JPH0262317B2 - - Google Patents

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention is applicable to processing fluids (hereinafter simply referred to as processing) such as treated water, water, oil, etc. in the processing of glass and plate materials (hereinafter simply referred to as processing). The present invention relates to a nonwoven fabric roll device having a negative pressure function used for the purpose of suctioning and removing water (explained as water or moisture).

"Prior art and its problems" Conventional processing involves various processes such as a suction process, a cleaning process, a chemical treatment process, and a drying process, and the process is mainly performed using rubber rolls, fabric wrapping rolls, etc. .

By the way, among the various steps in the processing of this type of material, the so-called drying step consumes a large amount of energy, so in the so-called dehydration step, which is the preceding step, it is necessary to reduce the moisture reduction rate of the processed material. Can improve fuel cost savings,
It is said to be of great help in energy and resource conservation by improving productivity and reducing the amount of water and processing fluid used, but how to ingest water in this dehydration process has been a major issue.

As a means to solve this problem, as an alternative to the conventional rubber roll, an approximate sponge roll,
A roll in which a sponge is wrapped around a so-called cylindrical shaft body has been proposed, and it exhibits a considerable dewatering effect. Further, as a similar technical document, there is a plate glass washing water suction device disclosed in Japanese Patent Application Laid-Open No. 51-34916.

However, in this invention, once the sponge roll becomes saturated (wet) with suction moisture, the subsequent suction effect cannot be expected at all.

In addition, since the member wound around the shaft body is a cylindrical integral sponge, and the structure is such that one sponge roll is strongly pressed against the glass plate, it is especially important for the pressed sponge roll to Problems can be considered, such as the fact that there is no escape allowance for the sponge at the acute-angled end face of the glass plate, and the sponge is likely to crack or break.

In addition, treated water, water, and processing liquid pools (hereinafter simply referred to as liquid pools) are likely to occur on the acute-angled end faces, and once these liquid pools occur, they develop at an accelerated pace, and ultimately Fine droplets are generated on the surface. Therefore, residual marks caused by the droplets remain on the processed workpiece, resulting in a problem of quality deterioration or the necessity of reprocessing, resulting in a problem of decreased work efficiency.

On the other hand, as a device that provides a suction function to the roll body to suck water or dust on the roll surface, there are a sheet cleaning device disclosed in Utility Model Publication No. 52-28992, a suction roll device disclosed in Japanese Patent Publication No. 47-16774, or Technical documents such as Japanese Patent Publication No. Sho 57-23750 on a diaphragm device can be cited.

However, these ideas or inventions have a structure in which the difference in air pressure between the inside and outside required for suction does not occur in the roll body.
In the invention of No. 52-28992, it is an essential condition to surround the brush roll with a case, which creates problems such as a complicated structure, troublesome maintenance of the brush roll, etc., and a decrease in work efficiency due to machine stoppages. . In particular, residue marks caused by droplets remain on both end surfaces of the object to be processed, resulting in a problem of quality deterioration or the need for reprocessing, which causes a problem of decreased work efficiency. There are also major challenges.

On the other hand, even in the suction roll device of Japanese Patent Publication No. 47-16774 or the expansion device of Japanese Patent Publication No. 57-23750, since the above-mentioned internal and external pressure difference is not established, only a partial suction method can be adopted.

Therefore, in this treatment device, the water absorption capacity of the nonwoven fabric roll is limited, and it lacks versatility and sufficient water absorption capacity is not exhibited.In addition, the moisture removal from the nonwoven fabric roll is not efficient at the stage of contacting the object to be treated. This poses problems as a water absorbing roll, as it may not be able to exhibit sufficient water absorbing ability, and marks caused by residual water droplets may remain on the object to be treated, which may cause the same problems as mentioned above. Further, problems caused by residual marks caused by droplets on both end faces of the object to be processed can naturally be considered.

In addition, as a nonwoven fabric roll having a structure in which a hygroscopic material such as a disc-shaped nonwoven fabric (hereinafter simply referred to as nonwoven fabric) is pressed together, there is an invention of a moisture absorption roll in JP-A-50-57445.

