A punching and shearing device for silicon steel sheets in transformer cores

Abstract

This utility model relates to the field of silicon steel sheet processing technology, and discloses a punching and shearing device for transformer core silicon steel sheets. It includes a gantry frame mounted above a punching and shearing table, with a punching and shearing machine movably fitted inside the gantry frame; a first pressure roller rotatably connected to the punching and shearing table, located on the side of the punching and shearing machine near the first conveyor belt; a first drive assembly mounted on the punching and shearing table, the drive end of which is connected to the first pressure roller, allowing for an adjustable distance between the first pressure roller and the punching and shearing table; a second pressure roller rotatably connected to a guide table, positioned on the top surface of the guide table near the punching and shearing table, with an elastic tendency towards the top surface of the guide table; and a third pressure roller rotatably connected to the guide table, positioned on the top surface of the guide table near the second conveyor belt, also with an elastic tendency towards the top surface of the guide table. This device can improve the punching and shearing quality of silicon steel sheets and increase production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of silicon steel sheet processing technology, and in particular to a punching and shearing device for silicon steel sheets of transformer cores. Background Technology

[0002] A punching and shearing machine is a multi-functional forging and pressing equipment, mainly used for cutting coiled materials such as galvanized iron, silicon steel sheets, and stainless steel strips. Among them, punching and shearing silicon steel sheets is an essential step in the processing of transformer cores.

[0003] Existing punching and shearing machines for processing silicon steel sheets still have certain problems during use. For example, in the punching and shearing machine with easy material cutting proposed in application number 202123007260.6, the silicon steel sheets are directly conveyed after punching and shearing, lacking a fixing device for the cut steel sheets and the overall steel sheets. This causes the steel sheets to easily move, affecting the punching and shearing quality. Therefore, there is an urgent need for a silicon steel sheet punching and shearing device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a punching and shearing device for silicon steel sheets in transformer cores, so as to solve the problems existing in the prior art and improve the punching and shearing quality of silicon steel sheets and increase production efficiency.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a punching and shearing device for silicon steel sheets in transformer cores, comprising:

[0006] The first conveyor belt, punching and shearing table, guide table and second conveyor belt are set up sequentially along the production direction;

[0007] A gantry frame is erected above the punching and shearing table, and a punching and shearing machine is movably fitted inside the gantry frame.

[0008] The first pressure roller is rotatably connected to the punching and shearing table and is located on the side of the punching and shearing machine closer to the first conveyor belt. The punching and shearing table is provided with a first drive assembly, and the drive end of the first drive assembly is connected to the first pressure roller so that there is an adjustable gap between the first pressure roller and the punching and shearing table.

[0009] The second pressure roller is rotatably connected to the guide table. The second pressure roller is arranged on the top surface of the guide table near the punching and shearing table. The second pressure roller has an elastic tendency toward the top surface of the guide table.

[0010] A third pressure roller is rotatably connected to the guide platform. The third pressure roller is arranged on the top surface of the guide platform near the second conveyor belt, and the third pressure roller has an elastic tendency toward the top surface of the guide platform.

[0011] Preferably, the top surface of the guide table is integrally formed with a slope on the side near the punching and shearing table, the high end of the slope extends to the top surface of the punching and shearing table, and the second pressure roller is connected to the low end of the slope.

[0012] Preferred options also include:

[0013] A pair of first baffles are fixedly connected to each other on both sides of the top surface of the guide table. The first baffles are respectively provided with a second drive assembly connected to the second pressure roller and a third drive assembly connected to the third pressure roller.

[0014] A conveyor table is placed on the side of the punching and shearing table away from the guide table. The top surface of the conveyor table is movably fitted with the first conveyor belt. The top surface of the first conveyor belt is flush with the top surface of the punching and shearing table. A pair of second baffles are fixed to opposite sides of the top surface of the conveyor table.

[0015] The guide table has a groove on the side away from the punching and shearing table, and the second conveyor belt is movably fitted into the groove, with the top surface of the second conveyor belt flush with the top surface of the guide table.

[0016] Preferably, the first driving component includes:

[0017] A pair of first sliders, wherein the gantry frame has first sliding grooves on opposite sides, and the pair of first sliders are respectively limited and slidably connected in the two first sliding grooves;

[0018] The first connecting rod is mounted and fixed between a pair of first sliders. The two ends of the first pressure roller are respectively connected to the pair of first sliders, and the top end of the first pressure roller does not contact the first connecting rod.

