Plate multi-angle rotary bending forming device

Abstract

The invention relates to a multi-angle rotary bending forming device for plates. The multi-angle rotary bending forming device comprises a feeding assembly and a supporting assembly. The feeding assembly comprises a pressing table and a forming male die, and the forming male die is arranged on the pressing table. The supporting assembly comprises a supporting table, a forming female die and two forming bending rollers, a forming hole corresponding to the forming male die is formed in the supporting table, the forming female die is arranged in the forming hole, two containing grooves communicated with the forming hole are formed in the supporting table, each containing groove extends in the axial direction of the corresponding forming bending roller, and the two containing grooves are symmetrical with the defined axis as the symmetry axis. The two forming bending rollers are in one-to-one correspondence with the two containing grooves, the forming bending rollers are rotatably arranged in the containing grooves, each forming bending roller is provided with a bending groove extending in the axial direction of the forming bending roller, and an opening of each bending groove faces the forming hole. The press shape of the forming male die and the forming female die is matched with the rotary guide of the forming bending roller, so that the composite process of plate middle shaping and edge continuous bending is realized, and repeated die change is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of workpiece bending forming, in particular to a plate multi-angle rotary bending forming device. BACKGROUND

[0002] Industrial steam turbines are widely used in petroleum refining, chemical industry, metallurgy, power, light industry, building materials, food, sugar and other industries to drive various rotating machines in industrial processes, such as fans, compressors, presses and pumps.

[0003] Multi-angle bending workpiece is one of the parts on the industrial steam turbine, and a set of industrial steam turbine is composed of thousands of multi-angle bending workpieces. The conventional plate bending forming usually adopts a fixed angle die, and multiple dies need to be replaced to realize multi-angle bending, resulting in low production efficiency and large positioning cumulative error. For complex curved surfaces or workpieces requiring continuous variable angle, the fixed angle die is difficult to complete the forming in one clamping. SUMMARY

[0004] Based on the above description, the present application provides a plate multi-angle rotary bending forming device, which aims to solve the problem that the existing fixed angle die is difficult to complete the plate multi-angle bending forming at one time.

[0005] The technical scheme for solving the above technical problems is as follows: A plate multi-angle rotary bending forming device, comprising: A feeding assembly comprising a press table and a forming punch, the forming punch being arranged on the press table; A supporting assembly comprising a supporting table, a forming die and two forming bending rollers, the supporting table being arranged opposite to the press table along a first direction, the supporting table being provided with a forming hole corresponding to the forming punch, the forming die being arranged in the forming hole, the supporting table being provided with two accommodating grooves in communication with the forming hole, each of the accommodating grooves extending along the axial direction of the forming bending roller, the two accommodating grooves being symmetric about a defined axis as the symmetry axis, the two forming bending rollers corresponding to the two accommodating grooves one by one, the forming bending rollers being rotatably arranged in the accommodating grooves, each of the forming bending rollers being provided with a bending groove extending along the axial direction thereof, the opening of the bending groove facing the forming hole.

[0006] On the basis of the above technical scheme, the present application can also be improved as follows.

[0007] Further, the press table comprises a first transition piece and a forming fixed plate arranged in sequence towards the supporting table, the forming fixed plate being detachably connected with the first transition piece, the forming fixed plate being provided with a through hole through which the forming punch passes.

[0008] Further, the support assembly comprises at least two elastic members, two of the elastic members correspond to two of the shaped bending rollers one by one, one end of the elastic member is connected to the shaped bending roller, and the other end of the elastic member is connected to the support table.

[0009] Further, the elastic member is a tension spring.

[0010] Further, the support table comprises a second transition member and a shaped seat arranged in sequence in a direction facing the pressing table, a first accommodating hole is formed in a side of the second transition member close to the shaped seat, a second accommodating hole is formed in the shaped seat and communicates with the accommodating hole, the first accommodating hole and the second accommodating hole jointly form the shaped hole, the accommodating groove is formed in the shaped seat, and the other end of the elastic member is connected to the shaped seat.