However, this invention simply has a structure in which nonwoven fabrics are pressed together, and the above-mentioned internal and external pressure difference (same as the internal and external pressure difference in the present invention) is not formed in the wet nonwoven fabric roll. Also, it does not have a suction function.

"Means for Solving the Problems" The present invention solves the above-mentioned problems by providing a suction effect to both end surfaces of the processed object to prevent the generation of minute droplets there, and In addition, in order to eliminate residual marks caused by droplets, avoid quality deterioration or eliminate the need for reprocessing, and improve work efficiency, the following configuration was adopted.

That is, a cylindrical shaft body having a cavity in the longitudinal direction of the shaft and a large number of through holes communicating with the cavity on the peripheral surface of the shaft; a pair of bearing parts having at least one of them a through hole that is provided and communicates with the hollow part; a pump that is installed in the through hole of the bearing part via a hose; and an appropriate density in the shaft body. A large number of disc-shaped nonwoven fabrics are inserted, and the inserted nonwoven fabrics are crimped and superimposed in the axial direction through press molding, and the axial When suctioning fluids such as water and processing liquid into the main body, a crimped state in which the pressure difference between the inside and outside of the crimped and superimposed nonwoven fabric is maintained at 0.5 atm to 0.8 atm, and a fiber density state (hereinafter, both states are simply referred to as the crimped and superimposed nonwoven fabric). By maintaining the pressure difference between the inside and outside of the non-woven fabric roll, which is constructed of a non-woven fabric roll (which is assumed to be in the state of water is sucked into the shaft body.

Further, the present invention is configured such that the nonwoven fabric roll is maintained in a substantially dry state at all times during the process in which it comes into contact with the object to be treated, thereby making it possible to efficiently and reliably remove moisture.

That is, when the nonwoven fabric roll comes into contact with the object to be treated, the nonwoven fabric roll first exhibits its inherent suction ability, and the nonwoven fabric roll naturally absorbs the water.

During the process of rotation of the nonwoven fabric roll, this moisture is almost instantaneously sucked toward the nonwoven fabric roll through the suction function of the pump, and then sucked into the shaft body, and then discharged to the outside.

Thereby, the next time the nonwoven fabric roll comes into contact with the object to be treated, it is maintained in a substantially dry state.

Specifically, the nonwoven fabric roll of the present invention is composed of a nonwoven fabric with an appropriate density and has self-water absorbing properties, and the suction function of the pump ensures that the nonwoven fabrics constituting the nonwoven fabric roll are tightly overlapped with each other. This nonwoven fabric roll device is press-molded in a manner that gives the nonwoven fabric roll its own suction ability, and the roll portion maintains a differential pressure state between the inside and outside through the suction function of the pump.

"Function" The working state (suction state) of the present invention will be explained below. First, the process of dehydrating, deliquing, neutralizing, etc. the workpiece by employing the nonwoven fabric roll having the above structure will be explained. , when a pair of nonwoven fabric rolls are arranged opposite each other as shown in FIG. (Hereinafter, B is a nonwoven fabric roll for suction).

A device in which a pump is connected to the nonwoven fabric roll B through a hose or other joint equipment corresponds to the nonwoven fabric roll device according to the present invention.

First, the example shown in FIG. 4 is a schematic diagram in which a workpiece C is inserted between nonwoven fabric rolls A and B, and a coating film of a liquid such as oil is formed on the workpiece C.

In this example, the mechanism is such that fluid such as water is blown out from one nonwoven fabric roll via a pump and sucked by the other nonwoven fabric roll.

Specifically, the liquid constantly or intermittently overflows from the surface of the nonwoven fabric roll A through the through hole of the nonwoven fabric roll A → cavity → through hole → (or subchamber →) via a pump.

