Rotor inner hole pushing shrinkage fit equipment

Abstract

The utility model discloses rotor inner hole pushing shrinkage fit equipment, which comprises a machine body, an inner hole pushing mechanism and a shrinkage fit mechanism are arranged in the machine body, the shrinkage fit mechanism comprises a base and a pressing assembly at the top, the base is used for placing and positioning a shaftless rotor, a heating piece for heating the shaftless rotor is arranged on the base, and the pressing assembly is used for pressing the shaftless rotor. The pressing assembly is used for pressing downwards to drive the rotating shaft to be installed in the shaftless rotor, the inner hole pushing procedure and the shrinkage fit procedure are integrated on one device, the middle carrying link is omitted, the inner hole pushing procedure and the shrinkage fit procedure can be operated at the same time, the machining efficiency is effectively improved, the labor intensity is reduced, the occupied area is small, the oil smoke purifying machine is arranged, and the cost is reduced. And by adopting induction heating, workers do not need to work in a high-temperature environment, and the working environment of the workers is comfortable.

Description

Technical Field

[0001] The utility model relates to the field of rotor processing equipment, in particular to rotor inner hole shrinkage equipment. Background Art

[0002] The motor rotor is an important component of the motor. The motor rotor consists of a shaftless rotor and a rotating shaft. In the actual production process, since the shaftless rotor is stacked up by silicon steel sheets, the inner hole is inevitably misaligned. It is necessary to push the inner hole with a push knife before heat-shrink fitting. The worker first pushes the inner hole of the shaftless rotor on the press, and then uses a trolley to transport the shaftless rotor with the pushed inner hole to the heat-shrink fitting station. The heating furnace heats the shaftless rotor to the set temperature. The worker takes the shaftless rotor from the furnace mouth, inserts the rotating shaft, and then hits it against the aluminum block on the workbench, relying on inertia to insert the rotating shaft into the shaftless rotor.

[0003] This working method makes the inner hole pushing and shrink sleeve processes independent of each other and requires material turnover in between, resulting in a long total processing time, which in turn affects processing efficiency and is labor-intensive. Utility Model Content

[0004] In order to further improve processing efficiency and reduce labor intensity, the present application provides a rotor inner hole hot-jacketing device.

[0005] This application provides a rotor inner hole shrinkage device, which adopts the following technical solutions:

[0006] The rotor inner hole pushing and shrink fitting equipment includes a machine body, which is provided with an inner hole pushing mechanism and a shrink fitting mechanism. The shrink fitting mechanism includes a base and a downward pressing component on the top. The base is used for placing and positioning the shaftless rotor. The base is provided with a heating element for heating the shaftless rotor. The downward pressing component is used to press down and drive the rotating shaft into the shaftless rotor.

[0007] Optionally, the base is vertically slidably connected to the body, and the body is provided with a lifting cylinder for driving the base to rise and fall.

[0008] Optionally, the pressing assembly includes a pressing head and a first driving member, wherein the first driving member drives the pressing head to move vertically upward and downward, and the pressing head is elastically connected to the output end of the first driving member.

[0009] Optionally, a avoidance groove is provided in the middle of the pressure head, and the avoidance groove passes through vertically and is used for the top end of the rotating shaft to pass through.

[0010] Optionally, the bottom end of the pressure head is vertically elastically connected to a protective plate, and the center of the protective plate also has an avoidance groove. The pressure head is provided with a travel switch that abuts the protective plate. The protective plate moves up to trigger the travel switch to control the thermal sleeve mechanism to stop.

[0011] Optionally, the heating element includes an induction heating copper ring, which is arranged around the base. The machine body has a table top, and the table top has positioning blocks for positioning the induction heating copper ring. Multiple positioning blocks are evenly distributed around the circumference of the induction heating copper ring.

[0012] Optionally, a fixed plate is provided at the output end of the first driving member, a telescopic rod connecting the fixed plate and the pressure head is provided between the fixed plate and the pressure head, a spring is externally connected to the telescopic rod, and two ends of the spring are respectively connected to the fixed plate and the pressure head.

[0013] Optionally, the inner hole pushing mechanism includes a positioning tool, a push knife, a pressure plate and a second driving member. The positioning tool is used to position and place the shaftless rotor, the push knife is used to be inserted into the shaftless rotor, and the pressure plate is located above the push knife and is vertically lifted and lowered under the action of the second driving member.

[0014] Optionally, the machine body is provided with a frame for separately installing the inner hole pushing mechanism and the shrink sleeve mechanism, and safety gratings are provided on both sides of the front end of the frame.

