CN215879505U

CN215879505U - Progressive stamping die for motor iron core

Info

Publication number: CN215879505U
Application number: CN202122327465.6U
Authority: CN
Inventors: 谢梅
Original assignee: Ningbo Jian Xin Precision Mould Co ltd
Current assignee: Ningbo Jian Xin Precision Mould Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-02-22
Anticipated expiration: 2031-09-24

Abstract

The utility model provides a progressive stamping die for a motor iron core, which comprises an upper die base and a lower die base, wherein a blanking stamping die is arranged between the upper die base and the lower die base, the blanking stamping die comprises a blanking male die arranged on the upper die base and a blanking female die arranged on the lower die base, a stamping sub-die for stamping a middle tooth part on the iron core is arranged between the upper die base and the lower die base in a sliding manner along the Y-axis direction, and the stamping sub-die and the blanking stamping die are sequentially arranged along the X-axis direction; and the lower die base is provided with a driving mechanism for driving the stamping sub-die to slide. The progressive stamping die for the motor iron core disclosed by the utility model can be used for stamping iron cores of various sizes by only adopting one set of die, is high in production efficiency and can meet the requirement of mass production.

Description

Progressive stamping die for motor iron core

Technical Field

The utility model relates to the technical field of motor iron core processing equipment, in particular to a progressive stamping die for a motor iron core.

Background

The stator core splicing block of the servo motor is formed by splicing and welding a plurality of iron core splicing blocks punched by a stamping die. As shown in fig. 1 and 2, each core segment is formed by stacking a plurality of silicon steel sheets with a thickness of 0.5mm, both sides of the middle position of each core 1 are provided with corresponding middle teeth 1.1, and the middle teeth 1.1 at the middle position of the core segment formed after the cores 1 are stacked are in an inclined state, that is, the middle teeth 1.1 of each core 1 have different sizes.

In the prior art, the punching process of the iron core 1 is usually completed by one-time punching, that is, the punching of the middle tooth part 1.1 and the blanking of the finished product are completed by one-time punching, in the method, the corresponding punching dies are required to be manufactured according to respective sizes for each iron core 1 with different middle tooth parts 1.1, the iron cores 1 with various sizes are formed by manual stacking after being respectively punched, the processing efficiency is low in the method, the cost is always high, and the method is not favorable for batch processing production.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problem that in order to overcome the defects in the prior art, the utility model provides the progressive stamping die for the motor iron cores, which can stamp iron cores with various sizes by only adopting one set of die, has high production efficiency and can meet the requirement of mass production.

In order to solve the problems, the utility model provides a progressive stamping die for a motor iron core, which comprises an upper die base and a lower die base, wherein a blanking stamping die is arranged between the upper die base and the lower die base, the blanking stamping die comprises a blanking male die arranged on the upper die base and a blanking female die arranged on the lower die base, a stamping sub-die for stamping a middle tooth part on the iron core is arranged between the upper die base and the lower die base in a sliding manner along the Y-axis direction, and the stamping sub-die and the blanking stamping die are sequentially arranged along the X-axis direction; and the lower die base is provided with a driving mechanism for driving the punching sub-die to slide along the Y axis.

Compared with the prior art, the progressive stamping die has the following advantages:

in the structure of the progressive stamping die for the motor iron core, a stamping sub-die and a blanking stamping die are sequentially arranged between an upper die base and a lower die base along the moving direction (X-axis direction) of a stamping material belt, namely, the stamping material belt firstly enters the stamping sub-die to perform stamping forming of an intermediate tooth part in the moving process along the X axis, then the stamping material belt is continuously conveyed forwards to the position of the blanking stamping die along the X-axis direction, and when the stamping sub-die performs stamping processing of the intermediate tooth part on the stamping material belt at the next time, the stamping material belt which is stamped and formed by the previous intermediate tooth part realizes blanking stamping at the position of the blanking stamping die to complete stamping forming of one iron core; and before carrying out the punching next time in this in-process, can be according to the accurate Y axle direction position of adjusting punching press sub-mould of demand, in order to realize punching the middle tooth portion of the different sizes of department on the iron core, in whole punching process, along with upper die base, the die process of lower die base lasts the opening and shutting, the pay-off antedisplacement in cooperation punching press material area, and carry out accurate adjustment to the position of punching press sub-mould according to the machining size demand, realize continuous iron core stamping forming, need join in marriage corresponding punching press mould alone and carry out the punching press with traditional iron core of different middle tooth portion sizes and compare, unnecessary punching press mould has been saved, pile up in blanking die by oneself after the iron core is accomplished according to required size punching press in continuous punching process, do not need to pile up by hand again, effectively improve machining efficiency.