Then, when the fluid is sucked from the nonwoven fabric roll B according to the present invention (hereinafter simply referred to as nonwoven fabric roll B) simultaneously or intermittently, the fluid passes through the object C and is sucked from the surface of the nonwoven fabric roll B. The fluid is sucked through the nonwoven fabric roll → (or subchamber →) through hole → cavity → through hole, and is pumped to outside the nonwoven fabric roll device such as a liquid storage chamber or a discharge tank (not shown, the same applies hereinafter). ) is discharged.

As a result, the liquid overflows from the surface of the nonwoven fabric roll A constantly or intermittently, and as a result,
A thin coating film is formed on the surface of the object C to be treated.

Moreover, the example of FIG. 5 is a schematic diagram of the process of dehydrating the processed material C between the nonwoven fabric rolls B.

In this example, fluid such as water that adheres to or impregnates the object C is pumped to both nonwoven fabric rolls B,
This is a mechanism that draws air between B and B.

Specifically, fluid is sucked from the surface of one nonwoven fabric roll B via a pump → (or subchamber →) through hole → cavity → through the through hole, and is discharged outside the nonwoven fabric roll device. Ru.

Similarly, the fluid is sucked in from the surface of the other nonwoven fabric roll B via the pump → (or subchamber →) through hole → cavity → through the through hole, and is discharged to the outside of the nonwoven fabric roll device. .

In this way, the fluid of the object C is removed.

Specifically, for example, nonwoven fabric roll B in FIG.
As is clear from the schematic diagram of the wetting process showing the fluid absorption of , exerts its inherent self-suction ability and absorbs the moisture into the nonwoven fabric roll B.
It absorbs water by itself, and also has sufficient self-water absorption function by absorbing water in almost dry areas.

The water absorbed by the nonwoven fabric roll B is
Due to the rotation of the nonwoven fabric roll B and the suction of the pump, as described above, the fluid is sequentially sucked inward toward the nonwoven fabric roll B, and while the nonwoven fabric roll B has rotated approximately half a rotation, the absorbed fluid enters the hollow part of the shaft body. Eventually, it is removed from the nonwoven fabric roll apparatus.

On the other hand, when the nonwoven fabric roll B comes into contact with the object C again, a substantially dry state is maintained.

In addition, as shown in FIG. 7, in the case of a hard object C, for example, an acute-angled end face C' of a plate glass, an allowance for relief of the nonwoven fabric is generated, and the incidence of cracks, cuts, etc. in the nonwoven fabric is reduced; In addition, the nonwoven fabric fits well to this end surface C′, and the gap C″ formed here is
It is extremely small.

In particular, since the gap C'' is small, the area where the liquid accumulates is small, and this gap
The suction effect of the pump also acts on C″.

Therefore, the fluid is reliably removed and fine droplets are not generated on both end surfaces C' of the object C.

Further, as a result, no residual mark is generated on the processed object C due to droplets. Moreover, this greatly contributes to improving quality and eliminates the need for reprocessing, which greatly contributes to improving work efficiency.

“Embodiment” An embodiment of the present invention will be described below with reference to the drawings. 1 has bearing portions 2 and 2a (hereinafter simply 2
This is a cylindrical shaft body with a
A hollow portion 3 is opened in the shaft portion 5 in the longitudinal direction (hereinafter referred to as the axial direction), and a large number of transparent holes communicating with the hollow portion 3 are formed on the circumferential surface of the shaft portion 5. Hole 4 has been opened.

Further, one of the hollow portions 3 opened in the shaft portion 5 of the shaft body 1 has a through hole 6 provided through the one bearing portion 2.
The structure is such that it communicates with

The through hole 6 of one of the bearing parts 2, which communicates with the hollow part 3 of the shaft part 5, is connected to a blowing and suction means (not shown) such as a pump or cylinder through a hose (not shown). .

Further, in the illustrated and above-mentioned example, the through hole 6 is
Although this structure is provided in one bearing part 2, it is of course possible to provide each in both bearing parts 2 and 2a.

In general, when a cylinder is attached, a piston is inserted into the cavity 3, at least one bearing part 2 has a large diameter, and the cavity 3, etc. has a large diameter.
The structure shall include connecting piping equipped with on-off valves, etc., and providing safety valves, etc.

