Pre-rounding device and pre-rounding welding machine

Abstract

The utility model belongs to core processing production equipment technical field especially relates to a kind of pre-rounding device and pre-rounding welding machine, including inner circle support device and the rotating group round device for reducing the iron core gap of enclosed, the lifting end of inner circle support device extends through the rotating group round device upwards, and rotating group round device rotation axis and inner circle support device rotation axis coincide setting, rotating group round device is provided with several limit stop mechanisms of rotation symmetry around the central axis of rotating group round device, each limit stop mechanism is arranged around the lifting end of inner circle support device, realizes the automatic welding processing of pre-rounding core.

Description

Technical Field

[0001] This utility model belongs to the technical field of iron core processing and production equipment, and particularly relates to a pre-circular device and a pre-circular welding machine. Background Technology

[0002] Motors are widely used in industrial technology. During motor assembly, the iron core needs to be wound. During the winding process, the iron core needs to be placed in a jig. After the winding is completed, the iron core needs to be separated from the jig to facilitate the handling and transfer of the iron core for pre-circularization. Several iron cores are pre-assembled into a circle, and then several iron cores that are not tightly connected are welded together. The gaps between two adjacent iron cores are welded to achieve a tight connection between several iron cores. In the existing technology, multiple iron cores are combined and spliced ​​to form a circle, and then the connecting seams on the sides are welded. All connecting seams are welded by rotating multiple times. However, the existing iron core splicing and welding method has technical problems such as low efficiency, insufficient tightness, and unstable quality after welding. Utility Model Content

[0003] The purpose of this utility model is to provide a pre-forming circle device and a pre-forming circle welding machine, which aims to solve the technical problems of the existing technology of placing iron cores one by one for welding, which is inefficient and lacks compactness, resulting in unstable quality after welding. The device places multiple iron cores at once, which is efficient, compacts the iron cores, and ensures stable quality after welding.

[0004] To achieve the above objectives, this utility model provides a pre-circular device, including an inner circle support device and a rotating assembly device for reducing the gap between enclosed iron cores. The inner circle support device is installed on the rotating end of the rotating assembly device, and the lifting end of the inner circle support device extends upward through the rotating assembly device. The rotation axis of the rotating assembly device and the rotation axis of the inner circle support device are coincident. The rotating assembly device is provided with a plurality of limiting and locking mechanisms that are symmetrical about the central axis of the rotating assembly device. Each of the limiting and locking mechanisms is arranged around the lifting end of the inner circle support device.

[0005] Preferably, the rotating circle assembly device includes a rotating mechanism and a circle assembly clamping mechanism. The circle assembly clamping mechanism is installed on the rotating end of the rotating mechanism, and the inner circle support device is installed below the rotating mechanism. The lifting end of the inner circle support device extends upward and passes through the rotating mechanism and the circle assembly clamping mechanism in sequence.

[0006] Preferably, the circular clamping mechanism includes a fixing component, a guide cover, a circular assembly turntable, a circular assembly motor, and a turntable. The circular assembly motor is fixedly mounted on the rotating end of the rotating mechanism, and the turntable is rotatably mounted on the rotating end of the rotating mechanism. The output end of the circular assembly motor is meshed with the turntable. The circular assembly turntable is mounted on the turntable. The guide cover covers the circular assembly turntable, the circular assembly motor, and the turntable, and is fixedly connected to the rotating end of the rotating mechanism. The guide cover has a plurality of centrally rotationally symmetrical first guide holes spaced apart. The circular assembly turntable has a plurality of centrally rotationally symmetrical second guide holes spaced apart. Each second guide hole is inclined toward the center of the circular assembly turntable. Each first guide hole corresponds to each second guide hole. The bottom of the fixing component passes through the first guide holes and the second guide holes in sequence. When the circular assembly turntable rotates, the second guide holes push the fixing component to slide back and forth along the first guide holes.

[0007] Preferably, the fixing component includes a fixing plate, a return spring, a base, and a sliding block. The sliding block is sequentially disposed through the first guide hole and the second guide hole. The base is fixedly installed on the top of the sliding block. One end of the fixing plate is slidably disposed in the base, and the other end of the fixing plate is disposed toward the central axis of the circular turntable. The two ends of the return spring abut against the end of the fixing plate and the inner side of the base, respectively.

[0008] Preferably, a roller is rotatably provided at the bottom of the sliding block, and the roller is located in the second guide hole.

