WO2022015054A1

WO2022015054A1 - Variable roller structure

Info

Publication number: WO2022015054A1
Application number: PCT/KR2021/009056
Authority: WO
Inventors: 이명균; 노은석; 구의서; 남한우
Original assignee: 스템코(주); 주식회사 한빛테크놀로지
Priority date: 2020-07-15
Filing date: 2021-07-14
Publication date: 2022-01-20
Also published as: TW202220510A; KR20220009230A

Abstract

Disclosed is a variable roller structure. A variable roller structure according to an exemplary embodiment of the present invention comprises: a first body (10) and a second body (20) which have a cylindrical shape; a first stepped part (50) installed between the first body (10) and the second body (30); and a first movable member (85) installed in contact with the first stepped part (50), wherein the diameter of the first stepped part (50) can be varied by the rotation of the first movable member (85).

Description

Variable roller structure

The present invention relates to a deformable roller structure, and more particularly, to a variable roller structure capable of variously changing the configuration of a step portion supporting a portion of a film substrate.

Flexible circuit boards are mainly manufactured by the Roll to Roll method, in which a film-type substrate is transferred by the rotation of a roller. In order to prevent the film-type substrate from damaging the circuit wiring or the surface due to contact with the roller, the film-type substrate is separated from the surface of the roller by forming a step in the area corresponding to both ends of the substrate in the width direction among the outer circumferential surfaces of the roller. It was transported in a state spaced apart by a predetermined height. In addition, as shown in FIG. 1 , the film-type substrate may include a plurality of flexible printed circuit boards in the width direction, where the region between the plurality of flexible circuit boards is supported through a separate step portion so that the film-type substrate is moved in the direction of gravity. to prevent bending.

However, according to the prior art, in the case of transferring different film-type substrates having different numbers in the width direction, for example, as shown in FIG. 1, a film-type substrate on which two flexible printed circuit boards are formed (hereinafter referred to as 'two sets'). ) to a film-type substrate on which three flexible printed circuit boards are formed (hereinafter referred to as 'three sets') as shown in FIG. Since the positions are also different from each other, it is necessary to replace and apply a roller having a corresponding stepped portion each time. This has disadvantages in that it causes problems of lowering productivity, such as roller replacement time and center correction work.

Accordingly, there is a need to develop a roller structure capable of transporting a film-type material having a different number of flexible printed circuit boards in the width direction without replacing the rollers.

One embodiment of the present invention is to provide a variable roller structure that can change the outer diameter of the step portion supporting the film substrate as needed.

An embodiment of the present invention is to provide a variable roller structure capable of transferring a film substrate transferred in multiple groups without replacing the rollers.

According to one aspect of the present invention, the cylindrical first body 10 and the second body 30; a first step portion (50) installed between the first body (10) and the second body (30); and a first movable member (85) installed in contact with the first step portion (50), wherein the first step portion (50) is a variable type whose diameter is changed by rotational movement of the first movable member (85). A roller structure is provided.

At this time, each of the first body and the second body, a cylindrical portion; and

first side portions

15 and 35 formed with a predetermined width on one side of the cylindrical portion in the direction of the end of the rotation shaft, wherein the first side protrudes from the outer peripheral surface of the cylindrical portion to form a step, and the first The body and the second body may be installed to face each other.

In this case, the first body and the second body further include

second side portions

16 and 36 in the direction of the first side, respectively, and the outer circumferential surface of the second side is the same as or expanded compared to the outer circumferential surface of the first side It can be formed in diameter.

At this time, the first step portion 50 includes one or more first movable members 52, and the inner surface of the first movable member 52 is in contact with the outer peripheral surface of the first movable member 85, When the inner surface of the first movable member 52 comes into contact with the first protrusion 84a protruding from the outer circumferential surface of the first movable member 85 , the first movable member 52 moves to the center of the rotation shaft 90 . The diameter of the first step portion 50 may be expanded while being driven outwardly from the .

In this case, the first protrusion 84a of the first movable member 52 and the first movable member 85 is formed in a one-to-one to many-to-one correspondence, and the first movable member 52 or the first protrusion 84a ), the adjacent first moving member 52 or the first protrusion 84a may be formed to be spaced apart from each other by a predetermined distance.

At this time, two or more n-th step portions including one or more n-th moving members are included between the first body 10 and the second body 30 , and one or more spacing maintaining portions between adjacent n-th step portions are included. (40) can be formed.

In this case, n-th movable members may be formed to correspond to the n-th step portion.

