CN213436644U - Roll forming device - Google Patents

Abstract

A roll forming apparatus comprising: the front frame sequentially passes through the first-section rolling assembly, the second-section rolling assembly and the third-section rolling assembly. One section roll-in subassembly includes a plurality of fold-in running roller group, and in a fold-in running roller group, fold-in running roller group is including the roll-in running roller of fold-in and roll-in running roller down. The two-section rolling assembly is used for bending two ends of the front frame material. The three-section rolling assembly comprises a plurality of flattening roller sets, and in one flattening roller set, each flattening roller set comprises a flattening upper roller, a flattening lower roller, a first roller and a second roller. Through setting up a plurality of rollers group of rolling over, can progressively bend to the middle part of preceding frame material, rethread two-stage section roll-in subassembly is buckled to the both ends of preceding frame material, sets up a plurality of rollers group that flatten, progressively carries out the shaping of flattening at last to the both ends of preceding frame material, divides the three-section to progressively buckle the shaping to preceding frame material in proper order, forms complicated structure of buckling, and the shaping is effectual.

Description

Roll forming device

Technical Field

The utility model relates to a roll forming technology field especially relates to a roll forming device.

Background

The television is a household appliance which can bring fun to people's amateur life, the basic system of the television generally comprises three parts of camera shooting, transmission and image display, thereby realizing the function of video playing, along with the improvement of the living standard of people and the improvement of the modernization level, the television becomes a household appliance basically possessed by each household, thereby bringing joy to people and enriching the life of people, the front frame of the television is an important part of the television, the front frame of the television is arranged around the television screen, can play a role in supporting and protecting, can protect the edge of the television screen, and avoids the television from being damaged by impact in the transportation or carrying process, thereby obtaining a television finished product with more stable structure.

However, as the requirements of people on the functions and the quality of the television set are higher and higher, the structure of the television set is also more and more complex, as the design of the whole television set is more and more complex, and as the design requirements of the whole television set are met, the shape design requirements of a front frame material for preparing a front frame of the television set are also higher and more complex, the shape design requirements of the front frame material cannot be met by the traditional aluminum extrusion process plus CNC (computer numerical control) processing and the die sinking stamping process, wherein the die sinking stamping is generally to design a grinding tool with a specific shape and perform one-step stamping forming, and as the impact force is larger, the obtained front frame material finished product is easy to break, the quality of the finished product is not high, and the yield is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing an easily shaping, can form the roll forming device of complex construction, adopt three-section roll-in subassembly to carry out the shaping of progressively buckling to preceding frame material, the shaping is effectual, and the finished product yields is high.

The purpose of the utility model is realized through the following technical scheme:

a roll forming apparatus comprising: the front frame material sequentially passes through the first-section rolling assembly, the second-section rolling assembly and the third-section rolling assembly;

the first-section rolling assembly comprises a plurality of pressing and folding roller wheel sets, and in one pressing and folding roller wheel set, the pressing and folding roller wheel set comprises an upper pressing and folding roller wheel and a lower pressing and folding roller wheel, the upper pressing and folding roller wheel and the lower pressing and folding roller wheel are rotatably arranged on the mounting frame, the upper pressing and folding roller wheel is provided with a first protruding part, the lower pressing and folding roller wheel is provided with a first groove, a first bending gap is formed between the first groove and the first protruding part, and the first bending gap is used for enabling a front frame material to pass through and bending the middle part of the front frame material;

the two-section rolling assembly is used for bending two ends of the front frame material so as to enable the two ends of the front frame material to form a bending structure;

the three-section rolling assembly comprises a plurality of flattening roller sets, one of the flattening roller sets is arranged in the mounting frame, each flattening roller set comprises an upper flattening roller, a lower flattening roller, a first roller and a second roller, the upper flattening roller and the lower flattening roller are rotatably arranged on the mounting frame, the first roller is rotatably arranged on one side of the upper flattening roller and the lower flattening roller, and the second roller is rotatably arranged on the other side of the upper flattening roller and the lower flattening roller.

