Transformer core silicon steel sheet stacking and pressing mechanism

Abstract

The utility model discloses a transformer iron core silicon steel sheet stack press mechanism, including base, processing board, push material subassembly, and the base top is connected with the processing table and is equipped with the processing groove in the processing table, and the processing board is connected in the processing groove and is equipped with the stack subassembly in processing board bottom, and the stack subassembly includes bevel gear wheel, servo motor, and the bevel gear wheel is meshed with two sets of bevel gears on the bevel gear wheel, one end is connected with the lead screw of bevel gear wheel, through the stack subassembly, utilizes servo motor to drive bevel gear wheel rotation, and then makes bevel gear wheel and lead screw rotate, and the push plate is driven along the lead screw axial movement with the lead screw nut, and two sets of push plate are driven to be close to each other under the lead screw nut transmission, thereby when two sets of push plate are close to each other, can push the silicon steel sheet movement, makes the silicon steel sheet gradually stack neat on the processing board, effectively avoids the instability of manual operation and the defect of simple mechanical hand, greatly improves the stack efficiency, and greatly improves the processing efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and particularly relates to a stacked and pressed mechanism for silicon steel sheets of a transformer core. Background Technique

[0002] A transformer core is a support skeleton for winding transformer coil windings. It is a structure with a fixed shape formed by laminating multiple silicon steel sheets. And the transformer core usually needs to form a winding skeleton with a "day" - shaped structure. During the process of manufacturing a transformer core with a "day" - shaped structure, a stacker is required to stack multiple iron core sheets together according to corresponding requirements and perform pressing.

[0003] Currently, during the stacking and pressing process of silicon steel sheets for a transformer core, during the feeding process of the silicon steel sheets, mostly traditional manual stacking or simple manipulator - assisted stacking methods are adopted. Manual stacking has low efficiency and it is difficult to ensure the neatness and consistency of the stacked silicon steel sheets, resulting in uneven magnetic circuits of the iron core, increasing hysteresis and eddy - current losses, and reducing the working efficiency and service life of the transformer. Although simple manipulator - assisted stacking improves the stacking efficiency to a certain extent, during operation, when affected by the vibration generated by its own movement and the vibration of the external environment, the manipulator is prone to deformation or shaking. This instability will be directly transmitted to the silicon steel sheets, destroying the accuracy of stacking, causing offset and dislocation problems, and thus unable to effectively ensure the stacking accuracy. Therefore, after the silicon steel sheets are stacked and fed, it is necessary to manually keep the neatness of the stacked silicon steel sheets consistent, which is rather inconvenient and greatly reduces the processing efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a stacked and pressed mechanism for silicon steel sheets of a transformer core to solve the problems raised in the above - mentioned background technique.

[0005] To achieve the above - mentioned purpose, the utility model provides the following technical solution: A stacked and pressed mechanism for silicon steel sheets of a transformer core, comprising:

[0006] A base, a processing table is connected to the top of the base and a processing groove is arranged inside the processing table;

[0007] A processing plate, the processing plate is connected inside the processing groove, and a stacking component for keeping the silicon steel sheets neat during stacking is arranged at the bottom of the processing plate. The stacking component includes a bevel gear disk and a servo motor. The bevel gear disk is rotatably connected to the processing groove through a bearing. Two groups of bevel gears are meshed on the bevel gear disk. One end of the bevel gear is connected with a lead screw. A push plate is connected to the lead screw through a lead screw nut. By rotating the bevel gear disk and driving the meshed bevel gears and the lead screw to rotate, the rotating lead screw drives the two push plates to approach each other to push the silicon steel sheets to be stacked neatly;

[0008] A feeding assembly, which is located inside the processing plate, is used to push the pressed silicon steel sheet out.

[0009] Preferably, the servo motor is located inside the base and the output shaft of the servo motor is connected to the bevel gear plate, and the other end of the lead screw is connected to the base through a bearing.

[0010] Preferably, the top end of the push plate movably passes through the slot provided in the processing plate, and the bottom end is slidably connected to the slide groove provided in the base through a slider.

[0011] Preferably, a protective pad is connected to the push plate, and a stand is connected to one side of the base, with a pressing plate slidably connected to the surface of the stand.