[0009] Preferably, the rotating mechanism includes an outer shell, an inner shell, and a rotating motor. The inner shell is rotatably mounted inside the outer shell, the circular clamping mechanism is mounted on the inner shell, the rotating end of the rotating motor is meshed with the outer side of the inner shell, the inner circular support device is mounted at the bottom of the inner shell, and the lifting end of the inner circular support device extends upward and passes through the inner shell and the circular clamping mechanism in sequence.

[0010] Preferably, the inner circle support device includes a lifting mechanism and a support column. The lifting mechanism is installed in the rotating circle assembly device, and the lifting end of the lifting mechanism extends upward through the rotating circle assembly device. The support column is installed on the lifting end of the lifting mechanism.

[0011] The pre-forming circular device provided in this embodiment of the utility model has at least one of the following technical effects:

[0012] The pre-forming circular device of this utility model is composed of an inner circular support device and a rotating circular assembly device for reducing the gap between the enclosed iron cores. The inner circular support device is installed on the rotating end of the rotating circular assembly device, and the rotation axis of the inner circular support device coincides with the rotation axis of the rotating circular assembly device, ensuring that the inner circular support device and the rotating circular assembly device rotate coaxially. This ensures that the iron core, which is reduced and enclosed by the rotating circular assembly device, can rotate tightly against the side wall at the top of the inner circular support device. During assembly, the inner circular support device is installed on the rotating end of the rotating circular assembly device. During use, the iron core is placed in the inner circular... On the support device, the rotating assembly device clamps the assembled iron core into a circle, making it fit tightly against the outer surface of the end of the inner circle support device. The rotating assembly device drives the inner circle support device to rotate synchronously, welding the gaps of the assembled iron core. After welding, the rotating assembly device rotates a certain angle and then welds another assembled gap. This action is repeated until all gaps are welded. The rotating assembly device releases the assembled iron core and takes out the processed assembled iron core. The above actions are repeated to complete continuous processing. Through the above structural settings, the automated pre-circular welding processing of the pre-formed iron core is achieved.

[0013] Another pre-circle welding machine provided in this embodiment of the present invention includes the pre-circle device described above, and also includes a frame, a pre-circle transfer device and several welding devices. Each of the welding devices is arranged at intervals around the rotating assembly device, and the pre-circle transfer device is arranged adjacent to the rotating assembly device.

[0014] Preferably, the pre-formed circular material transfer device includes a material transfer guide plate, a tensioning turntable, a cover plate, a mounting base, two lifting cylinders, at least one moving module, several positioning plates, and several clamping components. The mounting base is connected to the frame via a robotic arm. The two lifting cylinders are respectively fixedly installed on both sides of the mounting base, with the lifting ends of the lifting cylinders facing downwards. The cover plate is fixedly installed on the lifting ends of the two lifting cylinders. The moving module is fixedly installed on the cover plate. The material transfer guide plate is installed at the bottom of the cover plate. The tensioning turntable is rotatably installed between the material transfer guide plate and the cover plate, and the moving end of the moving module... The positioning plates are engaged with the edge of the tensioning turntable. One end of each positioning plate passes through the transfer guide plate, the tensioning turntable, and the cover plate in sequence and is connected to the bottom of the mounting base. Each positioning plate is symmetrically arranged around the central axis of the transfer guide plate. The tensioning turntable is provided with a plurality of centrally rotationally symmetrical third guide holes at intervals. Each third guide hole is inclined toward the center of the tensioning turntable. The transfer guide plate is provided with a plurality of centrally rotationally symmetrical fourth guide holes at intervals. One end of each clamping component passes through the fourth guide holes and the third guide holes in sequence, and each clamping component is respectively disposed between two positioning plates.

[0015] Preferably, the bottom of the material transfer guide plate is provided with a plurality of sliding grooves, each of the sliding grooves being arranged in a central rotational symmetry about the center of the material transfer guide plate, and each of the fourth guide holes being respectively provided in each of the sliding grooves, and each of the clamping components being slidably connected to each of the sliding grooves.

