CN218196494U - Easy dismouting deflector roll - Google Patents

Abstract

The application relates to the field of guide rollers, and particularly discloses an easily-disassembled guide roller which comprises a guide roller body, a guide roller shaft and a mounting shaft; the guide roller shaft is coaxially and fixedly connected to the guide roller body, and two ends of the guide roller shaft respectively extend out of two ends of the guide roller; the installation axle is provided with two, two the installation axle respectively with the both ends of guide roll axle correspond, the installation axle with the coaxial setting of guide roll axle, the guide roll axle with be provided with the coupling mechanism who is used for connecting both between the installation axle. This application has the more convenient effect of dismouting that makes the deflector roll.

Description

Easy dismouting deflector roll

Technical Field

The application relates to the field of guide rollers, in particular to an easily-disassembled guide roller.

Background

At present, guide rollers are generally used in calendering various plastics such as PVC, PP, PC and the like in the plastic industry.

In the related art, the guide roller comprises a guide roller body and a roller shaft, wherein the roller shaft is coaxially and fixedly connected to the guide roller body, and two ends of the roller shaft extend out of two ends of the guide roller body; when the staff uses the deflector roll, install the bearing respectively with the both ends of roller, then install the bearing at both ends respectively on the bearing frame that corresponds in the frame.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the worker installs the bearing at the end part of the roll shaft, the roll shaft and the bearing inner ring are in small interference fit, so that the bearing is inconvenient to install at the end part of the roll shaft every time; when the guide roller is used, the surface of the guide roller body is worn, the guide roller needs to be replaced regularly, the bearing needs to be detached from the bearing seat firstly when the guide roller is replaced each time, then the bearing is detached from the roller shaft, and the bearing is inconvenient to detach from the end part of the roller shaft each time due to small interference fit between the roller shaft and the bearing inner ring; in conclusion, the guide roller is inconvenient to disassemble and assemble.

SUMMERY OF THE UTILITY MODEL

In order to make the dismouting of deflector roll more convenient, this application provides an easy dismouting deflector roll.

The application provides a pair of easy dismouting deflector roll adopts following technical scheme:

an easily assembled and disassembled guide roller comprises a guide roller body, a guide roller shaft and an installation shaft; the guide roller shaft is coaxially and fixedly connected to the guide roller body, and two ends of the guide roller shaft respectively extend out of two ends of the guide roller; the installation axle is provided with two, two the installation axle respectively with the both ends of guide roll axle correspond, the installation axle with the coaxial setting of guide roll axle, the guide roll axle with be provided with between the installation axle and be used for connecting coupling mechanism between them.

By adopting the technical scheme, when a worker installs a new guide roller for the first time, bearings are respectively installed at one end of the two installation shafts, the bearings are installed on the corresponding bearing installation seats, then the other end of the installation shaft is connected to the end part of the guide roller shaft by using the connecting mechanism, and the first installation of the guide roller is completed; when the guide roller needs to be replaced after being used for a period of time, the connection of the guide roller shaft and the mounting shaft by the connecting mechanism is released, and the guide roller body is detached from the mounting shaft; when a new guide roller body is installed again, the end part of the guide roller shaft corresponds to the end part of the installation shaft, and then the guide roller shaft and the installation shaft are connected together by using a connecting mechanism; to sum up, in bearing life's cycle, the installation axle need not to dismantle and reinstall, the step of the dismouting that has significantly reduced for the dismouting of deflector roll is more convenient.

Optionally, the connecting mechanism includes a connecting sleeve and a connecting assembly disposed on the mounting shaft for connecting the connecting sleeve to the mounting shaft; one end of the connecting sleeve is provided with a first connecting hole, the end part of the guide roller shaft extends into the first connecting hole, the side wall of the guide roller shaft is attached to the side wall of the first connecting hole, the end part of the guide roller shaft abuts against the connecting sleeve, and a limiting structure for limiting the relative rotation of the connecting sleeve and the guide roller shaft is arranged between the connecting sleeve and the guide roller shaft; the other end of the connecting sleeve is provided with a second connecting hole, and one end of the mounting shaft extends into the second connecting hole.