In this case, the first moving member 52 further includes one or more support members 59 , and the support member 59 includes at least one of a body, an n-th step portion or a gap maintaining portion 40 and the The first moving member 52 may be bound.

In this case, the n-th movable member may be formed to cross each other with an n+1-th or n-1-th movable member and an n-th protrusion adjacent to each other.

In this case, it may further include a hub body 80 coupled to the

second side portions

16 and 36, and an outer circumferential surface of the hub body 80 may be formed to be in contact with an inner circumferential surface of the body or the movable member.

In this case, the first body 10 and the second body 30 and further comprising a rotation shaft (90) coupled to, the first movable member (85) is the rotation shaft (90) and the first step portion (50) ) can be installed between

In this case, the first body 10 and the second body 30 may include rotation

shaft coupling portions

14 and 34 formed in the direction of the cylindrical portion from one surface of the second side portion.

At this time, the first body and the second body installed outside the second side of at least one of the second body, formed rotatably about the rotation axis may further include a step adjustment member for rotating the movable member. .

At this time, further comprising a step adjustment member 20 for controlling the rotational movement of the first movable member 85, the step adjustment member 20 is installed at least one one-to-one with respect to the first to n-th movable member Alternatively, it can be a many-to-one correspondence.

The deformable roller structure according to an embodiment of the present invention rotates a movable member having a first protrusion formed on an outer circumferential surface thereof, whereby a corresponding first step portion is moved radially outward or radially inward of the rotation shaft, thereby forming a film substrate and It is possible to selectively form a contacting step portion.

The variable roller structure according to an embodiment of the present invention additionally introduces a plurality of protrusions and a plurality of steps corresponding thereto in addition to the first protrusion and the first stepped portion, and they are driven in cooperation with each other so that the rollers are transferred in multiple groups. It can be transported efficiently without replacement.

1 and 2 are perspective views illustrating that the variable roller structure according to an embodiment of the present invention transports a film substrate having two sets and three sets of flexible printed circuit boards, respectively.

3 is an exploded perspective view illustrating a deformable roller structure according to an embodiment of the present invention.

4 and 5 are views viewed in a direction perpendicular to the extension direction of the rotating shaft of the variable roller structure according to an embodiment of the present invention.

6 is a perspective view showing a step portion and a part of the movable member separated from the variable roller structure according to an embodiment of the present invention.

7 and 8 are views for explaining the movement of the step portion of the variable roller structure according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In this specification, "diameter" may mean the length of a line segment connecting two points on the outer peripheral surface of the circular cross-section in a straight line passing through the center of the circular cross-section in any circular cross-section perpendicular to the longitudinal direction of the deformable roller structure. Also, “radius” may mean the length of a line segment connecting the center of the circular cross-section and any one point on the outer circumferential surface of the circular cross-section.

1 and 2 are perspective views illustrating that the variable roller structure according to an embodiment of the present invention transports a film substrate having two sets and three sets of flexible printed circuit boards, respectively. 3 is an exploded perspective view illustrating a deformable roller structure according to an embodiment of the present invention. 4 and 5 are views viewed in a direction perpendicular to the extension direction of the rotating shaft of the variable roller structure according to an embodiment of the present invention.

The variable roller structure 1 according to an embodiment of the present invention is a device rotatable about a rotation shaft 90, and supports a portion of the lower surface of a substrate (hereinafter, referred to as a film substrate) formed in a film shape as shown in FIG. 1 . It is a device for transferring the film substrate in one direction while doing so. In this case, the film substrate has a certain width and thickness, is formed to extend in one direction, and is composed of a polymer resin or a metal component. In addition, the flexible printed circuit board may be transferred by the deformable roller structure 1 according to the present invention in a state before or before being formed on the front and back surfaces of the film substrate.

In more detail, the deformable roller structure 1 according to an embodiment of the present invention is a cylindrical roller structure, at this time including the first body 10 and the second body 30 individually forming a cylindrical shape. It is also possible to form a cylindrical shape as a whole. As described above, the variable roller structure 1 having a cylindrical shape rotates about the rotation shaft 90 and at the same time supports and transports the film substrate. At this time, in order to minimize the contact area between the deformable roller structure and the film substrate, the body At least one step portion having a predetermined width is required, such as the first step portion 50, on a part of the outer circumferential surface. In this case, the step portion may be formed in a region that does not overlap the circuit region formed on the front and back surfaces of the film substrate to prevent damage to the circuit during transport.

