KR102603048B1 - Pressing apparatus having variable pressing point - Google Patents

Abstract

The pressing device with a variable point of action includes a pressing roller, a main pressing unit, a pair of first extension parts, and a first pressing unit. The pressure roller extends in one direction, has an internal space formed therein, and includes a fixed shaft extending along the center. The main pressing unit directly applies the main pressing force to both ends of the pressing roller. Each of the pair of first extension parts includes a first extension bar connected to the fixed shaft and extending, a first exposed part connected to one end of the first extension bar and extending to be exposed to the outside of the pressure roller. , and a first action portion connected to the other end of the first extension bar, located in the inner space of the pressure roller, and contacting the inner peripheral surface of the pressure roller. The first pressing unit applies a first pressing force to the first exposed portion of each of the first extension parts.

Description

Pressing device having a variable operating point {PRESSING APPARATUS HAVING VARIABLE PRESSING POINT}

The present invention relates to a pressurizing device having a variable application point. More specifically, in a printing process using a roller, the pressurizing application point of the pressurizing roller that pressurizes the printing roller is varied to provide uniform pressure to the printing roller depending on the pressurizing state. It relates to a pressurizing device having a variable point of action capable of implementing pressurization.

In roll-to-roll printing equipment that performs a printing process, maintaining uniform pressure applied to the printing roller is very important to improve process efficiency and process quality.

Generally, as in Republic of Korea Patent No. 10-1175103, a separate pressure roller is provided to uniformly pressurize the printing roller, and the pressure roller applies pressure to the printing roller, thereby controlling the pressure of the printing roller. Control is carried out.

Meanwhile, in a printing process that requires printing a large area, the printing roller must be relatively long, so various technologies are being developed to apply an overall uniform pressing force to the relatively long printing roller. In particular, since it is relatively difficult to pressurize the central portion of the printing roller, many technologies have been developed to effectively pressurize the central portion.

For example, as in Republic of Korea Patent No. 10-2125829, there is a technology for providing additional pressure on the central part of the printing roller in addition to performing pressure on both sides of the printing roller by providing a plurality of pressure rollers. It is being developed.

However, in order to pressurize the central part of the pressure roller through an additional external pressure roller, an additional pressure roller must be installed, which complicates the design, reduces space utilization, and causes problems between the pressure rollers. There are problems such as having to perform alignment or speed synchronization.

Republic of Korea Patent No. 10-1175103 Republic of Korea Patent No. 10-2125829

Accordingly, the technical problem of the present invention was conceived from this point, and the purpose of the present invention is to form a plurality of action points capable of pressing the printing roller inside the pressure roller, and by varying the positions of the action points, to effectively apply pressure to the central portion. In addition to being able to perform pressurization, it is possible to perform pressurization at the optimal pressing position by considering the pressurization state of the printing roller in the printing process performed in real time, and space utilization, alignment, and speed control are relatively simple. The aim is to provide a pressurizing device having a variable point of action that can perform various operations.

A pressing device according to an embodiment for realizing the object of the present invention described above includes a pressing roller, a main pressing unit, a pair of first extension parts, and a first pressing unit. The pressure roller extends in one direction, has an internal space formed therein, and includes a fixed shaft extending along the center. The main pressing unit directly applies the main pressing force to both ends of the pressing roller. Each of the pair of first extension parts includes a first extension bar connected to the fixed shaft and extending, a first exposed part connected to one end of the first extension bar and extending to be exposed to the outside of the pressure roller. , and a first action portion connected to the other end of the first extension bar, located in the inner space of the pressure roller, and contacting the inner peripheral surface of the pressure roller. The first pressing unit applies a first pressing force to the first exposed portion of each of the first extension parts.

In one embodiment, the main pressing unit includes one main pressing unit that applies one main pressing force to one end of the outer surface of the pressing roller, and a second main pressing unit that applies the other main pressing force to the other end of the outer surface of the pressing roller. It may include a main pressurizing part.

In one embodiment, the pair of first extension parts may be moved independently of each other along the fixed axis.

In one embodiment, each of the first extension bars of the first extension parts may slide on the fixed axis.

In one embodiment, the first pressing unit includes a first pressing unit that applies a first pressing force to the first exposed portion of one of the first extension portions, and a first pressing portion that applies a first pressing force to the first exposed portion of one of the first extension portions. 1 It may include a first other side pressing part that applies the other side first pressing force to the exposed part.

In one embodiment, each of the first action portions of the first extension portions may rotate according to rotation of the pressure roller.

In one embodiment, each of the first extension parts includes a second extension bar connected to one or the other of the first extension bars, connected to one end of the second extension bar, and exposed to the outside of the pressure roller. A pair of second extension parts including a second exposed part extending as long as possible, and a second acting part connected to the other end of the second extension bar, located in the inner space of the pressure roller, and contacting the inner peripheral surface of the pressure roller. It may further include.

In one embodiment, the pair of second extension parts may be moved independently of each other along the first extension part.

In one embodiment, each of the second extension bars of the second extension parts may slide on the first extension part.

In one embodiment, the first action portion may be located closer to the center of the pressure roller than the second action portion.

In one embodiment, the first exposed portion may be exposed more to the outside of the pressing roller than the second exposed portion.

In one embodiment, it may further include a second pressing unit that applies a second pressing force to the exposed portions of each of the second extension parts.

In one embodiment, the device further includes a measuring unit that measures the pressing force applied from the pressing roller, and a plurality of measuring units are provided along the pressing roller to measure the pressing force at each position of the pressing roller.

In one embodiment, based on the result of measuring the pressing force of the measuring unit, the positions of the first acting parts or the second acting parts in the internal space of the pressing roller may be changed.