By adopting the technical scheme, when a worker connects the guide roll shaft and the mounting shaft together by using the connecting mechanism, one end of the connecting sleeve, which is provided with the first connecting hole, is sleeved on the guide roll shaft, the other end of the connecting sleeve is sleeved on the mounting shaft, the connecting sleeve is connected to the mounting shaft by using the connecting assembly, the connecting sleeve limits the radial and axial movement of the guide roll shaft, and the connecting sleeve and the guide roll shaft cannot rotate relatively under the action of the limiting structure; when a worker removes the guide roller body, the connecting function of the connecting assembly is removed, the connecting sleeve is pulled in the direction away from the guide roller shaft, the connecting sleeve is separated from the guide roller shaft, and the guide roller body is removed from the mounting shaft; to sum up, the disassembly and assembly operation is simple and the connection is reliable.

Optionally, the connecting assembly includes a locking ring and a pressing member disposed on the mounting shaft for pressing the locking ring close to the roller guide shaft; the locking ring is coaxially sleeved on the mounting shaft, and openings penetrating through the inner side wall and the outer side wall of the locking ring and two ends of the locking ring are formed in the locking ring; the inside wall of lock ring with the lateral wall laminating of installation axle, the lateral wall slope of lock ring sets up just the tip of lock ring is close to the adapter sleeve, second connecting hole lateral wall correspond to the position department of lock ring with the lateral wall laminating of lock ring.

By adopting the technical scheme, when a worker connects the connecting sleeve and the mounting shaft by using the connecting assembly, the locking ring is sleeved on the mounting shaft, then the locking ring extends into the second connecting hole, the extrusion part is used for extruding the locking ring, the inner side wall of the locking ring extrudes the outer side wall of the mounting shaft, so that the inner side wall of the locking ring and the outer side wall of the mounting shaft are connected together under the action of friction force, the outer side wall of the locking ring extrudes the inner side wall of the second connecting hole, the locking ring and the connecting sleeve are connected together under the action of friction force, and the mounting shaft and the connecting sleeve are connected together; in the process of connecting, because the lateral wall slope of lock ring sets up, make it have from the centering effect for the axiality between adapter sleeve and the installation axle is better.

Optionally, the pressing part comprises a bearing plate, a wedge block and a bolt; the bearing plate is arranged on the mounting shaft in a sliding mode along the axial direction of the mounting shaft; the mounting shaft is provided with a yielding hole, the yielding hole penetrates through the side wall of the mounting shaft, one side, away from the guide roller shaft, of the yielding hole is obliquely arranged, and an opening, close to one end of the bearing plate, of the yielding hole is smaller than an opening at the other end of the yielding hole; wherein relative both sides all run through the hole of stepping down, the voussoir is kept away from the slope of one side of guide roller axle set up and with the lateral wall laminating in hole of stepping down, the voussoir is close to one side of lock ring with the lock ring laminating, the free end of bolt runs through loading board and threaded connection in on the tip of voussoir.

By adopting the technical scheme, when a worker extrudes the locking ring by using the extrusion part, the small end of the wedge block extends into the abdicating hole towards the bearing plate, then the bearing plate corresponds to the wedge block, the free end of the bolt penetrates through the bearing plate and is in threaded connection with the small end of the wedge block, then the bolt is screwed by using a wrench to enable the wedge block to be close to the bearing plate, the wedge block extrudes the locking ring while being close to the bearing plate, the bearing plate moves close to the locking ring, and the mounting shaft and the connecting sleeve are connected together; when the worker releases the extrusion action of the extrusion component, the bolt is unscrewed in the opposite direction, so that the free end of the bolt is separated from the wedge block, the wedge block is separated from the abdicating hole, and the extrusion action is released; when the wedge block extrudes the locking ring, the extrusion effect is more reliable under the combined action of the blocking effect of the side wall of the abdicating hole, the pulling force effect of the bolt and the friction force between the wedge block and the side wall of the abdicating hole; when the extrusion is released, the bolt is screwed, and the operation is convenient and fast.

Optionally, the mounting shaft is slidably connected to a sliding sleeve corresponding to the position of the bearing plate, and the bearing plate is fixedly connected to one side of the sliding sleeve, which is far away from the mounting shaft.

Through adopting above-mentioned technical scheme, under the guide effect of sliding sleeve, the axis motion along the installation axle that the loading board can be more stable.

