Motor rotor lamination press-fitting equipment

Abstract

The utility model discloses motor rotor lamination press-fitting equipment in the technical field of motor part assembly, and the motor rotor lamination press-fitting equipment comprises a press-fitting device, the press-fitting device comprises a mounting table, a lower die body, a fixing sleeve, an upper die body and a connecting plate, the middle part of the lower die body is provided with a fixing hole for inserting one end of a shaft of a rotor, and the lower die body is mounted on the mounting table; the center of the upper die body is provided with a first die cavity allowing the lock washer to enter and a second die cavity allowing the other end of the shaft to be inserted, the top of the upper die body is slidably connected with a connecting plate through a sliding rod, and the connecting plate is connected with the working end of an oil press. One end of the fixing sleeve is provided with a sinking groove, after the iron cores are stacked, the sinking groove in the fixing sleeve is clamped at the edge of the end plate, and the iron cores are pre-tightened by pressing down the fixing sleeve. The fixing sleeve is used for pre-tightening the iron cores after the iron cores are overlaid every time, breakage, dislocation and the like of the iron cores are avoided, finally, the whole rotor is pressed and attached, manual tightening operation is not needed, and labor intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor parts assembly, in particular to motor rotor lamination press-assembly equipment. Background Art

[0002] In the prior art, the rotor shaft and iron core, end plate and commutator are all assembled by pressing separately. The motor rotor iron core is mostly riveted with silicon steel sheets, and the whole is divided into multiple sections, which puts high requirements on the lamination and assembly of the rotor iron core and shaft.

[0003] Traditional operations usually use manual pressing, which not only cannot guarantee the pressing effect of the core, but also causes cracking of the internal permanent magnet magnetic steel due to excessive pressing, or causes the rotor length to exceed the design due to inadequate pressing. After the existing technology has been improved, a press is used to stack the rotor core. After the stacking is completed, the upper round nut needs to be tightened on the shaft in conjunction with the stop washer to ensure the pressing effect of the stop washer. Even the improved technology still uses manual tightening. This has the disadvantage that on the one hand, it cannot ensure that the tightening is in place. On the other hand, due to the large size of the nut, the tightening torque is large and the operation labor intensity is also high. The overall assembly process is divided into several parts, which not only wastes human resources but also fails to guarantee quality. Utility Model Content

[0004] The utility model aims to provide a motor rotor lamination press-assembly device to solve the problems of low press assembly efficiency and high manual labor intensity in the prior art.

[0005] The motor rotor lamination pressing device in this scheme includes a fixing frame, a workbench arranged on the fixing frame, a back plate connected to one side of the fixing frame, a support table connected to the top of the back plate, a hydraulic press installed on the support table, and a pressing device, the pressing device includes a mounting table, a lower mold body, a fixing sleeve, an upper mold body and a connecting plate, a fixing hole for inserting one end of the rotor shaft is opened in the middle of the lower mold body, the lower mold body is installed on the mounting table, and the mounting table is installed on the workbench;

[0006] The center of the upper mold body is provided with a first mold cavity for the stop washer to enter and a second mold cavity for the other end of the shaft to be inserted. The top of the upper mold body is slidably connected to the connecting plate through a sliding rod, and the connecting plate is connected to the working end of the hydraulic press; a recessed groove is provided at one end of the fixed sleeve. When the iron core is stacked, the recessed groove on the fixed sleeve is clamped on the edge of the end plate, and the iron core is pre-tightened by pressing down the fixed sleeve.

[0007] The working principle of this scheme is: the end plate and the core at one end are stacked and sleeved on the shaft, and one end of the shaft is inserted into the fixing hole of the lower mold body. Each time the core is stacked, the groove of the fixing sleeve is used to clamp the edge of the top core, and then the fixing sleeve is pressed down to pre-tighten the already stacked cores before stacking other cores. After pre-tightening, the fixing sleeve needs to be removed. The same operation is performed until the core stacking is completed, and the top end plate is sleeved on the shaft, and the stop washer is sleeved on the shaft, and then the hydraulic press is started to move the connecting plate and the upper mold body downward, until the upper end of the shaft is inserted into the second mold cavity, and the stop washer enters the first mold cavity, and continues to move downward to generate pressure on the assembled rotor as a whole. The pressure drops and the end plate, core, and stop washer are completely pressed together. Then move the connecting plate and the upper mold body up along the original path and take away the pressed rotor.

[0008] The beneficial technical effect of this scheme is that after each stacking of the iron cores, a fixing sleeve is used to pre-tighten the iron cores to avoid breakage, dislocation, etc. caused by magnetic repulsion between the iron cores during later pressing. The upper mold body is provided with a first mold cavity for the entry of a stop washer and a second mold cavity for the insertion of the other end of the shaft. After matching, the parts are pressed and fitted under pressure, and round nuts and manual tightening operations are no longer required, thereby reducing labor intensity.

[0009] Furthermore, a spring is provided between the top of the upper mold body and the connecting plate.

[0010] Furthermore, an observation port is provided on one side of the fixing sleeve, so as to facilitate observation of the relative position between the sink and the edge of the core for quick clamping.

[0011] Furthermore, the upper mold body and the lower mold body are in cylindrical shape, and the outer diameters of the upper mold body and the lower mold body are greater than the diameter of the iron core.

