Pressing device

Abstract

The utility model discloses a pressing device, and relates to the technical field of rotor conducting bar pressing, and the pressing device comprises a bracket, an ejector rod mechanism and a pressing mechanism. Wherein the rotor iron core is placed on the bracket; the ejector rod mechanism is arranged on one side of the bracket in the first direction, the ejector rod mechanism comprises a support and an ejector rod arranged on the support, and the ejector rod can move relative to the support in the first direction so as to abut against the rotor iron core; and the pressing mechanism is arranged on the other side of the bracket along the first direction, the pressing mechanism comprises a support and a pressing head arranged on the support, and the pressing head can move relative to the support along the first direction and a second direction perpendicular to the first direction so as to extrude the conducting bar, so that the conducting bar is fastened in the iron core groove of the rotor iron core. According to the pressing device, the fastening forces of the conducting bars at different parts on the rotor can be kept consistent, so that the stability of the fastening quality of the conducting bars is ensured, the labor intensity of personnel can be reduced, the working efficiency can be improved, and in addition, the environmental noise can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of rotor bar clamping, and in particular to a clamping device. Background Art

[0002] Currently, after the rotor bars (also called copper bars) are inserted into the core slots, the bars need to be fastened in the core slots to meet the working requirements of the motor.

[0003] In the existing system, the method of fixing the guide bar is to use a pneumatic riveting gun to intermittently rivet along the length direction of the guide bar, so that the guide bar is deformed at the riveted position, thereby tightening with the core slot to achieve the purpose of tightening.

[0004] However, in the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0005] First, the guide bars are fastened manually, and it is difficult to ensure consistent fastening force at different parts of the same rotor, which can easily lead to quality problems such as uneven tightness of the guide bars, resulting in the inability to ensure the stability of the fastening quality. Second, when there are many guide bars on a motor, continuous impact riveting is required, which will result in high labor intensity, low work efficiency and high labor costs. Third, riveting generates a lot of noise, which can easily lead to excessive environmental noise.

[0006] Therefore, it is necessary for those skilled in the art to provide a clamping device in a timely manner that can ensure the stability of the fastening quality of the guide bar, improve work efficiency, and reduce environmental noise. Utility Model Content

[0007] The purpose of the present application is to provide a clamping device, which can ensure the stability of the fastening quality of the guide bar, improve work efficiency and reduce environmental noise.

[0008] To achieve the above objectives, the present application provides a pressing device, comprising:

[0009] A bracket, which is used to place the rotor core;

[0010] A push rod mechanism, which is arranged on one side of the bracket along the first direction, and comprises a bracket and a push rod arranged on the bracket, and the push rod can move relative to the bracket along the first direction to push against the rotor core;

[0011] The clamping mechanism is arranged on the other side of the bracket along the first direction. The clamping mechanism includes a support and a pressure head arranged on the support. The pressure head can move relative to the support along the first direction and a second direction perpendicular to the first direction to squeeze the guide bar so that the guide bar is fastened in the core slot of the rotor core.

[0012] In some embodiments, the push rod mechanism further comprises:

[0013] A lead screw assembly is disposed on the bracket and connected to the push rod to drive the push rod to move along the first direction;

[0014] A push rod transmission assembly is arranged on the bracket and connected with the lead screw assembly to drive the lead screw assembly to operate;

[0015] The push rod driving assembly is arranged on the bracket and connected with the push rod transmission assembly to drive the push rod transmission assembly to operate.

[0016] In some embodiments, the number of the lead screw assembly is two groups, and the push rod transmission assembly includes:

[0017] Two worm gear transmission boxes, the two worm gear transmission boxes are respectively connected to the two sets of lead screw assemblies;

[0018] A bevel gear reversing box, the input shaft of which is connected to a push rod driving assembly, and two output shafts of which are respectively connected to two worm gear transmission boxes.

[0019] In some embodiments, the bracket is a height-adjustable bracket, and a roller assembly is provided on the bracket, and the roller assembly is used to support the rotor core so that the rotor core rotates around the axis of the second direction.

[0020] In some embodiments, the pressing head includes a rolling wheel, and the rolling wheel can rotate around an axis in a third direction perpendicular to the first direction and the second direction to roll the conductive bars on the rotor core.

[0021] In some embodiments, a hydraulic control system is further included, wherein the hydraulic control system is connected to the pressure head and the push rod to control the pressure head to move along the first direction and control the push rod to stop moving.

