Stator main iron core stacking, positioning and pressing device and process thereof

Abstract

The invention discloses a stator main iron core stacking, positioning and pressing device and a process thereof.The stator main iron core stacking, positioning and pressing device comprises a loading and pressing platform and a punching sheet, an equal-height square box is arranged above the loading and pressing platform, a stacking disc is arranged above the equal-height square box, an oil press assembly is arranged above the loading and pressing platform, a pressing disc is arranged above the stacking disc, and the punching sheet is arranged above the oil press assembly. The four equal-height square boxes are arranged on the upper portion of the stacking disc, the jacks are arranged above the four equal-height square boxes and fixedly connected with the equal-height square boxes, the jacks are attached to the lower end of the stacking disc, the stacking, positioning and pressing device penetrates through the punching sheets through positioning columns to position the stacked punching sheets, the punching sheets are stacked in a multi-section mode, each section of stacked punching sheets is pre-pressed, and the punching sheets are stacked in a multi-section mode. The pressing effect between the laminated punching sheets is ensured, and the lamination effect of the main iron core of the stator is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stator main iron cores, and in particular to a stator main iron core stacking positioning and pressing device and a process thereof. Background Art

[0002] The stator core is part of the motor magnetic circuit. It is made of 0.5mm silicon steel sheets stacked together. The sheets are insulated to reduce eddy current losses. The inner circle of the silicon steel sheets of the stator core is punched with stator slots, and the windings are placed in the slots. The silicon steel sheet core is called a whole after stacking and fixed on the machine base. The stacking of the stator main core refers to the orderly stacking of the punching sheets into a uniform shape. When the stator core is pressed, it is generally assembled and pressed in the machine base. The end is assembled with compensation sheets, pressing rings, magnetic shielding, and pressing fingers. The operating space is small, and the heating and sol process is required after assembly and pressing.

[0003] The Chinese patent publication number is CN212163102U, and the authorization announcement date is December 15, 2020. A stator core end external stacking and clamping device is composed of a stacking disk, a clamping disk, a pad, a screw, a disc spring, a sleeve, a large washer, a thick washer, a small screw, and a positioning column. After all the parts are processed and installed as required, the positioning column is installed into the hole in the stacking disk and fixed. After all the pressure-loading parts are stacked and fixed, they are compressed by the clamping disk, screw, and disc spring. After being compressed to a certain pressure, they are lifted as a whole to the heating furnace for heating. The utility model is easy to operate, efficient, and versatile, and can be applied to the stator core lamination pressing and end heating sol process.

[0004] When pressing the punching sheets, the existing stacking positioning and pressing device directly stacks all the punching sheets at one time without pre-pressing the stacked punching sheets, which increases the difficulty of pressing, fails to ensure the pressing effect of the stacked punching sheets, reduces the stacking effect of the stator main core, and fails to meet the use requirements. Summary of the invention

[0005] The object of the present invention is to provide a stator main core stacking positioning and pressing device and a process thereof, so as to solve the problem proposed in the above background technology that the existing stacking positioning and pressing device directly stacks all the punching sheets at one time when pressing the punching sheets, does not pre-press the stacked punching sheets, increases the pressing difficulty, cannot ensure the pressing effect of the stacked punching sheets, reduces the stacking effect of the stator main core, and cannot meet the use requirements.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stator main core stacking positioning and clamping device, comprising a pressing platform and a punching sheet, an equal-height square box is arranged above the pressing platform, four equal-height square boxes are arranged, and the four equal-height square boxes are arranged equidistantly in a square shape above the pressing platform, a stacking disk is arranged above the equal-height square box, a hydraulic press assembly is arranged above the pressing platform, and the hydraulic press assembly is connected to the pressing platform by screws, the hydraulic press assembly is arranged at the center of the stacking disk, a clamping disk is arranged above the stacking disk, a connecting ring seat is arranged at the center of the lower end of the stacking disk, and the connecting ring seat is fixedly connected to the stacking disk, the connecting ring seat and the hydraulic press assembly are arranged correspondingly, a jack is arranged above the four equal-height square boxes, and the jack is fixedly connected to the equal-height square boxes, and the jack fits with the lower end of the stacking disk.

