Stator core edge pressing machine

Abstract

The application relates to a stator core edge pressing machine and relates to the field of stator core processing. The machine comprises a rack, a workbench arranged on the rack, a contact assembly which can ascend and descend on the rack, and an upper pressing die which can ascend and descend on the rack. The upper pressing die is used for pressing the stator core. Driving element one for driving the upper pressing die to ascend and descend and driving element two for driving the contact assembly to ascend and descend are arranged on the rack. A mandrel is arranged on the workbench. The mandrel is used for adapting to the inner ring of the stator core. A supporting table which can ascend and descend is arranged on the rack. A boss is arranged on the workbench. The boss is located below the contact assembly. Driving element three for driving the supporting table to ascend and descend is arranged on the rack. The supporting table is lowered, so that the machine can be applicable to the processing of the stator core with a high height without changing the moving stroke of the contact assembly, and the applicability is improved. In addition, when the lower pressing die presses the stator core to descend, the mandrel extends into the inner ring of the stator core, and the coaxiality of the stator core is corrected.

Description

Technical Field

[0001] This application relates to the field of stator core processing, and in particular to a stator core pressing machine. Background Technology

[0002] The stator core is an important component that forms the magnetic flux circuit of the motor and fixes the stator coil. It is composed of laminations and various fasteners pressed together to form a whole.

[0003] The outer ring of the stator core has several clip slots for inserting clips with bent ends. When installing the clips, the clips are manually bent and inserted into the clip slots, and then a pressing machine is used to press the clips tightly to the end face of the stator core.

[0004] The edge-pressing machine in related technologies mainly includes a limiting platform, an upper pressing die, and an abutment. During operation, the stator core is first positioned on the limiting platform, aligning the position of the abutment with the position of the clip slot. The upper pressing die descends to press and fix the stator core. The abutment moves towards the upper pressing die, passing through the clip slot, so that the clip fits against the end face of the core. In actual processing, different models of stator cores have different clip lengths. When pressing different models of stator cores, the stroke of the abutment remains constant. However, when the height of the stator core exceeds the stroke of the abutment, some clips may not be pressed firmly against the end face of the stator core, indicating that the applicability of the edge-pressing machine needs improvement. Summary of the Invention

[0005] To improve the applicability of the edge pressing machine, this application provides a stator core edge pressing machine.

[0006] This application provides a stator core edge pressing machine, which adopts the following technical solution: A stator core pressing machine includes a frame, a worktable mounted on the frame, an abutment assembly that slides and rises on the frame, and an upper pressing die that slides and rises on the frame. The upper pressing die is used to press the stator core. The frame is provided with a first driving member for lifting the upper pressing die and a second driving member for lifting the abutment assembly. The worktable is provided with a mandrel that is adapted to fit the inner ring of the stator core. A support platform slides and rises on the frame to support the stator core. A boss is provided on the worktable, located below the abutment assembly. The abutment assembly moves away from the boss, and the support platform slides closer to or away from the boss. A third driving member is provided on the frame to drive the support platform to lift and rise.

[0007] By adopting the above technical solution, in actual use, the stator core is placed on the support platform, and the upper end of the mandrel extends into the stator core to position it. Driver three drives the support platform to descend and approach the boss. Under the action of gravity, the stator core descends, causing the abutment assembly to extend into the latching groove and press the latching pieces. Driver one drives the upper pressure die to descend and abut against the stator core, causing the stator core to descend further. The abutment assembly then presses the latching pieces below it into place. After the stator core is pressed against the support platform, driver two drives the abutment assembly to rise, pressing the remaining latching pieces against the end face of the stator core. The descent of the support platform allows for the processing of stator cores with greater height without changing the travel of the abutment assembly, thus improving applicability. Furthermore, when the lower pressure die presses down on the stator core, the mandrel extends into the inner ring of the stator core to correct its coaxiality.

[0008] Preferably, the abutment assembly includes a fixed ring that slides and rises on the frame and a plurality of abutment members disposed on the fixed ring. The fixed ring has a positioning ring groove, which is arranged around the mandrel. The abutment members are provided with positioning members, and the positioning ring groove allows the positioning members to be engaged. The positioning members slide within the positioning ring groove. A locking member is threadedly connected to the positioning member. The locking member abuts against the abutment members, and the positioning members abut against the fixed ring. The locking member presses against the abutment members so that the positioning members press against the fixed ring on the side away from the locking member and are positioned.

