JP4590622B2 - Automatic wallpaper pasting machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an automatic wallpaper pasting machine. More specifically, a path for discharging static electricity generated in the roller is provided so that malfunction due to discharge is eliminated, and the operator does not feel fear.
[0002]
[Prior art]
FIG. 5 shows a schematic configuration of a conventionally known automatic wallpaper pasting machine. From the side where the cloth (wallpaper) is inserted into the automatic wallpaper pasting machine, the measuring roller (5), delivery roller (11), high tension roller (4), doctor roller (10), glue roller (8), An upper glue roller (9), a presser roller (6), and a tear roller (7) are arranged. The wallpaper (A) to be glued is sandwiched between two rubber rollers, a measuring roller (5) and a feeding roller (11), and fed into the gluing machine main body.
[0003]
The measuring roller (5) is supported at both ends and can freely rotate. 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).
[0004]
By setting the outer diameter of this measuring roller (5) to a constant value, the amount of rotation of the roller is measured by some means (such as detecting a slit plate with an equally divided circumference), and the outer circumference of the roller It is possible to obtain the distance moved by one point on the circumference, that is, the length of the sent wallpaper (A). This information is always displayed on the pasting machine operation unit, and the operator can work while watching the situation. When the preset length is reached, the gluing machine stops automatically.
[0005]
After the machine stops, the operator runs the blade of the cutter knife along the cutter guide (30) to cut the wallpaper (A) to obtain the desired length of glued wallpaper (A).
[0006]
By adjusting the distance between the doctor roller (10) and the glue roller (8), the thickness of the glue adhering to the outer periphery of the glue roller (8) is adjusted, that is, the amount of glue on the wallpaper (A) is adjusted. . The layer of glue whose thickness is controlled comes into contact with the wallpaper (A) and transfers the glue to the back surface of the wallpaper (A). The glue is stored in a glue box (31) provided at the lower part of the main body. The glue in the glue box (31) is transferred to the glue roller (8) by the glue upper roller (9). Glue replenishment is performed by pulling out the glue box (31) and feeding glue from the opening formed above using a handle or the like, or by an automatic glue feeder.
[0007]
The glued wallpaper (A) equalizes the glue transferred by the glue roller (7) and is discharged from the front surface of the main body. The high tension roller (4) and the presser roller (6) function to make the glue uniform and smoothly transport the wallpaper (A).
[0008]
When cleaning the gluing machine, the glue remaining in the glue box (31) is returned to the bucket, etc., the glue roller (7) and the feed roller (11) are separated, and then glued with a sponge soaked in water. It is customary to wash the roller (8) and the doctor roller (10).
[0009]
[Prior art and its problems]
When the wallpaper (A) is glued, that is, conveyed by a roller, static electricity is generated due to friction between the wallpaper and the roller. The amount of static electricity generated varies depending on the material of the wallpaper, the material of the roller, the speed at which the wallpaper is discharged, the length of the wallpaper to be discharged at one time, and also depends on the surrounding environment at that time, especially in the dry season of winter and spring Many occur.
[0010]
As wallpaper materials, there are paper wallpaper, textile wallpaper, vinyl wallpaper, woody wallpaper, and inorganic wallpaper. Paper wallpaper generates relatively little static electricity, but vinyl wallpaper and inorganic wallpaper generate particularly much static electricity.
[0012]
There are rubber rollers, stainless steel rollers, aluminum rollers, carbon rollers, etc. depending on the role of the rollers used in the wallpaper gluing machine. Static electricity is generated with any of these rollers. There is a lot of static electricity.
[0013]
In addition to the material of the roller, there is a factor that generates static electricity not only in the speed of moving the wallpaper. As for the speed of discharging the wallpaper, in recent years, the speed of the pasting operation of the automatic wallpaper pasting machine has progressed, and in addition, the roller diameter has become smaller due to the downsizing of the automatic wallpaper pasting machine, The roller comes into contact with the wallpaper at a high speed and a large amount of static electricity is generated.
[0014]
On the other hand, most roller bearings of automatic wallpaper pasting machines use resin bearings because they want to use inexpensive and easy-to-slip materials. In such an automatic wallpaper pasting machine, when the wallpaper is conveyed by the roller, only the roller is charged by static electricity generated by friction between the wallpaper and the roller.