[0022] In some embodiments, the push rod mechanism further comprises:

[0023] At least two guide rods, at least two guide rods are movably connected to the bracket, and at least two guide rods are connected to the push rod to guide the push rod when the push rod moves;

[0024] At least two groups of ejector rod stop assemblies are connected to the hydraulic control system to clamp the corresponding guide rods to stop the ejector rods from moving.

[0025] In some embodiments, the clamping mechanism further includes a pressure head box assembly, which is disposed on a support and includes:

[0026] A telescopic drive assembly, the telescopic drive assembly is connected to the pressure head and the hydraulic control system to drive the pressure head to move along the first direction;

[0027] A chain transmission assembly, the chain transmission assembly is connected to the telescopic drive assembly to drive the telescopic drive assembly and the pressure head to move along the second direction;

[0028] A driving motor connected to the chain drive assembly to provide a driving force for the chain drive assembly;

[0029] A linear guide rail is arranged along the second direction, and the pressure head is installed in the linear guide rail.

[0030] In some embodiments, the hydraulic control system includes:

[0031] A first control oil circuit, the first control oil circuit is connected to the telescopic drive assembly to control the operation of the telescopic drive assembly;

[0032] A second control oil circuit, the second control oil circuit is connected to at least two sets of ejector rod stop assemblies to control the operation of the at least two sets of ejector rod stop assemblies;

[0033] The pressing device also includes an air circuit control system, which includes:

[0034] A first control gas circuit, wherein the first control gas circuit is provided with a first pressure regulating valve, a first solenoid valve, and a first supercharger, and the first supercharger is connected to the first control oil circuit, and a compressed gas enters the first supercharger through the first pressure regulating valve and the first solenoid valve, and enters the first control oil circuit after being pressurized by the first supercharger, so as to open the first control oil circuit and control the extension of the pressure head;

[0035] The second control air circuit is provided with a second pressure regulating valve, a second solenoid valve and a second supercharger. The second supercharger is connected to the second control oil circuit. Another compressed gas enters the second supercharger through the second pressure regulating valve and the second solenoid valve, and enters the second control oil circuit after being pressurized by the second supercharger, so as to open the second control oil circuit and control at least two sets of push rod stop assemblies to clamp the corresponding guide rods.

[0036] In some embodiments, the pressure head box assembly is installed on the support through the core shaft, and the pressure head box assembly can swing relative to the support to fasten the guide bars in the oblique core slots of the rotor core.

[0037] With respect to the above background technology, the clamping device provided in the embodiment of the present application includes a bracket, a push rod mechanism and a clamping mechanism. The rotor core is placed on the bracket; the push rod mechanism is arranged on one side of the bracket along the first direction, the push rod mechanism includes a bracket and a push rod arranged on the bracket, the push rod can move relative to the bracket along the first direction to press against the rotor core; the clamping mechanism is arranged on the other side of the bracket along the first direction, the clamping mechanism includes a support and a pressure head arranged on the support, the pressure head can move relative to the support along the first direction and a second direction perpendicular to the first direction to squeeze the guide bar so that the guide bar is fastened in the core slot of the rotor core. It can be seen that when the clamping device is working, first, the rotor core is placed on the bracket, and then, the rotor core is pressed against the bracket on one side along the first direction by an adjustable push rod, and on the other side of the bracket along the first direction (that is, the opposite side of the push rod mechanism), the pressure head is moved along the first direction to squeeze the guide bar, and the pressure head is moved along the second direction at the same time, so that the guide bar can be deformed in the core slot, thereby achieving the purpose of fastening the guide bar in the core slot without axial movement. Compared with the traditional manual riveting method, the clamping device provided in the embodiment of the present application can make the guide bar fastening force of different parts on the rotor consistent, thereby ensuring the stability of the guide bar fastening quality, and can reduce the labor intensity of personnel and improve work efficiency. In addition, it can also reduce environmental noise and solve the problem of excessive environmental noise caused by large noise generated during riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0039] Figure 1 A side view of the clamping device in the embodiment of the present application;

[0040] Figure 2 This is a front view of the clamping device in the embodiment of the present application;

[0041] Figure 3 for Figure 1 A schematic diagram of a bracket in the clamping device shown;

[0042] Figure 4 for Figure 3 a side view of the bracket shown;

[0043] Figure 5 for Figure 1 A schematic diagram of a push rod mechanism in the clamping device shown;

[0044] Figure 6 for Figure 5 A top view of the ejector mechanism shown;

[0045] Figure 7 for Figure 1 A schematic diagram of a pressure head box assembly in the clamping mechanism shown;

[0046] Figure 8 It is a schematic diagram of the assembly of the pressure head and the telescopic drive assembly;

[0047] Fig. 9 for Figure 8 a side view of the structure shown;

[0048] Fig.10 for Figure 8 a top view of the structure shown;

[0049] Fig.11 This is a schematic diagram of the pneumatic and hydraulic control principles of the clamping device in the embodiment of the present application.