Optionally, a limiting structure is arranged between the sliding sleeve and the mounting shaft for limiting relative rotation of the sliding sleeve and the mounting shaft.

Through adopting above-mentioned technical scheme, under limit structure's restriction, the circumference relative position between loading board and the hole of stepping down can keep, need not to correspond loading board and the hole of stepping down at every turn during the use, further improvement the installation effectiveness of deflector roll.

Optionally, the head of the bolt is fixedly connected with a rotating rod, and the axis of the rotating rod is intersected with the axis of the bolt.

Through adopting above-mentioned technical scheme, the staff can directly use the dwang to twist and move the bolt, need not to use the spanner to twist and moves the bolt, further improvement the convenience of the dismouting of deflector roll.

Optionally, the tip of deflector roll axle is provided with the chamfer, the chamfer of deflector roll axle tip with the adapter sleeve laminating.

Through adopting above-mentioned technical scheme, under the effect of the centering of making oneself of chamfer, further improvement the axiality between guide roll axle and the adapter sleeve.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the guide roller shaft is arranged on the guide roller body, the installation shaft is arranged outside the guide roller shaft, the connection mechanism is arranged on the installation shaft, when a worker removes the guide roller body, the connection between the installation shaft and the guide roller shaft is removed by the connection mechanism, so that the guide roller body can be removed, the installation shaft does not need to be removed, the guide roller can be more conveniently removed, when the guide roller body is installed again, the connection mechanism is used for connecting the installation shaft and the guide roller shaft together after the end part of the guide roller shaft corresponds to the end part of the installation shaft, the installation shaft does not need to be re-installed, so that the installation of the guide roller is more convenient, and in general, the guide roller is more convenient to disassemble and assemble;

2. by arranging the limiting structure between the sliding sleeve and the mounting shaft, the circumferential relative position between the bearing plate and the abdicating hole can be kept, and the bearing plate does not need to be corresponding to the abdicating hole every time when the guide roller is used, so that the mounting efficiency of the guide roller is further improved;

3. through the head fixed connection dwang at the bolt, the staff can directly use the dwang to twist and move the bolt, need not to use the spanner to twist and moves the bolt, further improvement the convenience of the dismouting of deflector roll.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of the connection between the shaft of the guide roller, the connecting sleeve and the mounting shaft in the embodiment of the present application;

FIG. 3 is a schematic sectional view of a connecting sleeve in the embodiment of the application;

FIG. 4 is a schematic view of a locking ring according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a mounting shaft in an embodiment of the present application;

fig. 6 is a schematic view showing the connection between the bolt and the rotating lever in the embodiment of the present application.

Reference numerals: 1. a guide roller body; 2. a guide roller shaft; 3. installing a shaft; 31. a hole of abdication; 4. a connecting mechanism; 41. connecting sleeves; 411. a first connection hole; 412. a second connection hole; 42. a connecting assembly; 421. a locking ring; 4211. opening the gap; 422. an extrusion member; 4221. a carrier plate; 4222. wedge blocks; 4223. a bolt; 5. a confinement structure; 51. a protrusion; 52. a chute; 6. a sliding sleeve; 7. rotating the rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses easy dismouting deflector roll.

Referring to fig. 1, the easy-to-assemble and disassemble guide roller comprises a guide roller body 1, a guide roller shaft 2 and a mounting shaft 3; the guide roller shaft 2 is coaxially and fixedly connected to the guide roller body 1, and two ends of the guide roller shaft 2 respectively extend out of two ends of the guide roller body 1; installation axle 3 is provided with two, and two installation axles 3 correspond with the both ends of guide roller axle 2 respectively, and installation axle 3 and the coaxial setting of guide roller axle 2 are provided with coupling mechanism 4 between guide roller axle 2 and the installation axle 3, and coupling mechanism 4 is used for connecting installation axle 3 on guide roller axle 2.

With reference to fig. 1 and 2, the connecting mechanism 4 includes a connecting sleeve 41 and a connecting assembly 42; the both ends of adapter sleeve 41 overlap respectively and establish on deflector roll axle 2 and installation axle 3, and coupling assembling 42 sets up on installation axle 3 in order to connect installation axle 3 and adapter sleeve 41, and coupling assembling 42 accomplishes the connection back of installation axle 3 and adapter sleeve 41, and adapter sleeve 41 restricts the radial and axial motion of deflector roll axle 2 to make deflector roll body 1, deflector roll axle 2 and installation axle 3 link together.