[0016] The pre-forming circular welding machine provided in this embodiment of the utility model has at least one of the following technical effects:

[0017] The pre-circular welding machine of this utility model consists of a frame and a rotating circular assembly device, a pre-circular material transfer device, and several welding devices mounted on the frame for reducing the gap between the enclosed iron cores. The rotating circular assembly device also has an inner circular support device mounted on its rotating end, with its rotation axis coinciding with that of the rotating circular assembly device. This ensures that the inner circular support device and the rotating circular assembly device rotate coaxially, allowing the iron core, which is reduced and enclosed by the rotating circular assembly device, to rotate tightly against the side wall at the top of the inner circular support device. During assembly, the inner circular support device is installed on the rotating end of the rotating circular assembly device, and then the rotating circular assembly device is fixedly mounted on the frame. The pre-circular material transfer device is connected to the rotating circular assembly device... The assembly is arranged such that welding devices are spaced around the rotating circular assembly device. In use, the pre-assembled circular material transfer device picks up the iron core that has been preliminarily assembled into a circle and transfers it to the inner circular support device. The rotating circular assembly device clamps the assembled iron core, making it fit tightly against the outer surface of the end of the inner circular support device. The rotating circular assembly device drives the inner circular support device to rotate synchronously, and the welding devices weld the joints. After welding, the rotating circular assembly device rotates a certain angle, and the welding device welds another joint. This action is repeated until all joints are welded. The rotating circular assembly device releases the assembled iron core and takes out the processed assembled iron core. The above actions are repeated to complete continuous processing. Through the above structural setup, the automated welding processing of pre-assembled circular iron cores is achieved. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 An effect diagram of the pre-circular welding machine provided in an embodiment of this utility model.

[0020] Figure 2 An exploded view of the pre-circular device provided in an embodiment of this utility model.

[0021] Figure 3 A side view of the pre-circular device provided in an embodiment of this utility model.

[0022] Figure 4 A cross-sectional view of the pre-circular device provided in an embodiment of this utility model.

[0023] Figure 5 The renderings show the rotating assembly device (without guide cover) and inner circle support device of the pre-forming circle device provided in the embodiments of this utility model.

[0024] Figure 6 for Figure 5 A magnified view of part A in the image.

[0025] Figure 7 The image shows the effect of the rotating assembly of the pre-forming circle device (single fixed component) provided in the embodiment of this utility model.

[0026] Figure 8 A rendering of the supporting column of the preformed circular device provided in this embodiment of the utility model.

[0027] Figure 9 A rendering of the pre-circle material transfer device of the pre-circle welding machine provided in this embodiment of the utility model.

[0028] Figure 10 An exploded view of the pre-circle material transfer device of the pre-circle welding machine provided in this embodiment of the utility model.

[0029] Figure 11 A plan view of the material transfer guide plate of the pre-circle transfer device of the pre-circle welding machine provided in this embodiment of the utility model.

[0030] Figure 12 The image shows a processed product of the pre-formed circle welding machine provided in this embodiment of the utility model.

[0031] The following are the labeling elements in the figure:

[0032] 10—Frame; 20—Rotating assembly device; 21—Rotating mechanism

[0033] 22—Circular clamping mechanism; 30—Inner circular support device; 31—Lifting mechanism

[0034] 32—Support column; 40—Pre-formed circular material transfer device; 41—Material transfer guide plate

[0035] 42—Tightening turntable; 43—Cover plate; 44—Mounting base

[0036] 45—Lifting cylinder; 46—Moving module; 47—Positioning plate

[0037] 48—Clamping assembly; 50—Welding device; 60—Iron core

[0038] 211—Outer shell 212—Inner shell 213—Rotary motor

[0039] 221—Fixed component; 222—Guide cover; 223—Circular turntable

[0040] 224—Circular motor; 225—Turntable; 411—Slide groove

[0041] 412—Fourth guide hole; 421—Third guide hole; 481—Clamping plate

[0042] 482—Limit plate; 2211—Fixing plate; 2212—Reset spring

[0043] 2213—Base; 2214—Sliding block; 2221—First guide hole

[0044] 2231—Second guide hole. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below, with examples of the embodiments shown in the appendix. Figures 1-12 As shown, the same or similar reference numerals throughout denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0046] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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 utility model.

[0047] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] In this embodiment of the 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 fixed 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 embodiment of the invention according to the specific circumstances.

