KR200493871Y1 - Axis apparatus for supporting roller - Google Patents

Abstract

A shaft device for supporting a roller is provided. The shaft device is a shaft device for supporting a roller that is disposed at the end of a cylindrical roller to support the roller, the outer diameter of which is not smaller than the inner diameter of the roller, and is made of a non-metallic material fixed to the roller so as to be in close contact with the roller. At one end of the rotation block, a first shaft that penetrates from the outside of the roller to the center of the rotation block and protrudes to the inside of the roller is formed at one end, and a second shaft that extends in the opposite direction of the first axis and protrudes outside the roller is formed at the other end It includes a formed shaft module, and a slip stopper coupled to a portion protruding through the rotation block of the first shaft, at least a portion of which extends around the first shaft to limit the axial movement of the rotation block.

Description

Axis apparatus for supporting roller

The present invention relates to a shaft device for supporting a roller that rotatably supports a roller at the end of a roller, and more particularly, a shaft device for supporting a roller that can support the roller more stably while preventing contamination inside the roller is about

The rotating machine element is used in a very useful form for industrial processes or machinery. Rotatable mechanical elements of various shapes transformed from a simple wheel to various other shapes are being applied to various mechanical devices. Such a rotating machine element includes an axis at the center of rotation.

The shaft may be formed in the machine element itself, or may be made in each location such as a device to which the machine element is applied. The shaft can also be deformed into various shapes or structures according to the shape of the mechanical element, the application position, and the structure of the entire device (refer to Korean Patent No. 10-1398527). The axis basically has the function of stably rotating by supporting the machine element to which the axis is applied.

However, as the structure of machinery, the environment used, and the purpose of use diversify, other problems that have not been considered before are also appearing. For example, if it is used in a place where pollutants such as soot are continuously generated, or if there is no choice but to be continuously exposed to these pollutants, there are problems in which machinery or mechanical elements are excessively polluted, and these problems occur depending on structural characteristics, etc. In some cases, the solution was even more difficult.

For example, in the case of a mechanical element that can have an empty space inside, such as a roller, contaminants can easily penetrate into the empty space inside the roller through a gap in the coupling part to which the shaft or other fastening means are coupled. There were problems such as malfunction of mechanical elements due to contamination or shortening of lifespan due to damage.

Republic of Korea Patent Publication No. 10-1398527 (2014.5.27), specification

A technical problem to be achieved by the present invention is to provide a shaft device for supporting a roller that can support the roller more stably while preventing contamination inside the roller, and can be detached conveniently.

The technical problem of the present invention is not limited to the problem mentioned above, and another technical problem not mentioned will be clearly understood by those skilled in the art from the following description.

In the shaft device for supporting the roller according to the present invention, the shaft device for supporting the roller is disposed at the end of the cylindrical roller to support the roller, the outer diameter is formed not to be smaller than the inner diameter of the roller, and the distance between the roller and the roller is in close contact a rotating block made of a non-metal material fixed to the roller so as to be coupled to the roller; A first shaft penetrating from the outside of the roller to the center of the rotation block and protruding inward of the roller is formed at one end, and a second shaft extending in the opposite direction of the first axis and protruding outside the roller is formed at one end. a shaft module on which a shaft is formed; and a slip stopper coupled to a portion protruding through the rotation block of the first shaft, at least a portion of which extends around the first shaft to limit the axial movement of the rotation block.

The rotation block may be a cylindrical block fixed to the roller by friction of the contact surface, including a through hole to which the first shaft is coupled in the center, and a contact surface engaged with the inner circumferential surface of the roller around the outer periphery.

The ratio b/2a of the axial thickness b of the contact surface to the outer diameter 2a of the rotary block may be in the range of 0.3 to 10.

The rotating block may be made of a non-metal material having heat resistance and corrosion resistance, and the non-metal material may be selected from at least one non-metal material including polytetrafluoroethylene.

