Iron core riveting press
By utilizing the pre-pressing, testing, and riveting components of the iron core riveting machine, the problems of material waste and low efficiency caused by quality issues during the iron core riveting process are solved, achieving a highly efficient and stable iron core riveting process.
Patent Information
- Application Number
- CN202423242221.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In the existing technology, during the core riveting process, the quality of a single core can easily lead to the overall failure of the stator, resulting in material waste and low efficiency.
The iron core riveting machine includes a worktable, riveting fixture, pre-compression assembly, detection assembly, and riveting assembly. The riveting fixture moves along the guide rail, the pre-compression assembly performs pre-compression, the detection assembly performs height detection, and after passing the height test, the riveting assembly performs riveting to ensure the stability and accuracy of the iron core.
It improves the efficiency and pass rate of iron core riveting, reduces material waste, and ensures the stability and accuracy of the riveting process.
Smart Images
Figure CN223789492U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of stator riveting technology, and in particular to a core riveting press. Background Technology
[0002] Stator riveting is a crucial step in motor manufacturing, especially in the assembly of the stator core. Using a riveting machine, multiple cores can be riveted together to form a complete stator structure.
[0003] Currently, in the process of riveting iron cores to form a stator as a whole, the common practice is to place multiple iron cores directly on a dedicated riveting fixture, and then transport the riveting fixture and the iron cores together to the riveting area of the riveting machine for riveting, thereby riveting multiple iron cores into a stator as a whole.
[0004] However, sometimes after riveting, a quality problem with a single iron core can cause the entire stator to be defective. This is not only time-consuming and labor-intensive, but also results in a waste of iron core material. Utility Model Content
[0005] To improve the efficiency of riveting iron cores into stators, this application provides an iron core riveting press.
[0006] The iron core riveting machine provided in this application adopts the following technical solution:
[0007] A core riveting machine for riveting cores includes a worktable, riveting fixtures, a pre-loading assembly, a testing assembly, and a riveting assembly, wherein:
[0008] The riveting fixture is mounted on the workbench, and the riveting fixture slides in conjunction with the workbench. It passes through the pre-compression component, the detection component and the riveting component along a predetermined route via a first power source.
[0009] Optionally, the riveting fixture includes a transfer platform and a placement seat, wherein:
[0010] The transfer platform is mounted on the workbench;
[0011] The placement seat is installed on the transfer platform, and the inner wall of the placement seat is provided with an annular placement groove, and the inner wall of the placement groove is provided with a positioning groove for inserting the iron core.
[0012] A support is provided between the placement seat and the workbench.
[0013] Optionally, the support member includes a first support column and a second support column, wherein:
[0014] The first support column is installed at the bottom of the placement base and penetrates the transfer platform;
[0015] The second support column is mounted on the workbench;
[0016] The bottom of the first support column can contact the top of the second support column.
[0017] Optionally, the pre-compression assembly includes a mounting bracket and an extruder, wherein:
[0018] The mounting bracket is installed on the workbench;
[0019] The extrusion component is mounted on the mounting frame, and the extrusion component slides in conjunction with the mounting frame. The extrusion component moves vertically via a second power source.
[0020] Optionally, the extrusion member includes an outer ring extrusion unit and an inner ring extrusion unit, and the second power source includes a first power unit and a second power unit, wherein;
[0021] The outer ring extrusion unit moves vertically via the first power unit;
[0022] The inner ring extrusion unit moves vertically via the second power unit;
[0023] The inner and outer extrusion units work together to press against the iron core.
[0024] Optionally, the detection component includes a vision camera mounted above the worktable.
[0025] Optionally, the riveting assembly includes a servo press and a limiting part, wherein:
[0026] The servo press is mounted on the workbench;
[0027] The limiting part moves vertically via a third power source.
[0028] Optionally, the limiting part includes a limiting ring and a telescopic rod, wherein:
[0029] The telescopic rod is installed at the bottom of the limiting ring, and the telescopic rod is distributed circumferentially along the central axis of the limiting ring;
[0030] The side wall of the placement seat has several abutment interfaces distributed circumferentially along the central axis of the placement seat. The telescopic rod is inserted into the abutment interface, and the push rod end of the telescopic rod can contact the iron core.
[0031] Optionally, the outer ring extrusion unit includes a reference ring, a clamping ring, and a spring, wherein:
[0032] The reference ring is horizontally mounted on the first power unit;
[0033] The clamping ring is horizontally installed below the reference ring, and the top of the clamping ring is provided with a guide rod, which passes through the reference ring and slides with the reference ring in the vertical direction;
[0034] The spring is sleeved on the guide rod, with one end of the spring in contact with the clamping ring and the other end of the spring in contact with the reference ring.
