A punching device for processing transformer core steel sheets

Abstract

This utility model relates to the field of punching, and more particularly to a punching device for processing steel sheets for transformer cores. It includes a workbench with two symmetrically arranged punching units on top. Each punching unit includes a punching module with a cross slide below it, which drives the punching module to move laterally and longitudinally. The punching module includes a base, which is L-shaped. A lower punching die is mounted on the horizontal part of the base, and a punch that engages with the lower punching die is mounted above it. The punch is mounted on a punching drive mechanism, which is mounted at the top of the vertical part of the base. The vertical part of the base has channels for the steel sheets to pass through. This utility model can achieve double punching of steel sheets in a single process, effectively improving production efficiency. Furthermore, the lateral and longitudinal spacing between the two holes can be adjusted via the slide, improving the applicability of the punching equipment.

Description

Technical Field

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

[0002] The iron core is the main magnetic circuit component of a transformer, and magnetic steel sheets such as silicon steel sheets are the main raw materials for processing transformer iron cores. These magnetic steel sheets are punched and sheared to produce transformer iron core materials that meet specific requirements. Currently, most machines used for punching steel sheets are single-punch machines. When faced with orders for iron core materials with double-punch structures, the two punches can only be processed sequentially (i.e., after processing one size of hole, another size is processed), resulting in low production efficiency and cumbersome processes. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a punching device for processing steel sheets for transformer cores. The technical solution adopted by this utility model is as follows:

[0004] This utility model provides a punching device for processing steel sheets for transformer cores, including a workbench with two symmetrically arranged punching units on top of the workbench; each punching unit includes a punching module with a cross slide below it, the cross slide driving the punching module to move laterally and longitudinally.

[0005] The punching module includes a base, which is L-shaped. A lower stamping die is provided on the horizontal part of the base. A punch that cooperates with the lower stamping die is provided above the lower stamping die. The punch is mounted on a stamping drive mechanism, which is mounted on the base. A channel for steel sheets to pass through is provided on the vertical part of the base.

[0006] Preferably, the cross slide includes an intermediate platform, a first lead screw, and a second lead screw; the intermediate platform is connected to the bottom of the machine base via a first track slider assembly above it, and the intermediate platform is connected to the workbench via a second track slider assembly below it, wherein the first track slider assembly and the second track slider assembly are arranged perpendicular to each other;

[0007] The first lead screw is located above the intermediate platform and is arranged parallel to the first track slider assembly. A first nut seat is connected to the first lead screw, and the first nut seat is installed at the bottom of the machine base. One end of the first lead screw is poweredly connected to a first motor, and the first motor is installed on the intermediate platform.

[0008] The second lead screw is located below the intermediate platform and is arranged parallel to the second track slider assembly. A second nut seat is connected to the second lead screw, and the second nut seat is installed at the bottom of the intermediate platform. One end of the second lead screw is powered by a second motor, and the second motor is installed on the workbench.

[0009] Preferably, the first track slider assembly is arranged parallel to the steel sheet conveying direction, and the second track slider assembly is arranged perpendicular to the steel sheet conveying direction.

[0010] Preferably, the stamping drive mechanism includes a third motor mounted on the top of the machine base. An eccentric wheel is fixed on the shaft of the third motor. A wheel sleeve is fitted on the outer side of the eccentric wheel. The wheel sleeve is connected to a spherical bearing at the end of the fisheye rod via a connecting rod. The spherical bearing at the end of the fisheye rod is rotatably connected to the punch seat. The punch seat is connected to the machine base via a vertically arranged third track slider assembly.

[0011] Preferably, the lower stamping die is disposed on a die holder, the die holder is mounted on the horizontal part of the machine base, the die holder is provided with a stepped hole that is matched with the lower stamping die, and the die holder is threaded with a locking screw, which abuts against the outer wall of the lower stamping die.

[0012] Preferably, a pressure plate is provided in the channel, the pressure plate is installed on the telescopic end of the cylinder, and the cylinder is installed in the hollow cavity of the vertical part of the machine base.

[0013] Preferably, a plastic pad is provided at the bottom of the channel.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This invention enables double punching of steel sheets in a single process, effectively improving production efficiency. Furthermore, the lateral and longitudinal spacing between the two holes can be adjusted via a slide table, enhancing the applicability of the punching equipment. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the main structure of the steel sheet punching device for processing transformer cores according to this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the punching module of this utility model;

[0019] Figure 3 This is a schematic diagram of the punching module of this utility model;

[0020] Figure 4 This is an exploded structural diagram of the cross slide table of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Punching unit; 201. Punching module; 201-1. Machine base; 201-2. Lower stamping die; 201-3. Punch; 201-4. Stamping drive mechanism; 201-4-1. Third motor; 201-4-2. Eccentric wheel; 201-4-3. Wheel sleeve; 201-4-4. Connecting rod; 201-4-5. Fisheye rod end spherical bearing; 201-4-6. Punch seat; 201-4-7. Third track slider assembly; 201-5. Channel; 201-6. 1. Mold base; 201-7. Stepped hole; 201-8. Locking screw; 201-9. Pressure plate; 201-10. Cylinder; 201-11. Pad plate; 202. Cross slide; 202-1. Intermediate platform; 202-2. First lead screw; 202-3. Second lead screw; 202-4. First track slider assembly; 202-5. Second track slider assembly; 202-6. First nut seat; 202-7. First motor; 202-8. Second nut seat; 202-9. Second motor; 3. Steel sheet. Detailed Implementation