The rotation block may be made of a non-metal material having a compressive strength of 68 to 890 kgf/cm ^{2 .}

In the shaft module, the second shaft is fixed to an external fixing device, and the first shaft is formed in a cylindrical shape having a diameter corresponding to the through hole so that the rotation block can be rotated around the first shaft.

The width of the second shaft may be increased by forming a step in a radial direction of the first shaft at a connection portion with the first shaft.

The second shaft may include an engaging portion formed in an angled shape on the outer periphery to be bitten by an external fixing device.

The slip stopper may have a ring shape surrounding the circumference of the first shaft.

The shaft device may further include a receiving groove recessed in a shape corresponding to the ring shape around the first shaft.

According to the present invention, not only can the shaft device be coupled to or separated from the roller very conveniently, but also the roller can be stably supported by the shaft device thus mounted. In particular, the coupling portion of the shaft device and the roller is effectively sealed to effectively block the inflow of external pollutants such as soot. Therefore, it is possible to prevent contamination of rollers, prevent damage or malfunction due to contamination, and significantly increase the lifespan of the roller and the entire device to which the roller is applied.

1 is a perspective view of a shaft device for supporting a roller according to an embodiment of the present invention viewed from different directions.
Figure 2 is an exploded perspective view of the shaft device for supporting the roller of Figure 1;
3 is a longitudinal cross-sectional view of the shaft device for supporting the roller of FIG. 1 .
4 is a view for explaining the slip stopper of the shaft device for supporting the roller of FIG. 1 .
5 is a view illustrating a coupling process of the shaft device for supporting the roller of FIG. 1 and the roller and the external fixing device.
Figure 6 is a state diagram of the use of the shaft device for supporting the roller according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete and common knowledge in the technical field to which the present invention belongs. It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a shaft device for supporting a roller according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6 .

1 is a perspective view of a shaft device for supporting a roller according to an embodiment of the present invention viewed from different directions, FIG. 2 is an exploded perspective view of the shaft device for supporting a roller of FIG. 1, and FIG. 3 is for supporting the roller of FIG. It is a longitudinal cross-sectional view of the shaft device, and FIG. 4 is a view for explaining the slip stopper of the shaft device for supporting the roller of FIG. 1 .

Referring to FIG. 1 , the shaft device 1 for supporting the rollers (hereinafter, referred to as shaft device) according to the present invention has a structure in which the rotation block 10 is coupled to the shaft module 20 and rotates. Separation of the rotation block 10 is prevented by the slip stopper 30 . The rotation block 10, the shaft module 20, and the slip stopper 30 are separated and combined very easily, and the rotation block 10 itself is inserted into the roller (see 2 in FIGS. 5 and 6) as described below. It can be combined very conveniently in this way. That is, the shaft device 1 can stably support the roller with a very simple and efficient structure, and can be easily detached and separated, so that maintenance work can be performed conveniently.

In particular, in the shaft device 1 according to the present invention, the entire rotating block 10, which is a part fixed to the roller, is made of a non-metal material, and by effectively utilizing these material properties, a very effective sealing action is possible with the simple structure as described above. . In other words, using the rotary block 10 at the end of the roller, it effectively seals to prevent contaminants such as soot or combustion gas from penetrating into the roller, while rotating using the shaft or supporting the roller very stably. Complex functions can be integrated into a single structure and implemented.

The shaft device 1 for supporting the rollers according to the present invention is configured as follows. The shaft device for supporting the roller (1) is a shaft device for supporting the roller that is disposed at the end of the cylindrical roller to support the roller, the outside diameter of which is not smaller than the inside diameter of the roller, and is coupled to the roller so that it is in close contact with the roller. A rotating block 10 made of a fixed non-metal material, a first shaft 21 penetrating from the outside of the roller to the center of the rotating block 10 and protruding to the inside of the roller is formed at one end, and at the other end, the first The shaft module 20 (see FIGS. 1 and 6) extending in the opposite direction to the shaft 21 and having a second shaft 22 protruding outside the roller, and the rotation block 10 of the first shaft 21 A slip stopper 30 coupled to a portion protruding through and extending around the first shaft 21 to limit the axial movement of the rotation block 10 is included. According to an embodiment of the present invention, the rotary block 10 has a through hole (refer to 11 in FIG. 2) to which the first shaft 21 is coupled to the center, and a contacting surface engaged with the inner circumferential surface of the roller around the outer periphery (FIG. 2) 12), and may be a cylindrical block fixed to the roller by friction of the contact surface 12.