[0050] in:

[0051] 1-bracket, 11-first support seat, 12-second support seat, 13-supporting screw, 14-roller assembly;

[0052] 2-rod mechanism, 21-bracket, 22-rod, 23-screw assembly, 24-rod transmission assembly, 241-worm gear transmission box, 242-bevel gear reversing box, 25-rod drive assembly, 26-guide rod, 27-rod stop assembly, 28-limit switch;

[0053] 3-pressing mechanism, 31-support, 32-pressing head, 321-rolling wheel, 33-pressing head box assembly, 331-telescopic drive assembly, 332-chain drive assembly, 333-drive motor, 334-linear guide rail, 34-mandrel;

[0054] 4- Base;

[0055] 5- hydraulic control system, 51- first control oil circuit, 52- second control oil circuit;

[0056] 6-air circuit control system, 61-first control air circuit, 611-first pressure regulating valve, 612-first solenoid valve, 613-first supercharger, 62-second control air circuit, 621-second pressure regulating valve, 622-second solenoid valve, 623-second supercharger, 63-pressure stabilizing tank, 64-pneumatic two-piece. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0058] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0059] It should be noted that the directional words such as "upper end, lower end, left side, right side" described below are all defined based on the drawings in the specification.

[0060] See also Figure 1 and Figure 2 The clamping device provided in the embodiment of the present application includes a bracket 1, a push rod mechanism 2 and a clamping mechanism 3.

[0061] Among them, the rotor core is placed on the bracket 1; the push rod mechanism 2 is arranged on one side of the bracket 1 along the first direction, the push rod mechanism 2 includes a bracket 21 and a push rod 22 arranged on the bracket 21, the push rod 22 can move relative to the bracket 21 along the first direction to press against the rotor core; the clamping mechanism 3 is arranged on the other side of the bracket 1 along the first direction, the clamping mechanism 3 includes a support 31 and a pressure head 32 arranged on the support 31, the pressure head 32 can move relative to the support 31 along the first direction and a second direction perpendicular to the first direction to squeeze the guide bar so that the guide bar is fastened in the core slot of the rotor core.

[0062] It should be noted that the so-called first direction is Figure 1 The second direction is the horizontal direction shown, that is, the axial direction of the rotor core after the rotor core is placed on the bracket 1, or the length direction of the rotor core.

[0063] It can be seen that when the clamping device is working, first, the rotor core is placed on the bracket 1, and then, the rotor core is pressed against by the adjustable push rod 22 on one side of the bracket 1 along the first direction, and on the other side of the bracket 1 along the first direction (that is, the opposite side of the push rod mechanism 2), the pressure head 32 is moved along the first direction to squeeze the guide bar, and the pressure head 32 is moved along the second direction at the same time, so that the guide bar can be deformed in the core slot, thereby achieving the purpose of fastening the guide bar in the core slot and preventing the guide bar from moving axially.

[0064] Compared with the traditional manual riveting method, the clamping device provided in the embodiment of the present application adopts a dynamic method to squeeze the guide bar along the radial direction of the rotor core and to roll the guide bar along the axial direction of the rotor core, so that the guide bar is deformed toward the outside, thereby tightening the guide bar in the core slot to achieve the purpose of tightening the guide bar.

[0065] In order to facilitate the fixing of the support bracket 1, the push rod mechanism 2 and the clamping mechanism 3, the clamping device also includes a base 4, which is used to install the support 31 of the clamping mechanism 3, the bracket 21 of the push rod mechanism 2 and the bracket 1. The support 31 is a right-angle support 31, and the support 31, the bracket 21 and the bracket 1 are all installed on the base 4 by bolts. In addition, a guide rail with a T-slot is provided in the middle of the base 4 for installing the bracket 1. Of course, in order to ensure the stability of the support, the number of brackets 1 can be two or more.