In one embodiment, the pressure roller may contact a printing roller that performs printing to provide a pressing force to the printing roller.

According to embodiments of the present invention, in addition to pressing both ends of the pressure roller, additional pressure is applied at any position including the center side of the pressure roller through first extension parts extending into the internal space of the pressure roller. By performing this, it is possible to compensate for the problem of insufficient pressing force, especially in the central part, and provide uniform pressing force throughout the pressing roller.

Furthermore, in addition to the first extension parts, additional second extension parts are provided to add action points that can perform pressure in the internal space of the pressure roller, thereby enabling pressure to be performed at more diverse action points, through which A more uniform pressing force can be provided.

In particular, by connecting additional extension parts in addition to the second extension parts, the uniformity of the pressing force can be further improved by increasing the number of application points as necessary.

In this case, the action parts that apply the pressing force in the internal space of the pressing roller rotate according to the rotation of the pressing roller, and thus can provide effective pressing force without restricting the operation of the pressing roller.

Furthermore, the first extension parts slide on the fixed axis to change their positions, and the second extension parts slide on the first extension bars of the first extension parts to change their positions, so it is very easy to change the positions of the action parts. It can be performed effectively.

In particular, by controlling the change in position of the action parts based on the results of measuring the pressing force provided from the pressing roller to the printing roller, it is possible to provide a more uniform pressing force from the entire pressing roller to the printing roller.

Figure 1 is a perspective view showing a pressurizing device according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing the internal structure of the pressurizing device of Figure 1.
FIG. 3 is an internal structural diagram showing the structures of the action portion and extension portion of the pressurizing device of FIG. 1.
Figure 4 is an internal structural diagram showing the structure of the action portion and extension portion of a pressurizing device according to another embodiment of the present invention.
FIGS. 5A and 5B are graphs explaining changes in the pressing force applied to the printing roller or the displacement of the printing roller when using the pressing device of FIG. 1 or FIG. 4.

Since the present invention can be subject to various changes and can have various forms, embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components. Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The above terms are used only for the purpose of distinguishing one component from another. The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “consist of” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings.

Figure 1 is a perspective view showing a pressurizing device according to an embodiment of the present invention. Figure 2 is a schematic diagram showing the internal structure of the pressurizing device of Figure 1. FIG. 3 is an internal structural diagram showing the structures of the action portion and extension portion of the pressurizing device of FIG. 1.

Referring to Figures 1 to 3, the pressing device 10 according to this embodiment includes a pressing roller 100, a main pressing unit 200, a pair of first extension parts 130 and 140, and a first pressing unit. Includes unit 300.

The pressing device 10 according to this embodiment is not shown in FIG. 1 for convenience of explanation, but as shown in FIG. 2, it applies pressure to the printing roller 20 that performs the printing process, (20) may be provided to further improve printing uniformity by providing uniform pressure during the printing process.

That is, the pressure roller 100, while in contact with the printing roller 20, provides the pressing force provided to the pressure roller 100, which will be described later, to the printing roller 20.

Meanwhile, the printing roller 20 is a roller that rotates around a central axis during the printing process, and the pressure roller 100 in contact with the printing roller 20 also rotates during the printing process. For example, if the printing roller 20 rotates clockwise in FIG. 2, the pressure roller 100 may rotate counterclockwise.

Specifically, the components of the pressurizing device 10 will be described.

The pressure roller 100 has an internal space 102 formed therein and has a cylindrical shape extending long in a first direction (X, see FIG. 3), and the inner diameter and extended length of the pressure roller 100 are The printing roller 20 can be designed to be changed in various ways by considering its inner diameter or extension length.

However, generally, the inner diameter of the pressure roller 100 may be smaller than the inner diameter of the printing roller 20.

Meanwhile, along the center of the pressure roller 100, a fixed shaft 101 extending in the same direction as the extension direction (X) of the pressure roller 100 is located.

That is, the fixed shaft 101 extends through the center of the pressure roller 100, and the inner diameter of the fixed shaft 101 must be relatively smaller than the inner diameter of the pressure roller 100.

In addition, the fixed shaft 101 is formed to be longer than the extension length of the pressure roller 100. Accordingly, as shown, the fixed shaft 101 is exposed to both ends of the pressure roller 100. and will be extended further.

The main pressing unit 200 applies main pressing force to the pressing roller 100 and includes a main pressing unit 210 on one side and a main pressing unit 220 on the other side.

Meanwhile, hereinafter, for convenience of explanation, the terms one side and the other side are used, but one side and the other side can be replaced with left and right, respectively.

The one side main pressing part 210 applies one side main pressing force (FL) to one end 110 of the pressing roller 100, and the other main pressing part 220 applies the one side main pressing force FL to the other end 110 of the pressing roller 100. Apply the other side main pressing force (FR) to (120).

In this case, the one end 110 and the other end 120 correspond to both ends of the pressure roller 100, respectively, and the one side main pressure part 210 is located on the outer peripheral surface of the pressure roller 100. To one end 110, the other main pressing part 220 applies pressing force to the other end 120 on the outer peripheral surface of the pressing roller 100.

That is, the one and the other main pressing parts 210 and 220 are in contact with the outer peripheral surface of the pressing roller 100 and provide a pressing force directly to the outer peripheral surface. As such, the one and other main pressing parts 210 , 220), the pressure roller 100 is pressed around both ends.

However, as the pressure roller 100 is pressed around both ends, the degree of pressure at the center of the pressure roller 100 becomes relatively low, and the first extension parts 130 and 140, which will be described later, and The first pressurizing unit 300 complements this.

As specifically shown in FIG. 3, the pair of first extension parts 130 and 140 includes a first one side extension part 130 and a first other side extension part 140.