Furthermore, the driving mechanism comprises a lead screw, a lead screw nut and a driver for driving the lead screw to rotate, the lead screw nut is connected to the punching sub-die, the driver is connected to the lower die base, one end of the lead screw is connected with the output end of the driver, and the other end of the lead screw is matched in the lead screw nut. Through the rotation of driver drive lead screw in above-mentioned structure, the lead screw drives screw nut and moves towards driver one side to order about punching press submodule utensil and remove along the Y axle direction, along with the removal of punching press submodule utensil Y axle direction position, the middle tooth portion position of punching out on the iron core will change, realizes the punching of the iron core of different size requirements promptly.

As an improvement, a limiting baffle is arranged on the lower die holder and between the punching sub-die and the driver, a through hole for the lead screw to pass through is formed in the limiting baffle, and the inner wall of the through hole is in spiral fit with the lead screw. In the above-mentioned improvement structure, still set up a limit baffle on the die holder to the screw rod is kept away from the one end cooperation of driver and is passed behind the limit stop and the cooperation of screw nut, can improve the gliding stability of screw rod drive punching press submodule utensil on the one hand, and on the other hand, this limit baffle can also play the limiting displacement of the extreme position of punching press submodule utensil along the motion of Y axle direction.

Furthermore, the stamping sub-die comprises an upper stamping die and a lower stamping die, wherein a sub-die convex die is arranged on the upper stamping die, and a sub-die groove matched with the sub-die convex die is arranged on the lower stamping die; the stamping lower die is connected with the lower die base in a sliding mode along the Y-axis direction, and the stamping upper die is connected with the stamping lower die in a telescopic mode along the Z-axis direction; the screw nut is connected to the lower stamping die, the driver drives the screw to rotate, and the lower stamping die and the upper stamping die are driven by the screw nut to synchronously move towards the Y-axis direction. The stamping sub-die in the structure is simple in composition structure and convenient to control; and the driving end of the driving mechanism is connected to the lower stamping die, and the upper stamping die is driven to synchronously move while the lower stamping die moves.

And the stamping lower die is close to the middle of one end of the driver, a mounting hole extending along the Y-axis direction is formed in the middle of one end of the driver, the screw nut is connected to the opening end of the mounting hole, and one end, far away from the driver, of the screw extends into the mounting hole. In the above-mentioned improvement structure, connect screw-nut in the mounting hole of punching press lower mould to this mounting hole is located the middle part position of punching press lower mould, and when the lead screw rotated, the effort of effect on the punching press lower mould was more even, thereby more steady when ordering about whole punching press submodule utensil and sliding.

In a further improvement, a first guide rod extending downwards is arranged on the upper stamping die, and a first guide sleeve matched with the first guide rod is arranged on the lower stamping die; be equipped with the elasticity piece that resets between mould and the punching press lower mould in the punching press, during the die sinking the elasticity piece that resets is used for the drive mould up the upward movement in the punching press, until mould and die holder support mutually in the punching press and lean on. In the improved structure, the arrangement of the first guide rod and the first guide sleeve structure enables the punching sub-die to be more stable in die assembly, the position is accurate and not easy to shift, and therefore accurate punching forming of the middle tooth part on the iron core is better guaranteed; the setting of the elastic reset piece in addition makes when whole mould die sinking that upgrades, mould can be in time reset on the punching press, and the pay-off antedisplacement that the punching press material area can be smooth and easy.

And the lower die base is provided with a guide slide rail extending along the Y-axis direction, the guide slide rail is connected with a slide block in a sliding manner, and the lower end of the lower punching die is connected with the slide block. In the above-mentioned improvement structure, make whole punching press submodule utensil can be along smooth and steady slip of Y axle direction through the setting of direction slide rail and slider structure.

Preferably, the driver is a servo motor. A servo motor is selected as a driver for driving the screw rod to rotate in the structure, so that the control is convenient, and the driving force is more accurate and controllable.

And the upper die base is provided with a plurality of second guide sleeves matched with the second guide columns. In the improved structure, the second guide post and the second guide sleeve are arranged, so that when an upper die and a lower die plate are assembled or disassembled, the upper die and the lower die plate are accurate in linearity along the Z-axis direction, deviation cannot occur, and accurate matching of the blanking male die and the blanking female die is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of a motor core segment in the prior art.

Fig. 2 is a left side view in fig. 1.

