KR102512246B1 - Method of rolling roller of roll press - Google Patents

Abstract

The present invention relates to a rolling roller of a roll press and a manufacturing method thereof, wherein a workpiece is processed to have uniform thickness, and assimilability is improved. The present invention provides a rolling roller of a roll press and a manufacturing method thereof, the rolling roller of a roll press comprising: a rotational axis installed side by side to face each other; a rolling roll provided at the center of the rotational axis and processing an input workpiece into a predetermined thickness through pressurization; and at least one bearing unit installed on both right and left ends of the rolling roll. The bearing unit includes: an inner wheel combined with the rotational axis; an outer wheel combined with the inner wheel and having a plurality of rollers accommodated and combined at constant intervals therebetween; and a housing having an assembly hole formed thereon to assemble the inner wheel, the roller and the outer wheel, wherein the outer circumference surface of the inner wheel is formed to be flat, and a retaining groove is formed on the inner circumference surface of the outer wheel to accommodate the roller.

Description

Rolling roller manufacturing method of roll press {METHOD OF ROLLING ROLLER OF ROLL PRESS}

The present invention relates to a rolling roller for a roll press and a method for manufacturing the same, and more particularly, to a rolling roller for a roll press and a method for manufacturing the same, in which the thickness of a workpiece is uniformly processed and the assembly property is improved.

Film members such as optical films, transparent electrode films, and barrier films used in electronic devices are thin films, and such thin film members have the thickness of the film members according to the high functionality and high precision of electronic devices. High precision is required.

Further, the film member has a multilayer structure in which a plurality of film materials are stacked.

That is, the film member is processed by a roll press that heats and presses the film material in a laminating manner with a pair of heated rolling rollers.

In addition, a positive electrode layer or a negative electrode layer provided in a lithium ion battery, or a membrane-electrode assembly (MEA) or gas diffusion layer used in a solid polymer fuel cell compresses a coated material to improve material density in order to obtain high power characteristics. Even in the step of making it, it is processed by the said roll press.

Figure 1 shows a configuration diagram showing the configuration of the main components of the rolling roller of the roll press according to the prior art.

And FIG. 2 is an exploded view of FIG. 1 shown to explain the coupling process of the bearing unit of FIG. 1 is shown.

Prior to the description, in FIGS. 1 and 2 and in FIGS. 3 to 5 to be described later, the inner and outer rings are cross-sectionally marked so that the inner and outer rings can be more clearly revealed.

Therefore, the cross-sections of FIGS. 1 to 5 are not drawn based on the drawing system.

1 and 2, the rolling roller 1 of the roll press according to the prior art is coupled to a rotating shaft 31 and the rotating shaft 31, and a workpiece (a film member, shown in FIG. 3 to be described later) Including a rolling roll 33 that presses the workpiece in order to process 'P') to a desired thickness, and a bearing unit 10 that allows the rotation shaft 31 coupled to the rotation shaft 31 to rotate smoothly It consists of

In addition, a pair of the rolling rolls 33 are provided (refer to 110 in FIG. 3 to be described later) so as to face each other and rotate in the roll press.

In addition, the bearing unit 10 includes an inner ring 11 coupled while contacting the rotating shaft 31, and a plurality of rollers 13 coupled to the retaining groove 11a formed on the outer circumferential surface of the inner ring 11, , It is configured to include an outer ring 15 supporting the roller 13 together with the inner ring 11, and a housing 17 accommodating the inner ring 11, the roller 13, and the outer ring 15.

The bearing unit 10 configured as described above is coupled to the rotating shaft 31 through the following process.

Referring back to FIG. 2 , first, a plurality of inner rings 11 having a plurality of retaining grooves 11a are manufactured in advance and inserted into the rotation shaft 31 .

Then, the roller 13 is inserted into the retaining groove 11a, and the housing to which the outer ring 15 is coupled is coupled.

