JP2001198506A - Machine for automatically starching wallpaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the malfunction due to electrical discharge and to prevent workers from feeling fear by providing a passage to release static electricity generated inside an automated wallpaper starching machine, that is the static electricity generated on a roller. SOLUTION: This automated wallpaper starching machine for applying starch on the rear surface of a wallpaper has a means for releasing the static electricity generated inside the starching machine to the commercial power source when the static electricity reaches equal to or above a fixed voltage and a means for releasing the static electricity generated inside the starching machine to a metallic frame or a conductive resin frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic wallpaper sizing machine. More specifically, a path for discharging static electricity generated in the roller is provided to prevent malfunction due to electric discharge and to prevent a worker from feeling scared.

[0002]

2. Description of the Related Art FIG. 5 shows a schematic configuration of a conventionally known automatic wallpaper sizing machine. From the side where the cloth (wallpaper) is inserted, the measuring roller (5), the feed roller (11), the high tension roller (4), the doctor roller (10), the gluing roller (8), A glue upper roller (9), a pressing roller (6), and a flat roller (7) are arranged. The wallpaper (A) to be pasted is sandwiched between two rubber rollers, that is, a measuring roller (5) and a delivery roller (11), and is fed into the body of the pasting machine.

[0003] The measuring roller (5) is supported at both ends and can rotate freely. The roller is pressed against the cloth surface by a spring, and rotates in one direction in accordance with the feeding direction of the wallpaper (A).

By setting the outer diameter of the measuring roller (5) to a constant value, the amount of rotation of the roller is measured by some means (for example, a slit plate whose circumference is equally divided is detected by a sensor). The distance that one point on the outer circumference of the roller has moved on the circumference, that is, the length of the sent wallpaper (A) can be obtained. This information is always displayed on the gluing machine operation section, and the operator can work while watching the situation. When the preset length is reached, the gluing machine automatically stops.

[0005] After the machine stops, the operator operates the cutter guide (3).
Run the blade of a cutter knife along 0) to cut the wallpaper (A) and paste the desired length of glued wallpaper (A)
Get.

By adjusting the distance between the doctor roller (10) and the gluing roller (8), the thickness of the glue adhering to the outer periphery of the gluing roller (8) is adjusted, that is, the amount of gluing to the wallpaper (A). To adjust. The layer of glue whose thickness is controlled comes into contact with the wallpaper (A), and the glue is transferred to the back surface of the wallpaper (A). A glue box (31) provided at the bottom of the main unit
It is stored in. The paste in the paste box (31) is transferred to the paste roller (8) by the paste roller (9). The glue is supplied by pulling out the glue box (31) and feeding the glue from an opening formed above using a ladle or the like, or by using an automatic glue supply device.

The glued wallpaper (A) equalizes the glue transferred by the flat roller (7) and is discharged from the front surface of the main body and comes out. The high tension roller (4) and the pressing roller (6) serve to make the gluing uniform and to smoothly carry the wallpaper (A).

When the gluing machine is washed, the glue remaining in the glue box (31) is returned to a bucket or the like, and the sponge roller (7) and the delivery roller (11) are detached from the sponge. It is customary to wash the gluing roller (8) and the doctor roller (10) with the like.

[0009]

2. Description of the Related Art When gluing the wallpaper (A), that is, when transporting it with a roller, static electricity is generated due to friction between the wallpaper and the roller. The amount of generated static electricity depends on the material of the wallpaper, the material of the roller, the speed of discharging the wallpaper, the length of the wallpaper discharged at a time, and also depends on the surrounding environment at that time, especially during the dry season in winter and spring. Many occur.

[0010] Wallpaper materials include paper wallpaper, textile wallpaper, vinyl wallpaper, woody wallpaper, and inorganic wallpaper. Paper wallpaper generates relatively little static electricity, but vinyl wallpaper and inorganic wallpaper particularly generate static electricity. Many.

The materials of the rollers used in the wallpaper sizing machine include a rubber roller, a stainless steel roller, an aluminum roller, a carbon roller and the like according to their respective roles, and any roller generates static electricity. In particular, static electricity is often generated.

Further, not only the material of the roller, but also the speed of moving the wallpaper has a factor of generating static electricity. Regarding the speed of discharging the wallpaper, in recent years, the speed of the sizing operation of the automatic wallpaper sizing machine has been accelerated, and further, the diameter of the roller has been reduced due to the miniaturization of the automatic wallpaper sizing machine,
The speed at which the roller comes into contact with the wallpaper increases, generating a large amount of static electricity.

On the other hand, most of the roller bearings of automatic wallpaper sizing machines use resin-made bearings in order to use an inexpensive and easy-to-slide material. In such an automatic wallpaper sizing machine, when a wallpaper is transported by a roller, only the roller is charged by static electricity generated by friction between the wallpaper and the roller.