[0035] Optionally, the inner ring extrusion unit includes a mounting plate and an extrusion rod, wherein:
[0036] The mounting plate is installed on the second power unit;
[0037] The extrusion rod is vertically mounted on the mounting plate, and an elastic unit is provided between the extrusion rod and the mounting plate.
[0038] In summary, this application includes at least one of the following beneficial technical effects:
[0039] 1. First, the iron core is placed in the riveting fixture, which moves along the guide rail to below the pre-compression assembly. The pre-compression assembly pre-compresses the iron core. After pre-compression, the iron core is moved to below the inspection assembly, where a vision camera measures its height to ensure it meets the set value. If the iron core height is acceptable, the riveting fixture moves the iron core to the riveting assembly for riveting; if it is unacceptable, it returns to the initial position, the iron core is replaced, and the inspection is repeated. The riveting fixture moves along the guide rail via a threaded rod and a drive motor. The outer and inner extrusion units in the pre-compression assembly work together to ensure the stability of the iron core pre-compression. The vision camera in the inspection assembly accurately measures the iron core height, while the servo press and limit unit in the riveting assembly work together to precisely rivet the iron core using a telescopic cylinder, ensuring the overall stability of the iron core during the riveting process, reducing the risk of deformation, and improving riveting efficiency and yield. Attached Figure Description
[0040] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0041] Figure 2 This is a schematic diagram illustrating the placement seat structure in an embodiment of this application.
[0042] Figure 3 This is a schematic diagram illustrating the relative positions of the pre-compression component and the riveting component in the embodiments of this application.
[0043] Figure 4 This is a schematic diagram illustrating the structure of the outer ring extrusion unit in the embodiments of this application.
[0044] Figure 5 This is a schematic diagram illustrating the inner ring extrusion unit structure in an embodiment of this application.
[0045] Explanation of reference numerals in the attached figures:
[0046] 1. Workbench; 2. Riveting fixture; 21. Transfer platform; 22. Placement seat; 221. Placement slot; 222. Positioning slot; 223. Abutment interface; 23. First power source; 24. Support component; 241. First support column; 242. Second support column; 3. Pre-compression assembly; 31. Mounting bracket; 32. Extrusion component; 321. Outer ring extrusion unit; 3211. Reference ring; 3212. Clamping ring; 3213. Spring; 322. Inner ring extrusion unit; 3221. Mounting plate; 3222. Extrusion rod; 33. Second power source; 331. First power unit; 332. Second power unit; 4. Detection assembly; 5. Riveting assembly; 51. Servo press; 52. Limiting part; 521. Limiting ring; 522. Telescopic rod; 6. Iron core. Detailed Implementation
[0047] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.
[0048] This application discloses a core riveting machine.
[0049] A core riveting machine includes a worktable 1, a riveting fixture 2, a pre-pressing assembly 3, a detection assembly 4, and a riveting assembly 5. These components are all mounted on the worktable 1. The riveting fixture 2 can slide along a predetermined path on the worktable 1 and sequentially passes through the pre-pressing assembly 3, the detection assembly 4, and the riveting assembly 5, driven by a first power source 23. Before riveting the core 6, the core 6 is first placed inside the riveting fixture 2. The riveting fixture 2 then moves the core 6 under the pre-pressing assembly 3, where the pre-pressing assembly 3 pre-presses the core 6. After pre-pressing, the core 6 is moved under the detection assembly 4, which measures the height of the core 6. If the height of the core 6 meets the set value, the core 6 is moved under the riveting assembly 5 for riveting; if the height of the core 6 exceeds the set range, the core 6 is returned to its initial position, and the operator replaces the core 6 that exceeds the height range, and the pre-pressing and height detection are repeated. This design improves the efficiency of riveting the stator core 6 and increases the pass rate of the riveted stator core 6.
[0050] The first power source 23 consists of a guide rail, a threaded rod, and a drive motor. The guide rail is fixedly mounted on the worktable 1, and typically has two parallel guide rails. The riveting fixture 2 is mounted on the guide rail and slides against it via the threaded rod, which passes through the riveting fixture 2 and is threadedly connected to it. The drive motor is fixed to the worktable 1, and its shaft engages with the threaded rod to drive the riveting fixture 2 to move along the guide rail.
[0051] The riveting fixture 2 includes a transfer platform 21 and a placement seat 22. The transfer platform 21 is mounted on a guide rail, and a threaded rod passes through the transfer platform 21 and is threadedly connected to it. The placement seat 22 is fixedly installed on the top of the transfer platform 21 and has an annular placement groove 221 inside. The inner wall of the groove has several positioning grooves 222 circumferentially arranged along the axial direction. The iron core 6 is inserted into the positioning groove 222 to ensure the stability of the iron core 6. One side of the iron core 6 has a riveting groove, and the other side has a riveting strip. The riveting strip is inserted into the riveting groove to enhance the stability of the iron core 6.
