Stator core bending into a circle device

Abstract

The application provides a stator core bending into a circle device, and relates to the technical field of motor production equipment, which comprises a workbench, a center seat for placing the stator core is arranged in the middle of the workbench, and a circle forming seat is arranged on the center seat; a first pressing mechanism is arranged for driving the core blocks in the middle of the stator core to rotate to be attached to the circle forming seat; two groups of second pressing mechanisms are arranged on the two sides of the first pressing mechanism for driving the core blocks on the two sides of the stator core to rotate to be attached to the circle forming seat; the second pressing mechanism comprises a longitudinal moving assembly, a transverse moving assembly and a pressing rod, the pressing rod is used for abutting against the core blocks, the longitudinal moving assembly is used for driving the pressing rod to slide along the length direction of the workbench, and the transverse moving assembly is used for driving the pressing rod to slide along the width direction of the workbench; a pressing mechanism is arranged for pressing the core blocks on the end protrusions to be flush with other core blocks. The application can conveniently and quickly complete the circle forming process of the stator core, and can directly complete the splicing operation after the circle forming.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing equipment technology, and more specifically, to a device for bending stator cores into a circle. Background Technology

[0002] Chain-type stator cores are easy to wind and assemble. To form a circular structure, the straight-chain stator core needs to be bent to create a circular chain. However, current circularization devices often use multiple pressing mechanisms, each corresponding to a core segment, to press the segments together to form the circular chain. Alternatively, the straight-chain stator core can be bent into an approximate circular shape and then manually adjusted to achieve the final circular structure. Furthermore, current chain-type stator cores require welding at the joints after circularization, and for structures connected by splicing, there is currently no matching pressing mechanism, necessitating an additional splicing and pressing process. Summary of the Invention

[0003] The purpose of this invention is to provide a device for bending stator cores into circles, which can conveniently and quickly complete the process of bending stator cores into circles without using too many pressing mechanisms, and can be directly spliced ​​after bending to form a stable stator core structure.

[0004] This invention is achieved through the following technical solution: a device for bending a stator core into a circle, comprising: The workbench has a central seat for placing the stator core in the middle, and a circular seat is provided in the middle of the central seat. The first pressing mechanism is used to drive the core blocks in the middle of the stator core to rotate until they are in contact with the rounding seat; the first pressing mechanism includes a pressing seat and a first cylinder for driving the pressing seat to move toward the rounding seat. Two sets of second pressing mechanisms are arranged on both sides of the first pressing mechanism to drive the core blocks on both sides of the stator core to rotate until they are in contact with the round seat; the second pressing mechanism includes a longitudinal moving assembly, a transverse moving assembly and a pressing rod, the pressing rod is used to abut against the core blocks, the longitudinal moving assembly is used to drive the pressing rod to slide along the length direction of the worktable, and the transverse moving assembly is used to drive the pressing rod to slide along the width direction of the worktable; The pressing mechanism is located on the side of the center seat away from the first pressing mechanism, and is used to press the iron core blocks located at the end protrusions until they are flush with the other iron core blocks.

[0005] Furthermore, the longitudinal movement assembly includes a longitudinal movement seat, which is slidably disposed on the worktable, and a second cylinder is disposed on the worktable for driving the longitudinal movement seat to move along the length direction of the worktable; the transverse movement assembly includes a transverse movement seat, and a third cylinder is disposed on the top of the longitudinal movement seat for driving the transverse movement seat to move along the width direction of the worktable.

[0006] Furthermore, the transverse shift seat includes a fixed part and a rotating part. The rotating part is rotatably connected to the fixed seat via a rotating shaft. A torsion member is connected between the fixed part and the rotating part to drive the rotating part to rotate in a direction closer to the first pressing mechanism. The longitudinal shift seat is provided with a limiting member to restrict the rotation of the rotating part driven by the torsion member.

[0007] Furthermore, the torsion member is a torsion spring, and the bottom of the rotating part is provided with a mounting groove. The torsion spring is sleeved on the rotating shaft and located in the mounting groove. One end of the torsion spring is fixedly connected to the fixed part, and the other end is fixedly connected to the rotating part.

[0008] Furthermore, the limiting member includes a vertical section and a horizontal section. The vertical section is vertically arranged on the longitudinal sliding seat, and the horizontal section is horizontally arranged at the top of the vertical section and is in contact with the rotating part. When the fixing part drives the rotating part to move until the rotating part separates from the horizontal section, the torsion member can drive the rotating part to rotate.