In one embodiment, the two-segment rolling assembly comprises a first bending upper roller and a first bending lower roller, the first bending upper roller is provided with a second protrusion, the second protrusion is provided with a first inclined surface and a second inclined surface, the first bending lower roller is provided with a second groove, the second groove is matched with the second protrusion, a second bending gap is formed between the second groove and the second protrusion, and the second bending gap is used for enabling the front frame material to pass through and enabling two ends of the front frame material to be bent.

In one embodiment, the two-stage rolling assembly further includes a second bending upper roller and a second bending lower roller, the second bending upper roller is provided with a third protrusion, the third protrusion has a third inclined surface, the second bending lower roller is provided with a third groove, the third groove is matched with the third protrusion, a third bending gap is formed between the third groove and the third protrusion, and the third bending gap is used for allowing the front frame material to pass through and bending two ends of the front frame material.

In one embodiment, the two-stage rolling assembly further comprises a third bending upper roller and a third bending lower roller, the third bending upper roller is provided with a fourth protrusion, the fourth protrusion has a fourth inclined surface, the fourth protrusion has a bending groove, the third bending lower roller has a fourth groove, the fourth groove is matched with the fourth protrusion, a fourth bending gap is formed between the fourth groove and the fourth protrusion, and the fourth bending gap is used for enabling the front frame material to pass through and bending two ends of the front frame material.

In one embodiment, the two-stage rolling assembly further includes a fourth bending upper roller and a fourth bending lower roller, the fourth bending upper roller is provided with a fifth protrusion, the fifth protrusion has a fifth slope, the fourth bending lower roller is provided with a fifth groove, the fifth groove is matched with the fifth protrusion, a fifth bending gap is formed between the fifth groove and the fifth protrusion, and the fifth bending gap is used for allowing the front frame material to pass through and bending two ends of the front frame material.

In one embodiment, the two-stage rolling assembly further includes a fifth bending upper roller and a fifth bending lower roller, the fifth bending upper roller is provided with a sixth protrusion, the sixth protrusion has a sixth inclined surface and a seventh inclined surface, the fifth bending lower roller is provided with a sixth groove, the sixth groove is matched with the sixth protrusion, a sixth bending gap is formed between the sixth groove and the sixth protrusion, and the sixth bending gap is used for allowing the front frame material to pass through and bending two ends of the front frame material.

In one embodiment, the set of creasing rollers is provided with five.

In one embodiment, the flattening roller set is provided with three.

In one of the embodiments, the mounting frame is provided with an anti-adhesive coating.

In one embodiment, the release coating is a polytetrafluoroethylene coating.

Compared with the prior art, the utility model discloses at least, following advantage has:

the utility model discloses a set up a plurality of folding roller group, can progressively bend to the middle part of preceding frame material, buckle into the shape that needs at the middle part of preceding frame material, progressively shaping, then two-stage passage roll-in subassembly, buckle to the both ends of preceding frame material, make the both ends of preceding frame material form certain bending mechanism, finally, through setting up a plurality of roller group that flatten, that is to say, set up a plurality of first gyro wheels and a plurality of second gyro wheels, can progressively carry out the last shaping of flattening to the both ends through flattening the last running roller and flattening the preceding frame material between the running roller down, this roll forming device divides the middle part of three-section preceding frame material in proper order, the shaping of progressively buckling is carried out at both ends, can form complicated bending structure, the shaping is effectual, the finished product yields is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a roll forming apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a segment of a roll assembly of the roll-forming apparatus shown in FIG. 1;

FIG. 3 is a schematic view of the first upper and lower rolls of the roll forming apparatus shown in FIG. 1;

FIG. 4 is a schematic view of the second bending upper roll and the second bending lower roll of the roll forming apparatus shown in FIG. 1;

FIG. 5 is a schematic view of the third bending upper roll and the third bending lower roll of the roll forming apparatus shown in FIG. 1;

FIG. 6 is a schematic structural view of a fourth bending upper roller and a fourth bending lower roller of the roll forming apparatus shown in FIG. 1;

FIG. 7 is a schematic structural view of a fifth bending upper roll and a fifth bending lower roll of the roll forming apparatus shown in FIG. 1;

fig. 8 is a schematic structural view of a three-stage rolling assembly of the roll forming apparatus shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It is noted that as used herein, reference to an element being "connected" to another element also means that the element is "in communication" with the other element, and fluid can be in exchange communication between the two.

