CN217775934U - Carrier roller device for auxiliary support section bar and laser cutting equipment - Google Patents

Abstract

The utility model relates to a bearing roller device and laser cutting equipment of auxiliary stay section bar, the bearing roller device of auxiliary stay section bar includes a plurality of bearing roller mechanisms. The carrier roller mechanism comprises a carrier roller frame, a driving assembly and a roller wheel. The roller carrier is rotationally connected with a lathe bed of the laser cutting equipment, the driving assembly is arranged on the lathe bed, and the driving assembly is connected with the roller carrier to drive the roller carrier to rotate. The roller wheel is rotatably connected with the roller carrier, a rotating shaft of the roller wheel is parallel to that of the roller carrier, and a groove is formed in the outer wall of the roller wheel. The carrier roller mechanisms are reasonably arranged in the lathe bed, so that the swing amplitude of the pipe rotating can be effectively restrained, and the cutting precision and stability of the pipe are improved; simultaneously, the roller mechanism overturns and swings in a certain interval, the action response is fast, the idle time of cutting processing is reduced, the running speed of equipment is accelerated, and the cutting efficiency is improved.

Description

Carrier roller device for auxiliary support section bar and laser cutting equipment

Technical Field

The utility model relates to a section bar cutting technical field especially relates to a bearing roller device and laser cutting equipment of auxiliary stay section bar.

Background

When the laser tube cutting machine is used for cutting and machining, the tube, especially a non-circular tube, can deflect to different degrees when rotating, so that the cutting precision is reduced, the cutting efficiency is seriously influenced, and even the cutting equipment can be damaged if the deflection is too large. Furthermore, in the procedure, the mounting seat bottom plate of the rear chuck and the carrier roller device are in a chain design, and the rear chuck can rapidly move and pass through along with the mounting seat bottom plate when the carrier roller falls down. The speed of the action response of the carrier roller becomes a bottleneck limiting the displacement speed of the rear chuck and even the cutting and processing efficiency of the whole machine.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a roller device for auxiliary support of a profile and a laser cutting apparatus, which solves the technical problems of deflection caused by non-circular tube rotation and slow response of roller action.

(II) technical scheme

In order to achieve the above object, the utility model discloses a roller device of auxiliary stay section bar includes:

a plurality of idler mechanisms;

the carrier roller mechanism comprises a carrier roller frame, a driving assembly and a roller;

the roller carrier is rotationally connected with a lathe bed of laser cutting equipment, the driving assembly is arranged on the lathe bed, and the driving assembly is connected with the roller carrier to drive the roller carrier to rotate;

the roller is rotationally connected with the roller carrier, a rotating shaft of the roller is parallel to that of the roller carrier, and a groove is formed in the outer wall of the roller.

Optionally, the groove encircles the outer wall of the roller from the starting point to the end point; from the starting point to the end point of the groove, the depth and the width of the groove are gradually increased, and the starting point and the end point of the groove are overlapped;

the inner wall and the groove bottom of the groove are both cambered surfaces.

Optionally, the carrier roller mechanism further comprises a base, the base is detachably arranged on the bed body, the carrier roller frame is rotatably connected with the base, and the driving assembly is arranged on the base.

Optionally, the roller frame comprises a supporting frame and a mounting frame which are connected with each other;

the support frame is rotatably arranged on the base through a rotating shaft and can be abutted against the base;

the roller wheels are rotatably arranged on the mounting rack through roller wheel shafts, and the central axes of the roller wheel shafts are parallel to the central axis of the rotating shaft;

the driving assembly is connected with the supporting frame.

Optionally, the driving assembly includes a cylinder, a first mounting seat, a second mounting seat, and a third mounting seat;

the first mounting seat and the second mounting seat are oppositely arranged on the base, and the third mounting seat is arranged on the supporting frame;

the first mounting seat and the second mounting seat are both rotationally connected with a cylinder body of the air cylinder, and the third mounting seat is rotationally connected with the end part of a piston rod of the air cylinder;

the rotation axes of the cylinder body and the piston rod of the air cylinder are parallel to the central axis of the roller shaft.