[0015]
A roller that discharges static electricity generated in the roller into the air is also used, but this roller also has a limit in the amount of discharge per unit time, and if a large amount of static electricity is generated in a short time, the roller is still charged It becomes a state. The charge amount of each roller is determined by the distance between the metal part (axis) of the roller and the metal frame of the automatic wallpaper pasting machine. In other words, as the distance increases, the amount of charge on the roller increases.
[0016]
In most automatic wallpaper gluing machines, the distance between the metal part (axis) of the roller and the metal frame of the automatic wallpaper gluing machine is several millimeters to several tens of millimeters, so the rollers are several kV to several tens kV or several When charged to 10 kV, discharge to the metal frame of the automatic wallpaper pasting machine occurs.
[0017]
If static electricity of several kV to several tens of kV or several tens of kV is discharged, this becomes electromagnetic noise, and the electronic parts of the control unit that controls the automatic wallpaper pasting machine, such as a microcomputer, may malfunction. The sparks fly from the door, and it makes a beeping sound.
[0018]
As a method of preventing static electricity discharge, the rotating roller bearing of the automatic wallpaper pasting machine and the metal frame are connected by an electric wire (ground wire), and the static electricity generated on the roller is released to the metal frame. In many cases, the frame is connected to the nearest ground (terminal connected to the earth) of the gluing work site and escaped to the earth, but the shaft of the rotating roller is connected to the metal frame. In many cases, the electric wire (ground wire) is worn due to friction with the rotating roller shaft, and the effect of escaping the static electricity generated in the roller to the metal frame is often not exhibited.
[0019]
In addition, in automatic wallpaper pasting machines that use a method of connecting static electricity to the earth (terminal connected to the earth) from the metal frame of the automatic wallpaper pasting machine to the nearest ground (terminal connected to the earth) at the pasting work site. In the actual site where the wallpaper is glued, most of the work is done in the room, and there is no wiring (grounding terminal) for connecting the grounding wire or the part for connecting the grounding wire (the metal part of the house, etc.) in the nearest place. For this reason, the work is often performed without connecting the ground wire, and the effect of this method cannot be exhibited.
[0020]
In this way, in situations where the ground wire cannot be connected (even if it is possible, the ground wire may not be connected), the only route for discharging static electricity is automatically on the concrete floor, like an apartment. At the site where the wallpaper gluing machine is placed and the gluing work is performed, a method of letting the ground from the automatic wallpaper gluing machine through the concrete to the ground can be considered. However, the automatic wallpaper gluing machine is insulated from the floor because it is installed with elastic rubber casters so that the floor is not damaged or soiled when moving in a room or hallway of a newly built house. Therefore, the method of releasing the charged static electricity from the legs cannot be fully effective.
[0021]
Moreover, although the method of making a caster with a conductive rubber can also be considered, since this method also has a wooden floor in wooden construction, this method cannot fully exhibit the effect.
[0022]
As described above, an automatic wallpaper pasting machine having means for releasing static electricity generated inside the automatic wallpaper pasting machine has not been invented by a method that can cope with the situation of various types of wallpaper pasting.
[0023]
[Means for solving the problems]
As means for solving the above-mentioned problems, the automatic gluing machine according to claim 1 is an automatic wallpaper gluing machine that applies glue to the back surface of the wallpaper. At least a measuring roller, a pressing roller, As means for releasing static electricity generated on each roller including the high tension roller to the metal frame or conductive resin frame, the roller bearing member is made of conductive resin, and the roller shaft and the metal frame or conductive resin frame are made of conductive springs. in connecting, when the static electricity generated in the interior with machine automatic wallpaper glue is charged above a predetermined voltage determined in advance, it has a means for releasing the static electricity to the commercial power source, as the means, and the metal frame or conductive resin frame A commercial power supply is connected by a surge absorbing element . As a result, when charged to a certain voltage or higher, static electricity is released to the commercial power supply, thereby preventing static electricity discharge and sound at the time of discharging, thereby providing a good appearance.
[0024]
Further, the means for releasing the generated static electricity to the commercial power source is characterized in that the metal frame or the conductive resin frame and the commercial power source are connected by a surge absorbing element. By connecting through the absorption element, the generated static electricity is temporarily accumulated, and when charged over a predetermined potential, it is discharged by the surge absorption element and the static electricity is released to the commercial power Even if the ground wire cannot be connected due to the circumstances of the site, the static electricity generated inside the automatic wallpaper pasting machine is kept below a certain potential and discharges between unintended parts inside the automatic wallpaper pasting machine are eliminated. Therefore, it is possible to obtain an automatic wallpaper pasting machine in which the fear of static discharge is not felt and the control unit does not malfunction due to high voltage discharge.