With reference to fig. 2 and 3, a first connection hole 411 is formed in one end of the connection sleeve 41, an end portion of the guide roller shaft 2 extends into the first connection hole 411, a side wall of the guide roller shaft 2 is attached to a side wall of the first connection hole 411, the end portion of the guide roller shaft 2 abuts against the connection sleeve 41, a limiting structure 5 for limiting relative rotation of the connection sleeve 41 and the guide roller shaft 2 is arranged between the connection sleeve 41 and the guide roller shaft 2, in the embodiment of the present application, the limiting structure 5 is a plurality of protrusions 51 and a plurality of sliding grooves 52, the plurality of protrusions 51 are arranged, the plurality of protrusions 51 are fixedly connected to the guide roller shaft 2 at intervals along the circumferential direction of the guide roller shaft 2, the sliding grooves 52 are formed in the connection sleeve 41, the plurality of sliding grooves 52 are arranged, the plurality of sliding grooves 52 correspond to the plurality of protrusions 51 one-to-one, and the protrusions 51 are matched with the sliding grooves 52, so that the connection sleeve 41 and the guide roller shaft 2 are limited to rotate relatively; the other end of the connecting sleeve 41 is provided with a second connecting hole 412, one end of the mounting shaft 3 extends into the second connecting hole 412, and the connecting assembly 42 limits the relative movement between the side wall of the mounting shaft 3 and the side wall of the second connecting hole 412 so as to realize the connection between the connecting sleeve 41 and the mounting shaft 3.

Referring to fig. 2, the end of the guide roller shaft 2 is provided with a chamfer, the chamfer at the end of the guide roller shaft 2 is attached to the connecting sleeve 41, and the coaxiality between the guide roller shaft 2 and the connecting sleeve 41 is improved under the self-centering effect of the chamfer.

Referring to fig. 2 and 4, the connecting assembly 42 includes a locking ring 421 and a pressing member 422; the locking ring 421 is coaxially sleeved on the mounting shaft 3, the locking ring 421 is provided with a notch 4211 penetrating through the inner and outer side walls and two ends of the locking ring 421, the inner side wall of the locking ring 421 is attached to the side wall of the mounting shaft 3, the outer side wall of the locking ring 421 is conical, the small end of the locking ring 421 is close to the guide roller shaft 2, and the position of the side wall of the second connecting hole 412, which corresponds to the locking ring 421, is attached to the outer side wall of the locking ring 421; the pressing member 422 is provided on the mounting shaft 3 for pressing the lock ring 421 close to the guide roller shaft 2.

When the staff uses coupling assembling 42 to connect adapter sleeve 41 and installation axle 3, establish the locking ring 421 cover on installation axle 3, then stretch into second connecting hole 412 with locking ring 421, reuse extrusion part 422 extrudes locking ring 421, the inside wall of locking ring 421 extrudes the lateral wall of installation axle 3, make the inside wall of locking ring 421 and the lateral wall of installation axle 3 link together under the effect of frictional force, the lateral wall of locking ring 421 extrudes the inside wall of second connecting hole 412, make link together under the effect of frictional force between locking ring 421 and the adapter sleeve 41, and then make installation axle 3 and adapter sleeve 41 link together.

Referring to fig. 2 and 5, the pressing member 422 includes a bearing plate 4221, a wedge 4222, and a bolt 4223; a sliding sleeve 6 is slidably sleeved on the mounting shaft 3 along the axial direction of the mounting shaft 3, and the bearing plate 4221 is fixedly connected to one side of the sliding sleeve 6 far away from the mounting shaft 3; the mounting shaft 3 is provided with a yielding hole 31, the extending direction of the yielding hole 31 is along the radial direction of the mounting shaft 3, the yielding hole 31 penetrates through the side wall of the mounting shaft 3, one side of the yielding hole 31, which is far away from the guide roller shaft 2, is obliquely arranged, and the opening of one end, close to the bearing plate 4221, of the yielding hole 31 is smaller than the opening of the other end of the yielding hole 31; the wedge 4222 wherein both sides relative all run through the hole of stepping down 31, and wedge 4222 keeps away from one side slope setting of guide roller axle 2 and with the lateral wall laminating of hole of stepping down 31, and one side that wedge 4222 is close to lock ring 421 is laminated with lock ring 421, and the free end of bolt 4223 runs through bearing plate 4221 and threaded connection on the tip of wedge 4222.