[0066] The above-mentioned setting method can make the guide bar tightening force at different parts of the rotor consistent, thereby ensuring the stability of the guide bar tightening quality, and can reduce the labor intensity of personnel and improve work efficiency. In addition, it can also reduce environmental noise and solve the problem of excessive environmental noise caused by loud noise generated during riveting.

[0067] Please also read Figure 3 and Figure 4 The bracket 1 is a height-adjustable bracket 1. Meanwhile, a roller assembly 14 is provided on the bracket 1, and the roller assembly 14 is used to support the rotor core so that the rotor core rotates around the axis of the second direction.

[0068] Specifically, the bracket 1 includes a first support seat 11, a second support seat 12, a support screw 13 and a roller assembly 14. The first support seat 11 is connected to the base 4 by bolts, the second support seat 12 is connected to the first support seat 11, and the support screw 13 is installed in the middle of the second support seat 12. The nut of the support screw 13 is placed in the middle of the second support seat 12, and the nut of the support screw 13 is rotated, so that the screw and roller part of the support screw 13 can move up and down, and the roller assembly 14 includes two rollers, and the two rollers are used to place the rotating iron core, and the rotating iron core can rotate on the rollers to realize the circumferential rotation of the iron core slot.

[0069] Please also read Figure 5 and Figure 6 In order to facilitate the adjustment of the ejector rod 22 along the first direction, the ejector rod mechanism 2 further includes a lead screw assembly 23, an ejector rod transmission assembly 24 and an ejector rod driving assembly 25.

[0070] Among them, the screw assembly 23, the push rod transmission assembly 24 and the push rod driving assembly 25 are all arranged on the bracket 21, the screw assembly 23 is connected to the push rod 22 to drive the push rod 22 to move along the first direction, the push rod transmission assembly 24 is connected to the screw assembly 23 to drive the screw assembly 23 to operate, and the push rod driving assembly 25 is connected to the push rod transmission assembly 24 to drive the push rod transmission assembly 24 to operate.

[0071] That is to say, the driving force is provided by the push rod driving assembly 25, and the push rod transmission assembly 24 transmits the movement and power of the push rod driving assembly 25 to the screw assembly 23, so as to achieve the purpose of driving the push rod 22 to move along the first direction.

[0072] In order to improve the stability of the movement of the top rod 22 , there are two groups of screw assemblies 23 , and the two groups of screw assemblies 23 are connected to one side of the top rod 22 oppositely.

[0073] Specifically, the push rod transmission assembly 24 includes a bevel gear reversing box 242 and two worm gear transmission boxes 241. The worm gear transmission box 241 is provided with a worm gear transmission mechanism, and the two worm gear transmission boxes 241 are respectively connected to the two sets of lead screw assemblies 23 by transmission, and the bevel gear reversing box 242 is provided with a bevel gear transmission mechanism, and the input shaft of the bevel gear reversing box 242 is connected to the push rod driving assembly 25, and the two output shafts of the bevel gear reversing box 242 are respectively connected to the two worm gear transmission boxes 241.

[0074] Of course, according to actual needs, the push rod driving assembly 25 can be an asynchronous motor.

[0075] In this embodiment, the output shaft of the asynchronous motor is connected to the input shaft of the bevel gear reversing box 242, the input shaft of the bevel gear reversing box 242 is connected to the bevel gear transmission mechanism, the two output shafts of the bevel gear transmission mechanism are respectively connected to the worms of the two worm gear transmission mechanisms, the worm wheels of the two worm gear transmission mechanisms are respectively connected to the nuts of the two screw assemblies 23, and the screws of the two screw assemblies 23 are connected to the push rod 22. In this way, the screws of the two screw assemblies 23 and the push rod 22 can be driven to move along the first direction by the operation of the nuts of the two screw assemblies 23.

[0076] In order to facilitate guiding the push rod 22 when the push rod 22 moves, the push rod mechanism 2 also includes at least two guide rods 26, at least two guide rods 26 are movably connected to the bracket 21, and at least two guide rods 26 are connected to the push rod 22 to guide the push rod 22 when the push rod 22 moves.

[0077] It should be noted that the two guide rods 26 are respectively disposed on the outside of the two screw rods and are arranged parallel to the two screw rods. The two guide rods 26 can be connected to the two ends of the top rod 22 respectively.