On the other hand, the deformable roller structure 1 according to an embodiment of the present invention includes a variable number of flexible circuit boards in the width direction, for example, two or three sets of flexible circuit boards or before the flexible circuit board is formed. It can be aimed at conveying the film base material of a state. In this case, the flexible printed circuit boards of each group constituting the multiple sets may be formed to have the same width or different widths.

However, if one or more step portions including the first step portion 50 are fixed to be immutable, for example, as illustrated in FIG. 1 in a film substrate including two sets of flexible printed circuit boards As described above, whenever the transfer target is changed to a film substrate including three sets of flexible circuit boards, that is, the area in which the circuit of the film substrate is formed or the size of the flexible circuit board is different, so the roller structure is also formed with a corresponding step portion. It is inconvenient to have to replace them together.

The deformable roller structure 1 according to an embodiment of the present invention has been devised to solve this problem, and in cooperation with the movable member 85 insertable into the

body

10 and 30 adjacent to the rotation shaft 90 and this By introducing one or more stepped portions to be driven, it is possible to extend the stepped portion radially outwardly of the rotation shaft 90 or to return to the inner side.

Specifically, referring to FIG. 3 , the variable roller structure 1 according to an embodiment of the present invention includes a rotation shaft 90 , a first body 10 , a second body 30 , and a first step portion 50 . and a first movable member 85 .

In an embodiment of the present invention, the rotation shaft 90 is a member of a cylindrical shape extending in one direction, and is directly or indirectly coupled to the first body 10 and the second body 30 to be described later to the first body ( 10) and the second body 30 may be supported.

In one embodiment of the present invention, at least a part of the rotation shaft 90 may be connected to a driving means such as a motor. That is, by rotating the rotating shaft 90 by the motor, the entire variable roller structure 1 according to an embodiment of the present invention can be rotated. The rotational force generated here may also be transmitted to the film substrate to move the film substrate in one direction.

Alternatively, in one embodiment of the present invention, the rotation shaft 90 may be formed to be passively rotated according to the movement of the film substrate without being connected to a driving means such as a motor. That is, the deformable roller structure 1 according to an embodiment of the present invention supports the lower surface of the film substrate, and at this time, it may be rotated about the rotation shaft 90 by the friction force formed by contact with the film substrate.

A deformable roller structure 1 according to an embodiment of the present invention includes a first body 10 and a second body 30 . At this time, the first body 10 and the second body 30 may function as a volume member constituting a part of the cylindrical deformable roller structure 1, and a first side portion ( 15 , 35 ) or the

second side

16 , 36 may support the film substrate.

In one embodiment of the present invention, the first body 10 and the second body 30 have a cylindrical configuration disposed at one end of the deformable roller structure 1 with respect to the longitudinal direction of the rotation shaft 90, at this time , The first body 10 and the second body 30 may be disposed to face each other based on a first step portion 50 to be described later as shown in FIG. 5 .

In addition, the first body 10 and the second body 30 may be coupled to each other with the rotation shaft 90 by forming a space through which the rotation shaft 90 can pass therein. That is, the rotating shaft 90 may enter one of the first body 10 and the second body 30 and pass through the other to advance to the outside.

However, in an embodiment of the present invention, the first body 10 and the second body 30 are different from each other in the position where they are disposed, and the structure and function may be the same or similar. Therefore, in the following description, the first body 10 will be mainly described in order to avoid repeated description, but technology related to the second body 30 will be added only if necessary. In this regard, reference numerals for portions of the second body 30 corresponding to the first body 10 are written together when the reference numerals of the first body 10 are described.

More specifically, referring to Figures 3 to 5, the first body 10 is a cylindrical portion (11, 31), the first side (15, 35), the second side (16, 36) and the rotating shaft coupling portion ( 14, 34) may be included.

First, the cylindrical portion 11 is a portion constituting the outer circumferential surface of the first body 10 formed in a cylindrical shape, and at the same time may constitute a part of the outer circumferential surface of the deformable roller structure 1 formed in the cylindrical shape.

Next, referring again to FIG. 4 , the first body 10 includes

first side portions

15 and 35 formed with a predetermined width on one side of the cylindrical portion 11 in the direction of the end of the rotation shaft 90 . can do.