Optionally, the roller frame comprises a first state and a second state;

in the first state, the support frame is abutted against the base, and the roller is positioned above the lathe bed and used for supporting the section to be cut;

in the second state, the support frame is abutted against the lathe bed, and the roller is positioned in the lathe bed;

the idler frame is switchable between a first state and a second state under drive of the drive assembly.

Optionally, a first buffer member is arranged on the base, and a second buffer member is arranged on the bed body;

when the roller carrier is in a first state, the first buffer piece is overlapped between the support frame and the base, and when the roller carrier is in a second state, the second buffer piece is overlapped between the support frame and the lathe bed.

Optionally, the carrier roller mechanism further comprises a limiting assembly, wherein the limiting assembly comprises a limiting disc, a limiting block and a plurality of positioning bolts;

the limiting disc is coaxially connected with the roller, a plurality of positioning holes are uniformly formed in the limiting disc, and the distance between the central axis of each positioning hole and the rotating shaft of the roller is equal;

the limiting block is arranged on the roller carrier, the plurality of positioning bolts are in threaded connection with the limiting block, and the plurality of positioning bolts can be in one-to-one corresponding connection with the plurality of positioning holes.

Optionally, evenly be provided with a plurality of angle reference numbers on the spacing dish, the observation window has been seted up on the stopper, can make when spacing dish is rotatory a plurality of the angle reference number is located in proper order in the observation window.

Further, the utility model also provides a laser cutting equipment, laser cutting equipment includes the lathe bed, slide the chuck mechanism that sets up on the lathe bed and as above the roller device of auxiliary stay section bar;

the lathe body is oppositely provided with a first guide rail and a second guide rail, the chuck mechanism is arranged on the first guide rail and the second guide rail in a sliding manner, and the chuck mechanism can drive the section bar to rotate;

the carrier roller mechanisms are arranged on the lathe bed at intervals along a straight line, the carrier roller mechanisms are positioned between the first guide rail and the second guide rail, and a rotating shaft of the carrier roller frame is perpendicular to the first guide rail.

(III) advantageous effects

The carrier roller frame overturns and swings in a certain interval, when the chuck mechanism moves on the lathe bed, the carrier roller frame falls down, and the chuck mechanism can move and pass through; when the chuck mechanism drives the section bar to rotate to cut the section bar, the roller frame is lifted up to support the section bar in an auxiliary way.

The running roller rotates with the bearing roller frame to be connected, and the rotation axis of running roller is parallel with the rotation axis of bearing roller frame, has seted up the slot on the outer wall of running roller. The cutting device is placed in the groove during cutting of the section bar, and can effectively prevent the section bars such as rectangular pipes, square pipes, channel steel, angle steel and the like from swinging during rotation.

The carrier roller mechanisms are reasonably arranged in the lathe bed, so that the swing amplitude of the pipe rotating can be effectively restrained, and the cutting precision and stability of the pipe are improved; meanwhile, the carrier roller mechanism overturns and swings in a certain interval, the action response is fast, the spare time of cutting processing is reduced, the running speed of the equipment is accelerated, and the cutting efficiency is improved.

Drawings

Fig. 1 is a top view of a carrier roller device for auxiliary support section bars according to the present invention;

fig. 2 is a schematic structural view of a carrier roller mechanism of a carrier roller device for auxiliary support of a profile according to the present invention;

fig. 3 is a front view of the carrier roller device of the auxiliary support section bar of the present invention;

fig. 4 is a schematic structural diagram of a limiting component of the carrier roller device for auxiliary support section bar of the present invention.

[ description of reference ]

100: a bed body;

1: a carrier roller mechanism;

11: a carrier roller frame; 111: a support frame; 112: a mounting frame; 113: a rotating shaft;

12: a roller; 120: a trench; 121: a roller shaft;

13: a base; 131: a first buffer member;

141: a cylinder; 142: a first mounting seat; 143: a second mounting seat; 144: a third mounting seat;

2: a chuck mechanism;

31: a limiting disc; 32: a limiting block; 33: positioning a bolt; 34: positioning holes; 35: angle labels; 36: an observation window;

41: a first guide rail; 42: a second guide rail.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. Where directional terms such as "upper", "lower", etc. are used herein, reference is made to the orientation of fig. 1.