[0078] In order to facilitate the timely stopping of the push rod 22, the push rod mechanism 2 also includes at least two groups of push rod stopping assemblies 27. The push rod stopping assemblies 27 and the guide rods 26 are arranged in a one-to-one correspondence. At least two groups of push rod stopping assemblies 27 are controlled by the hydraulic control system 5. When the push rod 22 needs to be stopped, at least two groups of push rod stopping assemblies 27 respectively clamp the corresponding guide rods 26 to stop the push rod 22 from moving.

[0079] Of course, according to actual needs, the number of push rod stop assemblies 27 is set to two groups, and the number of guide rods 26 is set to two. The push rod stop assembly 27 can be a hydraulic clamp assembly. After the hydraulic clamp assembly contracts, it clamps the guide rod 26 to fix the push rod 22. After the hydraulic clamp assembly opens, it releases the guide rod 26 to facilitate the movement of the push rod 22.

[0080] When the position of the push rod 22 needs to be adjusted, the hydraulic control system 5 controls the two groups of hydraulic clamp assemblies to open, and the asynchronous motor is activated to drive the bevel gear reversing box 242 to drive the worm gear transmission box 241 on both sides in two ways, so that the screw assemblies 23 on both sides operate, thereby driving the push rod 22 to move in the first direction. After moving into place, the hydraulic control system 5 controls the two groups of hydraulic clamp assemblies to retract and lock the guide rod 26, so that the rolling work can continue.

[0081] In some embodiments, in order to achieve controllable front and rear positions of the push rod 22, limit switches 28 are provided before and after the guide rod 26 to ensure that the lead screw does not overtravel.

[0082] In addition, in order to make the push rod 22 stop automatically after contacting the rotor core, proximity switches are respectively installed on the contact surface between the push rod 22 and the rotor core. In this way, when the push rod 22 approaches the rotor core, a signal can be sent to the electronic control system / electrical system through the proximity switch, and the electronic control system controls the asynchronous motor to stop running.

[0083] Please also read Figure 8 , Fig. 9 and Fig.10 The pressing head 32 includes a rolling wheel 321, and the rolling wheel 321 can rotate around an axis in a third direction perpendicular to the first direction and the second direction to roll the conductive bars on the rotor core.

[0084] It should be noted that the above third direction is as follows: Figure 1 The vertical direction shown is that the third direction is perpendicular to the horizontal plane where the first direction and the second direction are located.

[0085] That is to say, the rolling wheel 321 can move from one end of the rotor core to the other end along the axial direction of the rotor core to complete the rolling of the guide bar in one core slot.

[0086] Please also read Figure 7In order to facilitate the movement of the pressure head 32, the clamping mechanism 3 also includes a pressure head box assembly 33, which is arranged on the support 31. The pressure head box assembly 33 includes a telescopic drive assembly 331, a chain transmission assembly 332 and a drive motor 333, wherein the telescopic drive assembly 331 is connected to the pressure head 32 to drive the pressure head 32 to move along the first direction. The telescopic drive assembly 331 can be a hydraulic cylinder, and the hydraulic cylinder is controlled by the hydraulic control system 5; the chain transmission assembly 332 is connected to the telescopic drive assembly 331 to drive the telescopic drive assembly 331 and the pressure head 32 to move along the second direction; the drive motor 333 is connected to the chain transmission assembly 332 to provide operating driving force to the chain transmission assembly 332.

[0087] In addition, in order to facilitate the guidance of the movement of the ram 32 , the ram box assembly 33 further includes a linear guide rail 334 . The linear guide rail 334 is arranged along the second direction, and the ram 32 is installed in the linear guide rail 334 .

[0088] Specifically, a variable frequency motor and a reduction gear box are fixed at one end of the pressure head box assembly 33, and three rows of sprockets are installed at the output end of the reduction gear box. A linear guide rail 334 is installed in the middle of the pressure head box assembly 33, and the pressure head 32 is installed in the linear guide rail 334. The two ends of the telescopic drive assembly 331 and the pressure head 32 are respectively connected to the three rows of chains. A reversing three-row sprocket is installed at the other end of the pressure head box assembly 33 for changing the movement direction of the chain to realize the circumferential movement of the chain.

[0089] In this way, by providing driving force through the variable frequency motor, three rows of sprockets and chain transmission, the pressure head 32 can be moved from one end of the pressure head box assembly 33 to the other end along the linear guide rail 334. The linear guide rail 334 is firmly installed to ensure the accuracy of the movement of the pressure head 32.

[0090] The moving speed of the pressure head 32 can be infinitely adjusted by a variable frequency motor.

