Spindle locking device

Abstract

The utility model relates to a main shaft locking device which comprises a square shaft inserted into a through hole of a main shaft, two first inclined planes which are distributed along the radial direction of the square shaft and are arranged on two opposite side surfaces of the square shaft, and supporting plates which correspond to the first inclined planes and slide on the first inclined planes along the axial direction of the square shaft, the square shaft is further connected with a driving device for driving the supporting plate to slide, the first inclined face inclines towards the axis of the square shaft from back to front in the radial direction of the square shaft, and the first inclined face is located behind the supporting plate. According to the preferable scheme, in the using process, the driving device drives the supporting plates to slide along the first inclined face from front to back, the supporting plates obliquely move backwards along the first inclined face in the direction away from the axis of the square shaft, and therefore the distance between the supporting plates and the axis of the square shaft is increased; and when the square shaft rotates, the main shaft is driven to rotate by virtue of the friction force of the support, so that the production requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of coils, and more particularly to the field of coil winding technology, specifically referring to a spindle locking device. Background Technology

[0002] Coils are generally classified into two types: layered and disc-shaped. A layered coil is one in which the turns of wire are wound continuously in layers along the axial direction. Each layer is cylindrical, a design choice chosen to ensure good mechanical strength, resistance to deformation, and ease of winding. A coil consisting of two layers is called a double-layered cylindrical coil; one consisting of multiple layers is called a multi-layered cylindrical coil.

[0003] A coil composed of many coils wound radially into a disc (segment) and then arranged axially is called a disc coil. Continuous and entangled coils belong to this type of coil.

[0004] When winding transformer coils, there are two methods: wrapping and looping. In looping, copper foil needs to be wound around the main shaft of the mold. The main shaft of the mold needs to be detachable and has through holes along its axial direction. Therefore, during the copper foil winding process, a rotating shaft is needed to support the main shaft from the inside and then drive the rotating shaft to rotate the main shaft. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a spindle locking device that supports the spindle from within the perforation, thereby driving the spindle to rotate and thus meeting production requirements.

[0006] This utility model is achieved through the following technical solution: a spindle locking device includes a square shaft inserted into a through hole in the spindle, two first inclined surfaces arranged radially along the square shaft and disposed on two opposite sides of the square shaft, and a support plate corresponding to the first inclined surfaces and sliding on the first inclined surfaces along the axial direction of the square shaft. The square shaft is also connected to a driving device that drives the support plate to slide. The first inclined surfaces are inclined radially from back to front towards the axis of the square shaft and are located behind the support plate.

[0007] In use, the drive device drives the support plate to slide along the first inclined surface from front to back. The support plate moves backward along the first inclined surface and in a direction away from the axis of the square shaft, thereby increasing the distance between the support plate and the axis of the square shaft. When the two support plates arranged opposite each other reach the inner circumferential surface of the spindle hole, the square shaft supports and locks the spindle. When the square shaft rotates, the friction of the support drives the spindle to rotate, thereby meeting the production requirements.

[0008] Preferably, the square shaft is provided with a connecting rod that passes through the square shaft and through the two support plates. The connecting rod is threaded with a first nut. The two support plates are located between the two first nuts. The square shaft is provided with a first elongated hole for the connecting rod to move along the axial direction of the square shaft.

[0009] In use, the two screws in this preferred embodiment act as guides when the support plate moves radially along the main shaft. The first elongated hole facilitates the movement of the connecting rod in the front-back direction and also provides guidance for the connecting rod, thereby enabling the support plate to slide along the first inclined surface.

[0010] Preferably, a spring is also connected to the first nut and sleeved on the connecting rod, with the end of the spring away from the nut pressing against the support plate.

[0011] In this preferred embodiment, when not in use, the support plate slides on the connecting rod, thus making the position of the support plate not fixed. The spring restricts the sliding of the support plate on the connecting rod, thereby fixing the support plate and facilitating the insertion of the square shaft into the spindle through hole. When in use, as the support plate slides along the first inclined plane, the support plate compresses the spring. When the support plate is no longer driven by the drive device, the spring causes the support plate to actively reset.

