CN219004933U

CN219004933U - Stator laser welding mould

Info

Publication number: CN219004933U
Application number: CN202223467885.5U
Authority: CN
Inventors: 沈恩明; 沈以撒
Original assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Current assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Priority date: 2022-12-24
Filing date: 2022-12-24
Publication date: 2023-05-12
Anticipated expiration: 2032-12-24

Abstract

The utility model discloses a stator laser welding die which comprises an upper die (1) and a lower die (2), wherein a plurality of locating pins (3) which are buckled and connected with a stator core are arranged in the middle of the upper die (1) and the lower die (2), a plurality of extrusion screws (4) are connected with the middle of the upper die (1) in a threaded manner, a plurality of welding protection pieces (5) are arranged on the periphery of the upper die (1) and the periphery of the lower die (2), and the welding protection pieces (5) are positioned above welding seams or below welding seams of the stator core. The utility model has the characteristics of difficult damage and good positioning stability.

Description

Stator laser welding mould

Technical Field

The utility model relates to a stator processing tool, in particular to a stator laser welding die.

Background

The existing processing method for the stator core is to punch a sheet material to form a plurality of annular core pieces, axially laminate the core pieces, and then press-bond and shape the core pieces by laminating equipment. However, for the stator core of the large-size motor, because the core sheet cannot be formed by one-step stamping, manufacturers need to split the annular core sheet into a plurality of arc sections and stamp the arc sections respectively, and each arc section forms a welding groove at the edge; and then combining the arc-shaped sections into an iron core pattern and welding and forming the iron core pattern through welding equipment.

However, the existing welding device for the stator core has the defects that on one hand, the device needs to extrude the top and the bottom of the stator core through the extrusion die at the same time, and the welding seam formed after the welding of the stator core needs to be completely covered in the height direction, so that a welding gun can easily contact the extrusion dies at two ends in the welding process, and the extrusion die is damaged at the welding position. On the other hand, the extrusion die only extrudes from vertical direction through last mould and lower mould when fixing the iron core piece and spacing, and can't realize axial spacing to the iron core piece, leads to the iron core piece to appear dislocation, skew problem in installation and welding process, reduces the processingquality to stator core.

Therefore, the extrusion die in the conventional welding device has the problems of easy damage and poor positioning stability.

Disclosure of Invention

The utility model aims to provide a stator laser welding die. It has the characteristics of difficult damage and good positioning stability.

The technical scheme of the utility model is as follows: the utility model provides a stator laser welding mould, includes mould and lower mould on mutual lock connection, forms annular standing groove between last mould and the lower mould, and the edge all around of last mould and lower mould all is equipped with a plurality of welding protection pieces, and both sides welding protection piece is located stator core's welding seam top and welding seam below respectively.

In the foregoing stator laser welding mold, the welding protection member is made of red copper.

In the aforementioned stator laser welding mold, the upper mold and the lower mold are fastened with each other through mold cores, positioning grooves are formed in the upper mold and the lower mold, positioning pins are detachably connected to the mold cores, and two ends of each positioning pin are inserted into the positioning grooves of the upper mold and the lower mold respectively.

In the aforementioned stator laser welding mold, the inner sides of the upper mold and the lower mold are respectively provided with a placement hole, the positioning groove is positioned on the upper mold or the lower mold outside the placement holes, and one end of the mold core penetrates through the placement holes and is connected with the positioning groove through the fastening of the positioning pin.

In the stator laser welding mold, the positioning pin is slidably connected with the positioning groove of the upper mold.

In the aforementioned stator laser welding mold, the welding protection piece is fastened to the upper mold or the lower mold via a clamping groove, the outer end face of the welding protection piece is flush with the side wall of the upper mold or the lower mold, and the width of the outer end face of the welding protection piece is greater than the width of the welding seam.

Compared with the prior art, the welding protection piece is arranged, so that the upper die and the lower die can be protected in the welding process, and further damage caused by the fact that a welding object contacts the upper die and the lower die at the welding starting point and the end point is avoided; through the cooperation of the positioning groove and the positioning pin, on one hand, the relative positions among the upper die, the lower die and the die cores can be limited, and on the other hand, the positioning pin and the stator core can be mutually buckled, so that the limit of the stator core is realized, the stator core can be positioned in the horizontal direction and the height direction in the placing groove, and the positioning precision of each iron core is improved; through sliding connection between locating pin and the last mould constant head tank, then guarantee the pressfitting stability of last mould under the extrusion effect to improve the positioning effect to stator core. Therefore, the utility model has the characteristics of difficult damage and good positioning stability.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a top view of the present utility model.

The marks in the drawings are: 1-upper die, 2-lower die, 3-placing groove, 4-welding guard piece, 5-mold core, 6-positioning groove, 7-positioning pin and 8-placing hole.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

Examples. A stator laser welding mold is shown in fig. 1, and comprises an upper mold 1 and a lower mold 2 which are mutually buckled and connected, wherein the upper mold 1 and the lower mold 2 are respectively fixed on an extrusion mold of a welding device through bolt structures during installation, an annular placing groove 3 is formed between the upper mold 1 and the lower mold 2, a plurality of welding protection pieces 4 are respectively arranged at the peripheral edges of the upper mold 1 and the lower mold 2, and the welding protection pieces 4 at two sides are respectively positioned above a welding seam and below the welding seam of a stator core.

