Profile forming method adopting wrapping type forming process

Abstract

The invention discloses a sectional material forming method adopting a wrapping type forming process, and belongs to the technical field of metal forming. A metal belt can be rolled in a wrapping mode through a first roller assembly, so that the whole metal belt is in an arch bridge shape; then the two symmetrical free edges of the formed arch-bridge-shaped metal belt are continuously rolled in a wrapping mode through a second roller assembly to form back-bending parts, then the arch bridge part of the metal belt is rolled in a folded mode, the two back-bending parts are promoted to be attached, and the metal belt is in the final rolling state; and finally, the state of the metal belt in the final form is kept through a third roller assembly, so that the redundant stress of the formed metal belt is eliminated, the springback phenomenon of the metal belt due to the stress is prevented, and the forming efficiency and precision of the metal belt are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of metal forming, and in particular relates to a profile forming method using a wrapping forming process. Background Art

[0002] Steel profiles have the advantages of strong bending resistance, simple construction, cost savings and light structure. They are widely used in civil and industrial building structures, industrial plants and modern high-rise buildings. When processing profiles, the steel profiles need to be processed into long strip-shaped billets in advance. In order to meet the needs of different processing techniques, the billets need to be bent to form various curved structures.

[0003] In the prior art, linear motion parts are generally used to drive push plates to bend the blanks cut into short strips. Due to the complex structure of the profile, personnel are required to constantly change the bending angle, resulting in low bending efficiency and certain safety hazards.

[0004] A wrapping bending method is now proposed that can form long strip blanks into complex shapes without cutting. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a profile forming method using a wrapping forming process to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A profile forming method using a wrapping forming process comprises the following steps: S1, wrapping and rolling the metal strip by a first roller assembly, so that the metal strip is in an arch bridge shape as a whole; S2, using a second roller assembly to continuously roll the two symmetrical free edges of the metal strip formed in S1 to form a bend, and then folding and rolling the arch bridge of the metal strip to make the two bends fit together, so that the metal strip forms the final shape of the roll; S3. The metal strip in the final shape formed in S2 is maintained in a state by a third roller assembly to eliminate stress of the metal strip.

[0007] On the basis of the above technical solution, the present invention also provides the following optional technical solution: Further technical solution: The specific steps of wrapping and rolling the metal strip by the first roller assembly to make the metal strip as a whole into an arch bridge shape are as follows: The first roller assembly is used to perform wrapping bending on the metal strip to form a first preformed part including a first bending edge, a second bending edge and a third bending edge.

[0008] Further technical solution: the two second bent edges and the two third bent edges are symmetrically distributed on both sides of the first bent edge.

[0009] Further technical solution: The specific steps of continuously rolling the two symmetrical free edges of the metal strip formed by S1 by the second roller assembly to form the return bend are: S201, using a second roller assembly to synchronously bend two third bending edges to form a third bending edge including a fourth bending edge, a fifth bending edge and a sixth bending edge; S202, using a second roller assembly to continuously bend the first preformed part formed in S201, firstly causing the two fourth bending edges to be correspondingly attached to the two second bending edges and straightening the fifth bending edge and the sixth bending edge to form a seventh bending edge, and secondly further bending the seventh bending edge to form a seventh bending edge including an eighth bending edge, a ninth bending edge and a tenth bending edge; S203, using a second roller assembly to continuously bend the first preformed piece formed in S202, firstly causing the two second bending edges to form a second bending edge including a second bending edge and a second bending edge, wherein the angles between the second bending edges and the second bending edges are both ninety degrees, and secondly bending the first preformed piece again, causing the angles between the two second bending edges and the first bending edge to be both ninety degrees and the two second bending edges to be symmetrically arranged relative to the first bending edge; S204, using a second roller assembly to continuously bend the first preformed piece formed in S203, so that the two second bent edges are attached to the first bent edge.

[0010] Further technical solution: In the final form in S1, the angles between the second bending edge and the first bending edge and the third bending edge are all one hundred and five degrees.