[0019] A first drive motor is fixedly connected to any one of the first sliders, and the output shaft of the first drive motor is coaxially fixedly connected to the first pressure roller.

[0020] A servo cylinder is fixedly connected to the inner wall of the top of the first slide groove, and the piston rod of the servo cylinder extends vertically downward and is fixedly connected to the first connecting rod.

[0021] Preferably, the second driving component includes:

[0022] A pair of second sliders are provided, and a pair of first baffles are provided with second sliding grooves. The pair of second sliders are respectively slidably connected in the two second sliding grooves.

[0023] The second connecting rod is mounted and fixed between a pair of second sliders. The two ends of the second pressure roller are respectively connected to the pair of second sliders. The top end of the second pressure roller does not contact the second connecting rod.

[0024] The second drive motor is fixedly connected to any one of the second sliders, and the output shaft of the second drive motor is coaxially fixedly connected to the second pressure roller.

[0025] A telescopic rod is fixed to the inner wall of the top of the second slide groove. The telescopic end of the telescopic rod extends vertically downward and is fixed to the second connecting rod. A support spring is wound around the telescopic rod, and the two ends of the support spring abut against the top of the second connecting rod and the second slide groove, respectively.

[0026] Preferably, the third driving component includes:

[0027] Two support rods are fixedly connected to each other on the adjacent sides of a pair of first baffles. A sleeve is elastically connected to the support rod. A fixing rod is fixedly connected to the outer wall of the sleeve. The fixing rod extends downwards towards the second conveyor belt.

[0028] The adapter seat is fixed to the side of the fixed rod near the second conveyor belt, and the two ends of the third pressure roller are respectively connected to the two adapter seats arranged opposite to each other;

[0029] The third drive motor is fixedly connected in any of the aforementioned adapter seats, and the output shaft of the third drive motor is coaxially fixedly connected to the third pressure roller.

[0030] Preferably, a torsion spring is wound around the support rod, and a slot is formed on the side of the sleeve near the support rod, the slot covering the support rod, and the two ends of the torsion spring are fixedly connected to the support rod and the sleeve, respectively.

[0031] Preferably, a plurality of pressure rollers are coaxially fixed to the first, second, and third pressure rollers.

[0032] The present invention discloses the following technical effects:

[0033] This technical solution uses a punching and shearing machine to punch and shear silicon steel sheets on a punching and shearing table. During the punching and shearing process, a first pressure roller stably conveys the sheet material transported by a first conveyor belt. A first drive component adjusts the distance between the first pressure roller and the punching and shearing table to ensure that the first pressure roller can accurately and firmly press and hold silicon steel sheets of different thicknesses. As the punching and shearing machine continues to punch and shear, the split silicon steel sheets fall from the punching and shearing table onto a guide table. At this time, a second pressure roller connected to the guide table guides and transports the split silicon steel sheets. The second pressure roller has an elastic tendency towards the guide table, allowing it to adjust its distance from the guide table in a timely manner according to the thickness of the split silicon steel sheets, ensuring stable guidance. When the split silicon steel sheets move onto the second conveyor belt, a third pressure roller clamps and stabilizes the split silicon steel sheets near the second conveyor belt, ensuring that the ends of the split silicon steel sheets remain horizontal as they extend out of the guide table until they move to the top surface of the second conveyor belt. This effectively enhances the punching and shearing quality of the silicon steel sheets and improves punching and shearing efficiency. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a diagram showing the positional relationship between the gantry and the first baffle in this utility model;

[0036] Figure 2 This is a diagram showing the positional relationship between the punching and shearing table and the punching and shearing machine in this utility model;

[0037] Figure 3 This is a diagram showing the positional relationship between the guide platform and the second pressure roller in this utility model.

[0038] Figure 4 This is a schematic diagram of the structure of the first pressure roller in this utility model;

[0039] The components are as follows: 1. First conveyor belt; 2. Punching and shearing table; 3. Guide table; 4. Gantry frame; 5. Second conveyor belt; 6. Punching and shearing machine; 7. First pressure roller; 8. Second pressure roller; 9. Third pressure roller; 10. First baffle; 11. Conveying table; 12. Second baffle; 13. First slider; 14. First connecting rod; 15. First drive motor; 16. Servo cylinder; 17. Second slider; 18. Second connecting rod; 19. Second drive motor; 20. Telescopic rod; 21. Support spring; 22. Support rod; 23. Sleeve; 24. Fixed rod; 25. Adapter seat; 26. Third drive motor; 27. Torsion spring; 28. Pressure roller. Detailed Implementation

[0040] 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.