[0011] Further, the shaped seat comprises two seat bodies, the two seat bodies are axisymmetric with the defined axis as the axis of symmetry, a gap between the two seat bodies forms the second accommodating hole, and the accommodating groove is formed in the seat body one by one.

[0012] Further, the support table comprises at least two pairs of limiting blocks, two pairs of the limiting blocks correspond to two of the seat bodies one by one, one end of the limiting block is connected to the seat body, and one pair of the limiting blocks is located at two ends of the shaped bending roller one by one.

[0013] Further, the support table comprises two clamping plates, two of the clamping plates are arranged on a side of two of the shaped seats facing the pressing table one by one.

[0014] Further, the length of the clamping plate in the second direction is less than the length of the shaped seat in the second direction, so that a step is formed in a region of the shaped seat not covered by the clamping plate, and the second direction is perpendicular to the first direction.

[0015] Further, the support table comprises two side blocks, two of the side blocks are arranged on a side of two of the shaped seats away from the shaped hole one by one.

[0016] Compared with the prior art, the technical scheme of the present application has the following beneficial technical effects: (1) The present application realizes the composite process of shaping the middle part of the plate and continuously bending the edge through the rotation guidance of the shaped bending roller by the shaped punch and the shaped die, and avoids multiple die changes.

[0017] (2) The elastic member provides radial pre-tightening force to the forming bending roller, the elastic member stretches when the forming bending roller is pressed, and automatically returns to the initial position after the plate material is separated, ensuring that the position of the forming bending roller is consistent before each forming, and improving the repeat accuracy.

[0018] (3) The side stopper rigidly blocks the seat body to displace in the second direction. When the plate material is subjected to excessive force on one side, the side stopper can withstand strong extrusion stress, so that the displacement amount of the seat body in the second direction is significantly improved, and the forming consistency of complex workpieces is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structural schematic view of a plate multi-angle rotary bending forming device provided in an embodiment of the present application. Fig. 2 It is a multi-angle bending forming effect drawing of a plate multi-angle rotary bending forming device provided in an embodiment of the present application.

[0020] BRIEF DESCRIPTION OF DRAWINGS L, define the axis; 10, feeding assembly; 11, pressing table; 111, first transition piece; 112, forming fixed plate; 1121, through hole; 12, forming punch; 121, forming protrusion; 1211, avoiding groove; 20, supporting assembly; 21, supporting table; 211, forming hole; 212, accommodating groove; 213, second transition piece; 2131, first accommodating hole; 214, forming seat; 2141, second accommodating hole; 2142, seat body; 215, limiting block; 216, clamping plate; 217, side stopper; 22, forming recess; 221, forming recess; 23, forming bending roller; 231, bending recess; 232, limiting piece; 24, elastic member; 30, plate material. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The drawings show embodiments of the present application. However, the present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0023] It will be understood that the terms spatially relative to one another, such as "under", "below", "lower", "over", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "under" can encompass both an orientation of over and under. The devices can also be oriented in the other directions (rotated 90 degrees or at other orientations), and the spatial descriptions used herein can be interpreted accordingly.

[0024] As used herein, the singular form "a", "an" and "the" include plural references unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used herein, specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0025] Referring to Figs. 1-2 As shown, the present application provides a technical solution: a plate multi-angle rotary bending forming device, comprising a feeding assembly 10 and a supporting assembly 20; the feeding assembly 10 comprises a pressing table 11 and a forming punch 12, the forming punch 12 is arranged on the pressing table 11; the supporting assembly 20 comprises a supporting table 21, a forming die 22 and two forming bending rollers 23, the supporting table 21 is arranged opposite to the pressing table 11 along a first direction, the supporting table 21 is provided with a forming hole 211 corresponding to the forming punch 12, the forming die 22 is arranged in the forming hole 211, the supporting table 21 is provided with two accommodating grooves 212 in communication with the forming hole 211, each of the accommodating grooves 212 extends along the axial direction of the forming bending roller 23, the two accommodating grooves 212 are symmetrically arranged about the defined axis L as the symmetry axis, the two forming bending rollers 23 correspond to the two accommodating grooves 212 one by one, the forming bending roller 23 is rotatably arranged in the accommodating groove 212, and the forming bending roller 23 is provided with a bending groove 231 extending along the axial direction of the forming bending roller 23, and the opening of the bending groove 231 faces the forming hole 211.