Referring to fig. 1, a roll forming apparatus 10 includes: the frame material comprises a mounting frame 100, a first-stage rolling assembly 200, a second-stage rolling assembly 300 and a third-stage rolling assembly 400, wherein the first-stage rolling assembly 200, the second-stage rolling assembly 300 and the third-stage rolling assembly 400 are respectively and rotatably arranged on the mounting frame 100, and a front frame material 60 sequentially passes through the first-stage rolling assembly 200, the second-stage rolling assembly 300 and the third-stage rolling assembly 400.

It should be noted that, the front frame 60 sequentially passes through the first-stage rolling assembly 200, the second-stage rolling assembly 300 and the third-stage rolling assembly 400, and the middle and two ends of the front frame 60 are sequentially bent and formed step by step in three stages, so that a complex bending structure can be formed, the forming effect is good, and the yield of finished products is high.

Referring to fig. 1 and 2, the first-stage rolling assembly 200 includes a plurality of folding roller sets 210, in one of the folding roller sets 210, the folding roller set 210 includes an upper folding roller 211 and a lower folding roller 212, the upper folding roller 211 and the lower folding roller 212 are rotatably disposed on the mounting frame 100, the upper folding roller 211 is provided with a first protrusion 211a, the lower folding roller 212 is provided with a first groove 212a, a first bending gap is formed between the first groove 212a and the first protrusion 211a, and the first bending gap is used for allowing the front frame 60 to pass through and bending the middle of the front frame 60.

It should be noted that a plurality of folding roller sets 210 are uniformly arranged on the mounting frame 100 at intervals, each folding roller set 210 comprises a folding upper roller 211 and a folding lower roller 212, the folding upper roller 211 and the folding lower roller 212 are arranged at intervals up and down, a first protrusion 211a is arranged on the folding upper roller 211, the folding lower roller 212 is provided with a first groove 212a matched with the shape of the first protrusion 211a, the front frame 60 enters the gap between the folding upper roller 211 and the folding lower roller 212 under the pushing of the rotating folding upper roller 211 and the folding lower roller 212, and meanwhile, the front frame 60 is bent through the first bending gap formed between the first protrusion 211a and the first groove 212a, and the folding roller sets 210 are provided in plurality, that is, the folding upper roller 211 and the folding lower roller 212 are provided, the length of the first protruding part 211a of the two adjacent folding upper rollers 211 is gradually increased, and the depth of the first groove 212a of the two adjacent folding lower rollers 212 is also gradually increased, so that the middle part of the front frame 60 can be gradually bent, the front frame 60 is prevented from being damaged due to too large bending force, and the quality of the front frame 60 is improved.

The two-stage rolling assembly 300 is used for bending two ends of the front frame material 60, so that the two ends of the front frame material 60 form a bending structure.

It should be noted that the two-stage rolling assembly 300 is used for bending two ends of the front frame 60, so that the two ends of the front frame 60 form a certain bending structure, thereby meeting the shape design requirement of the front frame 60.