[0015] Optionally, an oil fume purifier is provided on the top of the machine body, and an exhaust pipe is provided inside the machine body. One end of the exhaust pipe is connected to the heat sleeve mechanism, and the other end is connected to the oil fume purifier.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. The inner hole pushing and shrink fitting processes are integrated into one device, which saves the intermediate transportation link. The inner hole pushing and shrink fitting processes can be performed simultaneously, effectively improving processing efficiency and reducing labor intensity. It also occupies a small area and is equipped with an oil fume purifier. The oil fume is discharged after purification without polluting the indoor environment. It adopts induction heating, so workers do not need to work in a high temperature environment, and the employees have a comfortable working environment.

[0018] 2. The base of the shrink sleeve mechanism can be adjusted vertically. When the shaftless rotor needs to be placed in actual use, the base can be driven up to facilitate the placement of the shaftless rotor. When heating, the base can be driven down to allow the shaftless rotor to retract into the induction heating copper ring to achieve better and more uniform heating.

[0019] 3. The pressing head is elastically connected to the first driving member to avoid impact during the press-fitting process and achieve better stamping effect. A protective plate is provided on the pressing head. When there is deviation in the placement of the rotating shaft and the shaftless rotor, the pressing head will hit the protective plate, triggering the travel switch and stopping the shrink fitting mechanism, thus avoiding damage due to deviation during the stamping process.

[0020] 4. With the help of the setting of safety grating, the safety of use is improved and the safety hazards caused by the staff putting their hands into the interior during the stamping process are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall structural diagram of an embodiment of the present application.

[0022] Figure 2 It is a structural diagram of the inner hole pushing mechanism in the embodiment of the present application.

[0023] Figure 3 It is a structural diagram of the shrink fit mechanism in the embodiment of the present application.

[0024] Description of reference numerals:

[0025] 1. Machine body; 2. Machine cover; 3. Workbench; 4. Inner hole pushing mechanism; 5. Shrink sleeve mechanism; 6. Oil fume purifier; 7. Exhaust duct; 8. Switch control panel; 9. Positioning tool; 10. Push knife; 11. Press plate; 12. Second drive member; 13. Shaftless rotor; 14. Base; 15. Press head; 16. First drive member; 17. Induction heating copper ring; 18. Lifting cylinder; 19. Rotating shaft; 20. Avoidance groove; 21. Press sleeve; 22. Fixed plate; 23. Spring; 24. Protective plate; 25. Travel switch; 26. Positioning block; 27. Frame; 28. Safety grating. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 This application is described in further detail.

[0027] Rotor push inner hole heat sleeve equipment, such as Figure 1-Figure 3 As shown, it includes a body 1, the periphery of the body 1 is closed with a machine cover 2, a workbench 3 is provided inside the body 1, and an inner hole pushing mechanism 4 and a shrink sleeve mechanism 5 are provided on the workbench 3. The inner hole pushing mechanism 4 and the shrink sleeve mechanism 5 are arranged adjacent to each other. A fume purifier 6 is provided on the top of the body 1, and a smoke exhaust pipe 7 is provided inside the body 1. One end of the smoke exhaust pipe 7 is connected to the shrink sleeve mechanism 5, and the other end is connected to the smoke purifier 6. The smoke generated during the shrink sleeve process can be discharged in time through the smoke exhaust pipe 7 and purified by the smoke purifier 6. After the smoke is purified, it will not pollute the indoor environment when discharged. In addition, a switch control panel 8 is provided at the front end of the body 1 corresponding to the workbench 3, and a switch component for opening and closing the inner hole pushing mechanism 4 and the shrink sleeve mechanism 5 is provided on the switch control panel 8.

[0028] like Figure 2 As shown, the inner hole pushing mechanism 4 includes a positioning tool 9, a push knife 10, a pressure plate 11 and a second driving member 12. The positioning tool 9 is fixedly set on the workbench 3. The positioning tool 9 is used for positioning and placing the shaftless rotor 13. The push knife 10 is vertically inserted into the shaftless rotor 13. The second driving member 12 adopts a servo electric cylinder. The pressure plate 11 is fixedly set at the output end of the second driving member 12. The second driving member 12 drives the pressure plate 11 to rise and fall vertically.

