An S-bend pipe device

Abstract

The application provides an S-shaped pipe bending device, which comprises a material conveying mechanism and a first pipe bending mechanism and a second pipe bending mechanism connected to the material conveying mechanism; the material conveying mechanism is used for performing the actions of feeding a workpiece, moving to a work station of the first pipe bending mechanism, moving to a work station of the second pipe bending mechanism and discharging; the first pipe bending mechanism is used for performing a first bending action on the workpiece; and the second pipe bending mechanism is used for performing a second bending action on the workpiece. The twice automatic bending of the workpiece is realized through the cooperation of the first pipe bending mechanism, the second pipe bending mechanism and the conveying mechanism. The bending stroke of the pipe bending arm is arc-shaped directional guided by a toothed disc, the pipe bending arm keeps constant driving force during the execution of the pipe bending action, and no excessive impact force is generated after the bending action is completed, so that the workpiece surface integrity can be maintained, the workpiece can be accurately bent to a set angle, and over-bending does not occur, and the product quality is better and more stable.

Description

Technical Field

[0001] This invention relates to the field of pipe bending equipment technology, and more particularly to an S-shaped pipe bending device. Background Technology

[0002] In automated production lines, certain processes require multiple bending operations at different angles on the tubular portion of the workpiece. Existing equipment typically uses cylinders to drive the bending components, combined with auxiliary parts, to directionally bend the tubular portion to a set angle. While existing bending equipment is suitable for workpieces with high tubular strength and no strict requirements on shape, it is prone to over-bending and deformation of the tubular portion or causing defects in its shape when processing workpieces with lower tubular strength and strict shape requirements, thus affecting product quality. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an S-shaped pipe bending device to solve the technical problem that existing pipe bending devices with multiple different angles are prone to causing excessive deformation of the tubular part or surface defects.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides an S-shaped pipe bending device, including: a conveying mechanism, and a first pipe bending mechanism and a second pipe bending mechanism connected to the conveying mechanism;

[0006] The conveying mechanism is used to perform the actions of loading the workpiece, moving it to the workstation of the first bending mechanism, moving it to the workstation of the second bending mechanism, and unloading the workpiece.

[0007] The first bending mechanism is used to perform the first bending action on the workpiece;

[0008] The second bending mechanism is used to perform a second bending action on the workpiece;

[0009] The first tube bending mechanism includes: an intermediate support, a positioning and unloading assembly, a toothed disc assembly, and a tube bending assembly; the positioning and unloading assembly is connected to the intermediate support and is used to position and fix the tube bending workpiece and remove it from the workstation after the tube bending process is completed; the toothed disc assembly is connected to the intermediate support; the tube bending assembly synchronously performs the bending action on the tubular part of the workpiece according to the rotation guide of the toothed disc assembly.

[0010] The toothed disc assembly includes a toothed disc and an arc-shaped guide rail connected to the toothed disc; the pipe bending assembly includes a pipe bending arm and a guide wheel assembly and a drive device connected to the pipe bending arm. The guide wheel assembly is slidably connected to the arc-shaped guide rail, and the drive device is used to drive the pipe bending arm to rotate around the toothed disc as the rotation path, so as to realize the bending arm to bend the pipe workpiece fixed on the positioning and unloading assembly.

[0011] The gear disc includes: a gear disc body, the outer edge of which is provided with teeth, an arc-shaped guide rail fixedly connected to the disc surface of the gear disc body, and the arc-shaped guide rail being arranged parallel to the outer edge of the gear disc body; the driving device includes: a drive motor, a gear connected to the output shaft of the drive motor; the drive motor is fixedly connected to the bent tube arm, and the gear meshes with the teeth.

[0012] The guide wheel assembly includes an upper roller assembly and a lower roller assembly. The upper roller assembly and the lower roller assembly have the same structure, each including: a connecting shaft fixedly connected to the bent pipe arm, a bearing connected to the connecting shaft, and a grooved wheel connected to the bearing. The groove of the grooved wheel is engaged with the guide edge of the arc-shaped guide rail.

