Stator paper insertion apparatus

Abstract

A stator paper embedding equipment belongs to the technical field of motor production and manufacturing, and comprises an equipment support, a clamping table with an upward operation surface arranged at the lower part of the equipment support, and a pressing mechanism with a downward operation surface arranged at the upper part of the equipment support; a paper conveying and embedding mechanism fixed on the equipment support is arranged between the clamping table and the pressing mechanism; the problems of complex system, poor adaptability and insufficient flexibility in the prior art are solved, a modular design with a more simple structure is provided, and the new stator paper embedding equipment has higher reliability, stronger adaptability and is easier to maintain.

Description

Technical Field

[0001] This application belongs to the field of motor manufacturing technology, and specifically relates to a stator paper embedding equipment for automatically embedding insulating paper into the stator core slots of a motor. Background Technology

[0002] During the motor manufacturing process, insulating paper, such as composite materials like DMD and NMN, needs to be embedded in the stator core slots to provide insulation protection between the coils and the core, prevent short circuits, and fix the coil positions. This is a crucial process that affects the motor's performance and reliability.

[0003] Currently, automated stator paper inserting equipment has gradually replaced manual operation. Patent CN119891657A discloses a stator paper inserting device that combines negative pressure adsorption with mechanical bending: first, the insulating paper is bent and adsorbed onto a support of a specific shape, then pushed into the stator slot as a whole, and finally the negative pressure is released to detach the insulating paper.

[0004] While this solution achieves a certain degree of automation, it still has some significant drawbacks: it relies on a sophisticated and complex pneumatic system to generate and release negative pressure. This not only increases the manufacturing cost of the equipment but also raises the difficulty of subsequent maintenance and the failure rate. The effectiveness of negative pressure adsorption is heavily dependent on the material and surface characteristics of the insulating paper. For insulating paper with a dense, smooth, or poorly permeable surface, insufficient adsorption force may lead to displacement, detachment, or wrinkling of the insulating paper during conveying or embedding, resulting in embedding failure. Finally, the embedding action of the equipment is strongly coupled with the specific shape of the support. When it is necessary to adapt to stators of different slot shapes or sizes, not only is it necessary to replace the support, but it may also require complex adjustments to the entire pneumatic circuit and mechanical structure, resulting in long changeover times and difficulty in meeting the needs of flexible production; furthermore, the switching of positive and negative pressure throughout the equipment requires precise control. If the negative pressure is released too early, the insulating paper may rebound or shift before the support is removed; if it is released too late, it may hinder the smooth removal of the support. This uncertainty in control brings risks to the consistency of product quality. Utility Model Content

[0005] The purpose of this invention is to solve the problems of system complexity, poor adaptability and insufficient flexibility in the existing technology, and to provide a new type of stator paper inserting equipment with a simpler modular design, higher reliability, stronger adaptability and easier maintenance.

[0006] To achieve the above technical objectives, the following technical solution is provided: a stator paper embedding equipment, including an equipment support, a clamping platform with an upward operating surface at the lower part of the equipment support, and a pressing mechanism with a downward operating surface at the upper part; a paper conveying embedding mechanism fixed on the equipment support is provided between the clamping platform and the pressing mechanism. The paper feeding and embedding mechanism includes a guide rail assembly fixed on the equipment bracket, a paper feeding base on the guide rail assembly, a horizontal guide rail assembly fixed on the paper feeding base, and a jaw mechanism that can move in opposite directions fixed on the horizontal guide rail assembly. The jaw mechanism can hold the folding paper embedding component. Folded insulating paper is placed in the insert unit of the origami embedding assembly, and then the origami embedding assembly is placed in the jaw mechanism; the pressing mechanism feeds the insulating paper in the insert unit into the stator fixed on the clamping table.

[0007] In one feasible embodiment, the paper-inserting unit includes a substrate, a paper-inserting tube is provided on one side of the substrate, the paper-inserting tube has a trapezoidal groove that runs vertically through it and holds insulating paper; a connecting member is provided on the other side, the connecting member has a protrusion as a male end and a recess as a female end, the protrusion and the recess are connected by a connecting shaft, and the paper-inserting units can be connected end to end to form a closed ring that cooperates with the inner ring of the stator.

[0008] In one feasible embodiment, the guide rail assembly includes a main transmission rail containing a motor located at one end and a rotating lead screw connected to the motor located inside the main transmission rail. It also has auxiliary guide rails, two of which are respectively set on both sides of the main transport rail; the paper conveying base is connected to the main transport rail through the main slider and to the auxiliary guide rail through the auxiliary slider.