[0052] To improve the structural stability of the placement base 22, a support member 24 is provided between the placement base 22 and the worktable 1, including a first support column 241 and a second support column 242. The first support column 241 is fixedly installed at the bottom of the placement base 22, and its axis coincides with the central axis of the placement base 22. The second support column 242 is fixedly installed on the worktable 1, and there are usually two of them, located below the pre-compression assembly 3 and the riveting assembly 5, respectively. When the first support column 241 moves above the second support column 242, the bottom of the first support column 241 contacts the top of the second support column 242, and the two cooperate to support the placement base 22, reducing the possibility of deformation of the placement base 22 when the iron core 6 is compressed.
[0053] The pre-compression assembly 3 includes a mounting frame 31 and an extrusion member 32. The mounting frame 31 is fixedly mounted on the worktable 1, and the extrusion member 32 is mounted on the mounting frame 31 and slides in cooperation with it. It is driven by a second power source 33 to move vertically. The extrusion member 32 includes an outer ring extrusion unit 321 and an inner ring extrusion unit 322. The second power source 33 includes a first power unit 331 and a second power unit 332. The outer ring extrusion unit 321 moves vertically via the first power unit 331, and the inner ring extrusion unit 322 moves vertically via the second power unit 332. The two work together to press against the iron core 6.
[0054] The outer ring compression unit 321 includes a reference ring 3211, a clamping ring 3212, and a spring 3213. The reference ring 3211 is horizontally mounted on the first power unit 331, and the clamping ring 3212 is horizontally mounted below the reference ring 3211, with a guide rod at its top. The guide rod passes through the reference ring 3211 and slides vertically with it. The spring 3213 is sleeved on the guide rod, with one end contacting the clamping ring 3212 and the other end contacting the reference ring 3211. The clamping ring 3212 contacts the top of the iron core 6 away from the stator axis. The spring 3213 buffers the clamping force, reducing the possibility of damage to the iron core 6.
[0055] The inner ring extrusion unit 322 includes a mounting plate 3221 and an extrusion rod 3222. The mounting plate 3221 is mounted on the second power unit 332, and the extrusion rod 3222 is vertically mounted on the mounting plate 3221. An elastic unit, typically made of rigid polyurethane, is provided between the extrusion rod 3222 and the mounting plate 3221. When the bottom end of the extrusion rod 3222 contacts the top of the rivet strip at the riveting point of the iron core 6, the elastic unit buffers the force on the extrusion rod 3222, reducing the possibility of damage due to excessive force. The extrusion rod 3222 and the clamping ring 3212 synchronously and collaboratively extrude the iron core 6, improving the stability of the pre-compression of the iron core 6.
[0056] The inspection component 4 includes a vision camera, which is fixedly mounted on the mounting bracket 31 and installed above the workbench 1. After the iron core 6 is pre-pressed, the riveting fixture 2 moves the iron core 6 to below the vision camera. The vision camera detects the height of the pre-pressed iron core 6 by measuring the height difference of each component. If the height of the iron core 6 meets the set value, the riveting fixture 2 carries the iron core 6 to below the riveting component 5 for riveting; if the height of the iron core 6 is found to be inconsistent with the set value, the riveting fixture 2 carries the iron core 6 back to the initial position, and the operator replaces the defective iron core 6.
[0057] The riveting assembly 5 includes a servo press 51 and a limiting part 52. The servo press 51 is vertically fixed on the mounting bracket 31, and the limiting part 52 moves vertically via a third power source. The limiting part 52 includes a limiting ring 521 and a telescopic rod 522. The third power source is similar in structure to the first power source 23. The third power source drives the limiting ring 521 to move vertically. The telescopic rod 522 is fixedly installed at the bottom of the limiting ring 521, and the telescopic rod 522 has several abutment interfaces 223 circumferentially along the axis of the limiting ring 521. Several abutment interfaces 223 are provided on the side wall of the placement seat 22 along the central axis. The push rod of the telescopic cylinder is inserted into the abutment interface 223. When riveting the iron core 6, the push rod of the telescopic cylinder presses the iron core 6 against it. By limiting the iron core 6 as a whole through multiple telescopic cylinders, the possibility of deformation of the iron core 6 as a whole during riveting is reduced.
