A winding device for a field winding of a direct current motor

Abstract

The utility model discloses a direct current motor excitation wire group winding device relates to motor rotor winding is with the field of winding head, including two connecting plates with guide rail, the connecting plate and guide rail axial sliding connection, the lower one -end of connecting plate slides and installs the winding head, the top of winding head is rotatoryly installed with the guide pulley through the support, and one end of winding head is fixedly installed with the mounting panel through bolt, the top fixedly connected with the winding mouth of mounting panel, one side of connecting plate is rotatoryly installed with the compensation pulley through telescopic mechanism, and the compensation pulley is located the top of guide pulley. The utility model discloses a telescopic mechanism and compensation pulley can avoid the state that copper wire appears excessive relaxation or excessive tight, secondly sets up the variable diameter hole, transition cambered surface, end arc surface in the inside both ends of winding mouth, can avoid the abrasion that copper wire appears in the process of winding because of the problem of friction or excessive bending.

Description

Technical Field

[0001] This utility model relates to the field of winding heads for motor rotor winding, specifically a DC motor excitation wire winding device. Background Technology

[0002] Multiple sets of excitation coils are installed on the rotor support of the motor. When current is applied, a magnetic field is generated by electromagnetic induction.

[0003] In the existing technology, the copper wire winding device, together with the reciprocating rotation mechanism that drives the rotor support to reciprocate, realizes the winding of copper wire. During the winding process, since the feeding speed of copper wire and the winding speed are not completely consistent, the copper wire will be in a state of being too loose or too tight, which is not conducive to efficient winding operation. In addition, during the winding process, the copper wire is prone to friction with the end of the winding nozzle or excessive bending, which leads to the problem that the copper wire is easily damaged during the winding process. Utility Model Content

[0004] The purpose of this utility model is to provide a DC motor excitation wire winding device in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a DC motor excitation wire winding device, comprising two connecting plates with guide rails, the connecting plates being axially slidably connected to the guide rails, a winding head being slidably mounted up and down at one end of each connecting plate, a guide pulley being rotatably mounted at the top of the winding head via a bracket, an mounting plate being fixedly mounted at one end of the winding head via bolts, a winding nozzle being fixedly connected to the top of the mounting plate, a compensating pulley being rotatably mounted on one side of each connecting plate via a telescopic mechanism, the compensating pulley being located above the guide pulley, and a fixed pulley being rotatably mounted on one side of each connecting plate via a connecting bracket, the fixed pulley being located above the compensating pulley.

[0006] As a further embodiment of this utility model: the telescopic mechanism is fixedly connected to a guide sleeve on one end face of the connecting plate, a spring is fixedly installed on one end of the inner wall of the guide sleeve, and a telescopic rod is fixedly connected to one end of the spring.

[0007] As a further embodiment of this utility model: one end of the telescopic rod is slidably connected to the inner wall of the guide sleeve, the other end of the telescopic rod extends through to the outside of the guide sleeve, a movable bracket is fixedly installed at the end of the telescopic rod located outside the guide sleeve, and a compensating pulley is rotatably installed on the inner side of the movable bracket.

[0008] As a further embodiment of this utility model: the inner wall of the winding nozzle is hollow, and both ends of the inner wall of the winding nozzle are formed with variable diameter holes. A transition arc surface is formed between the end of the variable diameter hole near the winding nozzle and the inner wall of the winding nozzle. The ends of the two variable diameter holes that are close to each other are narrow, and the ends of the two variable diameter holes that are far apart from each other are wide. Both ends of the winding nozzle are integrally formed with end arc surfaces that are connected to the wide openings.

[0009] As a further embodiment of this utility model: the telescopic rod has an anti-detachment part integrally formed at one end of the inner wall of the guide sleeve, the non-open position of the inner cavity of the guide sleeve matches the outer wall of the anti-detachment part, and the open position of the inner cavity of the guide sleeve matches the outer wall of the telescopic rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a telescopic mechanism and compensating pulleys, the copper wire can be prevented from being too loose or too tight. Secondly, by setting variable diameter holes, transition arc surfaces, and end arc surfaces at both ends inside the winding nozzle, wear on the copper wire due to friction or excessive bending can be avoided during the winding process. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the telescopic mechanism of this utility model; Figure 3 This is a schematic diagram of the internal structure of the winding nozzle of this utility model.

