CN115890093B - Stator core automatic welding machine - Google Patents

Abstract

The present application relates to an automatic stator core welding machine, and relates to the technical field of stator core. It includes a working plate arranged on a frame, and the working plate is connected with a raw material sleeve for sleeve silicon steel sheets; a tightening column is arranged in the raw material sleeve, one end of the tightening column is connected with a first driving member, and the other end is connected with a tightening ring sleeve for pressing the silicon steel sheets. A lifting plate and a rotating plate are arranged on one side of the working plate in sequence, and a welding head is arranged on the rotating plate, and a second driving member for driving the lifting plate and a rotating driving member for driving the rotating plate are arranged on the other side of the working plate. First, the silicon steel sheets are neatly sleeved into the raw material sleeve, and then the tightening ring sleeve is screwed into the tightening column to the corresponding position, and then the first driving member is turned on to drive the tightening ring sleeve to press the silicon steel sheets, and the second driving member is turned on to indirectly drive the welding head to make a linear motion, and the rotating driving member is turned on to indirectly drive the welding head to rotate, so that the silicon steel sheets can be welded, thereby unifying and improving the welding accuracy, so that the qualified rate of the stator core is improved.

Description

Stator core automatic welding machine

Technical Field

The present application relates to the field of stator cores, and in particular to an automatic stator core welding machine.

Background Art

The stator is the stationary part of a motor or generator, and its main function is to generate alternating current.

The stator core is an important part of the stator. In order to reduce iron loss, the stator core must be made of thin silicon steel sheets with high resistivity and small hysteresis loop area, which are laminated after punching and insulation treatment. Generally, after the punched silicon steel sheets are laminated, welders are required to use welding machines to weld the laminated silicon steel sheets to complete the production of the stator core.

In the process of implementing the above-mentioned related technology, the inventors found that there are at least the following problems in this technology: When manually welding silicon steel sheets, due to differences in welder skills, the welding quality of the stator core will be uneven, which will in turn have a great impact on the pass rate of the stator core, so it needs to be improved.

Summary of the invention

In order to improve the qualification rate of stator cores, the present application provides a stator core automatic welding machine.

The present application provides a stator core automatic welding machine adopts the following technical solution:

A stator core automatic welding machine comprises a frame, a working plate is arranged on the frame, and a raw material sleeve for sleeve silicon steel sheets is connected to a side of the working plate away from the frame;

A clamping column is arranged in the raw material sleeve, and a first driving member for driving the clamping column to perform linear motion along its own axis is arranged on the side of the working plate close to the frame; a clamping ring sleeve for clamping the silicon steel sheet is threadedly connected to one end of the clamping column away from the first driving member;

A lifting plate is arranged on a side of the working plate away from the frame, and a second driving member for driving the lifting plate to perform linear motion along its own axis is connected to a side of the working plate close to the frame; a rotating plate is rotatably connected to a side of the lifting plate away from the frame, and a rotating driving member for driving the rotating plate to rotate around the axis of the lifting plate is connected to a side of the lifting plate close to the working plate; a welding head is connected to a side of the rotating plate away from the working plate.

By adopting the above technical scheme, the silicon steel sheets are first inserted into the outer wall of the raw material sleeve and aligned, and then the clamping ring is screwed into the clamping column to the corresponding position, and then the first driving member is turned on to drive the clamping ring to press the silicon steel sheets, and then the second driving member is turned on to drive the lifting plate to move linearly, and then drive the rotating plate and the welding head to move linearly; and the rotating driving member can be turned on to drive the rotating plate and the welding head to rotate, so as to realize the welding of the silicon steel sheets, thereby unifying and improving the welding accuracy, so that the qualified rate of the stator core is improved.

Optionally, a pressing cylinder for pressing the silicon steel sheet is provided on a side wall of the raw material sleeve away from the working plate.

By adopting the above technical solution, the pressing cylinder can be placed directly on the raw material sleeve, which is convenient and simple to install. At the same time, the tightening ring sleeve only needs to press the pressing cylinder, so the size of the tightening ring sleeve can be greatly reduced, so that the first driving member can drive the tightening column and the tightening ring sleeve smoothly and quickly.