[0012] Furthermore, the fixing sleeve is made of plastic material. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the motor rotor lamination press-assembly equipment of the utility model;

[0014] Figure 2 It is a structural schematic diagram of a fixing sleeve in the motor rotor lamination press-fitting device of the utility model;

[0015] Figure 3 It is a partial structural sectional view of the motor rotor lamination press-assembly device of the utility model. DETAILED DESCRIPTION

[0016] The following is further described in detail through specific implementation methods:

[0017] The figure marks in the drawings of the specification include: fixed frame 1, workbench 2, back plate 3, support platform 4, hydraulic press 5, connecting plate 6, spring 7, slide rod 8, upper mold body 9, second mold cavity 901, first mold cavity 902, fixed sleeve 10, observation port 101, sink trough 102, rotor 11, shaft 110, lower mold body 12, mounting platform 13.

[0018] The embodiment is basically as shown in the attached Figure 1 , Figure 2 and Figure 3 As shown: the motor rotor lamination pressing equipment includes a fixing frame 1, a workbench 2 is arranged on the fixing frame 1, a back plate 3 is connected to one side of the fixing frame 1, a support platform 4 is connected to the top of the back plate 3, and a hydraulic press 5 is installed on the support platform 4.

[0019] The device also includes a pressing device, which includes a mounting platform 13, a lower mold body 12, a fixing sleeve 10, an upper mold body 9 and a connecting plate 6. A fixing hole for inserting one end of the shaft 110 of the rotor 11 is opened in the middle of the lower mold body 12. The lower mold body 12 is mounted on the mounting platform 13, and the mounting platform 13 is mounted on the workbench 2. The upper mold body 9 and the lower mold body 12 are cylindrical, and the outer diameters of the upper mold body 9 and the lower mold body 12 are greater than the diameter of the iron core.

[0020] A first mold cavity 902 for a stop washer to enter and a second mold cavity 901 for the other end of the shaft 110 to be inserted are provided at the center of the upper mold body 9. The top of the upper mold body 9 is slidably connected to the connecting plate 6 via a slide rod 8. A spring 7 is provided between the top of the upper mold body 9 and the connecting plate 6. The connecting plate 6 is connected to the working end of the hydraulic press 5, and the connecting plate 6 is driven by the hydraulic press 5 to move back and forth in a vertical direction.

[0021] A recess 102 is provided at one end of the fixing sleeve 10. When the iron cores are stacked, the recess 102 on the fixing sleeve 10 is clamped on the edge of the end plate, and the iron cores are pre-tightened by pressing down the fixing sleeve 10. An observation port 101 is provided on one side of the fixing sleeve 10, and the fixing sleeve 10 is made of plastic material.

[0022] The specific implementation process is as follows: the end plate and the iron core at one end are stacked and sleeved on the shaft 110, and one end of the shaft 110 is inserted into the fixing hole of the lower mold body 12. Each time the iron core is stacked, the sink 102 of the fixing sleeve 10 is used to clamp the edge of the uppermost iron core, and then the fixing sleeve 10 is pressed down to pre-tighten the stacked iron cores before stacking the iron cores. After pre-tightening, the fixing sleeve 10 needs to be removed ( Figure 1In order to show the whole, the fixing sleeve 10 is drawn on the middle part), and the same operation is performed until the iron core is stacked. Then, the uppermost end plate is put on the shaft 110, and the stop washer is put on the shaft 110. Then, the hydraulic press 5 is started to move the connecting plate 6 and the upper mold body 9 downward until the upper end of the shaft 110 is inserted into the second mold cavity 901, and the stop washer enters the first mold cavity 902. Continue to move downward to generate pressure on the assembled rotor 11 as a whole. The pressure drops and the end plate, iron core, and stop washer are completely pressed together. Then, the connecting plate 6 and the upper mold body 9 are moved up along the original path, and the pressed rotor 11 is removed.

Claims

1. A motor rotor lamination press-fitting device, comprising a fixing frame, a workbench arranged on the fixing frame, a back plate connected to one side of the fixing frame, a support platform connected to the top of the back plate, a hydraulic press installed on the support platform, characterized in that: It also includes a pressing device, which includes a mounting platform, a lower mold body, a fixing sleeve, an upper mold body and a connecting plate, wherein a fixing hole for inserting one end of the rotor shaft is opened in the middle of the lower mold body, the lower mold body is mounted on the mounting platform, and the mounting platform is mounted on the workbench; The center of the upper mold body is provided with a first mold cavity for the stop washer to enter and a second mold cavity for the other end of the shaft to be inserted. The top of the upper mold body is slidably connected to the connecting plate through a sliding rod, and the connecting plate is connected to the working end of the hydraulic press; a recessed groove is provided at one end of the fixed sleeve. When the iron core is stacked, the recessed groove on the fixed sleeve is clamped on the edge of the end plate, and the iron core is pre-tightened by pressing down the fixed sleeve.

2. The motor rotor lamination press-assembly equipment according to claim 1, characterized in that: A spring is arranged between the top of the upper mold body and the connecting plate.

3. The motor rotor lamination press-assembly equipment according to claim 2, characterized in that: An observation port is provided on one side of the fixing sleeve.

4. The motor rotor lamination press-assembly equipment according to claim 3 is characterized in that: The upper mold body and the lower mold body are in cylindrical shape, and the outer diameters of the upper mold body and the lower mold body are greater than the diameter of the iron core.

5. The motor rotor lamination press-assembly equipment according to claim 4, characterized in that: The fixing sleeve is made of plastic material.

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