Automatic extruding machine for eliminating air holes in rotor end ring

Abstract

The invention discloses a rotor end ring air hole eliminating automatic extruding machine, and belongs to the technical field of motor rotor production, the rotor end ring air hole eliminating automatic extruding machine comprises a workbench (1), the workbench (1) is provided with a first processing station and a second processing station, the first processing station is provided with a first jacking device (2) and a heating device (3), the heating device (3) is located above the first jacking device (2), and the second processing station is provided with a second jacking device (4). A first jacking device (2) and a second jacking device (3) are arranged on the first machining station, a second jacking device (4) and an extrusion device (5) are arranged on the second machining station, the extrusion device (5) is located above the first jacking device (2), and a transferring device (6) is arranged between the first jacking device (2) and the second jacking device (4). The end ring in the molten state is shaped and extruded through the extrusion device (5), so that bubbles and air holes in the end ring are eliminated, and the quality of the rotor is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of motor rotor production, and in particular relates to an automatic extruder for eliminating air holes in a rotor end ring. Background Art

[0002] The motor rotor is the rotating part of the motor, mainly composed of rotor punchings, rotor end plates, guide bars, rotating shafts, and end rings. The manufacturing process of the motor rotor in the prior art is roughly the following steps: first, a stamping machine punches silicon steel sheets into rotor punchings, and the rotor punchings are then wound by a winding machine to form a rotor blank; second, various components are installed in the rotor blank; finally, aluminum end rings are cast at both ends of the rotor through a centrifugal casting process to play the role of pressing the rotor coil and securing the rotor.

[0003] During the casting process of the end ring, bubbles and pores will be generated inside it. On the one hand, this will make the manufacturing process of the motor rotor substandard. On the other hand, it will cause the dynamic imbalance of the rotor to exceed the standard in the circumferential direction, affecting the quality and use of the motor rotor, and ultimately affecting the working performance and service life of the engine. It is necessary to use the deweighting method or the weighting method for multiple corrections to ensure the dynamic balance of the rotor, resulting in low production efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the technical problems in the prior art that bubbles and pores will be generated inside the rotor end ring during the casting process, affecting the dynamic balance and quality of the rotor, and to provide an automatic extruder for heating the rotor end ring and extruding the end ring in a molten state to eliminate the bubbles and pores inside the end ring, thereby ensuring the dynamic balance and quality of the rotor.

[0005] In order to solve the above technical problems, the present invention provides an automatic extruder for eliminating pores in a rotor end ring, comprising a workbench, on which a first processing station and a second processing station are respectively arranged, the first processing station is provided with a first jacking device and a heating device, and the heating device is located above the first jacking device, the second processing station is provided with a second jacking device and an extrusion device, and the extrusion device is located above the first jacking device, and a transfer device is arranged between the first jacking device and the second jacking device.

[0006] As a further improvement measure of the present invention, the above-mentioned transfer device includes a drag plate, and a driving mechanism for driving the drag plate to reciprocate between the first jacking device and the second jacking device, a limiting groove is provided on the upper surface of the drag plate, a lower shaping block is arranged in the limiting groove, and a first groove corresponding to the lower end ring of the rotor is provided in the lower shaping block.

[0007] As a further improvement measure of the present invention, the first lifting device comprises a first push rod and a second driving mechanism for driving the first push rod to move in a longitudinal direction, and a first through hole for the first push rod to pass through is provided in the carriage.

[0008] As a further improvement measure of the present invention, a first fixed frame is provided on the above-mentioned workbench, and the heating device includes a heating coil arranged on the first fixed frame, the interior of the heating coil is arranged as a hollow structure for the rotor to pass through, and a shell is arranged outside the heating coil, and the wiring terminals of the heating coil are connected to the power supply through wires.

[0009] As a further improvement measure of the present invention, the heating temperature of the above-mentioned heating ring is set to 400~650℃.

[0010] As a further improvement measure of the present invention, the second lifting device comprises a second push rod and a driving mechanism 3 for driving the second push rod to move in the longitudinal direction, and a second through hole for the second push rod to pass through is provided in the carriage.