Optionally, an outer wall of the raw material sleeve is provided with an adjustment ring sleeve for pressing the silicon steel sheet, and the adjustment ring sleeve is in close contact with the pressing cylinder.

By adopting the above technical scheme, when the specifications of the iron core are small, that is, the number of silicon steel sheets is small, resulting in a low overall height of the silicon steel sheets, there is a certain distance between the pressing cylinder and the silicon steel sheets, and the clamping ring sleeve cannot press the silicon steel sheets through the pressing cylinder; the adjusting ring sleeve can be first inserted into the outer wall of the raw material sleeve and press the silicon steel sheets, and then the pressing cylinder can be placed on the raw material sleeve, and the thickness of the adjusting ring sleeve is greater than or equal to the distance between the silicon steel sheets and the pressing cylinder, so that the side wall of the adjusting ring sleeve fits with the side wall of the pressing cylinder; then the first driving member can be driven to drive the clamping ring sleeve to press the pressing cylinder and the adjusting ring sleeve, thereby pressing the silicon steel sheets.

Optionally, the side wall of the raw material sleeve is connected to a limiting protrusion for limiting the rotation of the silicon steel sheet.

By adopting the above technical solution, after the silicon steel sheet is inserted into the raw material sleeve, the limiting protrusion can limit the rotation of the silicon steel sheet, thereby eliminating the need to manually adjust the position of the silicon steel sheet.

Optionally, the raw material sleeve is detachably connected to a limiting plate, and the limiting protrusion is connected to a side wall of the limiting plate away from the abutting column.

By adopting the above technical solution, different products may have different requirements for the welding position of silicon steel sheets, and the welding position of silicon steel sheets can be changed by replacing the limiting plates with different limiting protrusions.

Optionally, a side wall of the raw material sleeve away from the working plate is penetrated by a mounting notch for inserting the limit plate, and two opposite inner side walls of the mounting notch are connected with anti-slip protrusions for limiting the limit plate from slipping.

By adopting the above technical solution, when it is necessary to replace the limit plate with a different limit protrusion, the limit plate can be directly pulled out from the installation notch; after the limit plate is inserted into the installation notch, the anti-drop protrusion can limit the limit plate from moving in the direction away from the clamping column.

Optionally, a removal sleeve is provided on the outer wall of the raw material sleeve, and a passage groove for the limiting protrusion to pass through is provided on the side of the removal sleeve away from the working plate, and a third driving member for driving the removal sleeve to move linearly along its own axis is connected to the side of the working plate away from the raw material sleeve.

By adopting the above technical solution, after the silicon steel sheet is inserted into the raw material sleeve, the silicon steel sheet will fall on the removal sleeve. After the welding of the silicon steel sheet is completed, the third driving member is started to drive the removal sleeve to move away from the working plate, and then the welded silicon steel sheet part is pushed out of the raw material sleeve, making it convenient for the staff to take out the welded silicon steel sheet.

Optionally, a force applying rod is connected to the side wall of the tightening ring sleeve.

By adopting the above technical solution, the staff can quickly and conveniently install and remove the tightening ring sleeve by holding the force rod.

Optionally, there are at least two second driving members, and all of the second driving members are symmetrical about the axis center of the lifting plate.

By adopting the above technical solution, the second driving member can drive the lifting plate smoothly.

Optionally, a placement hole is formed through the side wall of the working plate, a guide sleeve is connected to the inner wall of the placement hole, a guide sleeve is slidably connected to a guide rod, one end of the guide rod close to the lifting plate is connected to the lifting plate, and the guide rod and the second driving member are symmetrical about the axis center of the lifting plate.

By adopting the above technical solution, when the second driving member drives the lifting plate to move, the guide rod and the second driving member cooperate with each other, which can further improve the stability of the movement of the lifting plate.