[0022] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 and 2 As shown, this embodiment discloses a steel sheet punching device for processing transformer cores, including a workbench 1, with two symmetrically arranged punching units 2 above the workbench 1; the punching unit 2 includes a punching module 201, and a cross slide 202 is provided below the punching module 201, the cross slide 202 drives the punching module 201 to move laterally and longitudinally on the horizontal plane.

[0024] The punching module 201 includes a base 201-1, which is mounted on a cross slide 202. The base 201-1 is L-shaped. A lower punching die 201-2 is mounted on the horizontal part of the base 201-1, and the lower punching die 201-2 has a punching hole. A punch 201-3 is mounted above the lower punching die 201-2 to engage with it during the punching process. During the punching process, the punch 201-3 is inserted into the punching hole to complete the punching process of the steel sheet 3. The punch 201-3 is mounted on a punching drive mechanism 201-4, which is mounted on the base 201-1. The punching drive mechanism 201-4 drives the punch 201-3 to reciprocate up and down. A channel 201-5 for the steel sheet 3 to pass through is provided on the vertical part of the base 201-1. After being released by the unwinding mechanism, the steel sheet 3 is conveyed to the punching device through the conveyor roller group, and then enters through the through-hole channel 201-5. After being punched by two punching units 2, the steel sheet 3 is cut by the shearing equipment.

[0025] like Figure 2 and 3 As shown, the lower stamping die 201-2 is mounted on the die base 201-6. The die base 201-6 is mounted on the horizontal part of the machine base 201-1 by bolts. The die base 201-6 is provided with a stepped hole 201-7 that is inserted and matched with the lower stamping die 201-2. The die base 201-6 is threaded with a locking screw 201-8, which presses against the outer wall of the lower stamping die 201-2.

[0026] Both the mold base 201-6 and the machine base 201-1 have blanking clearance openings at the corresponding stamping hole positions on their horizontal parts. The stamped waste material falls from the stamping hole of the lower stamping mold 201-2 into the blanking clearance opening below, and finally falls to the bottom of the machine base 201-1.

[0027] In this embodiment, a pressure plate 201-9 is provided in the channel 201-5. The pressure plate 201-9 is installed on the telescopic end of the cylinder 201-10, which is installed in the hollow cavity of the vertical part of the base 201-1. During the punching process of the two punching units 2, the cylinder 201-10 extends and drives the pressure plate 201-9 to press against the steel sheet 3, thereby improving the stability of the steel sheet 3 during the punching process.

[0028] In this embodiment, a plastic pad 201-11 is provided at the bottom of the channel 201-5. The steel sheet 3 slides over the pad 201-11, and the plastic pad 201-11 reduces the wear on the steel sheet 3 when it slides.

[0029] like Figure 3As shown, the stamping drive mechanism 201-4 includes a third motor 201-4-1 mounted on the top of the machine base 201-1. An eccentric wheel 201-4-2 is fixed to the shaft of the third motor 201-4-1. A wheel sleeve 201-4-3 is fitted onto the outer side of the eccentric wheel 201-4-2. The wheel sleeve 201-4-3 is connected to a fisheye rod end spherical bearing 201-4-5 via a connecting rod 201-4-4. The fisheye rod end spherical bearing 201-4-5 is rotatably connected to the punch holder 201-4-6 via a pin. The punch holder 201-4-6 is connected to the machine base 201-1 via a vertically arranged third track slider assembly 201-4-7. The punch 201-3 is mounted on the bottom of the punch holder 201-4-6. The third motor 201-4-1 drives the eccentric wheel 201-4-2 to rotate, which is converted into the up-and-down movement of the connecting rod 201-4-4. The connecting rod 201-4-4 drives the punch seat 201-4-6 to move up and down along the third track slider assembly 201-4-7, thereby realizing the stamping action of the bottom punch 201-3.

[0030] like Figure 1 and 4 As shown, the cross slide table 202 includes an intermediate platform 202-1, a first lead screw 202-2, and a second lead screw 202-3. The intermediate platform 202-1 has a frame structure with a hollowed-out section in the middle for material discharge clearance. The intermediate platform 202-1 is connected to the bottom of the machine base 201-1 through the first track slider assembly 202-4 above it, and the intermediate platform 202-1 is connected to the worktable 1 through the second track slider assembly 202-5 below it. The first track slider assembly 202-4 and the second track slider assembly 202-5 are arranged perpendicular to each other.