[0009] By adopting the above technical solution, in the actual processing, the interval angle of the slots of different models of stator cores is different. By opening the positioning ring groove, it is easy to adjust the interval angle between the contacting parts so as to match the distribution of the slots of the stator core.

[0010] Preferably, the abutting member has an adjustment groove, the adjustment groove is for the positioning member to be engaged, and the positioning member slides within the adjustment groove.

[0011] By adopting the above technical solution, in the actual processing, the diameters of stator cores of different models are different. By sliding the positioning part into the adjustment groove, it is easy to adjust the distance between the contacting part in the adjustment groove and the axis of the fixed ring to adapt to the radius of the processed stator core.

[0012] Preferably, the protrusion is provided with a buffer airbag, the buffer airbag has an air outlet, and the buffer airbag is located on the moving path of the support platform.

[0013] By adopting the above technical solution, during the process of the cylinder-driven support platform descending, the distance between the support platform and the boss gradually decreases, compressing the buffer airbag and expelling the gas inside the buffer airbag from the air outlet. The buffer airbag's contact with the support platform helps reduce collisions between the support platform and the boss during the descent, thus improving the service life of the edge pressing machine.

[0014] Preferably, the buffer airbag is provided with an air outlet pipe, which is connected to the air outlet. A cover plate is hinged to the air outlet pipe. The cover plate is located on the moving path of the stator core and abuts against the stator core, covering the end of the air outlet pipe away from the air outlet. An air storage device is provided on the air outlet pipe, and an air one-way valve is provided on the air outlet pipe. The air one-way valve is used to prevent gas in the air storage device from entering the buffer airbag.

[0015] By adopting the above technical solution, debris will be generated during the process of pressing the mandrel into the inner ring of the stator core. In the actual processing, the stator core is placed on the support platform, and the support platform descends to compress the buffer air bladder, causing the gas inside the buffer air bladder to enter the exhaust pipe. Since the stator core is always in contact with the cover plate, the cover plate closes the exhaust pipe, and the gas entering the exhaust pipe is stored in the gas storage device. After the pressing is completed, the support platform rises, causing the mandrel to gradually detach from the stator core. The processed stator core is then removed, and the gas rushes out from the gas storage device, opening the cover plate and blowing the debris off the support platform.

[0016] Preferably, the vent pipe is provided with an elastic element, one end of which abuts against the cover plate, so that the cover plate tends to open the vent pipe.

[0017] By adopting the above technical solution, the resistance encountered by the gas when it is blown out of the outlet pipe is reduced, which helps to increase the wind force blowing to the support platform.

[0018] Preferably, the cover plate includes a plate body hinged to the cover plate and a soft pad disposed on the plate body, the soft pad being used to abut against the stator core.

[0019] By adopting the above technical solution, during the process of the stator core abutting against the plate, the plate abuts against the stator core under the action of the elastic element. When the stator core moves, scratches will be left on the outer surface of the stator core. By contacting the soft pad with the stator core, the occurrence of scratches on the surface of the stator core is reduced.

[0020] Preferably, the gas storage component is elastic and has a tendency to contract after the gas is introduced and expanded.

[0021] By adopting the above technical solution, in the actual processing, after the gas enters the gas storage component, the gas storage component expands. At this time, the gas storage component tends to contract. When the stator core is removed, the gas is quickly blown out of the gas outlet pipe under the action of the contraction force of the gas storage component, which helps to increase the wind force blowing to the support platform.

[0022] Preferably, the frame is provided with a support plate, the air outlet pipe passes through the support plate, and the support plate is used to support the air outlet pipe.

[0023] By adopting the above technical solution, the air outlet pipe is supported by the support plate, which reduces the possibility of the end of the air outlet pipe away from the air outlet moving when the air outlet pipe is accidentally hit, causing the blown air to deviate from the support platform.

[0024] Preferably, the buffer airbag is elastic, and the buffer airbag tends to expand after being squeezed and contracted. The buffer airbag is provided with a one-way air intake valve, which is used to introduce air into the buffer airbag.