Hereinafter, the shaft device 1 for supporting the roller will be described in more detail through an embodiment of the present invention.

1 and 2, the rotation block 10 may be formed in a cylindrical shape. The rotating block 10 may have a contact surface 12 engaged with the inner circumferential surface of the roller (see 2 in FIGS. 5 and 6) formed around the outer periphery as described above. The rotation block 10 is formed so that the outer diameter is not smaller than the inner diameter of the roller, preferably, the outer diameter of the rotation block 10 may be formed to be the same as the inner diameter of the roller. However, it is not necessarily limited as such, and if necessary, it is also possible to make the outer diameter of the rotary block 10 smaller than the inner diameter of the roller in consideration of the elasticity of the non-metallic material. In such a case, it is possible to more firmly combine the roller with the interference fitting method, and the sealing effect can be maximized by making the contact surface 12 and the roller more strongly adhered. In addition, by increasing friction accordingly, it is possible to maintain a stable coupling state. In this embodiment, the cylindrical rotation block 10 is described as the basis, but the rotation block 10 has an outer diameter not smaller than the inner diameter of the roller, so that the end of the roller can be shielded and the limit that can be closely coupled with the roller It can be transformed into other forms within. However, in this embodiment, the description will be made based on the rotation block 10 having a cylindrical shape.

The rotating block 10 is a contacting surface 12 formed around the outer periphery to maintain a fixed state in contact with the roller, and also exhibit a shielding effect, so that more robust fixation is possible and the shielding effect can be increased. ) a technical correlation of the size of the contact surface 12 to the size can be provided. For example, according to the present embodiment, the outer diameter of the rotating block 10 and the axial direction of the contact surface 12 (meaning the direction of a normal axis in which the rotating block rotates around it, in the case of this embodiment, The first axis and/or the second axis equivalent thereto and/or the second axis equivalent thereto may mean the longitudinal direction of the entire shaft module including them) The thickness may be formed in a ratio within a certain range. Preferably, the ratio b/2a formed by the axial thickness b (refer to b in FIG. 2) of the contact surface 12 compared to the outer diameter 2a of the rotation block 10 may be in the range of 0.3 to 10. The outer radius (a) shown in FIG. 2 represents the vertical distance from the contact surface to the rotation axis, and the outer diameter corresponds to twice the outer radius. Therefore, the outer diameter is denoted by 2a to indicate that it is twice the a indicating the outer radius. If the thickness of the contact surface 12 exceeds this range, it is not easy to combine with the roller, there is a problem in rotation, and there is a concern that the production is not easy, and when the thickness of the contact surface 12 is smaller than this range, the rotation block (10) This roller is easily detached from the roller, or stable support is difficult, and it may be damaged depending on the application environment. As a result, the sealing effect may decrease and mechanical damage may occur. Therefore, it is more preferable to set the ratio of the axial thickness (b) of the contact surface 12 to the outer diameter (2a) of the rotary block 10 within the range of the above-described ratio.

The rotation block 10 may be made of a non-metal material having elasticity, heat resistance, and corrosion resistance, and the non-metal material is selected from at least one non-metal material including, for example, polytetrafluoroethylene (PTFE). it could be The rotating block 10 may be made of, for example, synthetic resin and thus have basic elasticity and plasticity, which may be relatively large compared to a metal material in a general scope. In addition, the rotation block 10 is made of a non-metal material having heat resistance and corrosion resistance, so it can withstand high temperature combustion gas or exhaust gas, and the lifespan can be greatly extended even in a harsh environment. On the other hand, the shaft module 20 may be formed of a metal material to provide more increased mechanical stability.

