High-speed punching rotor core rotary die

Abstract

The utility model relates to the technical field of rotary dies, in particular to a high-speed punching rotor iron core rotary die which comprises a die holder, a rotating groove is formed in the die holder, a rotating column is rotationally installed in the rotating groove, a rotating seat is installed at the upper end of the rotating column through a buffering assembly, and a plurality of oil storage barrels are installed on the die holder. A nozzle is connected to the oil storage barrel, a push plate is vertically and slidably mounted in the oil storage barrel in a sealed mode, a push rod is vertically and fixedly mounted on the lower surface of the push plate, a limiting assembly used for limiting one-way movement of the push rod is arranged in the oil storage barrel, and a transmission assembly used for driving the push rod to move upwards is arranged on the die holder. According to the utility model, lubricating oil can be continuously sprayed between the rotating seat and the die holder, so that the friction force between the rotating seat and the die holder is reduced, the rotation error generated in the high-speed rotation process of the die holder and the rotating seat is reduced, and the production quality of a rotor iron core is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary moulds, in particular to a high-speed rotary mould for punching rotor cores. Background Art

[0002] During the production and processing of the rotor core in the new energy vehicle motor, the rotor sheets need to be stacked and riveted into shape. After each rotor sheet is stamped, the mold needs to be rotated a certain angle before continuing to stack and stamp. The mold needs to complete 240 stampings per minute and the mold needs to be rotated once every 0.25 seconds. The existing rotary mold mainly consists of a mold base, a rotating seat, a drive device and a positioning column. The rotor sheet is installed on the rotating seat through the positioning column, and the rotating seat is driven to rotate by the drive device, thereby realizing the rotation of the rotor sheet.

[0003] However, when the rotating seat rotates on the mold base, in order to ensure the smooth rotation of the rotating seat, the rotation gap between the rotating seat and the mold base is very small, which will cause a large friction force between the rotating seat and the mold base during the rotation of the rotating seat. Under the influence of the friction force, the mold will produce errors during rotation, affecting the production quality of the rotor core. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: under the influence of friction, errors will be generated in the mold during rotation, affecting the production quality of the rotor core, and a high-speed rotor core rotating mold is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A high-speed rotor core rotary die comprises a die base, a rotating groove is formed on the die base, a rotating column is rotatably mounted in the rotating groove, a rotating seat is mounted on the upper end of the rotating column through a buffer assembly, and a positioning column is fixedly mounted on the upper end of the rotating seat;

[0007] The lower surface of the mold base is provided with a plurality of mounting holes that are all connected to the rotating groove, and an oil storage cylinder is fixedly installed in each of the mounting holes. The upper end of the oil storage cylinder extends into the rotating groove, and a nozzle is connected to the oil storage cylinder. A push plate is vertically and sealingly slidably installed in the oil storage cylinder, and a push rod is vertically fixedly installed on the lower surface of the push plate. A limiting component for limiting the unidirectional movement of the push rod is provided in the oil storage cylinder, and a transmission component for driving the push rod to move upward is provided on the mold base.

[0008] Preferably, a mounting groove is provided at the upper end of the rotating column, and the buffer assembly includes a buffer block slidably mounted in the mounting groove and a buffer spring fixedly mounted in the mounting groove, and one end of the buffer spring is fixedly connected to the buffer block.

[0009] Preferably, the limiting assembly includes a bracket fixedly installed in the oil storage cylinder and two push rods symmetrically mounted on the bracket through torsion springs. Multiple limiting grooves are opened on both sides of the push rod, and one end of the push rod is inserted into one of the limiting grooves.

[0010] Preferably, a movable hole connected to the mounting groove is provided on the lower surface of the mold base, and the transmission assembly includes a movable rod vertically slidably installed in the movable hole, a plurality of spring rods fixedly installed at the lower end of the movable rod, and a plurality of trapezoidal blocks respectively fixedly installed at one end of the plurality of spring rods, the upper end of the movable rod is fixedly connected to the buffer block, a plurality of sockets are provided on the push rod, the inclined surface of the trapezoidal block faces downward, and one end is inserted into one of the sockets.

[0011] Preferably, two oil outlet holes are provided on the side of the mold base and are both connected to the rotating groove. Oil guide grooves are fixedly installed in the two oil outlet holes. An oil collecting box is fixedly installed on the side of the mold base, and the oil collecting box is located directly below the two oil guide grooves.

[0012] Preferably, an oil filling pipe is connected to the side of the oil storage cylinder, and a sealing plug is inserted at one end of the oil filling pipe.