7 is a side plate fixed to one end of the shaft body 1, and 9 is a side plate fixed to the other end of the shaft body 1. Between these both sides plates 7 and 9 is a disc-shaped disk which will be described later, and as appropriate. Nonwoven fabrics, which will be described later, having a density of

8 is a disc-shaped nonwoven fabric formed by punching a nonwoven fabric sheet (not shown). After forming a large number of pieces of this nonwoven fabric 8 and fixing the side plate 7 to one end of the shaft main body 1, A large number of disc-shaped nonwoven fabrics 8 are inserted into the shaft body 1.

Then, after crimping by press molding and superimposing a large number of nonwoven fabrics 8 in a crimped manner, a side plate 9 is attached to the other end.
A nonwoven fabric roll B or A is constructed by fixing them.

First, the suction nonwoven fabric roll B is used to press and overlap the press-molded nonwoven fabric B in the axial direction, and to suck fluid to the shaft body 1 via the pressed and overlapped nonwoven fabric 8' and a pump to be described later. In other words, when a negative pressure is applied to the nonwoven fabric roll B via the nonwoven fabric roll B and the pump and the nonwoven fabric roll B is substantially used for suction, the pressure difference between the inside and outside of the pressed and superimposed nonwoven fabric 8' is 0.5 atm or more.
It is configured in a crimped state and a fiber density state maintained at 0.8 atmospheres.

As a result, the suction nonwoven fabric roll B of the present invention
is configured.

The nonwoven fabric roll A for blowing is also constructed in substantially the same manner, but when the press-molded nonwoven fabric 8 is crimped and superimposed in the axial direction, the axial body 1 is In other words, when applying negative pressure to the nonwoven fabric roll A through the nonwoven fabric roll A and the pump and using it for blowing out, the inside and outside of the crimped and superimposed nonwoven fabric 8' are It is configured in a crimped state and a fiber density state where the differential pressure is maintained at 5 atm to 0.5 atm.

Then, the bearing parts 2, 2a of the nonwoven fabric roll B or A are supported, for example, by a bearing part installed in a processing machine. A large number of nonwoven fabric rolls B or A are supported on this bearing in the same manner.

Furthermore, as shown in FIG. 3, it is also possible to adopt a structure in which a sub-chamber 11 is provided, and in this example, a plurality of spacers 12 are provided on the outer peripheral surface of the shaft body 1, preferably at equal intervals, extending in the axial direction. The nonwoven fabric 8 is superimposed on the spacer 12 in a crimped manner, and as described above, the pressure difference between the inside and outside of the crimped and superimposed nonwoven fabric 8' is 0.5 atm to 0.8 atm.
It is configured in a crimped state and a fiber density state maintained at atmospheric pressure.

As a result, a suction nonwoven fabric roll B having a plurality of axially elongated auxiliary chambers 11 on the outer circumferential surface in the axial direction 1 and having a fluid reservoir chamber is configured.

The nonwoven fabric roll A for blowing is also constructed in almost the same way, but when the press-molded nonwoven fabric 8 is crimped and stacked in the axial direction, the pressure difference between the inside and outside of the crimped and stacked nonwoven fabric 8' is 5 atm to 0.5 atm. They are configured in a closely superimposed state that is ensured.

By providing this fluid reservoir chamber, it is expected that the blowing and suction effects of the present invention will be further improved.

"Method for Manufacturing Nonwoven Fabric Roll, etc." Next, an example of the manufacturing method and suction effect of nonwoven fabric roll B will be explained with reference to Examples.

This is an example of a metal sheet cleaning process application.

The dimensions of the nonwoven fabric roll B are 250 mm in diameter and an effective length in the axial direction of 1.500 mm.

The disc-shaped nonwoven fabric 8 is made of a polyester fiber nonwoven fabric material having a fiber diameter of 3 μm, a thickness of 2 mm, a fiber density of 0.35 g/cm ³ , and a porosity of 70%, entangled with a rubber binder.