The first one-side extension portion 130 extends from the left (one side) portion of the pressure roller 100, and includes the first one-side extension bar 132, the first one-side exposed portion 131, and the first one-side action portion. Includes (135).

That is, the first one-side extension bar 132 is connected to the fixed shaft 101, extends in the same direction (X) of the fixed shaft 101, and is located on the left side of the fixed shaft 101. It extends to a predetermined length. In this case, the extension length of the first one-side extension bar 132 may be approximately half of the total extension length of the pressure roller 100, but the length may be varied in various ways.

However, even when the first one-side extension 130, which will be described later, and the first other side extension 140, which will be described later, are in contact with each other, the exposed portions 131 and 141 will be exposed to the outside of the pressure roller 100. It must be extended to an appropriate length.

Meanwhile, the first one-side extension bar 132 may slide on the fixed shaft 101. That is, the fixed shaft 101 guides the sliding of the first one-side extension bar 132.

The first one-side exposed portion 131 is connected to one end of the first one-side extension bar 132 and must be exposed to the outside of one end of the pressure roller 100. Through this, the first one-side exposed portion 131 can be pressed by the first pressing unit 300, which will be described later.

In this case, the first one-side exposed portion 131 extends with an inner diameter equal to that of the first one-side extension bar 132, and is simply the pressure roller 100 of the first one-side extension bar 132. It corresponds to the part exposed to the outside of . That is, if the first one-side extension bar 132 slides on the fixed shaft 101 and the length exposed to the outside of the pressure roller 100 is variable, the length of the first one-side exposed portion 131 is also changed. It can be variable.

The first one-side action portion 135 is connected to the other end of the first one-side extension bar 132 and is located in the inner space 102 of the pressure roller 100.

The first one-side action portion 135 has a circular plate shape of a predetermined thickness and has an inner diameter larger than the inner diameter of the first one-side extension bar 132, and the outer peripheral surface of the first one-side action portion 135 is aligned with the pressure roller. It contacts the inner peripheral surface of (100).

Accordingly, as the first one-side extension bar 132 slides in one direction (X) along the fixed axis 101, the first one-side action portion 135 moves into the inner space ( On 102), it slides and moves along the inner peripheral surface of the pressure roller 100.

Meanwhile, although not shown, in order to smoothly slide along the inner peripheral surface of the pressure roller 100, a groove or a groove that engages with each other is formed on the inner peripheral surface of the pressure roller 100 and the outer peripheral surface of the first one-side action portion 135. Each protrusion is formed to play the role of a predetermined sliding guide.

In addition, the pressure roller 100 rotates while in contact with the printing roller 20, and the first one-side action portion 135 must also rotate along with the rotation of the pressure roller 100.

Accordingly, the first one-side action portion 135 rotates at the same speed as the rotation speed of the pressure roller 100. In this case, although not shown in detail, the first one-side action portion 135 rotates at the same speed as the rotation speed of the pressure roller 100. It can be coupled to the first one-side extension bar 132 so that it can rotate with respect to the extension bar 132.

In contrast, the first one-side action portion 135 and the first one-side extension bar 132 are formed integrally, so that the first one-side extension portion 130 as a whole rotates with the rotation of the pressure roller 100. You may.

As described above, the first one-side action portion 135 maintains a state in contact with the inner peripheral surface of the pressure roller 100. Through this, the first one-side action portion 135 of the pressure roller 100 A predetermined pressing force can be provided to the inner peripheral surface.

That is, as will be described later, the pressing force provided from the first pressing unit 300 is transmitted to the first one-side acting part 135, and ultimately the pressing roller 100 contacts the first one-side acting part 135. ) is transmitted to the inner circumferential surface of the

In this case, since the first one-side acting portion 135 is located in the central portion of the pressing roller 100, the pressing force ultimately acts on the central portion of the pressing roller 100.

Thus, the main pressing unit 200 provides pressing force to both ends of the pressing roller 100, and also provides pressing force to the central part of the pressing roller 100 by the first one-side action portion 135. Therefore, a relatively uniform pressing force is provided throughout the entire longitudinal direction in which the pressing roller 100 extends.

The first other side extension 140 is also substantially the same as the previously described first side extension 130 except that the extension positions face each other, that is, are symmetrical.

Specifically, the first other side extension 140 extends from the right (other side) portion of the pressure roller 100, and includes the first other side extension bar 142, the first other side exposed portion 141, and the first side extension bar 142. It includes the other side action portion 145.

That is, the first other extension bar 142 is connected to the fixed shaft 101, extends in the same direction (X) of the fixed shaft 101, and is located on the right side of the fixed shaft 101. It extends to a predetermined length. In this case, the extension length of the first other side extension bar 142 may be approximately half of the total extension length of the pressure roller 100, but the length may be varied in various ways.

Additionally, the length of the first other side extension bar 142 may be substantially the same as the length of the first one side extension bar 132.

In addition, even when the first other side extension part 140 is in contact with the above-described first one side extension part 130, the first other side exposed part 141 may be exposed to the outside of the pressure roller 100. It must be extended to an appropriate length.

The first other extension bar 142 slides on the fixed shaft 101, and the fixed shaft 101 guides the sliding of the first other extension bar 142.

The first other side exposed portion 141 is connected to one end of the first other side extension bar 142 and must be exposed to the outside of the other end of the pressure roller 100. Through this, the first other side exposed portion 141 can be pressed by the first pressing unit 300, which will be described later.

In this case, the first other side exposed portion 141 extends with an inner diameter equal to that of the first other side extension bar 142, and is simply the pressure roller 100 of the first other side extension bar 142. It corresponds to the part exposed to the outside of . That is, if the first other side extension bar 142 slides on the fixed shaft 101 and the length exposed to the outside of the pressure roller 100 is variable, the length of the first other side exposed portion 141 is also changed. It can be variable.

