High-capacity doubly-fed generator stator core laminating equipment

Abstract

The invention discloses a high-capacity doubly-fed generator stator core laminating device, relates to the technical field of motor production, and aims to solve the problem of punching sheet dislocation or deformation caused by a stress concentration phenomenon of single high voltage. Progressive lamination operation is realized in a manner of combining primary lamination with secondary lamination, and then the jacking action is combined with the lamination action, so that the positioning and forming precision of the generator stator iron core sheet is realized, and finally, the quick and effective lamination processing of the generator stator iron core sheet is completed under the condition of combining the double actions, and the production efficiency is improved. The motor production and processing efficiency is improved; through an added thickness detection process, finished product quality detection of generator stator iron core lamination processing is effectively carried out, selection of secondary lamination and discharging is made, lamination efficiency and finished product quality are improved, and continuous preliminary lamination, secondary lamination and synchronous jacking actions supplement each other, so that the production efficiency is improved, and the production cost is reduced. And combining with a finished product quality detection step to jointly form stable lamination processing of the generator stator iron core sheet.

Description

Technical Field

[0001] The present invention relates to the technical field of motor production, and in particular to a stator core lamination device for a large-capacity doubly-fed generator. Background Art

[0002] The motor stator core is composed of multiple layers of silicon steel sheets. These silicon steel sheets need to be surface insulated before lamination to reduce eddy current losses. The lamination process first stacks these silicon steel sheets in a certain order, and then applies pressure through a press to make them tightly combined.

[0003] During the pressing process, each layer of silicon steel sheets must be firmly fixed by means of rivets and other methods to ensure the overall stability of the core. During the lamination process of the motor stator core, the required pressure directly affects the pressing effect of the core and the performance of the motor. Generally speaking, the pressure between the silicon steel sheets should be controlled within the range of 10-20 kgf / cm². This pressure range can not only ensure the close bonding between the silicon steel sheets of the core to avoid loosening and misalignment, but also prevent damage to the core material or destruction of the insulation layer due to excessive pressure.

[0004] Among them, it is important to note that the lamination coefficient of the motor stator core is an important indicator to measure the lamination quality and performance of the stator core, reflecting the proportion of effective material after the core is laminated. Traditional lamination equipment usually adopts a one-time pressurization method when laminating the core silicon steel sheets. However, as the thickness of the silicon steel sheets increases, the friction force also increases accordingly. The stress concentration phenomenon of a single high pressure can easily lead to dislocation or deformation of the punching sheets, making it difficult to ensure the positioning accuracy between the silicon steel sheets. For this reason, the present invention proposes a solution. Summary of the Invention

[0005] The object of the present invention is to provide a large-capacity doubly-fed generator stator core lamination device for solving the problem of punching sheet misalignment or deformation caused by stress concentration phenomenon of single high voltage.

[0006] The object of the present invention can be achieved by the following technical solution: A large-capacity doubly-fed generator stator core lamination device includes a main frame and a feed roller frame, wherein a lamination plate is vertically and movably mounted on the feed distal side of the main frame and the feed roller frame, and the lamination plate is provided with at least three lamination cavities; A step-by-step stacking assembly is suspended above the stacking plate, and the step-by-step stacking assembly includes a swing plate, a front pressing block, and a rear pressing block. The front pressing block and the rear pressing block are always vertically aligned with two of the stacking cavities. A synchronous lifting assembly is also provided below the stacking plate, and the synchronous lifting assembly includes a base plate and a top plate. The top plate is located at the inner bottom of the stacking chamber. A top cylinder for driving the stacking plate to move vertically is provided under the base plate, and a stripping cylinder for driving the top plate to move vertically is provided on the base plate.

[0007] Further settings: the upper end of the swing plate is provided with a motor one, the output end of the motor one is connected with a rotating disc, the middle part of the swing plate is penetratedly installed with a guide rod, the guide rod is slidably installed with a compound frame, the upper end of the compound frame is installed with an eccentric rod connected with the rotating disc.

[0008] Further settings: the lower end of the swing plate is installed with a rear execution rod and a front execution rod, the rear execution rod and the front execution rod are respectively connected with a rear pressing block and a front pressing block.

[0009] Further settings: the upper end of the swing plate is provided with a motor one, the output end of the motor one is connected with a rotating disc, the middle part of the swing plate is penetratedly installed with a guide rod, the guide rod is slidably installed with a compound frame, the upper end of the compound frame is installed with an eccentric rod connected with the rotating disc.