[0058] The implementation principle of a core riveting machine according to an embodiment of this application is as follows: First, the core 6 is placed in the riveting fixture 2. The riveting fixture 2 moves along the guide rail to below the pre-pressing component 3, where the core 6 is pre-pressed. After pre-pressing, the core 6 is moved to below the detection component 4, where a vision camera measures the height of the core 6 to ensure it meets the set value. If the height of the core 6 is qualified, the riveting fixture 2 moves the core 6 to the riveting component 5 for riveting; if it is not qualified, it returns to the initial position, replaces the core 6, and is re-inspected. The riveting fixture 2 moves along the guide rail through the cooperation of a threaded rod and a drive motor. The outer ring extrusion unit 321 and the inner ring extrusion unit 322 in the pre-pressing component 3 work together to ensure the stability of the pre-pressing of the core 6. The vision camera in the detection component 4 accurately measures the height of the iron core 6, while the servo press 51 and the limit part 52 in the riveting component 5 work together to accurately rivet the iron core 6 through the telescopic cylinder, ensuring the overall stability of the iron core 6 during the riveting process, reducing the risk of deformation, and improving riveting efficiency and pass rate.
[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A core riveting machine for riveting cores (6), characterized in that: It includes a workbench (1), a riveting fixture (2), a pre-compression assembly (3), a testing assembly (4), and a riveting assembly (5), wherein: The riveting fixture (2) is mounted on the workbench (1). The riveting fixture (2) slides with the workbench (1) and passes through the pre-pressing component (3), the detection component (4) and the riveting component (5) along a predetermined route via the first power source (23).
2. The iron core riveting machine according to claim 1, characterized in that: The riveting fixture (2) includes a transfer platform (21) and a placement seat (22), wherein: The transfer platform (21) is mounted on the workbench (1); The placement seat (22) is installed on the transfer platform (21), and the inner wall of the placement seat (22) is provided with an annular placement groove (221). The inner wall of the placement groove (221) is provided with a positioning groove (222) for inserting the iron core (6). A support member (24) is provided between the placement seat (22) and the worktable (1).
3. A core riveting machine according to claim 2, characterized in that: The support member (24) includes a first support column (241) and a second support column (242), wherein: The first support column (241) is installed at the bottom of the placement seat (22), and the first support column (241) passes through the transfer platform (21). The second support column (242) is mounted on the workbench (1); The bottom of the first support column (241) can contact the top of the second support column (242).
4. A core riveting machine according to claim 1, characterized in that: The pre-compression assembly (3) includes a mounting bracket (31) and an extruder (32), wherein: The mounting bracket (31) is mounted on the workbench (1); The extrusion member (32) is mounted on the mounting frame (31), and the extrusion member (32) slides in cooperation with the mounting frame (31). The extrusion member (32) moves in the vertical direction through the second power source (33).
5. A core riveting machine according to claim 4, characterized in that: The extrusion member (32) includes an outer ring extrusion unit (321) and an inner ring extrusion unit (322), and the second power source (33) includes a first power unit (331) and a second power unit (332), wherein; The outer ring extrusion unit (321) moves vertically via the first power unit (331); The inner ring extrusion unit (322) moves vertically via the second power unit (332); The inner ring extrusion unit (322) and the outer ring extrusion unit (321) work together to press against the iron core (6).
6. A core riveting machine according to claim 1, characterized in that: The detection component (4) includes a vision camera, which is mounted above the worktable (1).
7. A core riveting machine according to claim 2, characterized in that: The riveting assembly (5) includes a servo press (51) and a limiting part (52), wherein: The servo press (51) is mounted on the worktable (1); The limiting part (52) moves in the vertical direction via a third power source.
8. A core riveting machine according to claim 7, characterized in that: The limiting part (52) includes a limiting ring (521) and a telescopic rod (522), wherein: The telescopic rod (522) is installed at the bottom of the limiting ring (521), and the telescopic rod (522) is distributed circumferentially along the central axis of the limiting ring (521); The side wall of the placement seat (22) has a plurality of abutment interfaces (223) distributed circumferentially along the central axis of the placement seat (22). The telescopic rod (522) is inserted into the abutment interface (223), and the push rod end of the telescopic rod (522) can contact the iron core (6).
9. A core riveting machine according to claim 5, characterized in that: The outer ring compression unit (321) includes a reference ring (3211), a clamping ring (3212), and a spring (3213), wherein: The reference ring (3211) is horizontally mounted on the first power unit (331); The clamping ring (3212) is horizontally installed below the reference ring (3211), and the top of the clamping ring (3212) is provided with a guide rod, which passes through the reference ring (3211), and the guide rod and the reference ring (3211) slide in the vertical direction. The spring (3213) is sleeved on the guide rod. One end of the spring (3213) is in contact with the clamping ring (3212), and the other end of the spring (3213) is in contact with the reference ring (3211).
10. A core riveting machine according to claim 5, characterized in that: The inner ring extrusion unit (322) includes a mounting plate (3221) and an extrusion rod (3222), wherein: The mounting plate (3221) is mounted on the second power unit (332); The extrusion rod (3222) is vertically mounted on the mounting plate (3221), and an elastic unit is provided between the extrusion rod (3222) and the mounting plate (3221).