While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1, the utility model provides a bearing roller device of auxiliary stay section bar, it includes a plurality of bearing roller mechanisms 1, and a plurality of bearing roller mechanisms 1 are installed on the lathe bed 100 of laser cutting equipment along sharp interval, carry out auxiliary stay to the section bar, improve the stability of cutting. As shown in fig. 2, the idler mechanism 1 includes an idler frame 11, a driving assembly, and a roller 12. The carrier roller frame 11 is rotatably connected with the lathe bed 100, the driving assembly is connected with the lathe bed 100, and the driving assembly is connected with the carrier roller frame 11 to drive the carrier roller frame 11 to turn and swing within a certain interval. When the chuck mechanism 2 of the laser cutting equipment moves on the lathe bed 100, the roller frame 11 falls down, and the chuck mechanism 2 can move through; when the chuck mechanism 2 drives the section bar to rotate to cut the section bar, the roller frame 11 is lifted to support the section bar in an auxiliary way. The roller 12 is rotatably connected with the roller holder 11, a rotating shaft of the roller 12 is parallel to a rotating shaft of the roller holder 11, and a groove 120 is formed in the outer wall of the roller 12. The cutting section is placed in the groove 120 during cutting, so that the swinging of the sections such as rectangular pipes, square pipes, channel steels and angle steels during rotation can be effectively prevented. The carrier roller mechanism 1 is reasonably arranged in the lathe bed 100, so that the swing amplitude of the pipe rotating can be effectively restrained, and the cutting precision and stability of the pipe are improved; meanwhile, the carrier roller mechanism 1 overturns and swings in a certain interval, the action response is fast, the idle time of cutting processing is reduced, the running speed of equipment is accelerated, and the cutting efficiency is improved.

As shown in fig. 2, the groove 120 surrounds the outer wall of the roller 12 for one circle, the symmetry plane of the groove 120 is perpendicular to the rotation axis of the roller 12, and the distance from the symmetry plane of the groove 120 to the two ends of the roller is equal. Taking the end of the groove bottom 120 farthest from the center point of the roller 12 as the starting point of the groove 120, that is, the end of the groove 120 with the smallest depth as the starting point, and the end of the groove 120 with the largest depth as the end point, the groove 120 surrounds the outer wall of the roller 12 from the starting point to the end point by a circle; from the start point to the end point of the trench 120, the depth and width of the trench 120 gradually increase, and the start point and the end point of the trench 120 coincide. The inner wall and the bottom of the groove 120 are both smooth cambered surfaces so that the profile can rotate in the groove 120. Specifically, the groove 120 is designed by adopting the profile of a deepened roller 12, a plurality of specifications are arranged in the supporting range of the roller 12 from small to large, each specification corresponds to the profile of the groove 120, the cutting of each profile is gradually deepened from small to large, the dimension of each stretch-cut profile is in an A-shaped key strip shape, a certain angle is formed between every two profile section reference surfaces, the full stroke is planned, each profile is clearly visible, each profile can be ensured to be in a proper section profile, the swinging of profiles such as rectangular pipes, square pipes, channel steel, angle steel and the like during rotation can be effectively prevented, the universality is strong, the range of applicable profiles and specifications is wide, the roller 12 is made of wear-resistant non-metal materials, the machinability is good, and the batch manufacturing is convenient. In addition, through this design, when the tubular product of different pipe diameters is fed, the axis of tubular product all with chuck axis collineation, can reduce the adjustment work of chuck centre gripping when material loading and cutting, raise the efficiency, also can avoid tubular product whipping when rotatory.

As shown in fig. 2, the idler mechanism 1 further includes a base 13, the base 13 is detachably disposed on the bed 100, the idler frame 11 is rotatably connected to the base 13, and the driving assembly is disposed on the base 13. Wherein the carrier roller frame 11 comprises a support frame 111 and a mounting frame 112 connected to each other. The lower end of the supporting frame 111 is rotatably disposed on the base 13 through the rotating shaft 113, so that the supporting frame 111 can swing conveniently, and the supporting frame 111 can be abutted to the base 13. The roller 12 is rotatably disposed on the mounting frame 112 through a roller shaft 121, a central axis of the roller shaft 121 is parallel to a central axis of the rotating shaft 113, and the profile is axially perpendicular to the central axis of the roller shaft 121 during the cutting process. The driving assembly is connected to the supporting frame 111, and the roller frame 11 includes a first state and a second state under the driving of the driving assembly. The first state is that the supporting frame 111 is abutted against the base 13, and the roller 12 is located above the lathe bed 100 and used for assisting in supporting the section bar arranged on the chuck mechanism 2 and preventing the section bar from swinging in the rotary cutting process. As shown in fig. 3, in the second state, the support frame 111 abuts against the bed 100, the roller 12 is located inside the bed 100, and the chuck mechanism 2 is not blocked by the roller 12 during the moving process, so that the chuck mechanism 2 can normally operate. The carrier roller frame 11 is switchable between a first state and a second state by the driving of the driving assembly.