[0041] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Reference Figures 1-4 This utility model provides a punching and shearing device for silicon steel sheets in transformer cores, comprising:

[0043] The first conveyor belt 1, the punching and shearing table 2, the guide table 3, and the second conveyor belt 5 are set up sequentially along the production direction;

[0044] Gantry frame 4 is erected above punching and shearing table 2, and punching and shearing machine 6 is movable inside gantry frame 4;

[0045] The first pressure roller 7 is rotatably connected to the punching and shearing table 2 and is located on the side of the punching and shearing machine 6 close to the first conveyor belt 1. The punching and shearing table 2 is provided with a first drive assembly, and the drive end of the first drive assembly is connected to the first pressure roller 7 so that there is an adjustable gap between the first pressure roller 7 and the punching and shearing table 2.

[0046] The second pressure roller 8 is rotatably connected to the guide table 3. The second pressure roller 8 is arranged on the top surface of the guide table 3 near the punching and shearing table 2. The second pressure roller 8 has an elastic tendency toward the top surface of the guide table 3.

[0047] The third pressure roller 9 is rotatably connected to the guide table 3. The third pressure roller 9 is arranged on the top surface of the guide table 3 near the second conveyor belt 5. The third pressure roller 9 has an elastic tendency toward the top surface of the guide table 3.

[0048] This technical solution uses a punching and shearing machine 6 to punch and shear silicon steel sheets on a punching and shearing table 2. During the punching and shearing process, a first pressure roller 7 stably conveys the sheet material transported by the first conveyor belt 1. The first drive assembly adjusts the distance between the first pressure roller 7 and the punching and shearing table 2 to ensure that the first pressure roller 7 can accurately and firmly press and secure silicon steel sheets of different thicknesses. As the punching and shearing machine 6 continues to punch and shear, the separated silicon steel sheets fall from the punching and shearing table 2 onto the guide table 3. At this time, the second pressure roller 8, which is connected to the guide table 3, guides the separated silicon steel sheets. The second pressure roller 8 has an elastic tendency to move towards the guide table 3, which allows the second pressure roller 8 to adjust the distance between itself and the guide table 3 in a timely manner according to the thickness of the split silicon steel sheet, ensuring stable guidance. When the split silicon steel sheet moves onto the second conveyor belt 5, the third pressure roller 9 can clamp and stabilize the split silicon steel sheet near the second conveyor belt 5, and ensure that the end of the split silicon steel sheet remains horizontal when it extends out of the guide table 3 until it moves to the top surface of the second conveyor belt 5, effectively achieving the purpose of enhancing the punching and shearing quality of the silicon steel sheet and improving punching and shearing efficiency.

[0049] In this technical solution, the punching and shearing machine 6 can be a common hydraulic punching and shearing machine 6. It is a conventional design to install it in the gantry frame 4 for punching and shearing, and will not be described in detail.

[0050] Furthermore, the top surface of the guide table 3 is integrally formed with a slope on the side near the punching and shearing table 2, and the high end of the slope extends to the top surface of the punching and shearing table 2, with the second pressure roller 8 connected to the low end of the slope.

[0051] The inclined slope formed on the guide table 3 allows the silicon steel sheet to move to the position of the second pressure roller 8 after cutting by gravity. The second pressure roller 8 and the inclined slope form a guide channel with an inner diameter that decreases from large to small, which enhances the guiding and conveying effect on the split silicon steel sheet.

[0052] Furthermore, it also includes:

[0053] A pair of first baffles 10 are fixedly connected to each other on both sides of the top surface of the guide table 3. The first baffles 10 are respectively provided with a second drive assembly connected to the second pressure roller 8 and a third drive assembly connected to the third pressure roller 9.

[0054] The conveyor table 11 is placed on the side of the punching and shearing table 2 away from the guide table 3. The top surface of the conveyor table 11 is movably fitted with the first conveyor belt 1. The top surface of the first conveyor belt 1 is flush with the top surface of the punching and shearing table 2. A pair of second baffles 12 are fixed to opposite sides of the top surface of the conveyor table 11.