When a worker extrudes the locking ring 421 by using the extrusion component 422, the small end of the wedge 4222 extends into the abdicating hole 31 towards the bearing plate 4221, then the bearing plate 4221 corresponds to the wedge 4222, the free end of the bolt 4223 penetrates through the bearing plate 4221 and is in threaded connection with the small end of the wedge 4222, then a wrench is used for screwing the bolt 4223 to enable the wedge 4222 to be close to the bearing plate 4221, the wedge 4222 extrudes the locking ring 421 while being close to the bearing plate 4221, the bearing plate 4221 moves close to the locking ring 421, and the mounting shaft 3 and the connecting sleeve 41 are connected together; when the worker removes the leader shaft 2 from the coupling sleeve 41, the worker unscrews the bolt 4223 in the opposite direction so that the free end of the bolt 4223 and the wedge 4222 are disengaged, the wedge 4222 is released from the escape hole 31, and then pulls the coupling sleeve 41 in a direction away from the leader shaft 2, and the coupling sleeve 41 and the leader shaft 2 are disengaged.

In order to facilitate the rotation of the bolt 4223, referring to fig. 6, a rotation rod 7 is fixedly connected to the head of the bolt 4223, the axis of the rotation rod 7 is perpendicular to the axis of the bolt 4223, and a worker can directly use the rotation rod 7 to screw the bolt 4223 without using a wrench to screw the bolt 4223.

With reference to fig. 2 and 5, a limiting structure 5 is disposed between the sliding sleeve 6 and the mounting shaft 3 for limiting the relative rotation between the sliding sleeve 6 and the mounting shaft 3, in the embodiment of the present application, the limiting structure 5 includes a protrusion 51 and a sliding groove 52, the protrusion 51 is provided with one or more protrusions, preferably one protrusion, the protrusion 51 is fixedly connected to the sliding sleeve 6, the sliding groove 52 is provided on the mounting shaft 3 and cooperates with the protrusion 51 and the sliding groove 52 of the protrusion 51, so as to limit the relative rotation between the sliding sleeve 6 and the mounting shaft 3; the circumferential relative position between the bearing plate 4221 and the yielding hole 31 can be kept, the bearing plate 4221 does not need to correspond to the yielding hole 31 every time when the guide roller is used, and the installation efficiency of the guide roller is further improved.

The implementation principle of easy dismouting deflector roll of this application embodiment does: when a worker installs a new guide roller for the first time, bearings 3 are respectively installed at one end of each of the two installation shafts 3, the bearings are installed on corresponding bearing installation seats, then the sliding sleeve 6 and the locking ring 421 are sequentially installed on the installation shafts 3, then the two ends of the connecting sleeve 41 are respectively sleeved at the end part of the guide roller shaft 2 and the end part of the installation shaft 3, and then the wedge 4222 and the bolt 4223 are used for completing the extrusion of the locking ring 421, so that the connection between the connecting sleeve 41 and the installation shafts 3 is completed; when the guide roller needs to be replaced after being used for a period of time, the bolt 4223 is screwed to separate from the wedge 4222, the connecting sleeve 41 is pulled in the direction away from the guide roller shaft 2, the connecting sleeve 41 is separated from the guide roller shaft 2, and the guide roller body 1 is detached; when a new guide roller body 1 is installed again, the two ends of the connecting sleeve 41 are respectively sleeved at the end part of the guide roller shaft 2 and the end part of the installation shaft 3, and then the wedge 4222 and the bolt 4223 are used for completing the extrusion of the locking ring 421, so that the connection between the connecting sleeve 41 and the installation shaft 3 is completed; to sum up, in bearing life's cycle, installation axle 3 need not to dismantle and reinstall, the step of the dismouting that has significantly reduced for the dismouting of deflector roll is more convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an easy dismouting deflector roll, includes deflector roll body (1), its characterized in that: the device also comprises a guide roll shaft (2) and a mounting shaft (3);

the guide roller shaft (2) is coaxially and fixedly connected to the guide roller body (1), and two ends of the guide roller shaft (2) respectively extend out of two ends of the guide roller body (1);

the installation axle (3) is provided with two, two installation axle (3) respectively with the both ends of guide roller axle (2) correspond, installation axle (3) with guide roller axle (2) coaxial setting, guide roller axle (2) with be provided with between installation axle (3) and be used for connecting coupling mechanism (4) between them.

