JP4737481B2 - Paste feeder for wallpaper pasting machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention is used in a field that requires a device for stirring and supplying glue to a wallpaper pasting machine used when pasting wallpaper.
[0002]
[Prior art]
As glue supply pumps for wallpaper pasting machines, Japanese Utility Model Publication No. 59-154737, utility model registration No. 30333932, and the like are known as those that only supply glue. Although there is no description of the type of the pump, it is well known that a vane pump which is a paste supply pump for a wallpaper pasting machine on the market is used as disclosed in Japanese Utility Model Publication No. 62-36432.
[0003]
Further, a wallpaper paste supply device having a stirring function is also disclosed in Japanese Utility Model Laid-Open No. 6-11865, but as a power, a motor is attached to the bottom of the container, and a gear is used for stirring and supply. Is transmitted.
[0004]
[Problems to be solved by the invention]
As explained in the prior art, vane pumps are often used in the glue supply device for wallpaper gluers, but they sometimes break because of the high viscosity of the glue. For example, when used for many years, the glue with high viscosity hinders the movement of the vane in the pump and the glue does not come out, or the vane is stuck with glue and does not move, the pump breaks, and the glue leaks from the pump. There were problems such as happening.
[0005]
On the other hand, a trochoid pump is used for feeding a relatively viscous liquid. A hydraulic pump is an example. Durability is excellent but corrosion resistance is poor because it is made of metal. Therefore, when corrosion resistance is required, the surface of main parts such as an inner rotor, an outer rotor and a pump case is coated with a resin. For this reason, although corrosion resistance increases, there was a tendency to become expensive.
[0006]
The above problem can be solved by using a synthetic resin having excellent corrosion resistance as a material for the trochoid pump and manufacturing the trochoid pump with a strength sufficient to withstand the viscosity of the paste.
[0007]
In addition, when the inner rotor, outer rotor, and pump case of the trochoid pump are made of synthetic resin, the synthetic resin thermally expands due to frictional heat due to rotation, and the members stick together. In order to prevent this phenomenon, the amount of thermal expansion of each component made of synthetic resin is predicted, and an appropriate amount of gap corresponding to this is provided between the components.
[0008]
Specifically, an appropriate amount of gap is provided at a portion where the outer rotor and the pump case are in contact. Both the inner rotor and the outer rotor are in contact with the glue, the temperature conditions of both are the same, and the thermal expansion is almost the same, so there is no need to provide a gap in consideration of the thermal expansion.
[0009]
In the case of using only the glue supply pump to the wallpaper pasting machine, it is necessary to mix the glue with water in advance and adjust the viscosity to be suitable for the wallpaper pasting machine. In response to this, the paste feeder shown in Japanese Utility Model Laid-Open No. 6-11865 is shown. When a failure occurs in the pump, the glue leaks from the pump, and the glue adheres to the motor of the power. In the trochoid pump, no adhesion of glue occurs, so the motor does not break down.
[0010]
Further, when the trochoid pump is changed from forward rotation to reverse rotation, it is possible to change from discharge to suction. Therefore, the remaining glue that has been supplied to the wallpaper pasting machine after finishing the pasting of the wallpaper can be recovered. As a result, it becomes easy to clean the paste box of the pasting machine after the operation.
[0011]
[Means for Solving the Problems]
The invention according to claim 1 uses a trochoid pump as a means suitable for supplying high-viscosity glue in a supply device for supplying glue to a wallpaper gluing machine, and its material is excellent in durability and corrosion resistance. It is a synthetic resin.
[0012]
The trochoid pump is suitable as a supply device for a viscous liquid so as to be used as a hydraulic pump. When the material to be supplied is a paste, it is a paste having a high moisture content unlike oil, and therefore, it is necessary to apply a material having high corrosion resistance to the pump. Of course, the function as a pump is necessary. A synthetic resin was selected as a material that satisfies the strength, durability, and corrosion resistance.
[0013]
Furthermore, an appropriate amount of clearance is provided between the outer pump and the pump case in consideration of the temperature rise that occurs while the trochoid pump continues to supply the glue and the thermal expansion of the pump members.