[0013] The curved arm is further provided with a lifting assembly on its back. The lifting assembly includes: a support base, a lifting drive device connected to the support base, a slider connected to the moving end of the lifting drive device, and a guide rail fixedly connected to the back of the curved arm. The slider is slidably connected to the guide rail.

[0014] The positioning and unloading assembly includes: an unloading cylinder fixedly connected to the intermediate support, a positioning plate connected to the intermediate support, a connecting rod connected to the drive end of the unloading cylinder, and an unloading plate connected to the end of the connecting rod, wherein the connecting rod passes through the positioning plate; when performing the bending action, the bent workpiece is positioned on the positioning plate; after the bending action is completed, the unloading cylinder drives the unloading plate to push the bent workpiece away from the positioning plate.

[0015] The second tube bending mechanism includes: a support frame, a tube bending fixing component, a tube bending execution component, and a material unloading component connected to the support frame, and a lifting component located below the tube bending fixing component and the tube bending execution component; the lifting component is used to take the workpiece off the conveying mechanism and lift it to the second tube bending station, the tube bending fixing component is used to clamp and fix the tubular part of the workpiece, and the tube bending execution component is used to drive the tubular part clamped and fixed on the tube bending fixing component to complete the bending action.

[0016] The pipe bending fixing assembly includes: a pipe bending support arm, a first cylinder connected to the pipe bending support arm, a fixing clamp connected to the telescopic end of the first cylinder, a guide member connected to the pipe bending support arm, and the fixing clamp slidably connected to the guide member; the lower end of the fixing clamp is also provided with a clamping opening for clamping and fixing the tubular part of the workpiece.

[0017] The guide component includes: a connecting block fixedly connected to the bent pipe support arm, and a guide block adjustablely connected to the connecting block. Both the guide block and the connecting block are provided with guide grooves for sliding guidance of the fixing clamp. The guide block and the connecting block are connected by screws. The connecting block is provided with a strip hole, and the screw passes through the strip hole and is screwed to the guide block. The guide block is also provided with an axis indicator line, and the connecting block is provided with a scale line corresponding to the indicator line.

[0018] The pipe bending actuator includes: a connector connected to the support frame, a second cylinder connected to the connector, a swing arm hinged to the telescopic end of the second cylinder, and a hinge seat connected to 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 cylinder, and a grooved wheel is also hinged to the bottom end of the swing arm. When the second cylinder is activated, it drives the swing arm to swing towards the fixed clamp with the hinge seat as the fulcrum, so as to abut against the tubular part of the workpiece to achieve a second bending action.

[0019] The S-shaped pipe bending equipment of this invention achieves two bending actions on the workpiece through a first bending mechanism and a second bending mechanism working together with a conveying mechanism. The entire process is automated and highly efficient. Specifically, a gear disc provides arc-shaped directional guidance for the bending arm's bending stroke. The bending arm maintains a constant driving force during the bending action, and no excess impact is generated after the bending action. This not only maintains the integrity of the workpiece surface but also accurately bends the workpiece to the set angle, preventing over-bending. The resulting products have better and more stable quality.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are described in detail below. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the S-shaped pipe bending device according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the conveying mechanism and the second bending mechanism of the S-shaped pipe bending device according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the second bending mechanism of the S-shaped pipe bending device according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the assembly structure of the pipe bending fixing component and the pipe bending execution component of the S-shaped pipe bending device according to an embodiment of the present invention.

[0025] Figure 5 This is a three-dimensional structural diagram of the pipe bending fixing component and the pipe bending execution component of the S-shaped pipe bending device according to an embodiment of the present invention.

[0026] Figure 6 This is a front structural diagram of the pipe bending fixing component and the pipe bending execution component of the S-shaped pipe bending device according to an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the alignment state between the bending fixing component and the bending execution component of the S-shaped bending device according to an embodiment of the present invention and the workpiece.