Specifically, referring to fig. 3, the two-stage rolling assembly 300 includes a first bending upper roller 310 and a first bending lower roller 320, the first bending upper roller 310 is provided with a second protrusion 311, the second protrusion 311 has a first inclined surface and a second inclined surface, the first bending lower roller 320 is provided with a second groove 321, the second groove 321 is adapted to the second protrusion 311, a second bending gap is formed between the second groove 321 and the second protrusion 311, and the second bending gap is used for allowing the front frame 60 to pass through and bending two ends of the front frame 60. It can be understood that, the first upper roll 310 and the first lower roll 320 are rotated and arranged on the mounting rack 100, the first upper roll 310 and the first lower roll 320 are arranged at an upper and lower interval, the second protrusion 311 is arranged on the first upper roll 310, two sides of the second protrusion 311 are respectively provided with a first inclined surface and a second inclined surface, the first lower roll 320 is provided with a second groove 321 matched with the shape of the second protrusion 311, the front frame 60 is pushed by the first upper roll 310 and the first lower roll 320, and a second bending gap is formed between the second protrusion 311 and the second groove 321, so as to bend the first end and the second end of the front frame 60, the first end and the second end of the front frame 60 are arranged relatively, and the bending structure is formed.

Further, referring to fig. 4, the two-stage rolling assembly 300 further includes a second bending upper roller 330 and a second bending lower roller 340, the second bending upper roller 330 is provided with a third protrusion 331, the third protrusion 331 has a third inclined surface, the second bending lower roller 340 is provided with a third groove 341, the third groove 341 is adapted to the third protrusion 331, a third bending gap is formed between the third groove 341 and the third protrusion 331, and the third bending gap is used for allowing the front frame 60 to pass through and bending two ends of the front frame 60. It can be understood that, by further providing the second bending upper roller 330 and the second bending lower roller 340, the second bending upper roller 330 and the second bending lower roller 340 are rotatably disposed on the mounting block 100, the second bending upper roller 330 and the second bending lower roller 340 are disposed at an interval from top to bottom, by providing the second bending upper roller 330 with the third protrusion 331, one side of the third protrusion 331 is provided with the third inclined surface, and the other side is kept horizontal, and the second bending lower roller 340 is provided with the third groove 341 having a shape adapted to the third protrusion 331, the front frame 60 is pushed by the rotating second bending upper roller 330 and the second bending lower roller 340, and passes through the third bending gap formed between the third protrusion 331 and the third groove 341, thereby bending both ends of the front frame 60, because one side of the third protrusion 331 is provided with the third inclined surface, and the other side is kept horizontal, therefore, the first end of the front frame material 60 can be further bent, and the second end of the front frame material 60 can be bent by 90 degrees, so that the front frame material 60 with different bending structures at the two ends is obtained, and further bending is realized.

Further, referring to fig. 5, the two-stage rolling assembly 300 further includes a third bending upper roller 350 and a third bending lower roller 360, the third bending upper roller 350 is provided with a fourth protrusion 351, the fourth protrusion 351 has a fourth inclined surface, the fourth protrusion 351 is provided with a bending groove 351a, the third bending lower roller 360 is provided with a fourth groove 361, the fourth groove 361 is matched with the fourth protrusion 351, a fourth bending gap is formed between the fourth groove 361 and the fourth protrusion 351, and the fourth bending gap is used for allowing the front frame 60 to pass through and bending two ends of the front frame 60. It can be understood that, by further providing a third bending upper roller 350 and a third bending lower roller 360, the third bending upper roller 350 and the third bending lower roller 360 are rotatably disposed on the mounting frame 100, the third bending upper roller 350 and the third bending lower roller 360 are vertically spaced, by providing the third bending upper roller 350 with a fourth protrusion 351, one side of the fourth protrusion 351 is provided with a fourth inclined surface, and at the same time, the fourth protrusion 351 is provided with a bending groove 351a, and the third bending lower roller 360 is provided with a fourth groove 361 adapted to the shape of the fourth protrusion 351, the front frame 60 is further bent at both ends of the front frame 60 by the pushing of the rotating third bending upper roller 350 and the third bending lower roller 360 through a fourth bending gap formed between the fourth protrusion 351 and the fourth groove 361, because one side of the fourth protrusion 351 is provided with the fourth inclined surface, thereby can further bend to the first end of preceding frame material 60, further increase the angle of bending of preceding frame material 60 first end, and through bending groove 351a, can bend the 90 degrees bending structures of preceding frame material 60 second end, make the second end of preceding frame material 60 form obtuse angle bending structures, further obtain the preceding frame material 60 that both ends bending structures are different, realize further bending.

