CN116586487A - S-shaped pipe bending equipment - Google Patents

Abstract

The invention provides S-shaped pipe bending equipment, which comprises: the material conveying mechanism is connected with the first pipe bending mechanism and the second pipe bending mechanism; the material conveying mechanism is used for performing feeding, moving to a station of the first pipe bending mechanism, moving to a station of the second pipe bending mechanism and blanking actions on the workpiece; the first pipe bending mechanism is used for executing a first bending action on the workpiece; the second pipe bending mechanism is used for executing a second bending action on the workpiece. The workpiece is bent twice automatically through the cooperation of the first pipe bending mechanism and the second pipe bending mechanism and the transmission mechanism. The fluted disc is adopted to conduct arc directional guiding on the bending stroke of the bent pipe arm, the bent pipe arm keeps constant driving force in the executing process of the bent pipe action, redundant impulsive force cannot be generated after the bending action is finished, the surface integrity of a workpiece can be kept, the workpiece can be precisely bent to a set angle, excessive bending conditions cannot be generated, and the processed product quality is better and more stable.

Description

S-shaped pipe bending equipment

Technical Field

The invention relates to the technical field of pipe bending equipment, in particular to S-shaped pipe bending equipment.

Background

In an automatic production line, a tubular part of a workpiece needs to be bent at different angles for a plurality of times in certain process links, and the conventional equipment generally adopts a cylinder to drive a bent pipe fitting and combines an auxiliary piece to directionally bend the tubular part to a set angle. The existing pipe bending equipment is suitable for machining workpieces with high strength of the tubular part and no strict requirement on the appearance, and when the workpieces with low strength of the tubular part and strict requirement on the appearance are machined, the tubular part is easy to be excessively bent and deformed or the appearance of the tubular part is easily damaged, so that the product quality is influenced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides S-shaped pipe bending equipment, so as to solve the technical problem that the existing pipe bending equipment with different angles is easy to cause excessive deformation or surface flaws of a pipe-shaped part.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the embodiment of the invention provides S-shaped pipe bending equipment, which comprises the following components: a material conveying mechanism, a first pipe bending mechanism and a second pipe bending mechanism which are connected to the material conveying mechanism;

the material conveying mechanism is used for performing feeding, moving to a station of the first pipe bending mechanism, moving to a station of the second pipe bending mechanism and blanking actions on a workpiece;

the first pipe bending mechanism is used for executing a first bending action on the workpiece;

the second pipe bending mechanism is used for executing a second bending action on the workpiece;

wherein, first return bend mechanism includes: the device comprises an intermediate bracket, a positioning stripping assembly, a fluted disc assembly and a bent pipe assembly; the positioning and stripping assembly is connected to the middle bracket and is used for positioning and fixing the bent pipe workpiece and withdrawing the bent pipe workpiece from the station after the bending process is completed; the fluted disc component is connected with the middle bracket; and the bent pipe assembly synchronously executes bending action on the tubular part of the workpiece according to the rotation guide of the fluted disc assembly.

The fluted disc assembly comprises a fluted disc and an arc-shaped guide rail connected to the fluted disc; the bent pipe assembly comprises a bent pipe arm, a guide wheel set and a driving device, wherein the guide wheel set is connected to the bent pipe arm in a sliding mode, the guide wheel set is connected to the arc-shaped guide rail, and the driving device is used for driving the bent pipe arm to rotate by taking the fluted disc as a rotating path so as to realize bending action of the bent pipe arm on a bent pipe workpiece fixed on the positioning stripping assembly.

Wherein, the fluted disc includes: the fluted disc body, the outward flange of fluted disc body is equipped with the tooth mouth, arc guide rail fixed connection in on the quotation of fluted disc body, just the arc guide rail with the outward flange parallel arrangement of fluted disc body, drive arrangement includes: a driving motor, a gear connected to an output shaft of the driving motor; the driving motor is fixedly connected to the bent pipe arm, and the gear is meshed with the tooth opening.

Wherein, the direction wheelset includes: go up roller train and lower roller train, go up roller train with lower roller train structure is the same, all includes: the connecting shaft is fixedly connected to the bent pipe arm, the bearing is connected to the connecting shaft, the grooved wheel is connected to the bearing, and the grooved wheel groove of the grooved wheel is buckled to the guiding edge of the arc-shaped guide rail.