At this time, the

first side portions

15 and 35 may protrude to a predetermined height from the outer peripheral surface of the cylindrical portion 11 to form a step. The

first side portions

15 and 35 are configured to support both sides of the film substrate in the width direction when the film substrate is positioned and moved between the first body 10 and the second body 30, respectively. Through this, the film substrate is supported not by the entire area corresponding to the first body 10 and the second body 30, but only by a partial area in contact with the

first side portions

15 and 35, so that the deformable roller structure (1) It is possible to minimize damage to the appearance of the flexible circuit board (circuit wiring, protective layer, etc.) or the back of the film substrate due to friction with the

In an embodiment of the present invention, the first body 10 and the second body 30 may include

second side portions

16 and 36 in the direction of the

first side portions

15 and 35, respectively. In this case, the

second side portions

16 and 36 may be disk-shaped members formed at both ends in the longitudinal direction of the deformable roller structure 1 according to an embodiment of the present invention.

At this time, referring to FIG. 3 , the

second side portions

16 and 36 are shown to be formed separately from the

first side portions

15 and 35 or the

cylindrical portions

11 and 31, but the

second side portions

16 and 36 Note that it may be formed integrally with the

first side portions

15 and 35 or the

cylindrical portions

11 and 31 .

In addition, the

second side portions

16 and 36 are formed adjacent to the

first side portions

15 and 35 , and may be formed to have an expanded diameter compared to the outer peripheral surfaces of the

first side portions

15 and 35 . That is, when the outer peripheral surface of the cylindrical portion 11 is taken as a reference, the

second side portions

16 and 36 may be formed higher than the

first side portions

15 and 35 . This is because the

second side

16 , 36 is a member for restricting the film substrate from moving to the left or right to leave the flow section when the film substrate is positioned on the

first side

15 , 35 and moved. to be.

As another example, the

first side portions

15 and 35 and the

second side portions

16 and 36 are formed with the same outer diameter to expand the area in contact with the film substrate, thereby improving the supporting force during transport.

Meanwhile, in one embodiment of the present invention, one or more holes may be formed in the second side portion 16 of the first body 10 . Through this, the step adjustment member 20 and the first movable member 85 or the hub body 80, which will be described later, may be coupled to each other. This will be described in detail in the relevant section.

Referring back to FIG. 3 , the

bodies

10 and 30 of the deformable roller structure 1 according to an embodiment of the present invention are formed to protrude in the direction of the cylindrical portion 11 from one surface of the

second side portions

16 and 36, respectively. It may include a rotation shaft coupling portion (14, 34).

In detail, the rotating

shaft coupling portions

14 and 34 are members formed extending from the

second side portions

16 and 36 of the

bodies

10 and 30 in the cylindrical portion 11 direction, and a hollow may be formed therein. . At this time, the rotation shaft 90 is inserted into the hollow formed inside the rotation

shaft coupling parts

14 and 34, so that the rotation

shaft coupling parts

14 and 34 and the rotation shaft 90 can be bound to each other. As a result, when the rotation shaft 90 is rotated by an external force, the rotational force is also transmitted to the

bodies

10 and 30 through the rotation

shaft coupling portions

14 and 34 bound to the rotation shaft 90 , so that the

bodies

10 and 30 are the rotation shafts. It can rotate with (90). Although not shown, the rotation shaft 90 and the rotation

shaft coupling portions

14 and 34 may be coupled in an interlocking manner by forming a protrusion and an insertion portion, respectively, or may be coupled by bolting, an interference fitting method, or the like.

6 is a perspective view showing a step portion and a part of the movable member separated from the variable roller structure according to an embodiment of the present invention. 7 and 8 are views for explaining the movement of the step portion of the variable roller structure according to an embodiment of the present invention.

The variable roller structure 1 according to an embodiment of the present invention includes a first step portion 50 that can be expanded or reduced in diameter outside or inside the radius of the rotation shaft 90 . At this time, the first step portion 50 may be installed between the first body 10 and the second body 30 to support a portion of the lower surface of the film substrate.

In more detail, referring to FIGS. 4 and 5 , the first step portion 50 is formed to be larger than the diameter of the cylindrical portion 11 of the first body 10 according to a separate operation, so that the lower surface of the film substrate can be in contact with Alternatively, the first stepped portion 50 may be formed to be equal to or smaller than the diameter of the cylindrical portion 11 so as not to contact the lower surface of the film substrate.

To this end, the first step portion 50 may include a first movable member 52 movable in the radial direction of the rotation shaft outward or inward.

Specifically, the first step portion 50 may be formed such that one or more first moving members 52 are spaced apart from each other in the circumferential direction of the rotation shaft 90 . For example, the first movable member 52 may be formed in a plate shape having an inner surface 56 and an arc-shaped outer surface in contact with the outer peripheral surface of the first movable member 85 to be described later as shown in the drawings. .