[0009] Furthermore, the pressing rod has a strip groove along its length, a positioning bolt is slidably disposed in the strip groove, and the rotating part has a threaded hole for the positioning bolt to be inserted.

[0010] Furthermore, the pressing mechanism includes a support base, on which a fourth cylinder is mounted, and on the piston rod of the fourth cylinder is a pressing block.

[0011] Furthermore, the support base is vertically arranged, the fourth cylinder is horizontally arranged, the pressing block moves along the radial direction of the circular base, and the bottom surface of the pressing block is provided with an arc-shaped abutment surface.

[0012] Furthermore, the pressing seat has a relief groove in the middle of the side facing the round seat, and two pressing arms are formed on both sides of the relief groove. The bottom of the pressing arms and the pressing rod are provided with rolling pressing parts.

[0013] Furthermore, the rolling pressing component includes a central column and a bearing rotatably connected to the bottom of the central column. The bottom of the central column is provided with an abutment piece, and the top is provided with an external thread and a positioning nut is threadedly connected to it.

[0014] The technical solution of the present invention has at least the following advantages and beneficial effects: 1. This invention applies pressure to the core blocks located in the middle of the stator core through a first pressing mechanism, causing the core blocks in the middle of the stator core to rotate and fit against the rounding seat; the longitudinal moving component drives the pressing rod to slide along the length direction of the worktable to press the core blocks, causing the core blocks located between the central and edge regions to rotate and fit against the rounding seat; finally, the transverse moving component drives the pressing rod to slide along the width direction of the worktable to press the core blocks, causing the core blocks located in the edge regions to rotate and fit against the rounding seat. This eliminates the need for multiple sets of pressing mechanisms corresponding to each core block for rounding operations, enabling convenient and quick completion of the stator core rounding process.

[0015] 2. The present invention provides rolling pressing elements at the bottom of both the pressing arm and the pressing rod. When the first pressing mechanism and the second pressing mechanism press the iron core blocks, the pressing arm and the pressing rod will not directly press against the iron core blocks. Instead, the rolling pressing elements will roll and contact while applying pressing force, thereby reducing the friction during the pressing process.

[0016] 3. The present invention sets the transverse seat as a rotatable structure composed of a fixed part and a rotating part, and restricts the rotation of the rotating part by a limiting member. When the rotating part moves to the point of separation from the limiting member, it is no longer limited by the limiting member. The torsion member can drive the rotating part to rotate towards the first pressing mechanism, thereby applying a thrust towards the center of the rounding seat to the iron core block located at the end, so that the iron core block can fit more closely with the rounding seat.

[0017] 4. By setting up a pressing mechanism, when the pressing block is moved by the fourth cylinder, the arc-shaped contact surface can apply downward pressure to the protruding iron core block located at the end, thereby pressing the protruding iron core block down to be flush with other iron core blocks, so as to complete the connection process of the iron core blocks at both ends after the rounding, and keep the stator iron core in the rounded state. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the first pressing mechanism of the present invention pressing against the stator core; Figure 3 This is a schematic diagram of the structure of the second pressing mechanism of the present invention pressing against the stator core; Figure 4 This is a schematic diagram of the structure of the pressing mechanism of the present invention when pressing the stator core; Figure 5 This is a schematic diagram of the structure of the first pressing mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the second pressing mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the limiting member, the transverse sliding seat, and the pressing rod on the longitudinal sliding seat of the present invention; Figure 8 This is a schematic diagram of the transverse sliding seat of the present invention; Figure 9 This is a schematic diagram of the pressing mechanism of the present invention; Reference numerals: 1-Worktable, 11-Center seat, 12-Circular seat, 2-First pressing mechanism, 21-Pressing seat, 211-Allowing groove, 212-Pressing arm, 22-First cylinder, 3-Second pressing mechanism, 31-Longitudinal movement assembly, 311-Longitudinal movement seat, 312-Second cylinder, 32-Transverse movement assembly, 321-Transverse movement seat, 3211-Fixed part, 3212-Rotating part, 3213-Rotating part Shaft, 3214-torsion component, 322-third cylinder, 33-pressure rod, 331-strip groove, 332-positioning bolt, 4-pressing mechanism, 41-support seat, 42-fourth cylinder, 43-pressing block, 431-arc abutment surface, 5-limiting component, 51-vertical section, 52-horizontal section, 6-rolling pressure component, 61-center column, 611-abutment piece, 62-bearing, 63-positioning nut. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] The following is for reference Figures 1-9 As shown in the illustration, and further explained with reference to specific embodiments, this embodiment provides a device for bending a stator core into a circle. Figure 1 , Figure 2 , Figure 3As shown, the device includes a worktable 1, a first pressing mechanism 2, two sets of second pressing mechanisms 3, and a pressing mechanism 4. A central seat 11 for placing the stator core is located in the center of the worktable 1, and a rounding seat 12 is located in the center of the central seat 11. The first pressing mechanism 2 drives the core blocks in the center of the stator core to rotate until they are in contact with the rounding seat 12. The two sets of second pressing mechanisms 3 are respectively located on both sides of the first pressing mechanism 2, and are used to drive the core blocks on both sides of the stator core to rotate until they are in contact with the rounding seat 12. (Refer to...) Figure 4 As shown, the pressing mechanism 4 is located on the side of the center seat 11 away from the first pressing mechanism 2, and is used to press the iron core block located at the end protrusion until it is flush with the other iron core blocks.

