JPH078339B2 - Floor coat liquid coating machine - Google Patents

Description

The present invention relates to a liquid supply nozzle for supplying a floor coating liquid to a floor surface, and an applicator for applying the floor coating liquid from the liquid supply nozzle to the floor surface. To the traveling machine body, and a liquid supply pump for supplying a liquid floor coating liquid from a tank to the liquid supply nozzle.

[Conventional technology]

In the above-mentioned floor coat liquid coating machine, conventionally, for example, Japanese Patent Application No. 1-
As shown in No. 240353, a plurality of liquid supply nozzles should be installed side by side in the lateral direction of the machine body, and the floor coating liquid should be taken out from the tank by a constant amount type liquid supply pump and distributed to the liquid supply nozzles. Thus, the floor coating liquid can be applied over the entire surface to the set width portion of the floor surface where the airframe passes.

[Problems to be Solved by the Invention]

As described above, the conventional structure of the type in which a plurality of liquid supply nozzles are arranged and the floor coat is directly supplied to the floor surface is, for example, impregnated with the floor coat liquid over the entire wide applicator and applied. It is useful in that the supply amount of the floor coating liquid can be controlled more easily and that a thin film of the coating agent can be easily formed on the floor surface, as compared with the type used in a state where the coating material exudes from the coating surface.

However, in this conventional liquid supply nozzle, since the liquid passage cannot be made too thin in order to prevent liquid clogging, the discharge amount cannot be suppressed to a very small amount.

Also, even with a constant-quantity discharge pump, the discharge amount cannot be suppressed to a very small amount due to structural and manufacturing reasons, so the amount of floor coating liquid supplied to the floor surface per unit floor area is relatively large. Was becoming. As a result, a large amount of floor coating liquid is required for the size of the floor surface to be coated, and the time required for drying the floor coating liquid after coating is relatively long.

An object of the present invention is to provide an applicator capable of applying the floor coating liquid in an appropriate amount while preventing the floor coating liquid from clogging easily.

[Means for Solving the Problems]

The technical means taken by the present invention to achieve the above object is to run a liquid supply nozzle for supplying a floor coating liquid to a floor surface and an applicator for applying the floor coating liquid from the liquid supply nozzle to the floor surface. In addition to being attached to the machine body, in the floor coat liquid applicator provided with a liquid supply pump for supplying the floor coat liquid from the tank to the liquid supply nozzle, the applicator is formed in a wide shape long in the lateral width direction of the traveling machine body, A lateral reciprocating mechanism for reciprocating the liquid supply nozzle in the lateral width range of the applicator in the lateral direction of the traveling machine body is provided, and the liquid supply pump connects the tank and the liquid supply nozzle with an elastic pump pipe. And a drivable rotary pump body that acts on the elastic pump pipe, and the rotary pump body pushes and elastically deforms the elastic pump pipe in accordance with the rotation of the rotary pump body. Liquid supply A delivery unit for squeezing liquid supply to the nozzle,
Receiving portions for restoring the elastic pump pipe to a non-deformed state and sucking liquid from the tank into the elastic pump pipe are alternately provided in the rotation circumferential direction of the rotary pump body, and the liquid supply nozzle is further provided. Each of the horizontal reciprocating mechanism and the rotary pump body is linked to the traveling wheels so as to operate in synchronization with the rotation of the traveling wheels.