Further, referring to fig. 6, the two-stage rolling assembly 300 further includes a fourth bending upper roller 370 and a fourth bending lower roller 380, the fourth bending upper roller 370 is provided with a fifth protrusion 371, the fifth protrusion 371 has a fifth inclined surface, the fourth bending lower roller 380 is provided with a fifth groove 381, the fifth groove 381 is adapted to the fifth protrusion 371, a fifth bending gap is formed between the fifth groove 381 and the fifth protrusion 371, and the fifth bending gap is used for allowing the front frame 60 to pass through and bending two ends of the front frame 60. It can be understood that, by further providing the fourth bending upper roller 370 and the fourth bending lower roller 380, the fourth bending upper roller 370 and the fourth bending lower roller 380 are rotatably disposed on the mounting frame 100, the fourth bending upper roller 370 and the fourth bending lower roller 380 are disposed at an interval from top to bottom, by providing the fifth protrusion 371 on the fourth bending upper roller 370, a fifth inclined surface is disposed on one side of the fifth protrusion 371, and the fourth bending lower roller 380 is formed with a fifth groove 381 matching the shape of the fifth protrusion 371, the front frame 60 further bends the two ends of the front frame 60 by passing through the fifth bending gap formed between the fifth protrusion 371 and the fifth groove 381 under the pushing of the rotating fourth bending upper roller 370 and the fourth bending lower roller 380, and since the fifth inclined surface is disposed on one side of the fifth protrusion 371, the first end of the front frame 60 can further bend, the bending angle of the first end of the front frame material 60 is further increased, and when the obtuse angle bending structure of the second end of the front frame material 60 passes through the gap of the horizontal part between the fifth protrusion 371 and the fifth groove 381, the front frame material 60 can be bent into a 180-degree horizontal structure, so that the front frame material 60 with different two-end bending structures is further obtained, and further bending is realized.

Further, referring to fig. 7, the two-stage rolling assembly 300 further includes a fifth bending upper roller 390 and a fifth bending lower roller 500, the fifth bending upper roller 390 is provided with a sixth protrusion 391, the sixth protrusion 391 has a sixth inclined surface and a seventh inclined surface, the fifth bending lower roller 500 is provided with a sixth groove 501, the sixth groove 501 is adapted to the sixth protrusion 391, a sixth bending gap is formed between the sixth groove 501 and the sixth protrusion 391, and the sixth bending gap is used for allowing the front frame 60 to pass through and bending two ends of the front frame 60. It can be understood that the fifth bending upper roller 390 and the fifth bending lower roller 500 are rotatably disposed on the mounting block 100, the fifth bending upper roller 390 and the fifth bending lower roller 500 are spaced up and down, by providing the sixth protrusion 391 on the fifth bending upper roller 390, both sides of the sixth protrusion 391 are provided with a sixth inclined surface and a seventh inclined surface, respectively, and the fifth bending lower roller 500 is provided with a sixth groove 501 matched with the sixth protrusion 391 in shape, the front frame 60 passes through a sixth bending gap formed between the sixth protrusion 391 and the sixth groove 501 under the pushing of the rotating fifth bending upper roller 390 and the fifth bending lower roller 500, thereby further bend the first end and the second end of preceding frame material 60, especially, can bend the 180 degrees horizontal structure of preceding frame material 60 second end, be favorable to progressively forming the structure of buckling, the shaping is effectual.

Referring to fig. 8, the three-segment rolling assembly 400 includes a plurality of flattening roller sets 410, in one of the flattening roller sets 410, the flattening roller set 410 includes a flattening upper roller 411, a flattening lower roller 412, a first roller 413 and a second roller 414, the flattening upper roller 411 and the flattening lower roller 412 are rotatably disposed on the mounting block 100, the first roller 413 is rotatably disposed at one side of the flattening upper roller 411 and the flattening lower roller 412, and the second roller 414 is rotatably disposed at the other side of the flattening upper roller 411 and the flattening lower roller 412.