More specifically, the rotation block 10 may be made of a non-metal material having a compressive strength of 68 to 890 kgf/cm ^{2 .} The compressive strength may be, for example, measured according to ASTM D695 test standard. Preferably, the rotating block 10 may be made of polytetrafluoroethylene having a compressive strength in the above range, and the shaft module 20 may be entirely made of stainless steel. Through this configuration, the rotation block 10 has characteristics such as corrosion resistance, appropriate mechanical strength (which may mean the ability to withstand deformation), and heat resistance, and the shaft module 20 supporting the rotation block 10 Silver may have properties such as corrosion resistance, relatively greater mechanical strength, and heat resistance. With such a configuration, even in harsh environments such as high temperature, corrosiveness, and high pressure, damage to the shaft device itself can be avoided. In addition, by this material configuration, it is possible to minimize the generation of static electricity to prevent unnecessary attachment of fine particles such as dust to the shaft device 1 .

That is, the rotation block 10 is made of a combination of a non-metallic material having such a shape and excellent physical properties, so that it can be coupled in close contact with the end of the roller and can firmly and stably support the roller. In addition, since it can be rotated by being firmly coupled with the shaft module 20, it is possible to effectively isolate the space inside the roller and the outside, and to prevent the penetration of pollutants such as soot or exhaust gas into the roller.

The shaft module 20 is formed in a form in which the first shaft 21 and the second shaft 22 are integrally connected to each other. 1 to 3, the shaft module 20 has a first shaft 21 formed at one end and a second shaft 22 is formed at the other end opposite to the first shaft 21 and the second shaft module 20. The two shafts 22 may be formed to extend in the same direction. The first shaft 21 penetrates the rotation block 10 through the through hole 11 formed in the center of the rotation block 10 from the outside of the roller and can protrude to the inside of the roller (see FIGS. 5 and 6). , the second shaft 22 may extend in the opposite direction to the first shaft 21 and be positioned on the outside of the roller. As described above, the shaft module 20 in which the first shaft 21 and the second shaft 22 are combined more firmly supports the rotation block 10, and the shaft device 1 and the entire roller are stable even with an external fixing device. can be fixed with

The structure of the shaft module 20 will be described in more detail. The shaft module 20 may be formed in a cylindrical shape having a diameter corresponding to the through hole 11 of the rotation block 10 , the second shaft 22 being bitten by an external fixing device and fixed, and the first shaft 21 being fixed to the shaft module 20 . have. Accordingly, the rotation block 10 may be rotated around the first shaft 21 . That is, the shaft module 20 is disposed in a state of being fixed to the external fixing device through the second shaft 22 , and the rotation block 10 is fixed to the roller as described above and the first shaft 21 of the shaft module 20 . ) can be rotated around the perimeter with the roller. Preferably, the diameter of the first shaft 21 may coincide with the diameter of the through hole 11 in the center of the rotation block 10, and with such a structure, it is possible to block the entry and exit of contaminants as well. In addition, as shown in FIGS. 2 and 3 , the second shaft 22 forms a step 23 in the radial direction of the first shaft 21 at the connection portion with the first shaft 21 and the width can be increased. Therefore, it can serve as a center of rotation in a more stable state.

In addition, since the step 23 of the second shaft 22 extends in the radial direction of the first shaft 21, there is a gap between the first shaft 21 and the through hole 11 into which the first shaft 21 is inserted. Even if it occurs, it can play a role to prevent it from the outside. Therefore, it can also effectively contribute to the shielding of external pollutants. The second shaft 22 may include an engaging portion 22a that is formed in an angled shape on the outer periphery to be bitten by an external fixing device, and may prevent rotation of the shaft module 20 by using the engaging portion 22a. The engaging portion 22a, for example, may be such that the outer surface of the second shaft 22 is plane-processed to form an angled edge, but this is only an example, so the shape of the engaging portion 22a in another embodiment, A method of fixing the second shaft 22 to an external fixing device may be appropriately changed. The coupling process of the external fixing device and the shaft device 1 according to this embodiment will be described later in more detail.