[0007] Preferably, a column is provided above the pressure loading platform, and the column is provided on one side of the stacking plate, a lifting groove is provided inside the column, a connecting column is provided inside the lifting groove, and the connecting column is slidably connected to the column, a cross beam plate is provided above the connecting column, and the cross beam plate and the connecting column are welded together, a suspension rope equipment assembly is provided below the cross beam plate, an installation groove is provided on the cross beam plate, a T-shaped connecting seat is provided above the cross beam plate, and the T-shaped connecting seat is connected to the suspension rope equipment assembly by screws, and the T-shaped connecting seat is slidably connected to the cross beam plate.

[0008] Preferably, a positioning column is provided above the stacking disk, and two positioning columns are provided, and the two positioning columns are provided at both ends of the stacking disk. The upper ends of the stacking disk and the positioning columns are provided with threaded holes, and the lower end of the positioning column is provided with a connecting head, and the connecting head and the positioning column are provided as a whole, and the connecting head and the threaded hole are provided correspondingly.

[0009] Preferably, a driving cavity is provided inside the pressurizing platform, a first gear and a second gear are provided inside the driving cavity, and the first gear and the second gear are rotatably connected to the pressurizing platform, the first gear is meshingly connected to the second gear, a connecting disk is provided at the lower end of the column, and the connecting disk is rotatably connected to the pressurizing platform, the connecting disk is fixedly connected to the column and the first gear, a first motor is provided on one side of the column, and the first motor is connected to the pressurizing platform by screws, and the output end of the first motor is connected to the second gear.

[0010] Preferably, a second motor is provided on one side of the cross beam plate, and the second motor is connected to the cross beam plate by screws, a first screw rod is provided inside the mounting groove, and one end of the first screw rod is connected to the output end of the second motor, the first screw rod is threadedly connected to the T-shaped connecting seat, and the first screw rod is rotatably connected to the cross beam plate.

[0011] Preferably, a third motor is provided at the bottom of the lifting slot, and the third motor is connected to the column by screws, a telescopic cavity is provided inside the connecting column, a nut member is provided at the lower end of the telescopic cavity, and the nut member is fixedly connected to the connecting column, a second screw rod is provided inside the telescopic cavity, and one end of the second screw rod is connected to the output end of the third motor, and the second screw rod and the nut member are threadedly connected.

[0012] Preferably, the cross-sections of the connecting columns and the lifting grooves are both isosceles trapezoidal, and balls are provided on the lower ends of the columns, the connecting columns and the two side walls of the T-shaped connecting seats. The balls are rollingly connected to the columns, the connecting columns and the T-shaped connecting seats, and the balls are in contact with the pressure loading platform, the columns and the crossbeam plate.

[0013] Preferably, a lead wire is provided at the lower end of the pressure plate, and four lead wires are provided, and the lead wires are closely connected to the pressure plate. The four lead wires are equidistantly arranged at the lower end of the pressure plate, and the length of the lead wire is set to be the same as the distance between the teeth of the stator main core and the yoke.

[0014] A process for stacking a stator main core positioning and pressing device comprises the following steps:

[0015] Step 1: Arrange four equal-height square boxes in a circle at equal distances on the pressure loading platform, and install jacks on top of the equal-height square boxes;

[0016] Step 2: Lift the compression plate and install it on a square box of equal height, and level the installed compression plate using a jack;

[0017] Step 3: Align the connector at the lower end of the positioning column with the threaded hole on the compression plate and screw it in to install the positioning column and the compression plate;

[0018] Step 4: Lift the punching sheet through the sling equipment assembly, pass it through the positioning column and stack it on the stacking plate. The burr direction of the punching sheet is consistent. The stator main core is stacked in multiple sections. Each stacked section is shaped and pre-pressed.