Fig. 3 is a schematic structural view of a progressive stamping die for a motor core according to the present invention.

Fig. 4 is a schematic view of the sectional view a-a of fig. 3 rotated 90 ° counterclockwise.

Fig. 5 is a sectional view taken along line B-B in fig. 4.

Description of reference numerals:

1-iron core, 1.1-middle tooth part, 2-upper die holder, 3-lower die holder, 4-lead screw, 5-lead screw nut, 6-driver, 7-limit baffle, 8-upper punching die, 9-lower punching die, 10-sub die male die, 11-sub die groove, 12-first guide rod, 13-first guide sleeve, 14-guide slide rail, 15-second guide column, 16-second guide sleeve and 20-punching material belt.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that the terms "upper end", "lower end", "inner wall", "outer side wall", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. In addition, in the description of the present invention, the terms "first" and "second" are used for convenience of description and distinction, and have no specific meaning.

In the drawings, the X-axis direction refers to a moving direction of the press tape, the Y-axis direction refers to a horizontal direction perpendicular to the moving direction of the press tape, and the Z-axis direction refers to a mold opening/closing operation direction of the mold.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 3-5, the present invention provides a progressive stamping die for a motor iron core, which includes an upper die holder 2 and a lower die holder 3, wherein a blanking stamping die is disposed between the upper die holder 2 and the lower die holder 3, the blanking stamping die includes a blanking male die disposed on the upper die holder 2 and a blanking female die disposed on the lower die holder 3, and when a stamping material strip 20 enters the stamping station, a part of the stamping material strip that is dropped is an iron core 1; in the present embodiment, a punching sub-die for punching the intermediate teeth 1.1 on the iron core 1 is provided between the upper die base 2 and the lower die base 3 so as to be slidable in the Y-axis direction, as shown in fig. 1. In the progressive stamping die structure, a stamping sub-die and a blanking stamping die are sequentially arranged along the X-axis direction; namely, the stamping material belt 20 output from the feeding mechanism firstly enters a stamping sub-die to carry out stamping forming of the middle tooth part 1.1 in the stamping advancing process, then horizontally moves into a blanking stamping die to carry out stamping forming of the shape of the iron core 1, and the part fallen from the blanking is the formed iron core 1; in the progressive die, the lower die holder 3 is provided with a driving mechanism for driving the punching sub-die to slide along the Y axis, before the punching material strip 20 enters the punching sub-die for punching, the driving mechanism can drive the punching sub-die to slide along the Y axis direction to adjust the position, and after the position of the punching sub-die in the Y axis direction changes, the position of the blanking punching die does not change, namely the shape punching position of the iron core 1 does not change, so that the position of the middle tooth part 1.1 punched on the iron core 1 can be shifted, and according to the structural requirements of the iron core splicing block, the position of the middle tooth part 1.1 punched on the punching material strip 20 one by one can be shifted by a set angle, so that the iron core 1 assembly which is finally required is formed by sequentially stacking in the accommodating cavity of the blanking female die of the lower die holder 3, as shown in fig. 1 and 2. Therefore, the punch forming of the iron core 1 with various sizes of the intermediate tooth part 1.1 can be realized by only one pair of progressive punching dies, the machining efficiency is high, the punching dies with various specifications are omitted in the machining process, and the machining cost is reduced.

As shown in fig. 4 and 5, in this embodiment, the driving mechanism includes a lead screw 4, a lead screw nut 5, and a driver 6 for driving the lead screw 4 to rotate, the lead screw nut is connected to the stamping sub-mold, the driver 6 is connected to the lower mold base 3, one end of the lead screw 4 is connected to an output end of the driver 6, and the other end of the lead screw 4 is fitted in the lead screw nut 5, in this structure, the driver 6 can drive the lead screw 4 to rotate along its own axis, and in the process of continuous rotation of the lead screw 4, due to a thread guiding function outside the lead screw 4, the lead screw nut 5 can approach or move away from the position where the driver 6 is located, so as to realize that the whole stamping sub-mold moves towards the direction (Y-axis direction) of the driver 6. Specifically, in this embodiment, when the screw 4 rotates in the forward direction, the punching sub-die moves toward the driver 6, and when the screw 4 rotates in the reverse direction, the punching sub-die moves in a direction away from the driver 6 again until returning to the initial position on the lower die holder 3. In this embodiment, the preferred driver 6 is a servo motor with higher precision and more convenient control, so as to ensure the accurate control of the moving distance of the stamping sub-die each time.