[0029] The following process occurs during the push-in process: the worker places the shaftless rotor 13 onto the positioning fixture 9, inserts the push blade 10 into the inner hole of the shaftless rotor 13, activates the servo cylinder, and drives the pressure plate 11 downward, pushing the push blade 10 downward. After reaching the set stroke, the servo cylinder returns, completing the push-in process. A pressure sensor is also installed at the connection between the pressure plate 11 and the second drive member 12. If there is a problem with the inner hole of the shaftless rotor 13, resulting in excessive resistance, the pressure sensor detects that the pressure exceeds the specified value, causing the servo cylinder to stop and return, providing protection.

[0030] like Figure 3 As shown, the shrink fit mechanism 5 includes a base 14 and a downward pressing component on the top, the downward pressing component includes a pressure head 15 and a first driving member 16, the first driving member 16 also adopts a servo electric cylinder, the pressure head 15 is elastically connected to the output end of the first driving member 16, the base 14 is arranged on the workbench 3 and is located below the pressure head 15, the base 14 is provided for the shaftless rotor 13 to be stably placed, and a heating element for heating the shaftless rotor 13 is provided on the base 14, the heating element includes an induction heating copper ring 17, and the induction heating copper ring 17 is arranged around the base 14. In actual use, the base 14 and the shaftless rotor 13 are both located in the induction heating copper ring 17. With the help of the induction heating copper ring 17, the internal shaftless rotor 13 can be evenly heated to achieve a good shrink fit effect.

[0031] The base 14 is vertically slidably connected to the body 1, and a lifting cylinder 18 is provided on the body 1 to drive the base 14 to rise and fall vertically, so that the vertical height of the base 14 can be adjusted. The function of the lifting cylinder 18 is to facilitate the removal and placement of the shaftless rotor 13. When the shaftless rotor 13 is removed and placed, the lifting cylinder 18 rises, and the base 14 and the upper part of the induction heating copper ring 17 are flush, which is convenient for the placement of the shaftless rotor 13. When heating, the base 14 is driven downward so that the shaftless rotor 13 is retracted into the induction heating copper ring 17 to achieve better uniform heating.

[0032] like Figure 3 As shown, a through avoidance groove 20 is opened in the center of the ram 15. Since the end of the rotating shaft 19 cannot usually be directly stamped, a press sleeve 21 will be installed on the rotating shaft 19 during the actual stamping process. When the ram 15 is pressed down, it presses on the press sleeve 21 to press the rotating shaft 19 into the shaftless rotor 13 after the heat-shrink sleeve is completed. The design of the avoidance groove 20 can avoid the end of the rotating shaft 19. During the stamping process, the top of the rotating shaft 19 can pass through the ram 15, ensuring that the ram 15 can press the press sleeve 21 below to drive the rotating shaft 19 to move downward.

[0033] like Figure 3As shown, a fixed plate 22 is provided at the output end of the first driving member 16, and a telescopic rod connecting the fixed plate 22 and the pressure head 15 is provided between the fixed plate 22 and the pressure head 15. A spring 23 is sleeved on the outside of the telescopic rod, and the two ends of the spring 23 are respectively connected to the fixed plate 22 and the pressure head 15, so that an elastic connection is achieved between the pressure head 15 and the fixed plate 22. The pressure first acts on the spring 23, and the spring 23 then applies the pressure to the pressing sleeve 21, so as to avoid impact during press-fitting.

[0034] like Figure 3 As shown, a protective plate 24 is provided at the bottom of the pressing head 15 and is elastically connected to the pressing head 15 vertically. The center of the protective plate 24 also has a vertical avoidance groove 20. Travel switches 25 are provided on both sides of the pressing head 15 and are in contact with the protective plate 24. The travel switch 25 is used to control the shutdown of the shrink fit mechanism 5. When there is a deviation in the placement of the rotating shaft 19 and the shaftless rotor 13, the protective plate 24 will be abutted during stamping to trigger the travel switch 25 and shut down the shrink fit mechanism 5, thereby avoiding damage due to deviation during the stamping process.

[0035] like Figure 3 As shown, a table top is provided on the workbench 3, and a positioning block 26 is provided on the table top for positioning the induction heating copper ring 17. There are four positioning blocks 26 evenly distributed around the circumference. The positioning blocks 26 are detachably connected to the table top with screws. With the help of the positioning blocks 26, the position of the induction heating copper ring 17 is ensured not to shift, and to maintain a good working condition.