[0026] Exemplarily, the side of the forming punch 12 facing the forming die 22 is formed with a V-shaped forming protrusion 121, the forming protrusion 121 is provided with two V-shaped avoiding grooves 1211, the two avoiding grooves 1211 are symmetrically arranged about the defined axis L as the symmetry axis, and the side of the forming die 22 facing the forming punch 12 is provided with a V-shaped forming groove 221.

[0027] According to this embodiment, the plate 30 is placed between the forming punch 12 and the forming die 22. When the press table 11 is pressed down, the forming protrusion 121 of the forming punch 12 pushes the plate 30 to contact the forming groove 221 of the forming die 22, while the plate 30 slides into the bending groove 231 on both sides. As the forming protrusion 121 continues to press down, the plate 30 is shaped in the middle under the constraint of the forming groove 221, and the two sides are bent towards the avoidance groove 1211 of the forming punch 12 under the rotation guidance of the bending groove 231. In the process of bending the plate 30, the rotation freedom of the forming bending roller 23 changes the plate 30 bending process from sliding friction to rolling friction, and the symmetrical layout ensures that the two sides bend synchronously and offset the unilateral stress, avoiding workpiece distortion. Thus, through the rotation guidance of the forming punch 12 and the forming die 22 of the forming bending roller 23, the composite process of shaping the middle of the plate 30 and continuously bending the edge is realized, avoiding multiple die changes.

[0028] Referring to Figs. 1-2 As shown in some embodiments, the press table 11 includes a first transition piece 111 and a forming fixed plate 112 arranged in sequence facing the support table 21, the forming fixed plate 112 is detachably connected with the first transition piece 111, and the forming fixed plate 112 is provided with a through hole 1121 through which the forming punch 12 passes.

[0029] According to this embodiment, the detachable first transition piece 111 and the forming fixed plate 112 not only can be disassembled without the whole press table 11, but also can replace the forming punch 12 of different shapes to realize forming of different shapes. In the process of assembling the forming punch 12, the forming punch 12 is quickly centered and positioned through the through hole 1121, ensuring the positioning accuracy of the forming punch 12.

[0030] Referring to Figs. 1-2 As shown in some embodiments, the support assembly 20 includes at least two elastic members 24, the two elastic members 24 correspond to the two forming bending rollers 23 one by one, one end of the elastic member 24 is connected to the forming bending roller 23, and the other end of the elastic member 24 is connected to the support table 21.

[0031] For example, the elastic member 24 is a tension spring or the like.

[0032] According to this embodiment, the elastic member 24 provides a radial pre-tightening force to the forming bending roller 23, and the elastic member 24 stretches when the forming bending roller 23 is pressed, and automatically returns to the initial position after the plate 30 is detached, ensuring that the position of the forming bending roller 23 is consistent before each forming, improving the repeatability.

[0033] In particular, continuing to refer to Figs. 1-2As shown, one end of the elastic member 24 can be connected to the forming bending roller 23 by a fastener, and the other end of the elastic member 24 can be connected to the support table 21 by a fastener. The fastener can be a bolt or a screw, etc. Assuming that there are four elastic members 24, two elastic members 24 are arranged at each end of the forming bending roller 23.

[0034] Referring to Figs. 1-2 As shown, in some embodiments, the support table 21 comprises a second transition piece 213 and a forming seat 214 arranged in sequence facing the press table 11, the first accommodating hole 2131 is formed on the side of the second transition piece 213 close to the forming seat 214, the second accommodating hole 2141 is formed on the forming seat 214 and communicates with the accommodating hole, the first accommodating hole 2131 and the second accommodating hole 2141 jointly form the forming hole 211, the accommodating groove 212 is formed on the forming seat 214, and the other end of the elastic member 24 is connected to the forming seat 214.