In this case, a portion of the inner surface 56 of the first movable member 52 may protrude toward the center of the rotation shaft to come into contact with the first protrusion 84a of the first movable member 85 . As such, when a part of the inner surface 56 of the first movable member 52 comes into contact with at least one first protrusion 84a formed on the outer circumferential surface of the first movable member 85, the first movable member 52 moves The diameter of the first step portion 50 may be expanded while being driven outward from the center of the rotation shaft 90 .

In addition, the plate material of a predetermined width formed between the inner surface 56 and the outer surface of the first moving member 52 has a coupling portion 58 for connecting to the first body 10 or the second body 30 . can be formed. As an example, the coupling part 58 may be in the shape of a hole passing through the first moving member 52 , and a separate connection member may be connected to the first body 10 or the second body via the coupling part 58 . (30) can be connected. The size of the coupling portion 58 is the same as or larger than the maximum height of the first protrusion 84a of the first movable member 85 to be described later, so that the first movable member 52 moves in the radial direction of the rotation axis. and can serve as a guide to limit movement in other directions except for the radial direction of the rotation shaft.

On the other hand, the deformable roller structure according to an embodiment of the present invention may further include a support member 59 bound to one or more first moving member 52 . The support member 59 prevents the first moving member 52 from being separated from each other by being spaced apart or separated from the deformable roller structure 1 when the first moving member 52 moves in the radial direction of the rotation shaft 90 . The support member 59 may be a hook, a spring, a rubber band, etc., and one or more adjacent first movable members 52 or adjacent first movable members 85 or an n-th step to be described later It may be bound to any one or more of the wah or the

spacing maintaining units

40 and 42 .

For example, the support member 59 may be formed of a spring having an elastic force, so that an external force may be applied to the first moving member 52 in the central direction of the rotation shaft 90 . This not only allows the first moving member 52 to protrude in the radial direction and then to return to the rotation axis direction, but also to support the protruding moving member 52 so as not to be separated to the outside.

In an embodiment of the present invention, a plurality of first moving members 52 may be formed along the rotation direction of the rotation shaft 90 . In this case, the first movable members 52 may be formed to be spaced apart from each other by a predetermined distance, and may move independently of each other according to contact with the first protrusion 84a of the first movable member 85 .

The variable roller structure 1 according to an embodiment of the present invention includes a first movable member 85 as a configuration for changing the diameter of the first step portion 50 in the radial direction of the rotation shaft 90 as necessary. do. That is, in order to control the degree to which the first step portion 50 protrudes from the outer circumferential surfaces of the

bodies

10 and 30, a first movable member 85 in contact with the inner surface 56 of the first step portion 50 is included. can do.

More specifically, the first movable member 85 is a hollow member in which the rotation shaft 90 can be inserted therein, and may be installed between the rotation shaft 90 and the first step portion 50 . Also, the first movable member 85 may be rotatably formed about the rotation shaft 90 .

6 and 7 , at least one first protrusion 84a protruding radially outward of the rotation shaft 90 from the outer peripheral surface of the first movable member 85 may be formed on the outer peripheral surface of the first movable member 85 .

At this time, referring to FIG. 7 , as described above, a portion of the inner surface 56 of the first moving member 52 may be formed to protrude toward the center of the rotation shaft 90 . In addition, a protruding portion of the inner surface 56 of the first movable member 52 protruded as described above may be positioned to abut against the protruding first protruding portion 84a of the first movable member 85 . 1 position)

In this case, the movable first moving member 52 is driven outward from the center of the rotation shaft 90 by the first protrusion 84a. As a result, the diameter of the first stepped portion 50, more specifically, the diameter of the region of the first stepped portion 50 corresponding to the first moving member 52 may be increased. That is, when a part of the inner surface 56 is engaged with the first protrusion 84a of the first movable member 85, the first movable member 52 is pushed up radially outward of the rotation shaft, and thus the first The outer circumferential surface of the movable member 52 may form a step in the form of protruding outward in the radial direction of the rotation shaft 90 with respect to the cylindrical portion 11 of the first body 10 or the second body 30 .

At this time, the reason that the first moving member 52 does not completely disengage from the deformable roller structure 1 is because there is a restraining force by the supporting member 59 .

Alternatively, referring to FIG. 8 , when the first movable member 85 rotatably formed about the rotation shaft 90 rotates by a predetermined angle from the first position, the first protrusion 84a is also the first movable member It is rotated by a predetermined angle in the rotation direction of (85). Due to this, the protruding portion 56 of the inner portion of the first moving member 52 and the first protruding portion 84a are no longer engaged. (Second position) As a result, the first The diameter of the step portion 50, more specifically, the diameter of the first moving member 52 is reduced. That is, as shown in FIG. 8 , the first moving member 52 moves in the central direction of the rotation shaft 90 , and the step difference formed at the first position is also eliminated.