The first other side action portion 145 is connected to the other end of the first other side extension bar 142 and is located on the inner space 102 of the pressure roller 100.

The first other side action portion 145 has a circular plate shape of a predetermined thickness and has an inner diameter larger than the inner diameter of the first other side extension bar 142, and the outer peripheral surface of the first other side action portion 145 is aligned with the pressure roller. It contacts the inner peripheral surface of (100).

Therefore, as the first other side extension bar 142 slides in one direction (X) along the fixed axis 101, the first other side action portion 145 moves into the inner space ( On 102), it slides and moves along the inner peripheral surface of the pressure roller 100.

Meanwhile, in order to smoothly slide along the inner peripheral surface of the pressure roller 100, grooves or protrusions that engage each other are formed on the inner peripheral surface of the pressure roller 100 and the outer peripheral surface of the first other action portion 145, respectively. The fact that it can perform the role of a predetermined sliding guide is the same as in the first one-side operating portion 135 above.

In addition, the pressure roller 100 rotates while in contact with the printing roller 20, and the first other action portion 145 must also rotate along with the rotation of the pressure roller 100.

Accordingly, the first other side action portion 145 rotates at the same speed as the rotation speed of the pressure roller 100. In this case, although not shown in detail, the first other side action portion 145 rotates at the same speed as the rotation speed of the pressure roller 100. It can be coupled to the first other extension bar 142 so that it can rotate with respect to the extension bar 142.

In contrast, the first other side action portion 145 and the first other side extension bar 142 are formed integrally, so that the first other side extension portion 140 rotates as a whole with the rotation of the pressure roller 100. You may.

As described above, the first other side acting portion 145 maintains a state in contact with the inner peripheral surface of the pressure roller 100. Through this, the first other side acting portion 145 of the pressure roller 100 A predetermined pressing force can be provided to the inner peripheral surface.

That is, as will be described later, the pressing force provided from the first pressing unit 300 is transmitted to the first other acting part 145, and ultimately the pressing roller 100 contacts the first other acting part 145. ) is transmitted to the inner circumferential surface of the

In this case, since the first other side acting portion 145 is located in the central portion of the pressing roller 100, the pressing force ultimately acts on the central portion of the pressing roller 100.

Thus, the main pressing unit 200 provides pressing force to both ends of the pressing roller 100, and also provides pressing force to the central part of the pressing roller 100 by the first other side action portion 145. Therefore, a relatively uniform pressing force is provided throughout the longitudinal direction (X) in which the pressing roller 100 extends.

As described above, similar to the fact that the pressing force is applied to the left central part of the pressing roller 100 by the first one-side extension part 130 described above, the pressing roller is applied by the first other side extension part 140. A pressing force is applied to the right central part of (100).

In this case, the distance d1 at which the first extension parts 130 and 140 are spaced apart from each other can be varied in various ways, and through this, the pressing force is concentrated on the part that requires relatively pressing force in the central part of the pressing roller 100. It can provide pressing force.

In particular, the separation distance d1 may be '0', and in this case, the first one-side action portion 135 and the first other side action portion 145 are in contact with each other in the first direction (X). , a state in which concentrated pressing force is provided to the central part of the pressing roller 100.

The first pressing unit 300 provides a first one-side pressing unit 310 that provides a first one-side pressing force (F1L) to the first one-side extension part 130, and a first pressing unit 310 that provides a first one-side pressing force (F1L) to the first one-side extension part 130 and the first other side extension part 140. 1. It includes a first other side pressing part 320 that provides the other side pressing force (F1R).

That is, the first one-side pressing part 310 is applied to the first one-side exposed part 131 exposed to one side of the pressing roller 100 among the first one-side extension parts 130 in the first direction ( The first one-side pressing force (F1L) is applied in the second direction (Y) perpendicular to X).

By this first one-side pressing force F1L, the first one-side acting part 135 moves the pressing roller 100 in the second direction ( Y) is provided with a pressing force. At this time, the first one-side action portion 135 is located in the center portion of one side (left side) based on the center of the pressure roller 100, so the pressure roller 100 is positioned at a predetermined position on the left side of the center portion. Pressure force is provided.

In addition, the first other pressure part 320 is disposed on the first other side exposed part 141 exposed to the other side of the pressure roller 100 among the first other side extension parts 140 in the second direction ( Apply the first other side pressing force (F1R) to Y).

By this first other side pressing force F1R, the first other side action portion 145 moves the pressure roller 100 in the second direction ( Y) is provided with a pressing force. At this time, the first other side action portion 145 is located in the center portion of the other side (right side) based on the center of the pressure roller 100, so the pressure roller 100 is positioned at a predetermined position in the right portion of the center portion. Pressure force is provided.

Therefore, the pressure roller 100 is pressed from both sides by the main pressure parts 210 and 220 described above and from the central part by the first pressure parts 310 and 320, so that the pressure roller 100 is more uniform overall. A pressing force is provided.

Meanwhile, the one-side main pressing part 210 and the first one-side pressing part 310 include the configuration shown in FIG. 2. In this case, the one side main pressing part 210 and the first one side pressing part 310, except that the other side main pressing part 220 and the first other pressing part 320 are also different from each other. Substantially identical and overlapping descriptions are omitted.

That is, each of the pressing parts 210 and 310 includes a driving part 211 and 311, a damper part 212 and 312, and a measuring part 213 and 313.

Furthermore, the driving units 211 and 311, damper units 212 and 312, and measuring units 213 and 313 are covered by a separate cover unit 201 and may be provided inside.

The driving units 211 and 311 may be driving motors that generate a driving force in the second direction (Y) provided by the pressure roller 100, and the driving force generated in this way is generated by the damper units 212 and 312. It may be provided directly to one side of the pressure roller 100 or directly to the first exposed portion 131.