The shaft portion 5 of the shaft body 1 also has a side plate 9 on one side.
The tube was made of a hollow tube with a diameter of 175 mm and a wall thickness of 15 mm, with 8 rows of 6 mm diameter through holes 4 spaced at 60 mm intervals, arranged in a staggered pattern, and 168 holes were opened all over the circumference. A through hole 6 is provided in the bearing part 2, and a side plate 7 is provided in the threaded part 2a provided in the bearing part 2.
The side plate 7 is fixed with a nut 7a having a screw.

As shown in FIGS. 8 to 10, the press machine 20
The roll main body is constructed by fitting 1,500 sheets of nonwoven fabric 8 onto the shaft main body 1 with side plates 9 which are erected via chucking means 21.

At this time, 40 sheets of the nonwoven fabric 8 are made into one block and fixed by applying a pressure of 10 tons (30 kg/cm ² ).

Subsequently, the next block of 40 nonwoven fabrics 8 is inserted into the shaft body 1, and this block is fixed by applying a pressure of 10 tons.

The operation detailed above is then repeated 35 times, each time applying 10 tons of pressure.

In the final step, the number of nonwoven fabrics 8 is set to 60 in consideration of the total number of fabrics and the dimensions of the roll, and then the roll body is fixed by similarly applying a pressure of 10 tons.

Therefore, as described above, one side plate 7 is screwed through the nut 7a, and the surface smoothing means employed in the conventional rolling method is taken.

In the figure, 22 is a press guide for the nonwoven fabric 8.

In the roll body configured as above,
The nonwoven fabric 8 is compressed by 50% and its density is 0.7
g/cm ³ , a porosity of 40%, and a pore (capillary) radius of 5.5μ.

This nonwoven fabric roll B is used as a pair, and a vacuum pump with a diameter of 50A (2B) - 5.5KW (air suction amount 2.98m ³ ; 1.26m ³ /min per roll surface area (2.36m ² )) is installed in the through hole 6 of this nonwoven fabric roll B. ) was connected and the pump was activated, a differential pressure between the inside and outside (-) of 60 mmHg (0.79 atm) was generated due to the resistance of the roll body.

In addition, at a process line speed of 200 m/min, the water content on the inlet side between the nonwoven fabric rolls 8 was set to be such that a water film of 8 gm/m ² remained after the liquid was absorbed and removed by a conventional rubber roll.

Then, as a result of passing between the nonwoven fabric rolls B, the finished product was 0.25gm/m ² on the exit side of the nonwoven fabric roll B, that is, 0.25μ in terms of film thickness. Liquid absorption processing amount is 2.0
It became /min.

Therefore, at this film pressure, self-evaporation and drying occur in an extremely short period of time, although there may be slight variations depending on relative air velocity, temperature conditions, etc., and an almost dry state can be obtained with this nonwoven fabric roll device. Ta.

"Effects of the Invention" As detailed above, the present invention provides a nonwoven fabric roll for suction by inserting a large number of disc-shaped nonwoven fabrics into a shaft body, and then press-molding the large number of nonwoven fabrics. A close superposition state in which the difference between the inside and outside of the crimped and superimposed nonwoven fabric is maintained at 0.5 atm to 0.8 atm when fluid is suctioned into the shaft body through the crimped and superimposed nonwoven fabric and the pump. It is configured to do this.

Therefore, a suction effect is applied to both end surfaces of the workpiece to prevent minute droplets from being generated there, and to eliminate residue marks caused by droplets on the processed workpiece, thereby preventing quality deterioration. This has the effect of improving work efficiency by avoiding the need for reprocessing or by eliminating the need for reprocessing.

In addition, the nonwoven fabric roll of the present invention is made of a nonwoven fabric with an appropriate density, has self-water absorbing properties, and is press-molded so that the suction function of a pump ensures a close superposition of the nonwoven fabrics that make up the nonwoven fabric roll. This nonwoven fabric roll device has a structure in which this nonwoven fabric roll is naturally endowed with suction ability, and a predetermined internal and external pressure differential state is maintained in this nonwoven fabric roll through the suction function of the pump.

