JPH0634955B2 - Floor coat liquid coating machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a liquid supply unit for supplying a floor coating liquid containing a thermoplastic resin-based coating agent as a component to a floor surface, and a liquid supply unit from this liquid supply unit. The present invention relates to a floor coat liquid applicator in which an applicator for applying a floor coat liquid to a floor surface is attached to a traveling machine body.

[Conventional technology]

In this type of coating machine, there is a conventional method such as that disclosed in
As disclosed in Japanese Patent No. 315169, the applicator is configured to be heated by a built-in heat radiator composed of a heating wire for a heater, and the applicator is pressed against the floor surface to transfer heat to the coating solution. It is known that the coating solution can be heated so that the coating agent is plasticized and the water content is dried.

[Problems to be Solved by the Invention]

However, in the above-described conventional coating machine, the applicator itself serves as a heating means for the coating agent, and the heating means transfers heat in a contact state between the coating surface of the applicator and the floor surface. Therefore, the surface of the floor coating liquid which is about to be mirror-finished by being heated is hampered by the presence of the coating surface of the applicator in contact with the mirror-coating and water evaporation, and the poor finish, It was supposed to cause a decrease in drying efficiency.

An object of the present invention is to provide a coating machine which can obtain a coating surface having a good finish and can work efficiently.

[Means for Solving the Problems]

The floor coat liquid coating machine according to the present invention is, in order to achieve the above object, a liquid feed section (5) for feeding a floor coat liquid containing a thermoplastic resin coating agent as a component to the floor surface, and this liquid feed. Division (5)
In the floor coat liquid applicator equipped with the applicator (6) for applying the floor coat liquid from the
An air outlet for supplying hot air of 90 ° C. at a wind speed of about 40 to 100 m / sec is provided at the rear position of the body of the applicator, and its blowing direction is set obliquely backward and downward with respect to the traveling direction. There is. The action and effect are as follows.

[Work]

a. By using hot air, it is possible for the applicator to perform heating and drying operations without hindering the mirroring of the coating agent and evaporation of water, but there are the following measures to adopt this hot air. . In other words, in this type of coating machine, in addition to the high viscosity of the floor coating liquid, a small amount is used so that the liquid supply nozzle that supplies the floor coating liquid can easily form a thin film of the coating agent on the floor surface. Since it is a general formula that is composed of a thin tube to discharge, up to the floor coating liquid in the vicinity of the liquid supply nozzle and the applicator and the part that adheres is too early dried under the influence of the hot air, There is a possibility that the mirror surface of the coating agent may be hindered, but in the present invention, the action of the hot air from the blower opening is set obliquely rearward and downward so that the action of the hot air is caused by the liquid supply nozzle and the applicator. It can be used with little influence on the floor coating liquid at the position. This allowed hot air to be used for heating and drying.

b. Insufficient heating causes the coating agent not to be sufficiently plasticized and water to be difficult to evaporate, and excessive heating increases the time required for curing by radiative cooling of the coating agent and causes water evaporation. The temperature of about 30 to 90 ° C. can prevent the hardened surface of the coating agent from becoming rough.

c. The time required for heat radiation curing and water drying of the coating agent becomes long due to insufficient air blowing, and wavy in the coating solution for coating due to excessive air blowing, resulting in uneven surface of the coating agent. Heating and drying can be performed while preventing by a wind speed of about 40 to 110 m / sec.

〔The invention's effect〕

As a result of the effects described in a. To c. Above, the following effects can be obtained.

That is, because of heating and drying with hot air whose temperature, wind speed, and blowing direction are set, a coating surface having a smooth finish and a good finish can be obtained without hindering the operation of the liquid supply nozzle or the applicator. Moreover, since the coated surface is quickly hardened and dried, the machine traveling speed can be made as high as possible and work can be performed efficiently.

〔Example〕

 Next, examples will be shown.

As shown in FIG. 1, a pair of left and right front wheels (1), (1) are provided to be driven by an electric motor (M1), and a pair of left and right caster type rear wheels (2), (2), And, the traveling machine body (4) equipped with the steering handle (3) is provided with the liquid supply nozzle (5), the applicator (6) and the air exhauster (7) at the front and rear wheel locations, and
Nozzle side liquid supply hose (8) to the liquid supply nozzle (5), liquid supply pump
(P) and the tank (T) connected via the tank side liquid supply hose (9) are attached to the base end side of the steering handle (3) and
An electric blower connected to the exhaust fan (7) via the air duct (10)
(B) is mounted on the rear part of the traveling body (4) to form a self-propelled walking type floor coat liquid coating machine. This coating machine contains a thermoplastic resin-based coating agent as a component, and supplies a floor coating liquid having the physical properties shown in Table 1 below to a tank (T),
By applying the floor coating liquid to the floor passage part of the floor surface with the set width by running the aircraft on the floor made of stone, concrete or chemical flooring at the aircraft running speed shown in Table 2, do the coating work. The details are configured as follows.