[0022] The stator core is placed on the center seat 11, so that the stator core is located on the side of the rounding seat 12 facing the first pressing mechanism 2, and the center position of the stator core in the length direction is directly opposite the center position of the rounding seat 12. The first pressing mechanism 2 applies a pressing force to the stator core, which can make the core block located in the middle of the stator core rotate to fit with the rounding seat 12. Then, the second pressing mechanisms 3 on both sides continue to press the stator core, so that the core blocks located on both sides of the stator core rotate towards the rounding seat 12 and fit with the rounding seat 12. Since the process of switching the stator core from a straight chain structure to a circular chain structure requires the core blocks at both ends to be connected by pressing, the core block with a protrusion at one end is higher than the other core blocks before pressing. The pressing mechanism 4 presses the core block with a protrusion at the end to be flush with the other core blocks, which can conveniently and quickly complete the connection process after the stator core is rounded.

[0023] Reference Figure 5 As shown, the first pressing mechanism 2 includes a pressing seat 21 and a first cylinder 22 for driving the pressing seat 21 to move closer to the circular seat 12. A clearance groove 211 is formed in the middle of the pressing seat 21 facing the circular seat 12, and two pressing arms 212 are formed on both sides of the clearance groove 211. (Refer to...) Figure 2 , Figure 3As shown, the second pressing mechanism 3 includes a longitudinal moving component 31, a transverse moving component 32, and a pressing rod 33. The pressing rod 33 is used to abut against the iron core block. The longitudinal moving component 31 is used to drive the pressing rod 33 to slide along the length direction of the worktable 1, and the transverse moving component 32 is used to drive the pressing rod 33 to slide along the width direction of the worktable 1. The first cylinder 22 drives the pressing seat 21 to move closer to the rounding seat 12, so that the pressing arm 212 can press the core block located in the central region of the stator core, so that the core block in the central region rotates and fits against the rounding seat 12; then the longitudinal moving assembly 31 drives the pressing rod 33 to slide along the length direction of the worktable 1, and the pressing rod 33 presses against the core block along the length direction of the worktable 1, so that the core block located between the central region and the edge region rotates and fits against the rounding seat 12; finally, the transverse moving assembly 32 drives the pressing rod 33 to slide along the width direction of the worktable 1, and the pressing rod 33 presses against the core block along the width direction of the worktable 1, so that the core block located in the edge region rotates and fits against the rounding seat 12.

[0024] Reference Figure 5 , Figure 6 As shown, both the bottom of the pressing arm 212 and the pressing rod 33 are provided with rolling pressing parts 6. When the first pressing mechanism 2 and the second pressing mechanism 3 press the iron core blocks, the pressing arm 212 and the pressing rod 33 do not directly press against the iron core blocks. Instead, the rolling pressing parts 6 apply pressing force while rolling, thereby reducing the friction during the pressing process and avoiding rigid collisions that could damage the stator iron core. The rolling pressing parts 6 include a central column 61 and a bearing 62 rotatably connected to the bottom of the central column 61. The bottom of the central column 61 is provided with an abutment piece 611, and the top is threaded with an external thread and a positioning nut 63 is threadedly connected. During the pressing process, the bearing 62 contacts the iron core blocks in a line contact manner, and the outer ring of the bearing 62 can rotate while pressing, thus significantly reducing the friction generated.