[0011] As a further improvement measure of the present invention, a second fixed frame is arranged on the above-mentioned workbench, and the extrusion device includes an upper shaping block arranged on the second fixed frame, and a driving mechanism four for driving the upper shaping block to move along the longitudinal direction, and a second groove corresponding to the upper end ring of the rotor is opened in the upper shaping block.

[0012] As a further improvement measure of the present invention, a third through hole connected to the second groove is opened in the above-mentioned upper shaping block along its own axial direction, the inner wall of the third through hole is sequentially opened with first exhaust holes along the circumferential direction, the inner wall of the second groove is opened with second exhaust holes along the circumferential direction, and the second exhaust holes are connected to the first exhaust holes.

[0013] As a further improvement measure of the present invention, the above-mentioned second push rods are respectively provided with limit blocks, and annular limit grooves are formed between the limit blocks. A pad block and a driving mechanism five for driving the pad block to move toward the second push rod are arranged under the drag plate. The pad block is arranged as a "U"-shaped structure, and its open end corresponds to the annular limit groove. When the driving mechanism three drives the second push rod to move in the longitudinal direction to the same horizontal height as the annular limit groove and the pad block, the driving mechanism five drives the pad block to be inserted into the annular limit groove.

[0014] As a further improvement measure of the present invention, the lower surface of the cushion block is in contact with the upper surface of the workbench.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention heats the rotor end ring through a heating device, and shapes and extrude the end ring in a molten state through an extrusion device, so that the bubbles and pores inside the end ring are discharged from the first exhaust hole and the second exhaust hole connected to each other opened in the upper shaping block during the extrusion process, so as to eliminate the bubbles and pores inside the end ring, ensure the process of the motor rotor, and the dynamic balance of the rotor in the circumferential direction meets the standard, improve production efficiency, and improve the quality of the rotor; 2. The present invention can realize the movement of the rotor to be processed between the heating device and the extrusion device by arranging a first lifting device, a second lifting device, and a transfer device between the first lifting device and the second lifting device, so as to form an integrated automatic processing procedure and improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view of the present invention.

[0017] Figure 2 It is the front view of the present invention.

[0018] Figure 3 It is an enlarged stereoscopic view of the transfer device in the present invention.

[0019] Figure 4 It is an enlarged top view of the transfer device in the present invention.

[0020] Figure 5 It is an enlarged stereoscopic view of the first lifting device and the heating device in the present invention.

[0021] Figure 6 It is an enlarged front view of the first lifting device and the heating device in the present invention.

[0022] Figure 7 It is an enlarged stereoscopic view of the second lifting device and the extrusion device in the present invention.

[0023] Figure 8 It is an enlarged front view of the second lifting device and the extrusion device in the present invention.

[0024] Fig. 9 It is an enlarged stereoscopic view of the extrusion device in the present invention.

[0025] Fig.10 It is an enlarged front view of the extrusion device in the present invention.

[0026] Fig.11 It is an enlarged stereogram of the upper shaping block in the present invention.

[0027] Fig.12 It is an enlarged bottom view of the upper shaping block in the present invention.

[0028] Fig.13 yes Fig.12AA section view in.

[0029] Description of the accompanying figures: 1-working table, 2-first lifting device, 3-heating device, 4-second lifting device, 5-extrusion device, 6-transfer device, 7-drag plate, 9-limiting groove, 10-lower shaping block, 11-first groove, 12-first ejector, 13-driving mechanism II, 14-first through hole, 15-first fixing frame, 16-heating ring, 17-shell, 18-second ejector, 19-driving mechanism III, 20-second through hole, 21-second fixing frame, 22-upper shaping block, 23-driving mechanism IV, 24-second groove, 25-third through hole, 26-first exhaust hole, 27-second exhaust hole, 28 -limit block, 29-annular limit groove, 30-pad, 31-driving mechanism five, 32-slide rail, 33-slider, 34-first fixed plate, 35-fourth through hole, 36-first support rod, 37-first top plate, 38-first sliding sleeve, 39-screw, 40-screw nut, 41-seventh through hole, 42-eighth through hole, 43-second bearing, 44-first synchronous wheel, 45-second synchronous wheel, 46-belt, 47-second fixed plate, 48-ninth through hole, 49-second support rod, 50-second top plate, 51-second sliding sleeve, 52-first positioning pin, 53-second positioning pin, 54-tenth through hole. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. Those skilled in the art can fully understand the present invention without the description of these details.