In summary, the present application includes at least one of the following beneficial effects:

1. The raw material sleeve is arranged on the working plate to facilitate the sleeve installation of silicon steel sheets, the first driving member is used to drive the clamping ring sleeve to press the silicon steel sheets, and the lifting plate, the rotating plate and the welding head are driven by the second driving member to make linear motion, and then the rotating driving member is used to drive the rotating plate and the welding head to make rotational motion, so as to realize automatic welding of silicon steel sheets, thereby unifying and improving the welding progress, thereby improving the qualified rate of the stator core;

2. By setting a limiting protrusion on the side wall of the raw material sleeve, the position of the silicon steel sheet can be limited when the silicon steel sheet is inserted into the raw material sleeve, and there is no need to arrange the silicon steel sheet for welding;

3. A force rod is connected to the side wall of the clamping ring sleeve, so that the force rod can be screwed into or out of the clamping column.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of an embodiment of the present application;

FIG2 is a schematic structural diagram showing the connection relationship between the third driving member and the material taking sleeve in the embodiment of the present application;

FIG3 is a schematic structural diagram showing the positional relationship between the adjusting ring sleeve and the limiting protrusion in the embodiment of the present application;

FIG4 is a schematic structural diagram showing the connection relationship between the second driving member and the lifting plate in the embodiment of the present application;

FIG5 is a schematic structural diagram showing the connection relationship between the rotary drive member and the lifting plate in an embodiment of the present application;

FIG6 is an enlarged view of point A in FIG1 ;

FIG. 7 is an enlarged view of point B in FIG. 2 .

In the figure: 1. Frame;

2. working plate; 21. third driving member; 22. first passage hole; 23. second driving member; 24. third passage hole; 25. placement hole; 26. guide sleeve; 27. guide rod; 28. fourth passage hole;

3. Raw material sleeve; 31. Limiting plate; 311. Limiting protrusion; 32. Pressing cylinder; 33. Adjusting ring sleeve; 331. Displacement groove; 34. Removal sleeve; 341. Displacement groove; 342. Mounting block; 35. Mounting notch; 351. Anti-slip protrusion;

4. abutting column; 41. a first driving member; 42. abutting ring sleeve; 421. a force application rod;

5. lifting plate; 51. second passage hole; 52. rotating driving member; 521. transmission gear; 53. fifth passage hole;

6. Rotating plate; 61. Ring rack; 7. Welding head; 8. Silicon steel sheet.

DETAILED DESCRIPTION

The present application is further described in detail below in conjunction with Figures 1-7.

The embodiment of the present application discloses a stator core automatic welding machine. Figures 1 to 7 are all in the state where the lifting plate is partially raised. Referring to Figure 1, Figure 1 is an exploded view that clearly shows the positional relationship between the pressure cylinder 32, the adjustment ring sleeve 33 and the tightening ring sleeve 42; the stator core automatic welding machine includes a frame 1 and a working plate 2 arranged on the frame 1, and the side of the working plate 2 away from the frame 1 is connected with a raw material sleeve 3 for sleeve silicon steel sheets 8. The side wall of the raw material sleeve 3 is detachably connected to a limiting plate 31, and one side of the limiting plate 31 is connected with a limiting protrusion 311 for limiting the rotation of the silicon steel sheet 8, and the limiting protrusion 311 cooperates with the groove opened on the inner wall of the silicon steel sheet 8. Under normal circumstances, in order to improve the starting performance of the motor and prevent the starting current of the motor from being too high, the industry usually welds the silicon steel sheet 8 obliquely, so the limiting plate 31 in this embodiment is inclined relative to the axis of the raw material sleeve 3.

Referring to Figures 1 and 2, Figure 2 is for clear display and does not show the silicon steel sheet 8, the pressing cylinder 32, the adjusting ring sleeve 33 and the tightening ring sleeve 42; a tightening column 4 is provided in the raw material sleeve 3, and a first driving member 41 for driving the tightening column 4 to make linear motion along its own axis is fixedly connected to the side of the working plate 2 close to the frame 1. The first driving member 41 in this embodiment is a hydraulic cylinder; the driving shaft of the first driving member 41 is fixedly connected to the tightening column 4. The end of the tightening column 4 away from the first driving member 41 is threadedly connected with a tightening ring sleeve 42 for pressing the silicon steel sheet 8, and the side wall of the tightening ring sleeve 42 is symmetrically connected with two force rods 421, which is convenient for the staff to screw the tightening ring sleeve 42 into or out of the raw material sleeve 3. A pressing cylinder 32 for pressing the silicon steel sheet 8 by its own weight is provided on the side wall of the raw material sleeve 3 away from the working plate 2, and then the first driving member 41 is driven to drive the clamping ring sleeve 42 to clamp the pressing cylinder 32, and then clamp the silicon steel sheet 8; and the silicon steel sheet 8 is indirectly compressed by the pressing cylinder 32, and pressing cylinders 32 of different specifications can be quickly replaced to press silicon steel sheets 8 of different outer diameters. At the same time, since the clamping ring sleeve 42 is not needed to directly compress the silicon steel sheet 8, the size of the clamping ring sleeve 42 can be reduced, thereby improving the running speed and stability of the clamping ring sleeve 42.