Wherein, return bend arm's back still is equipped with lifting unit, lifting unit includes: the support seat is connected to the lifting power device on the support seat, the sliding block is connected to the moving end of the lifting power device, the guide rail is fixedly connected to the back of the bent pipe arm, and the sliding block is connected to the guide rail in a sliding manner.

Wherein, location takes off material subassembly includes: the material removing device comprises a material removing cylinder fixedly connected to the middle support, a positioning disc connected to the middle support, a connecting rod connected to the driving end of the material removing cylinder and a material removing disc connected to the end part of the connecting rod, wherein the connecting rod penetrates through the positioning disc; when the pipe bending action is executed, the pipe bending workpiece is positioned on the positioning disc; after the pipe bending action is finished, the stripping cylinder drives the stripping disc to push the pipe bending workpiece away from the positioning disc.

Wherein, second return bend mechanism includes: the device comprises a support frame, an elbow fixing assembly, an elbow executing assembly and a material returning assembly which are connected to the support frame, and a lifting assembly which is positioned below the elbow fixing assembly and the elbow executing assembly; the lifting assembly is used for taking out the workpiece from the conveying mechanism and lifting the workpiece to the position of the second elbow station, the elbow fixing assembly is used for clamping and fixing the tubular part of the workpiece, and the elbow executing assembly is used for driving the tubular part clamped and fixed on the elbow fixing assembly to complete bending action.

Wherein, return bend fixed subassembly includes: the pipe bending support arm is connected with the first cylinder on the pipe bending support arm, the fixing clamp is connected with the telescopic end of the first cylinder, the guide piece is connected with the pipe bending support arm, and the fixing clamp is connected with the guide piece in a sliding manner; the lower end part of the fixing clamp is also provided with a clamping opening for clamping and fixing the tubular part of the workpiece.

Wherein the guide comprises: the connecting block is fixedly connected to the bent pipe supporting arm, the guide block is adjustably connected to the connecting block, and guide grooves for guiding the fixing clamp in a sliding manner are formed in the guide block and the connecting block; the guide block is connected with the connecting block through a screw, a strip-shaped hole is formed in the connecting block, and the screw passes through the strip-shaped hole and is in threaded connection with the guide block; the guide block is also provided with an axle center indication line, and the connecting block is provided with scale marks corresponding to the indication line.

Wherein, return bend execution assembly includes: the connecting piece is connected to the support frame, the second air cylinder is connected to the connecting piece, the swing arm is hinged to the telescopic end of the second air cylinder, the swing arm is connected to the hinge seat on the support frame, the middle part of the swing arm is rotatably connected to the hinge seat, the top end of the swing arm is hinged to the telescopic end of the second air cylinder, and the bottom end of the swing arm is also hinged with a grooved wheel; when the second cylinder is started, the swing arm is driven to swing towards one side close to the fixing clamp by taking the hinge seat as a pivot, so that the tubular part of the workpiece is propped against to realize a second bending action.

The S-shaped pipe bending equipment realizes the two bending actions of the workpiece through the cooperation of the first pipe bending mechanism and the second pipe bending mechanism and the transmission mechanism, and has the advantages of full automation and high efficiency. The bending stroke of the bent pipe arm is guided in an arc-shaped orientation mode by the fluted disc, the bent pipe arm keeps constant driving force in the executing process of the bent pipe action, redundant impulsive force cannot be generated after the bending action is finished, the surface integrity of a workpiece can be kept, the workpiece can be accurately bent to a set angle, excessive bending conditions cannot be generated, and the processed product quality is better and more stable.

The foregoing description is only an overview of the present invention, and is intended to be more clearly understood as being carried out in accordance with the following description of the preferred embodiments, as well as other objects, features and advantages of the present invention.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an S-shaped pipe bending apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a conveying mechanism and a second pipe bending mechanism of an S-shaped pipe bending apparatus according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second pipe bending mechanism of the S-shaped pipe bending apparatus according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a part of an assembly structure of a pipe bending fixing assembly and a pipe bending executing assembly of the S-shaped pipe bending device according to the embodiment of the invention.

Fig. 5 is a schematic view of a part of a perspective structure of a pipe bending fixing assembly and a pipe bending executing assembly of the S-shaped pipe bending device according to the embodiment of the invention.

