阅读说明：本技术 一种型材变曲率的弯曲方法及其弯曲机构 (Bending method and bending mechanism for variable curvature of section bar ) 是由 郑晓宏 沈一洲 程诚 赵启康 于 2021-07-05 设计创作，主要内容包括：本发明提供一种型材变曲率的弯曲方法,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,将所述成型轮、压料轮组件和绕弯轮组件之间的位置作为型材弯曲工位；将成型轮设置为圆形、椭圆形或异形,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,实现在同一操作平台上对传送至型材弯曲工位的型材进行变曲率弯曲的一次性加工。本发明型材变曲率的弯曲方法可实现型材变曲率弯曲的一次性加工,从而提高型材的成型效率以及保证型材成型的质量和精度,并降低型材弯曲的加工成本。本发明还提供一种结构紧凑和实用性强的弯曲机构,可对型材进行变曲率弯曲加工。(The invention provides a bending method for variable curvature of a profile, which is characterized in that a pressing wheel assembly, a bending wheel assembly and a forming wheel assembly with a forming wheel are arranged on the same operating platform, the forming wheel is arranged as a driving part, and the positions among the forming wheel, the pressing wheel assembly and the bending wheel assembly are used as profile bending stations; the forming wheel is set to be circular, oval or special-shaped, and the bending-variable-curvature bending one-time processing of the section bar conveyed to the section bar bending station is realized on the same operation platform by adjusting the positions of the winding wheel component and the material pressing wheel component relative to the forming wheel and controlling the rotation or stop of the forming wheel. The bending method of the variable curvature of the section bar can realize one-time processing of the variable curvature bending of the section bar, thereby improving the forming efficiency of the section bar, ensuring the forming quality and precision of the section bar and reducing the processing cost of the bending of the section bar. The invention also provides a bending mechanism with compact structure and strong practicability, which can be used for carrying out variable curvature bending processing on the section.)

1. A bending method for variable curvature 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 forming wheel is set to be circular, oval or special-shaped, and the bending-variable-curvature bending one-time processing of the section bar conveyed to the section bar bending station is realized on the same operation platform by adjusting the positions of the winding wheel component and the material pressing wheel component relative to the forming wheel and controlling the rotation or stop of the forming wheel.

2. The profile variable curvature bending method according to claim 1, wherein: when the forming wheel is set to be oval or special-shaped, the one-time processing of variable-curvature bending of the section bar conveyed to the section bar bending station on the same operation platform is realized by adjusting the positions of the winding wheel assembly and the material pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel: 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 assembly and the material pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel, and the one-time processing of variable curvature bending of the section bar conveyed to the section bar bending station on the same operation platform is realized by adopting one processing technology or the combination of any processing technology.

3. The profile variable curvature bending method according to claim 2, wherein: 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 component to do circular motion by taking the center of the forming wheel as a circle center, and controlling the bending wheel component to move along the connecting line direction of the center of the bending wheel component and the center of the forming wheel so as to adjust the position of the bending wheel component relative to the forming wheel.

4. The profile variable curvature bending method according to claim 3, 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 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, the forming wheel is controlled to rotate to the steering direction of the corresponding bending radius, then the rotation is stopped, 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 profile, so that the profile is rotated and bent around the forming wheel, and the forming of the curvature radius of the profile is realized;

the push bending processing means: setting the motion parameters of a bending wheel and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel are as follows: the angle of the circumferential motion of the bending wheel corresponding to the rotating track of the forming wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel and the pressing driven wheel corresponding to the rotating track of the forming wheel; the forming wheel is controlled to rotate, in the section pushing process, the bending wheel is controlled to move according to the motion parameters of the set bending wheel, the pressing driving wheel and the pressing driven wheel are controlled to move according to the motion parameters of the set pressing wheel assembly, the section rotates and bends between the forming wheel and the bending wheel, and the curvature radius forming of the section is realized;

the roll bending processing means: setting the motion parameters of a bending wheel and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel are as follows: the angle of the circumferential motion of the bending wheel corresponding to the rotating track of the forming wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel and the pressing driven wheel corresponding to the rotating track of the forming wheel; the forming wheel is controlled to rotate, the bending wheel is controlled to move according to the set motion parameters of the bending wheel, and the pressing driving wheel and the pressing driven wheel are controlled to move according to the set motion parameters of the pressing wheel assembly, so that the pressing driven wheel, the forming wheel and the bending wheel interact with each other to roll and bend the conveyed section on the section, and the curvature radius forming of the section is realized.