It should be noted that a plurality of flattening roller sets 410 are uniformly arranged on the mounting frame 100 at intervals, each flattening roller set 410 includes a flattening upper roller 411, a flattening lower roller 412, a first roller 413 and a second roller 414, the flattening upper roller 411 and the flattening lower roller 412 are arranged at intervals up and down, the first roller 413 and the second roller 414 are respectively rotatably arranged on the left side and the right side of the flattening upper roller 411 and the flattening lower roller 412, the front frame 60 enters a gap between the flattening upper roller 411 and the flattening lower roller 412 under the pushing of the rotating flattening upper roller 411 and the flattening lower roller 412, and meanwhile, the first roller 413 and the second roller 414 arranged on the left side and the right side respectively flatten two ends of the front frame 60, so that the two ends of the front frame 60 respectively form 90-degree bending structures, and the plurality of flattening roller sets 410 are provided, that is the plurality of flattening upper rollers 411, a plurality of flattening rollers, a plurality of rollers 414 are provided, A plurality of lower rolls 412, a plurality of first gyro wheel 413 and a plurality of second gyro wheel 414 that flatten, the distance between two sets of adjacent first gyro wheels 413 and second gyro wheel 414 diminishes gradually to can carry out progressively buckling to the both ends of preceding frame material 60, progressively shaping avoids the bending force that preceding frame material 60 received too big, avoids damaging preceding frame material 60, thereby improves preceding frame material 60 finished product quality.

Specifically, the creasing roller set 210 is provided with five. It can be understood that the folding roller set 210 is set to five, the middle part of the front frame material 60 can be gradually bent, the bending force of the front frame material 60 is avoided being too large, the front frame material 60 is prevented from being damaged, the forming effect is good, and meanwhile, the number of the folding roller set 210 is moderate, and the installation and the replacement are convenient.

More specifically, the pinch roller set 410 is provided with three. It can be understood that the flattening roller set 410 is set to be three, and the last bending and adjustment can be gradually carried out on the two ends of the front frame material 60, so that the phenomenon that the front frame material 60 is excessively bent is avoided, the front frame material 60 is prevented from being damaged, the forming effect is good, and meanwhile, the flattening roller set 410 is moderate in quantity and convenient to install and replace.

To facilitate cleaning and maintenance of the roll-forming apparatus 10, the mounting block 100 is further provided with an anti-stick coating. The anti-sticking coating is a polytetrafluoroethylene coating. It can be appreciated that the anti-adhesion coating is disposed on the surface of the mounting block 100, so that the surface of the mounting block 100 is smooth, and dust and dirt on the surface of the mounting block 100 can be conveniently cleaned, so that the roll forming apparatus 10 can be conveniently cleaned and maintained, and the service life of the roll forming apparatus can be prolonged.

Compared with the prior art, the utility model discloses at least, following advantage has:

the utility model discloses a set up a plurality of folding roller group, can progressively bend to the middle part of preceding frame material, buckle into the shape that needs at the middle part of preceding frame material, progressively shaping, then two-stage passage roll-in subassembly, buckle to the both ends of preceding frame material, make the both ends of preceding frame material form certain bending mechanism, finally, through setting up a plurality of roller group that flatten, that is to say, set up a plurality of first gyro wheels and a plurality of second gyro wheels, can progressively carry out the last shaping of flattening to the both ends through flattening the last running roller and flattening the preceding frame material between the running roller down, this roll forming device divides the middle part of three-section preceding frame material in proper order, the shaping of progressively buckling is carried out at both ends, can form complicated bending structure, the shaping is effectual, the finished product yields is high.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A roll forming apparatus, comprising: the front frame material sequentially passes through the first-section rolling assembly, the second-section rolling assembly and the third-section rolling assembly;