Fig. 6 is a schematic diagram of a front structure of a portion of a pipe bending fixing assembly and a pipe bending executing assembly of the S-shaped pipe bending apparatus according to the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an elbow fixing assembly and an elbow executing assembly of an S-shaped elbow device and a workpiece alignment state according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a lifting assembly of an S-shaped pipe bending apparatus according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of a workpiece structure processed by the S-shaped pipe bending apparatus according to the embodiment of the invention.

FIG. 10 is a schematic diagram showing the overall structure of the front side of an S-shaped pipe bending apparatus according to an embodiment of the present invention

Fig. 11 is a schematic diagram of the overall structure of the rear side of the S-bend apparatus according to the embodiment of the present invention.

Fig. 12 is a schematic view of a part of the structure of the S-bend apparatus according to the embodiment of the present invention with the conveying mechanism removed.

Fig. 13 is a schematic view showing a bending operation of the workpiece in the portion shown in fig. 12.

Fig. 14 is a schematic view of the intermediate bracket portion of fig. 12 with the intermediate bracket portion removed.

Fig. 15 is an enlarged schematic view of a fluted disc portion of an S-bend apparatus according to an embodiment of the present invention.

Fig. 16 is a schematic view of another angle structure of the portion shown in fig. 14.

FIG. 17 is a schematic view of a portion of the structure of a fluted disc, a bending arm, and an auxiliary assembly of an S-shaped pipe bending apparatus according to an embodiment of the present invention.

Fig. 18 is a schematic structural diagram of a jacking component of an S-shaped pipe bending apparatus according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent.

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships as described based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be attached, detached, or integrated, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 18, the embodiment provides an S-shaped pipe bending apparatus 100 for bending a tubular portion 201 of a pipe bending workpiece (hereinafter referred to as workpiece) 200 shown in fig. 9 by the S-shaped pipe bending apparatus 100. The pipe bending work 200 has a body with an open spherical shell to which a tubular portion 201 is welded and fixed, and the S-shaped pipe bending apparatus 100 is used to bend the tubular portion 201 by a certain angle in a set direction.

The S-shaped pipe bending apparatus 100 includes: a material transfer mechanism 10, a first pipe bending mechanism 101 and a second pipe bending mechanism 102 connected to the material transfer mechanism 10;

the material conveying mechanism 10 is used for performing feeding, moving to a station of the first pipe bending mechanism 101, moving to a station of the second pipe bending mechanism 102 and discharging actions of the workpiece 200;

the first pipe bending mechanism 101 is configured to perform a first bending action on the workpiece 200;

the second bending mechanism 102 is configured to perform a second bending operation on the workpiece 200.

Referring again to fig. 9 to 18, the first pipe bending mechanism 101 includes: the middle bracket 30, the positioning stripping component 40, the fluted disc component and the elbow component;

the positioning and stripping assembly 40 is connected to the middle support 30 and is used for positioning and fixing the bent pipe workpiece 200 and withdrawing the bent pipe workpiece from the station after the bending process is completed;

the fluted disc assembly is connected to the middle bracket 30, and the fluted disc assembly comprises a fluted disc 51 and an arc-shaped guide rail 513 connected to the fluted disc 51;

the pipe bending assembly comprises a pipe bending arm 52, a guide wheel set 522 and a driving device 53, wherein the guide wheel set 522 is connected to the pipe bending arm 52, the guide wheel set 522 is slidably connected to the arc-shaped guide rail 513, and the driving device 53 is used for driving the pipe bending arm 52 to rotate by taking the fluted disc 51 as a rotation path, so as to realize bending action of the pipe bending arm 52 on the pipe bending workpiece 200 fixed on the positioning and stripping assembly 40.

As shown in fig. 7, the toothed disc 51 includes: the fluted disc body 511, the outward flange of fluted disc body 511 is equipped with tooth mouth 512, arc guide rail 513 fixed connection in on the quotation of fluted disc body 511, just arc guide rail 513 with the outward flange parallel arrangement of fluted disc body 511. It should be understood that the toothed disc body 511 in this embodiment is a sector toothed disc, and in other embodiments, the toothed disc body 511 may be a circular toothed disc, an arc toothed disc, etc. according to the bending angle. The arc-shaped track 513 is approximately parallel to the plurality of tooth openings 512 formed at the edge of the fluted disc body 511, the arc-shaped track 513 is mainly used for connecting and rotationally guiding the bent pipe arm 52, and the uniform tooth opening 512 formed at the edge is used for meshing transmission with the driving device 53. When the driving device 53 drives the bent arm 52 to rotate, the bent arm 52 rotates about the center of the toothed disc 51. A shield 56 is further provided on the outer side of the toothed disc 51 to prevent foreign matters from entering into the engagement state of the gear 54 and the tooth opening 512.

