阅读说明：本技术 一种可提高型材稳定性的变曲率弯曲方法 (Variable curvature bending method capable of improving stability of section bar ) 是由 骆健 丁振华 郑晓宏 陈通 于 2021-07-05 设计创作，主要内容包括：本发明提供一种可提高型材稳定性的变曲率弯曲方法,通过将压料轮组件、绕弯轮组件和带有成型轮的成型轮组件设置在同一操作平台,以及将成型轮设置为主动件,包括：送料工序；弯曲工序；用于将芯棒填充于型材内以起到支撑作用以及从型材中抽出芯棒的插芯工序；弯曲工序是指,在通过调节绕弯轮组件和压料轮组件相对于成型轮的位置,以及控制成型轮的转动或停止,完成型材变曲率弯曲的加工后,通过控制绕弯轮组件、压料轮组件和成型轮将型材逆向输送进行加强加工,其中,加强加工次数为一次以上。本发明可实现型材自动化弯曲加工,并实现型材变曲率弯曲的一次性加工成型以及加强定型,从而提高型材的成型效率以及型材成型的质量稳定性和精度。(The invention provides a variable curvature bending method capable of improving the stability of a section bar, which comprises the following steps of arranging a pressing wheel assembly, a winding wheel assembly and a forming wheel assembly with a forming wheel on the same operating platform, and arranging the forming wheel as a driving part, wherein the method comprises the following steps: feeding; a bending step; a core inserting process for filling the core rod in the section bar to play a supporting role and extracting the core rod from the section bar; the bending process is that after the bending process of the variable-curvature material is finished by adjusting the positions of the bending wheel assembly and the pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel, the bending wheel assembly, the pressing wheel assembly and the forming wheel are controlled to reversely convey the material to perform the reinforcing processing, wherein the reinforcing processing frequency is more than one. The automatic bending machine can realize automatic bending processing of the section, and realize one-time processing forming and reinforced shaping of the variable-curvature bending of the section, thereby improving the forming efficiency of the section and the quality stability and precision of the section forming.)

1. A variable curvature bending method capable of improving the stability of a section bar is characterized in that: the method comprises the following steps that a pressing wheel assembly, a bending wheel assembly and a forming wheel assembly with a forming wheel are arranged on the same operation platform, the forming wheel is arranged as a driving part, and positions among the forming wheel, the pressing wheel assembly and the bending wheel assembly are used as profile bending stations;

the method comprises the following steps:

a feeding process for conveying the section;

a bending step for bending the profile;

a core inserting process for filling the core rod in the section bar to play a supporting role and extracting the core rod from the section bar;

the bending process is that after the bending process of the profile with variable curvature is finished by adjusting the positions of the bending wheel assembly and the pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel, the bending wheel assembly, the pressing wheel assembly and the forming wheel are controlled to reversely convey the profile for strengthening processing, wherein the strengthening processing frequency is more than one time.

2. The variable curvature bending method capable of improving the stability of the profile according to claim 1, wherein: the pressing wheel assembly is provided with a pressing driven wheel and a pressing driving wheel, and the bending wheel assembly is provided with a bending wheel;

the reinforcing processing is carried out by controlling the winding wheel assembly, the pressing wheel assembly and the forming wheel to reversely convey the section bar, and the reinforcing processing means that: and adjusting the positions of the bending wheel assembly and the material pressing wheel assembly relative to the forming wheel, so that the material pressing driven wheel, the forming wheel and the bending wheel interact on the section which is just processed, and roll bending processing is performed along the conveying direction and the reverse direction of the section, thereby realizing the reinforced processing of the section.

3. The variable curvature bending method capable of improving the stability of the profile according to claim 1, wherein: the processing of finishing the variable-curvature bending of the molding material by adjusting the positions of the winding wheel assembly and the material pressing wheel assembly relative to the molding wheel and controlling the rotation or stop of the molding wheel is as follows: the bending processing, the push bending processing or the roll bending processing of the section bar are realized by adjusting the positions of the bending wheel component and the material pressing wheel component relative to the forming wheel and controlling the rotation or stop of the forming wheel, and the one-time processing of the variable-curvature bending of the section bar is realized by adopting the push bending processing, the combination of the bending processing and the push bending processing, the combination of the roll bending processing and the push bending processing or the combination of three processing technologies.