[0025]
In addition, in the automatic wallpaper pasting machine for applying glue to the back side of the wallpaper, the automatic wallpaper pasting machine has means for letting the static electricity generated inside the automatic wallpaper pasting machine escape to the metal frame or the conductive resin frame. The potential difference between the generation portion and the frame portion can be eliminated, and electrostatic discharge can be suppressed.
[0026]
It is intended that further comprising a means for releasing the static electricity generated in each roller installed in the transport path of the wallpaper in the metal frame or conductive resin frame, generated in each of the rollers installed in the transport path of the wallpaper The static electricity is released.
[0027]
As a means to release the static electricity to the metal frame or conductive resin frame, which was characterized in that a conductive resin bearing member of the roller, is intended to release the static electricity to the frame bearing member as a conductive resin .
[0028]
As a means to release the static electricity to the metal frame or conductive resin frame, which was characterized by connecting the roller shaft and the metal frame or conductive resin frame with a conductive spring, connected by a conductive spring By doing so, static electricity is released.
[0029]
By using the above means, a conductive resin material is used for roller bearings that generate static electricity, and a conductive spring is brought into contact with the shaft of each roller to automatically generate static electricity generated by the rollers. It is possible to eliminate the discharge of static electricity between each roller and the frame by letting the rollers and the frame have the same potential.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 illustrates a method for releasing static electricity generated on the rollers of the gluing machine to the commercial power source (15). The x mark (1) in FIG. 1 indicates the entrance to the path of static electricity generated in each roller (that is, the static electricity escapes from the shaft end of each roller), and the black circle mark (2) indicates that the path is different from other paths. This means that the static electricity escaping 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 static electricity is released (from the shaft end of each roller to the metal of the gluing machine). The route to escape to the frame).
[0031]
The case where the static electricity generated in the high tension roller (4) in FIG. 1 is released to the commercial power source (15) will be described below. When the high tension roller (4) starts to be charged due to static electricity generated by the wallpaper (A) and the high tension roller (4) and the potential becomes high, the high tension roller shaft (25) shown in FIG. Then, the electric charge moves to the metal frame (12), and the metal frame (12) and the high tension roller (4) are at the same potential, so the gap between the high tension roller shaft (25) and the metal frame (12). No discharge occurs. As shown in FIG. 1, the metal frame (12) is provided with a path for transferring 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 pressure roller (6) are also at the same potential, and between the metal parts inside the automatic wallpaper pasting machine due to static electricity generated inside the automatic wallpaper pasting machine. The electric charge accumulated in the metal frame (12) and each roller without causing the discharge of the electric power passes through the inside of the arrester (14) from the entrance (1) of the path provided in the metal frame (12), and is supplied with the commercial power source ( 15).
[0032]
This arrester (14) is the difference between the voltages at both ends. In FIG. 1, when the potential difference between the left side and the right side of the arrester (14) is small, the inside of the arrester (14) is insulative, and when the potential difference is large The inside is in a discharge state and has a feature of discharging from a higher potential to a lower potential. Many of the commercially available arresters (14) are in a discharge state when the potential difference reaches several kV, and the voltage at which the inside is in a discharge state is called a discharge start voltage. What is generally called a varistor is the same as this arrester (14).
[0033]
The control unit will not malfunction if the discharge start voltage is the arrester (14), what is the voltage of the generated static electricity, what voltage is the commercial power supply used, and what voltage is less than V It can be determined from the following four factors: how many volts or less of discharge the operator does not feel fear.
[0034]
In this embodiment, since the arrester (14) having a discharge start voltage of about 2.4 kV is used and the commercial power source (15) is using 100 V, each roller and the metal frame (12) are about 2.4 kV. When charged, discharge occurs in the arrester (14), and static electricity can be released to the one having a lower potential, that is, the commercial power source (15).
[0035]
Regarding the place where this arrester (14) is arranged, although it is inside the arrester (14), electromagnetic noise is generated by the discharge of several kV, so the arrester (14) is a control unit ( It is desirable to provide a position as far as possible from 13) and to take measures against malfunctions.
[0036]
Next, an example in which a path for releasing static electricity accumulated on a rotating roller to which driving of the driving source is transmitted is shown in FIGS. FIG. 2 is a view of the arrangement of the rollers of the gluing machine as seen from above, and FIG. 3 is a view as seen from the side.