Wherein the driving device 53 includes: a drive motor, a gear 54 connected to an output shaft of the drive motor; the driving motor is fixedly connected to the bent pipe arm 52, and the gear 54 is meshed with the tooth opening 512. The driving motor is further provided with a driver or an encoder for controlling and detecting the rotation angle travel of the driving motor so as to accurately control the bending angle of the tubular portion 201 of the workpiece, and it can be understood that the larger the rotation travel of the bent pipe arm 52 on the fluted disc 51 is, the larger the bending angle of the tubular portion 201 is.

Referring again to fig. 15 and 16, the guiding wheel set 522 includes: go up roller train and lower roller train, go up roller train with lower roller train structure is the same, all includes: the connecting shaft 5222 fixedly connected to the bent pipe arm 52, a bearing (not shown) connected to the connecting shaft 5222, and a sheave 5221 connected to the bearing, wherein a groove of the sheave 5221 is fastened to a guiding edge of the arc-shaped guide rail 513. In this embodiment, in order to improve the rotation stability of the bent arm 52, the guide wheel sets 522 are at least provided with two sets, the upper roller set and the lower roller set of each guide wheel set 522 are respectively fastened to the inner and outer edges of the arc-shaped guide rail 513, the sections of the inner and outer edges of the arc-shaped guide rail 513 are all V-shaped, the wheel grooves of the grooved wheel 5221 are fastened to the inner and outer guide edges of the arc-shaped guide rail 513, on one hand, the arc-shaped guide rail guides the rolling of the grooved wheel 5221, and on the other hand, the bent arm 52 can be connected to the fluted disc 51 through the grooved wheel 5221.

In this embodiment, the toothed disc 51 is a sector toothed disc, so limiting blocks 514 are disposed at two ends of the sector toothed disc to prevent the guide wheel set 522 from being separated from the arc guide rail 513.

Referring again to fig. 12 and 14, the back of the elbow arm 52 is further provided with a lifting assembly 60, and the lifting assembly 60 includes: the pipe bending device comprises a supporting seat 61, a lifting power device 62 connected to the supporting seat 61, a sliding block 64 connected to the moving end of the lifting power device 62 and a guide rail 65 fixedly connected to the back of the pipe bending arm 52, wherein the sliding block 64 is slidably connected to the guide rail 65. The supporting seat 61 is provided with a through hole, the lifting power device 62 is fixedly connected to the front side surface of the supporting seat 61, the lifting driving device 62 is an air cylinder, the moving end of the air cylinder is connected to a connecting plate 63 through a coupling, the connecting plate is arranged on the supporting seat in a penetrating manner and then is fixedly connected to the sliding block 64, namely, the sliding block 64 and the guide rail 65 are positioned between the fluted disc 51 and the supporting seat 61.

Wherein, the positioning and stripping assembly 40 comprises: the device comprises a stripping cylinder 41 fixedly connected to the middle bracket 30, a positioning disk 43 connected to the middle bracket 30, a connecting rod 42 connected to the driving end of the stripping cylinder 41 and a stripping disk 44 connected to the end part of the connecting rod 42, wherein the connecting rod 42 penetrates through the positioning disk 43. Specifically, the intermediate bracket 30 includes a support plate 31, the stripping cylinder 41 is fixedly connected to the top surface of the support plate 31, the positioning plate 43 is fixedly connected to the bottom surface of the support plate 31, the edge shape of the positioning plate 43 is approximately the same as the opening of the elbow workpiece 200, and when the elbow is performed, the opening of the elbow workpiece 200 is clamped to the edge of the positioning plate 43, and meanwhile, the stripping plate 44 abuts against the spherical shell inner wall of the elbow workpiece 200. When the pipe bending action is performed, the pipe bending workpiece 200 is positioned on the positioning disc 43; after the pipe bending operation is completed, the stripping cylinder 41 drives the stripping disc 44 to push the pipe bending workpiece 200 away from the positioning disc 43.