Meanwhile, in the case of the damper units 212 and 312, in addition to providing the driving force, they can absorb disturbances such as vibration generated in the process of providing the driving force.

That is, in the case of the driving roller 100, it rotates simultaneously with the rotation of the printing roller 20 and provides pressing force to the printing roller 20. In the actual printing process, various vibrations occur in the printing roller 20. This can be transmitted, and it can also be transmitted to the pressure roller 100. Accordingly, by absorbing disturbances such as various vibrations transmitted to the pressing roller 100 through the damper parts 212 and 312, the pressing force can be provided more accurately and stably.

The measuring parts 213 and 313 may be interposed between the damper parts 212 and 312 and the side of the pressure roller 100 or the first one-side exposed part 131, and the pressure roller 100 The pressing force provided by or the displacement of the pressing roller 100, or the pressing force between the pressing roller 100 and the printing roller 20 or the relative displacement of the pressing roller 100 and the printing roller 20, etc. Information can be obtained.

As described above, the measuring units 213 and 313 acquire information about the pressing force or the displacement, thereby obtaining information about areas where pressing force is insufficient or displacement is relatively uneven in the currently ongoing printing process. and based on this, information about the location where pressing force should be provided can be derived.

That is, based on the measurement results of the measuring units 213 and 313, information such as the position where the pressing force should be provided or the size of the pressing force can be obtained. Although not shown, the position or size can be determined through a separate control unit. It can provide a pressing force suitable for .

Meanwhile, through FIG. 2, the measuring units 213 and 313 are shown to be provided on specific pressing units 210 and 310. However, the measuring units 213 and 313 are provided on the pressing roller 100. It may be provided at uniform intervals in the entire direction extending in the first direction ( A plurality of them may be provided at intervals.

That is, as described above, the measuring unit or a separate measuring unit is provided throughout the pressing roller 100, so that the pressing force at specific positions of the pressing roller 100, the displacement of the pressing roller, and the printing roller Information such as the pressing force provided by (20) or the displacement between the pressing roller and the printing roller can be obtained. Furthermore, based on this information, information on the location where pressing force should be provided and the size of the pressing force can be obtained, and based on this, the control unit can provide the optimal amount of pressing force to the corresponding location.

Figure 4 is an internal structural diagram showing the structure of the action portion and extension portion of a pressurizing device according to another embodiment of the present invention.

In the pressurizing device 11 according to this embodiment, the pressurizing device 10 described with reference to FIGS. 1 to 3 except that second extension parts 150 and 160 and a second pressing unit are additionally provided. ), so the same reference numbers are used for the same components and overlapping descriptions are omitted.

Referring to FIG. 4, the pressing device 11 according to the present embodiment is a pair of second extension parts, and further includes a second one side extension part 150 and a second other side extension part 160, It further includes a second pressing unit (not shown) that pressurizes the pair of second extension parts 150 and 160.

In this case, excluding the second one-side and other-side extensions 150 and 160, the pressing roller 100, the main pressing unit 200, and the first one-side and other-side extensions included in the pressing device 11 ( 130, 140) and the first pressurizing unit 300 are the same as in FIGS. 1 to 3.

First, the second one-side extension 150 overlaps and extends the first one-side extension 130 at the left (one side) portion of the pressure roller 100, and includes a second one-side extension bar 152, It includes a second one-side exposed portion 151 and a second one-side action portion 155.

That is, the second one-side extension bar 152 is connected to the first one-side extension bar 132, extends in the same direction as the extension direction (X) of the first one-side extension bar 132, and is connected to the first one-side extension bar 132. Like the extension bar 132, it extends to a predetermined length from the left side of the fixed shaft 101.

In this case, the extension length of the second one-side extension bar 152 is formed to be smaller than the extension length of the first one-side extension bar 132. However, in the case of the second one-side extension bar 152, even when the second one-side action portion 155, which will be described later, is located in contact with the first one-side action portion 135, the pressure roller 100 It must be extended to a length sufficient to expose the second one-side exposed portion 151 to the outside.

Meanwhile, the second one-side extension bar 152 slides on the first one-side extension bar 132, and the first one-side extension bar 132 guides the sliding of the second one-side extension bar 152. do.

That is, the second one-side extension bar 152 extends to cover the outer diameter of the first one-side extension bar 132, and the inner diameter of the second one-side extension bar 152 is the first one-side extension bar 132. ) is formed to be substantially the same as the outer diameter of and can be slid.

The second one-side exposed portion 151 is connected to one end of the second one-side extension bar 152 and must be exposed to the outside of one end of the pressure roller 100. Through this, the second one-side exposed portion 151 can be pressed by the second pressing unit (not shown), which will be described later.

In this case, the second one-side exposed portion 151 has an inner diameter equal to that of the second one-side extension bar 152 and extends, and is simply the pressure roller 100 of the second one-side extension bar 152. It corresponds to the part exposed to the outside of . That is, if the second one-side extension bar 152 slides on the first one-side extension bar 132 and the length exposed to the outside of the pressure roller 100 is varied, the second one-side exposed portion 151 The length of can also be varied.

However, the exposed length of the second exposed portion 151 must be smaller than the exposed length of the first exposed portion 131. Thus, the first one-side pressing part 310 can provide pressing force to the first one-side exposed part 131.

The second one-side action portion 155 is connected to the other end of the second one-side extension bar 152 and is located in the inner space 102 of the pressure roller 100.

The second one-side action portion 155 has a circular plate shape of a predetermined thickness and has an inner diameter larger than the inner diameter of the second one-side extension bar 152, and the outer peripheral surface of the second one-side action portion 155 is aligned with the pressure roller. It contacts the inner peripheral surface of (100).

