Motor core riveting mechanism

Abstract

The utility model relates to a motor iron core riveting mechanism belongs to motor iron core technical field, including work table, the top of work table places the upper pressing plate, the top surface fixed mounting of work table has the lower mould base plate, the top surface fixed mounting of lower mould base plate has the lower mould, the bottom of upper pressing plate places the upper mould hanger board, the bottom surface fixed mounting of upper mould hanger board has the upper mould, the upper mould and lower mould between place stator core, be equipped with the positioning assembly that the stator core is positioned on work table. The motor iron core riveting mechanism, through the effect of positioning core axle, the stator core is guided right, and the stator core is positioned conveniently, avoids the stator core as far as possible to be pressed and broken, improves product quality and pass rate, through the effect of spring, supports the upper mould, improves the stability of upper mould, at the same time, through the effect of core expansion, the stator core is accurately aligned, guarantees the inner circle size accuracy of iron core, prevents the deformation of iron core.

Description

Technical Field

[0001] This utility model relates to the field of motor core technology, specifically a motor core riveting mechanism. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. It is divided into electric motors and generators. The stator poles of an electromagnetic DC motor are composed of an iron core and an excitation winding. According to its excitation method, it can be further divided into series-wound DC motors, shunt-wound DC motors, separately excited DC motors, and compound-wound DC motors.

[0003] During the stamping process of the motor stator core, the self-locking core coming out of the punch press is fed into the hydraulic press via a conveyor belt and positioning feeding device for riveting, so that the core laminations are tightly fastened and the stacking height is controlled. During this process, the automatic feeding action sometimes causes the target positioning to deviate, resulting in the upper die assembly pressing down and the upper die mandrel pressing against the edge of the core hole due to the large deviation in the core position, damaging the core and causing the product to be scrapped. Therefore, a motor core riveting mechanism is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a motor core riveting mechanism that has the advantages of preventing the core from being crushed and improving product quality. It solves the problem that during the production of existing stator cores, the automatic feeding action sometimes causes target positioning deviation, which leads to the upper mold core shaft pressing against the edge of the core hole due to the large deviation of the core position when the upper mold assembly presses down, thus crushing the core and causing product scrap.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A motor core riveting mechanism includes a worktable, an upper pressure plate placed on top of the worktable, a lower mold base plate fixedly installed on the top surface of the worktable, a lower mold fixedly installed on the top surface of the lower mold base plate, an upper mold hanging plate placed at the bottom of the upper pressure plate, an upper mold fixedly installed on the bottom surface of the upper mold hanging plate, a stator core placed between the upper mold and the lower mold, and a positioning component for positioning the stator core provided on the worktable.

[0007] The positioning assembly includes two positioning bars, both of which are fixedly connected to the top surface of the lower mold. The stator core is located between the two positioning bars. An upper pressure plate is placed on the top of the upper mold hanging plate. A hydraulic push rod is fixedly installed on the bottom surface of the upper pressure plate. An expansion core is fixedly installed on the output shaft of the hydraulic push rod, with one end penetrating the upper mold hanging plate and extending into the stator core. A cylinder is placed at the bottom of the worktable. A positioning mandrel is fixedly connected to the output shaft of the cylinder, with one end penetrating the worktable and extending into the stator core.

[0008] The lower mold base plate is provided with a support component for supporting the upper mold hanging plate.

[0009] Furthermore, the lower mold base plate and the opposite side of the lower mold are each provided with a first through hole, and the expansion core and the positioning mandrel extend into the interior of the first through hole at the top and bottom respectively and are fitted with it with a clearance.

[0010] Furthermore, both positioning bars are in contact with the stator core, and a connecting hole is provided on the bottom surface of the worktable, through which the positioning mandrel passes.

[0011] Furthermore, the support assembly includes two spring mandrels, both of which are fixedly connected to the top surface of the lower mold base plate. The bottom surface of the lower mold has two mounting holes, and the top surface of the upper mold hanging plate has two clearance holes. The spring mandrels pass through the mounting holes and clearance holes in sequence and extend to the top of the upper mold hanging plate. Springs are fitted on the outer peripheral walls of both spring mandrels, and the springs extend into the interior of the mounting holes. The springs are located between the upper mold hanging plate and the lower mold base plate.

[0012] Furthermore, the two positioning bars are located between the two spring spindles, and the upper mold hanging plate and the lower mold base plate are both fixedly connected to the springs.

[0013] Furthermore, the two spring spindles are respectively fitted with two clearance holes, and the mounting holes and clearance holes are distributed accordingly.