At this time, if the support member 59 is formed of a member exerting an elastic force such as a spring, the first moving member 52 may be more easily moved in the inner or outer direction of the rotation shaft 90 .

As can be seen, the variable roller structure 1 according to an embodiment of the present invention is formed to be pivotally rotatable about the rotation shaft 90 so that the first movable member 85 is in the first position or the second position, Steps may be selectively formed as needed.

In one embodiment of the present invention, a plurality of first protrusions 84a of the first movable member 85 may be formed to be spaced apart from each other at a predetermined distance along the circumferential direction of the outer circumferential surface of the first movable member 85 .

In this case, one first moving member 52 and one first protrusion 84a may correspond to each other one-to-one. That is, one first protrusion 84a may be formed to correspond to and contact with one first moving member 52 .

Alternatively, in one embodiment of the present invention, as the first movable member 85 rotates, a plurality of first movable members 52 may be formed to alternately contact with one first protrusion 84a. . That is, the first protrusion 84a of the first movable member 85 and the first movable member 52 may be formed to contact each other in a many-to-one correspondence.

4 and 5, the variable roller structure 1 according to an embodiment of the present invention has a first stepped portion 50, a second stepped portion 60, and a third stepped portion 70, etc. It is possible to form various stepped portions including three stepped portions. This is to vary the supporting position of the step portion supporting the lower surface of the film substrate according to the number of flexible printed circuit boards included in the film substrate in the width direction by expanding or reducing the diameter of the three stepped portions, respectively. As an example, the area corresponding to the step portion and the lower surface of the film substrate may be a sprocket hole area dividing each flexible printed circuit board or an outer peripheral area of the flexible printed circuit board.

First, referring to FIG. 6 , the first step portion 50 to the third step portion 70 have a first movable member 52 , a second movable member 62 , and a third movable member 72 , respectively. can In addition, movable members for expanding or reducing the diameter of each step may be provided, respectively, and these movable members may each have a first protrusion 84a, a second protrusion 84b, and a third protrusion 84c on the outer circumferential surface.

Referring back to FIG. 4 , one or more

spacing maintaining portions

40 and 42 having a predetermined thickness in the longitudinal direction of the rotation shaft 90 may be formed between the step portions adjacent to each other. By disposing the

spacing maintaining parts

40 and 42 in this way, one stepped part may be disposed to be spaced apart from the other adjacent stepped parts, and transport stability may be secured by maintaining the separation distance during driving.

At this time, the

gap maintaining parts

40 and 42 are members having a diameter corresponding to the outer circumferential surface of the cylindrical part 11 of the

bodies

10 and 30, and the rotation shaft 90 through a hollow formed therein similarly to the body. ) can be inserted and bound.

In one embodiment of the present invention, the

protrusions

84a, 84b, and 84c are disposed to be staggered from the protrusions of the stepped portions adjacent to each other, and may be driven in cooperation. Here, as an example, the adjacent protrusions are arranged to be staggered from each other, and as shown in FIG. 6 , the first protrusion 84a and the second protrusion 84b or the third protrusion 84c adjacent thereto are formed on the outer circumferential surface of the movable member. It means that the protruding positions are arranged so that they do not coincide with each other. That is, in the protrusions adjacent to each other, directions in which the protrusions protrude from the center of the rotation shaft 90 are different from each other.

At this time, when the first protrusion 84a and the corresponding protruding inner surface 56 are engaged with each other by properly rotating three movable members that are connected to each other and can rotate integrally, the first step 50 is A step may be formed by moving outward in the radial direction of the rotation shaft 90 .

However, since the second protrusion 84b and the third protrusion 84c are arranged to cross each other with the first protrusion 84a, they cannot be engaged with the corresponding protruding

inner surfaces

66 and 76, respectively, and thus the step difference is reduced. cannot form

On the other hand, referring back to FIG. 6 , when the first protrusion 84a and the corresponding protruding inner surface 56 do not mesh with each other by rotating the movable member again, the second protrusion 84b and the third protrusion ( 84c) engages with the oppositely protruding

inner surfaces

66 and 76. Accordingly, it is possible to form two steps capable of supporting a portion of the film substrate.