That is, as shown in FIG. 3, the liquid supply nozzle (5) is made of a metal pipe, and the nozzle support member is provided with a horizontal feed case (11) and a horizontal feed rotary shaft (12). Traveling airframe
It is attached to the pair of left and right support stays (4a), (4a) of (4). As shown in FIG. 2, a front-wheel drive transmission belt (15) in which an output pulley (13) of a traveling electric motor (M1) and a front-axle drive pulley (14) are interlocked with each other is a lateral feed rotary shaft. By winding around the drive pulley (16) of (12), the electric motor (M1) is configured to rotate and drive the transverse feed rotation shaft (12) in conjunction with the front wheel (1). When the lateral feed rotary shaft (12) is driven, the support stay portion (4a) supports the lateral feed rotary shaft (12) so that it can only rotate, and the lateral feed rotary shaft (1
Since the horizontal feed case (11) has a horizontal feed spiral groove (12a) that acts on the internal horizontal feed mechanism (not shown), the horizontal feed case (11) The liquid supply nozzle (5) is configured to reciprocate in the lateral direction of the machine along the rotating shaft (12) and the guide rail (17) that also serves as a case detent, so that the liquid supply nozzle (5) can be moved in the lateral direction of the traveling machine (4). Horizontal feed spiral groove (1
It is configured so that it can be driven by an electric motor (M1) so as to reciprocate with a stroke determined by the length of 2a).

In order to configure the liquid supply pump (P),
As shown in the figure, rotary pump body (18), rotary pump body (18)
Attach the curved plate (19) located on the front side of the body of the vehicle to the pump support stay part (4b) of the vehicle (4) and rotate the pump body.
Elastic pump tube with intermediate section between (18) and curved plate (19)
(20) is attached to the pump support stay portion (4b) via a pair of support members (21), (21), and as shown in FIG. (23) to front axle (2
In conjunction with 4), the rotary pump body (18) is configured to be driven by the electric motor (M1) in conjunction with the front axle (24), and as the rotary pump body (18) rotates. A plurality of delivery parts (18a) made of resin rollers and a receiving part (18b) made up of a space located between the delivery parts (18a) are alternately opposed to the elastic pump pipe (20). By configuring to operate the pump, it is possible to intermittently supply each set time determined by the arrangement pitch of the delivery portion (18a), the driving rotation speed of the pump rotating body (18), etc. The supply amount is determined by the inner diameter and the like. That is, when the delivery part (18a) faces the elastic pump pipe (20), as shown in FIG. 4, the middle part of the elastic pump pipe (20) is bent to the curved plate (19).
Is pressed against the pump pipe receiving surface (19a) to elastically deform, and the floor coating liquid is squeezed from the elastic pump pipe (20) to the nozzle side liquid supply hose (8) and supplied to the liquid supply nozzle (5). That is, the discharge action is performed. Then, when the receiving portions (18b) face each other, as shown in FIG. 5, the elastic pump pipe (20) is restored to the non-deformed state by the elastic restoring force, and the suction action by this restoring and the self-weight lowering of the floor coating liquid. As a result, the floor coating liquid flows from the tank (T) into the elastic pump pipe (20), and a suction action is performed so as to enable squeezing by the next delivery portion (18a).

In short, because the liquid supply nozzle (5) moves back and forth by the electric motor (M1) and forwards when the machine runs, the liquid supply nozzle (5) needs to move to the first floor area of the coating width of the set width (W) determined by the nozzle reciprocating stroke. As shown in FIG. 6, the zigzag movement is performed, and the zigzag linear feed is applied to the floor surface portion to be coated at the supply amount shown in Table 2 below, which is determined by the discharge amount of the liquid supply pump (P).

The applicator (6) is arranged on the rear side of the body of the liquid supply nozzle (5), and an electric motor (6) is vibrated up and down while rotating the applicator (6) along the floor surface. It is attached to the traveling machine body (4) through an applicator drive device (25) driven by M2). Drive the applicator by interlocking with the frame part (25a) of the applicator drive device (25) via the interlocking member (26) and swinging the switching lever (27) attached to the control handle (3). The device swings up and down with respect to the traveling machine body (4) around the rear body side connecting part to the machine body, and the applicator (6) is in the descending use state where it contacts the floor surface, and the applicator (6) is It is configured to switch to a raised storage state in which the floor surface floats. And
When the applicator drive device (25) is lowered and used, the applicator
(6) moves forward on the floor to move the aircraft,
(W) With the coating action surface of the width above, the floor coating liquid which is supplied by the liquid supply nozzle (5) first reaches the floor surface of the set width (W) and reaches the entire surface. Spread it out and apply it.