[0019] Step 5: When pre-pressing, first remove the positioning column, lift the clamping plate through the lifting rope equipment assembly to contact the top punching sheet, evenly place lead wires from the tooth part to the yoke part, and connect the clamping plate to the hydraulic press assembly. Turn on the hydraulic press assembly to apply tension to the clamping plate. Under the action of the tension, the clamping plate applies pressure to the stacked punching sheets to compress the stacked punching sheets;

[0020] Step 6: After pre-pressing is completed, measure the thickness of the lead wire, then remove and replace the top punch.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The device of the invention is provided with equal-height square boxes, jacks, positioning columns, threaded holes and connectors. The equal-height square boxes are arranged equidistantly on the pressure platform in a circle, and are supported from multiple positions of the stacking plate. The jacks adjust the height of the stacking plate to achieve leveling of the stacking plate, ensuring that the stator main core is stacked horizontally. The connector at the lower end of the positioning column is aligned with the threaded hole on the pressing plate and screwed in. The positioning column and the pressing plate are installed. The punching sheet passes through the positioning column to position the stacked punching sheet, thereby improving the stacking accuracy of the stator main core. Multiple positioning columns can also be connected to increase the length of the positioning column.

[0023] 2. The device of the invention is provided with a stacking plate, a pressing plate, a hydraulic press assembly and lead wires. The stacking plate supports the stacked punching sheets. The hydraulic press assembly is connected to the pressing plate. The hydraulic press assembly applies tension to the pressing plate and applies pressure to the stacked punching sheets to compress the stacked punching sheets. Lead wires are evenly distributed from the tooth part to the yoke part. The lead wires are compressed when they are pressed. After the pre-compression is completed, the thickness of the lead wires is measured, and the pressure is judged according to the thickness change of the lead wires.

[0024] 3. The device of the invention is provided with a column, a connecting column, a first motor, a cross beam, a second motor, an installation groove, a lifting rope equipment assembly, a T-shaped connecting seat, a first screw rod, a lifting groove, a third motor, a second screw rod, a nut piece, a first gear, a second gear and a connecting plate. The column, the connecting column and the cross beam plate constitute a lifting mechanism frame. The first motor drives the second gear to rotate. The first gear is meshed with the second gear. The column and the pressure loading platform are rotationally connected through the second gear and the connecting plate. As the second gear rotates, the column is driven to rotate horizontally. The second motor drives the first screw rod to rotate. The first screw rod is threadedly connected to the T-shaped connecting seat. As the first screw rod rotates, the lifting rope equipment assembly is driven to translate along the installation groove. The third motor drives the second screw rod to rotate. The second screw rod is threadedly connected to the nut piece. As the second screw rod rotates, the connecting column is lifted and lowered, and the height of the cross beam plate is changed. The lifting and loading are realized through the cooperation of the first motor, the second motor and the third motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a structural diagram of the connection between the stacked tray and the equal-height square box of the present invention;

[0027] Figure 3 This is a structural diagram of the connection between the connecting column and the upright column of the present invention;

[0028] Figure 4 It is a structural diagram of the connection between the suspension rope equipment assembly and the crossbeam plate of the present invention;

[0029] Figure 5 It is a connection relationship diagram of the column, the pressure loading platform and the connecting column of the present invention;

[0030] Figure 6 It is a front view of the connection between the stacking tray and the equal-height square box of the present invention;

[0031] Figure 7 This is a structural diagram of the connection between the positioning column and the stacking tray of the present invention;

[0032] Figure 8 It is a bottom view of the structure of the compression plate of the present invention.