[0012] In the diagram: 1. Connecting plate; 2. Winding head; 3. Guide pulley; 4. Mounting plate; 5. Winding nozzle; 6. Connecting bracket; 7. Fixed pulley; 8. Guide sleeve; 9. Compensating pulley; 10. Spring; 11. Telescopic rod; 12. Moving bracket; 13. Transition arc surface; 14. Variable diameter hole; 15. End arc surface. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-3In this embodiment of the present invention, a DC motor excitation wire winding device includes two connecting plates 1 with guide rails. The connecting plates 1 are axially slidably connected to the guide rails. A winding head 2 is slidably mounted on the lower part of one end of the connecting plate 1. A guide pulley 3 is rotatably mounted on the top of the winding head 2 via a bracket. An mounting plate 4 is fixedly mounted on one end of the winding head 2 by bolts. A winding nozzle 5 is fixedly connected to the top of the mounting plate 4. A compensating pulley 9 is rotatably mounted on one side of the connecting plate 1 via a telescopic mechanism. The compensating pulley 9 is located above the guide pulley 3. A fixed pulley 7 is rotatably mounted on one side of the connecting plate 1 via a connecting bracket 6. The fixed pulley 7 is located above the compensating pulley 9.

[0015] In this embodiment: First, before winding the copper wire into the groove of the motor rotor bracket, the copper wire is pulled around the fixed pulley 7, the compensating pulley 9, and the guide pulley 3 (as shown in the attached figure). Figure 1 (As shown), then pass the copper wire through the winding nozzle 5, and then you can perform the winding operation; The winding head 2 has two actions during the winding process. One action is to reciprocate in the up and down direction, and the other action is to gradually retreat during the winding process, so that the copper wire is evenly wound on the groove of the rotor support. In conjunction with the reciprocating rotation mechanism that drives the rotor support to rotate, the coil can be wound. Specifically, before winding, one end of the copper wire is clamped by a clamping mechanism (e.g., a starting gripper). At this time, the winding nozzle 5 is located directly above a slot on the rotor support. Then, driven by the first drive mechanism (e.g., an electric pusher cylinder), the winding head 2 and the winding nozzle 5 move downwards until the winding nozzle 5 is directly below the slot. Then, the reciprocating rotation mechanism drives the rotor support to rotate. After rotation, another adjacent slot moves above the winding nozzle 5. At this time, the winding nozzle 5 moves upwards to directly above another adjacent slot. Then, the reciprocating rotation mechanism drives the rotor support to rotate in the opposite direction until the previous slot is again directly below the winding nozzle 5. At this time, the first winding of the coil is completed. Before the second winding, the second drive mechanism (e.g., an electric pusher cylinder) pulls the connecting plate 1 backwards by a distance equal to the cross-sectional size of the copper wire. This achieves the purpose of uniform winding. Then, the second winding of the coil can be carried out. There are many types of reciprocating drive mechanisms, such as servo motors. Servo motors achieve reciprocating drive effects by designing their rotation angle and rotation direction parameters.

[0016] Please refer to this carefully. Figure 1The telescopic mechanism is fixedly connected to the guide sleeve 8 on one end face of the connecting plate 1. A spring 10 is fixedly installed on one end of the inner wall of the guide sleeve 8. A telescopic rod 11 is fixedly connected to one end of the spring 10. One end of the telescopic rod 11 is slidably connected to the inner wall of the guide sleeve 8. The other end of the telescopic rod 11 extends through to the outside of the guide sleeve 8. A movable bracket 12 is fixedly installed on the end of the telescopic rod 11 located outside the guide sleeve 8. A compensating pulley 9 is rotatably installed on the inner side of the movable bracket 12.

[0017] In this embodiment: during the reciprocating motion of the winding head 2, if the copper wire becomes too loose or too tight, the telescopic mechanism drives the compensating pulley 9 to ensure that the copper wire is always in an appropriate tension state, so as not to cause the copper wire above the winding head 2 to become loose. Specifically, when the copper wire is in a relatively loose state, the spring 10 resets and pushes the telescopic rod 11 to slide outward. The telescopic rod 11 pushes the movable bracket 12 to slide, and the movable bracket 12 simultaneously pushes the compensating pulley 9 to move synchronously, thus tightening the loose copper wire. When the copper wire is in a relatively taut state, the copper wire applies a compressive force to the compensating pulley 9. The compressive force is transmitted to the spring 10, which compresses the spring 10 and prevents the copper wire from breaking due to excessive tension. The aforementioned issues of copper wire being too loose or too tight are caused by an error between the input speed and the winding speed of the copper wire during the winding process.