[0049] In one embodiment of this utility model, such as Figures 1-5 , Figure 7 and Figures 9-10 As shown, a pre-circular welding machine is provided, comprising a frame 10 and a rotating circular assembly device 20 for reducing the gap between enclosed iron cores 60, a pre-circular material transfer device 40, and several welding devices 50 mounted on the frame 10. The rotating circular assembly device 20 is further provided with an inner circular support device 30. The rotating circular assembly device 20 and the inner circular support device 30 constitute the pre-circular assembly device. The inner circular support device 30 is mounted on the rotating end of the rotating circular assembly device 20, and the rotation axis of the inner circular support device 30 coincides with the rotation axis of the rotating circular assembly device 20, ensuring that the inner circular support device 30 and the rotating circular assembly device 20 rotate coaxially. This ensures that the iron core 60, which is reduced and enclosed by the rotating circular assembly device 20, can rotate tightly against the side wall at the top of the inner circular support device 30. During assembly, the inner circular support device 30 is mounted on the rotating end of the rotating circular assembly device 20. The rotating assembly device 20 is then fixedly installed on the frame 10. The pre-circular transfer device 40 is arranged adjacent to the rotating assembly device 20. The welding devices 50 are spaced around the rotating assembly device 20. The pre-circular transfer device 40 picks up the iron core 60 that has been preliminarily assembled into a circle and transfers it to the inner circle support device 30. The rotating assembly device 20 clamps the assembled iron core 60 so that it is tightly attached to the outer side of the end of the inner circle support device 30. The rotating assembly device 20 drives the inner circle support device 30 to rotate synchronously. The welding device 50 welds the gaps of the assembly. After welding, the rotating assembly device 20 rotates a certain angle, and the welding device 50 welds another gap of the assembly. This action is repeated until all gaps are welded. The rotating assembly device 20 releases the assembled iron core 60 and takes out the processed assembled iron core 60.

[0050] like Figures 1-5 and Figure 7As shown, the rotating assembly device 20 is assembled from a rotating mechanism 21 and an assembly clamping mechanism 22. The rotating mechanism 21 includes an outer shell 211, an inner shell 212, and a rotating motor 213. The top of the outer shell 211 has a clearance. The inner shell 212 is rotatably installed inside the outer shell 211, and a ring gear is provided on the bottom of the outer side of the inner shell 212. The rotating motor 213 is fixedly installed inside the frame 10, and its rotating end meshes with the ring gear. The rotating motor 213 pushes the inner shell 211... 12 rotates inside the outer shell 211. The round clamping mechanism 22 is fixedly installed on the inner shell 212 and passes through the clearance. The rotation of the inner shell 212 changes the angle of the iron core 60 clamped on the round clamping mechanism 22, completing the gap welding at various angles. The inner round support device 30 is fixedly installed at the bottom of the inner shell 212 and extends upward through the inner shell 212 and the round clamping mechanism 22. The inner round support device 30 and the round clamping mechanism 22 rotate synchronously, driving the assembled iron core 60 to rotate.

[0051] like Figures 1-7As shown, the circular clamping mechanism 22 is composed of a fixing component 221, a guide cover 222, a circular assembly turntable 223, a circular assembly motor 224, and a turntable 225. The fixing component 221 is used to push each iron core 60 to shrink and surround the side wall at the top of the inner circular support device 30. The fixing component 221 consists of a fixing plate 2211, a return spring 2212, a base 2213, and a sliding block 2214. The guide cover 222 has multiple first guide holes 2221 spaced apart. Each first guide hole 2221 is elongated and arranged symmetrically about the center of the guide cover 222. One end of each first guide hole 2221 extends towards the center of the guide cover 222. The centerline of 2221 coincides with the diameter of the guide cover 222. Multiple second guide holes 2231 are spaced apart on the circular turntable 223. Both the first and second guide holes 2221 are oblong holes. Each second guide hole 2231 is arranged symmetrically about the center of the circular turntable 223, and each second guide hole 2231 is bent and inclined towards the center of the circular turntable 223. One end of each second guide hole 2231 is close to the center of the circular turntable 223, and the other end is close to the outer edge of the circular turntable 223. The circular motor 224 is fixedly mounted on the inner housing 212 with its rotating end facing upwards, and the circular motor 224 is positioned close to the edge of the inner housing 212. The turntable 225 rotates. The rotating disk 225 is mounted on the inner housing 212, and the rotation axis of the rotating disk 225 coincides with the rotation axis of the inner housing 212. The rotating end of the circular motor 224 is meshed with the outer surface of the rotating disk 225, and the circular motor 224 drives the rotating disk 225 to rotate on the inner housing 212. The circular rotating disk 223 is fixedly mounted on the rotating disk 225. The guide cover 222 covers the rotating end of the circular motor 224, the rotating disk 225, and the circular rotating disk 223, and the guide cover 222 is fixedly connected to the top of the inner housing 212. Each of the first guide holes 2221 coincides with each of the second guide holes 2231. The sliding block 2214 of the fixing component 221 is located in the first guide hole 2221 and the second guide hole 2231. The base 2213 is fixedly mounted on the sliding block 2214. At the top of 214, a return spring 2212 is installed inside the base 2213. One end of the fixing plate 2211 is slidably disposed inside the base 2213, and both ends of the return spring 2212 abut against one end of the fixing plate 2211 and the inner side wall of the base 2213, respectively. The other end of the fixing plate 2211 is vertically arranged. When the other end of the fixing plate 2211 abuts against the iron core 60, it compresses the return spring 2212. The return spring 2212 reacts to ensure the tightness of the compression. During the circular contraction, the circular motor 224 rotates, driving the turntable 225 to rotate, which in turn drives the circular turntable 223 to rotate. The rotation of each second guide hole 2231 on the circular turntable 223 pushes the sliding block 2214 to slide along the first guide hole 2221.As the motor gradually approaches the center of the rotary table 223, it moves the base 2213 connected to the sliding block 2214, causing one end of the fixing plate 2211, which is slidably mounted in the base 2213, to abut against the iron core 60. This pushes the iron cores 60 together. Once they are in place, the fixing plate 2211 compresses the return spring 2212, using the reaction force of the return spring 2212 to ensure they are fully aligned. The rotary motor 224 then rotates in the opposite direction, and the fixing plates 2211 release the assembled iron cores 60.