Further, the S-shaped pipe bending apparatus 100 further includes a conveying mechanism 10 and a jacking assembly 20 connected to the conveying mechanism 10, where the jacking assembly 20 is configured to jack up the pipe bending workpiece 200 moved on the conveying mechanism 10 to be separated from the conveying assembly 10 and to be lifted up to the positioning and stripping assembly 40. The transfer mechanism 10 includes: the conveying chain 11, the driving motor 13 for driving the conveying chain 11 to rotate and the rack 12 for fixedly supporting the conveying chain 11 are arranged in parallel, at least two conveying chains 11 are arranged, and the jacking assembly 20 is arranged between the two conveying chains.

Referring again to fig. 18, the jacking assembly 20 includes: the lifting device comprises a lifting cylinder 21, a connecting piece 22 connected to the moving end of the lifting cylinder 21, two opposite opening and closing cylinders 23 (25) fixedly connected to the connecting piece 22, and clamping jaws 24 (26) respectively connected to the moving ends of the opening and closing cylinders 23 (25). When the bent pipe workpiece 200 is transferred to the upper part of the jacking assembly 20, the jacking cylinder 21 is firstly opened to jack up the bent pipe workpiece 200 to be separated from the conveying mechanism 10, then the opening and closing cylinder 23 (25) is controlled to act, so that the bent pipe workpiece 200 is clamped and fixed, and the jacking is continued until the bent pipe workpiece 200 is fixed on the positioning and stripping assembly 40.

Referring again to fig. 17, to ensure the quality of the bent pipe, the S-shaped pipe bending apparatus 100 further includes a pipe bending auxiliary assembly 70, and the pipe bending auxiliary assembly 70 includes: the screw 72 connected to the intermediate bracket 30 is screwed to the auxiliary member 71 of the screw 72, and the auxiliary member 71 is provided with a fixing clamp 711, and the fixing clamp 711 is used for fixing the tubular portion 201 of the elbow workpiece. The adjusting screw 72 and the auxiliary member 71 can adjust the extension length of the auxiliary member 71, thereby changing the bending position of the tubular portion 201.

Wherein, the end of the elbow arm 52 is further provided with a connecting hole and a bar-shaped hole 521 which extends vertically to the connecting hole and is communicated with the connecting hole, a elbow piece 55 is inserted into the connecting hole 521, an adjusting screw 57 is inserted into the bar-shaped hole 521, and the adjusting screw 57 is screwed to the elbow piece 55; the pipe bending member 55 is further provided with a pipe bending groove 551, and the pipe bending groove 551 is used for holding the tubular portion 201 of the pipe bending workpiece tightly. It will be appreciated that the auxiliary member 71 is disposed adjacent to the bent member 55, and the tubular portion 201 extends into the bending groove 551, and is bent into the fixing nip 711 by the rotation of the bending arm 52, so as to finally achieve the first bending operation.

Referring again to fig. 1-8, the first pipe bending mechanism 101 and the second pipe bending mechanism 102 are disposed in a material conveying direction of the conveying mechanism 10. The second pipe bending mechanism 102 includes: the pipe bending device comprises a support frame 01, a pipe bending fixing assembly 02, a pipe bending executing assembly 03, a material returning assembly 04 and a lifting assembly 05, wherein the pipe bending fixing assembly 02, the pipe bending executing assembly 03 and the material returning assembly 04 are connected to the support frame 01; the lifting assembly 05 is used for taking out the workpiece from the conveying mechanism 10 and lifting the workpiece to the position of the second pipe bending station, the pipe bending fixing assembly 02 is used for clamping and fixing the tubular part 201 of the workpiece 200, and the pipe bending executing assembly 03 is used for driving the tubular part 201 clamped and fixed on the pipe bending fixing assembly 02 to complete bending action.

As shown in fig. 4, the supporting frame 01 includes: a supporting plate 012, and supporting legs 011 respectively connected to the vicinity of the four corners of the bottom surface of the supporting plate 012, and the elbow fixing assembly 02 and the elbow performing assembly 03 are connected to the supporting plate 012.