[0035] For example, the forming seat 214 can be connected to the second transition piece 213 by a bolt or the like.

[0036] According to this embodiment, the second transition piece 213 and the forming seat 214 are detachably connected, which facilitates replacement of the forming seat 214.

[0037] Referring to Figs. 1-2 As shown, in some embodiments, the forming seat 214 comprises two seat bodies 2142, the two seat bodies 2142 are symmetrically arranged with the axis L as the axis of symmetry, the gap between the two seat bodies 2142 forms the second accommodating hole 2141, the two accommodating grooves 212 are formed on the two seat bodies 2142 in one-to-one correspondence, and the other end of the elastic member 24 is connected to the seat body 2142.

[0038] For example, the seat body 2142 can be connected to the second transition piece 213 by a bolt or the like.

[0039] According to this embodiment, the split seat body 2142 can be detached from the second transition piece 213, and the width of the second accommodating hole 2141 can be changed by adjusting the gap, which can not only adapt to the size of different forming punches 12, but also match different widths of the plate 30.

[0040] Referring to Figs. 1-2 As shown, in some embodiments, the support table 21 comprises at least two pairs of limiting blocks 215, the two pairs of limiting blocks 215 correspond to the two seat bodies 2142 in one-to-one correspondence, one end of the limiting block 215 is connected to the seat body 2142, and one pair of limiting blocks 215 is located at the two ends of the forming bending roller 23 in one-to-one correspondence.

[0041] According to the embodiment, the limiting block 215 can limit the forming bending roller 23 in the accommodating groove 212, which can eliminate forming errors caused by axial displacement of the bending roller and prevent the forming bending roller 23 from being pulled out of the accommodating groove 212.

[0042] In some embodiments, the limiting block 215 is provided with a limiting piece 232.

[0043] For example, the limiting piece 232 can be a cylindrical pin or the like.

[0044] According to the embodiment, when the forming bending roller 23 is returned to the initial position, the limiting piece 232 can limit the movement track of the forming bending roller 23, prevent the forming bending roller 23 from excessive rotation, ensure the position of the forming bending roller 23 to be consistent before each forming, and improve the repeat accuracy.

[0045] Referring to Figs. 1-2 In some embodiments, the support table 21 includes two clamping plates 216, which are arranged on the sides of the two forming seats 214 facing the press table 11.

[0046] According to the embodiment, the plate 30 is arranged between the two clamping plates 216, and the clamping plates 216 can prevent the plate 30 from escaping in the second direction during the pressing of the forming punch 12.

[0047] Referring to Figs. 1-2 In some embodiments, the length of the clamping plate 216 in the second direction is less than the length of the forming seat 214 in the second direction, so that the area of the forming seat 214 not covered by the clamping plate 216 forms a step, and the second direction is perpendicular to the first direction.

[0048] According to the embodiment, the step supports the plate 30 to facilitate the limitation of the plate 30 by the two clamping plates 216.

[0049] Referring to Figs. 1-2 Figs. 1-2 In some embodiments, the support table 21 includes two side blocks 217, which are arranged on the sides of the two forming seats 214 away from the forming hole 211.

[0050] According to the embodiment, the side block 217 rigidly blocks the displacement of the seat body 2142 in the second direction. When the plate 30 is subjected to excessive force on one side, the side block 217 can withstand strong extrusion stress to control the displacement of the seat body 2142 in the second direction, thereby improving the forming consistency of complex workpieces.