According to the driving principle of the step portion, the variable roller structure 1 according to an embodiment of the present invention can easily transport various film substrates having different numbers of flexible printed circuit boards with only a single roller structure without replacing the roller structure. can do.

For example, referring to FIGS. 1 and 4 , when transferring a film substrate having two sets of flexible printed circuit boards, only the first step portion 50 located in the middle portion is expanded in the radial direction of the rotation axis to the film substrate. It can be made to support the center of the width direction. At this time, the support of the central portion of the film substrate through the first stepped portion 50 is to prevent the substrate such as the flexible circuit board from sagging in the inner direction of the rotation shaft. Here, both sides of the film substrate are supported through the first side portions 15 respectively formed in the first body 10 and the second body 30, of course.

After that, as shown in FIG. 2, when the film substrate having three sets of flexible printed circuit boards is transferred, the second step part 60 and the third step part 70 are the rotation shafts as shown in FIG. 5 . The first stepped portion 50, which is extended in the radial direction of the , and the protrusion is disposed to alternate with the second stepped portion 60 and the third stepped portion 70 is moved in the inner direction of the rotation shaft 90, the second step Only the step by the part 60 and the third step part 70 may be formed. In this case, the second stepped portion 60 and the third stepped portion 70 may support a portion between the flexible printed circuit boards among the film substrates, respectively.

As in the above example, even if the protrusions of the adjacent stepped portions are not arranged in a form that is crossed with each other, more various stepped portions may be arranged according to a desired design.

Although the above-described embodiment has been described on the basis that there are three step portions, two or four or more step portions (the first step portion, the second step portion, ….. the nth step portion (n is a natural number greater than or equal to 2)) It may also be possible to form In addition, n corresponding movable members (first movable member, second movable member, ... nth movable member (n is a natural number equal to or greater than 2)) may be formed to expand or reduce the diameter of the plurality of step portions. .

On the other hand, the variable roller structure 1 according to an embodiment of the present invention is a configuration for rotating the first movable member 85 so that the diameter of the first step portion 50 is expanded or reduced, the step adjustment member 20 ) may be further included.

Referring to FIG. 1 , the step adjustment member 20 may be installed outside the second side portion 16 of at least one of the first body 10 and the second body 30 . In this case, the step adjustment member 20 may be formed in a ring shape capable of pivoting at a predetermined angle about the rotation shaft 90 as shown in the drawings.

In more detail, a separate connecting member connected to the step adjustment member 20 passes through the arc-shaped through-hole 17 formed in the second side 16 to finally the first movable member 85 or the hub body to be described later ( 80) can be bound. Accordingly, the first movable member 85 may be rotated by the rotation of the step adjustment member 20 . Here, as the step adjustment member 20 is directly or indirectly connected to the first movable member 85 as well as the second, third, and n-th movable members, it is of course possible to rotate the plurality of movable members.

The movable member is moved by the rotation of the step adjustment member 20 as described above, and accordingly, the movable member of each step portion may be driven. As a result, the diameter of each step may be expanded in a radially outward direction of the rotation shaft 90 or may be reduced in a radially inward direction of the rotation shaft 90 .

Meanwhile, as another embodiment, one or more step adjusting members 20 may be installed, and each step adjusting member 20 may be directly or indirectly connected to one or more movable members to differently control rotational motion for each movable member. have. Accordingly, even when flexible printed circuit boards having different widths are formed on the film substrate in a multi-row shape, the step portion can be easily applied to a required position.

The variable roller structure 1 according to an embodiment of the present invention may be rotated indirectly by introducing and rotating the hub body 80 connected thereto instead of directly rotating the first movable member 85.

More specifically, referring to FIG. 3 , the hub body 80 may be a cylindrical member having a hollow inside, similar to the first movable member 85 .

The cylindrical hub body 80 may be inserted and positioned along a hollow formed inside the

bodies

10 and 30 or the first movable member 85 . That is, the outer circumferential surface of the hub body 80 may be in contact with the

body

10 , 30 or the inner circumferential surface of the movable member including the first movable member 85 . In addition, the rotation shaft coupling portion 14 of the

bodies

10 and 30 may be inserted into the hub body 80 .

In this case, the first movable member 85 on which the first protrusion 84a is formed may be fixed on the outer circumferential surface of the hub body 80 by a separate coupling member such as a bolt. Through this, the hub body 80 and the first movable member 85 may rotate integrally. As such, when the hub body 80 is installed between the rotation shaft coupling portion 14 of the

bodies

10 and 30 and the first movable member 85, the first movable member 85 is rotated by rotating the hub body 80, The diameter of the step part can be changed.