Specifically, the driving assembly includes a cylinder 141, a first mount 142, a second mount 143, and a third mount 144. The first mounting seat 142 and the second mounting seat 143 are disposed on the base 13, and the third mounting seat 144 is disposed on the supporting frame 111. The first mounting seat 142 and the second mounting seat 143 are both rotatably connected to the cylinder body of the air cylinder 141, and the third mounting seat 144 is rotatably connected to the end of the piston rod of the air cylinder 141. The cylinder body of the cylinder 141 and the rotation axis of the piston rod are parallel to the central axis of the roller shaft 121. The piston rod of the cylinder 141 retracts and extends to two limit positions respectively corresponding to a first state and a second state of the carrier roller frame 11, wherein the first state is that the carrier roller frame 11 swings up, and the second state is that the carrier roller frame 11 falls down. The lever principle is applied to the structure of the carrier roller frame 11 and the air cylinder 141, the force of the air cylinder 141 with a smaller lever diameter is enough, the response speed of the small-specification air cylinder 141 is high, and when a piston rod of the air cylinder 141 pushes out a little stroke slightly, the carrier roller frame 11 falls down quickly under the double assistance of the thrust of the air cylinder 141 and the gravity of the carrier roller frame, so that the falling speed of the carrier roller frame 11 is effectively improved, the corresponding speed of the carrier roller mechanism 1 is improved, the action response of the carrier roller mechanism 1 is high, the displacement speed of a rear chuck is also improved, the idle time of cutting is shortened, and the cutting efficiency is improved. Of course, the actuating speed of the cylinder 141 can also be adjusted by the air passage speed regulating valve.

Preferably, the base 13 is provided with a first buffer member 131, and when the roller frame 11 is in the first state, the first buffer member 131 is stacked between the supporting frame 111 and the base 13. The bed 100 is provided with a second buffer member, and when the carrier roller frame 11 is in the second state, the second buffer member is overlapped between the support frame 111 and the bed 100. Both limit positions in the first state and the second state are provided with limit buffers to protect the air cylinder 141, prolong the service life of the air cylinder 141, effectively reduce the noise generated when the roller frame 11 swings, and optimize the production environment.

As shown in fig. 4, the carrier roller mechanism 1 further includes a limiting assembly, wherein the limiting assembly includes a limiting disc 31, a limiting block 32 and a plurality of positioning bolts 33. Spacing dish 31 fixed mounting is on the terminal surface of running roller 12 to spacing dish 31 and running roller 12 coaxial coupling, spacing dish 31 is along with running roller 12 synchronous revolution. A plurality of positioning holes 34 are uniformly formed in the limiting disc 31 along the circumferential direction of the limiting disc 31, and the distance between the central axis of each positioning hole 34 and the rotating shaft of the roller 12 is equal. The limiting block 32 is fixedly installed on the roller frame 11, and the plurality of positioning bolts 33 are in threaded connection with the limiting block 32. Specifically, a plurality of thread through holes are formed in the limiting block 32, and the plurality of positioning bolts 33 are in one-to-one corresponding threaded connection with the plurality of thread through holes. The utility model provides a positioning bolt 33 is preferred two, and two positioning bolt 33 can be connected with two locating hole 34 one-to-ones. The operation process is as follows: after the roller frame 11 is lifted, the roller 12 is rotated to a set position, the set position is a groove 120 with a matched width selected according to the specification of the profile, and the width of the selected groove 120 is required to ensure that the profile can just rotate in the groove 120 without swinging and contacting the inner wall and the bottom of the groove 120. The positioning bolt 33 is rotated clockwise into the threaded through hole until the positioning bolt 33 is inserted into the corresponding positioning hole 34. The limiting disc 31 is limited by the positioning bolts 33 and cannot rotate, the limiting disc 31 is fixed, so that the roller 12 is fixed, and the roller 12 plays a role in stably supporting and preventing the profile from swinging.