Referring to Fig. 1 and Fig. 3, the outer wall of the raw material sleeve 3 is sleeved with an adjustment ring sleeve 33 that relies on its own weight to press the silicon steel sheet 8; when the number of silicon steel sheets 8 is small, resulting in a certain distance between the silicon steel sheet 8 and the pressing cylinder 32, the adjustment ring sleeve 33 can be sleeved into the outer wall of the raw material sleeve 3, and then the pressing cylinder 32 is placed on the raw material sleeve 3, and the thickness of the adjustment ring sleeve 33 is greater than or equal to the distance between the silicon steel sheet 8 and the pressing cylinder 32, so that the side wall of the adjustment ring sleeve 33 fits the side wall of the pressing cylinder 32; then the first driving member 41 can be driven to drive the clamping ring sleeve 42 to press the pressing cylinder 32 and the adjustment ring sleeve 33, and then the silicon steel sheet 8 is pressed. The inner wall of the adjustment ring sleeve 33 is provided with a clearance groove 331 for the limiting protrusion 311 to pass through.

Referring to Figures 1 and 2, the outer wall of the raw material sleeve 3 is provided with a removal sleeve 34. After the silicon steel sheets 8 are inserted into the raw material sleeve 3, the removal sleeve 34 can support all the silicon steel sheets 8. The inner wall of the removal sleeve 34 is provided with a clearance groove 341 for the limiting protrusion 311 to pass through. The side of the working plate 2 away from the raw material sleeve 3 is connected with three third driving members 21 for driving the removal sleeve 34 to make linear motion along its own axis. The third driving member 21 in this embodiment is a cylinder, and the three third driving members 21 are symmetrical about the axis center of the removal sleeve 34, which can drive the removal sleeve 34 smoothly; when the silicon steel sheets 8 are welded, the third driving member 21 can push the removal sleeve 34 away from the working plate 2, and then push out the welded silicon steel sheets 8, so that the workers can take out the stator core conveniently. The side wall of the removal sleeve 34 is connected to three mounting blocks 342, and the three mounting blocks 342 are symmetrical about the axis center of the removal sleeve 34. The working plate 2 is penetrated by three first passage holes 22 for the driving shaft of the third driving member 21 to pass through. The driving shaft of the third driving member 21 extends out of the first passage hole 22 and is fixedly connected to the mounting block 342 at one end.

Referring to Figures 2 and 4, a lifting plate 5 coaxial with the raw material sleeve 3 is provided on the side of the working plate 2 away from the frame 1. A second passage hole 51 for the removal sleeve 34 to pass through is provided on one side of the lifting plate 5. Two second driving members 23 for driving the lifting plate 5 to move linearly along its own axis are connected to the side of the working plate 2 close to the frame 1. The second driving member 23 in this embodiment is an electric cylinder, and the two second driving members 23 are symmetrical about the axis center of the lifting plate 5, which can smoothly push and retract the lifting plate 5. Two third passage holes 24 for the driving shaft of the second driving member 23 are provided on one side of the working plate 2. One end of the driving shaft of the second driving member 23 extending out of the third passage hole 24 is fixedly connected to the lifting plate 5.

4 , two placement holes 25 are formed through the side wall of the working plate 2, and the inner wall of the placement hole 25 is connected with a guide sleeve 26. The guide sleeve 26 in this embodiment is a linear bearing, and the guide sleeve 26 is slidably connected with a guide rod 27. The end of the guide rod 27 close to the lifting plate 5 is fixedly connected to the lifting plate 5; the two guide rods 27 are symmetrical about the axis center of the lifting plate 5, and the two guide rods 27 and the two second driving members 23 are symmetrical about the axis center of the lifting plate 5, which can further improve the stability of the movement of the lifting plate 5.