[0033] In the figure: 1. pressure loading platform; 2. square box of equal height; 3. stacking plate; 4. punching plate; 5. clamping plate; 6. column; 7. connecting column; 8. first motor; 9. crossbeam plate; 10. second motor; 11. mounting groove; 12. lifting rope equipment assembly; 13. T-type connecting seat; 14. hydraulic press assembly; 15. positioning column; 16. ball bearing; 17. first screw rod; 18. lifting groove; 19. third motor; 20. second screw rod; 21. nut member; 22. telescopic chamber; 23. driving chamber; 24. first gear; 25. second gear; 26. connecting plate; 27. jack; 28. threaded hole; 29. ​​connector; 30. connecting ring seat; 31. lead wire. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figure 1-8, an embodiment of the present invention: a stator main core stacking positioning and pressing device, including a loading and pressing platform 1 and a punching sheet 4, an equal-height square box 2 is arranged above the loading and pressing platform 1, four equal-height square boxes 2 are arranged, and the four equal-height square boxes 2 are arranged in a square and equidistant manner above the loading and pressing platform 1, a stacking plate 3 is arranged above the equal-height square box 2, an oil hydraulic press assembly 14 is arranged above the loading and pressing platform 1, and the oil hydraulic press assembly 14 is connected to the loading and pressing platform 1 by screws, the oil hydraulic press assembly 14 is arranged at the center of the stacking plate 3, a pressing plate 5 is arranged above the stacking plate 3, a connecting ring seat 30 is arranged at the center of the lower end of the stacking plate 3, and the connecting ring seat 30 is fixedly connected to the stacking plate 3, the connecting ring seat 30 is arranged corresponding to the oil hydraulic press assembly 14, the upper part of the loading and pressing platform 1 A column 6 is provided on one side of the stacking disk 3, a lifting groove 18 is provided inside the column 6, a connecting column 7 is provided inside the lifting groove 18, and the connecting column 7 is slidably connected to the column 6, a cross beam plate 9 is provided above the connecting column 7, and the cross beam plate 9 and the connecting column 7 are welded together, a suspension rope equipment assembly 12 is provided below the cross beam plate 9, a mounting groove 11 is provided on the cross beam plate 9, a T-shaped connecting seat 13 is provided above the cross beam plate 9, and the T-shaped connecting seat 13 is connected to the suspension rope equipment assembly 12 by screws, and the T-shaped connecting seat 13 is slidably connected to the cross beam plate 9, and a jack 27 is provided above the four equal-height square boxes 2, and the jack 27 is fixedly connected to the equal-height square box 2, and the jack 27 is fitted with the lower end of the stacking disk 3.

[0036] When in use: four equal-height square boxes 2 are arranged equidistantly on the pressure loading platform 1, and a jack 27 is installed above the equal-height square boxes 2, and the pressing plate 5 is hoisted and installed on the equal-height square boxes 2, and the installed pressing plate 5 is leveled by the jack 27; the punching sheet 4 is hoisted and stacked on the stacking plate 3 by the lifting rope equipment assembly 12, and the burr direction of the punching sheet 4 is consistent. The stator main core is stacked in multiple sections, and each stacked section is shaped once and pre-pressed; during pre-pressing, The lifting rope device assembly 12 lifts the clamping plate 5 to contact the topmost punching plate 4, and connects the clamping plate 5 to the hydraulic press assembly 14. The hydraulic press assembly 14 is turned on to apply tension to the clamping plate 5. Under the action of the tension, the clamping plate 5 applies pressure to the stacked punching plates 4 to compress the stacked punching plates 4. The connecting column 7 is slidably connected to the column 6, and the T-shaped connecting seat 13 is slidably connected to the cross beam plate 9. The lifting operation is achieved by lifting the cross beam plate 9 and moving the lifting rope device assembly 12.

[0037] See also Figure 2 and Figure 7A positioning column 15 is arranged above the stacking disk 3. There are two positioning columns 15, and the two positioning columns 15 are arranged at both ends of the stacking disk 3. The upper ends of the stacking disk 3 and the positioning columns 15 are provided with threaded holes 28. A connecting head 29 is arranged at the lower end of the positioning column 15, and the connecting head 29 and the positioning column 15 are arranged as a whole. The connecting head 29 and the threaded hole 28 are arranged correspondingly. The connecting head 29 at the lower end of the positioning column 15 is aligned with the threaded hole 28 on the clamping disk 5 and screwed in to install the positioning column 15 and the clamping disk 5. According to the above method, multiple positioning columns 15 can be connected to increase the length of the positioning columns 15. The stacked punching sheets 4 pass through the positioning columns 15 to position the stacked punching sheets 4, thereby improving the stacking accuracy of the stator main core.