[0055] The guide table 3 has a groove on the side away from the punching and shearing table 2. The second conveyor belt 5 is movably fitted in the groove, and the top surface of the second conveyor belt 5 is flush with the top surface of the guide table 3.

[0056] By setting the first baffle 10 and the second baffle 12 to block the two sides of the conveyor table 11 and the guide table 3, the silicon steel sheets are prevented from falling. At the same time, the first conveyor belt 1 installed on the conveyor table 11 is used to transport the silicon steel sheets to the top surface of the punching and shearing table 2. The split silicon steel sheets after punching and shearing are stably moved to the second conveyor belt 5 for transportation by the guidance of the second pressure roller 8 and the third pressure roller 9.

[0057] Furthermore, the first drive component includes:

[0058] A pair of first sliders 13, and the gantry frame 4 has first sliding grooves on opposite sides, and the pair of first sliders 13 are respectively limited and slidably connected in the two first sliding grooves;

[0059] The first connecting rod 14 is mounted and fixed between a pair of first sliders 13. The two ends of the first pressure roller 7 are respectively connected to the pair of first sliders 13, and the top end of the first pressure roller 7 does not contact the first connecting rod 14.

[0060] The first drive motor 15 is fixedly connected to any one of the first sliders 13, and the output shaft of the first drive motor 15 is coaxially fixedly connected to the first pressure roller 7.

[0061] The servo cylinder 16 is fixedly connected to the inner wall of the top of the first slide groove, and the piston rod of the servo cylinder 16 extends vertically downward and is fixedly connected to the first connecting rod 14.

[0062] The first drive motor 15 drives the first pressure roller 7 to rotate, and the first connecting rod 14 fixes a pair of first sliders 13 to ensure the rotational stability of the first pressure roller 7. At the same time, the servo cylinder 16 drives the first connecting rod 14 and the first sliders 13 to rise and fall, so that the first pressure roller 7 can be adaptively adjusted according to the thickness of the silicon steel sheet.

[0063] Furthermore, the second drive component includes:

[0064] A pair of second sliders 17 and a pair of first baffles 10 are each provided with a second sliding groove, and the pair of second sliders 17 are respectively slidably connected in the two second sliding grooves;

[0065] The second connecting rod 18 is mounted and fixed between a pair of second sliders 17. The two ends of the second pressure roller 8 are respectively connected to a pair of second sliders 17. The top end of the second pressure roller 8 does not contact the second connecting rod 18.

[0066] The second drive motor 19 is fixedly connected to any one of the second sliders 17, and the output shaft of the second drive motor 19 is coaxially fixedly connected to the second pressure roller 8.

[0067] The telescopic rod 20 is fixed to the inner wall of the top of the second slide groove. The telescopic end of the telescopic rod 20 extends vertically downward and is fixed to the second connecting rod 18. A support spring 21 is wrapped around the telescopic rod 20. The two ends of the support spring 21 abut against the second connecting rod 18 and the top of the second slide groove, respectively.

[0068] The second drive motor 19 drives the second pressure roller 8 to rotate, while the second connecting rod 18 connects and stabilizes a pair of second sliders 17. A support spring 21 is provided around the telescopic rod 20. The two work together to provide elastic support to the second connecting rod 18, so that the second pressure roller 8 forms an elastic tendency to face downward.

[0069] In this technical solution, the second pressure roller 8 differs from the first pressure roller 7 in that the first pressure roller 7 adjusts its height through a servo cylinder 16 to press the thickness of the silicon steel sheet, while the second pressure roller 8 guides the split silicon steel sheet. Since the tilt angle of the split silicon steel sheet when passing through the slope will cause the position of entering the second pressure roller 8 to be different, the second pressure roller 8 is elastically supported by a telescopic rod 20 and a support spring 21, which can effectively guide the split silicon steel sheet.

[0070] Specifically, the telescopic rod 20 can adopt a common sliding connection structure. In order to provide support stability for the second connecting rod 18, two sets of telescopic rod 20 and support spring 21 are provided and arranged on opposite sides of the top of the second connecting rod 18.