As shown in fig. 5 and 6, the elbow fixing assembly 02 includes: a bent pipe support arm 021, a first cylinder 022 connected to the bent pipe support arm 021, a fixing clip 024 connected to a telescopic end of the first cylinder 022, a guide 023 connected to the bent pipe support arm 021, and the fixing clip 024 being slidably connected to the guide 023; the lower end portion of the fixing clip 024 is further provided with a clip port 0241 for clipping and fixing the tubular portion 201 of the workpiece 200. Before the workpiece 200 enters the bending station of the second pipe bending mechanism 102, the first air cylinder 022 is in a contracted state, and the fixing clamp 024 is also in a contracted state, so that the workpiece 200 enters the pipe bending station first. Since the bending process has a large bending force, the fixing clip 024 is guided by the guide 023 to expand and contract in order to improve stability, thereby preventing damage to the first cylinder 022.

Wherein the guide 023 includes: a connecting block 0232 fixedly connected to the bent pipe supporting arm 021, and a guiding block 0231 adjustably connected to the connecting block 0232, wherein guiding grooves (not shown in the figure) for guiding the fixing clip 024 in a sliding manner are arranged on the guiding block 0231 and the connecting block 0232; the guide block 0231 is connected with the connecting 0232 block through a screw, a strip-shaped hole is formed in the connecting block 0232, and the screw passes through the strip-shaped hole and is in threaded connection with the guide block 0231; the guide block 0231 is further provided with an axle center indication line 0231, the connecting block 0232 is provided with scale marks 02321 corresponding to the indication line 0231, and the position of the tubular part 201 on the workpiece 200 can be clamped and fixed by the fixing clamp 024 by adjusting the relative position relationship between the connecting block 0232 and the guide block 0231, so that the on-site debugging of equipment is facilitated, and the compatibility of products of different types can be improved.

Wherein, return bend execution subassembly 03 includes: the device comprises a connecting piece 032 connected to a supporting frame 01, a second cylinder 031 connected to the connecting piece 032, a swing arm 033 hinged to the telescopic end of the second cylinder 031, a hinging seat 034 connected to the supporting frame 01, wherein the middle part of the swing arm 033 is rotatably connected to the hinging seat 034, the top end of the swing arm 033 is hinged to the telescopic end of the second cylinder 031, and a grooved wheel 035 is hinged to the bottom end of the swing arm 033; when the second cylinder 031 is started, the swing arm 033 is driven to swing towards the side close to the fixed clamp 024 with the hinge seat 034 as a pivot, so that the grooved wheel 035 abuts against the tubular part 201 of the workpiece 200 to realize a second bending action, and the grooved wheel 035 can reduce rolling friction with the tubular part 201.

Referring again to fig. 7, the material returning assembly 04 includes: the material returning cylinder 041 and the material returning plate 042 connected to the telescopic end of the material returning cylinder 041, the material pushing plate 042 is in an L shape, the material returning cylinder 041 is fixedly connected to the supporting plate 012, the L-shaped material pushing plate 042 is hung on the upper end face of the workpiece 200, and after the workpiece completes the second bending action, the material returning cylinder 041 drives the material pushing plate 042 to loosen from the bent pipe fixing assembly 02.

Referring again to fig. 8, the lifting assembly 05 includes: the lifting cylinder 051, a connecting piece 052 connected to the moving end of the lifting cylinder 051, two opposite opening and closing cylinders 053 (055) fixedly connected to the connecting piece 052, and clamping jaws 054 (056) respectively connected to the moving ends of the opening and closing cylinders 053 (055). When the bent pipe workpiece 200 is transferred to the upper part of the lifting assembly 05, the lifting cylinder 051 is firstly opened to lift the bent pipe workpiece 200 off the conveying mechanism 10, then the opening and closing cylinder 053 (055) is controlled to act, the bent pipe workpiece 200 is clamped and fixed, and the lifting assembly continues to lift until the bent pipe workpiece 200 is fixed at the second bent pipe station.

The S-shaped pipe bending equipment 100 realizes the two bending actions of the workpiece through the cooperation of the first pipe bending mechanism and the second pipe bending mechanism and the transmission mechanism, and has the advantages of full automation and high efficiency. The bending stroke of the bent pipe arm is guided in an arc-shaped orientation mode by the fluted disc, the bent pipe arm keeps constant driving force in the executing process of the bent pipe action, redundant impulsive force cannot be generated after the bending action is finished, the surface integrity of a workpiece can be kept, the workpiece can be accurately bent to a set angle, excessive bending conditions cannot be generated, and the processed product quality is better and more stable.