[0010] Further settings: the lower end of the swing plate is installed with a rear execution rod and a front execution rod, the rear execution rod and the front execution rod are respectively connected with a rear pressing block and a front pressing block.

[0011] Further settings: the lower end of the swing plate is installed with a rear execution rod and a front execution rod, the rear execution rod and the front execution rod are respectively connected with a rear pressing block and a front pressing block.

[0012] Further settings: the lower end of the swing plate is installed with a rear execution rod and a front execution rod, the rear execution rod and the front execution rod are respectively connected with a rear pressing block and a front pressing block.

[0013] Further settings: the lower end of the swing plate is installed with a rear execution rod and a front execution rod, the rear execution rod and the front execution rod are respectively connected with a rear pressing block and a front pressing block.

[0014] The present application has the following advantages: The present application is aimed at the problems of punch misplacement or deformation caused by single high-pressure stress concentration; the gradual stacking operation is realized through the preliminary stacking combined with secondary stacking, and the positioning and forming precision of the generator stator core sheet is realized by the jacking action combined with the above stacking action, so that the rapid and effective stacking processing of the generator stator core sheet is completed under the condition of double action combination, the motor production and processing efficiency is improved; and through the added thickness detection process, the finished product quality detection of the generator stator core stacking processing can be effectively carried out, and the selection of re-stacking and discharging is made, so that the stacking efficiency and finished product quality are improved. And in the double superposition action, the generator stator core sheet can get continuous double superposition action, convert single high pressure impact into twice superposition impact, avoid single high pressure stress concentration phenomenon to cause sheet dislocation or deformation, ensure the positioning accuracy between the generator stator core sheets; When the preliminary superposition and secondary superposition action are carried out, the jacking action is also synchronized, that is, the whole superposition disc is driven by the same jacking cylinder to move upward, which is the same as downward pressure, that is, when the preliminary superposition and secondary superposition are carried out, the whole superposition disc moves upward, shortens the starting stroke of the current superposition action, and can complete the superposition processing of the generator stator core sheet in the form of "up and down clamping". BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, below will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0016] Figure 1 The structure of the present application is shown in the figure; Figure 2 The bottom view of the present application is shown in the figure; Figure 3 The structure of the step-by-step superposition assembly of the present application is shown in the figure; Figure 4 The bottom view of the step-by-step superposition assembly of the present application is shown in the figure; Figure 5 The cross-sectional view of the step-by-step superposition assembly of the present application is shown in the figure; Figure 6 The structure of the synchronous jacking assembly of the present application is shown in the figure; Figure 7 The running state diagram of the synchronous jacking assembly of the present application is shown in the figure; Figure 8 The overall cross-sectional view of the present application is shown in the figure; Figure 9 The superposition flow chart of the present application is shown in the figure.

[0017] In the figure: 1, main rack; 2, feeding roller frame; 3, superposition disc; 4, guide cylinder; 5, superposition cavity; 6, motor one; 7, rotating disc; 8, eccentric rod; 9, moving frame; 10, swing plate; 11, rear execution rod; 12, front execution rod; 13, rear pressing block; 14, front pressing block; 15, detection plate; 16, same jacking cylinder; 17, base plate; 18, stripping cylinder; 19, motor two; 20, guide rod; 21, along material rod; 22, top plate; 23, drive rotating rod. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described clearly and completely in combination with the embodiments below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0019] Embodiment one: for the problem of the punching piece dislocation or deformation caused by the stress concentration phenomenon of single high pressure, the following technical solution is proposed: Referring to Figures 1-8 The large-capacity double-fed generator stator core stacking device in the embodiment includes a main frame 1 and a feeding roller frame 2. The feeding distal end of the main frame 1 and the feeding roller frame 2 is vertically movably installed with a stacking disc 3. At least three stacking cavities 5 are formed in the stacking disc 3. Specifically, the three stacking cavities 5 are described. The stacking cavity 5 corresponding to the feeding roller frame 2 is called the primary stacking station. After rotating 120° according to the rotation direction of the stacking disc 3, the stacking cavity 5 is called the secondary stacking station. The generator stator core pieces are sequentially completed with the stacking process in the primary stacking station and the secondary stacking station.