As shown in fig. 4, a plurality of angle marks 35 are uniformly arranged on the limiting disc 31 along the circumference of the limiting disc 31, an observation window 36 is formed on the limiting block 32, and the plurality of angle marks 35 can be sequentially located in the observation window 36 when the limiting disc 31 rotates. The zero-value scale line of the angle indicator 35 corresponds to the start point of the groove 120, and the angle of the roller 12 rotating from the start point to the end point of the groove 120 can be known by reading the value of the angle indicator 35 in the observation window 36. Further, the position of the corresponding groove 120 can be quickly selected according to the depth, width and the like of the marking groove 120 corresponding to each angle mark 35 through the specification of the profile.

As shown in fig. 1, the utility model also provides a laser cutting equipment, it includes lathe bed 100, slides and sets up chuck mechanism 2 on lathe bed 100 and a plurality of roller mechanism 1 that set up on lathe bed 100 along the sharp interval. The chuck mechanism 2 comprises a chuck and a motor, the chuck is a conventional lathe chuck, the motor is in transmission connection with the chuck to drive the chuck to rotate, the motor is connected with a controller through a wire, and the wire is installed in a drag chain. Chuck mechanism 2 is used for driving the section bar rotation, cooperates corresponding cutting equipment to cut the section bar, and the section bar includes rectangular pipe, square pipe, channel-section steel, angle steel and so on. The bed 100 is provided with a first guide rail 41 and a second guide rail 42, and the chuck mechanism 2 is slidably provided on the first guide rail 41 and the second guide rail 42. During the profile cutting process and the loading process of the chuck mechanism 2, the chuck mechanism 2 slides along the first guide rail 41 and the second guide rail 42. The carrier roller mechanism 1 is positioned between the first guide rail 41 and the second guide rail 42, the rotating shaft of the carrier roller frame 11 is perpendicular to the first guide rail 41, and in the cutting process of the section bar, the section bar is supported by the rollers 12 positioned between the first guide rail 41 and the second guide rail 42 in an auxiliary mode.

The carrier roller frame 11 overturns and swings in a certain interval, when the chuck mechanism 2 moves on the lathe bed 100, the carrier roller frame 11 falls down, and the chuck mechanism 2 can move through; when the chuck mechanism 2 drives the section bar to rotate to cut the section bar, the roller frame 11 is lifted to support the section bar in an auxiliary way. The roller 12 is rotatably connected with the roller frame 11, a rotating shaft of the roller 12 is parallel to a rotating shaft of the roller frame 11, and a groove 120 is formed in the outer wall of the roller 12. The cutting section is placed in the groove 120 during cutting, so that the swinging of the sections such as rectangular pipes, square pipes, channel steels and angle steels during rotation can be effectively prevented. The carrier roller mechanism 1 is reasonably arranged in the lathe bed 100, so that the swing amplitude of the pipe rotating can be effectively restrained, and the cutting precision and stability of the pipe are improved; meanwhile, the lever principle is applied to the structure of the carrier roller frame 11 and the air cylinder 141, the carrier roller mechanism 1 overturns and swings in a certain interval, the action response is fast, the idle time of cutting processing is reduced, the running speed of equipment is accelerated, and the cutting efficiency is improved.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. The carrier roller device for the auxiliary support section is characterized by comprising a plurality of carrier roller mechanisms (1);

the carrier roller mechanism (1) comprises a carrier roller frame (11), a driving assembly and a roller (12);

the carrier roller frame (11) is rotatably connected with a lathe bed (100) of laser cutting equipment, the driving assembly is arranged on the lathe bed (100), and the driving assembly is connected with the carrier roller frame (11) to drive the carrier roller frame (11) to rotate;

the roller (12) is rotatably connected with the roller carrier (11), a rotating shaft of the roller (12) is parallel to that of the roller carrier (11), and a groove (120) is formed in the outer wall of the roller (12).