[0037]
The measuring roller (5) is a rubber roller and generates very static electricity. A structure that rotates around the measuring roller shaft (20), is supported by the measuring roller bearing (19), and moves up and down according to the unevenness of the surface of the wallpaper, with the measuring roller bearing fulcrum (21) as the center of rotation. It has become. A conductive resin such as carbon-containing resin is used for the measuring roller bearing (19), and static electricity generated in the measuring roller (5) is transmitted to the metal frame (12) through the spring 1 (17). Moreover, static electricity is transmitted from the measuring roller bearing (19) of the conductive resin to the measuring roller bearing fulcrum (21) and the metal frame (12).
[0038]
Similar effects can be obtained by the method using the presser roller shaft (23), presser roller bearing (22), and spring 2 (18) shown in FIG. That is, the static electricity accumulated on the presser roller (6) escapes from the presser roller bearing (22) itself and the spring 2 (18) to the metal frame (12) through the presser roller shaft (23) and the presser roller bearing (22). It is.
[0039]
Moreover, in FIG. 1, although the path | route for releasing the static electricity which generate | occur | produced in all the rollers which contact wallpaper (A) is provided, the quantity of the static electricity which changes with the material of each roller and the material of wallpaper (A) changes. Therefore, it is not always necessary to provide a path for releasing static electricity in a roller that generates a small amount of static electricity.
[0040]
For example, the gluing roller (8) has gluing adhered during gluing work, so even if static electricity is generated, it is transferred to the gluing box (31) and the metal frame (12). And static electricity escapes. Therefore, it is not always necessary to provide a static electricity path. The glue roller is also similar to the gluing roller (8) because it travels through the gluing (from the gluing on the back side of the coated wallpaper to the gluing roller).
[0041]
As is clear from the above description, it is not necessary to newly attach a grounding member for discharging static electricity to each rotating roller, and the structure can be surely and well-structured. Further, the frame of the gluing machine may be made of conductive resin instead of metal. The metal frame (12) is openable and closable in the upper and lower parts. However, it will be explained as a supplement that it is electrically connected by a hinge or snap lock for opening and closing.
[0042]
【The invention's effect】
In this way, by providing a path for the static electricity generated by each roller to escape to the metal frame (12), and setting each roller and the metal frame (12) to the same potential, each roller, the metal frame (12), and Eliminate static discharge between the two. Furthermore, even if the worker cannot connect the ground wire due to the circumstances of the site, if each roller and the metal frame (12) exceed a certain predetermined potential due to the generated static electricity, the accumulated charge (static electricity) will be discharged. Since it can be escaped to a commercial power source, an automatic wallpaper pasting machine can be obtained without causing the operator to be afraid of static electricity discharge and without malfunctioning of the control unit.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a path for discharging static electricity. FIG. 2 is a simple explanatory view of arrangement of rollers. FIG. 3 is an explanatory view of a method of providing an electrostatic path on a roller. Fig. 5 is an explanatory diagram showing the configuration of a conventional automatic gluing machine.
A Wallpaper 1 Path entrance 2 Path junction 3 Escape direction 4 High tension roller 5 Measuring roller 6 Pressing roller 7 Peel roller 8 Glue roller 9 Glue roller 10 Doctor roller 11 Sending roller 12 Automatic wallpaper gluing Machine metal frame 13 Automatic wallpaper pasting machine control unit 14 Arrester 15 Commercial power supply 16 Automatic wallpaper pasting machine 17 Spring 1
18 Spring 2
19 Measuring roller bearing 20 Measuring roller shaft 21 Measuring roller bearing fulcrum 22 Pressing roller bearing 23 Pressing roller shaft 24 High tension roller bearing 25 High tension roller shaft 30 Cutter guide 31 Paste box

Claims (1)

In an automatic wallpaper pasting machine that applies glue to the back of the wallpaper,
As a means to release static electricity generated in each roller including at least a measuring roller, a pressing roller, and a high tension roller installed in the wallpaper transport path to the metal frame or conductive resin frame, the roller bearing member is made of conductive resin,
Connect the roller shaft and metal frame or conductive resin frame with a conductive spring,
When automatic picture pasting machine static electricity inside generated is charged above a predetermined voltage determined in advance, it has a means for releasing the static electricity to the commercial power source, as the means, and the commercial power source the metal frame or conductive resin frame An automatic wallpaper pasting machine characterized by being connected by a surge absorbing element .

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