5. The profile variable curvature bending method according to claim 3, wherein: the method also comprises the step of carrying out secondary bending and shaping processing on the section which is bent by push bending processing;

the secondary bending and shaping processing steps are as follows: setting the motion parameters of a bending wheel and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel are as follows: the angle of the circumferential motion of the bending wheel corresponding to the rotating track of the forming wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel and the pressing driven wheel corresponding to the rotating track of the forming wheel; and controlling the forming wheel to rotate, controlling the bending wheel to move according to the set motion parameters of the bending wheel, and controlling the pressing driving wheel and the pressing driven wheel to move according to the set motion parameters of the pressing wheel assembly, so that the pressing driven wheel, the forming wheel and the bending wheel interact to roll and bend the section which is just machined, and the secondary bending and shaping processing of the section is realized.

6. The profile variable curvature bending method according to claim 1, wherein: when the forming wheel is set to be circular, the one-time processing of variable curvature bending of the section bar conveyed to the section bar bending station on the same operation platform is realized by adjusting the positions of the winding wheel assembly and the material pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel, and the one-time processing refers to the following steps: the bending processing, the bending pushing processing or the bending rolling processing are carried out on the section bar by adjusting the positions of the bending wheel assembly and the material pressing wheel assembly relative to the forming wheel and controlling the forming wheel to rotate or stop, and the bending pushing processing, the bending rolling processing or the combination of any processing technology is adopted to realize the one-time processing of variable-curvature bending on the section bar conveyed to the section bar bending station on the same operation platform.

7. The profile variable curvature bending method of claim 6, wherein: 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 component to do circular motion by taking the center of the forming wheel as a circle center, and controlling the bending wheel component to move along the connecting line direction of the center of the bending wheel component and the center of the forming wheel so as to adjust the position of the bending wheel component relative to the forming wheel.

8. The profile variable curvature bending method of claim 7, 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 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; 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 bending wheel to be attached to the conveyed section bar so that the section bar is rotationally bent around the forming wheel to realize the forming of the curvature radius of the section bar;

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; controlling the forming wheel to rotate, and in the process of pushing the section, the section rotates and bends between the forming wheel and the bending wheel to realize the forming of the curvature radius of the section;

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 controlling the forming wheel to rotate, and controlling the pressing driven wheel 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 forming of the curvature radius of the profile is realized.

9. The profile variable curvature bending method of claim 7, wherein: the method also comprises the step of carrying out secondary bending and shaping processing on the section which is bent by push bending processing; the secondary bending and shaping processing steps are as follows: 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 controlling the forming wheel to rotate, and controlling the pressing driven wheel 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 to roll and bend the profile which is just processed, and the secondary bending and shaping processing of the profile is realized.

10. A bending mechanism for profile variable curvature is characterized in that: comprises a headstock, a pressing wheel component, a winding wheel component and a forming wheel component provided with a forming wheel; the forming wheel assembly is arranged on the machine head seat, and the forming wheel is a driving wheel; the pressing wheel assembly is arranged on the machine head seat and can horizontally move along the direction vertical to the profile conveying direction and the profile conveying direction; the winding wheel component is arranged on the headstock and can perform circular motion by taking the center of the forming wheel as the center of a circle, and the winding wheel component can move along the direction of a connecting line between the center of the winding wheel component and the center of the forming wheel; the positions among the forming wheel, the pressing wheel assembly and the winding wheel assembly are used as section bending stations; when the bending machine works, the one-time processing of the variable-curvature bending of the section bar is realized by adjusting the positions of the winding wheel component and the material pressing wheel component relative to the forming wheel and controlling the rotation or stop of the forming wheel;

the forming wheel is a round forming wheel, an oval forming wheel or a special-shaped wheel.

Technical Field

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

Background

Profile bending parts have a very wide range of applications in the industrial field. Common section bending methods include bending, push bending, roll bending and the like, and most parts produced by the methods have the characteristics of simple shape and fixed curvature.

The processing of different bending radii, namely the so-called variable curvature processing, is required in a plurality of profile processed products, but the conventional bending equipment and bending method can only process the profile with a single curvature and cannot process the profile into a shape with a variable curvature at one time, so that the processing equipment and the processing mode can be changed for many times to perform processing and forming for different bending radii in a 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 profile forming cannot be ensured due to 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.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings in the prior art and provide a variable-curvature bending method for a profile, which can realize one-time processing of variable-curvature bending of the profile, thereby improving the forming efficiency of the profile, ensuring the forming quality and precision of the profile and reducing the processing cost of the profile bending. The invention also provides a bending mechanism with compact structure and strong practicability, which can be used for carrying out variable curvature bending processing on the section.