However, the conventional bearing unit 10 configured and assembled as described above has a problem in that the diameter d of the plurality of retaining grooves 11a respectively formed on the plurality of inner rings 11 is not constant.

That is, the inner ring 11 applied to the rolling roller 1 of the roll press (the same applies to the inner ring configured in the present invention described later) is not a standard product (or a ready-made product), but is separately manufactured to fit the rotation shaft 31 It is very difficult to process the retaining grooves 11a of the inner ring 11, which are coupled in parallel to the rotating shaft 31, to have the same outer diameter d.

Due to this problem, the gap of the rolling rolls 33 (refer to 'G' in FIG. 3 to be described later) that rotates against each other and presses the workpiece to be processed to a desired thickness is not constant.

In other words, a deviation (or play) occurs in the coupling position of the roller 13 of the bearing unit 10, preventing smooth rotation of the rotating shaft 31, and eventually, the rolling roll 33 coupled to the rotating shaft 31 vibration occurs.

In addition, due to this problem, a gap of the pair of rolling rolls 33 is deviated, and eventually the thickness of the workpiece is not uniformly processed as a whole.

Moreover, since the retaining groove 11a is formed in the inner ring 11, as shown in FIG. 2, it is not easy to assemble or disassemble the outer ring 15.

In particular, since the size of the roll press or the rolling roller 1 applied to the roll press is very large, the vibration or clearance is very large, making it difficult to produce a workpiece with a uniform thickness.

On the other hand, as the first prior patent document related to the present invention described later, Japanese Patent Registration No. 4519732 (registered on May 28, 2010) discloses a metal foil resin film laminate manufacturing apparatus.

The above-described apparatus for manufacturing a metal foil resin film laminate of the first prior patent document includes an unwinding machine for supplying a resin film as a strip-shaped base film, an unwinding machine for supplying a strip-shaped metal foil, and heat-melting the resin film to the resin film. In the metal foil resin film laminate manufacturing apparatus comprising a roll press machine for heat-pressing the metal foil and a winder for winding and drawing a strip-shaped metal foil resin film laminate produced by heat-pressing a resin film and metal foil, the roll press machine, A pair of induction heating rolls that heat and press the object to be treated by dividing and arranging a plurality of induction heating coils in the longitudinal direction of the roll with a strip-shaped object to be processed interposed therebetween, and at both ends of the rotation shaft of the induction heating roll A first pressing means for applying pressure between the pair of induction heating rolls in an approaching direction, and a second pressing means for applying a bending force to the pair of induction heating rolls, Output of the separately arranged induction heating coil is controlled to form a concave crown in which the temperature of the central part in the longitudinal direction of the roll is slightly lowered, and the roll bending is controlled by the second pressing means so that the pair of induction heating rolls uniformly come into contact with the metal foil. to be

In addition, as a second prior patent document related to the present invention described later, Japanese Patent Registration No. 6025621 (registered on October 21, 2016) describes a method for measuring the shape of a roll used in a roll press facility and a roll shape measurement for a roll press facility A device is disclosed.

The method for measuring the shape of a roll used in a roll press facility in the above-described second prior patent document is a method for measuring the shape of a roll used in a roll press facility having a roll press machine body for compressing and processing a strip-shaped material, and the roll press machine It is a roll press equipment in which the main body arranges rolls up and down and applies a load in the vertical direction. It is characterized in that the amount of roll deformation is determined by dividing by deformation by.