[0033] like Figure 1 , Figure 2 , Figure 6 and Figure 7The automatic extruder for eliminating pores in the rotor end ring shown in the figure comprises a workbench 1, on which a first processing station and a second processing station are respectively arranged. The first processing station is provided with a first jacking device 2 and a heating device 3, and the heating device 3 is located above the first jacking device 2, and the heating device 3 is used to heat the upper end ring of the rotor to make it in a molten state; the second processing station is provided with a second jacking device 4 and an extrusion device 5, and the extrusion device 5 is located above the first jacking device 2, and the extrusion device 5 is used to shape and extrude the upper end ring of the rotor to exhaust it. A transfer device 6 is arranged between the first jacking device 2 and the second jacking device 4, and the transfer device 6 is used to realize the transfer of the rotor between the first processing station and the second processing station.

[0034] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the transfer device 6 includes a carriage 7 and a driving mechanism 1 for driving the carriage 7 to reciprocate between the first jacking device 2 and the second jacking device 4. The driving mechanism 1 can be set as a servo motor or a rodless cylinder. In this embodiment, a slide rail 32 is arranged on the workbench 1 along the driving direction of the driving mechanism 1, and a slider 33 is arranged on the lower surface of the carriage 7. The sliding cooperation between the slide rail 32 and the slider 33 ensures the movement accuracy of the carriage 7.

[0035] like Figure 1 , Figure 3 and Figure 5 As shown, the upper surface of the carriage 7 is provided with a limit groove 9, and a lower shaping block 10 is arranged in the limit groove 9. A first groove 11 corresponding to the lower end ring of the rotor is provided in the lower shaping block 10. Since the lower shaping block 10 and the rotor placed on its upper surface need to be lifted to the heating device 3 and the extrusion device 5, the lower shaping block 10 is not connected to the carriage 7. The lower shaping block 10 is only placed on the carriage 7. The lower shaping block 10 can be limited by the limit groove 9 to determine the position of the rotor. After being transferred to the first processing station and the second processing station, it can correspond to the heating device 3 and the extrusion device 5.

[0036] In this embodiment, first positioning pins 52 are respectively provided in the limiting grooves 9, and a first positioning groove for the first positioning pin 52 to be inserted is opened in the lower shaping block 10. Through the snap-fit ​​cooperation between the first positioning pin 52 and the first positioning groove, on the one hand, the position of the lower shaping block 10 on the drag plate 7 can be further restricted, and on the other hand, the lower shaping block 10 can be circumferentially limited to facilitate the cooperation between the lower shaping block 10 and the first lifting device 2 and the second lifting device 4.

[0037] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the first lifting device 2 includes a first push rod 12 and a second driving mechanism 13 for driving the first push rod 12 to move in the longitudinal direction. The second driving mechanism 13 is configured as a servo motor, and a first fixing plate 34 for mounting the second driving mechanism 13 is provided under the workbench 1.

[0038] In this embodiment, four first push rods 12 are arranged, which are evenly distributed along the circumferential direction of the lower shaping block 10. A second positioning pin 53 is arranged at the upper end of each first push rod 12, and a second positioning groove for the second positioning pin 53 to be inserted is respectively provided on the lower surface of the lower shaping block 10. Four fourth through holes 35 corresponding to the first push rods 12 are respectively provided in the workbench 1, and four first through holes 14 corresponding to the first push rods 12 are respectively provided in the drag plate 7. Driven by the second driving mechanism 13, the upper end of the first push rod 12 passes through the fourth through hole 35 and the first through hole 14 in sequence, and the second positioning pin 53 at the upper end thereof is inserted into the second positioning groove of the lower shaping block 10 for positioning, thereby driving the lower shaping block 10 to move upward toward the heating device 3, and transferring the rotor to the heating device 3 for heating the upper end ring.