[0052] like Figure 6 As shown, a roller is rotatably mounted on the bottom of the sliding block 2214. The roller is located in the second guide hole 2231, and the side wall of the roller abuts against the inner side wall of the second guide hole 2231. The relative movement of the sliding block 2214 is limited by the first guide hole 2221 and the second guide hole 2231, driving the roller to move with the sliding block 2214 and move back and forth in the second guide hole 2231. The first guide hole 2221 and the second guide hole 2231 intersect at a certain angle. The sliding block 2214 passes through the intersection of the first guide hole 2221 and the second guide hole 2231. When the circular turntable 223 rotates, the second guide hole 2231 begins to rotate around the center of the circular turntable 223. During the movement of the second guide hole 2231, the intersection position of the first guide hole 2221 and the second guide hole 2231 changes. During this process, the second guide hole 2231 pushes the sliding block 2214 to move back and forth in the first guide hole 2221.

[0053] like Figure 4 and Figure 8 As shown, the inner circular support device 30 is composed of a lifting mechanism 31 and a support column 32. The lifting mechanism 31 is fixedly installed at the bottom of the inner shell 212, and the lifting path of the lifting end of the lifting mechanism 31 coincides with the rotation axis of the inner shell 212. The support column 32 is fixedly installed on the lifting end of the lifting mechanism 31. The lifting mechanism 31 pushes the support column 32 to move up and down, and the support column 32 is located between each fixed plate 2211.