[0071] Furthermore, the third drive component includes:

[0072] Two support rods 22 are fixedly connected to each other on the adjacent sides of a pair of first baffles 10. A sleeve 23 is elastically connected to the support rod 22. A fixing rod 24 is fixedly connected to the outer wall of the sleeve 23. The fixing rod 24 extends downwards towards the second conveyor belt 5.

[0073] The adapter 25 is fixed to the side of the fixed rod 24 near the second conveyor belt 5, and the two ends of the third pressure roller 9 are respectively connected to the two adapters 25 arranged opposite to each other;

[0074] The third drive motor 26 is fixedly connected in any adapter 25, and the output shaft of the third drive motor 26 is coaxially fixedly connected to the third pressure roller 9.

[0075] A sleeve 23 is fitted over the support rod 22, and the sleeve 23 is elastically connected to the support rod 22. A fixing rod 24 is also elastically connected to the support rod 22. The third drive motor 26 drives the third pressure roller 9 to rotate, and the fixing rod 24 extends towards the second conveyor belt 5, enabling the third pressure roller 9 to effectively stabilize the split silicon steel sheets. After detaching from the third pressure roller 9, the split silicon steel sheets are conveyed by the second conveyor belt 5.

[0076] Furthermore, a torsion spring 27 is wound around the support rod 22, and a slot is opened on the side of the sleeve 23 near the support rod 22. The slot covers the support rod 22, and the two ends of the torsion spring 27 are fixedly connected to the support rod 22 and the sleeve 23 respectively.

[0077] The sleeve 23 is elastically connected to the support rod 22 by the torsion spring 27, maintaining the spring tendency of the sleeve 23, and causing the third pressure roller 9 to form an elastic tendency toward the punching and shearing table 2.

[0078] Furthermore, several pressure rollers 28 are coaxially fixed to the first pressure roller 7, the second pressure roller 8, and the third pressure roller 9.

[0079] Specifically, the pressure roller 28 can be a common rubber roller.

[0080] The working principle of the transformer core silicon steel sheet punching and shearing device of this utility model is as follows:

[0081] Silicon steel sheets are conveyed to the punching and shearing table 2 via the first conveyor belt 1. The first pressure roller 7 presses and conveys the silicon steel sheets. The height of the first pressure roller 7 is adjusted by the servo cylinder 16 to ensure the stability of the silicon steel sheets. The punching and shearing machine 6 punches and cuts the conveyed silicon steel sheets, causing the split silicon steel sheets to move along the slope to the second pressure roller 8. The second pressure roller 8 is elastically supported by the telescopic rod 20 and the support spring 21, and is used for guiding and conveying. After the rotation of the second pressure roller 8, the silicon steel sheets are conveyed to the third pressure roller 9. By elastically connecting the fixed rod 24 and the support rod 22, when the silicon steel sheets move to the bottom of the third pressure roller 9, the elastic action of the torsion spring 27 presses the silicon steel sheets. As the third pressure roller 9 rotates, the split silicon steel sheets move to the top of the second conveyor belt 5, completing the stable punching and shearing process of the silicon steel sheets and improving the punching and shearing quality.

[0082] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0083] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A punching and shearing device for transformer core silicon steel sheets, characterized by, include: The first conveyor belt (1), the punching and shearing table (2), the guide table (3), and the second conveyor belt (5) are set up sequentially along the production direction; A gantry frame (4) is erected above the punching and shearing table (2), and a punching and shearing machine (6) is movably fitted inside the gantry frame (4); The first pressure roller (7) is rotatably connected to the punching and shearing table (2) and located on the side of the punching and shearing machine (6) close to the first conveyor belt (1). The punching and shearing table (2) is provided with a first drive assembly. The drive end of the first drive assembly is connected to the first pressure roller (7) so that there is an adjustable gap between the first pressure roller (7) and the punching and shearing table (2). The second pressure roller (8) is rotatably connected to the guide table (3). The second pressure roller (8) is arranged on the top surface of the guide table (3) near the punching and shearing table (2). The second pressure roller (8) has an elastic tendency toward the top surface of the guide table (3). The third pressure roller (9) is rotatably connected to the guide table (3). The third pressure roller (9) is arranged on the top surface of the guide table (3) near the second conveyor belt (5). The third pressure roller (9) has an elastic tendency toward the top surface of the guide table (3).