[0039] In order to achieve the installation and fixation of the first push rod 12 and ensure the movement accuracy of the lower shaping block 10, in this embodiment, a first support rod 36 is relatively arranged between the first fixed plate 34 and the workbench 1 along the longitudinal direction, and a first top plate 37 is slidably arranged on the first support rod 36, that is, a fifth through hole is opened in the first top plate 37 for the first support rod 36 to pass through, and a first sliding sleeve 38 is arranged in the fifth through hole to ensure the sliding fit between the first top plate 37 and the first support rod 36.

[0040] The lower end of the first push rod 12 is fixed on the first top plate 37, and a sixth through hole for the screw rod 39 to pass through is opened in the central part of the first top plate 37. A screw nut 40 rotatably matched with the screw rod 39 is also arranged in the sixth through hole. The upper end of the screw rod 39 passes through a seventh through hole 41 opened on the workbench 1, and a first bearing is arranged between the seventh through hole 41 and the screw rod 39. An eighth through hole 42 for the screw rod 39 to pass through is opened in the first fixed plate 34, and a second bearing 43 is arranged between the eighth through hole 42 and the screw rod 39. The lower end of the screw rod 39 after passing through the eighth through hole 42 is sleeved with a first synchronous wheel 44, the output end of the driving mechanism 2 13 is sleeved with a second synchronous wheel 45, and a belt 46 is arranged between the first synchronous wheel 44 and the second synchronous wheel 45. The power transmission of the driving mechanism 13 is realized through the belt 46, so that the screw 39 rotates, so that the first top plate 37 drives the first top rod 12 to move upward or downward in the longitudinal direction, thereby completing the transportation and resetting of the rotor placed on the lower shaping block 10.

[0041] like Figure 1 , Figure 5 and Figure 6As shown, a first fixing frame 15 is provided on the workbench 1, and the heating device 3 includes a heating coil 16 provided on the first fixing frame 15. The connection terminal of the heating coil 16 is connected to the power supply through a wire. The interior of the heating coil 16 is provided with a hollow structure for the rotor to pass through. The exterior of the heating coil 16 is provided with a shell 17. The provision of the shell 17 can protect the heating coil 16 on the one hand, and can prevent the operator from touching the heating coil 16 during operation and causing damage on the other hand. In order to ensure that the upper end ring of the rotor is in a molten state after heating, and the heating of the heating coil 16 does not affect the rotor body, the heating temperature of the heating coil 16 can be set to 450°C, 600°C or 650°C.

[0042] like Figure 1 , Figure 4 , Figure 7 and Figure 8 As shown, the second lifting device 4 includes a second push rod 18, and a driving mechanism 3 19 for driving the second push rod 18 to move in the longitudinal direction. The driving mechanism 3 19 is set as a servo motor, and a second fixing plate 47 for mounting the driving mechanism 3 19 is set below the workbench 1. A ninth through hole 48 corresponding to the second push rod 18 is opened in the workbench 1, and a second through hole 20 corresponding to the second push rod 18 is also opened in the carriage 7. Under the drive of the driving mechanism 3 19, the upper end of the second push rod 18 passes through the ninth through hole 48 and the second through hole 20 in sequence, and is inserted into the tenth through hole 54 of the lower shaping block 10 for positioning, thereby driving the lower shaping block 10 to move upward toward the extrusion device 5, and transferring the rotor to the extrusion device 5 for shaping and extruding the upper end ring.

[0043] like Fig. 9 and Fig.10 As shown, in this embodiment, the upper end of the second push rod 18 is set to be a truncated cone, and its diameter gradually decreases from the end facing the driving mechanism three 19 to the end away from the driving mechanism three 19, so that its outer peripheral surface is an inclined guide surface, which can facilitate the upper end of the second push rod 18 to be inserted into the tenth through hole 54 of the lower shaping block 10, thereby completing the connection and positioning between the lower shaping block 10 and the second push rod 18.