[0014] Compared with the prior art, this utility model provides a motor core riveting mechanism, which has the following beneficial effects:

[0015] This motor core riveting mechanism guides the stator core through the action of the positioning mandrel, facilitating the positioning of the stator core and minimizing damage to the core, thereby improving product quality and yield. The upper mold is supported by springs, enhancing its stability. Simultaneously, the expansion mandrel ensures precise alignment of the stator core, guaranteeing the accuracy of the core's inner diameter and preventing core deformation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram of A in the middle;

[0018] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure of B in the middle.

[0019] In the diagram: 1. Workbench, 2. Lower mold base plate, 3. Lower mold, 4. Positioning strip, 5. Expansion core, 6. Stator core, 7. Spring spindle, 8. Upper mold hanging plate, 9. Upper pressure plate, 10. Hydraulic push rod, 11. Upper mold, 12. Positioning spindle, 13. Cylinder, 14. Clearance hole, 15. Spring, 16. Mounting hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3 A motor core riveting mechanism in this embodiment includes a workbench 1, an upper pressure plate 9 placed on the top of the workbench 1, a lower mold base plate 2 fixedly installed on the top surface of the workbench 1, a lower mold 3 fixedly installed on the top surface of the lower mold base plate 2, an upper mold hanging plate 8 placed at the bottom of the upper pressure plate 9, an upper mold 11 fixedly installed on the bottom surface of the upper mold hanging plate 8, a stator core 6 placed between the upper mold 11 and the lower mold 3, and a positioning component for positioning the stator core 6 on the workbench 1.

[0022] The positioning assembly includes two positioning bars 4, both of which are fixedly connected to the top surface of the lower mold 3. The stator core 6 is located between the two positioning bars 4. An upper pressure plate 9 is placed on the top of the upper mold hanging plate 8. A hydraulic push rod 10 is fixedly installed on the bottom surface of the upper pressure plate 9. An expansion core 5 is fixedly installed on the output shaft of the hydraulic push rod 10, with one end penetrating the upper mold hanging plate 8 and extending into the stator core 6. A cylinder 13 is placed at the bottom of the worktable 1. A positioning mandrel 12 is fixedly connected to the output shaft of the cylinder 13, with one end penetrating the worktable 1 and extending into the stator core 6.

[0023] The lower mold base plate 2 and the lower mold 3 each have a first through hole on their opposite sides. The expansion core 5 and the positioning spindle 12 extend into the first through hole at the top and bottom respectively and are fitted with it with a clearance. The two positioning strips 4 are attached to the stator core 6. The bottom surface of the worktable 1 has a connecting hole, and the positioning spindle 12 passes through the connecting hole.

[0024] Specifically, the stator core 6 is placed on the lower mold 3 and positioned between two positioning bars 4. The positioning bars 4 restrict the stator core 6. The cylinder 13 is activated, and its output end drives the positioning mandrel 12 to move upward, inserting it into the interior of the stator core 6 to restrict the stator core 6. After positioning, the positioning mandrel 12 is reset. The hydraulic push rod 10 is activated, and its output end drives the upper mold hanging plate 8 to move downward, causing the upper mold 11 to move downward. Through the cooperation between the upper mold 11 and the lower mold 3, the stator core 6 is riveted. The expansion core 5 is inserted into the interior of the stator core 6, ensuring that the stator core 6 is precisely aligned during riveting, thus guaranteeing the accuracy of the inner diameter of the stator core 6.

[0025] It should be noted that cylinder 13 and hydraulic push rod 10 are conventional devices known to the public in the prior art, and their specific structures and working principles will not be described in detail in this article.

[0026] Please see Figures 1 to 3 In this embodiment, the lower mold base plate 2 is provided with a support assembly for supporting the upper mold hanging plate 8. The support assembly includes two spring spindles 7, both of which are fixedly connected to the top surface of the lower mold base plate 2. The bottom surface of the lower mold 3 is provided with two mounting holes 16, and the top surface of the upper mold hanging plate 8 is provided with two clearance holes 14. The spring spindles 7 pass through the mounting holes 16 and clearance holes 14 in sequence and extend to the top of the upper mold hanging plate 8. The outer peripheral walls of the two spring spindles 7 are fitted with springs 15, which extend into the interior of the mounting holes 16 and are located between the upper mold hanging plate 8 and the lower mold base plate 2.

[0027] Among them, the two positioning strips 4 are located between the two spring spindles 7, the upper mold hanging plate 8 and the lower mold base plate 2 are both fixedly connected to the spring 15, the two spring spindles 7 are respectively clearance-fitted with the two relief holes 14, and the mounting holes 16 and relief holes 14 are correspondingly distributed.