The present invention was created to solve the above problems, and the rolling roller of the roll press and the manufacturing method thereof improve the structure and manufacturing method of the rolling roller so that the thickness of the workpiece is uniformly processed and the assembly property is improved. Its purpose is to provide

The rolling roller of the roll press of the present invention for achieving the above object,

A roll press including a rotating shaft facing each other and installed side by side, a rolling roll provided at the center of the rotating shaft to pressurize the input workpiece and processing it to a predetermined thickness, and at least one bearing unit installed at both left and right ends of the rolling roll. In the rolling roller,

The bearing unit,

an inner ring coupled to the rotating shaft;

an outer ring coupled to the inner ring and receiving and engaging a plurality of rollers at regular intervals therebetween;

Including; a housing in which assembly holes are formed so that the inner ring, the roller, and the outer ring can be assembled,

The outer circumferential surface of the inner ring is formed flat,

It is characterized in that a retaining groove for accommodating the roller is formed on the inner circumferential surface of the outer ring.

In the present invention, the inner ring is coupled to the rotating shaft through an interference fit.

In the present invention, at least one cooling passage is formed in the housing so that cooling fluid can be injected and flowed in order to reduce heat generation and heat conduction of the bearing unit, and the cooling passage is formed on the left and right sides of the assembly hole, respectively. desirable.

The rolling roller manufacturing method of the roll press of the present invention for achieving the above object is,

(a) processing a plurality of inner rings having flat outer circumferences and heating the inner rings to a predetermined temperature;

(b) closely fitting and coupling the plurality of inner rings in a heated state to the rotating shaft of the rolling roller of the roll press;

(c) when the plurality of inner rings are contracted and fixed to the rotation shaft, polishing the plurality of inner rings on the rotation shaft so that the outer diameters of the plurality of inner rings are uniform.

In the present invention, in the step (c), the inner ring is fixedly coupled to the rotating shaft through an interference fit.

In the present invention, after the step (c), an outer ring having a retaining groove for accommodating a plurality of rollers at regular intervals on an inner circumferential surface, and a step of coupling the housing to the inner ring; is further included.

In the present invention, the housing is formed with at least one cooling passage through which cooling fluid is injected and flowed in order to reduce heat generation and heat conduction, and the cooling passage is formed on the left and right sides of the assembly hole formed in the center of the housing, respectively. It is desirable to form

According to the embodiment of the present invention, the outer diameter of the inner ring of the bearing unit applied to the rolling roller of the roll press can be machined to a uniform size, so that the roller of the bearing unit can move smoothly between the inner ring and the outer ring without play.

Therefore, vibration is not generated in the rotating shaft of the rolling roller, so that the gap between the rolling rolls is constant, and a workpiece having a uniform thickness can be produced.

In addition, since the outer diameter of the inner ring is machined flat without forming a retaining groove, it is easy to assemble the outer ring.

In addition, since a cooling passage is formed in the housing of the bearing unit, it is possible to actively respond to heat generation and heat conduction problems of the bearing unit.

1 is a configuration diagram showing the configuration of the main components of a rolling roller of a roll press according to the prior art.
Figure 2 is an exploded view of Figure 1 shown to explain the coupling process of the bearing unit of Figure 1;
Figure 3 is a plan view showing the overall configuration of the rolling roller of the roll press according to the present invention.
Figure 4 is a configuration diagram showing the configuration of the main part of Figure 3;
Figure 5 is an exploded view of Figure 4;
Figure 6a is a perspective view of the bearing unit housing of Figure 3;
Figure 6b is a cross-sectional view shown by cutting along line AA in Figure 6a.
Figure 6c is a cross-sectional view shown by cutting along line BB in Figure 6a.
Figure 7 is a flow chart sequentially explaining the manufacturing method of the rolling roller of the roll press according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a plan view showing the overall configuration of the rolling roller of the roll press according to the present invention.

In addition, FIG. 4 shows a main part configuration diagram showing the main part configuration of FIG. 3, and FIG. 5 shows an exploded view of FIG. 4.

In addition, FIG. 6A is a perspective view of the bearing unit housing of FIG. 3, and FIGS. 6B and 6C are cross-sectional views taken along lines A-A and B-B in FIG. 6A, respectively.