[0012] Preferably, the driving device includes a stud fixed to the front end face of the square shaft and coaxially arranged with the square shaft, a second nut threaded onto the stud, and a first side plate located between the second nut and the support plate and slidably mounted on the square shaft circumferentially.

[0013] In use, this preferred embodiment drives the second nut to rotate on the stud, thereby causing the second nut to move the first side plate toward the support plate, thus realizing the movement of the support plate by the first side plate.

[0014] Preferably, a second elongated hole is provided in the square shaft between the two first side plates, and a connecting shaft is provided in the second elongated hole. The two first side plates are bolted to the connecting shaft, and a movable disk is also connected to the two first side plates. The movable disk has a through hole for the stud to pass through.

[0015] This preferred solution connects the two first side plates via a connecting shaft, while the second elongated hole guides the connecting shaft, facilitating the movement of the first side plates along the square shaft axis. The moving disc allows the second nut to simultaneously drive the two first side plates to move, thus enabling the two support plates to move synchronously. The spring drives the support plates to push the first side plates forward, and the nut also serves as a limit.

[0016] Preferably, at least one set of clamping structures is provided on the circumferential surface of the connecting shaft. The clamping structure includes two clamping grooves arranged opposite each other, which extend axially along the square axis to one end face of the connecting shaft.

[0017] When using this preferred embodiment, when bolting the two first side plates to the connecting shaft, first place the connecting shaft into the second elongated hole, then use pliers to fix the connecting shaft from the two clamping slots, then place one first side plate in the appropriate position, and then use bolts to fix one first side plate to the connecting shaft. Then fix the connecting shaft by fixing the first side plate, thereby facilitating the bolt connection of the other side plate to the connecting shaft.

[0018] Preferably, the rear side of the first side plate that contacts the support plate is a second inclined surface that is inclined from front to back towards the square axis, and the inclination angle of the second inclined surface is complementary to the inclination angle of the first inclined surface.

[0019] This preferred solution, by setting the second inclined plane, allows both sides of the support plate to move radially along the square axis simultaneously, avoiding the situation where only one side of the support plate on the first inclined plane moves away from the square axis.

[0020] Preferably, the second and third sides of the support plate, which are arranged along the square axis, are both inclined surfaces. The second side slopes downward from back to front and is adapted to the first inclined surface, while the third side slopes upward from back to front and is adapted to the second inclined surface.

[0021] This preferred solution guides the sliding of the support plate through the cooperation of the second side with the first inclined surface and the third side with the second inclined surface.

[0022] Preferably, a second side plate located behind the support plate can also be detachably connected to the square shaft, and the side of the second side plate near the support plate is the first inclined surface.

[0023] This preferred solution facilitates the adjustment of the position of the first inclined surface by setting the second side plate, and the tilt angle of the first inclined surface can be adjusted by using different second side plates.

[0024] Preferably, all four corners on the circumferential surface of the square shaft are chamfered. This preferred embodiment facilitates the insertion of the square shaft into the spindle through hole.

[0025] The beneficial effects of this utility model are as follows: The driving device drives the support plate to slide along the first inclined surface from front to back. The support plate moves backward along the first inclined surface and tilts away from the axis of the square shaft, thereby increasing the distance between the support plate and the axis of the square shaft. When the two opposing support plates reach the inner circumferential surface of the spindle hole, the square shaft supports and locks the spindle. When the square shaft rotates, the friction of the support drives the spindle to rotate, thus meeting production requirements. The two screws act as guides when the support plate moves radially along the spindle. The hole allows the connecting rod to move in the front-to-back direction and also provides guidance for the connecting rod, thus enabling the support plate to slide along the first inclined plane. In the unused state, the support plate slides on the connecting rod, making its position not fixed. The spring restricts the sliding of the support plate on the connecting rod, thereby fixing the support plate and facilitating the insertion of the square shaft into the spindle through hole. In use, when the support plate slides along the first inclined plane, it compresses the spring. When the support plate is no longer driven by the drive device, the spring causes the support plate to actively reset. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0027] Figure 2 These are three views of the structure of this utility model;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross-section at point BB;

[0029] Figure 4 for Figure 2 Schematic diagram of the cross-section at point C;