[0014]
Since the outer pump and the inner pump have substantially the same contact area and temperature conditions with the glue, and the thermal expansion amounts are almost equal, it is not particularly necessary to increase the gap between the contact portions. Accordingly, there is no influence on the discharge amount of glue.
[0015]
In addition, in order to reduce the overall weight of the device and reduce energy consumption, the drive source as power is combined into one with the functions of both the glue supply pump and glue stirrer, and the position of the gear for power transmission on the drive source side Is variable, and the transmission of driving can be arbitrarily switched to either the glue supply pump or the glue stirrer.
[0016]
According to the second aspect of the present invention, the glue supplied to the wallpaper pasting machine can be returned to the glue feeding apparatus side again. When the rotation of the motor is changed from normal rotation to reverse rotation and the trochoid pump is rotated reversely, the paste changes from discharge to suction, and the glue remaining in the wallpaper pasting machine can be returned to the glue supply device. Of course, it is also possible to change the rotation direction of the motor again and supply the paste of the supply device to the pasting machine side.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the wallpaper paste supply device of the present invention will be described with reference to FIG. 1 is a paste supply device for a wallpaper pasting machine, 6 is a container for paste A, 4 is a stirrer, 3 is a power motor of a trochoid pump for stirring and supplying paste, 8 is a discharge outlet pipe for supplying paste, It is attached through the bottom. Reference numeral 7 denotes a stand that also serves as a housing for the devices, and 9 denotes a support frame that fixedly supports the motor 3, the trochoid pump 2, and the like. The upper part of the support frame 9 is fixed to the top of the table 7 with screws. Reference numeral 18 denotes a caster for moving the supply device main body.
[0018]
In order to arbitrarily change and transmit the power of the motor 3 to the stirrer 4 or the trochoid pump 2, there is a gear 32 fixed to the shaft 31 of the motor 3 and a gear 5 that always meshes with the gear 32 and rotates. The shaft 51 of the gear 5 is pivotally supported at one end of a substantially L-shaped support arm 19 shown in the plan view of FIG. 2, and the support arm 19 is fixed to the support frame 9 at a position concentric with the shaft 31 of the motor. It is attached to be freely rotatable. The gear 5 rotates about the shaft 33 by horizontally moving the handle 10 at the end of the L-shaped long arm, and the gear 43 or the shaft of the trochoid pump 2 fixedly attached to the shaft 41 of the agitator 4. This is a mechanism that meshes with the gear 22 mounted on the gear 21.
[0019]
As shown in FIG. 3, the trochoid pump 2 includes an inner rotor 2a, an outer rotor 2b, a pump case 2c, a shaft 21, a glue inlet 2d, and a glue outlet 2e. As described in the problem of the prior art, since the member needs to have high corrosion resistance, the material of the main part described above is made of synthetic resin. For example, polyacetal resin or the like is adopted for the pump case 2c in a portion in contact with the inner rotor 2a, the outer rotor 2b, and the outer peripheral surface of the outer rotor 2b.
[0020]
Further, in order to prevent the member contact portion from sticking due to the thermal expansion of the member that occurs during use, an appropriate amount of clearance is provided between the pump case 2c and the outer rotor 2b to absorb the expansion due to heat. In the case of the size of the trochoid pump 2 given in the embodiment (about 90 mm long * 90 mm wide * 20 mm thick), the gap is about 0.2 to 1.0 mm. When the liquid to be pumped by a trochoid pump is starch paste for wallpaper application, the viscosity is generally higher than the oil used in this pump and its lubricity is poor. it can.
[0021]
The operation of supplying glue A to the wallpaper pasting machine 50 using the apparatus of the present invention will be described. Starch glue powder and water are placed in a container 6 in a predetermined distribution, and the handle 10 is pulled to the position 10 ', and the gear 5 is moved to the position 5' in FIG. Mesh with. When a switch (not shown) of the motor 3 is turned on, the rotation of the motor 3 is transmitted by the gears 32, 5 ', 43 and the agitator 4 starts to rotate.