[0013] In the utility model, the beneficial effects are:

[0014] During the rotation of the mold, the buffer assembly, oil storage cylinder, nozzle, push plate, push rod and transmission assembly cooperate with each other to continuously spray lubricating oil between the rotating base and the mold base, thereby reducing the friction between the rotating base and the mold base, reducing the rotation error generated by the mold base and the rotating base during high-speed rotation, and improving the production quality of the rotor core;

[0015] The lubricating oil sprayed in the rotating groove can be recovered into the oil collecting box through the cooperation of the oil outlet hole and the oil guide groove, which plays a collection role, so as to facilitate the recycling and reuse of the lubricating oil and reduce the waste of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a high-speed rotor core rotary die proposed by the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the rotating seat and multiple oil storage cylinders;

[0018] Figure 3 It is a schematic diagram of a three-dimensional partial cross-section structure of a rotating seat and a buffer assembly;

[0019] Figure 4 It is a schematic diagram of a three-dimensional partial cross-section structure of an oil storage cylinder;

[0020] Figure 5 for Figure 2A magnified view of the structure at center A;

[0021] Figure 6 for Figure 3 A magnified view of the structure at point B in the middle;

[0022] Figure 7 for Figure 4 Enlarged view of the structure at point C in the middle.

[0023] In the figure: 1 mold base, 2 rotating column, 3 rotating seat, 4 positioning column, 5 oil storage cylinder, 6 nozzle, 7 push plate, 8 push rod, 9 buffer block, 10 buffer spring, 11 bracket, 12 push rod, 13 moving rod, 14 spring rod, 15 trapezoidal block, 16 oil guide groove, 17 oil collecting box, 18 oil filling pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figure 1-Figure 7 A high-speed rotor core rotary mold includes a mold base 1, a rotating groove is provided on the mold base 1, a rotating column 2 is rotatably installed in the rotating groove, a rotating seat 3 is installed on the upper end of the rotating column 2 through a buffer assembly, a positioning column 4 is fixedly installed on the upper end of the rotating seat 3, and a mounting groove is provided on the upper end of the rotating column 2. The buffer assembly includes a buffer block 9 slidably installed in the mounting groove and a buffer spring 10 fixedly installed in the mounting groove, and one end of the buffer spring 10 is fixedly connected to the buffer block 9.

[0026] A driving device for driving the rotating column 2 to rotate is installed on the die base 1, which is not shown in the figure. The rotating column 2 is installed on the rotating column 2 through the buffer block 9 and the buffer spring 10, and the rotor sheet is installed on the rotating seat 3 through the positioning column 4. During the stamping process, under the action of pressure, the rotating seat 3 will be driven to move vertically downward, and the buffer spring 10 will be compressed. Through the action of the buffer spring 10 and the buffer block 9, the stamping process of the rotor sheet is buffered, thereby reducing the blanking force borne by the rotating seat 3.

[0027] The lower surface of the mold base 1 is provided with multiple mounting holes that are all connected to the rotating groove. An oil storage cylinder 5 is fixedly installed in each of the multiple mounting holes. The upper end of the oil storage cylinder 5 extends into the rotating groove. A nozzle 6 is connected to the oil storage cylinder 5. A push plate 7 is vertically and sealingly slidably installed in the oil storage cylinder 5. A push rod 8 is vertically fixedly installed on the lower surface of the push plate 7. A limiting component for limiting the unidirectional movement of the push rod 8 is provided in the oil storage cylinder 5, and a transmission component for driving the push rod 8 to move upward is provided on the mold base 1.

[0028] The oil reservoir 5 is filled with lubricating oil, and the nozzle 6 is facing the inner wall of the rotating groove. When the push rod 8 is driven to move vertically upward by the transmission assembly, the push plate 7 will be driven to move vertically upward in the oil reservoir 5. During the movement of the push plate 7, the lubricating oil in the oil reservoir 5 will be sprayed between the rotating base 3 and the mold base 1 through the nozzle 6, thereby reducing the friction between the rotating base 3 and the mold base 1, reducing the rotation error generated by the mold base 1 and the rotating base 3 during high-speed rotation, and improving the production quality of the rotor core.

[0029] The limiting assembly includes a bracket 11 fixedly installed in the oil storage cylinder 5 and two push rods 12, both of which are symmetrically mounted on the bracket 11 through torsion springs. A plurality of limit grooves are provided on both sides of the push rod 8. One end of the push rod 12 is inserted in one of the limit grooves. Under the action of the torsion force of the torsion spring, the two push rods 12 tend to rotate toward the push rod 8. One end of the push rod 12 is inserted in the limit groove. Under the restriction of the push rod 12, the push rod 8 can only move upward, limiting the vertical downward movement of the push rod 8.

[0030] A movable hole connected to the mounting groove is provided on the lower surface of the mold base 1. The transmission assembly includes a movable rod 13 vertically slidably installed in the movable hole, a plurality of spring rods 14 fixedly installed at the lower end of the movable rod 13, and a plurality of trapezoidal blocks 15 respectively fixedly installed at one end of the plurality of spring rods 14. The upper end of the movable rod 13 is fixedly connected to the buffer block 9. A plurality of sockets are provided on the push rod 8. The inclined surface of the trapezoidal block 15 faces downward, and one end is inserted into one of the sockets.