[0036] The process of shrink fitting is as follows: the employee takes the shaftless rotor 13 after pushing the inner hole, inserts it into the rotating shaft 19, and then puts the pressing sleeve 21 onto the rotating shaft 19, and then puts the whole thing on the base 14 of the lifting cylinder 18. The lifting cylinder 18 drives the base 14 to descend, and after it is in place, the induction heating copper ring 17 begins to heat the shaftless rotor 13, while the first driving member 16 descends to the initial position and waits. After the set time is reached, the heating stops, and the first driving member 16 starts to press down from the initial position. After reaching the set pressure, the first driving member 16 stops and returns upward, and the shrink fitting work is completed. A pressure sensor is also provided between the first driving member 16 and the fixed plate 22 to avoid excessive pressure during the stamping process.

[0037] like Figure 1-Figure 3 As shown, a frame 27 for independently installing the inner hole pushing mechanism 4 and the shrink fitting mechanism 5 is provided inside the body 1. The frame 27 is arranged in a one-to-one correspondence with the inner hole pushing mechanism 4 and the shrink fitting mechanism 5. Safety gratings 28 are provided on both sides of the front end of the frame 27. With the help of the setting of the safety gratings 28, the safety of use is improved, and the safety hazard caused by the staff's hands reaching into the interior during the stamping process is avoided.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. Rotor push inner hole shrinkage equipment, characterized by: The invention comprises a machine body (1), wherein the machine body (1) has an inner hole pushing mechanism (4) and a shrinkage mechanism (5), wherein the shrinkage mechanism (5) comprises a base (14) and a top pressing component, wherein the base (14) is used for positioning a shaftless rotor (13), and a heating element for heating the shaftless rotor (13) is provided on the base (14), and the shrinkage component is used for pressing down to drive a rotating shaft (19) to be installed in the shaftless rotor (13).

2. The rotor inner hole shrink fitting device according to claim 1, characterized in that: The base (14) is vertically slidably connected to the machine body (1), and a lifting cylinder (18) is provided on the machine body (1) for driving the base (14) to rise and fall.

3. The rotor inner hole shrink fitting device according to claim 1, characterized in that: The pressing assembly comprises a pressing head (15) and a first driving member (16), wherein the first driving member drives the pressing head (15) to move vertically upward and downward, and the pressing head (15) is elastically connected to the output end of the first driving member (16).

4. The rotor inner hole shrink fitting device according to claim 3, characterized in that: A relief groove (20) is provided in the middle of the pressure head (15), and the relief groove (20) is vertically penetrated and is used for the top end of the rotating shaft (19) to pass through.

5. The rotor inner hole shrink fitting device according to claim 4, characterized in that: The bottom end of the pressure head (15) is vertically elastically connected to a protective plate (24), and the center of the protective plate (24) also has an avoidance groove (20). The pressure head (15) is provided with a travel switch (25) that abuts against the protective plate (24). When the protective plate (24) moves upward, the travel switch (25) is triggered to control the shrink sleeve mechanism (5) to stop.

6. The rotor inner hole shrinkage device according to claim 1, characterized in that: The heating element comprises an induction heating copper ring (17), the induction heating copper ring (17) is arranged around the base (14), the machine body (1) is provided with a table, the table is provided with a positioning block (26) for positioning the induction heating copper ring (17), and a plurality of the positioning blocks (26) are evenly distributed around the circumference of the induction heating copper ring (17).

7. The rotor inner hole shrink fitting device according to claim 3, characterized in that: A fixed plate (22) is provided at the output end of the first driving member (16); a telescopic rod connecting the fixed plate (22) and the pressure head (15) is provided between the fixed plate (22) and the pressure head (15); a spring (23) is connected to the outer surface of the telescopic rod; and two ends of the spring (23) are respectively connected to the fixed plate (22) and the pressure head (15).

8. The rotor inner hole shrink fitting device according to claim 1, characterized in that: The inner hole pushing mechanism (4) comprises a positioning tool (9), a push knife (10), a pressure plate (11) and a second driving member (12); the positioning tool (9) is used for positioning and placing the shaftless rotor (13); the push knife (10) is used for inserting into the shaftless rotor (13); the pressure plate (11) is located above the push knife (10) and is vertically lifted and lowered under the action of the second driving member (12).

9. The rotor inner hole shrink fitting device according to claim 1, characterized in that: The machine body (1) is provided with a frame (27) for separately installing the inner hole pushing mechanism (4) and the shrink sleeve mechanism (5), and safety gratings (28) are provided on both sides of the front end of the frame (27).

10. The rotor inner hole shrinkage device according to claim 1, characterized in that: An oil fume purifier (6) is provided on the top of the machine body (1), and an exhaust pipe (7) is provided inside the machine body (1). One end of the exhaust pipe (7) is connected to the heat-shrink mechanism (5), and the other end is connected to the oil fume purifier (6).

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