[0025] By adopting the above technical solution, during the process of the support platform rising, the distance between the support platform and the boss gradually increases, and the buffer airbag tends to expand under its own elastic force, so that gas enters the buffer airbag from the one-way air inlet valve and is re-inflated, making it easy to reuse.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By lowering the support platform, it is possible to process stator cores with higher heights without changing the travel of the opposing components, which improves applicability; 2. By opening positioning ring grooves, it is easy to adjust the interval angle between the contacting parts so that it can be adapted to the distribution of the stator core grooves; 3. By sliding the positioning element into the adjustment groove, the distance between the contacting element in the adjustment groove and the axis of the fixed ring is adjusted to be compatible with the radius of the stator core being machined. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this embodiment.

[0028] Figure 2 for Figure 1 The enlarged view of section A mainly shows the structure of the contact component.

[0029] Figure 3 This is an exploded view of a portion of the end cap in this embodiment, mainly showing the connection structure of the end cap.

[0030] Figure 4 This is a partial structural diagram of the workbench in this embodiment, mainly showing the state of the edge pressing machine during operation.

[0031] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Drive component one; 12. Drive component two; 13. Support platform; 131. Clearance groove one; 14. Drive component three; 2. Worktable; 21. Support plate; 3. Abutment assembly; 31. Fixing ring; 311. Positioning ring groove; 32. Abutment component; 321. Positioning rod; 3211. Adjustment groove; 322. Pressure roller; 33. Positioning component; 34. Locking component; 4. Upper pressure mold; 41. Clearance groove two; 5. Boss; 51. Mandrel; 6. Buffer airbag; 61. Air outlet; 7. Air outlet pipe; 71. Cover plate; 711. Plate body; 712. Protective pad; 72. Elastic component; 73. Air storage component. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a stator core pressing machine. (Refer to...) Figure 1 The system includes a frame 1, a worktable 2, a contact assembly 3, and an upper pressure mold 4. The worktable 2 is fixed to the frame 1. Both the contact assembly 3 and the upper pressure mold 4 are located above the worktable 2, and the upper pressure mold 4 is located above the contact assembly 3. Both the contact assembly 3 and the upper pressure mold 4 are slidably connected to the frame 1. A first drive component 11 is fixed to the frame 1, located above the frame 1. The piston rod of the first drive component 11 passes through the top of the frame 1 and is fixedly connected to the upper pressure mold 4. The first drive component 11 drives the upper pressure mold 4 to move up and down. A second drive component 12 is fixed to the frame 1, located below the worktable 2. The piston rod of the second drive component 12 passes through the worktable 2 and is fixedly connected to the contact assembly 3. The second drive component 12 drives the contact assembly 3 to move up and down.

[0034] Reference Figure 1 A boss 5 is fixed above the worktable 2, located below the contact component 3. A mandrel 51 is fixed above the worktable 2, with the boss 5 arranged around the outer circumference of the mandrel 51. The mandrel 51 is adapted to the inner ring of the stator core and is used to calibrate the coaxiality of the stator core. A support platform 13 is slidably connected to the frame 1, supporting the stator core. An upper pressure mold 4 is used to press the stator core against the support platform 13. The support platform 13 is arranged around the outer circumference of the stator core and is located above the boss 5. The support platform 13 slides closer to or away from the boss 5. A third driving component 14 is fixed on the frame 1, located below the worktable 2. The piston rod of the third driving component 14 passes through the worktable 2 and is fixedly connected to the support platform 13. The third driving component 14 drives the support platform 13 to rise and fall. In this embodiment, the first driving component 11, the second driving component 12, and the third driving component 14 are all hydraulic cylinders.

[0035] Reference Figure 1 and Figure 2The abutment component 3 includes a fixed ring 31 and several abutment members 32. The fixed ring 31 is arranged around the outer periphery of the spindle 51. The fixed ring 31 slides up and down on the frame 1. A positioning ring groove 311 is provided on the fixed ring 31. The positioning ring groove 311 passes through the fixed ring 31 in the vertical direction. The positioning ring groove 311 is circular. The axis of the positioning ring groove 311 is on the same straight line as the axis of the spindle 51. The fixed ring 31 is fixedly connected to the piston rod of the driving component 2 12. Each abutting element 32 includes a positioning rod 321 and a pressure roller 322. The position and number of positioning rods 321 correspond one-to-one with the position and number of stator core clips. The positioning rods 321 are located above the fixing ring 31, which supports the positioning rods 321. The positioning rods 321 are evenly distributed at equal intervals around the outer circumference of the stator core on the fixing ring 31. The length direction of the positioning rods 321 is parallel to the radial direction of the fixing ring 31. A positioning element 33 is fixed on the positioning rod 321 to fix the positioning rod 321 to the fixing ring 31. The pressure roller 322 is located on the side of the positioning rod 321 near the spindle 51. The pressure roller 322 is rotatably connected to the positioning rod 321. The rotation axis of the pressure roller 322 is horizontal and perpendicular to the length of the connected positioning rod 321. The pressure roller 322 is located on the moving path of the stator core clip and is used to abut against the clips to press them into the corresponding clip grooves.