[0028] Figure 8 This is a schematic diagram of the lifting assembly of the S-shaped pipe bending device according to an embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the workpiece structure processed by the S-shaped pipe bending equipment according to an embodiment of the present invention.

[0030] Figure 10 This is a schematic diagram of the overall front structure of the S-shaped pipe bending device according to an embodiment of the present invention.

[0031] Figure 11 This is a schematic diagram of the overall rear structure of the S-shaped pipe bending device according to an embodiment of the present invention.

[0032] Figure 12 This is a schematic diagram of the S-shaped pipe bending device of the present invention without the conveying mechanism.

[0033] Figure 13 for Figure 12 The diagram shown illustrates the bending action of the workpiece.

[0034] Figure 14 for Figure 12 A schematic diagram of the structure without the middle support.

[0035] Figure 15 This is an enlarged structural diagram of the toothed disc portion of the S-shaped pipe bending device according to an embodiment of the present invention.

[0036] Figure 16 for Figure 14 A schematic diagram of the structure from another angle of the part.

[0037] Figure 17 This is a schematic diagram of the gear disc, bending arm, and auxiliary components of the S-shaped pipe bending device according to an embodiment of the present invention.

[0038] Figure 18 This is a schematic diagram of the lifting component of the S-shaped pipe bending device according to an embodiment of the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Please see Figures 1 to 18 This embodiment provides an S-shaped pipe bending device 100, which is used for bending pipes such as... Figure 9 The tubular portion 201 on the workpiece 200 shown is bent. The main body of the workpiece 200 has an open spherical shell, on which the tubular portion 201 is welded and fixed. The S-shaped tube bending device 100 is used to bend the tubular portion 201 at a certain angle in a set direction.

[0047] The S-shaped pipe bending device 100 includes: a conveying mechanism 10, and a first pipe bending mechanism 101 and a second pipe bending mechanism 102 connected to the conveying mechanism 10;

[0048] The conveying mechanism 10 is used to perform the actions of loading the workpiece 200, moving it to the station of the first bending mechanism 101, moving it to the station of the second bending mechanism 102, and unloading it.

[0049] The first bending mechanism 101 is used to perform the first bending action on the workpiece 200;

[0050] The second bending mechanism 102 is used to perform a second bending action on the workpiece 200.

[0051] Please refer to it again. Figures 9 to 18 The first pipe bending mechanism 101 includes: an intermediate support 30, a positioning and unloading assembly 40, a toothed disc assembly, and a pipe bending assembly;

[0052] The positioning and unloading assembly 40 is connected to the intermediate support 30 and is used to position and fix the workpiece 200 and remove it from the workstation after the bending process is completed.

[0053] The gear disk assembly is connected to the intermediate support 30. The gear disk assembly includes a gear disk 51 and an arc-shaped guide rail 513 connected to the gear disk 51.

[0054] The pipe bending assembly includes a pipe bending arm 52, a guide wheel assembly 522 and a drive device 53 connected to the pipe bending arm 52. The guide wheel assembly 522 is slidably connected to the arc-shaped guide rail 513. The drive device 53 is used to drive the pipe bending arm 52 to rotate around the gear plate 51 as the rotation path, so as to realize the bending arm 52 to bend the workpiece 200 fixed on the positioning and unloading assembly 40.

[0055] like Figure 15 As shown, the gear disk 51 includes: a gear disk body 511, with teeth 512 on the outer edge of the gear disk body 511, and an arc-shaped guide rail 513 fixedly connected to the disk surface of the gear disk body 511, with the arc-shaped guide rail 513 arranged parallel to the outer edge of the gear disk body 511. It is understood that the gear disk body 511 in this embodiment is a fan-shaped gear disk; in other embodiments, depending on the bending angle, the gear disk body 511 can also be a circular gear disk, an arc-shaped gear disk, etc. The arc-shaped guide rail 513 has an arc-shaped trajectory that is approximately parallel to the teeth 512 on the edge of the gear disk body 511. The arc-shaped guide rail 513 is mainly used for connecting and rotating the bent pipe arm 52, while the uniformly spaced teeth 512 on the edge are used for meshing and transmission with the drive device 53. When the drive device 53 drives the bent pipe arm 52 to rotate, the bent pipe arm 52 rotates approximately around the center of the gear disk 51. The outer side of the gear disc 51 is also provided with a protective cover 56 to prevent foreign objects from entering and affecting the meshing state of the gear 54 and the tooth 512.