4. The variable curvature bending method capable of improving the stability of the profile according to claim 3, wherein: the reinforcing processing means: and (5) reinforcing and processing the section which is subjected to bending pushing and bending processing and has variable curvature.

5. A method of variable curvature bending according to claim 2 or 3, characterized in that: the adjustment of the positions of the winding wheel assembly and the material pressing wheel assembly relative to the forming wheel refers to that: controlling the pressing wheel assembly to horizontally move along the vertical direction of the profile conveying direction and the profile conveying direction so as to adjust the position of the pressing wheel assembly relative to the forming wheel; and controlling the bending wheel assembly to do circular motion by taking the center of the forming wheel as a circle center, and controlling the bending wheel assembly to move along the connecting line direction of the bending wheel assembly and the center of the forming wheel so as to adjust the position of the bending wheel assembly relative to the forming wheel.

6. The variable curvature bending method capable of improving the stability of the profile according to claim 5, wherein: the bending processing means: controlling the pressing wheel assembly to move along the conveying direction of the section bar, and enabling the pressing driving wheel to be opposite to the forming wheel; the angle of the circular motion of the bending wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel are adjusted, the bending wheel is controlled to be attached to the conveyed section, the section is rotated and bent around the forming wheel, and the bending forming of the section is realized.

7. The variable curvature bending method capable of improving the stability of the profile according to claim 5, wherein: the push bending processing means: controlling the pressing wheel assembly to move along the conveying direction of the section bar, and enabling the pressing driving wheel to be opposite to the forming wheel; according to the curvature of the profile, adjusting the angle of the circular motion of the bending wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; and controlling the forming wheel to rotate, and in the profile pushing process, rotating and bending the profile between the forming wheel and the bending wheel to realize the bending forming of the profile.

8. The variable curvature bending method capable of improving the stability of the profile according to claim 5, wherein: the roll bending processing means: controlling the pressing driving wheel to move along the conveying direction of the section bar, wherein the pressing driving wheel is opposite to the forming wheel; according to the curvature of the profile machining and forming, adjusting the angle of the circular motion of the bending wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; and the forming wheel is controlled to rotate, and the pressing driven wheel is controlled to horizontally move along the vertical direction of the profile conveying direction and the profile conveying direction, so that the pressing driven wheel, the forming wheel and the bending wheel interact with each other to roll and bend the conveyed profile on the profile, and the bending forming of the profile is realized.

9. The variable curvature bending method capable of improving the stability of the profile according to claim 3, wherein: filling the core rod into the section bar when the section bar is subjected to bending processing or bending processing;

and (4) drawing out the core rod in the section bar when the section bar is subjected to roll bending processing.

10. The variable curvature bending method capable of improving the stability of the profile according to claim 1, wherein: and (4) extracting the core rod in the section bar when the section bar is reinforced.

Technical Field

The invention relates to the technical field of profile processing, in particular to a variable-curvature bending method capable of improving the stability of a profile.

Background

At present, the bending forming technology is one of the important processing methods in the manufacturing departments in the fields of aerospace, automobiles, chemical engineering, ships and the like, and occupies a very important position in the mechanical manufacturing industry. At present, bending processes of the section mainly comprise bending, push bending, bending around, roll bending and the like.

The bending forming process is to gradually bend and form the section around a bending die under the action of bending moment, and is suitable for the bending requirement with smaller curvature radius. The roll bending forming process mainly adopts a processing method of bending a section by three rollers, but the roll bending has certain requirements on the bending radius, is very suitable for the bending requirement with larger curvature radius to a certain extent, and cannot achieve the bending precision for small-radius bending. The push bending forming process is also suitable for processing the section with large curvature radius.