Referring to FIGS. 3 to 6C, the rolling roller 100 of the roll press according to the present invention, as shown in FIG. Includes a rolling roll 110 that is provided and processed to a predetermined thickness by pressing the workpiece P, such as a film member, and at least one bearing unit 120 installed at both left and right ends of the rolling roll 110 It is composed by

And, as shown in FIGS. 4 and 5 , the bearing unit 120 includes an inner ring 121 coupled to the rotating shaft 101 and a plurality of inner rings 121 coupled to the inner ring 121 at regular intervals therebetween. It is configured to include an outer ring 125 accommodating and coupled to the roller 123, and a housing 127 in which an assembly hole 127a is formed so that the inner ring 121, the roller 123, and the outer ring 125 can be assembled. .

In addition, the outer circumferential surface of the inner ring 121 is formed flat, and a plurality of retaining grooves 125a accommodating the roller 123 are formed at regular intervals on the inner circumferential surface of the outer ring 125.

And the inner ring 121 is coupled to the rotating shaft 101 through an interference fit.

In addition, as shown in FIGS. 6A to 6C, the housing 127 has at least one cooling passage 127b through which cooling fluid is injected and flowed in order to reduce heat generation and heat conduction of the bearing unit 120. is formed

The cooling passages 127b are preferably formed on the left and right sides of the assembly hole 127a formed in the center of the housing 127 so that the cooling fluid has a cooling effect on the entire housing 127 .

On the other hand, as shown in FIG. 3, the rolling roller 100 of the roll press according to the present invention has been described by applying a roller bearing unit, and in addition to the roller bearing unit, a ball bearing or a tapered roller bearing is installed in the rotating shaft 101 It can be.

Among these bearing units, if the bearing unit of reference number 120 is a positive pressure bearing unit, the bearing unit of reference number 130 is a counter pressure bearing unit.

The manufacturing method of the rolling roller of the roll press according to the present invention having the above configuration will be described as follows.

7 is a flowchart sequentially illustrating a method of manufacturing a rolling roller of a roll press according to the present invention.

Referring to FIGS. 3 to 7, first, a plurality of inner rings 121 having flat outer circumferential surfaces are manufactured to be assembled to the rotary shaft 101, and the manufactured inner rings 121 are heat-processed at a predetermined temperature. (Step 210 )

Then, in a heated state, the plurality of inner rings 121 are closely fitted to the rotating shaft 101 of the rolling roller 100 of the roll press. (Step 220)

Then, when the plurality of inner rings 121 are contracted and fixed to the rotating shaft 101, polishing is performed on the rotating shaft 101 so that the outer diameters d1 of the plurality of inner rings 121 have a uniform size. (Step 230)

Meanwhile, the heating temperature of the inner ring 121 may vary depending on the size of the diameter of the rotating shaft 101.

The reason is that the shaft diameter of the rotating shaft 101 may vary depending on the type of film member processed by the rolling roller 100 of the roll press, and therefore, the inner diameter as well as the outer diameter d1 of the inner ring 121 may vary. because it can

That is, the inner ring 121 shrinks after being heated. This is because the heating temperature and the degree of shrinkage of the inner ring 121 depend on the size of the outer diameter d1 of the inner ring 121.

However, the heating temperature and degree of shrinkage of the inner ring 121 are determined by the size of the outer diameter d1 of the inner ring 121 and the thermal expansion coefficient (20 to 100 ℃) about 11.9㎛ / mK, melting point of about 1425 ℃ and thermal conductivity (25 ℃) about 46.5W / mK can be determined in consideration.

In this way, as the inner ring 121 expands and contracts by heating, the inner ring 121 can be easily coupled to the rotating shaft 101, and after shrinking, the inner ring 121 is tightly fitted to the rotating shaft 101. Can be custom combined.

Therefore, the inner ring 121 is precisely fixed to the rotating shaft 101 without play.