In this case, the hub body 81 may be connected to each other by the step difference adjusting member 20 and a separate connecting member. That is, the hub body 80 may be rotated by the rotation of the step adjustment member 20 .

As such, when the variable roller structure 1 according to an embodiment of the present invention includes the hub body 81, it is advantageous in disposing a plurality of movable members capable of corresponding to a plurality of step portions. That is, as shown in FIG. 1 , after separately forming a ring-shaped movable member, it can be freely coupled to the hub body 80 according to the design. Of course, as the coupling method, various methods such as press fit, bolt fastening, and insertion fastening can be applied.

As can be seen, the variable roller structure according to an embodiment of the present invention can effectively transport various film substrates by variously changing the structure of the step portion without replacing the roller structure. Accordingly, there is an effect of reducing the time and cost due to the replacement of the roller structure.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , changes, deletions, additions, etc. may easily suggest other embodiments, but this will also fall within the scope of the present invention.

Claims

a first body 10 and a second body 30 formed in a cylindrical shape;

a first step portion (50) installed between the first body (10) and the second body (30);

It includes a first movable member (85) installed in contact with the first step (50),

The first step portion (50) is a variable roller structure in which the diameter is changed by the rotational movement of the first movable member (85).
The method of claim 1,

Each of the first body and the second body,

cylindrical part;

Including first side portions (15, 35) formed with a predetermined width on one side of the cylindrical portion in the direction of the end of the cylindrical portion,

The first side protrudes from the outer peripheral surface of the cylindrical portion to form a step,

The first body and the second body are deformable roller structures that are installed to face each other.
3. The method of claim 2,

said first body and said second body each further comprising a second side portion (16, 36) in the direction of the first side portion;

The outer peripheral surface of the second side is a deformable roller structure formed with the same or an expanded diameter compared to the outer peripheral surface of the first side.
The method of claim 1,

The first step 50 includes one or more first moving members 52,

The inner surface of the first movable member (52) is in contact with the outer peripheral surface of the first movable member (85),

When the inner surface of the first movable member 52 is in contact with the first protrusion 84a protruding from the outer circumferential surface of the first movable member 85 , the first movable member 52 is moved to the first movable member A variable roller structure in which the diameter of the first step portion (50) is expanded while being driven outward from the rotation center of (85).
5. The method of claim 4,

The first moving member 52 and the first protrusion 84a of the first movable member 85 are formed in a one-to-one to many-to-one correspondence,

When the first moving member 52 or the first protruding portion 84a is formed in plurality, the adjacent first moving member 52 or the first protruding portion 84a is a variable roller structure formed to be spaced apart from each other by a predetermined distance. .
4. The method of claim 3,

Two or more n-th step portions including one or more n-th moving members are included between the first body 10 and the second body 30, and one or more spacing maintaining portions 40 between adjacent n-th step portions are included. A deformable roller structure in which is formed.
7. The method of claim 6,

A deformable roller structure in which n n th movable members are formed to correspond to the n n th step portions.
7. The method according to claim 4 or 6,

The first moving member (52) further comprises one or more support members (59),

The support member (59) is a variable roller structure for binding the first moving member (52) to any one or more of the first body, the second body, the n-th step portion, or the spacing maintaining portion (40).
8. The method of claim 7,

The nth movable member is a deformable roller structure formed so as to cross each other with an n+1th or n-1th movable member and an nth protrusion adjacent to each other.
8. The method of claim 7,

further comprising a hub body (80) coupled to the second side (16, 36);

An outer peripheral surface of the hub body (80) is a variable roller structure formed to be in contact with an inner peripheral surface of the first body, the second body or the n-th movable member.
4. The method of claim 3,

The first body (10) and the second body (30) and further comprising a rotation shaft (90) coupled,

The first movable member (85) is a variable roller structure installed between the rotation shaft (90) and the first step portion (50).
12. The method of claim 11,

The first body (10) and the second body (30) is a variable roller structure including a rotation shaft coupling portion (14, 34) formed in the direction of the cylindrical portion on one surface of the second side portion.
12. The method of claim 11,

A variable roller structure installed on the outside of the second side of at least one of the first body and the second body and further comprising a step adjustment member configured to be rotatable about the rotation axis and rotate the first movable member .
The method of claim 1,

Further comprising a step adjustment member (20) for controlling the rotational movement of the first movable member (85),

The step difference adjusting member 20 is installed at least one variable roller structure corresponding to one-to-one or many-to-one with respect to the first to n-th movable members.