The processing of different bending radii is needed in a plurality of sectional material processing products, but most of the existing sectional material bending methods can only simultaneously realize one bending process in equipment implementation, so that the processing equipment and the mode can be replaced for many times only aiming at the processing requirements of different bending radii in the processing process, the production efficiency is low due to the increase of labor force, the equipment needs to be repositioned and parameters need to be adjusted every time, and the quality and the precision of the formed sectional material cannot be ensured by the discontinuous processing mode. Moreover, as mentioned above, the bending method with variable curvature needs more than two devices to complete, which greatly increases the processing cost of the section bar.

In addition, the existing push bending process is difficult to ensure the accuracy of the bent section with larger specification, because the resilience of the bent material of the section is large, the possibility of larger deformation exists after the bending process is finished, and the problem that the existing push bending process is urgently needed to solve is also solved.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings in the prior art, and provides a variable curvature bending method capable of improving the stability of a section.

In order to achieve the purpose, the invention is realized by the following technical scheme: a variable curvature bending method capable of improving the stability of a section bar is characterized in that: the method comprises the following steps that a pressing wheel assembly, a bending wheel assembly and a forming wheel assembly with a forming wheel are arranged on the same operation platform, the forming wheel is arranged as a driving part, and positions among the forming wheel, the pressing wheel assembly and the bending wheel assembly are used as profile bending stations;

the method comprises the following steps:

a feeding process for conveying the section;

a bending step for bending the profile;

a core inserting process for filling the core rod in the section bar to play a supporting role and extracting the core rod from the section bar;

the bending process is that after the bending process of the profile with variable curvature is finished by adjusting the positions of the bending wheel assembly and the pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel, the bending wheel assembly, the pressing wheel assembly and the forming wheel are controlled to reversely convey the profile for strengthening processing, wherein the strengthening processing frequency is more than one time.

In the scheme, the bending method automatically conveys the profile to the bending process to perform automatic processing of profile bending, and simultaneously, the core pulling process fills the core rod in the profile or extracts the core rod to ensure the quality of profile bending processing, so that the full-automatic processing of profile conveying and profile bending is realized.

In addition, the relative position of the pressing wheel assembly and the bending wheel assembly can be adjusted, and the forming wheel is designed as a driving part, so that the processing of variable-curvature bending of the forming material can be finished by adjusting the positions among the forming wheel, the pressing wheel assembly and the bending wheel assembly and controlling the rotation or stop of the forming wheel and mutually matching the forming wheel, the pressing wheel assembly and the bending wheel assembly, and the problems of high labor intensity, poor processing quality and the like caused by the need of replacing equipment or modes when different curvature radiuses are processed can be solved. Meanwhile, after processing, the profile can be reversely conveyed by controlling the winding wheel assembly, the pressing wheel assembly and the forming wheel to be reinforced and processed. The invention can correct the curvature by adding a reinforcing processing mode, thereby solving the stability problem of bending and forming with large curvature radius, improving the forming efficiency of the section and ensuring the forming quality and precision of the section.

The pressing wheel assembly is provided with a pressing driven wheel and a pressing driving wheel, and the bending wheel assembly is provided with a bending wheel;

the reinforcing processing is carried out by controlling the winding wheel assembly, the pressing wheel assembly and the forming wheel to reversely convey the section bar, and the reinforcing processing means that: and adjusting the positions of the bending wheel assembly and the material pressing wheel assembly relative to the forming wheel, so that the material pressing driven wheel, the forming wheel and the bending wheel interact on the section which is just processed, and roll bending processing is performed along the conveying direction and the reverse direction of the section, thereby realizing the reinforced processing of the section.

The processing of finishing the variable-curvature bending of the molding material by adjusting the positions of the winding wheel assembly and the material pressing wheel assembly relative to the molding wheel and controlling the rotation or stop of the molding wheel is as follows: the bending processing, the push bending processing or the roll bending processing of the section bar are realized by adjusting the positions of the bending wheel component and the material pressing wheel component relative to the forming wheel and controlling the rotation or stop of the forming wheel, and the one-time processing of the variable-curvature bending of the section bar is realized by adopting the push bending processing, the combination of the bending processing and the push bending processing, the combination of the roll bending processing and the push bending processing or the combination of three processing technologies.