[0038] See also Figure 1 , Figure 3 , Figure 4 and Figure 5A driving chamber 23 is provided inside the pressure loading platform 1, a first gear 24 and a second gear 25 are provided inside the driving chamber 23, and the first gear 24 and the second gear 25 are rotatably connected to the pressure loading platform 1, the first gear 24 is meshed with the second gear 25, a connecting plate 26 is provided at the lower end of the column 6, and the connecting plate 26 is rotatably connected to the pressure loading platform 1, the connecting plate 26 is fixedly connected to the column 6 and the first gear 24, a first motor 8 is provided on one side of the column 6, and the first motor 8 is connected to the pressure loading platform 1 by screws, the output end of the first motor 8 is connected to the second gear 25, and a first motor 8 is provided on one side of the cross beam plate 9. A second motor 10 is provided, and the second motor 10 is connected to the cross beam 9 by screws, a first screw rod 17 is provided inside the mounting groove 11, and one end of the first screw rod 17 is connected to the output end of the second motor 10, the first screw rod 17 is threadedly connected to the T-shaped connecting seat 13, and the first screw rod 17 is rotatably connected to the cross beam 9, a third motor 19 is provided at the bottom of the lifting groove 18, and the third motor 19 is connected to the column 6 by screws, a telescopic cavity 22 is provided inside the connecting column 7, a nut member 21 is provided at the lower end of the telescopic cavity 22, and the nut member 21 is fixedly connected to the connecting column 7, and a second telescopic cavity 22 is provided inside The screw rod 20 is connected to the output end of the third motor 19, and one end of the second screw rod 20 is connected to the output end of the third motor 19, the second screw rod 20 is threadedly connected to the nut member 21, the cross-sections of the connecting column 7 and the lifting groove 18 are both isosceles trapezoidal, the lower end of the column 6, the connecting column 7 and the two side walls of the T-shaped connecting seat 13 are provided with balls 16, and the balls 16 are rollingly connected to the column 6, the connecting column 7 and the T-shaped connecting seat 13, the balls 16 are in contact with the pressure loading platform 1, the column 6 and the crossbeam plate 9, the first motor 8 drives the second gear 25 to rotate, the first gear 24 is meshed with the second gear 25, and the column 6 and the pressure loading platform 1 are connected by the first gear 24. The second gear 25 is rotatably connected with the connecting plate 26. As the second gear 25 rotates, the column 6 is driven to rotate horizontally. The second motor 10 drives the first screw rod 17 to rotate. The first screw rod 17 is threadedly connected to the T-shaped connecting seat 13. As the first screw rod 17 rotates, the lifting rope equipment assembly 12 is translated along the installation groove 11. The third motor 19 drives the second screw rod 20 to rotate. The second screw rod 20 is threadedly connected to the nut member 21. As the second screw rod 20 rotates, the connecting column 7 is lifted and lowered, and the height of the crossbeam plate 9 is changed. The first motor 8, the second motor 10 and the third motor 19 cooperate with each other to realize lifting and loading.

[0039] See also Figure 8A lead wire 31 is provided at the lower end of the clamping plate 5. There are four lead wires 31, and the lead wires 31 are closely connected to the clamping plate 5. The four lead wires 31 are equidistantly arranged at the lower end of the clamping plate 5, and the length of the lead wire 31 is the same as the distance between the tooth portion and the yoke portion of the stator main iron core. Four lead wires 31 are evenly distributed from the tooth portion to the yoke portion. The lead wire 31 is compressed when it is clamped and stressed. After the pre-compression is completed, the thickness of the lead wire 31 is measured, and the pressure is judged according to the thickness change of the lead wire 31.