[0031] The first lead screw 202-2 is located above the intermediate platform 202-1 and is arranged parallel to the first track slider assembly 202-4. The first lead screw 202-2 is connected to the first nut seat 202-6, which is installed at the bottom of the machine base 201-1. One end of the first lead screw 202-2 is powered by the first motor 202-7, which is installed on the intermediate platform 202-1.

[0032] The second lead screw 202-3 is located below the intermediate platform 202-1 and is arranged parallel to the second track slider assembly 202-5. The second lead screw 202-3 is connected to the second nut seat 202-8, which is installed at the bottom of the intermediate platform 202-1. One end of the second lead screw 202-3 is powered by the second motor 202-9, which is installed on the workbench 1.

[0033] In this embodiment, the first track slider assembly 202-4 is arranged parallel to the steel sheet conveying direction, and the second track slider assembly 202-5 is arranged perpendicular to the steel sheet conveying direction.

[0034] It should be noted that the first track slider assembly 202-4, the second track slider assembly 202-5, and the third track slider assembly 201-4-7 have the same structure, all consisting of a slide rail and a slider. The slide rail and slider are existing technologies, and those skilled in the art can directly purchase and install existing products.

[0035] 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 device for processing steel sheets for transformer cores, characterized in that: The device includes a workbench (1), on which two symmetrically arranged punching units (2) are arranged; the punching unit (2) includes a punching module (201), and a cross slide (202) is arranged below the punching module (201), the cross slide (202) drives the punching module (201) to move laterally and longitudinally; The punching module (201) includes a base (201-1), which is L-shaped. A lower stamping die (201-2) is provided on the horizontal part of the base (201-1). A punch (201-3) is provided above the lower stamping die (201-2) for stamping cooperation. The punch (201-3) is mounted on a stamping drive mechanism (201-4), which is mounted on the base (201-1). A channel (201-5) for steel sheet to pass through is provided on the vertical part of the base (201-1).

2. The punching device for processing steel sheets of transformer cores according to claim 1, characterized in that: The cross slide (202) includes an intermediate platform (202-1), a first lead screw (202-2), and a second lead screw (202-3); the intermediate platform (202-1) is connected to the bottom of the machine base (201-1) through a first track slider assembly (202-4) above it, and the intermediate platform (202-1) is connected to the workbench (1) through a second track slider assembly (202-5) below it, and the first track slider assembly (202-4) and the second track slider assembly (202-5) are arranged perpendicular to each other; The first lead screw (202-2) is located above the intermediate platform (202-1) and is arranged parallel to the first track slider assembly (202-4). A first nut seat (202-6) is connected to the first lead screw (202-2). The first nut seat (202-6) is installed at the bottom of the machine base (201-1). One end of the first lead screw (202-2) is poweredly connected to the first motor (202-7). The first motor (202-7) is installed on the intermediate platform (202-1). The second lead screw (202-3) is located below the intermediate platform (202-1) and is arranged parallel to the second track slider assembly (202-5). A second nut seat (202-8) is connected to the second lead screw (202-3). The second nut seat (202-8) is installed at the bottom of the intermediate platform (202-1). One end of the second lead screw (202-3) is poweredly connected to the second motor (202-9). The second motor (202-9) is installed on the workbench (1).

3. The steel sheet punching device for processing transformer cores according to claim 2, characterized in that: The first track slider assembly (202-4) is arranged parallel to the steel sheet conveying direction, and the second track slider assembly (202-5) is arranged perpendicular to the steel sheet conveying direction.

4. The steel sheet punching device for processing transformer cores according to claim 1, characterized in that: The stamping drive mechanism (201-4) includes a third motor (201-4-1) mounted on the top of the machine base (201-1). An eccentric wheel (201-4-2) is fixed on the shaft of the third motor (201-4-1). A wheel sleeve (201-4-3) is fitted on the outer side of the eccentric wheel (201-4-2). The wheel sleeve (201-4-3) is connected to the fisheye rod end joint bearing (201-4-5) through a connecting rod (201-4-4). The fisheye rod end joint bearing (201-4-5) is rotatably connected to the punch holder (201-4-6). The punch holder (201-4-6) is connected to the machine base (201-1) through a vertically arranged third track slider assembly (201-4-7).

5. The steel sheet punching device for processing transformer cores according to claim 1, characterized in that: The lower stamping die (201-2) is mounted on the die base (201-6), which is installed on the horizontal part of the machine base (201-1). The die base (201-6) is provided with a stepped hole (201-7) that is inserted and matched with the lower stamping die (201-2). The die base (201-6) is threaded with a locking screw (201-8), which presses against the outer wall of the lower stamping die (201-2).

6. The steel sheet punching device for processing transformer cores according to claim 1, characterized in that: A pressure plate (201-9) is provided in the channel (201-5). The pressure plate (201-9) is installed on the telescopic end of the cylinder (201-10). The cylinder (201-10) is installed in the hollow cavity of the vertical part of the base (201-1).

7. The steel sheet punching device for processing transformer cores according to claim 1, characterized in that: A plastic pad (201-11) is provided at the bottom of the channel (201-5).

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