2. A idler assembly as claimed in claim 1 wherein said channel (120) runs around the outer wall of said roller (12) from start to finish; from the starting point to the end point of the groove (120), the depth and the width of the groove (120) are gradually increased, and the starting point and the end point of the groove (120) are coincided;

the inner wall and the groove bottom of the groove (120) are both cambered surfaces.

3. A idler unit according to claim 1 or claim 2, wherein the idler mechanism (1) further includes a base (13), the base (13) being detachably mounted on the bed (100), the idler cradle (11) being rotatably connected to the base (13), and the drive assembly being mounted on the base (13).

4. A idler unit as claimed in claim 3, wherein said idler frame (11) includes interconnecting support frame (111) and mounting frame (112);

the support frame (111) is rotatably arranged on the base (13) through a rotating shaft (113), and the support frame (111) can be abutted against the base (13);

the roller (12) is rotatably arranged on the mounting frame (112) through a roller shaft (121), and the central axis of the roller shaft (121) is parallel to the central axis of the rotating shaft (113);

the driving component is connected with the supporting frame (111).

5. An idler unit as claimed in claim 4 wherein said drive assembly includes a cylinder (141), a first mounting seat (142), a second mounting seat (143) and a third mounting seat (144);

the first mounting seat (142) and the second mounting seat (143) are oppositely arranged on the base (13), and the third mounting seat (144) is arranged on the supporting frame (111);

the first mounting seat (142) and the second mounting seat (143) are rotatably connected with a cylinder body of the air cylinder (141), and the third mounting seat (144) is rotatably connected with an end part of a piston rod of the air cylinder (141);

the rotation axes of the cylinder body and the piston rod of the air cylinder (141) are parallel to the central axis of the roller shaft (121).

6. A idler unit as claimed in claim 4, wherein said idler housing (11) includes a first condition and a second condition;

in the first state, the supporting frame (111) abuts against the base (13), and the roller (12) is located above the lathe bed (100) and used for supporting the section to be cut;

in the second state, the supporting frame (111) is abutted to the lathe bed (100), and the roller (12) is positioned in the lathe bed (100);

the roller frame (11) can be switched between a first state and a second state under the driving of the driving assembly.

7. A roller device of auxiliary support section bar as claimed in claim 6, characterized in that a first buffer member (131) is provided on the base (13), and a second buffer member is provided on the bed (100);

when bearing roller frame (11) is in first state, first bolster (131) overlap in support frame (111) with between base (13), when bearing roller frame (11) is in the second state, second bolster superpose support frame (111) with between lathe bed (100).

8. A roller device for auxiliary support of section bar according to claim 1 or 2, characterized in that the roller mechanism (1) further comprises a limiting component, the limiting component comprises a limiting disc (31), a limiting block (32) and a plurality of positioning bolts (33);

the limiting disc (31) is coaxially connected with the roller (12), a plurality of positioning holes (34) are uniformly formed in the limiting disc (31), and the distance between the central axis of each positioning hole (34) and the rotating shaft of the roller (12) is equal;

the limiting block (32) is arranged on the roller frame (11), the positioning bolts (33) are in threaded connection with the limiting block (32), and the positioning bolts (33) can be in one-to-one corresponding connection with the positioning holes (34).

9. A roller device for auxiliary support sections as claimed in claim 8, wherein a plurality of angle marks (35) are uniformly arranged on the limiting disc (31), an observation window (36) is formed on the limiting block (32), and the plurality of angle marks (35) can be sequentially positioned in the observation window (36) when the limiting disc (31) rotates.

10. A laser cutting apparatus, characterized in that the laser cutting apparatus comprises a bed (100), a chuck mechanism (2) slidably arranged on the bed (100) and a roller device for auxiliary support of profile according to any one of claims 1-9;

a first guide rail (41) and a second guide rail (42) are oppositely arranged on the lathe bed (100), the chuck mechanism (2) is arranged on the first guide rail (41) and the second guide rail (42) in a sliding mode, and the chuck mechanism (2) can drive the section bar to rotate;

the carrier roller mechanisms (1) are arranged on the bed body (100) at intervals along a straight line, the carrier roller mechanisms (1) are positioned between the first guide rail (41) and the second guide rail (42), and a rotating shaft of the carrier roller frame (11) is perpendicular to the first guide rail (41).

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