Referring again to fig. 9 to 18, the following is a brief description of the first bending operation of the S-bend apparatus 100 according to the present embodiment:

first, the bent pipe work 200 is sequentially arranged on the conveyor chain 11 of the conveyor mechanism 10, and is sequentially advanced by the conveyor mechanism 10;

when the bent pipe workpiece 200 positioned in front moves to the jacking component 20, the jacking cylinder 21 acts to lift the clamping jaw, jack the bent pipe workpiece 200 away from the conveying chain 11, and simultaneously stop the follow-up bent pipe workpiece 200 from moving forwards;

then, the lifting assembly 60 drives the elbow assembly and the fluted disc assembly to synchronously descend (including vertically descending and obliquely descending) until the elbow groove 551 hugs the tubular portion 201;

finally, the driving device 53 is started to drive the bent pipe arm 52 to rotate with the fluted disc 51 as a guide until the tubular portion 201 is bent to the fixing clamp 711 of the auxiliary assembly 70, namely, one bending operation of the tubular portion 201 is completed.

Referring again to fig. 1 to 8, the following is a brief description of the second bending operation of the S-bend apparatus:

firstly, the conveying mechanism 10 transfers the workpiece after the first bending to the lower part of the second bending mechanism 102, at this time, the lifting assembly 05 acts to lift and fix the workpiece 200 until the workpiece rises to the bending station;

then, the bent pipe fixing assembly 02 acts to drive the fixing clamp 024 to descend until the fixing clamp is fixedly clamped at the tubular part 201 on the workpiece 200;

then, the bending pipe executing assembly 03 acts to drive the swing arm 033 to rotate so as to stretch-bend the tubular part 201 towards a set angle direction;

finally, the workpiece 200 is released from the elbow fixing assembly 02 by the action of the material returning assembly 04, the workpiece after the second bending is transferred to the conveying mechanism 10 by the lifting assembly 05, and the workpiece is output and discharged by the conveying mechanism 10.

The S-shaped pipe bending equipment of the embodiment adopts the fluted disc to conduct arc directional guide on the bending stroke of the pipe bending arm, the pipe bending arm keeps constant driving force in the pipe bending action execution process, and after the bending action is finished, redundant impulsive force cannot be generated, compared with the existing cylinder driving bending mechanism, the S-shaped pipe bending equipment can keep the surface integrity of a workpiece, can accurately bend the workpiece to a set angle, cannot generate excessive bending conditions, and is better in processed product quality and more stable. And according to different product needs, can also carry out the nimble regulation of buckling position and angle.

The foregoing examples are provided to further illustrate the technical contents of the present invention for the convenience of the reader, but are not intended to limit the embodiments of the present invention thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.

Claims (10)

1. An S-bend apparatus, comprising: the conveying mechanism is connected with the first pipe bending mechanism and the second pipe bending mechanism;

the conveying mechanism is used for performing feeding, moving to a station of the first pipe bending mechanism, moving to a station of the second pipe bending mechanism and blanking actions on workpieces;

the first pipe bending mechanism is used for executing a first bending action on the workpiece;

the second pipe bending mechanism is used for executing a second bending action on the workpiece;

wherein, first return bend mechanism includes: the device comprises an intermediate bracket, a positioning stripping assembly, a fluted disc assembly and a bent pipe assembly; the positioning and stripping assembly is connected to the middle bracket and is used for positioning and fixing the bent pipe workpiece and withdrawing the bent pipe workpiece from the station after the bending process is completed; the fluted disc component is connected with the middle bracket; and the bent pipe assembly synchronously executes bending action on the tubular part of the workpiece according to the rotation guide of the fluted disc assembly.

2. The S-bend apparatus of claim 1, wherein the toothed plate assembly includes a toothed plate and an arcuate guide rail coupled to the toothed plate; the bent pipe assembly comprises a bent pipe arm, a guide wheel set and a driving device, wherein the guide wheel set is connected to the bent pipe arm in a sliding mode, the guide wheel set is connected to the arc-shaped guide rail, and the driving device is used for driving the bent pipe arm to rotate by taking the fluted disc as a rotating path so as to realize bending action of the bent pipe arm on a bent pipe workpiece fixed on the positioning stripping assembly.