[0040] A process for stacking a stator main core positioning and pressing device comprises the following steps:

[0041] Step 1: Arrange four equal-height square boxes 2 on the pressure loading platform 1 in a circumferentially equidistant manner, and install jacks 27 above the equal-height square boxes 2;

[0042] Step 2: Lift the compression plate 5 and install it on the square box 2 of equal height, and level the installed compression plate 5 by the jack 27;

[0043] Step 3: Align the connector 29 at the lower end of the positioning column 15 with the threaded hole 28 on the pressing plate 5 and screw it in, so as to install the positioning column 15 and the pressing plate 5;

[0044] Step 4: Lift the punching sheet 4 through the lifting rope equipment assembly 12, pass it through the positioning column 15 and stack it on the stacking plate 3. The burr direction of the punching sheet 4 is consistent. The stator main core is stacked in multiple sections. Each stacked section is shaped once and pre-pressed.

[0045] Step 5: When pre-pressing, first remove the positioning column 15, lift the clamping plate 5 through the lifting rope device assembly 12 to contact the top punching plate 4, evenly place four lead wires 31 from the tooth part to the yoke part, and connect the clamping plate 5 with the hydraulic press assembly 14, turn on the hydraulic press assembly 14 to apply tension to the clamping plate 5, and under the action of the tension, the clamping plate 5 applies pressure to the stacked punching plates 4 to compress the stacked punching plates 4;

[0046] Step 6: After the pre-pressing is completed, the thickness of the lead wire 31 is measured, and then the top punching sheet 4 is removed and replaced.

[0047] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stator main core stacking positioning and pressing device, comprising a pressing platform (1) and a punching sheet (4), characterized in that: A square box (2) of equal height is arranged above the pressure loading platform (1), and there are four square boxes (2) of equal height. The four square boxes (2) of equal height are arranged in a square shape and are equidistant above the pressure loading platform (1). A stacking plate (3) is arranged above the square boxes (2). A hydraulic press assembly (14) is arranged above the pressure loading platform (1), and the hydraulic press assembly (14) is connected to the pressure loading platform (1) by screws. The hydraulic press assembly (14) is arranged at the center of the stacking plate (3). A pressure plate (5) is arranged above the stacking plate (3), a connecting ring seat (30) is arranged at the center of the lower end of the stacking plate (3), and the connecting ring seat (30) is fixedly connected to the stacking plate (3), the connecting ring seat (30) is arranged corresponding to the hydraulic press assembly (14), and a jack (27) is arranged above the four equal-height square boxes (2), and the jack (27) is fixedly connected to the equal-height square boxes (2), and the jack (27) is in contact with the lower end of the stacking plate (3).

2. A stator main core stacking positioning and pressing device according to claim 1, characterized in that: A column (6) is arranged above the pressure loading platform (1), and the column (6) is arranged on one side of the stacking plate (3); a lifting groove (18) is arranged inside the column (6); a connecting column (7) is arranged inside the lifting groove (18), and the connecting column (7) is slidably connected to the column (6); a cross beam plate (9) is arranged above the connecting column (7), and the cross beam plate (9) and the connecting column (7) are welded together; a suspension rope device assembly (12) is arranged below the cross beam plate (9), and an installation groove (11) is arranged on the cross beam plate (9); a T-shaped connecting seat (13) is arranged above the cross beam plate (9), and the T-shaped connecting seat (13) is connected to the suspension rope device assembly (12) by screws, and the T-shaped connecting seat (13) and the cross beam plate (9) are slidably connected.

3. A stator main core stacking positioning and pressing device according to claim 2, characterized in that: A positioning column (15) is arranged above the stacking plate (3), two positioning columns (15) are arranged, and the two positioning columns (15) are arranged at both ends of the stacking plate (3), the upper ends of the stacking plate (3) and the positioning columns (15) are both provided with threaded holes (28), the lower ends of the positioning columns (15) are provided with connecting heads (29), and the connecting heads (29) and the positioning columns (15) are arranged as a whole, and the connecting heads (29) and the threaded holes (28) are arranged correspondingly.