The reinforcing processing means: and (5) reinforcing and processing the section which is subjected to bending pushing and bending processing and has variable curvature.

According to the invention, the forming wheel, the pressing wheel assembly and the bending wheel assembly are matched with each other, so that the equipment can carry out different combined processing on the section, and the one-time processing of variable-curvature bending of the section can be realized.

The adjustment of the positions of the winding wheel assembly and the material pressing wheel assembly relative to the forming wheel refers to that: controlling the pressing wheel assembly to horizontally move along the vertical direction of the profile conveying direction and the profile conveying direction so as to adjust the position of the pressing wheel assembly relative to the forming wheel; and controlling the bending wheel assembly to do circular motion by taking the center of the forming wheel as a circle center, and controlling the bending wheel assembly to move along the connecting line direction of the bending wheel assembly and the center of the forming wheel so as to adjust the position of the bending wheel assembly relative to the forming wheel.

The bending processing means: controlling the pressing wheel assembly to move along the conveying direction of the section bar, and enabling the pressing driving wheel to be opposite to the forming wheel; the angle of the circular motion of the bending wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel are adjusted, the bending wheel is controlled to be attached to the conveyed section, the section is rotated and bent around the forming wheel, and the bending forming of the section is realized.

The push bending processing means: controlling the pressing wheel assembly to move along the conveying direction of the section bar, and enabling the pressing driving wheel to be opposite to the forming wheel; according to the curvature of the profile, adjusting the angle of the circular motion of the bending wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; and controlling the forming wheel to rotate, and in the profile pushing process, rotating and bending the profile between the forming wheel and the bending wheel to realize the bending forming of the profile.

The roll bending processing means: controlling the pressing driving wheel to move along the conveying direction of the section bar, wherein the pressing driving wheel is opposite to the forming wheel; according to the curvature of the profile machining and forming, adjusting the angle of the circular motion of the bending wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; and the forming wheel is controlled to rotate, and the pressing driven wheel is controlled to horizontally move along the vertical direction of the profile conveying direction and the profile conveying direction, so that the pressing driven wheel, the forming wheel and the bending wheel interact with each other to roll and bend the conveyed profile on the profile, and the bending forming of the profile is realized.

Filling the core rod into the section bar when the section bar is subjected to bending processing or bending processing;

and (4) drawing out the core rod in the section bar when the section bar is subjected to roll bending processing.

And (4) extracting the core rod in the section bar when the section bar is reinforced.

Compared with the prior art, the invention has the following advantages and beneficial effects: the variable curvature bending method capable of improving the stability of the section bar can realize automatic bending processing of the section bar and realize one-time processing forming and reinforced shaping of the variable curvature bending of the section bar, thereby improving the forming efficiency of the section bar and the quality stability and precision of the section bar forming.

Drawings

FIG. 1 is a schematic view of a variable curvature profile bending apparatus of the present invention;

FIG. 2 is a schematic view of the bending mechanism in the variable curvature profile bending apparatus of the present invention;

FIG. 3 is a top view of the bending mechanism of the variable curvature profile bending apparatus of the present invention;

FIG. 4 is a schematic side view of the bending mechanism of the variable curvature profile bending apparatus of the present invention;

FIG. 5 is a schematic view in the direction C-C of FIG. 3;

FIG. 6 is a schematic view in the direction D-D of FIG. 3;

FIG. 7 is a schematic view in the direction E-E of FIG. 3;

FIG. 8 is a schematic view in the direction F-F of FIG. 4;

FIG. 9 is a schematic view of a bending wheel module of the bending mechanism of the present invention;

FIG. 10 is a schematic view of a pinch roller assembly in the bending mechanism of the present invention;

FIG. 11 is a top view of a pinch roller assembly in the bending mechanism of the present invention;

FIG. 12 is a schematic view taken along line A-A of FIG. 11;