[0036] Reference Figure 1 and Figure 2 The positioning component 33 includes a screw and a positioning head. The positioning head is located at one end of the screw and is fixedly connected to the screw. An adjustment groove 3211 is provided on the positioning rod 321. The extension direction of the adjustment groove 3211 is parallel to the length direction of the positioning rod 321. The adjustment groove 3211 extends through the positioning rod 321 in the vertical direction and is connected to the positioning ring groove 311. Both the adjustment groove 3211 and the positioning ring groove 311 are for the screw to be inserted into. The screw extends into the positioning ring groove 311 and the adjustment groove 3211 in sequence. The positioning head is located at the end of the fixing ring 31 away from the positioning rod 321 and abuts against the lower end face of the fixing ring 31. The end of the screw away from the positioning head extends out of the adjustment groove 3211. A locking component 34 is threadedly connected to the screw. The locking component 34 is located on the side of the positioning rod 321 away from the fixing ring 31. The locking component 34 abuts against the positioning rod 321 so that the positioning head abuts against the fixing ring 31, thereby fixing the positioning rod 321 onto the fixing ring 31. In this embodiment, the positioning element 33 is a bolt, and the locking element 34 is a nut.

[0037] Reference Figure 1The outer wall of the support platform 13 is provided with a first clearance groove 131. The position and number of clearance grooves 131 correspond one-to-one with the position and number of pressure rollers 322. When the stator core is placed on the support platform 13, the first clearance groove 131 is connected to the locking groove of the stator core. The upper pressure mold 4 is provided with a second clearance groove 41. The position and number of clearance grooves 41 correspond one-to-one with the position and number of clearance grooves 131. The second clearance groove 41 is located on the extension path of the corresponding clearance groove 131.

[0038] Before processing begins, the piston rod of drive component 3 14 extends to lift the support platform 13. At this time, the upper end of the spindle 51 protrudes from the upper end face of the support platform 13, and the piston rod of drive component 2 12 is in the retracted state. At this time, the upper end face of the support platform 13 is above the positioning rod 321, and the pressure roller 322 is inserted into the corresponding clearance groove 131. The piston rod of drive component 3 14 is in the retracted state to maximize the distance between the upper die 4 and the support platform 13.

[0039] During the processing, the stator core is placed above the support platform 13. The upper end of the mandrel 51 is inserted into the inner ring of the stator core and fits against the inner ring of the stator core. The piston rod of the drive component 14 retracts, causing the support platform 13 to move towards the boss 5. The boss 5 supports the support platform 13. When the upper end of the support platform 13 moves below the pressure roller 322, the pressure roller 322 is inserted into the buckle groove to press the buckle piece. However, since the buckle piece is not completely fitted with the end face of the stator core, the resistance between the pressure roller 322 and the stator core is large, causing the stator core to gradually detach from the support platform 13. The piston rod of the drive component 11 extends, causing the lower die to move downward to press the stator core, causing the stator core to move towards the support platform 13. During the movement of the stator core, the pressure roller 322 rolls over the buckle groove to press the buckle plate against the inner wall of the groove. As the stator core descends, the mandrel 51 gradually moves and extends into the inner ring of the stator core, punching out any excess material and calibrating the stator core. Once the upper die 4 presses the stator core firmly onto the support platform 13, the piston rod of the drive component 3 14 extends, causing the fixing ring 31 to move upwards. This, in turn, causes the pressure roller 322 to move upwards, pressing the remaining buckle plate against the inner wall of the buckle groove, completing the processing.

[0040] After processing, the piston rod of drive component 2 12 retracts again, causing the pressure roller 322 to press over the buckle plate again. The piston rod of drive component 1 1 retracts, causing the upper pressure mold 4 to rise. The piston rod of drive component 3 14 extends, causing the support platform 13 to rise and lift the stator core, making it easier to remove the stator core from the mandrel 51.