[Action]

The effect of taking the above technical means is as follows.

a. As the machine travels, the liquid supply nozzle moves forward and backward together with the machine while reciprocating in the lateral direction of the machine to drive itself in the lateral direction, and moves in a zigzag manner to the floor where the machine passes the floor. Supply coating liquid. That is, the floor coating liquid is supplied in a zigzag line shape to the application target portion.

b. Then, the applicator moves forward after the liquid supply position by the liquid supply nozzle as the machine progresses, and spreads the floor coating liquid supplied from the liquid supply nozzle to the application range of the set width. In other words, compared with the one in which the liquid supply nozzles are arranged side by side in the machine lateral direction,
The floor coating liquid can be applied over the entire surface of the application target area with a small number of liquid supply nozzles. As a result, even if the liquid passage of the liquid supply nozzle is made relatively thick so that liquid clogging is less likely to occur, the amount of liquid supplied per reference floor area can be reduced relative to the discharge amount of the liquid supply nozzle. .

c. The liquid feed pump causes the sending part and the receiving part to alternately act on the elastic pump pipe as the rotary pump body is driven to rotate,
The delivery part presses and elastically deforms the elastic pump pipe to squeeze and supply the liquid in the pipe, and the receiving part elastically restores the elastic pump pipe and causes the liquid to flow into the elastic pump pipe to enable the next squeeze supply. As a result, the floor coating liquid is supplied to the liquid supply nozzle, and is intermittently supplied due to the interaction between the sending portion and the receiving portion. That is, since the discharge amount can be set by setting the thickness of the elastic pump pipe and setting the delivery pitch, the discharge amount can be easily set to be smaller than that of the conventional pump. As a result, it is possible to adjust the supply amount by the liquid supply pump to a smaller amount than the conventional pump can,
The amount of liquid supplied per standard floor area can be adjusted to a lower limit lower than the conventional amount.

d. Since the horizontal reciprocating mechanism of the liquid supply nozzle and the rotary pump body are linked to the traveling wheels to operate in synchronization with the rotation of the traveling wheels, the unit may be changed depending on the movement speed of the machine body. Even if the area to be coated per unit time changes, it is possible to always supply an appropriate amount of the floor coating liquid.

〔The invention's effect〕

I. Due to the actions a. To c. Above, a relatively thick liquid supply passage is provided by the zigzag supply by the liquid supply nozzle, the subsequent coating action, and the adoption of the squeezing pump capable of supplying in a trace range. Although the amount of liquid that is unlikely to cause liquid clogging is discharged from the liquid supply nozzle, the total amount of floor coating liquid supplied should be an appropriate amount that does not become excessive. There is an effect that the coating liquid can be dried quickly and work can be efficiently performed while preventing an increase in cost.

B. From the above actions a. To d., It is possible to accurately supply an appropriate amount of floor coating liquid according to the area to be coated, which is determined by the traveling distance per unit time of the machine body. Also, there is an advantage that the coating work in a good finished state can be performed by preventing the floor coating liquid from spilling out of the supply target range due to excess.

〔Example〕

 Next, examples will be shown.

As shown in FIG. 1, a pair of left and right traveling wheels (1), (1) are provided so as to be driven by an electric motor (M1), and a pair of left and right caster-type rear wheels (2), (2) and a liquid supply nozzle (5), an applicator (6) and a blower (7) that are wide in the lateral direction of the machine are attached to the front and rear wheels of the traveling machine (4) equipped with the steering handle (3). Then, the tank (T) connected to the liquid supply nozzle (5) via the nozzle side liquid supply hose (9) is attached to the proximal end side of the control handle (3), and the air blower (7) is blown between The electric blower (B) connected via (10) is mounted on the rear part of the traveling machine body (4) to form a self-propelled walking type floor coat liquid coating machine.

This coating machine supplies a floor coating liquid containing a thermoplastic resin-based coating agent to a tank (T) and runs the machine on a floor made of wood, stone, concrete or a chemical flooring material, thereby The floor coating liquid is applied to the passage portion of the machine body with a set width, and the coating operation is performed to dry the floor coating liquid. The details are configured as follows.

That is, as shown in FIG. 3, the liquid supply nozzle (5) is made of a metal tube, and is composed of a horizontal feed case (11) also used as a nozzle support member and a horizontal feed rotary shaft (12). Through the horizontal reciprocating mechanism, the pair of left and right support stays (4) of the traveling machine body (4) reciprocate in the lateral direction of the traveling machine body (4).
It is attached to a) and (4a).