[0012] Preferably, the pushing assembly includes a first cylinder, which is disposed inside the processing plate and the piston rod of the first cylinder is connected to a movable plate. The two ends of the movable plate are slidably connected to guide grooves provided inside the processing plate.

[0013] Preferably, the top of the movable plate is connected to a top plate via a connecting rod.

[0014] Preferably, the top of the support frame is provided with a second cylinder, and the piston rod of the second cylinder moves through the support frame and connects to the pressing plate.

[0015] Preferably, two sets of guide rods are connected between the processing table and the upright frame, and the two ends of the pressing plate are slidably sleeved on the guide rods.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) By using the stacking assembly, the servo motor drives the bevel gear disk to rotate, which in turn causes the bevel gear and lead screw to rotate. The lead screw nut drives the push plate to move along the lead screw axis. The two sets of push plates approach each other under the drive of the lead screw nut, so that when the two sets of push plates approach each other, they can push the silicon steel sheet to move, so that the silicon steel sheet is gradually stacked neatly on the processing plate. This effectively avoids the instability of manual operation and the defects of simple robotic arms, greatly improves the stacking efficiency, and greatly improves the processing efficiency.

[0018] (2) In the stacking, pressing and unloading process of silicon steel sheets, automated operation is achieved by servo motor, second cylinder and first cylinder respectively. Servo motor drives stacking component to complete steel sheet stacking, second cylinder drives pressing plate to press the stacked steel sheet, first cylinder drives pushing component to push out the pressed steel sheet, reducing manual intervention, improving production efficiency and reducing labor intensity.

[0019] (3) The protective pads connected to the push plate can prevent the push plate from making direct hard contact with the steel sheet during the process of pushing the steel sheet, prevent damage to the surface of the silicon steel sheet, and ensure the quality of the steel sheet. At the same time, the precise stacking and stable pressing process also help to improve the overall quality of the transformer core, thereby improving the performance of the transformer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the movable plate and the top plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the meshing structure of the bevel gear and bevel gear disc of this utility model;

[0024] Figure 5 This is a flowchart illustrating the stacking of silicon steel sheets using the pusher plate of this utility model.

[0025] Figure 6 This is a top view of the processing table of this utility model.

[0026] In the diagram: 1. Base; 2. Machining table; 3. Machining groove; 4. Machining plate; 5. Silicon steel sheet; 6. Bevel gear disc; 7. Servo motor; 8. Bevel gear; 9. Lead screw; 10. Push plate; 11. Slot; 12. Slider; 13. Slide groove; 14. Protective pad; 15. Stand; 16. Pressing plate; 17. First cylinder; 18. Moving plate; 19. Guide groove; 20. Connecting rod; 21. Top plate; 22. Second cylinder; 23. Guide rod; 24. Positioning hole; 25. Pressure sensor; 26. Pressing area. Detailed Implementation

[0027] 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.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] This utility model provides, for example Figure 1-6 The transformer core silicon steel sheet stacking and pressing mechanism shown includes:

[0030] Base 1, with a processing table 2 connected to the top of the base 1 and a processing groove 3 provided inside the processing table 2;

[0031] The processing plate 4 is connected to the processing groove 3 and has a stacking assembly at its bottom to keep the silicon steel sheets 5 neatly stacked. The stacking assembly includes a bevel gear disk 6 and a servo motor 7. The bevel gear disk 6 is rotatably connected to the processing groove 3 through bearings. Two sets of bevel gears 8 are meshed on the bevel gear disk 6. One end of the bevel gear 8 is connected to a lead screw 9. A push plate 10 is connected to the lead screw 9 through a lead screw nut. The rotation of the bevel gear disk 6 drives the meshing bevel gears 8 and the lead screw 9 to rotate, so that the rotating lead screw 9 drives the two sets of push plates 10 to move closer to each other and push the silicon steel sheets 5 to be stacked neatly.

[0032] The material pushing assembly is located inside the processing plate 4 and is used to push the pressed silicon steel sheet 5 out of the plate.

[0033] The servo motor 7 is located inside the base 1 and its output shaft is connected to the bevel gear disk 6. The other end of the lead screw 9 is connected to the base 1 through a bearing.