That is, the outer peripheral surface of the second one-side action portion 155 has a radius that is substantially the same as the outer peripheral surface of the first one-side action portion 135.

Therefore, as the second one-side extension bar 152 slides in one direction (X) along the first one-side extension bar 132, the second one-side action portion 155 of the pressure roller 100 On the internal space 102, the pressure roller 100 slides and moves along the inner peripheral surface.

Meanwhile, although not shown, in order to smoothly slide along the inner peripheral surface of the pressure roller 100, grooves or grooves that engage each other are formed on the inner peripheral surface of the pressure roller 100 and the outer peripheral surface of the second one-side action portion 155. Each protrusion is formed to play the role of a predetermined sliding guide.

In addition, the pressure roller 100 rotates while in contact with the printing roller 20, and the second one-side action portion 155 must also rotate along with the rotation of the pressure roller 100.

Therefore, the second one-side action portion 155 rotates at the same speed as the rotation speed of the pressure roller 100. In this case, although not shown in detail, the second one-side action portion 155 rotates at the same speed as the rotation speed of the pressure roller 100. It can be coupled to the second one-side extension bar 152 so that it can rotate with respect to the extension bar 152.

In contrast, the second one-side action portion 155 and the second one-side extension bar 152 are formed integrally, so that the second one-side extension portion 150 as a whole rotates with the rotation of the pressure roller 100. You may.

In this case, the rotation of the second one-side action portion 155 may be performed independently of the rotation of the first one-side action portion 135. Alternatively, the rotation may be performed identically and integrally with each other.

As described above, the second one-side action portion 155 maintains a state in contact with the inner peripheral surface of the pressure roller 100. Through this, the second one-side action portion 155 of the pressure roller 100 A predetermined pressing force can be provided to the inner peripheral surface.

That is, as will be described later, the pressing force provided from the second pressing unit is transmitted to the second one-side acting part 155, and ultimately the inner peripheral surface of the pressing roller 100 contacts the second one-side acting part 155. is passed on.

Furthermore, the second one-side operating portion 155 is located on one side (left side), that is, on the side facing the second one-side exposed portion 151, based on the position of the first one-side operating portion 135.

Therefore, the second one-side action portion 155 is located at an arbitrary position between one side (left) end of the pressure roller 100 and the first one-side action portion 135, so that the pressure roller 100 Pressure force is provided to the inner circumferential surface of .

Accordingly, through the second one-side action portion 155, additional pressing force can be provided to any position between one end of the pressing roller 100 and the central portion of one side (left side).

Therefore, a more uniform pressing force can be provided in the entire longitudinal direction extending with respect to the pressing roller 100 by the second one-side acting portion 155.

Meanwhile, the second other side extension part 160 is substantially the same as the second one side extension part 150, except that they are symmetrical to each other.

Specifically, the second other side extension 160 overlaps and extends the first other side extension 140 at the right (other side) portion of the pressure roller 100, and is the second other side extension bar 162. , it includes a second other side exposed portion 161 and a second other side action portion 165.

That is, the second other extension bar 162 is connected to the first other extension bar 142, extends in the same direction as the extension direction (X) of the first other extension bar 142, and is connected to the first other extension bar 142. Like the extension bar 142, it extends to a predetermined length from the right side of the fixed shaft 101.

In this case, the extension length of the second other extension bar 162 is formed to be smaller than the extension length of the first other extension bar 142. However, in the case of the second other side extension bar 162, even when the second other side action portion 165, which will be described later, is located in contact with the first other side action portion 145, the pressure roller 100 It must extend to a length sufficient to expose the second other exposed portion 161 to the outside.

Meanwhile, the second other extension bar 162 slides on the first other extension bar 142, and the first other extension bar 142 guides the sliding of the second other extension bar 162. do.

That is, the second other extension bar 162 extends to cover the outer diameter of the first other extension bar 142, and the inner diameter of the second other extension bar 162 is the first other extension bar 142. ) is formed to be substantially the same as the outer diameter of the and can be slid.

The second other side exposed portion 161 is connected to one end of the second other side extension bar 162 and must be exposed to the outside of the other end of the pressure roller 100. Through this, the second exposed portion 161 can be pressed by the second pressing unit (not shown), which will be described later.

In this case, the second other side exposed portion 161 extends with an inner diameter equal to that of the second other side extension bar 162, and is simply the pressure roller 100 of the second other side extension bar 162. It corresponds to the part exposed to the outside of . That is, if the second other side extension bar 162 slides on the first other side extension bar 142 and the length exposed to the outside of the pressure roller 100 is varied, the second other side exposed portion 161 The length of can also be varied.

However, the exposed length of the second other exposed part 161 must be smaller than the exposed length of the first other exposed part 141. Thus, the first other pressing part 320 can provide pressing force to the first other exposed part 141.

The second other side action portion 165 is connected to the other end of the second other side extension bar 162 and is located on the inner space 102 of the pressure roller 100.

The second other side action portion 165 has a circular plate shape of a predetermined thickness and has an inner diameter larger than the inner diameter of the second other side extension bar 162, and the outer peripheral surface of the second other side action portion 165 is aligned with the pressure roller. It contacts the inner peripheral surface of (100).

That is, the outer peripheral surface of the second other action portion 165 has a radius substantially the same as the outer peripheral surface of the first other action portion 145.

Therefore, as the second other side extension bar 162 slides in one direction (X) along the first other side extension bar 142, the second other side action portion 165 of the pressure roller 100 On the internal space 102, the pressure roller 100 slides and moves along the inner peripheral surface.