FIGS. 13(a) -13(e) are schematic views illustrating a bending method according to the first embodiment;

wherein, 1 is a bending mechanism, 2 is a frame, 3 is a feeding mechanism, 4 is a core pulling mechanism, 5 is a headstock, 6 is a pressing wheel assembly, 6.1 is a linear guide rail II, 6.2 is a pressing wheel mounting plate I, 6.3 is a pressing oil cylinder II, 6.4 is an oil cylinder connecting seat, 6.5 is a hinged support, 6.6 is a pressing wheel mounting plate II, 6.7 is a linear guide rail III, 6.8 is an auxiliary push oil cylinder, 6.9 is a pressing driving wheel, 6.10 is a pressing driving wheel shaft, 6.11 is an oil motor, 6.12 is a synchronous belt wheel, 6.13 is a synchronous belt, 6.14 is a pressing driving wheel support, 6.15 is a pressing driven wheel, 6.16 is a pressing driven wheel shaft, 6.17 is a pressing driven wheel support, 6.18 is a linear guide rail IV, 6.19 is a telescopic oil cylinder, 6.20 is a frame, 7 is a bending wheel assembly, 7.1 is a swinging arm oil cylinder, 7.2 is a swinging arm, 7.3 is a swinging arm connecting seat, 7.4 is a pressing arm mounting plate, 7.7.7.7.7 is a linear guide rail, 7.7.7 is a bending wheel, 7.7.7.7 is a bending wheel, 7.8 is a bending wheel, 7.9 is a bending wheel support, 7.10 is a bending wheel shaft, 7.11 is an oil cylinder connector, 7.12 is a bending wheel mounting frame, 7.13 is an adjusting cover plate, 8 is a forming wheel assembly, 8.1 is a forming wheel, 8.2 is a driving shaft, 8.3 is a servo motor, 8.4 is a bevel gear and 9 is a support frame.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1 to 12, the bending apparatus used in the variable curvature bending method of the present invention for improving the stability of the profile includes:

a frame 2;

a bending mechanism 1 for bending the section bar;

a feeding mechanism 3 for conveying the section bar to the bending mechanism 1;

the core pulling mechanism 4 is used for filling the core rod in the section bar to play a role of supporting the cavity in the section bar;

the bending mechanism 1 is arranged on the machine frame 2, and the feeding mechanism 3 is arranged on the machine frame 2 and can move back and forth on the machine frame 2 through the driving and conveying assembly, so that the sectional materials are conveyed to the bending mechanism 1. The core-pulling mechanism 4 is fixed on the frame 2 after adjusting the position. A supporting frame 9 for supporting the section bar and/or the core rod is also arranged between the feeding mechanism 3 and the bending mechanism 1, and the supporting frame 9 is arranged on the frame 2. The feeding mechanism 3 and the core pulling mechanism 4 of the embodiment are all mature mechanical equipment common in bending processing of profiles on the market.

The bending mechanism 1 comprises a headstock 5, a material pressing wheel assembly 6, a winding wheel assembly 7 and a forming wheel assembly 8 provided with a forming wheel 8.1, wherein the headstock 5 is arranged on a rack 2, the forming wheel assembly 8 is arranged on the headstock 5, the forming wheel 8.1 is a driving wheel, the material pressing wheel assembly 6 is arranged on the headstock 5, and the material pressing wheel assembly 6 can horizontally move along the vertical direction of the profile conveying direction and the profile conveying direction; the winding wheel component 7 is arranged on the headstock 5 and can do circular motion by taking the center of the forming wheel 8.1 as the center of a circle, and the winding wheel component 7 can move along the connecting line direction of the winding wheel component and the center of the forming wheel 8.1. The positions among the forming wheel 8.1, the material pressing wheel component 6 and the winding wheel component 7 are used as profile bending stations; when the bending machine works, the positions of the bending wheel assembly 7 and the material pressing wheel assembly 6 relative to the forming wheel 8.1 are adjusted, and the forming wheel 8.1 is controlled to rotate or stop, so that the one-time processing of the variable-curvature bending of the section is realized.