[0020] A step-by-step stacking assembly is suspended above the stacking disc 3. The step-by-step stacking assembly includes a swing plate 10, a front pressing block 14, and a rear pressing block 13. The front pressing block 14 and the rear pressing block 13 are always vertically aligned with two stacking cavities 5. A motor 1 6 is installed above the swing plate 10. The output end of the motor 1 6 is connected with a turntable 7. A guide rod 20 is installed through the middle of the swing plate 10. A compound moving frame 9 is slidably installed on the guide rod 20. The upper end of the compound moving frame 9 is installed with an eccentric rod 8 connected with the turntable 7. The lower end of the swing plate 10 is installed with a rear execution rod 1 1 and a front execution rod 12. The rear execution rod 1 1 and the front execution rod 12 are respectively connected with the rear pressing block 13 and the front pressing block 14. Specifically, the generator stator core pieces are sequentially moved to the stacking cavity 5 (i.e. the primary stacking station) corresponding to the feeding roller frame 2. After moving according to the number, the feeding is stopped. At this time, the motor 1 6 is started to drive the swing plate 10 to swing through the turntable 7 and the eccentric rod 8. The rear pressing block 13 and the front pressing block 14 respectively at the lower end of the rear execution rod 1 1 and the front execution rod 12 are fixed stroke reciprocatingly pressed. In this process, the front execution rod 12 drives the front pressing block 14 to complete the primary stacking of the generator stator core pieces in the primary stacking station. Further, the stacking disc 3 is rotated. The generator stator core pieces completed with the primary stacking are rotated to the secondary stacking station. At this time, the motor 1 6 is continuously started to drive the rear execution rod 1 1 and the rear pressing block 13 to perform the secondary stacking operation on the generator stator core pieces completed with the primary stacking process in the secondary stacking station. During this process, the generator stator iron sheets can undergo continuous double lamination, converting a single high-voltage impact into a double-lamination process, avoiding the stress concentration phenomenon of a single high voltage that causes the punching sheets to be misaligned or deformed, and ensuring the positioning accuracy between the generator stator iron sheets.

[0021] A synchronous lifting assembly is also provided below the stacking plate 3. The synchronous lifting assembly includes a base plate 17 and a top plate 22. The top plate 22 is located at the inner bottom of the stacking chamber 5. A top cylinder 16 for driving the stacking plate 3 to move vertically is provided below the base plate 17. A stripping cylinder 18 for driving the top plate 22 to move vertically is provided on the base plate 17. Specifically, when performing the initial stacking and secondary stacking actions, a lifting action is also performed synchronously, that is, the entire stacking plate 3 is driven to move upward by the top cylinder 16. Similar to the downward pressure, while undergoing the initial stacking and secondary stacking, the stacking plate 3 moves upward as a whole, shortening the starting stroke of the current stacking action, and can jointly complete the stacking processing of the generator stator iron sheets in a "upper and lower clamping" manner.

[0022] Basic principle: When the present invention is in use, during the lamination process of the generator stator iron sheets, a progressive lamination operation is achieved by combining preliminary lamination with secondary lamination, and then a lifting action is combined with the above-mentioned lamination action to jointly achieve the positioning and forming accuracy of the generator stator iron sheets. Finally, under the combination of the dual actions, the rapid and effective lamination process of the generator stator iron sheets is completed, thereby improving the production and processing efficiency of the motor.

[0023] Example 2: This example optimizes the structure of Example 1: Reference Figures 3-5 As shown, a guide cylinder 4 is installed above the stacking plate 3, and the front pressing block 14 and the rear pressing block 13 are vertically slidably connected to the guide cylinder 4. The bottoms of the front pressing block 14 and the rear pressing block 13 extend into the stacking cavity 5 and contact the top plate 22. A detection plate 15 is installed on one side of the guide cylinder 4, and a thickness sensor is embedded in the middle of the lower end of the detection plate 15. Specifically, the purpose of setting up the guide cylinder 4 is to provide the accuracy of the vertical movement of the front actuator rod 12 and the rear actuator rod 11 to drive the front pressure block 14 and the rear pressure block 13 respectively, so as to avoid the uneven stacking caused by the guide skew. The purpose of setting up the thickness sensor is to detect the thickness of the generator stator iron sheet after stacking, and compare it with the thickness required for processing to complete the quality inspection of the finished product.

[0024] Reference Figures 6-9 As shown, a second motor 19 is installed in the middle of the lower end of the base plate 17, and the output end of the second motor 19 is connected to a driving rod 23. The cross section of the driving rod 23 is square and is vertically slidably connected to the base plate 17; Specifically, the drive rod 23 is provided in a square structure, so that the stacking disc 3 can move vertically under the action of the jacking cylinder 16, and drive the stacking disc 3 to rotate when the motor 2 is started to change the stacking position. The rotation and jacking action are independent of each other.