Meanwhile, although not shown, in order to smoothly slide along the inner peripheral surface of the pressure roller 100, grooves or grooves that engage each other are formed on the inner peripheral surface of the pressure roller 100 and the outer peripheral surface of the second other side action portion 165. Each protrusion is formed to play the role of a predetermined sliding guide.

In addition, the pressure roller 100 rotates while in contact with the printing roller 20, and the second other action portion 165 must also rotate along with the rotation of the pressure roller 100.

Therefore, the second other side acting portion 165 rotates at the same speed as the rotation speed of the pressure roller 100. In this case, although not shown in detail, the second other side acting portion 165 rotates at the same speed as the rotating speed of the pressing roller 100. It may be coupled to the second other extension bar 162 so that it can rotate with respect to the extension bar 162.

In contrast, the second other side action portion 165 and the second other side extension bar 162 are formed integrally, so that the second other side extension portion 160 rotates as a whole with the rotation of the pressure roller 100. You may.

In this case, the rotation of the second other acting part 165 may be performed independently of the rotation of the first other acting part 145, or alternatively, they may be performed identically and integrally with each other.

As described above, the second other side action portion 165 maintains a state in contact with the inner peripheral surface of the pressure roller 100. Through this, the second other side action portion 165 of the pressure roller 100 A predetermined pressing force can be provided to the inner peripheral surface.

That is, as will be described later, the pressing force provided from the second pressing unit is transmitted to the second other acting part 165, and ultimately the inner peripheral surface of the pressing roller 100 contacts the second other acting part 165. is passed on.

Furthermore, the second other side operating portion 165 is located on the other side (right side), that is, on the side facing the second other exposed portion 161, based on the position of the first other side operating portion 145.

Therefore, the second other side acting portion 165 is located at an arbitrary position between the other (right) end of the pressing roller 100 and the first other acting portion 145, so that the pressing roller 100 Pressure force is provided to the inner circumferential surface of .

Accordingly, through the second other side acting portion 165, additional pressing force can be provided to any position between the other end and the other (right) center portion of the pressing roller 100.

Therefore, a more uniform pressing force can be provided in the entire longitudinal direction extending with respect to the pressing roller 100 by the second other side acting portion 165.

As described above, similarly to the case where the pressing force is applied to an arbitrary position on the left side of the pressure roller 100 by the second one-side extension part 150 described above, the second other side extension part 160 A pressing force is applied to a random location on the right side of the pressing roller 100.

In this case, the distance d2 at which the second extension parts 150 and 160 are spaced apart from each other can be varied in various ways, and through this, the pressing force is concentrated on the part that requires relatively pressing force in the central part of the pressing roller 100. It can provide pressing force.

However, the separation distance d2 is the distance d1 between the first extension parts 130 and 140 and the thickness of the first one side and the other side acting parts 135 and 145 in the first direction (X). It is obvious that it should be maintained as greater than the sum.

Meanwhile, as described above, the pair of second extension parts 150 and 160 overlap with the pair of first extension parts 130 and 140 on the inner space 102 of the pressure roller 100. Although not shown, a pair of third extension parts are located to extend and overlap the pair of second extension parts, similar to providing additional pressing force to the pressure roller 100. , additional pressing force can be provided to another location on the pressing roller 100.

Furthermore, a pair of fourth extension portions, fifth extension portions, or more extension portions may be provided, and through this, action portions capable of providing a more dense pressing force may be provided on the pressing roller 100. there is.

The second pressing unit, although not shown in the drawings, may be additionally provided between the first pressing unit (300) and the main subscription unit (200) in FIG. 1.

That is, the second pressing unit includes a second one-side pressing unit that provides a second one-side pressing force (F2L) to the second one-side extension part 150, and a second other pressing force (F2L) to the second other-side extension part 160. It may include a second other side pressing portion that provides (F2R).

Thus, the second one side pressing part may be located between the first one side pressing part 310 and the one side main pressing part 210, and similarly, the second other pressing part may be located between the first one side pressing part 320. ) and the other main pressing part 220.

Thus, the second one-side pressing part is applied to the second one-side exposed part 151 of the second one-side extension part 150, which is exposed to one side of the pressing roller 100, in the second direction (Y). 2 Apply pressure (F2L) to one side.

By this second one-side pressing force F2L, the second one-side acting part 155 moves the pressing roller 100 in the second direction ( Y) is provided with a pressing force. At this time, the position where the pressing force is applied by the second one-side action portion 155 is the same as previously described.

In addition, the second other pressure part is applied to the second other side exposed part 161 of the second other side extension part 160, which is exposed to the other side of the pressure roller 100, in the second direction (Y). 2 Apply pressure (F2R) to the other side.

By this second other side pressing force (F2R), the second other side action portion 165 moves the pressure roller 100 in the second direction ( Y) is provided with a pressing force. At this time, the position where the pressing force is applied by the second other side action portion 165 is also the same as previously described.

Furthermore, if additional extension parts are provided in addition to the pair of second extension parts 150 and 160, it is obvious that an additional pressing unit must be provided to provide pressing force to the additional extension parts. Since the arrangement position, etc. can be clearly derived from the second pressurizing unit described above, redundant description will be omitted.

FIGS. 5A and 5B are graphs explaining changes in the pressing force applied to the printing roller or the displacement of the printing roller when using the pressing device of FIG. 1 or FIG. 4.

That is, as shown in FIG. 5A, when only the main pressing unit 200 is provided and pressing force is applied only to both ends of the pressing roller 100, the pressure is applied to the printing roller 20 through the pressing roller 100. The applied pressing force is concentrated only at both ends, and accordingly, the displacement of the printing roller 20 occurs mainly only at both ends, resulting in an overall uneven pressing force or displacement.