[0034] The top end of the push plate 10 is movably connected through the slot 11 provided in the processing plate 4, and the bottom end is slidably connected to the slide groove 13 provided in the base 1 via the slider 12. The slider 12 at the bottom of the push plate 10 and the slide groove 13 in the base 1 are slidably connected to form a stable linear guide structure. The constraint of the slide groove 13 on the slider 12 makes the push plate 10 move only along the axial direction of the lead screw 9 when it moves, thus avoiding lateral displacement.

[0035] A protective pad 14 is connected to the push plate 10. A stand 15 is connected to one side of the base 1, and a pressing plate 16 is slidably connected to the surface of the stand 15. The protective pad 14 is made of elastic materials such as rubber and silicone, and is soft in texture. When the push plate 10 pushes the silicon steel sheet 5 to move, the protective pad 14 acts as a protective layer between the push plate 10 and the silicon steel sheet 5, avoiding direct rigid contact between the push plate 10 and the silicon steel sheet 5, effectively preventing scratches, dents and other damage to the surface of the silicon steel sheet 5, and ensuring the integrity of the surface of the silicon steel sheet 5.

[0036] The pushing assembly includes a first cylinder 17, which is located inside the processing plate 4 and the piston rod of the first cylinder 17 is connected to a moving plate 18. The two ends of the moving plate 18 are slidably connected to the guide groove 19 provided in the processing plate 4. The top of the moving plate 18 is connected to a top plate 21 through a connecting rod 20. When the piston rod of the first cylinder 17 extends, the moving plate 18 can only move along the direction of the guide groove 19, avoiding lateral deviation or shaking during the pushing process and ensuring that the pressed silicon steel sheet 5 is accurately pushed out of the processing groove 3.

[0037] The top of the support frame 15 is provided with a second cylinder 22, and the piston rod of the second cylinder 22 moves through the support frame 15 and is connected to the pressing plate 16.

[0038] Two sets of guide rods 23 are connected between the processing table 2 and the stand 15, and the two ends of the pressing plate 16 are slidably sleeved on the guide rods 23. The two sets of guide rods 23 provide linear guidance for the pressing plate 16, so that it always maintains a vertical movement trajectory during the up and down movement. When pressing the silicon steel sheet 5, the pressing plate 16 can press down vertically to ensure that the pressing force 16 is evenly applied to the surface of the silicon steel sheet 5, and avoid uneven force on the silicon steel sheet 5 due to the tilt of the pressing plate 16, so as to make the thickness of the iron core laminations uniform.

[0039] The transformer core silicon steel sheet stacking and pressing mechanism places the silicon steel sheets 5 one by one onto the processing plate 4, positioned between the preset working areas of the two sets of push plates 10, using manual stacking or simple robotic arm-assisted stacking. Then, the control box on the base 1 controls the start of the servo motor 7. The output shaft of the servo motor 7 drives the bevel gear disk 6 to rotate within the processing groove 3. Multiple meshing bevel gears 8 are evenly distributed on the surface of the bevel gear disk 6. Utilizing the precision of gear transmission, when the bevel gear disk 6 rotates, the rotational power is transmitted to the bevel gears 8 through inter-tooth meshing, ensuring… Each bevel gear 8 rotates synchronously and stably, and each bevel gear 8 has a lead screw 9 rigidly connected to one end. When the bevel gear 8 rotates, the lead screw 9 rotates accordingly. The lead screw 9 and the push plate 10 are connected by a lead screw and nut transmission pair. The lead screw and nut convert the rotational motion of the lead screw 9 into linear motion. When the lead screw 9 rotates, the lead screw and nut drive the push plate 10 to move along the axial direction of the lead screw 9. The two sets of push plates 10 move closer to each other under the transmission of the lead screw and nut. The slider 12 at the bottom of the push plate 10 cooperates with the slide groove 13 in the base 1 to provide stable guidance for the movement of the push plate 10. A displacement sensor (not shown in the attached figure), such as a linear displacement sensor, is installed on the moving path of the push plate 10 (inside the processing plate 4). The measuring rod of the displacement sensor is fixedly connected to the push plate 10, and the sensor body is installed on the processing plate 4. When the push plate 10 moves, the measuring rod of the displacement sensor moves accordingly. The sensor can accurately measure the displacement of the push plate 10 in real time and convert the displacement signal into an electrical signal output. The output signal of the displacement sensor is connected to the control box. The moving distance threshold of the push plate 10 can be preset in the control box. When the displacement signal fed back by the sensor reaches or exceeds the threshold, the control box immediately issues a control command to stop the operation of the servo motor 7, thereby stopping the push plate 10 from moving. This achieves control over the movement of the push plate 10. When the two sets of push plates 10 approach each other, they can push the silicon steel sheet 5 to move, so that the left and right ends of the silicon steel sheet 5 are stacked neatly. Since the processing groove 3 can restrict the front and rear ends of the silicon steel sheet 5 neatly when the silicon steel sheet 5 is placed into the processing groove 3 one by one, the two sets of push plates 10 can make the silicon steel sheet 5 gradually stacked neatly on the processing plate 4.