[0056] The driving device 53 includes a drive motor and a gear 54 connected to the output shaft of the drive motor. The drive motor is fixedly connected to the bending arm 52, and the gear 54 meshes with the toothed jaw 512. The drive motor is also equipped with a driver or encoder for controlling and detecting the rotational angle stroke of the drive motor, so as to accurately control the bending angle of the tubular part 201 of the workpiece. It can be understood that the greater the rotational stroke of the bending arm 52 on the toothed disc 51, the greater the bending angle of the tubular part 201.

[0057] Please refer to it again. Figure 15 and Figure 16The guide wheel assembly 522 includes an upper roller assembly and a lower roller assembly. The upper roller assembly and the lower roller assembly have the same structure, each including: a connecting shaft 5222 fixedly connected to the bent tube arm 52, a bearing (not shown in the figure) connected to the connecting shaft 5222, and a grooved wheel 5221 connected to the bearing. The groove of the grooved wheel 5221 is engaged with the guide edge of the arc-shaped guide rail 513. In this embodiment, in order to improve the rotational stability of the bending arm 52, the guide wheel set 522 is provided with at least 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 inner and outer edges of the arc-shaped guide rail 513 are V-shaped. The groove of the grooved wheel 5221 is engaged with the inner and outer guide edges of the arc-shaped guide rail 513. On the one hand, the arc-shaped guide rail guides the rolling of the grooved wheel 5221. On the other hand, the bending arm 52 can be connected to the gear plate 51 through the grooved wheel 5221.

[0058] In this embodiment, the toothed disc 51 is a fan-shaped toothed disc. Therefore, limit blocks 514 are provided at both ends of the fan-shaped toothed disc to prevent the guide wheel assembly 522 from dislodging from the arc-shaped guide rail 513.

[0059] Please refer to it again. Figure 12 and Figure 14 The curved arm 52 is further provided with a lifting assembly 60 on its back. The lifting assembly 60 includes: a support base 61, a lifting drive device 62 connected to the support base 61, a slider 64 connected to the moving end of the lifting drive device 62, and a guide rail 65 fixedly connected to the back of the curved arm 52. The slider 64 is slidably connected to the guide rail 65. The support base 61 has a through hole. The lifting drive device 62 is fixedly connected to the front side of the support base 61. The lifting drive device 62 is a cylinder, and the moving end of the cylinder is connected to a connecting plate 63 via a coupling. The connecting plate passes through the support base and is fixedly connected to the slider 64. That is, the slider 64 and the guide rail 65 are located between the gear plate 51 and the support base 61.

[0060] The positioning and unloading assembly 40 includes: an unloading cylinder 41 fixedly connected to the intermediate support 30, a positioning disk 43 connected to the intermediate support 30, a connecting rod 42 connected to the drive end of the unloading cylinder 41, and an unloading disk 44 connected to the end of the connecting rod 42, wherein the connecting rod 42 passes through the positioning disk 43. Specifically, the intermediate support 30 includes a support plate 31, the unloading cylinder 41 is fixedly connected to the top surface of the support plate 31, and the positioning disk 43 is fixedly connected to the bottom surface of the support plate 31. The edge shape of the positioning disk 43 is approximately the same as the opening of the workpiece 200. When performing the bending action, the opening of the workpiece 200 is engaged with the edge of the positioning disk 43, while the unloading disk 44 abuts against the inner wall of the spherical shell of the workpiece 200. When the bending action is performed, the workpiece 200 is positioned on the positioning plate 43; after the bending action is completed, the stripping cylinder 41 drives the stripping plate 44 to push the workpiece 200 away from the positioning plate 43.