The forming wheel assembly 8 further comprises a driving shaft 8.2, a servo motor 8.3 and a transmission device, wherein the driving shaft 8.2 is mounted on the headstock 5 through a bearing and connected with the forming wheel 8.1, and the servo motor 8.3 is arranged on the headstock 5 and connected with the driving shaft 8.2 through the transmission device, so that the forming wheel 8.1 on the driving shaft 8.2 is driven to rotate. The transmission device is two bevel gears 8.4 respectively connected with a driving shaft 8.2 and a servo motor 8.3, and the two bevel gears 8.4 are meshed and connected. The forming wheel 8.1 is designed as a driving wheel, so that the equipment not only can carry out bending processing on the section, but also can carry out push bending processing and roll bending processing on the section by matching with the material pressing wheel assembly 6 and the bending wheel assembly 7.

The bending wheel assembly 7 comprises a swing arm oil cylinder 7.1, a swing arm device and a bending wheel module, wherein the swing arm device comprises a swing arm 7.2, a swing arm connecting seat 7.3 and a swing arm shaft 7.4, the swing arm shaft 7.4 is respectively connected with a driving shaft 8.2 and a headstock 5 through bearings, the bending wheel module is arranged on the swing arm 7.2, the swing arm 7.2 is connected with the swing arm shaft 7.4, and the swing arm oil cylinder 7.1 is connected with the swing arm shaft 7.4 through the swing arm connecting seat 7.3, so that the bending wheel module on the swing arm 7.2 is driven to do circular motion by taking the center of a forming wheel 8.1 as a circle center.

The bending wheel module comprises a bending wheel mounting plate 7.5, a linear guide rail I7.6, a pressing oil cylinder I7.7, a bending wheel 7.8, a bending wheel support 7.9, a bending wheel mounting frame 7.12 and a bending wheel shaft 7.10, wherein the linear guide rail I7.6 is arranged on the swing arm 7.2 and is in sliding connection with the bending wheel mounting plate 7.5, the bending wheel 7.8 is arranged on the bending wheel support 7.9 through the bending wheel shaft 7.10, the bending wheel support 7.9 is arranged on the bending wheel mounting plate 7.5 through the bending wheel mounting frame 7.12, the pressing oil cylinder I7.7 is connected with an oil cylinder joint 7.11 at the bottom of the bending wheel mounting plate 7.5, the bending wheel 7.8 on the bending wheel mounting plate 7.5 is driven to move along the connecting line of the bending wheel mounting plate 7.8.1 and the forming wheel 8.1 through the linear guide rail I7.6, and the distance between the bending wheel 7.8 and the forming wheel 8.1 is adjusted through the mode. The bending wheel module comprises an adjusting cover plate 7.13, and a bending wheel support 7.9 is adjusted to be fixed through the adjusting cover plate 7.13 after the height of a bending wheel mounting frame 7.12 is adjusted, so that the height of a bending wheel 7.8 can be adjusted.

The material pressing wheel assembly 6 comprises a linear guide rail II 6.1, a material pressing wheel mounting plate I6.2, a pressing oil cylinder II 6.3 and a material pressing wheel module, wherein the linear guide rail II 6.1 is arranged on a machine head seat 5 and is in sliding connection with the material pressing wheel mounting plate I6.2, the material pressing wheel module is arranged on the material pressing wheel mounting plate I6.2, and the pressing oil cylinder II 6.3 is hinged with a hinged support 6.5 at the bottom of the material pressing wheel mounting plate I6.2 through an oil cylinder connecting seat 6.4, so that the material pressing wheel module on the material pressing wheel mounting plate I6.2 is driven to horizontally move along the vertical direction of the profile conveying direction through the linear guide rail II 6.1.

The pressing wheel module comprises a second pressing wheel mounting plate 6.6, a pressing driving wheel device, a pressing driven wheel device, a linear guide rail III 6.7 and an auxiliary push oil cylinder 6.8, the linear guide rail III 6.7 is arranged on the first pressing wheel mounting plate 6.2 and is in sliding connection with the second pressing wheel mounting plate 6.6, and the pressing driven wheel device and the pressing driving wheel device are arranged on the second pressing wheel mounting plate 6.6 side by side; the auxiliary boosting oil cylinder 6.8 is connected with the second material pressing wheel mounting plate 6.6, so that the material pressing driven wheel device and the material pressing driving wheel device on the second material pressing wheel mounting plate 6.6 can be driven to synchronously move along the conveying direction of the section.