A roller that discharges static electricity generated in the roller into the air is also used. However, this roller also has a limit in the amount of discharge per unit time. Becomes charged. The amount of charge of each roller is determined by the distance between the metal part (shaft) of the roller and the metal frame of the automatic wallpaper gluing machine. In other words, if the distance becomes longer, the charge amount of the roller increases.

In most automatic wallpaper sizing machines, the distance between the metal part (shaft) of the roller and the metal frame of the automatic wallpaper sizing machine is several millimeters to several tens of millimeters.
When it is charged to tens kV or tens kV, a discharge to the metal frame of the automatic wallpaper gluing machine occurs.

If static electricity of several kV to several tens of kV or several tens of kV is discharged, this becomes electromagnetic noise, and electronic components of a control unit for controlling the automatic wallpaper gluing machine, such as a microcomputer, may malfunction. In addition, sparks fly from the rollers, making a clicking sound, and the worker often feels scared.

As a method for preventing the discharge of static electricity, a bearing of a rotating roller of an automatic wallpaper gluing machine and a metal frame are connected by an electric wire (earth wire), and the static electricity generated on the roller is transferred to the metal frame. In many cases, the escape and connection from the metal frame to the nearest ground (terminal connected to the earth) at the gluing work site and the method of escaping to the earth are used, but the rotating roller shaft and the metal frame In some cases, the electric wire (earth wire) connecting the roller and the roller may be worn due to friction with the rotating shaft of the roller, and the effect of discharging static electricity generated on the roller to the metal frame cannot be achieved in many cases.

An automatic wallpaper gluing method using a method in which the metal frame portion of the automatic wallpaper gluing machine is connected to the nearest ground (terminal connected to the earth) at the gluing work site to discharge static electricity to the earth. In the application machine, at the actual wallpaper gluing site, most of the work in the room, the wiring for connecting the ground wire (earth terminal) or the part to connect the ground wire (metal parts such as houses) In many cases, the work is performed without connecting the ground wire, because the work is not near the location, and the effect of this method cannot be exhibited.

As described above, in a situation where the ground wire cannot be connected (in some cases, the ground wire is not connected even if it is possible), the only route for discharging static electricity is a concrete floor like a condominium. At a site where an automatic wallpaper sizing machine is placed above to perform a sizing operation, a method of escaping from the legs of the automatic wallpaper sizing machine to the ground via concrete is conceivable. However, the automatic wallpaper gluing machine is insulated from the floor because elastic rubber casters are attached so that the floor will not be damaged or stained when moving in the room or corridor of a newly built house. Therefore, the method of discharging the charged static electricity from the legs cannot be sufficiently effective.

A method of making a caster using conductive rubber is also conceivable. However, even in this method, in a wooden building, since the floor is made of wood, this method cannot exert its effect sufficiently.

As described above, there has been no invention of an automatic wallpaper sizing machine having means for releasing static electricity generated inside the automatic wallpaper sizing machine in a method capable of coping with various situations of the wallpaper sizing site.

[0023]

According to a first aspect of the present invention, there is provided an automatic sizing machine for applying sizing on the back side of a wallpaper. When static electricity is charged above a predetermined voltage,
It is characterized by having means for releasing the static electricity to a commercial power supply. Thus, when the battery is charged to a certain voltage or higher, the static electricity is released to the commercial power supply, thereby preventing the static electricity from being discharged and the sound at the time of the discharge.

According to a second aspect of the present invention, the means for releasing generated static electricity to a commercial power supply connects the metal frame or the conductive resin frame and the commercial power supply with a surge absorbing element. Yes, by connecting a metal frame or the like and a commercial power supply via a surge absorbing element, the generated static electricity is temporarily stored, and when it is charged at a predetermined, predetermined potential or higher, the surge absorbing element discharges the static electricity. By discharging the static electricity to the commercial power source, even if the worker cannot connect the ground wire for the convenience of the site, the static electricity generated inside the automatic wallpaper gluing machine is kept below a certain potential,
Automatic wallpaper sizing machine eliminates discharge between unintended parts inside the automatic wallpaper sizing machine, prevents workers from fear of electrostatic discharge, and prevents the control unit from malfunctioning due to high voltage discharge. Can be obtained.

According to a third aspect of the present invention, there is provided an automatic wallpaper sizing machine for applying a paste to the back of a wallpaper, wherein static electricity generated inside the automatic wallpaper sizing machine is released to a metal frame or a conductive resin frame. The potential difference between the static electricity generating portion and the frame portion can be eliminated, and the discharge of static electricity can be suppressed.

According to a fourth aspect of the present invention, there is provided an automatic wallpaper sizing machine according to the third aspect, further comprising means for releasing static electricity generated on each roller provided in the wallpaper transport path to the metal frame or the conductive resin frame. This is to discharge the static electricity generated in each roller installed in the wallpaper transport path.