[0061] Furthermore, the S-shaped pipe bending device 100 also includes a conveying mechanism 10 and a lifting assembly 20 connected to the conveying mechanism 10. The lifting assembly 20 is used to lift the workpiece 200 transferred on the conveying mechanism 10 upwards to detach it from the conveying mechanism 10 and lift it to the positioning and unloading assembly 40. The conveying mechanism 10 includes: a conveyor chain 11, a drive motor 13 for driving the conveyor chain 11 to rotate, and a frame 12 for fixing and supporting the conveyor chain 11. The conveyor chain 11 has at least two chains, which are arranged relatively parallel to each other. The lifting assembly 20 is located between the two conveyor chains.

[0062] Please refer to it again. Figure 18 The lifting assembly 20 includes: a lifting cylinder 21, a connector 22 connected to the moving end of the lifting cylinder 21, two opposing opening and closing cylinders 23 (25) fixedly connected to the connector 22, and grippers 24 (26) respectively connected to the moving ends of the opening and closing cylinders 23 (25). When the workpiece 200 is moved above it, the lifting assembly 20 first opens the lifting cylinder 21 to lift the workpiece 200 away from the conveying mechanism 10, then controls the opening and closing cylinders 23 (25) to clamp and fix the workpiece 200, and continues to lift until it is fixed on the positioning and unloading assembly 40.

[0063] Please refer to it again. Figure 17To ensure the quality of the pipe bending, the S-shaped pipe bending equipment 100 further includes a pipe bending auxiliary assembly 70. The pipe bending auxiliary assembly 70 includes: a screw 72 connected to the intermediate support 30; an auxiliary component 71 screwed to the screw 72; and a fixing clamp 711 on the auxiliary component 71 for fixing the tubular portion 201 of the pipe workpiece. Adjusting the screw 72 and the auxiliary component 71 allows for adjustment of the extension length of the auxiliary component 71, thereby changing the bending position of the tubular portion 201.

[0064] The bending arm 52 has a connecting hole at its end and a strip-shaped hole 521 extending perpendicularly to and communicating with the connecting hole. A bending component 55 is inserted into the connecting hole, and an adjusting screw 57 passes through the strip-shaped hole 521 and is screwed onto the bending component 55. The bending component 55 also has a bending groove 551, which is used to hold the tubular part 201 of the bent workpiece. It can be understood that the auxiliary component 71 is positioned close to the bending component 55. The tubular part 201 first extends into the bending groove 551, and then the bending arm 52 rotates to bend it into the fixed clamp 711, thus realizing the first bending action.

[0065] Please refer to it again. Figures 1 to 8 The first bending mechanism 101 and the second bending mechanism 102 are arranged one after the other in the material conveying direction of the conveying mechanism 10. The second bending mechanism 102 includes: a support frame 01, a bending fixing assembly 02, a bending execution assembly 03 and a material unloading assembly 04 connected to the support frame 01, and a lifting assembly 05 located below the bending fixing assembly 02 and the bending execution assembly 03; the lifting assembly 05 is used to take the workpiece off the conveying mechanism 10 and lift it to the second bending station; the bending fixing assembly 02 is used to clamp and fix the tubular part 201 of the workpiece 200; and the bending execution assembly 03 is used to drive the tubular part 201 clamped and fixed on the bending fixing assembly 02 to complete the bending action.

[0066] like Figure 4 As shown, the support frame 01 includes: a support plate 012, and support feet 011 connected to the four corners of the bottom surface of the support plate 012. The pipe bending fixing assembly 02 and the pipe bending execution assembly 03 are connected to the support plate 012.