3. The S-bend apparatus of claim 2, wherein the toothed plate comprises: the fluted disc body, the outward flange of fluted disc body is equipped with the tooth mouth, arc guide rail fixed connection in on the quotation of fluted disc body, just the arc guide rail with the outward flange parallel arrangement of fluted disc body, drive arrangement includes: a driving motor, a gear connected to an output shaft of the driving motor; the driving motor is fixedly connected to the bent pipe arm, and the gear is meshed with the tooth opening.

4. An S-bend apparatus as claimed in claim 3, wherein the set of guide wheels comprises: go up roller train and lower roller train, go up roller train with lower roller train structure is the same, all includes: the connecting shaft is fixedly connected to the bent pipe arm, the bearing is connected to the connecting shaft, the grooved wheel is connected to the bearing, and the grooved wheel groove of the grooved wheel is buckled to the guiding edge of the arc-shaped guide rail.

5. An S-bend apparatus according to claim 3, wherein the back of the bend arm is further provided with a lifting assembly comprising: the support seat is connected to the lifting power device on the support seat, the sliding block is connected to the moving end of the lifting power device, the guide rail is fixedly connected to the back of the bent pipe arm, and the sliding block is connected to the guide rail in a sliding manner.

6. An S-bend apparatus as claimed in claim 3, wherein the locating stripping assembly comprises: the material removing device comprises a material removing cylinder fixedly connected to the middle support, a positioning disc connected to the middle support, a connecting rod connected to the driving end of the material removing cylinder and a material removing disc connected to the end part of the connecting rod, wherein the connecting rod penetrates through the positioning disc; when the pipe bending action is executed, the pipe bending workpiece is positioned on the positioning disc; after the pipe bending action is finished, the stripping cylinder drives the stripping disc to push the pipe bending workpiece away from the positioning disc.

7. The S-bend apparatus of any one of claims 1-6, wherein the second bend mechanism comprises: the device comprises a support frame, an elbow fixing assembly, an elbow executing assembly and a material returning assembly which are connected to the support frame, and a lifting assembly which is positioned below the elbow fixing assembly and the elbow executing assembly; the lifting assembly is used for taking out the workpiece from the conveying mechanism and lifting the workpiece to the position of the second elbow station, the elbow fixing assembly is used for clamping and fixing the tubular part of the workpiece, and the elbow executing assembly is used for driving the tubular part clamped and fixed on the elbow fixing assembly to complete bending action.

8. The S-bend apparatus of claim 7, wherein the bend securing assembly comprises: the pipe bending support arm is connected with the first cylinder on the pipe bending support arm, the fixing clamp is connected with the telescopic end of the first cylinder, the guide piece is connected with the pipe bending support arm, and the fixing clamp is connected with the guide piece in a sliding manner; the lower end part of the fixing clamp is also provided with a clamping opening for clamping and fixing the tubular part of the workpiece.

9. The S-bend apparatus of claim 8, wherein the guide comprises: the connecting block is fixedly connected to the bent pipe supporting arm, the guide block is adjustably connected to the connecting block, and guide grooves for guiding the fixing clamp in a sliding manner are formed in the guide block and the connecting block; the guide block is connected with the connecting block through a screw, a strip-shaped hole is formed in the connecting block, and the screw passes through the strip-shaped hole and is in threaded connection with the guide block; the guide block is also provided with an axle center indication line, and the connecting block is provided with scale marks corresponding to the axle center indication line.

10. The S-bend apparatus of claim 8, wherein the bend execution assembly comprises: the connecting piece is connected to the support frame, the second air cylinder is connected to the connecting piece, the swing arm is hinged to the telescopic end of the second air cylinder, the swing arm is connected to the hinge seat on the support frame, the middle part of the swing arm is rotatably connected to the hinge seat, the top end of the swing arm is hinged to the telescopic end of the second air cylinder, and the bottom end of the swing arm is also hinged with a grooved wheel; when the second cylinder is started, the swing arm is driven to swing towards one side close to the fixing clamp by taking the hinge seat as a pivot, so that the tubular part of the workpiece is propped against to realize a second bending action.