Stator press fitting device

Abstract

The utility model discloses a stator press-fitting device which comprises a main mounting plate and an upper top plate supported and fixed through a supporting rod, a lower die holder for supporting a stator and a core rod is arranged in the middle of the main mounting plate, and pressure cylinders fixed through supporting rib plates are symmetrically arranged on the left side and the right side of the lower die holder. A tool apron is fixed to a piston rod of the pressure cylinder, seam allowance tools which are vertically arranged side by side are arranged at the front end of the tool apron, a gas-liquid pressure cylinder is fixedly arranged on the upper top plate, and the front section of the piston rod of the gas-liquid pressure cylinder is fixedly connected with an upper die ring fixed to the movable plate. The movable plate is connected with the supporting rod through a flange type linear bearing and slides up and down along the supporting rod, and the upper die ring is arranged to be opposite to the lower die base in position after moving downwards along with the movable plate. And the gas tank and the hydraulic station are respectively connected with the pressure cylinder and the gas-liquid pressure cylinder through pipelines. The device not only can realize quick press fitting of stators and improve the efficiency, but also can adapt to installation of stators of different sizes.

Description

Technical Field

[0001] The utility model relates to the field of stator assembly, in particular to a stator press-fitting device. Background Art

[0002] Stator press-fitting is a crucial step in motor manufacturing. It involves precisely installing the stator core or windings into the motor housing, a process that directly impacts the motor's performance, efficiency, and lifespan. Stator press-fitting is crucial for ensuring precise assembly and properly controlling the applied force and displacement to avoid damage to the stator or housing. Furthermore, it must be performed in a clean environment to prevent the introduction of impurities that could affect motor operation. Protecting the stator winding's insulation to prevent insulation damage during the press-fit process is also crucial. Furthermore, the use of automated and intelligent press-fitting equipment, such as servo presses, can not only improve production efficiency but also enhance product quality.

[0003] To achieve the press-fitting of the stator, a utility model patent with publication number CN208304329U in the prior art discloses a stator press-fitting tool. This device includes a press-fitting frame, which is provided with a placement table for placing the stator ring, a clamping mechanism provided on the placement table for clamping the stator body, and a press-fitting mechanism provided above the clamping mechanism for pushing the stator body into the stator ring. The press-fitting mechanism includes a press-fitting cylinder and a press-fitting head provided on the push rod of the press-fitting cylinder. The stator body includes two semicircular coils and a rigid skeleton for the coils to surround. The skeleton protrudes from the outer periphery of the two coils and exposes two first press-fitting end faces. The skeleton exposes two second press-fitting end faces between the two semicircular coils. The press-fitting head is protruded with a first press-fitting block for abutting against the two first press-fitting end faces and a second press-fitting block for abutting against the two second press-fitting end faces. A stator press-fitting tool is provided that is labor-saving for operators to assemble and has high assembly efficiency.

[0004] However, the structures of the first press-fitting block and the second press-fitting block have poor adaptability to the stator and cannot meet the press-fitting requirements of stators with different diameters. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the purpose of the utility model is to disclose a stator press-fitting device, which can not only realize the rapid press-fitting of the stator and improve the efficiency, but also can adapt to the installation of stators of different sizes.

[0006] To achieve the above-mentioned effect, the present application discloses a stator pressing device, comprising a main mounting plate and an upper top plate supported and fixed by a support rod, a lower die seat supporting the stator and core rod is provided in the middle of the main mounting plate, and a boosting cylinder fixed by a supporting rib is symmetrically provided on the left and right sides of the lower die seat, a knife seat is fixed on the piston rod of the boosting cylinder, and a stop knife is provided at the front end of the knife seat and arranged in parallel up and down, a gas-liquid boosting cylinder is fixed on the upper top plate, and the front section of the piston rod of the gas-liquid boosting cylinder is fixedly connected to the upper die ring on the fixed and movable plate, the movable plate is connected to the support rod through a flange linear bearing and slides up and down along the support rod, and the upper die ring is arranged to be opposite to the position of the lower die seat when it moves downward with the movable plate; it also includes a gas tank and a hydraulic station respectively connected to the boosting cylinder and the gas-liquid boosting cylinder through pipelines.

[0007] Furthermore, a first support rod is provided on the upper top plate, a first position sensor, a second position sensor and a third position sensor are provided on the first support rod, a second support rod passing through the upper top plate is provided on the movable plate, and a sensing head is provided on the top of the second support rod.

[0008] Furthermore, a protective cover is provided on the outer side of the main installation plate, a control panel is provided on the protective cover, and control buttons are also provided on the main installation plate.

[0009] Furthermore, the control panel is electrically connected to the first position sensor, the second position sensor, the third position sensor, the gas tank and the hydraulic station.

[0010] Furthermore, the main mounting plate is arranged at the upper end of the cabinet.