According to a fifth aspect of the present invention, there is provided an automatic wallpaper sizing machine according to the fourth aspect, wherein the bearing member of the roller is made of a conductive resin as a means for releasing static electricity to the metal frame or the conductive resin frame. The static electricity is released to the frame by using the bearing member as a conductive resin.

According to a sixth aspect of the present invention, as a means for releasing static electricity to the metal frame or the conductive resin frame, the roller shaft and the metal frame or the conductive resin frame are connected by a conductive spring. The automatic wallpaper sizing machine described above is used to release static electricity by connecting with a conductive spring.

By the above means, a conductive resin material is used for the bearing of the roller where static electricity is generated, and a conductive spring is brought into contact with the shaft of each roller, and the static electricity generated by the roller is automatically transferred to the wallpaper. Escape to the frame of the gluing machine, and making each roller and the frame the same potential, can eliminate static electricity discharge between each roller and the frame.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates a method for discharging static electricity generated in a roller of a gluing machine to a commercial power supply (15). The crosses (1) in FIG. 1 indicate the entrance to the path of the static electricity generated in each roller (that is, the static electricity escapes from the shaft end of each roller), and the black circles (2) indicate that the path is different from other paths. Merging (that is, the static electricity that escaped from the shaft end of each roller escapes to the metal frame of the gluing machine), and the arrow (3) indicates the direction in which the static electricity escapes (from the shaft end of each roller to the metal of the gluing machine). (Escape route to the frame).

A case where static electricity generated in the high tension roller (4) in FIG. 1 is released to the commercial power supply (15) will be described below. The high tension roller (4) starts to be charged by the static electricity generated by the wallpaper (A) and the high tension roller (4), and when the potential increases, the spring 3 is moved from the high tension roller shaft (25) shown in FIG.
After (26), the electric charge moves to the metal frame (12), and the metal frame (12) and the high tension roller (4) have the same potential. Therefore, the high tension roller shaft (25) and the metal frame (12). Does not occur. As shown in FIG. 1, the metal frame (12) is provided with a path for transferring the electric charge between other rollers, for example, a measuring roller (5) and a pressing roller (6). . Therefore, the metal frame (12), the measuring roller (5) and the pressing roller (6) also have the same potential, and the metal parts inside the automatic wallpaper gluing machine due to the static electricity generated inside the automatic wallpaper gluing machine. The electric charge accumulated in the metal frame (12) and each roller without generating the discharge of the metal frame (12) is transferred to the entrance (1) of the path provided in the metal frame (12).
From the arrestor (14) to the commercial power supply (1
You can escape to 5).

The arrester (14) is a voltage difference between both ends. In FIG. 1, when the potential difference between the left and right sides of the arrester (14) is small, the inside of the arrester (14) is in an insulated state, and the potential difference is small. When the potential is large, the inside thereof is in a discharge state, and discharges from a higher potential to a lower potential. Commercially available arrester (14)
In many cases, when the potential difference becomes several kV, the inside thereof becomes a discharge state, and at what voltage the inside becomes a discharge state is referred to as a discharge starting voltage. What is generally called a varistor is the same as the arrester (14).

The arrestor (14) whose discharge starting voltage is used depends on the voltage of the generated static electricity, the voltage of the commercial power supply to be used, and the control unit if the discharge is less than V. Can be determined from four factors: whether malfunctions occur, and how much V or less of discharge does not cause the worker to feel fear.

In this embodiment, the discharge starting voltage is about 2.4 k
V arrester (14) and commercial power supply (15) is 1
Since each roller and the metal frame (12) are charged to about 2.4 kV, the arrester (1) is used.
Discharge occurs inside 4), and static electricity can be released to the lower potential, that is, the commercial power supply (15).

Regarding the place where this arrester (14) is arranged, although it is inside the arrester (14), electromagnetic noise is generated by a discharge of several kV. It is desirable to provide as far away from the control unit (13) as possible to take measures against malfunction.

Next, FIGS. 2 and 3 show an example in which a path for releasing static electricity accumulated in a rotating roller to which the driving of the driving source is transmitted is provided. FIG. 2 is a view of the arrangement of the rollers of the gluing machine as viewed from above, and FIG. 3 is a view as viewed from the side.

The measuring roller (5) is a rubber roller and a roller that generates very static electricity. It rotates around the measuring roller shaft (20), and the measuring roller bearing (1)
9), and has a structure in which it moves up and down in accordance with irregularities on the surface of the wallpaper with the measuring roller bearing fulcrum (21) as a rotation center. A conductive resin, for example, a resin containing carbon, is used for the measuring roller bearing (19), and the static electricity generated in the measuring roller (5) is transmitted to the metal frame (12) via the spring 1 (17). In addition, static electricity is transmitted from the conductive resin measuring roller bearing (19) to the measuring roller bearing fulcrum (21) and the metal frame (12).