[0044] like Figures 7 to 10As shown, in order to realize the installation and fixation of the second push rod 18 and ensure the movement accuracy of the lower shaping block 10, in this embodiment, a second support rod 49 is relatively arranged between the second fixing plate 47 and the workbench 1 in the longitudinal direction, and a second push plate 50 is slidably arranged on the second support rod 49, that is, an eleventh through hole for the second support rod 49 to pass through is provided in the second push plate 50, and a second sliding sleeve 51 is arranged in the eleventh through hole to ensure the sliding fit between the second push plate 50 and the second support rod 49. The output end of the driving mechanism three 19 is connected to the lower surface of the second push plate 50, and the lower end of the second push rod 18 is fixed to the upper surface of the second push plate 50. Under the drive of the driving mechanism three 19, the second push plate 50 drives the second push rod 18 to move upward or downward in the longitudinal direction, completing the transportation and resetting of the rotor placed on the lower shaping block 10.

[0045] like Figure 1 , Figure 7 and Figure 8 As shown, a second fixing frame 21 is provided on the workbench 1, and the extrusion device 5 includes an upper shaping block 22 provided on the second fixing frame 21, and a driving mechanism 23 for driving the upper shaping block 22 to move in the longitudinal direction, and the driving mechanism 23 is configured as a servo motor. Driven by the driving mechanism 23, the upper shaping block 22 moves downward in the longitudinal direction, and after the inner wall of the second groove 24 provided in the upper shaping block 22 contacts the upper end ring of the rotor, the driving mechanism 23 continues to drive the upper shaping block 22 to move downward for a distance, so as to achieve the purpose of extruding and shaping the upper end ring of the rotor in a molten state after heating, and reshape the upper end ring of the rotor into the shape and structure of the second groove 24.

[0046] like Figures 11 to 13 As shown, in order to eliminate and discharge the pores existing in the upper end ring of the rotor during the extrusion shaping process, in this embodiment, a third through hole 25 connected to the second groove 24 is opened in the upper shaping block 22 along its own axial direction, and the inner wall of the third through hole 25 is sequentially opened with first exhaust holes 26 along the circumferential direction. The first exhaust holes 26 can be set to 2 or 3 groups, and the number of each group can be 3, 4 or 5, which are distributed in sequence along the circumferential direction of the third through hole 25; the inner wall of the second groove 24 is opened with second exhaust holes 27 along the circumferential direction, and correspondingly, the second exhaust holes 27 can be set to 2 or 3 groups, and the number of each group can be 3, 4 or 5, which are distributed in sequence along the circumferential direction of the second groove 24, as long as it can be ensured that the second exhaust holes 27 are connected to the first exhaust holes 26.

[0047] As shown Figure 3 , Figure 7 , Fig. 9 and Fig.10As shown, in order to ensure the effect of reshaping and exhausting the upper end ring of the rotor, the driving mechanism 3 19 drives the lower shaping block 10 to press downward with a relatively large pressure of 25 tons. Therefore, in order to avoid damage to the second jacking device 4, the second mandrel 18 is respectively provided with a limit block 28 in this embodiment, and an annular limit groove 29 is formed between the limit blocks 28. A cushion block 30 is arranged below the carriage 7, and a driving mechanism 5 31 for driving the cushion block 30 to move toward the second mandrel 18. The driving mechanism 5 31 can be set as a servo motor or a cylinder.

[0048] The cushion block 30 is set to a "U"-shaped structure, with its open end corresponding to the annular limiting groove 29, and its lower surface in contact with the upper surface of the workbench 1. When the driving mechanism three 19 drives the second push rod 18 to move in the longitudinal direction to the same level as the annular limiting groove 29 and the cushion block 30, the driving mechanism five 31 drives the cushion block 30 to snap into the annular limiting groove 29, and sequentially converts the force of the second lifting device 4 to the surface of the workbench 1, so as to expand the force area and reduce the influence of the pressure of the driving mechanism three 19 on the second lifting device 4.