[0011] Furthermore, a slide rail is provided in the middle of the main mounting plate, and a slide rail seat is fixedly provided at the bottom of the knife seat to cooperate with the slide rail.

[0012] Furthermore, safety gratings are provided on the support rods on both sides of the protective cover.

[0013] Furthermore, the upper die ring is connected to the piston rod of the gas-liquid booster cylinder through a floating joint.

[0014] The beneficial effects of the utility model include:

[0015] The press-fitting structure disclosed in the present application fixes the lower die by controlling the stop blades in cooperation with the lower die base through booster cylinders symmetrically arranged on both sides of the lower die base, and press-fits the stator by controlling the up and down movement of the upper die ring through a gas-liquid booster cylinder. In addition, the position of the upper gas-liquid booster cylinder is controlled by the use of a sensor, thereby realizing rapid press-fitting of the stator, improving efficiency, and being able to adapt to the installation of stators of different sizes.

[0016] In addition, the automation of the stator press-fitting operation and the safety of the operator during use are ensured by the setting of various sensors and safety gratings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a schematic diagram of the stator press-fitting device of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the upper part of the main installation plate of the utility model.

[0021] Figure 4 It is an enlarged schematic diagram of the structure of the upper part of the main installation plate of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the booster cylinder and the lower die base of the utility model.

[0023] Figure 6 It is a side view schematic diagram of the stator press-fitting device of the present invention.

[0024] Including: main mounting plate-1, support rod-2, upper top plate-3, stator-4, core rod-5, lower die base-6, support rib-7, booster cylinder-8, knife holder-9, stop knife-10, gas-liquid booster cylinder-11, movable plate-12, upper die ring-13, flanged linear bearing-14, gas tank-15, hydraulic station-16, first support rod-17, first position sensor-18, second position sensor-19, third position sensor-20, second support rod-21, sensor head-22, control panel-23, control button-24, cabinet-25, slide rail-26, slide rail base-27, safety light grid-28, floating joint-29, protective cover-30. DETAILED DESCRIPTION

[0025] The specific implementation methods of the present invention are further described in detail below in conjunction with the accompanying drawings. However, the following embodiments only list preferred embodiments, which only serve to explain and help understand the present invention and cannot be understood as limiting the present invention.

[0026] refer to Figure 1-6 The upper and lower mold bases are connected to each other through the support rod 2, and the upper and lower mold bases are connected to each other through the support rod 2. The lower mold base 6 is provided with a lower mold base 6 supporting the stator 4 and the core rod 5 in the middle of the main mounting plate. The left and right sides of the lower mold base 6 are symmetrically provided with a boosting cylinder 8 fixed by a supporting rib 7. A knife seat 9 is fixed on the piston rod of the boosting cylinder. A stop knife 10 is provided at the front end of the knife seat. A gas-liquid boosting cylinder 11 is fixed on the upper plate 3. The front section of the piston rod of the gas-liquid boosting cylinder is fixedly connected to the upper mold ring 13 on the fixed and movable plate 12. The movable plate 12 is connected to the support rod 2 through a flange linear bearing 14 and slides up and down along the support rod. The upper mold ring is arranged to be opposite to the position of the lower mold base 6 when it moves downward with the movable plate 12; it also includes a gas tank 15 and a hydraulic station 16, which are respectively connected to the boosting cylinder 8 and the gas-liquid boosting cylinder 11 through pipelines.

[0027] During use, the device's basic structure consists of a main mounting plate 1 and an upper plate 3, with the upper plate supported and fixed by support rods 2. A lower die holder 6 is located in the center of the main mounting plate, supporting the stator 4 and core rod 5. Boosting cylinders 8 are symmetrically mounted on either side of the lower die holder, secured by supporting ribs 7. A tool holder 9 is fixed to the piston rod, with a stopper 10 mounted at the front end for press-fitting the stator.

[0028] A pneumatic-hydraulic booster cylinder 11 is fixed to the upper top plate 3. The front end of its piston rod is connected to the upper die ring 13 on the movable plate 12. The movable plate is connected to the support rod 2 via a flanged linear bearing 14 and can slide up and down along the support rod to press-fit the stator. The pneumatic-hydraulic booster cylinder is powered by a gas tank 15 and a hydraulic station 16, which are connected to the booster cylinder via pipelines.

[0029] During operation, the pneumatic-hydraulic booster cylinder 11, powered by the gas tank 15 and hydraulic station 16, pushes the upper die ring 13 downward, aligning it with the lower die base 6, to press-fit the stator. A floating joint 29 connects the upper die ring 13 and the pneumatic-hydraulic booster cylinder piston rod, allowing a degree of float to accommodate stators of varying sizes. After press-fitting is complete, the pneumatic-hydraulic booster cylinder retracts, and the upper die ring ascends, completing one cycle. The entire device is designed for precision, repeatability, and operational safety, making it suitable for automated stator press-fitting in high-volume production environments.