[0041] Reference Figure 1A buffer airbag 6 is fixed above the boss 5. The buffer airbag 6 is elastic and is used to buffer the collision force between the support platform 13 and the boss 5. The buffer airbag 6 is arranged around the outer periphery of the spindle 51 and is located below the support platform 13. The buffer airbag 6 is located on the moving path of the support platform 13. An air outlet 61 is opened on the buffer airbag 6 for air to be released. When the support platform 13 descends and abuts against the buffer airbag 6, it squeezes the buffer airbag 6, squeezing out the gas inside the buffer airbag 6. The buffer airbag 6 has a tendency to expand during the compression and contraction process.

[0042] Reference Figure 1 A one-way air inlet valve is fixed on the buffer airbag 6. During the descent of the support platform 13, the support platform 13 compresses the buffer airbag 6, reducing direct contact between the support platform 13 and the boss 5, and reducing collisions between them. After the support platform 13 rises, gas enters the buffer airbag 6 through the one-way air inlet valve, and the buffer airbag 6 returns to its original shape for future use. In this embodiment, the buffer airbag 6 is made of rubber.

[0043] Reference Figure 1 A support plate 21 is fixed above the workbench 2. The support plate 21 is located on one side of the fixed ring 31 distributed in the horizontal direction. An air outlet pipe 7 is fixed on the buffer airbag 6. The air outlet pipe 7 is connected to the air outlet 61. The support plate 21 is located on the side of the air outlet pipe 7 away from the buffer airbag 6. The support plate 21 is fixedly connected to the air outlet pipe 7. The support plate 21 is used to support the air outlet pipe 7 and improve the positioning effect of the air outlet pipe 7.

[0044] Reference Figure 1 The end of the vent pipe 7 away from the vent 61 is bent toward the direction of the spindle 51, so that the gas is blown toward the direction of the spindle 51. The height of the end of the vent pipe 7 away from the vent 61 is equal to the starting height of the support platform 13. The gas blown out by the vent pipe 7 is used to blow fine debris away from the surface of the support platform 13.

[0045] Reference Figure 2 and Figure 3A cover plate 71 is hinged to one end of the vent pipe 7 away from the vent port 61. The cover plate 71 includes a plate body 711 and a protective pad 712. The plate body 711 is hinged to the vent pipe 7, and the hinge axis of the plate body 711 is set horizontally. The plate body 711 is used to rotate downward to cover the vent pipe 7 and prevent gas from blowing out. An elastic element 72 is fixed on the vent pipe 7. The elastic element 72 is located on the hinge axis of the plate body 711. The opposite ends of the elastic element 72 abut against the vent pipe 7 and the plate body 711 respectively, so that the plate body 711 has the tendency to rotate to open the vent pipe 7. The protective pad 712 is located on the side of the plate 711 away from the vent pipe 7. The protective pad 712 is fixedly connected to the plate 711. When the plate 711 rotates away from the vent pipe 7, it causes the protective pad 712 to extend into the moving path of the stator core, so that the protective pad 712 abuts against the end of the stator core near the support platform 13, causing the plate 711 to cover the vent pipe 7, ensuring that the vent pipe 7 remains closed during the processing of the stator core. In this embodiment, the elastic element 72 is a torsion spring.

[0046] Reference Figure 4 An air storage component 73 is fixed to the body of the air outlet pipe 7. The air storage component 73 is connected to the inside of the air outlet pipe 7 and is located on the side of the end cap near the air outlet 61. The air storage component 73 is used to store the gas expelled from the buffer airbag 6. The air storage component 73 is located above the support plate 21 and is elastic. When gas enters the air storage component 73, the air storage component 73 expands and presses against the support plate 21. At this time, the air storage component 73 has a tendency to contract and squeeze out the gas. In this embodiment, the air storage component 73 is a balloon.

[0047] After the workpiece is processed and removed, the vent pipe 7 is connected to the outside, and the gas storage component 73 discharges the internal gas.