[0049] The above describes the embodiments of the present invention in detail in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. For ordinary technicians in this field, several modifications and improvements can be made without departing from the present invention, and these should also be regarded as belonging to the protection scope of the present invention.

Claims

1. An automatic extruder for eliminating pores in rotor end rings, comprising a workbench (1), characterized in that: The workbench (1) is respectively provided with a first processing station and a second processing station; the first processing station is provided with a first jacking device (2) and a heating device (3), and the heating device (3) is located above the first jacking device (2); the second processing station is provided with a second jacking device (4) and an extrusion device (5), and the extrusion device (5) is located above the first jacking device (2); and a transfer device (6) is provided between the first jacking device (2) and the second jacking device (4).

2. The automatic extruder for eliminating pores in rotor end rings according to claim 1, characterized in that: The transfer device (6) comprises a carriage (7) and a driving mechanism for driving the carriage (7) to reciprocate between the first lifting device (2) and the second lifting device (4); a limit groove (9) is provided on the upper surface of the carriage (7); a lower shaping block (10) is provided in the limit groove (9); and a first groove (11) corresponding to the lower end ring of the rotor is provided in the lower shaping block (10).

3. The automatic extruder for eliminating pores in rotor end rings according to claim 2, characterized in that: The first lifting device (2) comprises a first push rod (12) and a second driving mechanism (13) for driving the first push rod (12) to move in a longitudinal direction, and a first through hole (14) for the first push rod (12) to pass through is provided in the carriage (7).

4. The automatic extruder for eliminating pores in rotor end rings according to claim 3 is characterized in that: A first fixing frame (15) is arranged on the workbench (1), and the heating device (3) comprises a heating coil (16) arranged on the first fixing frame (15), the interior of the heating coil (16) being arranged as a hollow structure for the rotor to pass through, and the exterior of the heating coil (16) being arranged as a shell (17), and the connection terminals of the heating coil (16) are connected to a power source via a wire.

5. The automatic extruder for eliminating pores in rotor end rings according to claim 4, characterized in that: The heating temperature of the heating ring (16) is set to 400-650°C.

6. The automatic extruder for eliminating pores in rotor end rings according to claim 3, characterized in that: The second lifting device (4) comprises a second push rod (18) and a third driving mechanism (19) for driving the second push rod (18) to move in a longitudinal direction, and a second through hole (20) for the second push rod (18) to pass through is provided in the carriage (7).

7. The automatic extruder for eliminating pores in rotor end rings according to claim 6, characterized in that: A second fixing frame (21) is arranged on the workbench (1), and the extrusion device (5) comprises an upper shaping block (22) arranged on the second fixing frame (21), and a driving mechanism (23) for driving the upper shaping block (22) to move in a longitudinal direction, and a second groove (24) corresponding to the upper end ring of the rotor is formed in the upper shaping block (22).

8. The automatic extruder for eliminating pores in rotor end rings according to claim 7, characterized in that: A third through hole (25) connected to the second groove (24) is provided in the upper shaping block (22) along its axial direction, the inner wall of the third through hole (25) is provided with first exhaust holes (26) in sequence along the circumferential direction, the inner wall of the second groove (24) is provided with second exhaust holes (27) along the circumferential direction, and the second exhaust holes (27) are connected to the first exhaust holes (26).

9. The automatic extruder for eliminating pores in rotor end rings according to claim 7, characterized in that: The second push rod (18) is respectively provided with a limit block (28), and an annular limit groove (29) is formed between the limit blocks (28). A cushion block (30) and a driving mechanism five (31) for driving the cushion block (30) to move toward the second push rod (18) are provided below the drag plate (7). The cushion block (30) is provided in a "U"-shaped structure, and its open end corresponds to the annular limit groove (29). When the driving mechanism three (19) drives the second push rod (18) to move in the longitudinal direction until the annular limit groove (29) and the cushion block (30) are at the same level, the driving mechanism five (31) drives the cushion block (30) to snap into the annular limit groove (29).

10. The automatic extruder for eliminating pores in rotor end rings according to claim 9, characterized in that: The lower surface of the cushion block (30) is in contact with the upper surface of the workbench (1).

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