[0011] Further technical solution: In the final form of S201, the angle between the fourth bending edge and the second bending edge is eighteen degrees, and the angles between the fifth bending edge and the fourth bending edge and the sixth bending edge are one hundred and nine degrees and one hundred and sixty-five degrees respectively.

[0012] Further technical solution: In the final form in S203, the angles between the eighth bending edge and the fourth bending edge and the ninth bending edge are 105 degrees and 74 degrees respectively, and the angle between the tenth bending edge and the ninth bending edge is 75 degrees.

[0013] Further technical solution: The first roller assembly, the second roller assembly and the third roller assembly can all form a bending cavity to perform wrapping bending on the steel profile.

[0014] A device for forming steel profiles using the above-mentioned profile forming method using a wrapping forming process, comprising several groups of roller assemblies for wrapping and bending the steel profiles, wherein a group of roller groups in the second roller assembly comprises a support frame, an upper roller, a lower roller, a left roller and a right roller, the upper roller, the lower roller, the left roller and the right roller are all installed on the support frame through an electric roller shaft, and the upper roller, the lower roller, the left roller and the right roller can enclose an extrusion cavity for wrapping and rolling the metal strip.

[0015] The present invention provides a profile forming method using a wrapping forming process, which has the following beneficial effects compared with the prior art: The present invention can wrap-roll the metal strip through the first roller assembly, so that the metal strip is in an arch shape as a whole, and then wrap and continuously roll the two symmetrical free edges of the metal strip in the arch shape after forming through the second roller assembly to form a bend portion, and then fold and roll the arch portion of the metal strip to make the two bend portions fit together, so that the metal strip forms the final shape of the rolling, and finally maintain the state of the metal strip in the final shape through the third roller assembly to eliminate the stress of the metal strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the profile bending steps in S1 of the present invention.

[0017] Figure 2 It is a schematic diagram of the profile bending step in S201 of the present invention.

[0018] Figure 3 It is a schematic diagram of the profile bending step in S202 of the present invention.

[0019] Figure 4 It is a schematic diagram of the profile bending step in S203 of the present invention.

[0020] Figure 5 It is a schematic diagram of the profile bending step in S204 of the present invention.

[0021] Figure 6 It is a schematic diagram of the profile bending steps in S3 of the present invention.

[0022] Figure 7 It is a schematic structural diagram of a group of roller wheels in the present invention.

[0023] Figure 8 For the present invention Figure 7 Schematic diagram of the overall structure of the roller group.

[0024] Fig. 9 For the present invention Figure 8 A-section structure enlarged schematic diagram.