the first-section rolling assembly comprises a plurality of pressing and folding roller wheel sets, and in one pressing and folding roller wheel set, the pressing and folding roller wheel set comprises an upper pressing and folding roller wheel and a lower pressing and folding roller wheel, the upper pressing and folding roller wheel and the lower pressing and folding roller wheel are rotatably arranged on the mounting frame, the upper pressing and folding roller wheel is provided with a first protruding part, the lower pressing and folding roller wheel is provided with a first groove, a first bending gap is formed between the first groove and the first protruding part, and the first bending gap is used for enabling a front frame material to pass through and bending the middle part of the front frame material;

the two-section rolling assembly is used for bending two ends of the front frame material so as to enable the two ends of the front frame material to form a bending structure;

the three-section rolling assembly comprises a plurality of flattening roller sets, one of the flattening roller sets is arranged in the mounting frame, each flattening roller set comprises an upper flattening roller, a lower flattening roller, a first roller and a second roller, the upper flattening roller and the lower flattening roller are rotatably arranged on the mounting frame, the first roller is rotatably arranged on one side of the upper flattening roller and the lower flattening roller, and the second roller is rotatably arranged on the other side of the upper flattening roller and the lower flattening roller.

2. The roll forming device according to claim 1, wherein the two-stage rolling assembly comprises a first upper bending roller and a first lower bending roller, the first upper bending roller is provided with a second protrusion, the second protrusion has a first inclined surface and a second inclined surface, the first lower bending roller is provided with a second groove, the second groove is matched with the second protrusion, a second bending gap is formed between the second groove and the second protrusion, and the second bending gap is used for allowing the front frame to pass through and bending two ends of the front frame.

3. The roll forming device according to claim 2, wherein the two-stage rolling assembly further comprises a second upper bending roller and a second lower bending roller, the second upper bending roller is provided with a third protrusion, the third protrusion has a third inclined surface, the second lower bending roller is provided with a third groove, the third groove is matched with the third protrusion, a third bending gap is formed between the third groove and the third protrusion, and the third bending gap is used for allowing the front frame material to pass through and bending two ends of the front frame material.

4. The roll forming apparatus according to claim 3, wherein the two-stage rolling assembly further comprises a third bending upper roller and a third bending lower roller, the third bending upper roller is provided with a fourth protrusion, the fourth protrusion has a fourth slope, the fourth protrusion has a bending groove, the third bending lower roller has a fourth groove, the fourth groove is matched with the fourth protrusion, a fourth bending gap is formed between the fourth groove and the fourth protrusion, and the fourth bending gap is used for allowing the front frame material to pass through and bending two ends of the front frame material.

5. The roll forming device according to claim 4, wherein the two-stage rolling assembly further comprises a fourth bending upper roller and a fourth bending lower roller, the fourth bending upper roller is provided with a fifth bulge, the fifth bulge has a fifth inclined surface, the fourth bending lower roller is provided with a fifth groove, the fifth groove is matched with the fifth bulge, a fifth bending gap is formed between the fifth groove and the fifth bulge, and the fifth bending gap is used for allowing the front frame material to pass through and bending two ends of the front frame material.

6. The roll forming device according to claim 5, wherein the two-stage rolling assembly further comprises a fifth bending upper roller and a fifth bending lower roller, the fifth bending upper roller is provided with a sixth protrusion, the sixth protrusion has a sixth inclined surface and a seventh inclined surface, the fifth bending lower roller is provided with a sixth groove, the sixth groove is matched with the sixth protrusion, a sixth bending gap is formed between the sixth groove and the sixth protrusion, and the sixth bending gap is used for allowing the front frame material to pass through and bending two ends of the front frame material.

7. The roll forming apparatus of claim 1, wherein there are five creasing roller sets.

8. The roll forming apparatus of claim 1, wherein there are three flattening roller sets.

9. The roll forming apparatus according to claim 1, wherein the mounting frame is provided with an anti-stick coating.

10. The roll forming apparatus of claim 9, wherein the release coating is a polytetrafluoroethylene coating.

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