[0028] Specifically, when the upper mold 11 moves downward, it compresses the spring 15, which supports the upper mold 11 and improves its stability. The upper mold hanging plate 8 is supported by the clearance fit between the spring spindle 7 and the relief hole 14, thus improving its stability.

[0029] The working principle of the above embodiments is as follows:

[0030] The stator core 6 is placed on the lower mold 3 and positioned between two positioning bars 4. The positioning bars 4 restrict the stator core 6. The cylinder 13 is activated, and its output drives the positioning mandrel 12 upwards, inserting it into the stator core 6 to further restrict its position. After positioning, the positioning mandrel 12 resets. The hydraulic push rod 10 is then activated, and its output drives the upper mold hanging plate 8 downwards, causing the upper mold 11 to move downwards. This movement is achieved through the interaction between the upper mold 11 and the lower mold 3. The fit between the molds 3 performs a riveting process on the stator core 6. The expansion core 5 is inserted into the interior of the stator core 6, so that the stator core 6 is precisely aligned during the riveting process, ensuring the accuracy of the inner circle dimension of the stator core 6. When the upper mold 11 moves downward, it compresses the spring 15, and the spring 15 supports the upper mold 11, improving the stability of the upper mold 11. The clearance fit between the spring spindle 7 and the clearance hole 14 supports the upper mold hanging plate 8, improving the stability of the upper mold hanging plate 8.

[0031] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor core riveting mechanism, comprising a worktable (1), characterized in that: The workbench (1) is topped with an upper pressure plate (9), the workbench (1) is fixedly mounted with a lower mold base plate (2), the lower mold (3) is fixedly mounted on the top surface of the lower mold base plate (2), the upper mold hanging plate (8) is placed at the bottom of the upper pressure plate (9), the upper mold (11) is fixedly mounted on the bottom surface of the upper mold hanging plate (8), the stator core (6) is placed between the upper mold (11) and the lower mold (3), and the workbench (1) is provided with a positioning component for positioning the stator core (6); The positioning assembly includes two positioning bars (4), both of which are fixedly connected to the top surface of the lower mold (3). The stator core (6) is located between the two positioning bars (4). An upper pressure plate (9) is placed on the top of the upper mold hanging plate (8). A hydraulic push rod (10) is fixedly installed on the bottom surface of the upper pressure plate (9). An expansion core (5) is fixedly installed on the output shaft of the hydraulic push rod (10) with one end penetrating the upper mold hanging plate (8) and extending into the stator core (6). A cylinder (13) is placed at the bottom of the workbench (1). A positioning mandrel (12) is fixedly connected to the output shaft of the cylinder (13) with one end penetrating the workbench (1) and extending into the stator core (6). The lower mold base plate (2) is provided with a support component for supporting the upper mold hanging plate (8).

2. The motor core riveting mechanism according to claim 1, characterized in that: The lower mold base plate (2) and the lower mold (3) are provided with a first through hole on one side of their opposite sides. The expansion core (5) and the positioning mandrel (12) extend into the interior of the first through hole at the top and bottom respectively and are fitted with it with a clearance.

3. The motor core riveting mechanism according to claim 1, characterized in that: Both positioning bars (4) are in contact with the stator core (6), and the bottom surface of the worktable (1) is provided with a connecting hole, through which the positioning mandrel (12) passes.

4. The motor core riveting mechanism according to claim 1, characterized in that: The support assembly includes two spring spindles (7), both of which are fixedly connected to the top surface of the lower mold base plate (2). The bottom surface of the lower mold (3) has two mounting holes (16), and the top surface of the upper mold hanging plate (8) has two clearance holes (14). The spring spindles (7) pass through the mounting holes (16) and clearance holes (14) in sequence and extend to the top of the upper mold hanging plate (8). The outer peripheral walls of the two spring spindles (7) are fitted with springs (15), which extend into the interior of the mounting holes (16) and are located between the upper mold hanging plate (8) and the lower mold base plate (2).

5. The motor core riveting mechanism according to claim 4, characterized in that: The two positioning bars (4) are located between the two spring spindles (7), and the upper mold hanging plate (8) and the lower mold bottom plate (2) are both fixedly connected to the spring (15).

6. The motor core riveting mechanism according to claim 4, characterized in that: The two spring spindles (7) are respectively fitted with two clearance holes (14), and the mounting holes (16) and clearance holes (14) are distributed accordingly.

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