[0040] After the stacking assembly completes the stacking of silicon steel sheets 5, the operator controls the second cylinder 22 at the top of the starter frame 15 via the control box on the base 1. When the piston rod of the second cylinder 22 extends, it drives the pressing plate 16 to slide downward along the guide rod 23. When the pressing plate 16 contacts the pressing area 26 on the silicon steel sheet 5, the second cylinder 22 continuously applies pressure to make the silicon steel sheets 5 tightly bonded. During the pressing process, the pressure sensor 25 inside the pressing plate 16 monitors the pressure value in real time. Since the pressure sensor 25 does not directly contact the silicon steel sheet 5, its measurement relies on the "transmission and reaction of force". Based on the principle of "force", the second cylinder 22 of the pressing mechanism pushes the pressing plate 16 downward. The pressing plate 16 contacts the pressing area 26 on the silicon steel sheet 5 and applies pressure. At this time, the silicon steel sheet 5 will generate a reaction force of equal magnitude and opposite direction on the pressing plate 16. This reaction force is transmitted to the internal pressure sensor 25 through the pressing plate 16. The sensor converts the mechanical signal into an electrical signal, thereby realizing the measurement of the pressure value and ensuring that the pressure is stable within the set range (5-15MPa). Finally, the silicon steel sheet 5 forms an "E" shaped structure that meets the design requirements of the transformer core.

[0041] After the pressing process is completed, the operator can open (attached). Figure 1 The sealing door on the base 1 is then opened, and one end of the threaded rod is passed through the positioning hole 24. At this time, the operator can control the start of the first cylinder 17 in the processing plate 4 through the control box. The first cylinder 17 is a compact cylinder, and its piston rod is connected to the moving plate 18 by bolts. When the piston rod of the first cylinder 17 extends, it drives the moving plate 18 to slide stably in the guide groove 19. The top of the moving plate 18 is connected to the top plate 21 through the connecting rod 20. When the moving plate 18 moves, it drives the top plate 21 to push the pressed silicon steel sheet 5, so that the bottom of the silicon steel sheet 5 is separated from the processing plate 4. Because one end of the threaded rod passes through the positioning hole 24 on the silicon steel sheet 5, the silicon steel sheet 5 will not shift when the top plate 21 lifts it up, and can remain in a pressed state. After the bottom of the silicon steel sheet 5 is separated from the processing plate 4, the bolt can be screwed to the end of the threaded rod that passes through the positioning hole 24, thereby limiting the stacked and pressed silicon steel sheet 5 and preventing it from shifting. Then the first cylinder 17 can continue to work, pushing the pressed silicon steel sheet 5 out of the processing groove 3 through the top plate 21, and smoothly discharge it to enter the subsequent processing or treatment stage.

[0042] This invention allows for manual adjustment by connecting the servo motor 7, the first cylinder 17, and the second cylinder 22 to corresponding switches and buttons. For example, switches can be used to control the forward and reverse rotation of the servo motor 7, or to control the extension or retraction of the cylinders. Alternatively, intelligent control can be employed, such as by connecting to a Siemens PLC or a single-chip microcomputer STM32. This is an existing mature control technology and will not be described in detail here.