In addition, in this embodiment, as shown in fig. 5, a limiting baffle 7 is disposed on the lower die holder 3 between the stamping sub-die and the driver 6, a through hole for the lead screw 4 to pass through is disposed on the limiting baffle 7, and an inner wall of the through hole is in screw fit with the lead screw 4, that is, an inner wall of the mounting hole on the limiting baffle 7 is also a screw hole matched with an outer wall of the lead screw 4.

More specifically, the stamping sub-die comprises an upper stamping die 8 and a lower stamping die 9, wherein a sub-die convex die 10 is arranged on the upper stamping die 8, and a sub-die groove 11 matched with the sub-die convex die 10 is arranged on the lower stamping die 9; the lower stamping die 9 is connected with the lower die holder 3 in a sliding manner along the Y-axis direction, and the upper stamping die 8 is connected with the lower stamping die 9 in a telescopic manner along the Z-axis direction (as for a specific telescopic structure, the specific telescopic structure is specifically unfolded hereinafter); the screw nut 5 is connected to the lower stamping die 9, the driver 6 drives the screw 4 to rotate, and the lower stamping die 9 and the upper stamping die 8 are driven by the screw nut 5 to synchronously move towards the Y-axis direction. In the structure, in order to guarantee that lead screw 4 can be more steady in the sub-mould moving process of drive punching press, the middle part of 9 nearly drivers one end of punching press lower mould is equipped with the mounting hole that extends along the Y axle direction, lead screw nut 5 connects the open end at the mounting hole, lead screw 4 keeps away from 6 one end of drivers and extends to in the mounting hole, connect lead screw nut 5 in the intermediate position of 9 punching press lower moulds in this structure, helical structure is more even when guaranteeing lead screw 4 rotatory along the actuating force effect of axial production on punching press lower mould 9, and is stable.

As shown in fig. 5, a first guide rod 12 extending downward is arranged on the upper stamping die 8, and a first guide sleeve 13 matched with the first guide rod 12 is arranged on the lower stamping die 9; be equipped with the elasticity piece that resets between mould 8 and the punching press lower mould 9 on the punching press, the elasticity piece that resets is used for the drive during the die sinking mould 8 up-moving on the punching press, mould 8 and upper die base 2 counterbalance lean on until the punching press. Specifically, as shown in 4, mould 8, punching press lower mould 9 are the rectangle structure in the punching press in this embodiment, consequently all are equipped with first guide post 12 in four angular position of mould in the punching press, and corresponding four angular position of punching press lower mould 9 all is equipped with the first uide bushing 13 with each 12 one-to-one sliding fit of first guide post, when guaranteeing the punching press submodule mould to open and shut the mould, the motion process of mould 8 has better stability in the punching press, improves the qualification rate of punching press middle tooth portion 1.1 on the iron core 1.

On the other hand, the elastic reset piece in the structure is preferably a spring, which is a conventional reset piece in the mold field, that is, a corresponding spring is arranged between the upper end surface of the lower stamping die 9 and the lower end surface of the upper stamping die 8, the upper stamping die 8 always has a tendency of moving upwards under the elastic force of the spring, the upper end surface of the upper stamping die 8 abuts against the lower end surface of the upper die base 2, in the mold closing process, the upper die base 2 moves towards the lower die base 3 to drive the upper stamping die 8 to move towards the lower stamping die 9, the elastic force of the spring is overcome until the sub-die male die 10 moves downwards into the sub-die groove 11, and the stamping of the stamping material strip 20 into the shape of the middle tooth portion 1.1 is realized; then the upper die holder 2 and the lower die holder 3 are opened, the stamping upper die 8 is reset to the position contacting with the upper die holder 2 under the action of a spring, the stamping material belt 20 moves forwards, then the stamping sub-die moves for a set distance along the Y-axis direction, and then the stamping die closing action is repeated; when the progressive stamping die is used for re-die assembly, the middle tooth part 1.1 is stamped at the position close to the back of the stamping material strip 20, the middle tooth part 1.1 is stamped and blanked through the blanking stamping die at the previous time on the stamping material strip 20, namely the stamping of the iron core 1 structure is completed, the progressive stamping die is continuously opened and closed, the feeding is continuously carried out in combination with the forward movement of the stamping material strip 20, the position of the stamping sub-die is adjusted according to design requirements before each die assembly, and finally the iron core split block is obtained in the blanking female die.

In the above structure, the sub-stamping die is slidably connected to the lower die holder, and means that the lower die holder 3 is provided with a guide rail 14 extending along the Y-axis direction, the guide rail 14 is slidably connected to a slider (not shown), and the lower end of the lower stamping die 9 is connected to the slider, as shown in fig. 4.