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. (1
By winding around the drive pulley (16) of 2), the electric motor (M1) causes the transverse feed rotation shaft (12) of the transverse reciprocating mechanism.
Is configured to be rotationally driven in association with the front wheel (1). Then, when the transverse feed rotation shaft (12) is driven,
The support stay portion (4a) supports the lateral feed rotary shaft (12) so that the lateral feed rotary shaft (12) can only rotate, and the lateral feed rotary shaft (12) has a lateral feed mechanism (11) internally mounted in the lateral feed case (11). Since the lateral feed spiral groove (12a) that acts on the lateral feed case (11) is formed, the lateral feed case (11) has a lateral feed rotating shaft (12) and a guide rail (17) that also serves as a case rotation stopper. ) Along with reciprocating in the lateral direction of the aircraft,
The liquid supply nozzle (5) can be driven by the electric motor (M1) so as to reciprocate in the lateral direction of the traveling machine body (4) with a stroke determined by the length of the transverse feed spiral groove (12a).

As shown in FIGS. 1 and 4, a rotary pump body (18) and a curved plate located on the front side of the rotary pump body (18) in the body are included in the liquid supply pump (P). (19)
Is attached to the pump support stay portion (4b) of the traveling body (4), and one end side is connected to the tank side liquid supply hose (9),
Further, the elastic pump pipe (20) configured to connect the tank (T) and the liquid supply nozzle (5) by connecting to the nozzle side liquid supply hose (8) on the other end side, It is mounted between the rotary pump body (18) and the curved plate (19) on the pump support stay (4b) via the pair of pump pipe supports (21), (21), and then the rotary pump. By rotating the body (18) around the axis (X), the floor coating liquid is taken out from the tank (T) via the tank-side liquid supply hose (9) and the nozzle-side liquid supply hose (8) is also obtained.
It is configured to be supplied to the liquid supply nozzle (5) via the.

That is, as shown in FIG. 3, the pump support stay portion (4
The pump body drive pulley (22) located on the opposite side of the rotary pump body (18) with respect to b) is interlocked with the front wheel (24) through the winding transmission device (23), so that the rotary pump body (18) is configured to be driven by an electric motor (M1) in association with the front wheels (1). Rotary pump body (1
8) A plurality of delivery parts (18a) consisting of resin rollers
Are arranged in a distributed manner in the circumferential direction of rotation of the rotary pump body (18), and the delivery part (18a) of the rotary pump body (18) is provided.
A space that serves as a receiving part (18b) is provided between them. Then, as the rotary pump body (18) is rotationally driven, the sending section (18a) and the receiving section (18b) are alternately arranged in the rotational circumferential direction of the rotary pump body (18), so that the elastic pump When the delivery part (18a) faces the pipe (20) alternately, the curved plate (19) forms the middle part of the elastic pump pipe (20) as shown in FIG. So that 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). When the receiving portion (18b) faces the discharge action state, the elastic pump pipe (20) is restored to the non-deformed state by the elastic restoring force, as shown in FIG. The floor coating liquid is transferred from the tank (T) to the elastic pump pipe (20) by the downward movement of the coating liquid by its own weight. It is configured to be in a suction action state so that it can be inflowed and then squeezed by the next delivery section (18a). In other words, it is an intermittent supply for each set time that is determined by the arrangement pitch of the delivery section (18a), the drive rotation speed of the pump rotating body (18), and a discharge amount that is determined by the inner diameter of the elastic pump pipe (20). I am doing it.