[0048] Reference Figure 1 and Figure 4 An exhaust one-way valve is fixed on the exhaust pipe 7. The exhaust one-way valve is not shown in the figure. The exhaust one-way valve is located inside the exhaust pipe. The exhaust one-way valve is located on the side of the air storage component 73 away from the cover plate 71. The exhaust one-way valve is located on the side of the exhaust port 61 close to the air storage component 73. The exhaust one-way valve is used to control the flow direction of the gas in the exhaust pipe 7, so that the gas stored in the air storage component 73 is not easy to return to the buffer air bag 6 along the exhaust pipe 7. This helps to increase the flow rate of the gas coming out of the exhaust pipe 7, thereby helping to increase the wind force blowing onto the end face of the support platform 13.

[0049] The implementation principle of a stator core pressing machine according to an embodiment of this application is as follows: During actual processing, the travel distance of the pressing roller 322 rolling on the stator core is equal to the travel distance of the support table 13 and the travel distance of the pressing roller 322, which increases the travel distance of the stator cores that can be processed, thereby improving the applicability of the pressing machine.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stator core pressing machine, comprising a frame (1), a worktable (2) disposed on the frame (1), an abutment assembly (3) that slides and rises on the frame (1), and an upper pressing die (4) that slides and rises on the frame (1), the upper pressing die (4) being used to press the stator core, wherein the frame (1) is provided with a first driving member (11) for driving the upper pressing die to rise and a second driving member (12) for driving the abutment assembly (3) to rise and fall, characterized in that: The workbench (2) is provided with a mandrel (51), which is used to be adapted to the inner ring of the stator core. The frame (1) is provided with a support platform (13) that slides up and down. The support platform (13) is used to support the stator core. The workbench (2) is provided with a boss (5), which is located below the contact component (3). The contact component (3) moves away from the boss (5). The support platform (13) slides closer to or away from the boss (5). The frame (1) is provided with a driving component (14), which drives the support platform (13) to move up and down. The abutment assembly (3) includes a fixed ring (31) that slides and moves up and down on the frame (1) and a plurality of abutment members (32) provided on the fixed ring (31). The fixed ring (31) has a positioning ring groove (311) which is arranged around the outer periphery of the spindle (51). The abutment member (32) is provided with a positioning member (33). The positioning ring groove (311) is for the positioning member (33) to be inserted into. The positioning member (33) slides in the positioning ring groove (311). The positioning member (33) is threadedly connected with a locking member (34). The locking member (34) abuts against the abutment member (32). The positioning member (33) abuts against the fixed ring (31). The locking member (34) abuts against the abutment member (32) so that the positioning member (33) abuts against the fixed ring (31) away from the locking member (34) and is positioned. The boss (5) is provided with a buffer airbag (6), the buffer airbag (6) is provided with an air outlet (61), and the buffer airbag (6) is located on the moving path of the support platform (13). The airbag (6) is provided with an air outlet pipe (7), which is connected to the air outlet (61). A cover plate (71) is hinged on the air outlet pipe (7). The cover plate (71) is located on the moving path of the stator core and abuts against the stator core, covering the end of the air outlet pipe (7) away from the air outlet (61). An air storage device (73) is provided on the air outlet pipe (7). An air outlet one-way valve is provided on the air outlet pipe (7). The air outlet one-way valve is used to prevent the gas in the air storage device (73) from entering the airbag (6). The buffer airbag (6) is elastic. The buffer airbag (6) tends to expand after being squeezed and contracted. The buffer airbag (6) is provided with a one-way air inlet valve, which is used to introduce air into the buffer airbag (6).

2. The stator core pressing machine according to claim 1, characterized in that: The abutment (32) is provided with an adjustment groove (3211), the adjustment groove (3211) is for the positioning member (33) to be inserted into, and the positioning member (33) slides in the adjustment groove (3211).

3. A stator core pressing machine according to claim 1, characterized in that: The vent pipe (7) is provided with an elastic element (72), one end of which abuts against the cover plate (71), so that the cover plate (71) tends to open the vent pipe (7).

4. A stator core pressing machine according to claim 3, characterized in that: The cover plate (71) includes a plate body (711) hinged to the cover plate (71) and a protective pad (712) disposed on the plate body (711), the protective pad (712) being used to abut against the stator core.

5. A stator core pressing machine according to claim 1, characterized in that: The gas storage component (73) is elastic and has a tendency to contract after the gas is introduced and expanded.

6. A stator core pressing machine according to claim 1, characterized in that: The workbench (2) is provided with a support plate (21), and the air outlet pipe (7) passes through the support plate (21). The support plate (21) is used to support the air outlet pipe (7).

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