The welding guard 4 is made of red copper.

The upper die 1 and the lower die 2 are buckled with each other through a die core 5, positioning grooves 6 are formed in the upper die 1 and the lower die 2, positioning pins 7 are detachably connected to the die core 5, the number of the positioning pins 7 is one or more, the positioning pins 7 are distributed around the side wall of the die core 5 in an annular mode, the shape of each positioning pin 7 is long and is consistent with the length of the die core 5, and two ends of each positioning pin 7 are respectively inserted into the positioning grooves 6 of the upper die 1 and the lower die 2; an opening for the mold core 5 to pass through can be arranged in the extrusion mold; the stator embedded groove on the inner side of the stator core can be buckled with the positioning pin 7.

The inner sides of the upper die 1 and the lower die 2 are respectively provided with a placement hole 8, the positioning groove 6 is positioned on the upper die 1 or the lower die 2 outside the placement holes 8, and one end of the die core 5 penetrates through the placement holes 8 and is buckled and connected with the positioning groove 6 through the positioning pins 7.

The positioning grooves 6 of the upper die 1 are completely penetrated, so that the positioning pins 7 are connected between the positioning grooves 6 in a sliding way, and the upper die 1 can be lifted and lowered along the axial direction of the positioning pins 7 under the action of the extrusion die; the bottom of the lower die 2 is provided with a chassis, so that the end part of the die core 5 is mutually attached to the chassis after extrusion.

The welding protection piece 4 is connected with the upper die 1 or the lower die 2 through the clamping groove in a buckled mode, the outer end face of the welding protection piece 4 is flush with the side wall of the upper die 1 or the lower die 2, and the width of the outer end face of the welding protection piece 4 is larger than the width of a welding line.

The working principle of the utility model is as follows: when the vertical lifting mechanism is used, an operator firstly installs the upper die 1 and the lower die 2 on the extrusion die respectively, and then connects the upper die 1 and the lower die 2 with each other through the die core 5, so that the die core 5 can form sliding limit on the upper die 1, namely the vertical lifting function of the upper die 1 is realized. After the upper die 1, the lower die 2 and the die core 5 are buckled with each other, an operator stacks and forms each iron core plate in the placing groove 3, and the positioning pins 7 and the coil inserting grooves of the iron core plates are buckled with each other, so that each iron core plate in the circumferential direction is limited, and the welding grooves of the iron core plates after being arranged are all kept at the same circumferential position and are mutually aligned with the welding protection piece 4. After stator iron cores are arranged, the extrusion die drives the upper die 1 to extrude downwards, so that all iron core pieces are pressed together, and then the iron core pieces extend into a welding groove by welding equipment and are welded; when the iron chip is welded, the upper die 1 and the lower die 2 can be protected through the welding protective pieces 4 at the two ends, so that the damage caused by the contact of the die at the starting point and the end point of the welding groove is avoided, namely, the structural stability of the upper die 1 and the lower die 2 is ensured. When the stator core is welded, an operator only needs to withdraw the upper die 1 from the die core 5, and the welded stator core can be directly taken out.

Claims

1. The utility model provides a stator laser welding mould which characterized in that: including last mould (1) and lower mould (2) of mutual lock connection, form annular standing groove (3) between last mould (1) and the lower mould (2), all be equipped with a plurality of welding protection pieces (4) in the edge all around of last mould (1) and lower mould (2), both sides welding protection pieces (4) are located stator core's welding seam top and welding seam below respectively.

2. A stator laser welding die as defined in claim 1 wherein: the welding protection piece (4) is made of red copper.

3. A stator laser welding die as defined in claim 1 wherein: the upper die (1) and the lower die (2) are buckled with each other through a die core (5), positioning grooves (6) are formed in the upper die (1) and the lower die (2), positioning pins (7) are detachably connected to the die core (5), and two ends of each positioning pin (7) are respectively inserted into the positioning grooves (6) of the upper die (1) and the lower die (2).

4. A stator laser welding die according to claim 3, wherein: the inner sides of the upper die (1) and the lower die (2) are respectively provided with a placement hole (8), the positioning groove (6) is positioned on the upper die (1) or the lower die (2) outside the placement holes (8), and one end of the die core (5) penetrates through the placement holes (8) and is buckled with the positioning groove (6) through the positioning pin (7).

5. A stator laser welding die as described in claim 4, wherein: the locating pin (7) is connected with the locating groove (6) of the upper die (1) in a sliding mode.

6. A stator laser welding die as defined in claim 1 wherein: the welding protection piece (4) is connected with the upper die (1) or the lower die (2) through the clamping groove in a buckled mode, the outer end face of the welding protection piece (4) is level with the side wall of the upper die (1) or the side wall of the lower die (2), and the width of the outer end face of the welding protection piece (4) is larger than the width of a welding line.