[0054] like Figures 9-11As shown, the pre-formed circular material transfer device 40 is assembled from a material transfer guide plate 41, a tensioning turntable 42, a cover plate 43, a mounting base 44, two lifting cylinders 45, at least one moving module 46, several positioning plates 47, and several clamping components 48. A robotic arm is mounted on the frame 10 and connected to the mounting base 44. The bottom plane of the material transfer guide plate 41 has multiple grooves 411 and multiple fourth guide holes 412. Each groove 411 is arranged symmetrically about the center of the material transfer guide plate 41, and one end of each groove 411 extends towards the center of the material transfer guide plate 41. Each fourth guide hole 412 is respectively located in each groove 411. The tensioning turntable 42 has multiple third guide holes. Hole 421, each of the third guide holes 421 is symmetrically arranged around the center of the tensioning turntable 42, and one end of each third guide hole 421 is bent and extended towards the center of the tensioning turntable 42. The tensioning turntable 42 is rotatably installed between the material transfer guide plate 41 and the cover plate 43. The material transfer guide plate 41 and the cover plate 43 are fixedly connected. Each third guide hole 421 and each fourth guide hole 412 are arranged in a one-to-one correspondence, and both the third guide holes 421 and the fourth guide holes 412 are oblong holes. One end of the clamping assembly 48 extends through the fourth guide hole 412 into the third guide hole 421, and the clamping assembly 48 is slidably connected to the slide groove 411. The clamping assembly 48 slides along the slide groove 411. When the tensioning turntable 42 rotates, the third guide hole 421 and the fourth guide hole 412 move relative to each other. The parts where the third guide hole 421 and the fourth guide hole 412 intersect are connected. When the tensioning turntable 42 rotates, the intersection position of the third guide hole 421 and the fourth guide hole 412 changes. The part of the clamping component 48 that passes through the intersection of the third guide hole 421 and the fourth guide hole 412 is pushed by the third guide hole 421 to slide back and forth along the sliding path in the stroke of the fourth guide hole 412. The moving module 46 is fixedly installed on the cover plate 43, and the moving end of the moving module 46 is engaged with the edge of the tensioning turntable 42. The two lifting air... Cylinder 45 is fixedly installed on mounting base 44, and cover plate 43 is fixedly installed on the lifting end of the bottom of two lifting cylinders 45. One end of each positioning plate 47 passes through the material transfer guide plate 41, tensioning turntable 42 and cover plate 43 in sequence and is connected to one end of mounting base 44. The lifting cylinder 45 is driven to change the length of the part of the positioning plate 47 protruding on the material transfer guide plate 41. The moving module 46 pushes the tensioning turntable 42 to rotate and change the positional relationship between the third guide hole 421 and the fourth guide hole 412 to push each clamping component 48 to gather and expand along the slide groove 411. After the clamping component 48 gathers and clamps the assembled iron core 60, the lifting cylinder 45 retracts and pushes out the extension end of the positioning plate 47 to engage and position with the assembled iron core 60.

[0055] like Figures 9-11As shown, the clamping assembly 48 is composed of clamping plates 481 and limiting plates 482. Each clamping plate 481 is slidably installed in each slide groove 411, and one end of the clamping plate 481 extends through the fourth guide hole 412 to the third guide hole 421. The change in the relative position between the third guide hole 421 and the fourth guide hole 412 pushes the clamping plate 481 to move back and forth along the slide groove 411. The limiting plate 482 is U-shaped and the opening of the limiting plate 482 is set towards the center of the material transfer guide plate 41. The limiting plate 482 is fixedly installed across the slide groove 411 on the material transfer guide plate 41, restricting the clamping plate 481 from moving out of the slide groove 411.

[0056] In use, the robotic arm drives the pre-circular material transfer device 40 to transfer each pre-circular iron core 60 from the previous process. The moving module 46 rotates the tensioning turntable 42 to clamp the iron core 60, and moves it to be placed on the support column 32 of the inner circle support device 30. The assembly motor 224 drives the assembly turntable 223 to bring together and clamp each iron core 60 with each fixing component 221, reducing the gap between each iron core 60. The welding device 50 welds the gap between two adjacent iron cores 60. After welding is completed, the rotary motor 213 drives the inner shell 212 to rotate, which in turn rotates the inner circle support device 30 and the assembly clamping mechanism 22, changing the angle of the combined iron core 60 after shrinking. The welding device 50 then welds the gap between another adjacent iron core 60. This action is repeated until all gaps between two adjacent iron cores 60 are welded. Each fixing component 221 expands and loosens the iron core 60, and the iron core 60 is removed to complete the welding operation, realizing the combined welding of the pre-circular iron cores 60.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-circular device, characterized in that: The device includes an inner circular support device and a rotating assembly device for reducing the gap between enclosed iron cores. The inner circular support device is installed on the rotating end of the rotating assembly device. The lifting end of the inner circular support device extends upward and penetrates the rotating assembly device. The rotation axis of the rotating assembly device and the rotation axis of the inner circular support device are coincident. The rotating assembly device is provided with a plurality of limiting and locking mechanisms that are symmetrical about the central axis of the rotating assembly device. Each of the limiting and locking mechanisms is arranged around the lifting end of the inner circular support device.

2. The pre-circular device according to claim 1, characterized in that: The rotating circle assembly device includes a rotating mechanism and a circle assembly clamping mechanism. The circle assembly clamping mechanism is installed on the rotating end of the rotating mechanism, and the inner circle support device is installed below the rotating mechanism. The lifting end of the inner circle support device extends upward and passes through the rotating mechanism and the circle assembly clamping mechanism in sequence.