Therefore, when the nonwoven fabric roll comes into contact with the object to be treated, the nonwoven fabric roll first exhibits its inherent suction ability, and the nonwoven fabric roll absorbs the water by itself.

During the process of rotation of the nonwoven fabric roll, this moisture is almost instantaneously sucked toward the nonwoven fabric roll through the suction function of the pump, and then sucked into the shaft body, and then discharged to the outside.

As a result, the nonwoven fabric roll is maintained in a substantially dry state at all times during the process in which it comes into contact with the object to be treated, and has the practical effect of enabling efficient and reliable moisture removal.

Furthermore, as described above, the present invention provides a structure in which a large number of disc-shaped nonwoven fabrics are inserted into a shaft body having a suction structure, and then the nonwoven fabrics constituting the nonwoven fabric roll are compressed and overlapped using press molding. In this configuration, a close superposition state is formed.

Therefore, even if a large external pressure is applied to the surface of the nonwoven fabric roll, escape occurs. That is, by creating an allowance on the surface of the nonwoven fabric roll,
This has the effect of reducing the damage and significantly extending the life of the nonwoven fabric roll.

In addition, the gap between the liquid pools becomes smaller, which reduces the amount of liquid accumulated, and the pump's suction function also works effectively. Furthermore, droplets (water droplets) remain on both end surfaces of the processed product, and there are no residual marks, spots, etc. on the processed product, and an improvement in quality can be expected. It also eliminates the need for reprocessing, which solves problems faced in the field.

Furthermore, disc-shaped nonwoven fabrics are press-molded and pressed one on top of the other to form a predetermined pressure difference between the inside and outside of the nonwoven fabric roll.

Therefore, uniformity of the nonwoven fabric density of the nonwoven fabric roll, uniformity of hardness and softness, uniformity of suction or blowing function, and uniformity of capillary micropores are achieved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view of a nonwoven fabric, Fig. 2 is a sectional view showing an example of a nonwoven fabric roll, and Fig. 3 is an example of another nonwoven fabric roll. The cross-sectional views shown in Figures 4 and 5
The figure is a reduced schematic diagram showing the state of use, Figure 6 is a schematic diagram of the wetting process of the nonwoven fabric roll for suction, and Figure 7 is an explanatory schematic diagram showing the relationship between the end surface of the workpiece and the nonwoven fabric roll in an enlarged manner. , Fig. 8 is an enlarged sectional view with some parts omitted showing the manufacturing status of the nonwoven fabric roll, Fig. 9 is an enlarged sectional view showing the crimped state of the last block, and Fig. 1
Figure 0 is an enlarged sectional view of the main part showing the tightened state. 1: Shaft body, 2, 2a: Bearing part, 3: Cavity part,
4: Through hole, 5: Shaft portion, 6: Through hole, 7, 9: Side plate, 8: Nonwoven fabric, 8': Nonwoven fabric that is crimped and superimposed,
11: subchamber, 12: spacer, A: nonwoven fabric roll for blowing, B: nonwoven fabric roll for suction, C: object to be processed, C′: end face, C″: gap.

Claims (1)

[Scope of Claims] 1. A cylindrical shaft body having a hollow portion in the longitudinal direction of the shaft portion and a large number of through holes communicating with the hollow portion on the circumferential surface of the shaft portion; a pair of bearing parts provided at both ends of a shaft body and having at least one through hole that communicates with the cavity; a pump installed in the through hole of the bearing part via a hose; A large number of disc-shaped non-woven fabrics having an appropriate density are inserted into the shaft body, and the inserted non-woven fabrics are crimped and superimposed in the axial direction through press molding, and the crimped and superimposed non-woven fabrics and the pump are A nonwoven fabric roll configured in a crimped state and a fiber density state where the differential pressure between the inside and outside of the crimped and superimposed nonwoven fabric is maintained at 0.5 atm to 0.8 atm when fluids such as water and processing liquid are sucked into the shaft body through the axial body. and two side plates provided on both sides of the nonwoven fabric roll. A nonwoven fabric roll device for processing glass and plate materials.