[0067] like Figure 5 and Figure 6As shown, the pipe bending fixing assembly 02 includes: a pipe bending support arm 021, a first cylinder 022 connected to the pipe bending support arm 021, a fixing clamp 024 connected to the telescopic end of the first cylinder 022, and a guide member 023 connected to the pipe bending support arm 021. The fixing clamp 024 is slidably connected to the guide member 023. The lower end of the fixing clamp 024 is also provided with a clamping opening 0241 for clamping and fixing the tubular portion 201 of the workpiece 200. Before the workpiece 200 enters the bending position of the second pipe bending mechanism 102, the first cylinder 022 is in a retracted state, and the fixing clamp 024 is also in a retracted state at this time, so that the workpiece 200 enters the pipe bending position first. Since the pipe bending process has a large bending force, in order to improve stability, the fixing clamp 024 is guided by the telescopic movement of the guide member 023 to prevent damage to the first cylinder 022.

[0068] The guide component 023 includes: a connecting block 0232 fixedly connected to the bent pipe support arm 021, and a guide block 0231 adjustablely connected to the connecting block 0232. Both the guide block 0231 and the connecting block 0232 are provided with guide grooves (not shown in the figure) for sliding guide of the fixing clamp 024. The guide block 0231 and the connecting block 0232 are connected by screws. The connecting block 0232 is provided with a strip hole, and the screw passes through the strip hole and is screwed to the guide block 0231. The guide block 0231 is also provided with an axis indicator line 02311, and the connecting block 0232 is provided with a scale line 02321 corresponding to the indicator line 02311. By adjusting the relative positional relationship between the connecting block 0232 and the guide block 0231, the position of the fixing clamp 024 clamping and fixing the tubular part 201 of the workpiece 200 can be adjusted, which not only facilitates on-site equipment debugging, but also improves the compatibility of the equipment in processing different models of products.

[0069] The bending actuator 03 includes: a connector 032 connected to the support frame 01, a second cylinder 031 connected to the connector 032, a swing arm 033 hinged to the telescopic end of the second cylinder 031, and a hinge seat 034 connected to the support frame 01. The middle part of the swing arm 033 is rotatably connected to the hinge seat 034, the top end of the swing arm 033 is hinged to the telescopic end of the second cylinder 031, and the bottom end of the swing arm 033 is also hinged to a grooved wheel 035. When the second cylinder 031 is activated, it drives the swing arm 033 to swing towards the side closer to the fixed clamp 024 with the hinge seat 034 as the fulcrum, so that the grooved wheel 035 abuts against the tubular part 201 of the workpiece 200 to achieve a second bending action. The grooved wheel 035 can reduce the rolling friction between itself and the tubular part 201.

[0070] Please refer to it again. Figure 7The ejector assembly 04 includes an ejector cylinder 041 and an ejector plate 042 connected to the telescopic end of the ejector cylinder 041. The ejector plate 042 is L-shaped. The ejector cylinder 041 is fixedly connected to the support plate 012. The L-shaped ejector plate 042 is hung on the upper end face of the workpiece 200. After the workpiece completes the second bending action, the ejector cylinder 041 drives the ejector plate 042 to detach from the bending pipe fixing assembly 02.

[0071] Please refer to it again. Figure 8 The lifting assembly 05 includes: a lifting cylinder 051, a connector 052 connected to the moving end of the lifting cylinder 051, two opposing opening and closing cylinders 053 (055) fixedly connected to the connector 052, and grippers 054 (056) respectively connected to the moving ends of the opening and closing cylinders 053 (055). When the workpiece 200 is moved above it, the lifting assembly 05 first opens the lifting cylinder 051 to lift the workpiece 200 away from the conveying mechanism 10, then controls the opening and closing cylinders 053 (055) to clamp and fix the workpiece 200, and continues to lift until it is fixed at the second bending pipe station.

[0072] The S-shaped pipe bending machine 100 of the present invention realizes two bending actions of the workpiece through a first bending mechanism and a second bending mechanism in coordination with a conveying mechanism. The process is fully automated and highly efficient. Specifically, a gear plate is used to guide the bending arm in an arc-shaped orientation. The bending arm maintains a constant driving force during the bending action, and no excess impact force is generated after the bending action. This not only maintains the integrity of the workpiece surface but also accurately bends the workpiece to the set angle, preventing over-bending. The resulting products have better and more stable quality.