[0009] In one feasible embodiment, the press-fitting mechanism includes a hydraulic cylinder with at least four evenly arranged guide rods around its perimeter, and a press-fitting base at the ends of the hydraulic cylinder and the guide rods. The pressing base is provided with several sliders arranged in two rows, and each row of sliders is provided with a guide rail; a pressing component base plate is fixed on a pair of guide rails, and the pressing component base plate is connected to the first cylinder provided on the pressing base; two pressing heads are provided side by side on the pressing component base plate, and one of the pressing heads is provided with a miniature cylinder with several ejector pins, and the miniature cylinder cooperates with the paper insert tube.

[0010] In one feasible embodiment, the clamping platform includes a support plate with a pair of second guide rails. Each second guide rail has multiple second sliders, and each second slider has a clamping base. The clamping base is connected to the support plate via a second cylinder, and the position of the clamping base is adjusted by the second cylinder. The clamping base has at least two limiting seats, and the stator to be fitted with insulating paper is placed inside the limiting seats.

[0011] In one feasible embodiment, a detection mechanism is provided on the clamping platform. The detection mechanism has two photoelectric rods, which are located near and parallel to the auxiliary guide rail. At least two photoelectric switches, one for high position and one for low position, are provided on the photoelectric rods.

[0012] Compared with the prior art, the present invention has the following advantages: This invention completely eliminates the need for a complex negative pressure pneumatic system, employing a purely mechanical gripper and pin-pressing method. The modular paper-embedding assembly serves as the carrier and forming mold for the insulating paper, featuring a simple structure and reliable operation, significantly reducing equipment failure rates and maintenance costs. Furthermore, the shape of the paper-embedding tube can be designed into different groove shapes to quickly adapt to stator slots of different specifications; the paper-embedding units can be connected in series to form a ring, perfectly matching the stator inner ring for rapid positioning and batch paper embedding. Both the clamping table and the pressing mechanism are adjustable, easily adapting to stators of different outer diameters and heights. This modular and adjustable design gives the equipment excellent flexible production capabilities.

[0013] The insulating paper is pre-folded into the required shape within the insert unit and precisely and stably pushed out by the ejector pin, effectively preventing deformation, displacement, or wrinkles during transport and insertion. The mechanical ejection force is far greater than the negative pressure adsorption force, ensuring that the insulating paper is fully in place, resulting in better adhesion and high product quality consistency.

[0014] The equipment can be set up with multiple workstations and connected to an automatic conveyor line to achieve continuous and automated production, which significantly improves production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 This is an enlarged schematic diagram of the press-fit base plate in this embodiment; Figure 3 This is a schematic diagram of the paper-insertion unit in this embodiment; 1. Equipment support frame; 2. Clamping platform; 3. Pressing mechanism; 4. Paper feeding and embedding mechanism; 5. Detection mechanism. 21 Support plate, 22 Second guide rail, 23 Clamping base, 24 Second cylinder, 25 Limiting seat 31 Hydraulic cylinder component, 32 Guide rod, 33 Press-fit base, 34 Slider, 35 Press-fit base plate, 36 First cylinder, 37 Miniature cylinder, 38 Guide rail 41 Guide rail assembly, 42 Paper conveying base, 43 Horizontal guide rail assembly, 44 Claw mechanism, 45 Folding paper embedding assembly, 51 Photoelectric rod 410 Main transmission rail, 411 Auxiliary guide rail, 450 Paper inserting unit, 4500 Base plate, 4501 Paper inserting tube, 4502 Trapezoidal groove, 4503 Protrusion, 4504 Recess. Detailed Implementation

[0016] like Figures 1 to 3The embodiment shown includes a stator paper embedding device, comprising a device support 1, a clamping platform 2 with an upward operating surface at the lower part of the device support 1 for positioning and fixing the stator to be processed, and a pressing mechanism 3 with a downward operating surface at the upper part for performing a pressing action. A paper feeding embedding mechanism 4 fixed on the device support 1 is provided between the clamping platform 2 and the pressing mechanism 3.

[0017] In this embodiment, the clamping table 2 includes a support plate 21, on which a pair of second guide rails 22 are provided. Each second guide rail 22 is provided with four second sliders, and a clamping base 23 is provided on each second slider. The clamping base 23 is connected to the support plate 21 via a second cylinder 24, and the position of the clamping base 23 is adjusted by the second cylinder 24. Two limiting seats 25 are provided on the clamping base 23, and a stator for which insulating paper is to be placed is placed is placed inside the limiting seats 25. By controlling the second cylinder 24, the clamping base 23 can be driven to move precisely along the second guide rails 22, thereby realizing the switching of work positions.

[0018] The two ends of the second guide rail 22 are respectively provided with impact buffers, including a blocking plate provided on the support plate 21 and a spring provided on the blocking plate. The spring is aligned with the clamping base 23 to prevent the second cylinder 24 from making rigid contact with the blocking plate when it moves rapidly.

