratio of the two liquids may be controlled based on the monitored temperature and humidity.

Next, other technical ideas that can be grasped from the above embodiments will be described below. (B) In the coating device for a two-component mixed-curing sealing material according to claim 5, the environment monitored by the monitoring means is at least one of a temperature and a humidity of a work place where the coating device is installed. Sealing material coating device.

(B) In the coating apparatus for a two-liquid mixed / curable sealing material described in (a), the monitor means monitors the temperature of the discharge nozzle.

(C) The environmental condition is controlled in accordance with the mixing ratio of the two liquids so that the liquid gasket obtained by applying the mixed liquid of the two-liquid mixed-curable sealing material to the object to be coated is kept at a constant curing speed. A method of forming a molded-in-place gasket.
Also in this case, the curing time of the applied mixed liquid is stable,
An in-situ molded gasket having excellent adhesion and sealing properties can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating a coating apparatus according to a first embodiment.

FIG. 2 is a sectional view showing a mixer.

FIG. 3 is a diagram showing a relationship between a curing speed of a mixed solution and environmental conditions.

FIG. 4 is a schematic configuration diagram illustrating a coating apparatus according to a second embodiment.

[Explanation of symbols]

26A, 26B ... Mono pump as delivery pump,
32: mixer, 39: discharge nozzle, 41: temperature sensor,
50 ... a control device as setting means and control means, 70 ...
A control device as setting means and environment control means; 71, a heater as adjustment means; S, a work place;

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D075 AC01 AC84 AC94 AC96 AC99 BB16X BB93X BB95X EA39 4F041 AA16 AB01 BA05 BA42 BA46 BA56 4F042 AA16 BA02 BA19 BA20 CA06 CB26 CB27

Claims (6)

[Claims] 1. A mixer for mixing two liquids of a two-liquid mixed-curable sealing material, a pair of delivery pumps for sending the two liquids to the mixer, respectively, and discharging a mixed liquid mixed by the mixer. A two-liquid mixed-curing type sealing material coating apparatus having a discharge nozzle that monitors the environmental condition; and a curing device that monitors a curing speed of the mixed liquid discharged from the discharge nozzle. Setting means for setting a target mixing ratio of the two liquids so as to achieve a curing speed of: and control means for controlling a delivery amount of the pair of delivery pumps so that the mixing ratio of the two liquids matches the target mixing ratio. And a coating device for a two-liquid mixed-curing type sealing material. 2. An apparatus for applying a two-component mixed-curing type sealing material according to claim 1, wherein the environmental condition monitored by said monitor means is at least one of a temperature and a humidity of a work place where said discharge nozzle is installed. Applicator for two-component mixed-curing sealing material. 3. The two-liquid mixed-curing sealing material applying apparatus according to claim 2, wherein said monitor means is a temperature sensor provided on said discharge nozzle and monitors a temperature of said discharge nozzle. Applicator for mold sealing material. 4. A method for forming an in-situ molded gasket, wherein a mixed liquid is applied to an object to be coated using the two-liquid mixed-curable sealing material applying apparatus according to claim 1. 5. A mixer for mixing two liquids of a two-liquid mixed-curing type sealing material, a pair of delivery pumps for respectively delivering the two liquids to the mixer, and discharging the mixed liquid mixed by the mixer. A two-liquid mixed-curing type sealing material coating device having a discharge nozzle that performs monitoring, an environmental state monitoring unit, an environmental state adjustment unit, and a curing speed of the mixed liquid discharged from the discharge nozzle. An application device for a two-liquid mixed-curing sealing material, comprising: setting means for setting a target environmental state at which a predetermined curing speed is obtained; and environmental control means for controlling the adjusting means so that the environmental state becomes the target environmental state. 6. In-situ molding wherein the mixing ratio of the two liquids is controlled so as to keep the curing speed of a liquid gasket obtained by applying a mixed liquid of a two-liquid mixed-curable sealing material to an object to be coated. Gasket forming method.