In short, since the liquid supply nozzle (5) reciprocates by the electric motor (M1) and moves forward by the machine body traveling, the liquid replenishment nozzle (5) needs to be moved to the application floor surface portion having the set width (W) determined by the nozzle reciprocating stroke. As shown in FIG. 6, the zigzag movement is performed, and a zigzag line is dropped and supplied to the floor surface portion to be coated at a supply amount 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 (M2) is oscillated up and down while rotating the applicator (5) along the floor surface. ) Is attached to the traveling machine body (4) through an applicator drive device (25) driven by the (1). Driving 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 (25) swings up and down with respect to the traveling machine body (4) about the rear end side body-to-machine connecting portion, and the applicator (6) is in a descending use state in which the applicator (6) contacts the floor surface, and the applicator ( 6) is configured to switch to a retracted storage state in which it floats above the floor surface. Then, when the applicator drive device (25) is lowered and used, the applicator (6) moves forward on the floor surface for traveling of the machine body, and the application action surface having a lateral width equal to or larger than the set lateral width (W) is applied. The floor coating liquid, which is first dripped and supplied by the liquid supply nozzle (5), is spread on the floor surface portion of the set width (W) so as to reach the entire surface of the floor coating liquid.

As shown in FIG. 7, the electric blower (B) rotationally drives the impeller (29) by an electric motor (M3) cooled by a cooling fan (28) to rotate the impeller (29). The air is sucked from the suction port (30) by the action, and is blown from the discharge port (31) to the blower (7) through the blower pipe (10). Then, the blower pipe (10) is equipped with an electric heater (32) for heating the wind supplied from the electric blower (B) to the blower (7), and the wind from the electric blower (B) is supplied to the floor surface. The blower opening (7a) is provided in the blower (7).
The blower opening (7a) is formed by a blower slit having a lateral length of the fuselage substantially equal to the set width (W), and is located rearward of the applicator (6). Thus, the blower opening (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 quickly, and is heated and dried by hot air so that the water content is quickly removed.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations 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 FIG.
5 and 5 are sectional views of the liquid supply pump, FIG. 6 is a plan view of the liquid supply nozzle lateral feed structure, and FIG. 7 is a sectional view of the electric blower. (1) …… Traveling wheels, (4) …… Traveling vehicle, (5) ……
Liquid supply nozzle, (6) …… Applicator, (18) …… Rotary pump body, (18a) …… Sending section, (18b) …… Receiving section, (2
0) ... Elastic pump tube, (P) ... Liquid supply pump, (T)
……tank.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Morita 3-10-14 Higashi-nakamoto, Higashinari-ku, Osaka City, Osaka Penguin Wax Co., Ltd. (56) Reference JP-A-55-79066 (JP, A) Sho 54-1065 (JP, U) Japanese Patent Sho 52-16865 (JP, B1)

Claims (1)

[Claims] 1. A traveling machine body is provided with a liquid supply nozzle (5) for supplying the floor coating liquid to the floor surface and an applicator (6) for applying the floor coating liquid from the liquid supply nozzle (5) to the floor surface. A floor coat liquid applicator, which is additionally provided with a liquid feed pump (P) for supplying a floor coat liquid from a tank (T) to the liquid feed nozzle (5), wherein the applicator (6) is a traveling machine body. And a horizontal reciprocating mechanism for moving the liquid supply nozzle (5) back and forth in the horizontal direction of the traveling machine within a range corresponding to the horizontal width of the applicator. (P) is composed of an elastic pump pipe (20) connected to the tank (T) and the liquid supply nozzle (5), and a drivable rotary pump body (18) acting on the elastic pump pipe (20). In addition, the elastic pump body (18) has a structure in which the elastic pump The elastic pump pipe (20) and the delivery part (18a) for pressing and elastically deforming the pump pipe (20) to squeeze and supply the liquid from the elastic pump pipe (20) to the liquid supply nozzle (5). Receiving portions (18b) that restore the state and suck the liquid from the tank (T) into the elastic pump pipe (20) are alternately provided in the rotation circumferential direction of the rotary pump body (18), Further, each of the horizontal reciprocating mechanism of the liquid supply nozzle (5) and the rotary pump body (18) is linked to the traveling wheel (1) so as to operate in synchronization with the rotation of the traveling wheel (1). Floor coat liquid coating machine configured.