The electric blower (B) is equipped with a cooling fan (2
8) Electric motor (M3) cooled by impeller (29)
The suction port is driven by the rotating impeller (29).
The air is taken in from (30) and is blown from the outlet (31) through the blower pipe (10) to the exhaust device (7). Then, the electric blower (B) is equipped with an electric heater (32) that blows the air supplied by the air blower (7) and a blower pipe (10), and the wind from the electric blower (B) is directed toward the floor. The ventilation device (7) is provided with a ventilation port (7a) for discharging. The blower opening (7a) is formed by a blower slit having a lateral length of the fuselage substantially equal to the set lateral width (W), and is arranged on the rear side of the fuselage by the applicator (6). As a result, the blower port (7a) supplies hot air to the floor surface portion already coated by the coating tool (6). That is, the coating agent of the applied floor coating liquid is plasticized and hardened rapidly, and is heated and dried by hot air so as to quickly remove water. Based on the temperature test results and the wind speed test results shown in Table 3 and FIG. 8 below, the electric blower (to supply hot air at a temperature of about 30 to 90 ° C. and a wind speed of about 40 to 100 m / sec. B), the amount of air blown and the amount of heat generated by the electric heater (32) and the air blow port (7a) are set.

It should be noted that the ○, △, and × marks shown in FIGS. 3 and 8 indicate the finishing condition when the aircraft traveling speed of 10 m / min was revealed, and the ○ marks indicate that the drying was good, and the △ marks The mark indicates that the drying is poor, and the cross indicates that the finished surface is non-mirror surface and defective regardless of the drying condition.

The mark x shown in FIG. 8 is predicted from the experimental results shown in Table 3.

The height (H) of the ventilation port (7a) from the floor surface is set to about 5 to 15 mm, and the ventilation port (7a) is inclined at an angle (θ) with respect to the floor surface to blow air backward It is facing. These are set based on the experimental results shown in FIG.

In addition, θ = 30 ° to 75 ° shown in FIG. 9 indicates a rearward inclination angle of the air blower opening (7a) with respect to the floor surface, and θ = 90 ° indicates the air blower opening (7a).
Indicates that it is perpendicular to the floor. And, x indicates that the finished surface is a non-mirror surface, ∘ indicates that the finished surface is a mirror surface and indicates good drying, and Δ indicates that the finished surface is on a mirror surface and indicates poor drying.

Table 1 Physical properties of floor coating liquid Appearance White translucent emulsion pH value 8.20 (20 ° C) Nonvolatile content 20.3% Viscosity 3.5cps Freezing point 0 ° C Table 2 Aircraft running speed 10 to 30m / min Floor coating liquid supply rate 3.4 g / m ² Experimental conditions Room temperature: 16 to 26 ° C Humidity: 43 to 70% Floor temperature: 13 to 18 ° C Airframe running speed: 10m / min The applicator shown in Figs. 1 to 3 is for exposing hot air. It is configured as a cord so that electric energy can be taken from the outlet at the work place. Instead of the cord type, a battery may be mounted and used as a power source. The battery-type configuration is cordless, which is advantageous for movement and the like. In addition, it becomes easy to adjust the current and voltage to desired values, and it becomes easy to express the temperature and velocity of hot air to desired values.

Further, the floor coating liquid may be plucked and fed to the floor surface by the liquid feed nozzle (5), or a means for impregnating and feeding the applicator may be adopted. Therefore, insert the liquid supply nozzle (5) into the liquid supply section.
It is called (5).

A room temperature air supply air supply port is also provided behind the air supply port (7a) and, if necessary, room temperature air is supplied so that the coating agent can be cured by heat radiation and the moisture can be dried quickly. You may carry out.

It should be noted that reference numerals are added to the claims for convenience of the drawing, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an example of a floor coat liquid coating machine according to the present invention,
FIG. 1 is a partially cutaway side view of the entire applicator, FIG. 2 is a side view of the entire applicator, FIG. 3 is a plan view of the entire applicator, and FIGS. 4 and 5 are cross-sections of the liquid supply pump. FIG. 6 is a plan view of a liquid feed nozzle lateral feed structure, FIG. 7 is a cross-sectional view of an electric blower, FIG. 8 is an explanatory diagram of experimental results of temperature and velocity of supply air, and FIG.
The figure is an explanatory view of the experimental results of the height and direction of the blower opening. (5) …… Liquid supply part, (6) …… Applicator, (7a) …… Blower.

Claims (1)

[Claims] 1. A liquid supply part (5) for supplying a floor coating liquid containing a thermoplastic resin-based coating agent as a component to the floor surface, and a floor coating liquid from this liquid supply portion (5) on the floor surface. A floor coat liquid applicator equipped with an applicator (6) to be applied to the traveling machine body, which has a blower port (7a) for supplying hot air of about 30 to 90 ° C to the floor at a wind speed of about 40 to 100 m / sec. , At the rear position of the applicator (6),
Further, the floor coat liquid coating machine is arranged such that its blowing direction is set obliquely backward and downward with respect to the traveling direction.