[0022]
When the glue A in the container is agitated in a state suitable for wallpaper pasting, the motor 3 is temporarily stopped. The gear 5 (position 5 in FIG. 2) meshed with the gear 43 of the agitator 4 is moved to the position 5 in FIG. 2 by rotating the handle 10 and meshed with the gear 22 of the trochoid pump 2. The motor 3 is started again, and the trochoid pump 2 sucks the glue A in the container from the inlet 2d and supplies it to the glue box 53 of the wallpaper pasting machine 50 through the outlet 2e and the hose 52.
[0023]
In addition, by rotating the motor 3 in the opposite direction to that during supply, the glue remaining in the glue box 51 of the wallpaper pasting machine 50 can be returned to the container 6 of the glue feeder 1. This enables the rotation direction to be changed from normal to reverse or from reverse to normal by a rotation direction indicating switch (not shown).
[0024]
The above explanation is from the stirring of water and paste powder to the supply and suction of the paste, but water is added to the paste paste stock solution and put into the container 6 and stirred with the stirrer 4 or already wallpaper paste. Naturally, it is also possible to put the paste A that can be used in the application into the container 6 and supply it to the wallpaper pasting machine 50 by the trochoid pump 2. Similarly, it is possible to use only suction. Further, in the operation of stirring and dissolving the paste A with the stirrer 4, the rotation direction of the motor 3 can be either forward or reverse.
[0025]
【The invention's effect】
By using a synthetic resin trochoid pump for the glue supply device for wallpaper glue, the glue found in conventional vane pumps may stick and the pump may become stuck or corrode. Corrosion resistance and durability improved. In addition, the agitation of the glue, the supply of glue to the wallpaper gluing machine, and the suction and collection of the glue remaining in the wallpaper gluing machine are the same by changing the position of one small-capacity motor as the power and the gear for driving transmission. This has become possible within the equipment, saving more labor. There is also an economic effect as a device.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing the overall configuration of the apparatus of the present invention, with a stirrer part (a) and a motor and trochoid pump part (b).
FIG. 2 is a horizontal sectional view of an apparatus part of the device of the present invention. FIG. 3 is a longitudinal sectional view (a) and a planar sectional view (b) of a trochoid pump according to an embodiment.
FIG. 4 is a diagram showing the supply of glue from the paste supply device for wallpaper pasting machine of the present invention to the wallpaper pasting machine.
A Glue 1 Glue feeder for wallpaper gluing machine 2 Trochoid pump, 2a Inner rotor, 2b Outer rotor, 2c Pump case, 2d inlet, 2e Outlet 3 Motor 4 Stirrer 5, 5 'Gear 6 Container 7 Unit 8 Discharge port tube 9 Plate 10 handle 18 caster 19 support arm 21 shaft 22 gear 31 shaft 32 gear 33 shaft 41 shaft 43 gear 50 wallpaper pasting machine 51 shaft 52 hose 53 paste box

Claims (2)

In glue supply device for a machine with a wallpaper paste supplying glue to wallpaper pasting machine, using a trochoid pump as glue feeder, Ri of the pump inner rotor, the material of the outer rotor and the pump casing synthetic resin der,
It has both functions of a glue supply pump and a glue stirrer. A motor is used as a power source for the glue supply pump and glue stirrer, and the gear position for power transmission on the drive source side is variable. Optionally, drive transmission to either the glue supply pump or glue stirrer,
A gear shaft that always rotates in mesh with a gear fixed to the motor shaft is supported by one end of the support arm, and the support arm is rotatably attached to a shaft fixed to the support frame at a position concentric with the motor shaft. The support frame can be switched by moving the handle at the end of the support arm horizontally so that the support frame rotates about an axis fixed to the support frame. A glue supply device for wallpaper pasting machines. When the gear for power transmission on the drive source side is positioned on the paste supply pump side, the drive source is operated so as to rotate in the direction opposite to the rotation direction for supplying glue, thereby claim 1 glue supply device for wallpaper pasting machine, wherein the to suck the paste from the discharge port.

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