[0018] Please refer to this carefully. Figure 3 The inner wall of the winding nozzle 5 is hollow, and both ends of the inner wall of the winding nozzle 5 are formed with a variable diameter hole 14. The end of the variable diameter hole 14 near the winding nozzle 5 is formed with a transition arc surface 13 between it and the inner wall of the winding nozzle 5. The ends of the two variable diameter holes 14 that are close to each other are narrow, and the ends of the two variable diameter holes 14 that are far apart from each other are wide. Both ends of the winding nozzle 5 are integrally formed with an end arc surface 15 connected to the wide opening.

[0019] In this embodiment: During the winding process of the copper wire, the end arc surface 15 can effectively prevent the end of the winding nozzle 5 from scratching the copper wire, thus avoiding damage to the copper wire during winding. Secondly, by designing the variable diameter hole 14 and the transition arc surface 13, the copper wire can avoid a 90-degree bend at the end of the winding nozzle 5 during winding. A 90-degree bend would cause the copper wire to undergo excessive deformation during winding, making it unable to return to its original position under tension.

[0020] Please refer to this carefully. Figure 2 The telescopic rod 11 has an anti-detachment part integrally formed at one end of the inner wall of the guide sleeve 8. The non-open position of the inner cavity of the guide sleeve 8 matches the outer wall of the anti-detachment part, and the open position of the inner cavity of the guide sleeve 8 matches the outer wall of the telescopic rod 11.

[0021] In this embodiment, the above design can avoid the problem of the telescopic rod 11 detaching from the guide sleeve 8.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A DC motor excitation wire winding device, comprising two connecting plates (1) with guide rails, wherein the connecting plates (1) are axially slidably connected to the guide rails, characterized in that, A winding head (2) is slidably mounted on one end of the connecting plate (1). A guide pulley (3) is rotatably mounted on the top of the winding head (2) via a bracket. An mounting plate (4) is fixedly mounted on one end of the winding head (2) via bolts. A winding nozzle (5) is fixedly connected to the top of the mounting plate (4). A compensating pulley (9) is rotatably mounted on one side of the connecting plate (1) via a telescopic mechanism. The compensating pulley (9) is located above the guide pulley (3). A fixed pulley (7) is rotatably mounted on one side of the connecting plate (1) via a connecting bracket (6). The fixed pulley (7) is located above the compensating pulley (9).

2. The DC motor excitation wire winding device according to claim 1, characterized in that, The telescopic mechanism is fixedly connected to the guide sleeve (8) on one end face of the connecting plate (1). A spring (10) is fixedly installed on one end of the inner wall of the guide sleeve (8), and a telescopic rod (11) is fixedly connected to one end of the spring (10).

3. The DC motor excitation wire winding device according to claim 2, characterized in that, One end of the telescopic rod (11) is slidably connected to the inner wall of the guide sleeve (8), and the other end of the telescopic rod (11) extends through to the outside of the guide sleeve (8). A movable bracket (12) is fixedly installed at the end of the telescopic rod (11) located outside the guide sleeve (8), and a compensating pulley (9) is rotatably installed on the inner side of the movable bracket (12).

4. A DC motor excitation wire winding device according to claim 3, characterized in that, The inner wall of the winding nozzle (5) is hollow, and both ends of the inner wall of the winding nozzle (5) are formed with variable diameter holes (14). A transition arc surface (13) is formed between the end of the variable diameter hole (14) near the winding nozzle (5) and the inner wall of the winding nozzle (5). The ends of the two variable diameter holes (14) that are close to each other are narrow, and the ends of the two variable diameter holes (14) that are far apart from each other are wide. Both ends of the winding nozzle (5) are integrally formed with end arc surfaces (15) connected to the wide opening.

5. A DC motor excitation wire winding device according to claim 4, characterized in that, The telescopic rod (11) has an anti-detachment part integrally formed at one end of the inner wall of the guide sleeve (8). The non-open position of the inner cavity of the guide sleeve (8) matches the outer wall of the anti-detachment part, and the open position of the inner cavity of the guide sleeve (8) matches the outer wall of the telescopic rod (11).

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