Specifically, the pressing driving wheel device comprises a pressing driving wheel 6.9, a pressing driving wheel shaft 6.10, an oil motor 6.11, a synchronous pulley 6.12, a synchronous belt 6.13 and a pressing driving wheel support 6.14 arranged on the pressing wheel mounting plate II 6.6, wherein the pressing driving wheel shaft 6.10 is mounted on the pressing driving wheel support 6.14 through a bearing and connected with the pressing driving wheel 6.9, and the oil motor 6.11 is arranged on the pressing driving wheel support 6.14 and connected with the pressing driving wheel shaft 6.10 through the synchronous pulley 6.12 and the synchronous belt 6.13, so that the rotation of the pressing driving wheel 6.9 on the pressing driving wheel shaft 6.10 is driven.

The material pressing driven wheel device comprises a material pressing driven wheel 6.15, a material pressing driven wheel shaft 6.16, a material pressing driven wheel support 6.17, a linear guide rail IV 6.18, a telescopic oil cylinder 6.19 and a frame 6.20 arranged on a material pressing wheel mounting plate II 6.6, wherein the material pressing driven wheel 6.15 is mounted on the material pressing driven wheel support 6.17 through the material pressing driven wheel shaft 6.16, the linear guide rail IV 6.18 is arranged on the frame 6.20, and a driving end of the telescopic oil cylinder 6.19 is connected with the linear guide rail IV 6.18 in a sliding mode and is connected with the material pressing driven wheel support 6.17, so that the material pressing driven wheel 6.15 is driven to horizontally move along the vertical direction of the profile conveying direction.

The variable curvature bending method capable of improving the stability of the section bar comprises the following steps: by arranging the pressing wheel assembly 6, the winding wheel assembly 7 and the forming wheel assembly 8 with the forming wheel 8.1 on the same operating platform, and arranging the forming wheel 8.1 as a driving piece, the method comprises the following steps:

a feeding process for conveying the section;

a bending step for bending the profile;

a core inserting process for filling the core rod in the section bar to play a supporting role and extracting the core rod from the section bar;

wherein, the bending process is as follows: after the processing of the variable-curvature bending of the profile is finished by adjusting the positions of the bending wheel assembly 7 and the material pressing wheel assembly 6 relative to the forming wheel 8.1 and controlling the rotation or stop of the forming wheel 8.1, the profile is reversely conveyed by controlling the bending wheel assembly 7, the material pressing wheel assembly 6 and the forming wheel 8.1 to carry out reinforcing processing, wherein the reinforcing processing time is more than one time.

Wherein, the reinforcing processing of the section bar reverse conveying through controlling the winding wheel component 7, the pressing wheel component 6 and the forming wheel 8.1 means that: the positions of the bending wheel assembly 7 and the material pressing wheel assembly 6 relative to the forming wheel 8.1 are adjusted, so that the material pressing driven wheel 6.15, the forming wheel 8.1 and the bending wheel 7.8 interact on the section which is just machined, roll bending is carried out along the conveying direction and the reverse direction of the section, and the section is strengthened and machined.

Specifically, the method realizes the bending processing, the push bending processing or the roll bending processing of the section bar by adjusting the positions of the bending wheel assembly 7 and the material pressing wheel assembly 6 relative to the forming wheel 8.1 and controlling the rotation or stop of the forming wheel 8.1. The reinforcing processing means: and (5) reinforcing and processing the section which is subjected to bending pushing and bending processing and has variable curvature.