The first shaft 21 and the second shaft 22 may be formed of a metal material, for example, may be formed of stainless steel as described above. The first shaft 21 and the second shaft 22 may be integrally formed in a machining process without the need to be assembled with each other, but there is no need to be limited thereto. If necessary, the first shaft 21 and the second shaft 22 may be manufactured separately from each other and assembled so as not to rotate with each other. In the case of the shaft module 20 in which the first shaft 21 and the second shaft 22 are integrally formed as in the present embodiment, structural stability and rigidity may be relatively increased.

The slip stopper 30 is coupled to the first shaft 21 of the shaft module 20 . Through this, the shaft device 1 including the rotation block 10 , the shaft module 20 , and the slip stopper 30 is completed. 1 to 3 , the slip stopper 30 is coupled to a portion protruding through the rotation block 10 of the first shaft 21 , and at least a portion of the first shaft 21 extends around the first shaft 21 . can be Therefore, in contact with the rotation block 10 and in the axial direction of the rotation block 10 (as described above, it refers to the direction of a normal axis in which the rotation block rotates around it, in this embodiment the first axis and / or equivalently to the second axis and / or equivalently to the longitudinal direction of the entire shaft module including them) may limit movement. As in the present embodiment, the slip stopper 30 may be formed in a ring shape surrounding the circumference of the first shaft 21 , and may be deformable due to elasticity as shown in FIG. 4 . Therefore, it is possible to conveniently assemble and disassemble the entire shaft device 1 for supporting the rollers in a simple way of coupling or conversely separating the slip stopper 30 around the first shaft 21 as shown in FIG. 2 .

The slip stopper 30 may, for example, be formed in a shape including a ring part 31 and a groove part 32 as shown in FIG. 4 . The ring portion 31 is a portion formed in a ring shape as a whole, and the end at which the groove portion 32 is located may be open to couple with the first shaft 21 . The groove portion 32 may be formed so that the open end portion of the distal end can be more easily adjusted by inserting an instrument into the groove. The annular slip stopper 30 may be inserted into the receiving groove 21a recessed in a shape corresponding to the annular shape around the first shaft 21 as shown in FIGS. 1 to 3, and the receiving groove ( 21a) can maintain position from the inside. The slip stopper 30 may remain fixed inside the receiving groove 21a, but may rotate around the first shaft 21 inside the receiving groove 21a depending on circumstances. The receiving groove 21a has an appropriate depth to accommodate only a portion of the inner peripheral side of the annular slip stopper 30 and the outer peripheral side can be exposed. Through this, at least the slip stopper 30 outside the circumference of the first shaft 21 Some may implement extended structures. Accordingly, the rotation block 10 does not escape from the shaft module 20 and the overall coupling structure of the shaft device 1 can be stably maintained.

5 is a view illustrating a coupling process between the roller supporting shaft device of FIG. 1 and the roller and the external fixing device, and FIG. 6 is a state diagram of the use of the roller supporting shaft device according to an embodiment of the present invention.

Hereinafter, with reference to FIGS. 5 and 6, the coupling process and action of the shaft device for supporting the roller will be described in more detail.

The shaft device 1 may be combined with a roller 2 and an external fixing device as shown in FIG. 5 . The roller 2 has a cylindrical shape and may be hollow inside. A step portion 2a is formed inside the distal end of the roller 2 to prevent the rotation block 10 from being pushed into the roller 2 . The external fixing device may include a first support plate 3a and a second support plate 4a, and the first support plate 3a has an insertion groove 3b open to one end of the first support plate 3a. is formed, and a fixing hole 4b penetrating through the second support plate 4a in an angular shape may be formed on the inside.