[0025] Reference Figure 6As shown, the longitudinal movement assembly 31 includes a longitudinal movement seat 311, which is slidably disposed on the worktable 1. A second cylinder 312 is provided on the worktable 1 to drive the longitudinal movement seat 311 to move along the length direction of the worktable 1. The transverse movement assembly 32 includes a transverse movement seat 321, and a third cylinder 322 is provided on the top of the longitudinal movement seat 311 to drive the transverse movement seat 321 to move along the width direction of the worktable 1. When the second cylinder 312 drives the longitudinal shift seat 311 to move, the longitudinal shift seat 311 can drive the third cylinder 322, the transverse shift seat 321 and the pressing rod 33 to move simultaneously along the length direction of the worktable 1, so that the pressing rod 33 drives the rolling pressing member 6 to press the iron core blocks located between the central area and the edge area; when the longitudinal shift seat 311 moves to the designated position, when the third cylinder 322 drives the transverse shift seat 321 to move, the transverse shift seat 321 can drive the pressing rod 33 to move along the width direction of the worktable 1, so that the pressing rod 33 drives the rolling pressing member 6 to press the iron core blocks located in the edge area.

[0026] Reference Figure 7 , Figure 8 As shown, the transverse shift seat 321 includes a fixed part 3211 and a rotating part 3212. The rotating part 3212 is rotatably connected to the fixed seat via a rotating shaft 3213. A torsion member 3214 is connected between the fixed part 3211 and the rotating part 3212 to drive the rotating part 3212 to rotate toward the first pressing mechanism 2. A limiting member 5 is provided on the longitudinal shift seat 311 to limit the rotation of the rotating part 3212 driven by the torsion member 3214. When the fixed part 3211 drives the rotating part 3212 to move along the width direction of the worktable 1, when the rotating part 3212 is not separated from the limiting member 5, the limiting member 5 can restrict the rotating part 3212 from rotating due to the torsion member 3214. Therefore, the rotating part 3212 will not rotate during this process. When the rotating part 3212 moves to the point where it is separated from the limiting member 5 and is no longer limited by the limiting member 5, the torsion member 3214 can drive the rotating part 3212 to rotate, so that the rotating part 3212 rotates towards the rolling pressing member 6 and closer to the first pressing mechanism 2, thereby applying a thrust towards the center of the round seat 12 to the iron core block located at the end, so that the iron core block can have a higher degree of fit with the round seat 12.

[0027] The pressing rod 33 has a slot 331 along its length, and a positioning bolt 332 is slidably disposed within the slot 331. The rotating part 3212 has a threaded hole for inserting the positioning bolt 332. By creating the slot 331 on the pressing rod 33, the position of the positioning bolt 332 within the slot 331 can be changed, thus allowing the position of the pressing rod 33 to be adjusted according to processing requirements.

[0028] Reference Figure 8As shown, in this embodiment, the torsion member 3214 is a torsion spring. A mounting groove is provided at the bottom of the rotating part 3212. The torsion spring is sleeved on the rotating shaft 3213 of the rotating part 3212 and located within the mounting groove. One end of the torsion spring is fixedly connected to the fixed part 3211, and the other end is fixedly connected to the rotating part 3212. When the rotating part 3212 is not separated from the limiting member 5, the torsion spring has elastic potential energy to drive the rotating part 3212 to rotate. When the rotating part 3212 is separated from the limiting member 5, the elastic potential energy of the torsion spring is released, thus enabling the rotating part 3212 to rotate. The limiting member 5 includes a vertical section 51 and a horizontal section 52. The vertical section 51 is vertically arranged on the longitudinal shift seat 311, and the horizontal section 52 is horizontally arranged at the top of the vertical section and is in contact with the rotating part 3212. When the fixed part 3211 drives the rotating part 3212 to move until the rotating part 3212 is separated from the horizontal section 52, the rotating part 3212 is no longer limited by the horizontal section 52, so the torsion spring can drive the rotating part 3212 to rotate.

[0029] Reference Figure 4 , Figure 9 As shown, the pressing mechanism 4 includes a support base 41, which is vertically arranged; a fourth cylinder 42 is mounted on the support base 41, which is horizontally arranged; a pressing block 43 is mounted on the piston rod of the fourth cylinder 42, and the pressing block 43 moves radially along the rounding seat 12 under the push of the fourth cylinder 42. The bottom surface of the pressing block 43 is provided with an arc-shaped abutment surface 431. When the fourth cylinder 42 drives the pressing block 43 to move, the arc-shaped abutment surface 431 can apply downward pressure to the protruding iron core block located at the end, thereby pressing the protruding iron core block downward until it is flush with other iron core blocks. During this process, this iron core block can complete the connection process with the iron core block at the other end of the stator iron core, keeping the stator iron core in the rounded state.