2. The transformer core silicon steel sheet punching and shearing device according to claim 1, characterized in that: The top surface of the guide table (3) is integrally formed with a slope on the side near the punching and shearing table (2), the high end of the slope extends to the top surface of the punching and shearing table (2), and the second pressure roller (8) is connected to the low end of the slope.

3. The transformer core silicon steel sheet punching and shearing device according to claim 1, characterized in that, Also includes: A pair of first baffles (10) are fixedly connected to each other on both sides of the top surface of the guide table (3). The first baffles (10) are respectively provided with a second drive assembly connected to the second pressure roller (8) and a third drive assembly connected to the third pressure roller (9). A conveyor (11) is placed on the side of the punching and shearing table (2) away from the guide table (3). The top surface of the conveyor (11) is movably fitted with the first conveyor belt (1). The top surface of the first conveyor belt (1) is flush with the top surface of the punching and shearing table (2). A pair of second baffles (12) are fixed to opposite sides of the top surface of the conveyor (11). The guide table (3) has a groove on the side away from the punching and shearing table (2) on its top surface. The second conveyor belt (5) is movably fitted in the groove, and the top surface of the second conveyor belt (5) is flush with the top surface of the guide table (3).

4. The transformer core silicon steel sheet punching and shearing device according to claim 1, characterized in that, The first driving component includes: A pair of first sliders (13) are provided, and the gantry frame (4) is provided with first sliding grooves on opposite sides. The pair of first sliders (13) are respectively limited and slidably connected in the two first sliding grooves. The first connecting rod (14) is mounted and fixed between a pair of first sliders (13). The two ends of the first pressure roller (7) are respectively connected to a pair of first sliders (13), and the top end of the first pressure roller (7) does not contact the first connecting rod (14). The first drive motor (15) is fixedly connected to any one of the first sliders (13), and the output shaft of the first drive motor (15) is coaxially fixedly connected to the first pressure roller (7). A servo cylinder (16) is fixedly connected to the inner wall of the top of the first slide groove, and the piston rod of the servo cylinder (16) extends vertically downward and is fixedly connected to the first connecting rod (14).

5. The transformer core silicon steel sheet punching and shearing device according to claim 3, characterized in that, The second driving component includes: A pair of second sliders (17) and a pair of first baffles (10) are provided with second sliding grooves, and the pair of second sliders (17) are respectively slidably connected in the two second sliding grooves; The second connecting rod (18) is mounted and fixed between a pair of second sliders (17). The two ends of the second pressure roller (8) are respectively connected to a pair of second sliders (17). The top end of the second pressure roller (8) does not contact the second connecting rod (18). The second drive motor (19) is fixedly connected to any one of the second sliders (17), and the output shaft of the second drive motor (19) is coaxially fixedly connected to the second pressure roller (8); The telescopic rod (20) is fixed to the inner wall of the top of the second slide groove. The telescopic end of the telescopic rod (20) extends vertically downward and is fixed to the second connecting rod (18). A support spring (21) is wound around the telescopic rod (20). The two ends of the support spring (21) abut against the second connecting rod (18) and the top of the second slide groove, respectively.

6. The transformer core silicon steel sheet punching and shearing device according to claim 3, characterized in that, The third driving component includes: Two support rods (22) are fixedly connected to each other on the adjacent sides of a pair of first baffles (10). A sleeve (23) is elastically connected to the support rod (22). A fixing rod (24) is fixedly connected to the outer wall of the sleeve (23). The fixing rod (24) extends downwards towards the second conveyor belt (5). The adapter (25) is fixed to the side of the fixed rod (24) near the second conveyor belt (5), and the two ends of the third pressure roller (9) are respectively connected to the two adapters (25) arranged opposite to each other; The third drive motor (26) is fixedly connected in any of the adapters (25), and the output shaft of the third drive motor (26) is coaxially fixedly connected to the third pressure roller (9).

7. The transformer core silicon steel sheet punching and shearing device according to claim 6, characterized in that: The support rod (22) is wrapped with a torsion spring (27), and the sleeve (23) has a slot on the side near the support rod (22). The slot covers the support rod (22), and the two ends of the torsion spring (27) are fixedly connected to the support rod (22) and the sleeve (23) respectively.

8. The transformer core silicon steel sheet punching and shearing device according to claim 1, characterized in that: Several pressure rollers (28) are coaxially fixed to the first pressure roller (7), the second pressure roller (8) and the third pressure roller (9).

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