[0030] As a preferred technical solution, a first support rod 17 is provided on the upper top plate 3, a first position sensor 18, a second position sensor 19 and a third position sensor 20 are provided on the first support rod, and a second support rod 21 passing through the upper top plate 3 is provided on the movable plate 12, and a sensing head 22 is provided on the top of the second support rod.

[0031] To ensure precise control of the press-fitting process, a first support rod 17 is provided on the upper plate 3, on which are mounted a first position sensor 18, a second position sensor 19, and a third position sensor 20 for monitoring and controlling the precise position of the device. A second support rod 21 is also mounted on the movable plate 12. When the sensing head 22 at its top reaches the first position sensor at the top, it indicates that the gas-liquid booster cylinder has reached its retracted position. When the movable plate descends and the sensing head reaches the second position sensor, stator press-fitting has begun. The downward pressure can be controlled to slow down until the sensing head reaches the third position sensor, indicating that press-fitting is complete and the gas-liquid booster cylinder stops operating.

[0032] Preferably, a protective cover 30 is provided on the outside of the main mounting plate 1, on which a control panel 23 is mounted. Control buttons 24 are also provided on the main mounting plate 1. Operational safety is ensured by the protective cover 30 provided on the outside of the main mounting plate. The control panel 23 and control buttons 24 are provided on the protective cover for operating and controlling the entire device. The control panel is electrically connected to the position sensor, the gas-liquid booster cylinder, and the booster cylinder's energy supply system, enabling automated control.

[0033] Furthermore, the control panel is electrically connected to the first position sensor 18, the second position sensor 19, and the third position sensor 20, as well as the gas tank 15 and the hydraulic station 16. The main mounting plate 1 is mounted on the upper end of the cabinet 25. A slide rail 26 is positioned in the middle of the main mounting plate 1, and a slide rail seat 27 is fixedly mounted on the bottom of the tool holder 9 to mate with the slide rail. Safety gratings 28 are installed on the support rods on both sides of the protective cover. The upper die ring 13 is connected to the piston rod of the gas-liquid booster cylinder 11 via a floating joint 29.

[0034] The embodiments described above are merely descriptions of preferred implementation methods of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A stator press-fitting device, characterized in that: It comprises a main mounting plate (1) and an upper top plate (3) supported and fixed by a support rod (2), a lower die base (6) supporting a stator (4) and a core rod (5) is provided in the middle of the main mounting plate, a booster cylinder (8) fixed by a supporting rib plate (7) is symmetrically provided on the left and right sides of the lower die base (6), a knife seat (9) is fixed on the piston rod of the booster cylinder, and a stop knife (10) arranged in parallel up and down is provided at the front end of the knife seat, and a gas-liquid booster cylinder (11) is fixed on the upper top plate (3). The front section of the piston rod of the gas-liquid booster cylinder is fixedly connected to the upper die ring (13) on the fixed and movable plate (12); the movable plate (12) is connected to the support rod (2) through a flange linear bearing (14) and slides up and down along the support rod; the upper die ring is arranged to be opposite to the position of the lower die base (6) after moving downward with the movable plate (12); and the gas tank (15) and the hydraulic station (16) are respectively connected to the booster cylinder (8) and the gas-liquid booster cylinder (11) through pipelines.

2. A stator press-fitting device according to claim 1, characterized in that: A first support rod (17) is provided on the upper top plate (3), a first position sensor (18), a second position sensor (19) and a third position sensor (20) are provided on the first support rod, and a second support rod (21) passing through the upper top plate (3) is provided on the movable plate (12), and a sensing head (22) is provided at the top end of the second support rod.

3. The stator press-fitting device according to claim 2, characterized in that: It also includes a protective cover (30) arranged on the outer side of the main installation plate (1), a control panel (23) is arranged on the protective cover, and a control button (24) is also arranged on the main installation plate (1).

4. A stator press-fitting device according to claim 3, characterized in that: The control panel is electrically connected to the first position sensor (18), the second position sensor (19), the third position sensor (20), the gas tank (15), and the hydraulic station (16).

5. The stator press-fitting device according to claim 1, characterized in that: The main mounting plate (1) is arranged at the upper end of the cabinet (25).

6. The stator press-fitting device according to claim 1, characterized in that: A slide rail (26) is provided in the middle of the main mounting plate (1), and a slide rail seat (27) is fixedly provided at the bottom of the knife seat (9) to cooperate with the slide rail.

7. The stator press-fitting device according to claim 3, characterized in that: Safety gratings (28) are provided on the support rods on both sides of the protective cover.

8. The stator press-fitting device according to claim 1, characterized in that: The upper die ring (13) is connected to the piston rod of the gas-liquid booster cylinder (11) via a floating joint (29).

Images