Referring to Fig. 4 and Fig. 5, the side of the lifting plate 5 away from the frame 1 is rotatably connected to the rotating plate 6, the side of the rotating plate 6 close to the working plate 2 is fixedly connected to the ring-shaped rack 61, and the side of the lifting plate 5 close to the working plate 2 is connected to the rotating driving member 52 for driving the rotating plate 6 to rotate around the axis of the lifting plate 5. The rotating driving member 52 in this embodiment is a servo motor. The working plate 2 is penetrated with a fourth passage hole 28 for the rotating driving member 52 to pass through, and the side of the lifting plate 5 is penetrated with a fifth passage hole 53 for the driving shaft of the rotating driving member 52 to pass through. The end of the driving shaft of the rotating driving member 52 extending out of the fifth passage hole 53 is connected to a transmission gear 521 meshing with the ring-shaped rack 61. The side of the rotating plate 6 away from the working plate 2 is connected with three welding heads 7 symmetrical about the axis of the raw material sleeve 3, and the nozzles of the welding heads 7 point to the raw material sleeve 3.

When welding the silicon steel sheet 8 begins, the second driving member 23 is first turned on to drive the lifting plate 5 to reciprocate along its own axis, and can drive the rotating plate 6 to reciprocate along the axis of the lifting plate 5; the rotating driving member 52 can be turned on at the same time to drive the rotating plate 6 to rotate around its own axis, and then drive the welding head 7 to rotate around the axis of the rotating plate 6 to achieve oblique welding of the silicon steel sheet 8.

6 and 7, the side wall of the raw material sleeve 3 away from the working plate 2 is penetrated with an installation notch 35 for inserting the limit plate 31, and the two opposite inner side walls of the installation notch 35 are connected with anti-slip protrusions 351 for limiting the slipping of the limit plate 31. And the end wall of the limit protrusion 311 close to the working plate 2 is in contact with the inner bottom wall of the clearance groove 341. When the third driving member 21 drives the removal sleeve 34 to move in the direction away from the working plate 2, the limit plate 31 can be partially pushed out of the installation notch 35, which is convenient for the staff to replace the limit plate 31 with a different limit protrusion 311.

The implementation principle of the stator core automatic welding machine of the embodiment of the present application is as follows: first, a certain number of silicon steel sheets 8 are inserted into the outer wall away from the sleeve and the silicon steel sheets 8 are arranged, and then the clamping ring sleeve 42 is screwed into the clamping column 4 to the corresponding position, and then the first driving member 41 is driven to drive the clamping ring sleeve 42 to press the silicon steel sheets 8, and then the second driving member 23 is opened to drive the lifting plate 5, the rotating plate 6 and the welding head 7 to make a linear motion along the axis of the raw material sleeve 3; and the rotating driving member 52 is opened to drive the rotating plate 6 and the welding head 7 to make a rotational motion around the axis of the raw material sleeve 3, thereby realizing the welding of the silicon steel sheets 8. Compared with the low qualified rate of the stator core caused by manual welding of silicon steel sheets 8 in the related art, the present application can unify and improve the welding accuracy, thereby improving the qualified rate of the stator core.

The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (4)