[0073] Please refer to it again. Figures 9 to 18 The following is a brief description of the first pipe bending process of the S-type pipe bending device 100 in this embodiment:

[0074] First, the workpieces 200 are arranged sequentially on the conveyor chain 11 of the conveyor mechanism 10, and are moved forward sequentially by the conveyor mechanism 10.

[0075] When the workpiece 200 in front moves to the lifting assembly 20, the lifting cylinder 21 is activated to raise the gripper and lift the workpiece 200 away from the conveyor chain 11. At the same time, it can also prevent the subsequent workpiece 200 from moving forward. During the lifting process, the opening and closing cylinder is activated to clamp and fix the bent tube workpiece until the workpiece 200 is lifted onto the positioning and unloading assembly 40.

[0076] Then, the lifting assembly 60 drives the bending assembly and the toothed disc assembly to descend synchronously (including vertical descent and inclined descent) until the bending groove 551 grips the tubular part 201.

[0077] Finally, the drive device 53 starts, driving the bending arm 52 to rotate with the gear plate 51 as the guide until the tubular part 201 is bent into the fixed clamp 711 of the bending auxiliary component 70, thus completing one bending action of the tubular part 201.

[0078] Please refer to it again. Figures 1 to 8 The following is a brief description of the second pipe bending process of this S-shaped pipe bending equipment:

[0079] First, the conveying mechanism 10 moves the workpiece that has completed the first bend to the bottom of the second bend mechanism 102. At this time, the lifting component 05 is activated to lift and fix the workpiece 200 until it rises to the bending position.

[0080] Then, the pipe bending fixing assembly 02 is activated, driving the fixing clamp 024 to descend until it is fixedly clamped at the tubular part 201 on the workpiece 200;

[0081] Then, the bending tube actuator 03 is activated to drive the swing arm 033 to rotate, so as to bend the tubular part 201 in a set angle direction;

[0082] Finally, the ejector assembly 04 releases the workpiece 200 from the bending pipe fixing assembly 02, and the lifting assembly 05 transfers the workpiece that has completed the second bend to the conveying mechanism 10, where it is output and unloaded.

[0083] The S-shaped pipe bending machine in this embodiment uses a geared disc to guide the bending arm's bending stroke in an arc shape. The bending arm maintains a constant driving force during the bending process, and no excess force is generated after the bending action is completed. Compared to existing cylinder-driven bending mechanisms, it not only maintains the integrity of the workpiece surface but also accurately bends the workpiece to the set angle without over-bending, resulting in better and more stable product quality. Furthermore, the bending position and angle can be flexibly adjusted according to different product needs.