[0091] In order to ensure safety during operation, protective shields are installed on all transmission parts of the pressure head box assembly 33; at the same time, in order to achieve controllable movement of the pressure head 32, limit switches, monitoring cameras and mounting brackets are set on the protective shields.

[0092] In some embodiments, the clamping device further includes a hydraulic control system 5 , which is connected to the pressing head 32 and the push rod 22 to control the pressing head 32 to move along the first direction and to control the push rod 22 to stop moving.

[0093] Please also read Fig.11The hydraulic control system 5 includes a first control oil circuit 51 and a second control oil circuit 52. The first control oil circuit 51 is connected to the telescopic drive assembly 331 to control the telescopic drive assembly 331 to work, thereby controlling the extension and retraction of the pressure head 32. An output pump (or plunger pump) is provided in the first control oil circuit 51. The output pump is connected to the hydraulic cylinder through a high-pressure hose. To ensure that the oil consumption of the system is compensated, an oil replenishment check valve and an oil replenishment tank are connected at the outlet of the hydraulic pump; the second control oil circuit 52 is connected to at least two groups of push rod stop assemblies 27 to control the work of at least two groups of push rod stop assemblies 27, thereby timely controlling the push rod 22 to stop moving. Another output pump is provided in the first control oil circuit 51. The output pump supplies oil to the hydraulic clamp assemblies on both sides in two ways through a high-pressure hose.

[0094] In order to reduce the temperature rise of the working parts in the hydraulic control system 5, the oil consumption and the noise when the hydraulic mechanism is working, the power of the two output pumps mentioned above comes from the cylinder.

[0095] In some embodiments, the clamping device further includes an air circuit control system 6, which includes a first control air circuit 61 and a second control air circuit 62. The first control air circuit 61 is provided with a first pressure regulating valve 611, a first solenoid valve 612 (a two-position four-way solenoid valve), and a first supercharger 613. The first supercharger 613 is connected to the first control oil circuit 51. A compressed gas enters the first supercharger 613 through the first pressure regulating valve 611 and the first solenoid valve 612, and enters the first control oil circuit 51 after being pressurized by the first supercharger 613, so as to open the first control oil circuit 51 and control the extension of the pressure head 32. The second control air circuit 6 A second pressure regulating valve 621, a second solenoid valve 622 (a two-position four-way solenoid valve), and a second supercharger 623 are provided. The second supercharger 623 is connected to the second control oil circuit 52. Another path of compressed gas enters the second supercharger 623 through the second pressure regulating valve 621 and the second solenoid valve 622, and enters the second control oil circuit 52 after being pressurized by the second supercharger 623, so as to open the second control oil circuit 52 and control at least two sets of ejector rod stopper assemblies 27 to clamp the corresponding guide rods 26.

[0096] It should be noted that the air circuit control system 6 is a system that provides power for the hydraulic cylinder and the hydraulic clamp. After the compressed air comes out of the workshop air source, it first enters the pressure-stabilizing tank 63 for pressure stabilization, and then enters the pneumatic two-way joint 64 for lubrication and pressure reduction, and then is divided into two ways: one way enters the first booster 613 through the first pressure regulating valve 611 and the first solenoid valve 612, and the piston of the first booster 613 pushes the hydraulic piston of the plunger pump in the first control oil circuit 51, and the oil in the hydraulic control system 5 can enter the rear chamber of the hydraulic cylinder through the first control oil circuit 51, so that the pressure head 32 is extended, the first solenoid valve 612 is powered off, and the first booster 613 is activated. The piston retreats, and the hydraulic cylinder returns the pressure head 32 under the action of the spring; the other way enters the second booster 623 through the second pressure regulating valve 621 and the second solenoid valve 622, and the piston of the second booster 623 pushes the hydraulic piston of the plunger pump in the second control oil circuit 52. The oil in the hydraulic control system 5 can control the closing of the hydraulic clamp assembly by the second control oil circuit 52, thereby clamping the guide rod 26, and the second solenoid valve 622 is powered off, the piston of the second booster 623 retreats, and the hydraulic clamp assembly opens, thereby releasing the guide rod 26.

[0097] In order to monitor the pressure in real time, pressure gauges may be provided in the first control air circuit 61 , the second control air circuit 62 , the first control oil circuit 51 , and the second control oil circuit 52 .