[0030] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for bending a stator core into a circle, characterized in that, include: Workbench (1), the middle of the workbench (1) is provided with a central seat (11) for placing the stator core, and the middle of the central seat (11) is provided with a circular seat (12); The first pressing mechanism (2) is used to drive the core blocks in the middle of the stator core of the straight chain structure to rotate to fit against the round seat (12); the first pressing mechanism (2) includes a pressing seat (21) and a first cylinder (22) for driving the pressing seat (21) to move closer to the round seat (12); Two sets of second pressing mechanisms (3) are arranged on both sides of the first pressing mechanism (2) to drive the core blocks on both sides of the stator core to rotate and fit against the round seat (12); the second pressing mechanism (3) includes a longitudinal moving component (31), a transverse moving component (32) and a pressing rod (33), the pressing rod (33) is used to abut against the core blocks, the longitudinal moving component (31) is used to drive the pressing rod (33) to slide along the length direction of the worktable (1), and the transverse moving component (32) is used to drive the pressing rod (33) to slide along the width direction of the worktable (1); The pressing mechanism (4) is located on the side of the center seat (11) away from the first pressing mechanism (2) and is used to press the iron core block located at the end protrusion until it is flush with other iron core blocks. The pressing seat (21) has a relief groove (211) in the middle of the side facing the round seat (12). Two pressing arms (212) are formed on both sides of the relief groove (211). Rolling pressing parts (6) are provided at the bottom of the pressing arms (212) and the pressing rod (33).

2. The stator core bending device according to claim 1, characterized in that, The longitudinal moving assembly (31) includes a longitudinal moving seat (311), which is slidably disposed on the worktable (1). A second cylinder (312) is provided on the worktable (1) for driving the longitudinal moving seat (311) to move along the length direction of the worktable (1). The transverse moving assembly (32) includes a transverse moving seat (321), and a third cylinder (322) is provided on the top of the longitudinal moving seat (311) for driving the transverse moving seat (321) to move along the width direction of the worktable (1).

3. The stator core bending device according to claim 2, characterized in that, The transverse shift seat (321) includes a fixed part (3211) and a rotating part (3212). The rotating part (3212) is rotatably connected to the fixed seat via a rotating shaft (3213). A torsion member (3214) is connected between the fixed part (3211) and the rotating part (3212) to drive the rotating part (3212) to rotate toward the first pressing mechanism (2). A limiting member (5) is provided on the longitudinal shift seat (311) to limit the rotation of the rotating part (3212) driven by the torsion member (3214).

4. The stator core bending device according to claim 3, characterized in that, The torsion member (3214) is a torsion spring. The bottom of the rotating part (3212) is provided with an installation groove. The torsion spring is sleeved on the rotating shaft (3213) and located in the installation groove. One end of the torsion spring is fixedly connected to the fixed part (3211) and the other end is fixedly connected to the rotating part (3212).

5. The stator core bending device according to claim 3, characterized in that, The limiting member (5) includes a vertical section (51) and a horizontal section (52). The vertical section (51) is vertically arranged on the longitudinal shift seat (311). The horizontal section (52) is horizontally arranged at the top of the vertical section and is in contact with the rotating part (3212). When the fixed part (3211) drives the rotating part (3212) to move to the point where the rotating part (3212) is separated from the horizontal section (52), the torsion member (3214) can drive the rotating part (3212) to rotate.

6. The stator core bending device according to claim 3, characterized in that, The pressing rod (33) has a strip groove (331) along its own length direction, and a positioning bolt (332) is slidably disposed in the strip groove (331). The rotating part (3212) has a threaded hole for the positioning bolt (332) to be inserted.

7. The stator core bending device according to claim 1, characterized in that, The pressing mechanism (4) includes a support base (41), on which a fourth cylinder (42) is provided, and on the piston rod of the fourth cylinder (42) a pressing block (43) is provided.

8. The stator core bending device according to claim 7, characterized in that, The support base (41) is vertically arranged, the fourth cylinder (42) is horizontally arranged, the pressing block (43) moves along the radial direction of the circular base (12), and the bottom surface of the pressing block (43) is provided with an arc-shaped abutment surface (431).

9. The stator core bending device according to claim 1, characterized in that, The rolling pressing component (6) includes a central column (61) and a bearing (62) rotatably connected to the bottom of the central column (61). The bottom of the central column (61) is provided with an abutment piece (611), and the top is provided with an external thread and a positioning nut (63) is threadedly connected.

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