In addition, after step 130, a plurality of outer rings 125 having retaining grooves 125a for accommodating a plurality of rollers 123 at regular intervals on the inner circumferential surface,

The inner ring 121, the roller 123, and the outer ring 125 are assembled, and the housing 127 having the assembly hole 127a is coupled to the inner ring 121. (Step 240)

At this time, the housing 127 may be assembled separately from the outer ring 125.

And, as shown in FIGS. 6A to 6C , the housing 127 is formed with at least one cooling passage 127b through which cooling fluid is injected and flowed in order to reduce heat generation and heat conduction.

The cooling passages 127b are preferably formed on the left and right sides of the assembly hole 127a formed in the center of the housing 127 to improve cooling efficiency.

When the rolling roller 100 of the roll press according to the present invention manufactured by such a manufacturing method is applied, the outer diameter d1 of the inner ring 121 can be processed to a uniform size, so that the roller 123 Since it is seated in a uniform position, the roller 123 can move smoothly between the inner race 121 and the outer race 125.

Therefore, vibration does not occur in the rotary shaft 101, so that the rotary shaft 101 can rotate smoothly, and vibration does not occur in the rolling roll 110, and the gap between the rolling rolls 110 is always constant and uniform It becomes possible to process the workpiece P of one thickness.

However, conventionally, as shown in FIGS. 1 and 2, a plurality of retaining grooves are continuously formed on the inner ring 11, so that the outer diameter d of the inner ring 11 cannot be uniformly machined. A difference occurred in the dimension of the outer diameter (d1) of the inner ring (11).

Due to this problem, play occurs in the roller 13 between the inner ring 11 and the outer ring 15, and eventually, vibration is generated in the bearing unit 1 so that the pair of rolling rolls 33 installed facing each other The gap between them was not constant.

Accordingly, conventionally, it was not possible to process a workpiece with a uniform thickness.

In addition, in the case of the rolling roller 100 of the roll press according to the present invention, since the retaining groove 125a is not formed on the outer diameter d1 of the inner ring 121 and is processed flat, as shown in FIG. Likewise, assembly of the outer ring 125 is easy.

In addition, since cooling passages 127b are formed in the housing 127 of the bearing unit 120, especially on the left and right sides of the assembly hole 127a, it is possible to actively respond to heat generation and heat conduction problems of the bearing unit 120. As a result, the life of the rolling roll 110 can be extended, and continuous performance can be maintained.

As described above, the present invention has been described with reference to an embodiment shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent embodiments therefrom. will understand

Therefore, the true protection scope of the present invention should be defined only by the appended claims.

100. Rolling roller
101. Rotational axis
110. Rolling rolls
120. Bearing unit
121. Inner wheel
123. Roller
125. Paddle
125a. retaining home
127. Housing
127a. assembler
127b. cooling oil

Claims (9)

delete delete delete delete (a) processing a plurality of inner rings having flat outer circumferences and heating the inner rings to a predetermined temperature;
(b) closely fitting and coupling the plurality of inner rings in a heated state to the rotating shaft of the rolling roller of the roll press;
(c) polishing the inner rings fixed to the rotation shaft so that the outer diameters of the plurality of inner rings become uniform when the plurality of inner rings are contracted and fixed to the rotation shaft;
(d) combining an outer ring having a retaining groove formed on an inner circumferential surface for accommodating a plurality of rollers at regular intervals with an inner ring fixed to the rotation shaft; a method of manufacturing a rolling roller for a roll press comprising the. According to claim 5,
In the step (c), the rolling roller manufacturing method of the roll press, characterized in that the inner ring is fixedly coupled to the rotating shaft by an interference fit. delete According to claim 5,
The step (d) further includes coupling a housing having an assembly hole with the inner ring so that the inner ring, the roller, and the outer ring can be assembled,
The method of manufacturing a rolling roller of a roll press, characterized in that the housing is formed with at least one cooling passage through which cooling fluid is injected and flowed in order to reduce heat generation and heat conduction.
delete

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