[0019] In another embodiment, a detection mechanism 5 is provided on the clamping platform 2. The detection mechanism 5 has two photoelectric rods 51, which are located near and parallel to the auxiliary guide rail 411. Two photoelectric switches, one for high position and one for low position, are provided on the photoelectric rods 51. These are used to detect the upper and lower limit positions of the paper conveying base 42 and whether the folding and embedding assembly 45 is in place, thereby realizing closed-loop control and safety interlocking during operation.

[0020] The paper feeding and embedding mechanism 4 includes a guide rail assembly 41 fixed on the equipment bracket 1, a paper feeding base 42 provided on the guide rail assembly 41, a horizontal guide rail assembly 43 fixed on the paper feeding base 42, and a jaw mechanism 44 that can move in opposite directions fixed on the horizontal guide rail assembly 43. The jaw mechanism 44 can clamp the folding paper embedding component 45. Folded insulating paper is placed in the paper embedding unit 450 of the folding paper embedding component 45. Then, the folding paper embedding component 45 is placed in the jaw mechanism 44. The pressing mechanism 3 feeds the insulating paper in the paper embedding unit 450 into the stator fixed on the clamping table 2.

[0021] The paper feeding and embedding mechanism 4 transports the pre-loaded insulating paper folding and embedding assembly 45 to the pressing station. The paper feeding base 42 is connected to the ball screw nut via the main slider and to the auxiliary guide rails 411 on both sides via the auxiliary slider. This structure ensures that the base 42 can move smoothly and accurately in the vertical direction under the drive of the motor.

[0022] In this embodiment, the guide rail assembly 41 includes a main transmission rail 410, which contains a motor disposed at one end and a rotating lead screw connected to the motor located inside the main transmission rail 410; it also includes two auxiliary guide rails 411, which are respectively disposed on both sides of the main transmission rail 410; the paper conveying base 42 is connected to the main transmission rail 410 via a main slider and to the auxiliary guide rails 411 via an auxiliary slider.

[0023] The paper-inserting unit 450 includes a base plate 4500. A paper-inserting tube 4501 is provided on one side of the base plate 4500. The paper-inserting tube 4501 has a trapezoidal groove 4502 extending vertically through it for placing insulating paper. This trapezoidal groove 4502 is used to pre-place insulating paper folded into the corresponding shape. A connecting member is provided on the other side. The connecting member has a protrusion 4503 as a male end and a recess 4504 as a female end. The protrusion 4503 and the recess 4504 are connected by a connecting shaft, and the paper-inserting units 450 can be connected end-to-end to form a closed ring that mates with the inner ring of the stator. Multiple paper-inserting units 450 can interlock through the protrusions 4503 and the recesses 4504 of adjacent units, forming a rigid closed ring. The inner diameter of this closed ring is adapted to the outer diameter of the stator to be processed. It can be fitted onto the outside of the stator or mate with the limiting seat 24 on the clamping table to achieve rapid centering and positioning.

[0024] In this embodiment, the pressing mechanism 3 is used to press the insulating paper from the insert unit 450 into the stator slot. The pressing mechanism 3 includes a hydraulic cylinder 31, with at least four guide rods 32 evenly arranged around the hydraulic cylinder 31. A pressing base 33 is provided at the ends of the hydraulic cylinder 31 and the guide rods 32. Four sliders 34 are provided on the press base 33, and the sliders 34 are arranged in two rows. Each row of sliders 34 is provided with a guide rail 38. A press base plate 35 is fixed on a pair of guide rails 38, and the press base plate 35 is connected to the first cylinder 36 provided on the press base 33. The pressing base plate 35 is provided with two pressing heads arranged side by side. One of the pressing heads is equipped with a miniature cylinder 37 with several ejector pins. The miniature cylinder 37 cooperates with the paper insert tube 4501. The first cylinder 36 drives the pressing base plate 35 to move horizontally.

[0025] Each micro cylinder 37 has a vent pipe connected to the press-fit base plate 35, and a main air pipe is provided in the press-fit base plate 35 and connected to each vent pipe. The main air pipe is connected to an external inflation / deflation device.

[0026] In this embodiment, an operator or external robot connects multiple paper-embedding units 450 in series to form a circle and pre-loads them with folded insulating paper. Then, the entire folded paper-embedding assembly 45 is placed into the open jaw mechanism 44. The jaw mechanism 44 closes, clamping the paper. Simultaneously, the stator is placed into the limiting seat 24 of the clamping table 2.

[0027] Then the servo motor of the paper conveying embedding mechanism 4 is started, driving the paper conveying base 42 to carry the folding embedding component 45 down, so that it fits around the stator and is precisely aligned with the stator slot.