In order to achieve the purpose, the invention is realized by the following technical scheme: a bending method for variable curvature 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 forming wheel is set to be circular, oval or special-shaped, and the bending-variable-curvature bending one-time processing of the section bar conveyed to the section bar bending station is realized on the same operation platform by adjusting the positions of the winding wheel component and the material pressing wheel component relative to the forming wheel and controlling the rotation or stop of the forming wheel.

In the scheme, the relative positions of the pressing wheel assembly and the bending wheel assembly can be adjusted, and the forming wheel is designed as the driving wheel, so that the one-time processing of the variable-curvature bending of the section can be realized 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 the mutual matching among the forming wheel, the pressing wheel assembly and the bending wheel assembly, and thus the problems of high labor intensity, poor processing quality and the like caused by equipment or mode replacement when different curvature radiuses are processed can be solved, and the forming efficiency of the section is improved and the forming quality and precision of the section are ensured.

The first scheme is as follows:

when the forming wheel is set to be oval or special-shaped, the one-time processing of variable-curvature bending of the section bar conveyed to the section bar bending station on the same operation platform is realized by adjusting the positions of the winding wheel assembly and the material pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel: 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 assembly and the material pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel, and the one-time processing of variable curvature bending of the section bar conveyed to the section bar bending station on the same operation platform is realized by adopting one processing technology or the combination of any processing technology.

According to the invention, the forming wheel, the pressing wheel assembly and the bending wheel assembly are matched with each other, and the forming wheel is a special-shaped wheel or an oval, so that the equipment can be used for processing one of the profiles or processing the profiles in any combination, and one-time processing of variable-curvature bending of the profiles 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 component to do circular motion by taking the center of the forming wheel as a circle center, and controlling the bending wheel component to move along the connecting line direction of the center of the bending wheel component and the center of the forming wheel so as to adjust the position of the bending wheel component relative to the forming wheel.

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 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 forming, the forming wheel is controlled to rotate to the steering direction of the corresponding bending radius, then the rotation is stopped, 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 profile, so that the profile is rotated and bent around the forming wheel, and the profile bending forming is realized;

the push bending processing means: setting the motion parameters of a bending wheel and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel are as follows: the angle of the circumferential motion of the bending wheel corresponding to the rotating track of the forming wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel and the pressing driven wheel corresponding to the rotating track of the forming wheel; the forming wheel is controlled to rotate, in the section pushing process, the bending wheel is controlled to move according to the motion parameters of the set bending wheel, the pressing driving wheel and the pressing driven wheel are controlled to move according to the motion parameters of the set pressing wheel assembly, the section rotates and bends between the forming wheel and the bending wheel, and the bending forming of the section is achieved;

the roll bending processing means: setting the motion parameters of a bending wheel and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel are as follows: the angle of the circumferential motion of the bending wheel corresponding to the rotating track of the forming wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel and the pressing driven wheel corresponding to the rotating track of the forming wheel; the forming wheel is controlled to rotate, the bending wheel is controlled to move according to the set motion parameters of the bending wheel, and the pressing driving wheel and the pressing driven wheel are controlled to move according to the set motion parameters of the pressing wheel assembly, so that the pressing driven wheel, the forming wheel and the bending wheel interact with each other to roll and bend the conveyed section on the section, and the bending forming of the section is realized.

The invention also comprises the step of carrying out secondary bending and shaping processing on the section bar which is bent by the push bending processing;

the secondary bending and shaping processing steps are as follows: setting the motion parameters of a bending wheel and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel are as follows: the angle of the circumferential motion of the bending wheel corresponding to the rotating track of the forming wheel and the displacement of the connecting line direction of the center of the bending wheel and the center of the forming wheel; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel and the pressing driven wheel corresponding to the rotating track of the forming wheel; and controlling the forming wheel to rotate, controlling the bending wheel to move according to the set motion parameters of the bending wheel, and controlling the pressing driving wheel and the pressing driven wheel to move according to the set motion parameters of the pressing wheel assembly, so that the pressing driven wheel, the forming wheel and the bending wheel interact to roll and bend the section which is just machined, and the secondary bending and shaping processing of the section is realized.