[0031] The spacing between two adjacent sockets is just equal to the distance that the buffer block 9 moves each time. At the same time, the spacing between two adjacent limit grooves is just equal to the spacing between each two adjacent sockets. One end of the trapezoidal block 15 is inserted in the socket under the action of the elastic force of the spring rod 14. When the buffer block 9 moves vertically downward, it will drive the moving rod 13 to move vertically downward, thereby driving the trapezoidal block 15 to move vertically downward through the spring rod 14. When the trapezoidal block 15 moves vertically downward, it will drive the trapezoidal block 15 to move toward the spring rod 14. The spring rod 14 is compressed until the trapezoidal block 15 moves to the next socket and is inserted into the socket. When the buffer block 9 moves vertically upward under the action of the buffer spring 10, it will drive the push rod 8 to move vertically upward through the moving rod 13, the spring rod 14 and the trapezoidal block 15.

[0032] Two oil outlet holes are provided on the side of the mold base 1, both of which are connected to the rotating groove. Oil guide grooves 16 are fixedly installed in the two oil outlet holes. An oil collecting box 17 is fixedly installed on the side of the mold base 1. The oil collecting box 17 is located directly below the two oil guide grooves 16. The lubricating oil sprayed in the rotating groove will flow into the oil guide groove 16 through the oil outlet holes, and then drip onto the oil collecting box 17 through the oil guide groove 16, thereby collecting the lubricating oil, facilitating the recycling and reuse of the lubricating oil and reducing the waste of the lubricating oil.

[0033] An oil filling pipe 18 is connected to the side of the oil reservoir 5, and a sealing plug is inserted at one end of the oil filling pipe 18. When the lubricating oil in the oil reservoir 5 is used up, the two push rods 12 can be driven away from each other, releasing the effect on the push rod 8, and then lubricating oil is added to the oil reservoir 5 through the oil filling pipe 18. The sealing plug can prevent the lubricating oil from overflowing.

[0034] In the present invention, when the rotor sheet is stamped, the push rod 8 will be driven by the transmission assembly to move vertically upward, and then the push plate 7 will be driven to move vertically upward in the oil storage cylinder 5. During the movement of the push plate 7, the lubricating oil in the oil storage cylinder 5 will be sprayed between the rotating base 3 and the die base 1 through the nozzle 6, thereby reducing the friction between the rotating base 3 and the die base 1, reducing the rotation error generated by the die base 1 and the rotating base 3 during high-speed rotation, and improving the production quality of the rotor core.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-speed rotor core rotary die, comprising a die base (1), characterized in that: The mold base (1) is provided with a rotation groove, a rotation column (2) is rotatably mounted in the rotation groove, a rotation seat (3) is mounted on the upper end of the rotation column (2) via a buffer assembly, and a positioning column (4) is fixedly mounted on the upper end of the rotation seat (3); The lower surface of the mold base (1) is provided with a plurality of mounting holes all of which are connected to the rotating groove, and an oil storage cylinder (5) is fixedly installed in each of the mounting holes, the upper end of the oil storage cylinder (5) extends into the rotating groove, and a nozzle (6) is connected to the oil storage cylinder (5), and a push plate (7) is vertically and sealingly slidably installed in the oil storage cylinder (5), and a push rod (8) is vertically and fixedly installed on the lower surface of the push plate (7), and a limiting component for limiting the unidirectional movement of the push rod (8) is provided in the oil storage cylinder (5), and a transmission component for driving the push rod (8) to move upward is provided on the mold base (1).

2. A high-speed rotor core rotary die according to claim 1, characterized in that: The upper end of the rotating column (2) is provided with a mounting groove, and the buffer assembly comprises a buffer block (9) slidably mounted in the mounting groove and a buffer spring (10) fixedly mounted in the mounting groove, and one end of the buffer spring (10) is fixedly connected to the buffer block (9).

3. The high-speed rotor core rotary die according to claim 1, characterized in that: The limiting assembly comprises a bracket (11) fixedly mounted in the oil storage cylinder (5) and two push rods (12) symmetrically mounted on the bracket (11) via torsion springs. A plurality of limiting grooves are provided on both sides of the push rod (8), and one end of the push rod (12) is inserted into one of the limiting grooves.

4. The high-speed rotor core rotary die according to claim 2, characterized in that: The lower surface of the mold base (1) is provided with a movable hole connected to the mounting groove, and the transmission assembly includes a movable rod (13) vertically slidably mounted in the movable hole, a plurality of spring rods (14) fixedly mounted on the lower end of the movable rod (13), and a plurality of trapezoidal blocks (15) respectively fixedly mounted on one end of the plurality of spring rods (14). The upper end of the movable rod (13) is fixedly connected to the buffer block (9), and the push rod (8) is provided with a plurality of jacks. The inclined surface of the trapezoidal block (15) faces downward, and one end is inserted into one of the jacks.

5. The high-speed rotor core rotary die according to claim 1, characterized in that: The mold base (1) has two oil outlet holes on its side, both of which are connected to the rotating groove. An oil guide groove (16) is fixedly installed in the two oil outlet holes. An oil collecting box (17) is fixedly installed on the side of the mold base (1). The oil collecting box (17) is located directly below the two oil guide grooves (16).

6. The high-speed rotor core rotary die according to claim 1, characterized in that: An oil filling pipe (18) is connected to the side of the oil storage cylinder (5), and a sealing plug is inserted at one end of the oil filling pipe (18).

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