[0043] Of course, in this utility model, the models of the first cylinder 17 and the second cylinder 22 can be: the second cylinder 22 is a DA series double-acting cylinder with a cylinder diameter of 50mm, which can provide a large thrust to meet the pressing requirements, and a stroke of 100mm, which can ensure that the pressing plate has enough moving distance to complete the pressing operation of the silicon steel sheet; the first cylinder 17 is one of the following: Airtac: SC32×150-S (compact / built-in guide).

[0044] The servo motor 7 model can be selected from one of the following: Panasonic MINASA6 series servo motor, Siemens V90 series servo motor, or Delta ECMA-C10602SS (servo motor + driver);

[0045] The pressure sensor model can be either Honeywell's LM industrial pressure sensor, which has a wide pressure measurement range and can meet the preset pressure monitoring requirements of 5-15MPa, or Balluff's BTL series pressure sensor, model BTL7-A500-M0250-P-S32. Choose one of them.

[0046] The linear displacement sensor can be one of the following models: NOVOTECHNIK TLH series from Germany, such as the TLH-0500 model, which has a working range of up to 500mm; or GEFRAN PK-M series from Italy, such as the PK-M-0600-XL0327 model, which has a measuring stroke of 600mm. Choose one of these models.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanism for stacking and pressing silicon steel sheets for transformer cores, characterized in that, include: A base (1) is connected to a processing table (2) on its top and a processing groove (3) is provided inside the processing table (2); The processing plate (4) is connected to the processing groove (3) and the bottom of the processing plate (4) is provided with a stacking assembly for keeping the silicon steel sheets (5) neat when stacked. The stacking assembly includes a bevel gear disk (6) and a servo motor (7). The bevel gear disk (6) is rotatably connected to the processing groove (3) through a bearing. Two sets of bevel gears (8) are meshed on the bevel gear disk (6). One end of the bevel gear (8) is connected to a lead screw (9). A push plate (10) is connected to the lead screw (9) through a lead screw nut. The bevel gear disk (6) rotates and drives the meshing bevel gears (8) and the lead screw (9) to rotate, so that the rotating lead screw (9) drives the two sets of push plates (10) to move closer to each other and push the silicon steel sheets (5) to be stacked neatly. The material pushing component is located inside the processing plate (4) and is used to push the pressed silicon steel sheet (5) out.

2. The transformer core silicon steel sheet stacking and pressing mechanism according to claim 1, characterized in that: The servo motor (7) is located inside the base (1) and the output shaft of the servo motor (7) is connected to the bevel gear disk (6). The other end of the lead screw (9) is connected to the base (1) through a bearing.

3. The transformer core silicon steel sheet stacking and pressing mechanism according to claim 1, characterized in that: The top end of the push plate (10) is movably connected through the slot (11) provided in the processing plate (4), and the bottom end is slidably connected to the sliding groove (13) provided in the base (1) through the slider (12).

4. The transformer core silicon steel sheet stacking and pressing mechanism according to claim 1, characterized in that: A protective pad (14) is connected to the push plate (10), and a stand (15) is connected to one side of the base (1), with a pressing plate (16) slidably connected to the surface of the stand (15).

5. The transformer core silicon steel sheet stacking and pressing mechanism according to claim 1, characterized in that: The pushing assembly includes a first cylinder (17), which is located inside the processing plate (4) and the piston rod of the first cylinder (17) is connected to a moving plate (18). The two ends of the moving plate (18) are slidably connected to the guide groove (19) provided in the processing plate (4).

6. The transformer core silicon steel sheet stacking and pressing mechanism according to claim 5, characterized in that: The top of the movable plate (18) is connected to a top plate (21) via a connecting rod (20).

7. The transformer core silicon steel sheet stacking and pressing mechanism according to claim 4, characterized in that: The top of the stand (15) is provided with a second cylinder (22), and the piston rod of the second cylinder (22) moves through the stand (15) and is connected to the pressing plate (16).

8. The transformer core silicon steel sheet stacking and pressing mechanism according to claim 4, characterized in that: Two sets of guide rods (23) are connected between the processing table (2) and the stand (15), and the two ends of the pressing plate (16) are slidably sleeved on the guide rods (23).

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