[0098] It should be noted that the air pressure value can be indicated by the air pressure gauge, the working air pressure can be adjusted to 0.1-0.5MPa by adjusting the pressure regulating valve according to the process requirements, the boost ratio of the supercharger is 1:64, and the output oil pressure can be indicated by the oil pressure gauge. When the oil consumption in the hydraulic control system 5 is reduced, the hydraulic control system 5 can replenish the oil in the oil storage tank into the control oil circuit through the one-way valve to ensure that there is sufficient oil in the pipeline.

[0099] In order to realize the controllability, adjustment and indication of the gas circuit control system 6, a pressure gauge and a gas pressure regulating valve are arranged on the operating table.

[0100] The above-mentioned air circuit control system 6 is a setting mode for providing power for the hydraulic control system 5, which can reduce the temperature rise of the working parts in the hydraulic system, the oil consumption and the noise when the hydraulic mechanism is working.

[0101] In some embodiments, the pressure head box assembly 33 is installed on the support 31 through the core shaft 34, and the pressure head box assembly 33 can swing relative to the support 31 to fasten the guide bars in the oblique core slots of the rotor core.

[0102] For example, when the core slots on the rotor core are oblique core slots, the center of the pressure head box assembly 33 is installed together with the support 31 through the core shaft 34, and the pressure head box assembly 33 can swing up and down 5° for rolling and tightening the guide bars in the oblique core slots.

[0103] In some embodiments, the clamping device also includes an electrical system, which is the brain that controls the operation of the working parts in the clamping device. The movement of the pressing head 32, the entry and exit of the pressing head 32, the movement of the push rod 22, the clamping, the movement speed of the pressing head 32 and the control of each part are all set in a control cabinet. The equipment air pressure, hydraulic control, pressing head movement inverter, and monitor controller are also set in the cabinet.

[0104] In addition, all the above electrical systems are controlled by independent components, with start and stop buttons set on the surface of the operation panel, and electrical interlocks designed between the movements of the relevant components to ensure that the relevant components do not interfere with each other when they move, ensuring movement safety. The system's relevant limit switches are set on the moving parts of the equipment.

[0105] The working principle of the clamping device with the above arrangement is as follows:

[0106] The rotor core is placed on two brackets 1, with one side of the rotor core resting on the mandrel 22 (rotors of different diameters can be supported by adjusting the front and rear positions of the mandrel 22), and the center of the core slot on the other side is facing the center of the pressure head 32. After adjusting the appropriate rolling pressure according to the width of the core slot and the size of the guide bar, the rolling wheel 321 of the pressure head 32 moves along the radial direction of the rotor core under pressure to extrude the guide bar. At the same time, the rolling wheel 321 moves from one end of the rotor core to the other end along the axial direction of the rotor core under the action of the chain tension to complete the extrusion of one slot. The guide bar is deformed into a groove under the extrusion of the rolling wheel 321, thereby wedging the guide bar in the core slot. Of course, the wedging of the guide bar can be achieved by adjusting the extrusion force of the rolling wheel 321. After one slot is extruded, the rotor core is rotated, and the next slot is rolled and extruded until all slots are rolled.

[0107] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0108] The above is a detailed introduction to the clamping device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the scheme and its core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A clamping device, characterized in that: include: A bracket (1), wherein the bracket (1) is used to place a rotor core; A push rod mechanism (2), the push rod mechanism (2) being arranged on one side of the bracket (1) along a first direction, the push rod mechanism (2) comprising a bracket (21) and a push rod (22) arranged on the bracket (21), the push rod (22) being movable relative to the bracket (21) along the first direction to abut against the rotor core; A clamping mechanism (3), the clamping mechanism (3) being arranged on the other side of the bracket (1) along the first direction, the clamping mechanism (3) comprising a support (31) and a pressing head (32) arranged on the support (31), the pressing head (32) being movable relative to the support (31) along the first direction and a second direction perpendicular to the first direction to squeeze the guide bar so that the guide bar is fastened in the core slot of the rotor core.

2. The pressing device according to claim 1, characterized in that: The push rod mechanism (2) further comprises: A screw assembly (23), wherein the screw assembly (23) is disposed on the bracket (21) and connected to the push rod (22) to drive the push rod (22) to move along the first direction; A push rod transmission assembly (24), the push rod transmission assembly (24) is arranged on the bracket (21) and connected to the lead screw assembly (23) to drive the lead screw assembly (23) to operate; A push rod driving assembly (25), wherein the push rod driving assembly (25) is arranged on the bracket (21) and connected to the push rod transmission assembly (24) to drive the push rod transmission assembly (24) to operate.