The second scheme is as follows:

when the forming wheel is set to be circular, the one-time processing of variable curvature bending of the section bar conveyed to the section bar bending station on the same operation platform is realized by adjusting the positions of the winding wheel assembly and the material pressing wheel assembly relative to the forming wheel and controlling the rotation or stop of the forming wheel, and the one-time processing refers to the following steps: the bending processing, the bending pushing processing or the bending rolling processing are carried out on the section bar by adjusting the positions of the bending wheel assembly and the material pressing wheel assembly relative to the forming wheel and controlling the forming wheel to rotate or stop, and the bending pushing processing, the bending rolling processing or the combination of any processing technology is adopted to realize the one-time processing of variable-curvature bending on the section bar conveyed to the section bar bending station on the same operation platform.

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 perform push bending processing or roll bending processing or random combination processing on the section, and 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 component to do circular motion by taking the center of the forming wheel as a circle center, and controlling the bending wheel component to move along the connecting line direction of the center of the bending wheel component and the center of the forming wheel so as to adjust the position of the bending wheel component relative to the forming wheel.

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 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; 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 bending wheel to be attached to the conveyed section bar so that the section bar is rotated and bent around the forming wheel to realize the bending forming of the section bar;

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; controlling the forming wheel to rotate, and in the process of pushing the section bar, the section bar rotates and bends between the forming wheel and the bending wheel to realize the bending and forming of the section bar;

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.

The invention also comprises the step of carrying out secondary bending and shaping processing on the section bar which is bent by the push bending processing; the secondary bending and shaping processing steps are as follows: 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 controlling the forming wheel to rotate, and controlling the pressing driven wheel 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 to roll and bend the profile which is just processed, and the secondary bending and shaping processing of the profile is realized.

A bending mechanism for profile variable curvature is characterized in that: comprises a headstock, a pressing wheel component, a winding wheel component and a forming wheel component provided with a forming wheel; the forming wheel assembly is arranged on the machine head seat, and the forming wheel is a driving wheel; the pressing wheel assembly is arranged on the machine head seat and can horizontally move along the direction vertical to the profile conveying direction and the profile conveying direction; the winding wheel component is arranged on the headstock and can perform circular motion by taking the center of the forming wheel as the center of a circle, and the winding wheel component can move along the direction of a connecting line between the center of the winding wheel component and the center of the forming wheel; the positions among the forming wheel, the pressing wheel assembly and the winding wheel assembly are used as section bending stations; when the bending machine works, the one-time processing of the variable-curvature bending of the section bar is realized by adjusting the positions of the winding wheel component and the material pressing wheel component relative to the forming wheel and controlling the rotation or stop of the forming wheel;

the forming wheel is a round forming wheel, an oval forming wheel or a special-shaped wheel.

The forming wheel is set as a driving part and is round, oval or special, so that the bending processing, the push bending processing or the roll bending processing of various curvatures can be met, when the bending processing of different curvatures is required to be carried out on the section bar, the forming wheel can be set to be oval or special, the forming wheel stops when rotating to the required radius to turn, the bending processing is carried out, and the turning of the forming wheel can be continuously adjusted to carry out the bending processing of different curvatures; when the profile needs to be subjected to bending processing with fixed curvature, the forming wheel can be set to be circular.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the bending method of the variable curvature of the section bar can realize one-time processing of the variable curvature bending of the section bar, thereby improving the forming efficiency of the section bar, ensuring the forming quality and precision of the section bar and reducing the processing cost of the bending of the section bar.

2. The bending mechanism for the variable-curvature section bar has compact structure and strong practicability, and can be used for carrying out variable-curvature bending processing on the section bar.

Drawings

FIG. 1 is a schematic view of the bending mechanism of the present invention (wherein the arrow is the direction of profile transport);

FIG. 2 is a top view of the bending mechanism of the present invention;

FIG. 3 is a side schematic view of the bending mechanism of the present invention;

FIG. 4 is a schematic view in the direction C-C of FIG. 2;

FIG. 5 is a schematic view in the direction D-D of FIG. 2;

FIG. 6 is a schematic view in the direction E-E of FIG. 2;

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

FIG. 8 is a schematic view of a bending wheel module of the bending mechanism of the present invention;

FIG. 9 is a schematic view of a pinch roller assembly in the bending mechanism of the present invention;

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

FIG. 11 is a schematic view taken along line A-A of FIG. 10;

FIG. 12 is a schematic view of a bending apparatus with the bending mechanism of the present invention;

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

FIG. 14 is a schematic view of a bending mechanism according to a second 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

The present embodiment will be described below by taking the case where the forming wheel is circular.

As shown in fig. 1 to 12, the bending apparatus with a bending mechanism of the present invention 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 direction of the connecting line of the center of the winding wheel component 7 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 bending method of the variable-curvature section bar comprises the following steps: the material pressing wheel assembly 6, the bending wheel assembly 7 and the forming wheel assembly 8 with the forming wheel 8.1 are arranged on the same operating platform, the forming wheel 8.1 is arranged as a driving part, the forming wheel 8.1 is arranged to be circular, and the one-time processing of variable-curvature bending of the section material conveyed to the section material bending station on the same operating platform is realized 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.