[0028] Then the paper insertion process begins. The hydraulic cylinder 31 of the pressing mechanism 3 operates, driving the entire pressing base 33 downwards, aligning the two pressing heads with a row of paper insertion units 450. Subsequently, the first cylinder 36 actuates, driving the pressing base plate 35 and the pressing heads on it to move horizontally, causing the ejector pin and ejector rod to insert above the trapezoidal groove 4502 of the paper insertion tube 4501. The micro cylinder 37 actuates, pushing the ejector pin downwards, precisely pushing the insulating paper into the corresponding stator groove. Then, the pressing heads are adjusted to press the stator firmly.

[0029] After the entire assembly is completed, hydraulic cylinder 31 drives the pressing mechanism 3 to rise. The paper feeding and embedding mechanism 4 rises and resets, adjusting the folding paper embedding component 45 in the jaw mechanism 44. The folding paper embedding component 45 without folding paper is removed, and the folding paper embedding component 45 with folding paper is placed in and clamped. The second cylinder 24 of the clamping table 2 actuates, moving the stator that has completed the embedding out of the working position and moving in the next stator to be processed, starting a new cycle. The folding paper embedding component 45 that has been used can be removed and reloaded with paper.

[0030] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the technical solution of this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this patent application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this patent application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A stator paper inserting device, comprising a device support (1), characterized in that, The equipment support (1) is provided with a clamping table (2) with an upward operating surface at the lower part and a pressing mechanism (3) with a downward operating surface at the upper part. A paper feeding and embedding mechanism (4) is provided between the clamping table (2) and the pressing mechanism (3) and is fixed on the equipment bracket (1). The paper conveying and embedding mechanism (4) includes a guide rail assembly (41) fixed on the equipment bracket (1), a paper conveying base (42) is provided on the guide rail assembly (41), a horizontal guide rail assembly (43) is fixed on the paper conveying base (42), and a claw mechanism (44) that can move in opposite directions is fixed on the horizontal guide rail assembly (43). The claw mechanism (44) can hold the folding paper embedding component (45). Folded insulating paper is placed in the paper-inserting unit (450) of the origami embedding assembly (45), and then the origami embedding assembly (45) is placed in the claw mechanism (44); the pressing mechanism (3) feeds the insulating paper in the paper-inserting unit (450) into the stator fixed on the clamping table (2).

2. The stator paper inserting equipment according to claim 1, characterized in that, The paper-inserting unit (450) includes a substrate (4500), on one side of the substrate (4500) is a paper-inserting tube (4501), and the paper-inserting tube (4501) has a trapezoidal groove (4502) that runs vertically through it and holds insulating paper; on the other side is a connecting member, which has a protrusion (4503) as a male end and a recess (4504) as a female end. The protrusion (4503) and the recess (4504) are connected by a connecting shaft, and the paper-inserting unit (450) can be connected end to end to form a closed ring that cooperates with the inner ring of the stator.

3. The stator paper inserting equipment according to claim 1 or 2, characterized in that, The guide rail assembly (41) includes a main transmission rail (410), which contains a motor disposed at an end and a rotating lead screw connected to the motor located inside the main transmission rail (410). It also has auxiliary guide rails (411), of which two are provided on both sides of the main transmission rail (410); The paper conveying base (42) is connected to the main conveying rail (410) via a main slider and to the auxiliary guide rail (411) via an auxiliary slider.

4. The stator paper inserting equipment according to claim 2, characterized in that, The pressing mechanism (3) includes a hydraulic cylinder (31), and at least four guide rods (32) are evenly arranged around the hydraulic cylinder (31). The ends of the hydraulic cylinder (31) and the guide rods (32) are provided with pressing bases (33). The press-fit base (33) is provided with a plurality of sliders (34), the sliders (34) are arranged in two columns, and each column of sliders (34) is provided with a guide rail (38); a press-fit base plate (35) is fixed on a pair of guide rails (38), and the press-fit base plate (35) is connected to a first cylinder (36) provided on the press-fit base (33); The base plate (35) of the pressing component is provided with two pressing heads arranged side by side. One of the pressing heads is provided with a miniature cylinder (37) with several ejector pins. The miniature cylinder (37) cooperates with the paper insert tube (4501).

5. The stator paper inserting equipment according to claim 1, characterized in that, The clamping platform (2) includes a support plate (21), on which a pair of second guide rails (22) are provided. Each second guide rail (22) is provided with a plurality of second sliders. Each second slider is provided with a clamping base (23). The clamping base (23) is connected to the support plate (21) through a second cylinder (24). The position of the clamping base (23) is adjusted by the second cylinder (24). The clamping base (23) is provided with at least two limiting seats (25), and the stator to be fitted with insulating paper is placed in the limiting seat (25).

6. The stator paper inserting equipment according to claim 3, characterized in that, The clamping platform (2) is provided with a detection mechanism (5), which has two photoelectric rods (51). The photoelectric rods (51) are located near the auxiliary guide rail (411) and are parallel to the auxiliary guide rail (411). The photoelectric rod (51) is equipped with at least two photoelectric switches, one for high position and one for low position.

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