[0025] The stripping cylinder 18 is arranged at the upper end of the base plate 17 and vertically aligned with each stacking chamber 5, and the top plate 22 overlaps the inner bottom of the stacking chamber 5. A pair of guide rods 21 are symmetrically arranged at the outer edge of the stacking disc 3 corresponding to each stacking chamber 5, which are used for guiding the stator core. When feeding, the generator stator core is moved to the surface of the stacking disc 3 by the feeding roller frame 2 and guided by the guide rods 21 to accurately feed into the stacking chamber 5. Specifically, referring to Figure 6 , Figure 7 and Figure 9 , still taking three stacking chambers 5 as an example, during the stacking operation of the generator stator core, after the preliminary stacking and secondary stacking are completed, the stacked generator stator core rotates to the last stacking chamber 5, i.e. below the detection plate 15. The thickness sensor embedded in the detection plate 15 detects the thickness of the stacked generator stator core, and compares the measured thickness with the required thickness. If the required thickness is not met, the motor 2 is started to drive the entire stacking disc 3 to rotate, so that the stacked generator stator core rotates to the preliminary stacking position, and the preliminary stacking and secondary stacking operations are continued. After stacking, the thickness detection is continued until the required thickness is met and the product is discharged. If the required thickness is met, the stripping cylinder 18 is started to drive the top plate 22 to lift the generator stator core, and the finished product completed by the mechanical hand in the prior art is removed, and the next group of generator stator cores is stacked.

[0026] The thickness detection process added in this embodiment can effectively detect the quality of the finished generator stator core, and make a choice between re-stacking and discharging, thereby improving the stacking efficiency and the quality of the finished product. The continuous preliminary stacking, secondary stacking and synchronous jacking action complement each other, and combined with the finished product quality detection process, they together constitute a stable stacking process for the generator stator core.

[0027] Embodiment Three: This embodiment combines the technical contents of Embodiment One and Embodiment Two, and refers to Figures 1-9 , to constitute a large-capacity double-fed generator stator core stacking process and principle, including the following steps: One: preliminary lamination, generator stator core pieces are sequentially moved to the corresponding lamination cavity 5 (i.e. preliminary lamination station) through the feeding roller frame 2, and stop conveying after moving according to the number, at this time, the motor one 6 starts to drive the swing plate 10 to swing through the turntable 7 and the eccentric rod 8, and the rear pressing block 13 and the front pressing block 14 respectively located at the lower end of the rear execution rod 11 and the front execution rod 12 perform the downward pressing action with fixed stroke, in this process, the front execution rod 12 drives the front pressing block 14 to complete the preliminary lamination of the generator stator core pieces in the preliminary lamination station; Two: secondary lamination, further, the lamination disc 3 rotates, and the generator stator core pieces that have completed the preliminary lamination are rotated to the secondary lamination station, at this time, the motor one 6 continues to start, and drives the rear execution rod 11 and the rear pressing block 13 to perform the secondary lamination operation on the generator stator core pieces that have completed the preliminary lamination process in the secondary lamination station, in this process, the generator stator core pieces can obtain the double lamination action continuously, which converts the single high pressure impact into the lamination processing of two times of lamination impact, avoids the stress concentration phenomenon of single high pressure to cause the punching piece dislocation or deformation, and ensures the positioning accuracy between the generator stator core pieces; Three: synchronous jacking action, when the preliminary lamination and the secondary lamination are performed, the jacking action is also performed synchronously, that is, the whole lamination disc 3 is driven to move upward by the jacking cylinder 16, which is the same as the downward pressing, that is, when the preliminary lamination and the secondary lamination are performed, the whole lamination disc 3 is moved upward, which shortens the starting stroke of the current lamination action, and can jointly complete the lamination processing of the generator stator core pieces in the "up-down clamping" mode; Four: after the preliminary lamination and the secondary lamination are continuously completed, at this time, the laminated generator stator core pieces are rotated to the last lamination cavity 5, that is, below the detection plate 15, the thickness sensor embedded on the detection plate 15 detects the thickness of the laminated generator stator core pieces, and compares and analyzes the measured thickness value with the required thickness of lamination; If the required thickness is not met, the motor two 19 is started, the motor two 19 drives the whole lamination disc 3 to rotate, so that the laminated generator stator core pieces are rotated to the preliminary lamination station, and the preliminary lamination and the secondary lamination are continuously performed, and the thickness detection is continuously performed after lamination until the required thickness is met and the discharge is stopped; If the required thickness is met, the discharging cylinder 18 is started, and the discharging cylinder 18 drives the top plate 22 to lift the generator stator core pieces upward to complete the discharge.