On the other hand, when pressing is performed by providing a plurality of extension parts and pressing units as in the present embodiment, both ends of the pressing roller 100 as well as the extension of the pressing roller 100, as shown in FIG. 5B Since pressing force can be provided at regular intervals in the entire direction, the pressing force applied to the printing roller 20 can be provided more uniformly in the entire extending direction, and accordingly, the displacement of the printing roller 20 can also be more uniform. can be induced.

Of course, in the case of Figure 5b, the pressing force or displacement is when the positions of the acting parts of the extension parts are maintained at the same interval, and the pressing force or displacement can be varied in various ways by varying the positions of the acting parts.

In particular, as described above, information on the real-time pressing force state or displacement state of the pressing roller or printing roller is obtained through the measuring unit, and based on this, information on the position and size of the pressing force that needs to be supplemented is derived, If the pressing force is applied while changing the position, the pressing force applied to the printing roller through the pressing roller can be maintained more uniformly, and through this, a more uniform and precise printing process can be performed.

According to the embodiments of the present invention as described above, in addition to pressing both ends of the pressure roller, the pressure is applied at any position including the center side of the pressure roller through the first extension parts extending into the internal space of the pressure roller. By performing additional pressing, it is possible to compensate for the problem of insufficient pressing force, especially in the central part, and provide uniform pressing force throughout the pressing roller.

Furthermore, in addition to the first extension parts, additional second extension parts are provided to add action points that can perform pressure in the internal space of the pressure roller, thereby enabling pressure to be performed at more diverse action points, through which A more uniform pressing force can be provided.

In particular, by connecting additional extension parts in addition to the second extension parts, the uniformity of the pressing force can be further improved by increasing the number of application points as necessary.

In this case, the action parts that apply the pressing force in the internal space of the pressing roller rotate according to the rotation of the pressing roller, and thus can provide effective pressing force without restricting the operation of the pressing roller.

Furthermore, the first extension parts slide on the fixed axis to change their positions, and the second extension parts slide on the first extension bars of the first extension parts to change their positions, so it is very easy to change the positions of the action parts. It can be performed effectively.

In particular, by controlling the change in position of the action parts based on the results of measuring the pressing force provided from the pressing roller to the printing roller, it is possible to provide a more uniform pressing force from the entire pressing roller to the printing roller.

Although the present invention has been described above with reference to preferred embodiments, those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the following patent claims. You will understand that it is possible.

10: Pressure device 100: Pressure roller
101: fixed shaft 130: first one side extension
140: first other side extension 150: second one side extension
160: second other side extension 200: main pressurizing unit
210: main pressing part on one side 220: main pressing part on the other side
300: first pressurizing unit 310: first one-side pressurizing unit
320: First other side pressing part

Claims (15)

A pressure roller extending in one direction, having an internal space formed therein, and including a fixed shaft extending along the center;
a main pressing unit that directly applies main pressing force to both ends of the pressing roller;
Each of them includes a first extension bar connected to and extending from the fixed shaft, a first exposed portion connected to one end of the first extension bar and extending to be exposed to the outside of the pressure roller, and the other side of the first extension bar. a pair of first extension parts connected to an end, located in an inner space of the pressure roller, and including a first action part in contact with an inner peripheral surface of the pressure roller;
a first pressing unit that applies a first pressing force to the first exposed portion of each of the first extension portions; and
Each of the first extension parts includes a second extension bar connected to one or the other of the first extension bars, a second extension bar connected to one end of the second extension bar and extending to be exposed to the outside of the pressure roller. A pressing device comprising a pair of second extension parts including an exposed portion and a second acting part connected to the other end of the second extension bar, located in an inner space of the pressing roller, and contacting an inner peripheral surface of the pressing roller. . The method of claim 1, wherein the main pressurizing unit,
One main pressing part that applies one main pressing force to one end of the outer surface of the pressing roller; and
A pressing device comprising a main pressing unit that applies the other main pressing force to the other end of the outer surface of the pressing roller. The method of claim 1, wherein the pair of first extension portions,
A pressurizing device, characterized in that it moves independently of each other along the fixed axis. The method of claim 3, wherein each of the first extension bars of the first extension parts is:
A pressurizing device, characterized in that it slides on the fixed axis. The method of claim 2, wherein the first pressurizing unit,
a first one-side pressing portion that applies a first one-side pressing force to the first exposed portion of any one of the first extension portions; and
A pressing device comprising a first pressing part that applies a first pressing force to a first exposed part of another one of the first extension parts. The method of claim 1, wherein each of the first action portions of the first extension portions is:
A pressurizing device characterized in that it rotates according to the rotation of the pressurizing roller. delete The method of claim 1, wherein the pair of second extension portions,
A pressing device, characterized in that the second extension parts move independently of each other along the first extension part. The method of claim 8, wherein each of the second extension bars of the second extension parts is:
A pressing device, characterized in that it slides on the first extension part. According to paragraph 1,
A pressing device, characterized in that the first action portion is located closer to the center of the pressure roller than the second action portion. According to paragraph 1,
A pressing device, characterized in that the first exposed portion is exposed further to the outside of the pressing roller than the second exposed portion. According to paragraph 1,
A pressing device further comprising a second pressing unit that applies a second pressing force to the exposed portions of each of the second extension parts. According to paragraph 1,
It further includes a measuring unit that measures the pressing force applied from the pressing roller,
A pressurizing device, wherein a plurality of measuring units are provided along the pressurizing roller to measure the pressing force at each position of the pressurizing roller. According to clause 13,
Based on the results of the pressure measurement of the measuring part,
A pressing device, characterized in that the positions of the first acting parts or the second acting parts in the internal space of the pressing roller are variable. The method according to any one of claims 1 to 6 and 8 to 14, wherein the pressure roller is:
A pressing device that contacts a printing roller that performs printing and provides pressing force to the printing roller.

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