[0084] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. An S-shaped pipe bending device, characterized in that, include: A conveying mechanism and a first bending mechanism and a second bending mechanism connected to the conveying mechanism; The conveying mechanism is used to perform the actions of loading the workpiece, moving it to the workstation of the first bending mechanism, moving it to the workstation of the second bending mechanism, and unloading the workpiece. The first bending mechanism is used to perform the first bending action on the workpiece; The second bending mechanism is used to perform a second bending action on the workpiece; The first tube bending mechanism includes: an intermediate support, a positioning and unloading assembly, a gear plate assembly, and a tube bending assembly; the positioning and unloading assembly is connected to the intermediate support and is used to position and fix the tube bending workpiece and remove it from the workstation after the tube bending process is completed; the gear plate assembly is connected to the intermediate support; the tube bending assembly synchronously performs the bending action on the tubular part of the workpiece according to the rotation guide of the gear plate assembly. The gear disk assembly includes a gear disk and an arc-shaped guide rail connected to the gear disk; the pipe bending assembly includes a pipe bending arm and a guide wheel assembly and a driving device connected to the pipe bending arm. The guide wheel assembly is slidably connected to the arc-shaped guide rail, and the driving device is used to drive the pipe bending arm to rotate around the gear disk as a rotation path, so as to realize the bending arm to bend the pipe workpiece fixed on the positioning and unloading assembly; the gear disk includes: a gear disk body, the outer edge of the gear disk body is provided with teeth, the arc-shaped guide rail is fixedly connected to the disk surface of the gear disk body, and the arc-shaped guide rail is arranged parallel to the outer edge of the gear disk body; the driving device includes: a drive motor, and a gear connected to the output shaft of the drive motor; the drive motor is fixedly connected to the pipe bending arm, and the gear meshes. The guide wheel assembly includes an upper roller assembly and a lower roller assembly. The upper roller assembly and the lower roller assembly have the same structure, each including: a connecting shaft fixedly connected to the bending arm, a bearing connected to the connecting shaft, and a grooved wheel connected to the bearing. The groove of the grooved wheel is engaged with the guide edge of the arc-shaped guide rail. The positioning and unloading assembly includes: an unloading cylinder fixedly connected to the intermediate support, a positioning plate connected to the intermediate support, a connecting rod connected to the drive end of the unloading cylinder, and an unloading plate connected to the end of the connecting rod. The connecting rod passes through the positioning plate. When performing the bending action, the bent workpiece is positioned on the positioning plate. After the bending action is completed, the unloading cylinder drives the unloading plate to push the bent workpiece away from the positioning plate. The end of the bent tube arm is also provided with a connecting hole and a strip hole extending perpendicularly to and communicating with the connecting hole. A bent tube component is inserted into the connecting hole, and an adjusting screw is passed through the strip hole. The adjusting screw is screwed to the bent tube component. The bent tube component is also provided with a bent tube groove, which is used to hold the tubular part of the bent tube workpiece.

2. The S-shaped pipe bending equipment according to claim 1, characterized in that, The back of the bending arm is also provided with a lifting assembly, which includes: a support base, a lifting drive device connected to the support base, a slider connected to the moving end of the lifting drive device, and a guide rail fixedly connected to the back of the bending arm, wherein the slider is slidably connected to the guide rail.

3. The S-shaped pipe bending equipment according to claim 1 or 2, characterized in that, The second tube bending mechanism includes: a support frame, a tube bending fixing component, a tube bending execution component, and a material unloading component connected to the support frame, and a lifting component located below the tube bending fixing component and the tube bending execution component; the lifting component is used to take the workpiece off the conveying mechanism and lift it to the second tube bending station, the tube bending fixing component is used to clamp and fix the tubular part of the workpiece, and the tube bending execution component is used to drive the tubular part clamped and fixed on the tube bending fixing component to complete the bending action.

4. The S-shaped pipe bending equipment according to claim 3, characterized in that, The pipe bending fixing assembly includes: a pipe bending support arm, a first cylinder connected to the pipe bending support arm, a fixing clamp connected to the telescopic end of the first cylinder, a guide member connected to the pipe bending support arm, and the fixing clamp being slidably connected to the guide member; the lower end of the fixing clamp is also provided with a clamping opening for clamping and fixing the tubular part of the workpiece.

5. The S-shaped pipe bending device according to claim 4, characterized in that, The guide component includes: a connecting block fixedly connected to the bent pipe support arm, and a guide block adjustablely connected to the connecting block. Both the guide block and the connecting block are provided with guide grooves for sliding guidance of the fixing clamp. The guide block and the connecting block are connected by screws. The connecting block is provided with a strip hole, and the screw passes through the strip hole and is screwed to the guide block. The guide block is also provided with an axis indicator line, and the connecting block is provided with a scale line corresponding to the axis indicator line.

6. The S-shaped pipe bending device according to claim 4, characterized in that, The pipe bending actuator includes: a connector connected to the support frame, a second cylinder connected to the connector, a swing arm hinged to the telescopic end of the second cylinder, and a hinge seat connected to 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 cylinder, and a grooved wheel is also hinged to the bottom end of the swing arm. When the second cylinder is activated, it drives the swing arm to swing towards the fixed clamp with the hinge seat as the fulcrum, so as to abut against the tubular part of the workpiece to achieve a second bending action.

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