[0030] Figure 5 This is a three-dimensional schematic diagram of the structure of this utility model from another angle;

[0031] As shown in the figure:

[0032] 1. First side plate, 2. Second side plate, 3. Support plate, 4. Moving plate, 5. Second nut, 6. Square shaft, 7. Turntable, 8. Stud, 9. Connecting rod, 10. Spring, 11. First inclined plane, 12. Second inclined plane, 13. First nut, 14. Clamping groove. Detailed Implementation

[0033] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0034] See attached document Figure 1-5This utility model discloses a spindle locking device, including a square shaft 6 inserted into a through hole in the spindle. The four corners on the circumference of the square shaft 6 are chamfered. A turntable 7 is fixedly connected to the rear end face of the square shaft 6. A rotary motor drives the turntable 7 to rotate, thereby driving the square shaft 6 to rotate.

[0035] Support plates 3 are provided on two opposite sides of the square shaft 6. The second and third sides of the support plates 3 are inclined planes arranged along the axial direction of the square shaft. The second side is the rear end face of the support plate 3, and the third side is the front end face of the support plate 3. The second side is inclined from back to front towards the axis of the square shaft 6, and the third side is inclined from front to back towards the axis of the square shaft 6, so that the support plate 3 is trapezoidal.

[0036] The square shaft 6 is provided with a connecting rod 9 that passes through the square shaft 6 and two support plates 3. The two connecting rods 9 are arranged along the axial direction of the square shaft. A first nut 13 is threaded onto the connecting rod 9. The two support plates 3 are located between the two first nuts 13. A first elongated hole is opened in the square shaft 6 to allow the connecting rod 9 to move along the axial direction of the square shaft. A spring 10 is also connected to the first nut 13 and sleeved on the connecting rod 9. The end of the spring 10 away from the nut pushes against the support plate 3. A support groove is opened on the support plate 3. The spring 10 and the first nut 13 are both located in the support groove. A connecting hole is opened at the bottom of the support groove for the connecting rod 9 to pass through. The diameter of the connecting hole is adapted to the diameter of the connecting rod 9.

[0037] The square shaft 6 is also provided with a first side plate 1 and a second side plate 2 corresponding to the support plate 3. The second side plate 2, the support plate 3, and the first side plate 1 are arranged sequentially from back to front along the axis of the square shaft 6. The side of the second side plate 2 near the support plate 3 is the first inclined surface 11, that is, the front end surface of the second side plate 2 is the first inclined surface 11. The first inclined surface 11 is inclined from back to front towards the axis of rotation. The first inclined surface 11 is adapted to the second side surface and extends to the bottom of the second side surface, so that the second side plate 2 supports the support plate 3. The second side plate 2 is bolted to the square shaft 6.

[0038] The side of the first side plate 1 closest to the support plate 3 is the second inclined surface 12, that is, the rear end face of the first side plate 1 is the second inclined surface 12. The second inclined surface 12 is inclined from front to back towards the axis of rotation. The second inclined surface 12 is adapted to the third side and extends to the bottom of the third side, so that the first side plate 1 supports the support plate 3. The inclination angle of the first inclined surface 11 and the inclination angle of the second inclined surface 12 are complementary.

[0039] A second elongated hole is provided in the square shaft 6 between the two first side plates 1. A connecting shaft is provided in the second elongated hole. The two first side plates 1 are bolted to the connecting shaft. Two sets of clamping structures are provided on the circumferential surface of the connecting shaft. The two sets of clamping structures are arranged along the axial direction of the connecting shaft. The connecting shaft extends along the square shaft 6. The clamping structure includes two clamping grooves 14 arranged opposite to each other. The clamping grooves 14 extend along the axial direction of the square shaft to one end face of the connecting shaft.

[0040] A stud 8 coaxially arranged with the square shaft 6 is fixed to the front end face of the square shaft 6. A second nut 5 is threaded onto the stud 8. A movable disk 4 is connected to the two first side plates 1. The movable disk 4 has a through hole for the stud 8 to pass through. A washer fitted on the stud 8 is also provided between the movable disk 4 and the second nut 5. The washer serves as a lubricant.