[0025] Notes on figure numbers: 1. Metal strip; 2. First preform; 201. First bending edge; 202. Second bending edge; 203. Third bending edge; 2031. Fourth bending edge; 2032. Fifth bending edge; 2033. Sixth bending edge; 2034. Seventh bending edge; 20341. Eighth bending edge; 20342. Ninth bending edge; 20343. Tenth bending edge; 3. Support frame; 4. Upper roller; 5. Lower roller; 6. Left roller; 7. Right roller; 8. Electric roller; 9. Extrusion cavity. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0028] See also Figure 1 to Figure 6 , provided in one embodiment of the present invention, is a profile forming method using a wrapping forming process, comprising the following steps: S1, wrapping and rolling the metal strip 1 by a first roller assembly, so that the metal strip 1 is in an arch bridge shape as a whole; S2, the second roller assembly continuously rolls the two symmetrical free edges of the metal strip 1 formed in S1 to form a bend, and then rolls the arch bridge portion of the metal strip 1 in half to make the two bends fit together, so that the metal strip 1 forms the final shape of the roll; S3, maintaining the metal strip 1 in the final form formed in S2 by a third roller assembly to eliminate the stress of the metal strip 1; The specific steps of rolling the metal strip 1 by the first roller assembly to make the metal strip 1 into an arch bridge shape as a whole are as follows: The metal strip 1 is bent by using a first roller assembly to form a first preformed part 2 including a first bending edge 201, a second bending edge 202 and a third bending edge 203, wherein the two second bending edges 202 and the two third bending edges 203 are symmetrically distributed on both sides of the first bending edge 201; The specific steps of continuously rolling the two symmetrical free edges of the metal strip 1 after S1 forming by the second roller assembly to form the return bend are as follows: S201, using a second roller assembly to synchronously bend two third bending edges 203 to form a third bending edge 203 including a fourth bending edge 2031, a fifth bending edge 2032 and a sixth bending edge 2033; S202, using a second roller assembly to continuously bend the first preform 2 formed in S201, firstly causing the two fourth bending edges 2031 to be correspondingly attached to the two second bending edges 202 and straightening the fifth bending edge 2032 and the sixth bending edge 2033 to form a seventh bending edge 2034, and then further bending the seventh bending edge 2034 to form a seventh bending edge 2034 including an eighth bending edge 20341, a ninth bending edge 20342 and a tenth bending edge 20343; S203, using a second roller assembly to continuously bend the first preformed piece 2 formed in S202, firstly causing the two second bending edges 202 to form a second bending edge 202 including a second bending edge 2021 and a second bending edge 2022, wherein the angles between the second bending edge 2022 and the second bending edge 2021 are both ninety degrees, and secondly bending the first preformed piece 2 again, causing the angles between the two second bending edges 2021 and the first bending edge 201 to be both ninety degrees and the two second bending edges 2021 to be symmetrically arranged relative to the first bending edge 201; S204, using a second roller assembly to continuously bend the first preform 2 formed in S203, so that the two second bending edges 2021 are attached to the first bending edge 201; Wherein, in the final form in S1, the included angles between the second bending edge 202 and the first bending edge 201 and the third bending edge 203 are all 105 degrees; Among them, in the final form in S201, the angle between the fourth bending edge 2031 and the second bending edge 202 is 18 degrees, and the angles between the fifth bending edge 2032 and the fourth bending edge 2031 and the sixth bending edge 2033 are 109 degrees and 165 degrees respectively; Among them, in the final form in S203, the angles between the eighth bending edge 20341 and the fourth bending edge 2031 and the ninth bending edge 20342 are 105 degrees and 74 degrees respectively, and the angle between the tenth bending edge 20343 and the ninth bending edge 20342 is 75 degrees.

[0029] Wherein, the first roller assembly, the second roller assembly and the third roller assembly can form a bending cavity to perform wrapping bending forming on the steel profile; See also Figure 7 to Figure 9, a forming device for steel profiles, comprising several groups of roller assemblies for wrapping and bending the steel profiles, wherein a group of roller groups in the second roller assembly comprises a support frame 3, an upper roller 4, a lower roller 5, a left roller 6 and a right roller 7, the upper roller 4, the lower roller 5, the left roller 6 and the right roller 7 are all installed on the support frame 3 through an electric roller shaft 8, and the upper roller 4, the lower roller 5, the left roller 6 and the right roller 7 can enclose an extrusion cavity 9 for wrapping and rolling the metal strip 1.

[0030] In the embodiment of the present invention, two electric roller shafts 8 correspondingly drive the upper roller 4 and the lower roller 5 to rotate in opposite directions of movement in the vertical direction, and the other two electric roller shafts 8 correspondingly drive the left roller 6 and the right roller 7 to rotate in the horizontal direction. At this time, the extrusion cavity 9 formed by the upper roller 4, the lower roller 5, the left roller 6 and the right roller 7 can roll-form the metal strip 1 and can push the metal strip 1 to perform linear movement.