4. A stator main core stacking positioning and pressing device according to claim 3, characterized in that: The pressurizing platform (1) is provided with a driving chamber (23) inside, and a first gear (24) and a second gear (25) are provided inside the driving chamber (23), and the first gear (24) and the second gear (25) are rotatably connected to the pressurizing platform (1), and the first gear (24) and the second gear (25) are meshingly connected, a connecting disk (26) is provided at the lower end of the column (6), and the connecting disk (26) is rotatably connected to the pressurizing platform (1), and the connecting disk (26) is fixedly connected to the column (6) and the first gear (24), a first motor (8) is provided on one side of the column (6), and the first motor (8) is connected to the pressurizing platform (1) by screws, and the output end of the first motor (8) is connected to the second gear (25).

5. A stator main core stacking positioning and pressing device according to claim 4, characterized in that: A second motor (10) is arranged on one side of the cross beam (9), and the second motor (10) is connected to the cross beam (9) by means of screws; a first screw rod (17) is arranged inside the mounting groove (11), and one end of the first screw rod (17) is connected to the output end of the second motor (10); the first screw rod (17) is threadedly connected to the T-shaped connecting seat (13), and the first screw rod (17) is rotatably connected to the cross beam (9).

6. A stator main core stacking positioning and pressing device according to claim 5, characterized in that: A third motor (19) is arranged at the bottom of the lifting groove (18), and the third motor (19) is connected to the column (6) by screws. A telescopic cavity (22) is arranged inside the connecting column (7), a nut member (21) is arranged at the lower end of the telescopic cavity (22), and the nut member (21) is fixedly connected to the connecting column (7). A second screw rod (20) is arranged inside the telescopic cavity (22), and one end of the second screw rod (20) is connected to the output end of the third motor (19), and the second screw rod (20) is connected to the nut member (21) by through-threaded connection.

7. A stator main core stacking positioning and pressing device according to claim 6, characterized in that: The cross-sections of the connecting column (7) and the lifting groove (18) are both isosceles trapezoidal, and balls (16) are provided on the lower ends of the columns (6), the connecting column (7) and the two side walls of the T-shaped connecting seat (13). The balls (16) are rollingly connected to the columns (6), the connecting column (7) and the T-shaped connecting seat (13), and the balls (16) are in contact with the pressure loading platform (1), the columns (6) and the crossbeam plate (9).

8. A stator main core stacking positioning and pressing device according to claim 7, characterized in that: A lead wire (31) is arranged at the lower end of the clamping plate (5), four lead wires (31) are arranged, and the lead wires (31) are closely connected to the clamping plate (5), the four lead wires (31) are arranged equidistantly at the lower end of the clamping plate (5), and the length of the lead wire (31) is arranged to be the same as the distance between the tooth portion and the yoke portion of the stator main iron core.

9. A process for stacking, positioning and pressing a stator main core according to claim 8, characterized in that: The following steps are involved: 。 Step 1: Arrange four equal-height square boxes (2) on the pressure loading platform (1) at equal intervals in a circle, and install jacks (27) above the equal-height square boxes (2); Step 2: Lift the compression plate (5) and install it on the square box (2) of the same height, and level the installed compression plate (5) by using a jack (27); Step 3: Align the connector (29) at the lower end of the positioning column (15) with the threaded hole (28) on the pressing plate (5) and screw it in, so as to install the positioning column (15) and the pressing plate (5); Step 4: Lift the punching sheet (4) through the sling equipment assembly (12) and pass it through the positioning column (15) to stack it on the stacking plate (3). The burr direction of the punching sheet (4) is consistent. The stator main core is stacked in multiple sections. Each stacked section is shaped and pre-pressed. Step 5: When pre-pressing, first remove the positioning column (15), lift the clamping plate (5) through the lifting rope device assembly (12) to contact the top punching plate (4), evenly place 4 lead wires (31) from the tooth part to the yoke part, and connect the clamping plate (5) to the hydraulic press assembly (14), turn on the hydraulic press assembly (14) to apply tension to the clamping plate (5), and under the action of the tension, the clamping plate (5) applies pressure to the stacked punching plates (4) to compress the stacked punching plates (4); Step 6: After the pre-pressing is completed, the thickness of the lead wire (31) is measured, and then the top punching sheet (4) is removed and replaced.

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