[0051] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-angle rotary bending forming device for sheet metal, characterized in that, The application relates to a feeding assembly (10) and a supporting assembly (20). The feeding assembly (10) comprises a press table (11) and a forming punch (12), and the forming punch (12) is arranged on the press table (11). The supporting assembly (20) comprises a supporting table (21), a forming die (22) and two forming bending rollers (23), the supporting table (21) is arranged opposite to the press table (11) along a first direction, the supporting table (21) is provided with a forming hole (211) corresponding to the forming punch (12), the forming die (22) is arranged in the forming hole (211), the supporting table (21) is provided with two accommodating grooves (212) in communication with the forming hole (211), each of the accommodating grooves (212) extends along the axial direction of the forming bending roller (23), the two accommodating grooves (212) are symmetrically arranged along a defined axis (L) as the symmetry axis, the two forming bending rollers (23) correspond to the two accommodating grooves (212) one by one, the forming bending roller (23) is rotatably arranged in the accommodating groove (212), and the forming bending roller (23) is provided with a bending groove (231) extending along the axial direction of the forming bending roller (23), and the opening of the bending groove (231) faces the forming hole (211).

2. The multi-angle rotary bending forming apparatus for a sheet material according to claim 1, characterized by The press table (11) comprises a first transition piece (111) and a forming fixed plate (112) arranged in sequence and facing the supporting table (21), the forming fixed plate (112) is detachably connected with the first transition piece (111), and the forming fixed plate (112) is provided with a through hole (1121) through which the forming punch (12) passes.

3. The multi-angle rotary bending forming apparatus for a sheet material according to claim 1, characterized by The supporting assembly (20) comprises at least two elastic members (24), the two elastic members (24) correspond to the two forming bending rollers (23) one by one, one end of the elastic member (24) is connected with the forming bending roller (23), and the other end of the elastic member (24) is connected with the supporting table (21).

4. The multi-angle rotary bending forming apparatus for a sheet material according to claim 3, characterized by The elastic member (24) is a tension spring.

5. The multi-angle rotary bending forming apparatus for a sheet material according to claim 3, characterized by The supporting table (21) comprises a second transition piece (213) and a forming seat (214) arranged in sequence and facing the press table (11), the second transition piece (213) is provided with a first accommodating hole (2131) on the side close to the forming seat (214), the forming seat (214) is provided with a second accommodating hole (2141) in communication with the accommodating hole, the first accommodating hole (2131) and the second accommodating hole (2141) jointly form the forming hole (211), the accommodating groove (212) is arranged on the forming seat (214), and the other end of the elastic member (24) is connected with the forming seat (214).

6. The multi-angle rotary bending forming apparatus for a sheet material according to claim 5, wherein The forming seat (214) comprises two seat bodies (2142), the two seat bodies (2142) are axisymmetric with the defined axis (L) as the axis of symmetry, the gap between the two seat bodies (2142) forms the second containing hole (2141), two accommodating grooves (212) are correspondingly arranged on the two seat bodies (2142), and the other end of the elastic member (24) is connected to the seat body (2142).

7. The multi-angle rotary bending forming apparatus for sheet materials according to claim 6, wherein The support table (21) comprises at least two pairs of limiting blocks (215), the two pairs of limiting blocks (215) are correspondingly arranged on the two seat bodies (2142), one end of the limiting block (215) is connected to the seat body (2142), and one pair of limiting blocks (215) is arranged at the two ends of the forming curved roller (23) correspondingly.

8. The multi-angle rotary bending forming apparatus for sheet materials according to claim 7, wherein The support table (21) comprises two clamping plates (216), and the two clamping plates (216) are correspondingly arranged on the sides of the two forming seats (214) facing the pressing table (11).

9. The multi-angle rotary bending forming apparatus for sheet materials according to claim 8, wherein The length of the clamping plate (216) in the second direction is smaller than the length of the forming seat (214) in the second direction, so that the area of the forming seat (214) not covered by the clamping plate (216) forms a step, and the second direction is perpendicular to the first direction.

10. The multi-angle rotary bending forming apparatus for sheet materials according to claim 7, wherein The support table (21) comprises two side stop blocks (217), and the two side stop blocks (217) are correspondingly arranged on the sides of the two forming seats (214) away from the forming hole (211).

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