And by adjusting the position of the winding wheel assembly 7 and the pressing wheel assembly 6 relative to the forming wheel 8.1, the following are meant: controlling the material pressing wheel assembly 6 to horizontally move along the vertical direction of the profile conveying direction and the profile conveying direction so as to adjust the position of the material pressing wheel assembly 6 relative to the forming wheel 8.1; the round-bending wheel component 7 is controlled to do circular motion by taking the center of the forming wheel 8.1 as a circle center, and the round-bending wheel component 7 is controlled to move along the connecting line direction of the round-bending wheel component 7 and the center of the forming wheel 8.1 so as to adjust the position of the round-bending wheel component 7 relative to the forming wheel 8.1.

Wherein, the bending processing means: the pressing wheel assembly 6 is controlled to move along the profile conveying direction, the pressing driving wheel 6.9 is opposite to the forming wheel 8.1, and at the moment, the pressing driving wheel 6.9 and the pressing driven wheel 6.15 can play a role in pressing the profile and a role in conveying and guiding the profile. The angle of the circular motion of the bending wheel 7.8 and the displacement of the connecting line direction of the center of the bending wheel 7.8 and the center of the forming wheel 8.1 are adjusted, the bending wheel 7.8 is controlled to be attached to the conveyed section, so that the section is rotated and bent around the forming wheel 8.1, and the bending forming of the section is realized.

The push bending processing means: the pressing wheel assembly 6 is controlled to move along the profile conveying direction, the pressing driving wheel 6.9 is opposite to the forming wheel 8.1, and at the moment, the pressing driving wheel 6.9 and the pressing driven wheel 6.15 can play a role in pressing the profile and a role in conveying and guiding the profile. According to the formed curvature of the section bar, the angle of the circular motion of the bending wheel 7.8 and the displacement of the connecting line direction of the center of the bending wheel 7.8 and the center of the forming wheel 8.1 are adjusted. And controlling the forming wheel 8.1 to rotate, and in the profile pushing process, rotationally bending the profile at a profile bending station between the forming wheel 8.1 and the bending wheel 7.8 to realize profile bending forming.

Roll bending processing: and controlling the pressing driving wheel 6.9 to move along the conveying direction of the section bar, wherein the pressing driving wheel 6.9 is opposite to the forming wheel 8.1. According to the curvature of the profile machining and forming, the angle of the circular motion of the bending wheel 7.8 and the displacement of the connecting line direction of the center of the bending wheel 7.8 and the center of the forming wheel 8.1 are adjusted. And controlling the forming wheel 8.1 to rotate, and controlling the pressing driven wheel 6.15 to horizontally move along the vertical direction of the profile conveying direction and the profile conveying direction, so that the pressing driven wheel 6.15, the forming wheel 8.1 and the bending wheel 7.8 interact with each other to roll and bend the conveyed profile on the profile, and the bending forming of the profile is realized.

When the profile is subjected to bending processing or bending processing, the bending method is to fill a core rod in the profile; the bending method of the invention is to draw out the core rod in the section bar when the section bar is reinforced.

The embodiment adopts the combination of the bending processing and the pushing bending processing to carry out the bending processing of the section bar, and finally, the reinforcing processing is carried out on the section bar. The steps of the bending method of the present embodiment are as follows:

(1) the first small radius of curvature shaping of the profile is achieved by a wrap-around process, as shown in fig. 13 (a).

(2) The profile is formed with a large curvature radius by push-bending, as shown in fig. 13 (b).

(3) The pinch roller assembly 6 and the winding wheel assembly 7 are controlled to return as shown in fig. 13 (c).

(4) The second small radius of curvature shaping of the profile is achieved by a wrap-around process as shown in fig. 13 (d). At this time, the bending processing with two small curvature radiuses and the bending processing with a middle large curvature radius are finished,

(5) the stability of the large curvature radius bend molding is improved by reinforcing the middle large curvature radius bend portion and correcting the curvature, as shown in fig. 13 (e).

Example two

The present embodiment is different from the first embodiment only in that: in the embodiment, after the one-time processing of the variable-curvature bending of the section bar can be realized by adopting the combination of push bending processing, roll bending processing and push bending processing or three processing technologies, the section bar is reversely conveyed by controlling the winding wheel assembly, the pressing wheel assembly and the forming wheel to be reinforced and processed.

Other structures of the present embodiment are consistent with the present embodiment.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.