3. The pre-circular device according to claim 2, characterized in that: The circular clamping mechanism includes a fixing component, a guide cover, a circular assembly turntable, a circular assembly motor, and a turntable. The circular assembly motor is fixedly mounted on the rotating end of the rotating mechanism, and the turntable is rotatably mounted on the rotating end of the rotating mechanism. The output end of the circular assembly motor is meshed with the turntable. The circular assembly turntable is mounted on the turntable. The guide cover covers the circular assembly turntable, the circular assembly motor, and the turntable, and is fixedly connected to the rotating end of the rotating mechanism. The guide cover has a plurality of centrally rotationally symmetrical first guide holes spaced apart. The circular assembly turntable has a plurality of centrally rotationally symmetrical second guide holes spaced apart. Each second guide hole is inclined toward the center of the circular assembly turntable. Each first guide hole corresponds to each second guide hole. The bottom of the fixing component passes through the first guide holes and the second guide holes in sequence. When the circular assembly turntable rotates, the second guide holes push the fixing component to slide back and forth along the first guide holes.

4. The pre-circular device according to claim 3, characterized in that: The fixing assembly includes a fixing plate, a return spring, a base, and a sliding block. The sliding block passes through the first guide hole and the second guide hole in sequence. The base is fixedly installed on the top of the sliding block. One end of the fixing plate is slidably disposed in the base, and the other end of the fixing plate is disposed towards the central axis of the circular turntable. The two ends of the return spring abut against the end of the fixing plate and the inner side of the base, respectively.

5. The pre-circular device according to claim 4, characterized in that: The bottom of the sliding block is rotatably equipped with a roller, which is located in the second guide hole.

6. The pre-circular device according to claim 2, characterized in that: The rotating mechanism includes an outer shell, an inner shell, and a rotating motor. The inner shell is rotatably mounted inside the outer shell. The circular clamping mechanism is mounted on the inner shell. The rotating end of the rotating motor is meshed with the outer side of the inner shell. The inner circular support device is mounted at the bottom of the inner shell, and the lifting end of the inner circular support device extends upward and passes through the inner shell and the circular clamping mechanism in sequence.

7. The pre-circular device according to claim 1, characterized in that: The inner circular support device includes a lifting mechanism and a support column. The lifting mechanism is installed in the rotating circular assembly, and the lifting end of the lifting mechanism extends upward through the rotating circular assembly. The support column is installed on the lifting end of the lifting mechanism.

8. A pre-circle welding machine, comprising the pre-circle device according to any one of claims 1 to 7, characterized in that: It also includes a frame, a pre-circular material transfer device and several welding devices, with each welding device spaced apart around the rotating circular assembly device, and the pre-circular material transfer device being arranged adjacent to the rotating circular assembly device.

9. The pre-forming circle welding machine according to claim 8, characterized in that: The pre-formed circular material transfer device includes a material transfer guide plate, a tensioning turntable, a cover plate, a mounting base, two lifting cylinders, at least one moving module, several positioning plates, and several clamping components. The mounting base is connected to the frame via a robotic arm. The two lifting cylinders are respectively fixedly installed on both sides of the mounting base, with the lifting ends of the cylinders facing downwards. The cover plate is fixedly installed on the lifting ends of the two lifting cylinders. The moving module is fixedly installed on the cover plate. The material transfer guide plate is installed at the bottom of the cover plate. The tensioning turntable is rotatably installed between the material transfer guide plate and the cover plate, and the moving end of the moving module is connected to the positioning plate. The edges of the tensioning turntable are engaged. One end of each positioning plate passes through the transfer guide plate, the tensioning turntable, and the cover plate in sequence and is connected to the bottom of the mounting base. Each positioning plate is symmetrically arranged around the central axis of the transfer guide plate. The tensioning turntable is provided with a plurality of centrally symmetrical third guide holes at intervals. Each third guide hole is inclined toward the center of the tensioning turntable. The transfer guide plate is provided with a plurality of centrally symmetrical fourth guide holes at intervals. One end of each clamping component passes through the fourth guide hole and the third guide hole in sequence, and each clamping component is respectively disposed between two positioning plates.

10. The pre-forming circle welding machine according to claim 9, characterized in that: The bottom of the material transfer guide plate is provided with a plurality of sliding grooves, each of the sliding grooves being arranged in a central rotational symmetry about the center of the material transfer guide plate, and each of the fourth guide holes being respectively provided in each of the sliding grooves, and each of the clamping components being slidably connected to each of the sliding grooves.

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