The shaft device (1) can be coupled with the roller (2) very conveniently by a fitting method of inserting the rotary block (10) into the end of the roller (2) without using a separate fastening element. Technical characteristics such as the material characteristics of the rotary block 10 as described above, the structural features including the contact surface 12, and the ratio of the axial thickness of the contact surface 12 to the outer diameter of the rotation block 10 By this, the rotating block 10 can be coupled and fixed very firmly in a state in close contact with the roller 2 even by a simple fitting method.

The shaft device 1 coupled with the roller 2 is fixed to the external fixing device using the second shaft 22 of the shaft module 20 . The shaft module 20 is fixed so that the second shaft 22 is fixed to an external fixing device so as not to rotate. As an example of such a fixing method, an external fixing device having a complex structure of the first support plate 3a and the second support plate 4a may be applied as shown. The second shaft 22 may first slide along the insertion groove 3b of the first support plate 3a to be inserted into the first support plate 3a. When the position is determined in this state, the fixing hole 4b of the second support plate 4a is fitted around the protruding second shaft 22, and the first support plate 3a and the second support plate 4a are moved to each other. It can be fixed so as not to Although not shown, the first support plate 3a and the second support plate 4a may be fixed to each other by a screw coupling method or the like. The insertion groove 3b and the fixing hole 4b formed in the first support plate 3a and the second support plate 4a may each include an angled portion, and the angled portion is an angled portion of the second shaft 22 described above. It is possible to block the rotation of the shaft module 20 by engaging with the engaging portion (22a) of the shape. In this state, the shaft device 1 may be coupled to the roller 2 and an external fixing device.

Although not shown, a plurality of pairs of the shaft device 1 and the roller 2 may be arranged side by side, and a plurality of pairs may be coupled side by side to the external fixing device composed of the first support plate 3a and the second support plate 4a. The illustrated coupling structure may exemplarily show any one of them.

As shown in FIG. 6 , the shaft device 1 rotates with the rotation block 10 fixed to the roller 2 . The shaft module 20 serves to support the rotation block 10 and the roller 2 at the center of rotation and is fixed to an external fixing device so as not to rotate by itself. Accordingly, the rotation block 10 is rotated around the axis module 20 (in particular, around the first shaft inserted through the rotation block 10). In this structure, the first shaft 21 and the through hole 11 of the rotation block 10 are in close contact, and the contact surface 12 of the outer peripheral portion of the rotation block 10 and the inner peripheral surface of the roller 2 are also in close contact as described above. Since it is tightly adhered to the structure to maximize the shielding effect from the outside, it is possible to effectively block the inflow of external pollutants into the roller (2). In addition, accessories such as the slip stopper 30 or the groove structure such as the receiving groove 21a can be maintained inside the shielded roller 2 as shown in the figure, rather than the outside through which the contaminants flow, so unnecessary contamination is prevented. damage can be minimized. In this way, the shaft device 1 for supporting the roller can be used in combination with the roller 2 .

In this embodiment, the roller 2 may be used to support a sheet-type filter installed in an exhaust pipe through which exhaust gas passes, and the filter moving in a state supported on the surface of the roller by an external force can be moved more easily. It can also be used to help. The structure of the shaft device 1 including the rotation block 10 of the present invention can exhibit its function excellently, particularly in such a place of use. That is, the exhaust pressure of the exhaust gas applied to the filter when it is spread widely and comes into contact with the exhaust gas can be effectively relieved by the combined structure of the rotating block 10 and the shaft module 20, and at the same time, the exhaust gas is reduced by using the above-described shielding function. Inflow into the roller 2 can also be effectively blocked. In this way, the effect can be maximized by applying the shaft device 1 for supporting the roller to an appropriate place of use.

Hereinafter, the effect of the present invention will be described in more detail through experimental examples. Hereinafter, in the description of the experimental examples, the above-described constituent parts will be described by referring to them without using separate symbols.