1. A stator core automatic welding machine, characterized in that: it comprises a frame (1), a working plate (2) is arranged on the frame (1), and a raw material sleeve (3) for sleeve-mounting silicon steel sheets (8) is connected to a side of the working plate (2) away from the frame (1); A clamping column (4) is arranged in the raw material sleeve (3); a first driving member (41) for driving the clamping column (4) to move linearly along its own axis is arranged on a side of the working plate (2) close to the frame (1); a clamping ring sleeve (42) for clamping the silicon steel sheet (8) is threadedly connected to one end of the clamping column (4) away from the first driving member (41); A lifting plate (5) is arranged on a side of the working plate (2) away from the frame (1); a second driving member (23) for driving the lifting plate (5) to perform linear motion along its own axis is connected to a side of the working plate (2) close to the frame (1); a rotating plate (6) is rotatably connected to a side of the lifting plate (5) away from the frame (1); a ring-shaped rack (61) is fixedly connected to a side of the rotating plate (6) close to the working plate (2); a rotating driving member (52) for driving the rotating plate (6) to rotate around the axis of the lifting plate (5) is connected to a side of the lifting plate (5) close to the working plate (2); The driving member (52) is a servo motor; a fourth passage hole (28) is formed through the working plate (2) for the rotation driving member (52) to pass through; a fifth passage hole (53) is formed through one side of the lifting plate (5) for the driving shaft of the rotation driving member (52) to pass through; one end of the driving shaft of the rotation driving member (52) extending out of the fifth passage hole (53) is connected to a transmission gear (521) meshing with an annular rack (61); three welding heads (7) are connected to the side of the rotating plate (6) away from the working plate (2) and are symmetrical about the axis of the raw material sleeve (3); the nozzles of the welding heads (7) are directed toward the raw material sleeve (3); A pressing cylinder (32) for pressing the silicon steel sheet (8) is provided on the side wall of the raw material sleeve (3) away from the working plate (2); The outer wall of the raw material sleeve (3) is provided with an adjusting ring sleeve (33) for pressing the silicon steel sheet (8), and the adjusting ring sleeve (33) is in close contact with the pressing cylinder (32); The side wall of the raw material sleeve (3) is connected with a limiting protrusion (311) for limiting the rotation of the silicon steel sheet (8); The raw material sleeve (3) is detachably connected to a limiting plate (31), and the limiting protrusion (311) is connected to a side wall of the limiting plate (31) away from the abutting column (4); A mounting notch (35) for inserting the limiting plate (31) is formed through the side wall of the raw material sleeve (3) away from the working plate (2), and two opposite inner side walls of the mounting notch (35) are connected with anti-slip protrusions (351) for preventing the limiting plate (31) from slipping off; The outer wall of the raw material sleeve (3) is sleeved with a piece removal sleeve (34), and a side of the piece removal sleeve (34) away from the working plate (2) is provided with a clearance groove (341) for the limiting protrusion (311) to pass through, and a side of the working plate (2) away from the raw material sleeve (3) is connected to a third driving member (21) for driving the piece removal sleeve (34) to perform linear motion along its own axis; The stator core automatic welding machine is implemented as follows: first, a certain number of silicon steel sheets (8) are inserted into the outer wall away from the sleeve and the silicon steel sheets (8) are arranged, then the clamping ring sleeve (42) is screwed into the clamping column (4) to the corresponding position, and then the first driving member (41) is driven to drive the clamping ring sleeve (42) to press the pressing cylinder (32) and the adjusting ring sleeve (33), thereby pressing the silicon steel sheets (8), and then the second driving member (23) is turned on to drive the lifting plate (5), the rotating plate (6) and the welding head (7) to perform linear motion along the axis of the raw material sleeve (3); and the rotating driving member (52) is turned on to drive the rotating plate (6) and the welding head (7) to perform rotational motion around the axis of the raw material sleeve (3), thereby realizing the welding of the silicon steel sheets (8); when the silicon steel sheets (8) are welded, the third driving member (21) can push the removing sleeve (34) in a direction away from the working plate (2), thereby pushing out the welded silicon steel sheets (8). 2. The stator core automatic welding machine according to claim 1, characterized in that a force rod (421) is connected to the side wall of the tightening ring sleeve (42). 3. The stator core automatic welding machine according to claim 1 is characterized in that: there are at least two second driving members (23), and all the second driving members (23) are symmetrical about the axis center of the lifting plate (5). 4. The stator core automatic welding machine according to claim 1 is characterized in that: a placement hole (25) is formed through the side wall of the working plate (2), a guide sleeve (26) is connected to the inner wall of the placement hole (25), and a guide sleeve (26) is slidably connected to a guide rod (27), and one end of the guide rod (27) close to the lifting plate (5) is connected to the lifting plate (5), and the guide rod (27) and the second driving member (23) are both symmetrical about the axis center of the lifting plate (5).