Similar effects can be obtained by the method using the pressing roller shaft (23), the pressing roller bearing (22), and the spring 2 (18) in FIG. That is, the static electricity accumulated in the holding roller (6) passes through the holding roller shaft (23) and the holding roller bearing (22), and the holding roller bearing (22).
It escapes from itself and the spring 2 (18) to the metal frame (12).

Further, in FIG. 1, a path for releasing static electricity generated in all the rollers in contact with the wallpaper (A) is provided, but the static electricity generated by the material of each roller and the material of the wallpaper (A) is provided. Since the amount varies, it is not always necessary to provide a path for discharging static electricity in a roller that generates a small amount of static electricity.

To illustrate, the sizing roller (8)
During the gluing operation, since the glue is attached, even if static electricity is generated, the static electricity is transmitted through the glue and escapes to the glue box (31) and the metal frame (12). Therefore, it is not always necessary to provide a path for static electricity. The flat roller is also the same as the gluing roller (8) because it is transmitted through the glue (from the glue on the back side of the glued wallpaper to the gluing roller).

As is clear from the above description, it is not necessary to newly install a grounding member for discharging static electricity to each rotating roller, so that the configuration can be made surely and well. The frame of the gluing machine may be made of a conductive resin instead of a metal. Metal frame (12)
Can be opened and closed at the upper and lower parts than before. However, a supplementary explanation is given that they are electrically connected by hinges or snap locks for opening and closing.

[0042]

As described above, by providing a path for discharging the static electricity generated by each roller to the metal frame (12) and making each roller and the metal frame (12) the same potential, each roller and the metal Eliminates static electricity discharge between the frame (12). Further, even if the worker cannot connect the ground wire for the convenience of the site, the accumulated charge (static electricity) is generated when each roller and the metal frame (12) have a predetermined potential or more due to the generated static electricity. Since the power can be released to the commercial power supply, an automatic wallpaper gluing machine can be obtained in which the worker does not feel fear due to the discharge of static electricity and does not malfunction the control unit.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a path for discharging static electricity.

FIG. 2 is a simplified illustration of the arrangement of rollers.

FIG. 3 is an explanatory diagram of a method of providing an electrostatic path on a roller.

FIG. 4 is an explanatory diagram of a method of providing an electrostatic path on a roller.

FIG. 5 is an explanatory view showing the configuration of a conventional automatic gluing machine.

[Explanation of symbols]

 A wallpaper 1 path entrance 2 path junction 3 direction of discharging static electricity 4 high tension roller 5 measuring roller 6 holding roller 7 flat roller 8 gluing roller 9 gluing roller 10 doctor roller 11 sending roller 12 automatic wallpaper gluing Metal frame of machine 13 Control unit of automatic wallpaper gluing machine 14 Arrester 15 Commercial power supply 16 Automatic wallpaper gluing machine 17 Spring 1 18 Spring 2 19 Inspection roller bearing 20 Inspection roller shaft 21 Inspection roller bearing fulcrum 22 Pressing roller bearing 23 Holding roller shaft 24 High tension roller bearing 25 High tension roller shaft 30 Cutter guide 31 Glue box

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuaki Matsui 190 Hikai, Tatsuno-cho, Tatsuno-shi, Hyogo Pref. Machine F-term (reference) 4F040 AA22 AB01 AC01 BA23 CB40 DB09

Claims (6)

[Claims] 1. An automatic wallpaper sizing machine for applying glue on the back of a wallpaper, wherein when static electricity generated inside the automatic wallpaper sizing machine is charged to a predetermined voltage or more, the static electricity is released to a commercial power supply. An automatic wallpaper sizing machine comprising: 2. A system according to claim 1, wherein said means for releasing generated static electricity to a commercial power supply connects the metal frame or the conductive resin frame and the commercial power supply with a surge absorbing element.
Automatic wallpaper gluing machine as described. 3. An automatic wallpaper sizing machine for applying glue to the back of a wallpaper, the automatic wallpaper sizing machine having means for releasing static electricity generated inside the automatic wallpaper sizing machine to a metal frame or a conductive resin frame. Gluing machine. 4. The automatic wallpaper sizing machine according to claim 3, further comprising means for releasing static electricity generated in each roller provided in the wallpaper transport path to the metal frame or the conductive resin frame. 5. The automatic wallpaper sizing machine according to claim 4, wherein the means for releasing static electricity to the metal frame or the conductive resin frame comprises a conductive resin as a bearing member of the roller. 6. The automatic wallpaper according to claim 4, wherein the roller shaft and the metal frame or the conductive resin frame are connected by a conductive spring as means for releasing static electricity to the metal frame or the conductive resin frame. Gluing machine.