<Experimental example>

First, in the format shown in FIG. 5, shaft devices were inserted and fixed on both sides of the roller (iron, length 1.05 m). The outer diameter (2a) of the rotation block of the shaft device (shaft module: stainless steel material, rotation block: PTFE material) was 24 mm, and the axial thickness (b) of the contact surface is as shown in Table 1. At this time, a load of 25 kg was hung on the roller, and the state of the rotating block was visually observed while rotating the roller while reciprocating slowly. The application of a load of 25 kg to the roller is applied in a harsh environment where large pressure is applied to the roller, such as when the shaft device is applied to the support roller that supports the sheet-type filter applied to the exhaust gas dust collector of a power plant. It was meant to imitate what was going on. The results are shown in Table 1.

b (mm) b/2a Rotating block exterior 6 0.25 some rupture 7.2 0.30 no rupture 8 0.33 no rupture 20 0.83 no rupture 100 4.17 no rupture 200 8.33 no rupture 240 10.0 no rupture

As shown in Table 1, when b/2a was less than 0.3, there was a phenomenon in which the rotation block was ruptured. From these results, it can be seen that b/2a needs to be 0.3 or more in a particularly severe environment. In addition, it was confirmed that the rupture phenomenon of the rotating block did not occur until b/2a was 10, and it was confirmed that it operates smoothly.

From the above result, it turns out that b/2a is preferably in the range of 0.3-10, and it turns out that it is more preferable.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: Shaft 2: Roller
2a: step part 3a: first support plate
3b: insertion groove 4a: second support plate
4b: fixing hole 10: rotating block
11: Through hole 12: Adhesive surface
20: axis module 21: first axis
21a: receiving groove 22: second shaft
22a: engagement part 23: step
30: slip stopper 31: ring part
32: groove

Claims (10)

In the shaft device for supporting the roller disposed at the end of the cylindrical roller to support the roller,
a rotating block made of a non-metallic material having an outer diameter not smaller than the inner diameter of the roller, which is formed to shield the end of the roller, and is fixed to the roller by being coupled to the roller so as to be in close contact with the roller;
A first shaft penetrating from the outside of the roller to the center of the rotation block and protruding inside the roller is formed at one end, and a second shaft extending in the opposite direction to the first axis and protruding outside the roller is formed at the other end. a shaft module on which a shaft is formed; and
and a slip stopper coupled to a portion protruding through the rotation block of the first shaft, at least a portion of which extends around the first shaft to limit the axial movement of the rotation block,
The rotation block is a cylindrical block fixed to the roller by friction of the contact surface, including a through hole to which the first shaft is coupled in the center, and a contact surface engaged with the inner circumferential surface of the roller around the outer periphery,
The ratio b/2a of the axial thickness b of the contact surface to the outer diameter 2a of the rotating block is in the range of 0.3 to 10,
In the shaft module, the second shaft is fixed to an external fixing device, and the first shaft is formed in a cylindrical shape having a diameter corresponding to the through hole so that the rotation block is rotated around the first shaft,
The second shaft has a step in the radial direction of the first shaft at the connection portion with the first shaft and increases in width,
The rotating block is made of a non-metallic material having heat resistance and corrosion resistance,
The non-metal material is selected from at least one non-metal material including polytetrafluoroethylene,
The slip stopper is a shaft device for supporting a roller to be maintained inside the shielded roller. delete delete delete According to claim 1,
The rotary block is a shaft device for supporting a roller made of a non-metal material having a compressive strength of 68-890 kgf/cm ^{2 .} delete delete According to claim 1,
The second shaft is formed in an angled shape on the outer periphery, the shaft device for supporting the roller comprising a biting portion to the external fixing device. According to claim 1,
The slip stopper is a shaft device for supporting a roller having a ring shape surrounding the circumference of the first shaft. 10. The method of claim 9,
A shaft device for supporting a roller further comprising a receiving groove recessed in a shape corresponding to the ring shape around the first shaft.

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