[0028] In summary, the gradual lamination operation is realized by the primary lamination and the secondary lamination, and the positioning and forming precision of the generator stator core piece is realized by the jacking action combined with the lamination action. In the combination of the double actions, the fast and effective lamination processing of the generator stator core piece is completed, and the motor production and processing efficiency is improved. The added thickness detection process can effectively detect the finished product quality of the generator stator core lamination processing, and make the selection of secondary lamination and discharge, so as to improve the lamination efficiency and the finished product quality. The continuous primary lamination, secondary lamination and synchronous jacking action complement each other, and combined with the finished product quality detection process, the stable lamination processing of the generator stator core piece is formed.

[0029] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and do not limit the present application to the specific embodiments.

Claims

1. A large-capacity doubly-fed generator stator core lamination device, comprising a main frame (1) and a feed roller frame (2), characterized in that: A stacking plate (3) is vertically and movably mounted on the feed distal side of the main frame (1) and the feed roller frame (2), and at least three stacking cavities (5) are formed on the stacking plate (3); A step-by-step stacking assembly is suspended above the stacking plate (3), and the step-by-step stacking assembly includes a swing plate (10), a front pressing block (14), and a rear pressing block (13), wherein the front pressing block (14) and the rear pressing block (13) are always vertically aligned with two of the stacking cavities (5); A synchronous lifting assembly is also provided below the stacking plate (3), and the synchronous lifting assembly includes a base plate (17) and a top plate (22). The top plate (22) is located at the inner bottom of the stacking chamber (5). A top cylinder (16) for driving the stacking plate (3) to move vertically is provided below the base plate (17), and a stripping cylinder (18) for driving the top plate (22) to move vertically is provided on the base plate (17).

2. The large-capacity doubly-fed generator stator core lamination equipment according to claim 1, characterized in that: A motor (6) is provided above the swing plate (10), and an output end of the motor (6) is connected to a turntable (7). A guide rod (20) is installed through the middle of the swing plate (10), and a reciprocating frame (9) is slidably installed on the guide rod (20). An eccentric rod (8) connected to the turntable (7) is installed at the upper end of the reciprocating frame (9).

3. The large-capacity doubly-fed generator stator core lamination equipment according to claim 2, characterized in that: A rear actuating rod (11) and a front actuating rod (12) are mounted on the lower end of the swing plate (10), and the rear actuating rod (11) and the front actuating rod (12) are connected to a rear pressing block (13) and a front pressing block (14) respectively.

4. The large-capacity doubly-fed generator stator core lamination equipment according to claim 3, characterized in that: A guide cylinder (4) is installed above the stacking plate (3), and the front pressing block (14) and the rear pressing block (13) are both vertically slidably connected to the guide cylinder (4). The bottoms of the front pressing block (14) and the rear pressing block (13) extend into the stacking cavity (5) and contact the top plate (22).

5. The large-capacity doubly-fed generator stator core lamination equipment according to claim 1, characterized in that: A second motor (19) is installed in the middle of the lower end of the base plate (17), and the output end of the second motor (19) is connected to a driving rod (23). The driving rod (23) has a square cross section and is vertically slidably connected to the base plate (17).

6. The large-capacity doubly-fed generator stator core lamination equipment according to claim 1, characterized in that: The stripping cylinder (18) is arranged at the upper end of the base plate (17) and is vertically aligned with each lamination cavity (5), and the top plate (22) overlaps with the inner bottom of the lamination cavity (5).

7. The large-capacity doubly-fed generator stator core lamination equipment according to claim 4, characterized in that: A detection plate (15) is installed on one side of the guide cylinder (4), and a thickness sensor is embedded in the middle of the lower end of the detection plate (15).

8. The large-capacity doubly-fed generator stator core lamination equipment according to claim 1, characterized in that: Along-feed rods (21) are symmetrically mounted at the outer edges of the stacking disc (3) corresponding to each stacking cavity (5), and a pair of along-feed rods (21) are used for feeding guides of the stator core.

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