On the other hand, as shown in fig. 5, a plurality of second guide posts 15 are disposed on the lower die holder 3, a plurality of second guide sleeves 16 matched with the second guide posts 15 are disposed on the upper die holder 2, specifically, the upper die holder 2 and the lower die holder 3 are both rectangular, the second guide posts 15 are disposed at four angular positions of the lower die holder 3, and the second guide sleeves 16 slidably matched with the second guide posts 15 are disposed at four corresponding angular positions of the upper die holder 2, so that accurate linearity and stability are ensured in the opening and closing movement process of the upper die holder 2 and the lower die holder 3.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims

1. The utility model provides a motor core upgrades press die, includes upper die base (2) and die holder (3), be equipped with the blanking press die between upper die base (2) and die holder (3), the blanking press die is including setting up the blanking terrace die on upper die base (2) and the blanking die of setting on die holder (3), its characterized in that: a stamping sub-die used for stamping the middle tooth part (1.1) on the iron core (1) is arranged between the upper die holder (2) and the lower die holder (3) in a sliding manner along the Y-axis direction, and the stamping sub-die and the blanking stamping die are sequentially arranged along the X-axis direction; and the lower die holder (3) is provided with a driving mechanism for driving the punching sub-die to slide along the Y axis.

2. The progressive die for punching an iron core of an electric machine according to claim 1, wherein: the driving mechanism comprises a lead screw (4), a lead screw nut (5) and a driver (6) for driving the lead screw (4) to rotate, the lead screw nut is connected to the punching sub-die, the driver (6) is connected to the lower die holder (3), one end of the lead screw (4) is connected with the output end of the driver (6), and the other end of the lead screw (4) is matched with the lead screw nut (5).

3. The progressive die for punching an iron core of an electric machine according to claim 2, wherein: and the lower die holder (3) is provided with a limiting baffle (7) between the punching sub-die and the driver (6), the limiting baffle (7) is provided with a through hole for the lead screw (4) to pass through, and the inner wall of the through hole is in spiral fit with the lead screw (4).

4. The progressive die for punching an iron core of an electric machine according to claim 2, wherein: the stamping sub-die comprises an upper stamping die (8) and a lower stamping die (9), wherein a sub-die convex die (10) is arranged on the upper stamping die (8), and a sub-die groove (11) matched with the sub-die convex die (10) is arranged on the lower stamping die (9); the stamping lower die (9) is connected with the lower die holder (3) in a sliding mode along the Y-axis direction, and the stamping upper die (8) is connected with the stamping lower die (9) in a telescopic mode along the Z-axis direction; the screw nut (5) is connected to the lower stamping die (9), the driver (6) drives the screw (4) to rotate, and the lower stamping die (9) and the upper stamping die (8) are driven by the screw nut (5) to synchronously move towards the Y-axis direction.

5. The progressive die for punching an iron core of an electric machine according to claim 4, wherein: punching press lower mould (9) are nearly the middle part of driver (6) one end is equipped with the mounting hole that extends along the Y axle direction, screw nut (5) are connected at the open end of mounting hole, driver (6) one end is kept away from in lead screw (4) extends to in the mounting hole.

6. The progressive die for an electric machine core according to claim 4 or 5, wherein: a first guide rod (12) extending downwards is arranged on the upper stamping die (8), and a first guide sleeve (13) matched with the first guide rod (12) is arranged on the lower stamping die (9); be equipped with the elasticity piece that resets between mould (8) and punching press lower mould (9) in the punching press, during the die sinking elasticity piece that resets is used for the drive mould (8) up-going motion in the punching press is gone up mould (8) and upper die base (2) counterbalance and is leaned on in the punching press.

7. The progressive die for punching an iron core of an electric machine according to claim 5, wherein: the stamping die is characterized in that a guide sliding rail (14) extending along the Y-axis direction is arranged on the lower die base (3), a sliding block is connected onto the guide sliding rail (14) in a sliding manner, and the lower end of the stamping lower die (9) is connected with the sliding block.

8. The progressive die for an electric machine core according to any one of claims 2 to 5, wherein: the driver (6) is a servo motor.

9. The progressive die for punching an iron core of an electric machine according to claim 1, wherein: the lower die holder (3) is provided with a plurality of second guide posts (15), and the upper die holder (2) is provided with a plurality of second guide sleeves (16) matched with the second guide posts (15).