2. Easy dismounting guide roller according to claim 1, characterized in that: the connecting mechanism (4) comprises a connecting sleeve (41) and a connecting assembly (42) which is arranged on the mounting shaft (3) and used for connecting the connecting sleeve (41) to the mounting shaft (3);

a first connecting hole (411) is formed in one end of the connecting sleeve (41), the end of the guide roller shaft (2) extends into the first connecting hole (411), the side wall of the guide roller shaft (2) is attached to the side wall of the first connecting hole (411), the end of the guide roller shaft (2) abuts against the connecting sleeve (41), and a limiting structure (5) for limiting relative rotation of the connecting sleeve (41) and the guide roller shaft (2) is arranged between the connecting sleeve (41) and the guide roller shaft (2);

the other end of the connecting sleeve (41) is provided with a second connecting hole (412), and one end of the mounting shaft (3) extends into the second connecting hole (412).

3. Easy demountable guide roller according to claim 2, wherein: the connecting assembly (42) comprises a locking ring (421) and a pressing component (422) which is arranged on the mounting shaft (3) and used for pressing the locking ring (421) to be close to the guide roller shaft (2);

the locking ring (421) is coaxially sleeved on the mounting shaft (3), and the locking ring (421) is provided with openings (4211) penetrating through the inner and outer side walls and two ends of the locking ring (421);

the inside wall of lock ring (421) with the lateral wall laminating of installation axle (3), the lateral wall slope of lock ring (421) sets up just the tip of lock ring (421) is close to adapter sleeve (41), second connecting hole (412) lateral wall corresponds to the position department of lock ring (421) with the lateral wall laminating of lock ring (421).

4. Easy dismounting guide roller according to claim 3, characterized in that: the pressing component (422) comprises a bearing plate (4221), a wedge block (4222) and a bolt (4223);

the bearing plate (4221) is arranged on the mounting shaft (3) in a sliding manner along the axial direction of the mounting shaft (3);

the mounting shaft (3) is provided with a yielding hole (31), the yielding hole (31) penetrates through the side wall of the mounting shaft (3), one side, far away from the guide roller shaft (2), of the yielding hole (31) is obliquely arranged, and an opening, close to one end of the bearing plate (4221), of the yielding hole (31) is smaller than an opening at the other end of the yielding hole (31);

voussoir (4222) wherein relative both sides all run through hole (31) of stepping down, voussoir (4222) are kept away from one side slope setting of guide roller axle (2) and with the lateral wall laminating of hole (31) of stepping down, voussoir (4222) are close to one side of lock ring (421) with lock ring (421) laminating, the free end of bolt (4223) runs through loading board (4221) and threaded connection in on the tip of voussoir (4222).

5. Easy dismounting guide roller according to claim 4, characterized in that: the installation axle (3) correspond to the position department sliding connection of loading board (4221) has sliding sleeve (6), loading board (4221) fixed connection in sliding sleeve (6) keep away from one side of installation axle (3).

6. Easy dismounting guide roller according to claim 5, characterized in that: and a limiting structure (5) for limiting the relative rotation of the sliding sleeve (6) and the mounting shaft (3) is arranged between the sliding sleeve and the mounting shaft.

7. Easy dismounting guide roller according to claim 4, characterized in that: the head of the bolt (4223) is fixedly connected with a rotating rod (7), and the axis of the rotating rod (7) is intersected with the axis of the bolt (4223).

8. Easy dismounting guide roller according to claim 2, characterized in that: the tip of guide roll axle (2) is provided with the chamfer, the chamfer of guide roll axle (2) tip with adapter sleeve (41) laminating.

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