3. The pressing device according to claim 2, characterized in that: The number of the lead screw assemblies (23) is two, and the push rod transmission assembly (24) comprises: Two worm gear transmission boxes (241), the two worm gear transmission boxes (241) are respectively connected to the two sets of lead screw assemblies (23) in driving connection; A bevel gear reversing box (242), wherein an input shaft of the bevel gear reversing box (242) is connected to the push rod driving assembly (25), and two output shafts of the bevel gear reversing box (242) are respectively connected to the two worm gear transmission boxes (241).

4. The pressing device according to claim 1, characterized in that: The bracket (1) is a bracket (1) with adjustable height, and a roller assembly (14) is provided on the bracket (1), wherein the roller assembly (14) is used to support the rotor core so that the rotor core rotates around the axis of the second direction.

5. The pressing device according to claim 1, characterized in that: The pressing head (32) comprises a rolling wheel (321), and the rolling wheel (321) can rotate around an axis in a third direction perpendicular to the first direction and the second direction to roll the conductive bars on the rotor core.

6. The pressing device according to any one of claims 1 to 5, characterized in that: It also includes a hydraulic control system (5), which is connected to the pressure head (32) and the push rod (22) to control the pressure head (32) to move along the first direction and control the push rod (22) to stop moving.

7. The pressing device according to claim 6, characterized in that: The push rod mechanism (2) further comprises: at least two guide rods (26), at least two of the guide rods (26) are movably connected to the bracket (21), and at least two of the guide rods (26) are connected to the push rod (22) to guide the push rod (22) when the push rod (22) moves; At least two groups of push rod stop assemblies (27), at least two groups of the push rod stop assemblies (27) are connected to the hydraulic control system (5) to clamp the corresponding guide rods (26) so that the push rod (22) stops moving.

8. The pressing device according to claim 7, characterized in that: The clamping mechanism (3) further comprises a pressure head box assembly (33), wherein the pressure head box assembly (33) is arranged on the support (31), and the pressure head box assembly (33) comprises: a telescopic driving assembly (331), wherein the telescopic driving assembly (331) is connected to the pressure head (32) and the hydraulic control system (5) to drive the pressure head (32) to move along the first direction; a chain transmission assembly (332), wherein the chain transmission assembly (332) is connected to the telescopic drive assembly (331) to drive the telescopic drive assembly (331) and the pressure head (32) to move along the second direction; A driving motor (333), wherein the driving motor (333) is connected to the chain transmission assembly (332) to provide a driving force for the chain transmission assembly (332); A linear guide rail (334), wherein the linear guide rail (334) is arranged along the second direction, and the pressure head (32) is installed in the linear guide rail (334).

9. The pressing device according to claim 8, characterized in that: The hydraulic control system (5) comprises: A first control oil circuit (51), wherein the first control oil circuit (51) is connected to the telescopic drive assembly (331) to control the operation of the telescopic drive assembly (331); A second control oil circuit (52), the second control oil circuit (52) being connected to at least two groups of the ejector rod stop assemblies (27) to control the operation of the at least two groups of the ejector rod stop assemblies (27); The pressing device further comprises an air circuit control system (6), wherein the air circuit control system (6) comprises: A first control gas circuit (61), wherein the first control gas circuit (61) is provided with a first pressure regulating valve (611), a first solenoid valve (612), and a first supercharger (613); the first supercharger (613) is connected to the first control oil circuit (51); a compressed gas enters the first supercharger (613) through the first pressure regulating valve (611) and the first solenoid valve (612), and enters the first control oil circuit (51) after being pressurized by the first supercharger (613), so as to open the first control oil circuit (51) and control the extension of the pressure head (32); A second control air circuit (62), wherein the second control air circuit (62) is provided with a second pressure regulating valve (621), a second solenoid valve (622), and a second supercharger (623); the second supercharger (623) is connected to the second control oil circuit (52); another path of compressed gas enters the second supercharger (623) through the second pressure regulating valve (621) and the second solenoid valve (622), and enters the second control oil circuit (52) after being pressurized by the second supercharger (623), so as to open the second control oil circuit (52) and control at least two groups of the push rod stop assemblies (27) to clamp the corresponding guide rods (26).

10. The pressing device according to claim 8, characterized in that: The pressure head box assembly (33) is installed on the support (31) through a core shaft (34), and the pressure head box assembly (33) can swing relative to the support (31) to achieve fastening of the guide bar in the oblique core slot of the rotor core.

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