[0031] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A profile forming method using a wrapping forming process, characterized in that: The following steps are involved: S1, performing wrapping rolling on the metal strip (1) by means of a first roller assembly, so that the metal strip (1) is formed into an arch bridge shape as a whole; S2, using a second roller assembly to continuously roll the two symmetrical free edges of the metal strip (1) formed in S1 to form a bend, and then folding and rolling the arch bridge portion of the metal strip (1) to facilitate the two bends to fit together, so that the metal strip (1) forms a final rolled shape; S3, maintaining the state of the metal strip (1) in the final form formed in S2 by a third roller assembly, so as to eliminate the stress of the metal strip (1); The specific steps of wrapping and rolling the metal strip (1) by the first roller assembly to make the metal strip (1) as a whole into an arch bridge shape are: The first roller assembly is used to perform wrapping bending on the metal strip (1) to form a first prefabricated part (2) comprising a first bending edge (201), a second bending edge (202) and a third bending edge (203).

2. The profile forming method using the wrapping forming process according to claim 1 is characterized in that: The two second bent edges (202) and the two third bent edges (203) are symmetrically distributed on both sides of the first bent edge (201).

3. The profile forming method using the wrapping forming process according to claim 2 is characterized in that: The specific steps of continuously rolling the two symmetrical free edges of the metal strip (1) formed by S1 by the second roller assembly to form the return bend are as follows: S201, using a second roller assembly to synchronously bend two third bending edges (203) to form a third bending edge (203) comprising a fourth bending edge (2031), a fifth bending edge (2032), and a sixth bending edge (2033); S202, using a second roller assembly to continuously bend the first preform (2) formed in S201, firstly causing the two fourth bending edges (2031) to be correspondingly attached to the two second bending edges (202) and straightening the fifth bending edge (2032) and the sixth bending edge (2033) to form a seventh bending edge (2034), and secondly further bending the seventh bending edge (2034) to form a seventh bending edge (2034) comprising an eighth bending edge (20341), a ninth bending edge (20342) and a tenth bending edge (20343); S203, using a second roller assembly to continuously bend the first preformed part (2) formed in S202, firstly causing the two second bending edges (202) to both form a second bending edge (202) comprising a second bending edge (2021) and a second bending edge (2022), wherein the angle between the second bending edge (2022) and the second bending edge (2021) is both ninety degrees, and secondly bending the first preformed part (2) again, causing the angle between the two second bending edges (2021) and the first bending edge (201) to both be ninety degrees, and the two second bending edges (2021) to be symmetrically arranged relative to the first bending edge (201); S204, using a second roller assembly to continuously bend the first preformed member (2) formed in S203, so that the two second bent edges (2021) are in contact with the first bent edge (201).

4. The profile forming method using the wrapping forming process according to claim 3 is characterized in that: In the final form in S1, the included angles between the second bending edge (202) and the first bending edge (201) and the third bending edge (203) are all one hundred and five degrees.

5. The profile forming method using the wrapping forming process according to claim 4 is characterized in that: In the final form of S201, the angle between the fourth bending edge (2031) and the second bending edge (202) is eighteen degrees, and the angles between the fifth bending edge (2032) and the fourth bending edge (2031) and the sixth bending edge (2033) are one hundred and nine degrees and one hundred and sixty-five degrees respectively.

6. The profile forming method using the wrapping forming process according to claim 5, characterized in that: In the final form in S203, the angles between the eighth bending edge (20341) and the fourth bending edge (2031) and the ninth bending edge (20342) are 105 degrees and 74 degrees respectively, and the angle between the tenth bending edge (20343) and the ninth bending edge (20342) is 75 degrees.

7. The profile forming method using the wrapping forming process according to claim 6, characterized in that: The first roller assembly, the second roller assembly and the third roller assembly can all form a bending cavity to perform wrapping bending forming on the steel profile.

8. A device for forming steel profiles using the profile forming method using the wrapping forming process as claimed in claim 7, comprising a plurality of roller assemblies for wrapping and bending the steel profiles, characterized in that: A group of rollers in the second roller assembly comprises a support frame (3), an upper roller (4), a lower roller (5), a left roller (6) and a right roller (7); the upper roller (4), the lower roller (5), the left roller (6) and the right roller (7) are all mounted on the support frame (3) via a motorized roller shaft (8); the upper roller (4), the lower roller (5), the left roller (6) and the right roller (7) can enclose an extrusion cavity (9) for wrapping and rolling the metal strip (1).

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