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. 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.

The bending procedure of the invention also comprises the step of carrying out secondary bending and shaping processing on the section which is bent by the push bending processing. The secondary bending and shaping processing steps are as follows: controlling a 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 horizontally moving the pressing driven wheel 6.15 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 to roll and bend the profile which is just processed, and the secondary bending and shaping processing of the profile is realized.

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 adopts the secondary bending shaping processing step to carry out the secondary bending shaping processing 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 secondary bending and sizing process is used to perform multiple bending processes on the middle part with a large curvature radius, and the curvature is corrected, so as to improve the stability of the large curvature radius bending forming, as shown in fig. 13 (e).

Example two

The present embodiment is different from the first embodiment only in that: as shown in fig. 14, the forming wheel of the present embodiment is oval.

The bending method of the variable-curvature profile of the embodiment is as follows: the one-time processing of the variable-curvature bending of the section is realized by adjusting the positions of the winding 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.

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.

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. According to the curvature of the formed section, the forming wheel 8.1 is controlled to rotate to the steering direction of the corresponding bending radius, then the rotation is stopped, 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, 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: setting the motion parameters of a bending wheel 7.8 and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel 7.8 are as follows: the angle of the circular motion of the bending wheel 7.8 corresponding to the rotating track of the forming wheel 8.1 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; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel 6.9 and the pressing driven wheel 6.15 corresponding to the rotating track of the forming wheel 8.1; the forming wheel 8.1 is controlled to rotate, in the section bar pushing process, the bending wheel 7.8 is controlled to move according to the motion parameters of the set bending wheel 7.8, the pressing driving wheel 6.9 and the pressing driven wheel 6.15 are controlled to move according to the motion parameters of the set pressing wheel assembly, the section bar rotates and bends between the forming wheel 8.1 and the bending wheel 7.8, and the bending forming of the section bar is achieved.

Roll bending processing: setting the motion parameters of a bending wheel 7.8 and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel 7.8 are as follows: the angle of the circular motion of the bending wheel 7.8 corresponding to the rotating track of the forming wheel 8.1 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; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel 6.9 and the pressing driven wheel 6.15 corresponding to the rotating track of the forming wheel 8.1; the forming wheel 8.1 is controlled to rotate, the bending wheel 7.8 is controlled to move according to the motion parameters of the set bending wheel 7.8, and the pressing driving wheel 6.9 and the pressing driven wheel 6.15 are controlled to move according to the motion parameters of the set pressing wheel component, 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 section on the section, and the bending forming of the section is realized.

The bending method also comprises the step of carrying out secondary bending and shaping processing on the section which is bent by the push bending processing. The secondary bending and shaping processing steps are as follows: setting the motion parameters of a bending wheel 7.8 and the motion parameters of a pressing wheel component according to the formed curvature of the section; the motion parameters of the bending wheel 7.8 are as follows: the angle of the circular motion of the bending wheel 7.8 corresponding to the rotating track of the forming wheel 8.1 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; the motion parameters of the material pressing wheel component are as follows: the displacement of the pressing driving wheel 6.9 and the pressing driven wheel 6.15 corresponding to the rotating track of the forming wheel 8.1; the forming wheel 8.1 is controlled to rotate, the bending wheel 7.8 is controlled to move according to the motion parameters of the set bending wheel 7.8, and the pressing driving wheel 6.9 and the pressing driven wheel 6.15 are controlled to move according to the motion parameters of the set pressing wheel component, so that the pressing driven wheel 6.15, the forming wheel 8.1 and the bending wheel 7.8 are interacted to roll and bend the section which is just processed, and secondary bending and shaping processing of the section are realized.

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 adopts the secondary bending shaping processing step to carry out the secondary bending shaping processing on the section bar. The steps of the bending method of the present embodiment are as follows:

(1) and the first small-curvature radius forming of the section is realized through bending.

(2) And the large-curvature radius molding of the section is realized through push bending processing.

(3) And controlling the pressing wheel assembly and the winding wheel assembly to reset.

(4) And the second small-curvature radius forming of the section is realized through bending processing.

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 secondary bending and shaping processing is used for carrying out multiple times of bending processing on the part bent by the large curvature radius in the middle, and the curvature is corrected, so that the stability of the large curvature radius bending forming is improved.

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.