[0041] The first side plate 1, the stud 8, and the second nut 5 form a driving device that drives the support plate 3 to slide.

[0042] Specifically, see Appendix Figure 2 The main view in the image is shown with the right side representing the front and the left side representing the back.

[0043] When this utility model is in use, in the non-use state, the spring 10 drives the support plate 3 to move towards the axis of the square shaft 6. Under the guidance of the first inclined surface 11 and the second inclined surface 12, the spring 10 pushes the first side plate 1 to move forward. At this time, the movement of the support plate 3 is restricted by the limit of the second nut 5.

[0044] In use, the square shaft 6 is inserted into the square hole of the main shaft, and then the nut is rotated, causing the moving disk 4 to move the two first side plates 1 backward. The backward movement of the first side plates 1 causes the support plate 3 to move tilted along the first inclined surface 11, thereby increasing the distance between the support plate 3 and the axis of the square shaft 6. When the two support plates 3 reach the inner circumferential surface of the main shaft through hole, the square shaft 6 supports and locks the main shaft. When the square shaft 6 rotates, the friction of the support drives the main shaft to rotate, thereby meeting the production requirements.

[0045] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A spindle locking device, characterized in that: The device includes a square shaft (6) inserted into the spindle hole, two first inclined surfaces (11) arranged radially along the square shaft (6) and disposed on two opposite sides of the square shaft (6), and a support plate (3) corresponding to the first inclined surface (11) and sliding on the first inclined surface (11) along the axial direction of the square shaft. The square shaft (6) is also connected to a driving device that drives the support plate (3) to slide. The first inclined surface (11) is inclined radially from back to front towards the axis of the square shaft (6) and is located behind the support plate (3).

2. The spindle locking device according to claim 1, characterized in that: The square shaft (6) is provided with a connecting rod (9) that passes through the square shaft (6) and through two support plates (3). A first nut (13) is threaded on the connecting rod (9). The two support plates (3) are located between the two first nuts (13). A first elongated hole is provided in the square shaft (6) for the connecting rod (9) to move along the square shaft axis.

3. The spindle locking device according to claim 2, characterized in that: A spring (10) is also connected to the first nut (13) and sleeved on the connecting rod (9). The end of the spring (10) away from the nut pushes against the support plate (3).

4. The spindle locking device according to claim 1, characterized in that: The drive device includes a stud (8) fixed to the front end face of the square shaft (6) and coaxially arranged with the square shaft (6), a second nut (5) threadedly connected to the stud (8), and a first side plate (1) located between the second nut (5) and the support plate (3) and slidably mounted on the square shaft (6) circumferentially.

5. The spindle locking device according to claim 4, characterized in that: The square shaft (6) has a second long hole located between the two first side plates (1). The second long hole has a connecting shaft. The two first side plates (1) are bolted to the connecting shaft. The two first side plates (1) are also connected to a movable disk (4). The movable disk (4) has a through hole for the stud (8) to pass through.

6. The spindle locking device according to claim 5, characterized in that: At least one set of clamping structures is provided on the circumferential surface of the connecting shaft. The clamping structure includes two clamping grooves (14) arranged opposite to each other. The clamping grooves (14) extend axially along the square axis to one end face of the connecting shaft.

7. The spindle locking device according to claim 4, characterized in that: The rear side of the first side plate (1) that contacts the support plate (3) is a second inclined surface (12) that is inclined from front to back towards the axis of the square axis (6). The inclination angle of the second inclined surface (12) is complementary to the inclination angle of the first inclined surface (11).

8. The spindle locking device according to claim 7, characterized in that: The second and third sides of the support plate (3) arranged along the square axis are both inclined surfaces. The second side is inclined from back to front to the square axis (6) and is adapted to the first inclined surface (11). The third side is inclined from front to back to the square axis (6) and is adapted to the second inclined surface (12).

9. The spindle locking device according to claim 7, characterized in that: A second side plate (2) located behind the support plate (3) can also be detachably connected to the square shaft (6). The side of the second side plate (2) near the support plate (3) is the first inclined surface (11).

10. The spindle locking device according to claim 1, characterized in that: The four corners of the square shaft (6) on the circumference are all chamfered.

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