A transformer winding fixture

Abstract

This utility model relates to a transformer winding fixture, including a core rod with a tail shank at one end. Slides are arranged in an array around the core rod's axis, and each slide groove contains a contact block extending beyond the core rod. An adjustment mechanism is provided within the core rod to drive the contact blocks to synchronously translate radially along the core rod. A positioning retaining ring is fitted on the core rod between the contact blocks and the tail shank. This utility model achieves rapid assembly and disassembly of the plastic frame by driving the contact blocks to translate radially along the core rod through the adjustment mechanism. This replaces the traditional screw-locking method, eliminating the need for special tools, avoiding tedious tightening operations, saving assembly and disassembly time and labor costs, and improving operational convenience and efficiency. Simultaneously, the positioning retaining ring can be translated axially along the core rod, and combined with the adjustment mechanism, the contact blocks can be radially adjusted to extend to different degrees. This dual adjustment mechanism allows it to adapt to plastic frames of different lengths and diameters.

Description

Technical Field

[0001] This utility model relates to the field of winding fixture technology, and in particular to a transformer winding fixture. Background Technology

[0002] Existing transformer winding methods typically involve winding the coil onto a plastic bobbin, then placing the magnetic core inside the bobbin. During the winding process, the bobbin needs to be fitted onto the core rod, and a drive device rotates the core rod, which in turn rotates the bobbin, thus winding the conductor. In traditional technology, the bobbin is usually secured to the winding shaft with screws, requiring specialized tools to tighten the screws for assembly and disassembly, which is time-consuming and labor-intensive. Furthermore, a single core rod fixture can only accommodate plastic bobbins of the same size, resulting in poor versatility. Utility Model Content

[0003] The purpose of this utility model is to provide a transformer winding fixture, which effectively solves the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution.

[0005] A transformer winding fixture includes a core rod with a tail shank at one end. Slides are arranged in an array around the core rod's axis, and each slide groove contains a contact block. Each contact block extends to the outside of the core rod. An adjustment mechanism is provided inside the core rod to drive each contact block to move synchronously along the radial direction of the core rod. A positioning retaining ring is fitted on the core rod between the contact block and the tail shank.

[0006] Furthermore, the adjustment mechanism includes a bidirectional threaded rod, a nut seat, and a traction rod. The core rod has an inner cavity, and each sliding groove communicates with the inner cavity. Each contact block extends into the inner cavity. The bidirectional threaded rod is rotatably installed in the inner cavity and is coaxial with the core rod. Two nut seats are symmetrically threaded on the bidirectional threaded rod. Each contact block extending into the inner cavity has a traction rod hinged to both sides. The other end of each traction rod is hinged to the corresponding side of the nut seat on the same side.

[0007] Furthermore, the end of the bidirectional threaded rod away from the tailstock extends through to the outside of the core rod and is fitted with a torsion handle.

[0008] Furthermore, the end of the core rod furthest from the tailstock is a tapered guide with a diameter that decreases as it moves away from the tailstock, and the diameter of the torsion handle is smaller than the minimum diameter of the tapered guide.

[0009] Furthermore, the inner edge of the positioning retaining ring and the outer edge of the core rod are in movable contact, and the positioning retaining ring can be moved and adjusted along the axial direction of the core rod.

[0010] Furthermore, the positioning retaining ring can rotate around the axis of the core rod, and the tail shank is provided with an external thread. The external thread is matched with a screw-shaped adjusting ring. Connecting rods are evenly distributed on the side of the adjusting ring, and each connecting rod is fixedly connected to the side of the positioning retaining ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0012] The adjustment mechanism drives the contact block to move radially along the core rod for adjustment, enabling quick assembly and disassembly of the plastic frame. This replaces the traditional fastening method that uses screws, eliminates the need for special tools, avoids tedious screwing operations, saves assembly and disassembly time and labor costs, and improves operational convenience and efficiency.

[0013] The positioning retaining ring can be translated and adjusted along the axial direction of the core rod. Combined with the adjustment mechanism, the contact block can be radially adjusted to extend to different degrees. The dual adjustment mechanism enables it to adapt to plastic skeletons of different lengths and diameters, solving the problem of poor versatility of traditional jigs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 A partial cross-sectional schematic diagram of the structure shown;

[0016] Figure 3 for Figure 1 A schematic diagram of the radial cross-section of the structure shown.

[0017] Figure 4 This is a schematic diagram of the installation of the positioning retaining ring structure in this utility model.

[0018] In the diagram: 1. Core rod; 11. Slide groove; 12. Contact block; 13. Inner cavity; 2. Tail handle; 3. Positioning retaining ring; 4. Adjusting ring; 41. External thread; 42. Connecting rod; 5. Adjusting mechanism; 51. Bidirectional threaded rod; 511. Torque handle; 52. Nut seat; 53. Traction rod. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4The present invention provides a transformer winding fixture, including a core rod 1, one end of which has a tail shank 2. The core rod 1 has a total length of 150mm, the main cylindrical section of the core rod 1 has a diameter of 30mm, and the tail shank 2 has a diameter of 25mm. The tail shank 2 is used to connect with an external drive device. When a plastic skeleton is fitted onto the core rod 1, the drive device can drive the core rod 1 to rotate, thereby driving the plastic skeleton to rotate and providing rotational force for winding.

[0021] The core rod 1 has an array of grooves 11 arranged around its axis. Each groove 11 contains a contact block 12, and each contact block 12 extends to the outside of the core rod 1. The contact blocks 12 are made of PA66 nylon material, which is wear-resistant and does not damage the inner wall of the skeleton. A positioning retaining ring 3 is fitted on the core rod 1 between the contact block 12 and the tail shank 2. When the plastic skeleton is fitted onto the core rod 1, the positioning retaining ring 3 is used to block the side of the plastic skeleton to achieve the positioning of the plastic skeleton and ensure the accuracy of the installation position of the plastic skeleton.

[0022] The core rod 1 is equipped with an adjustment mechanism 5. By working, the adjustment mechanism 5 can drive each contact block 12 to move synchronously along the radial direction of the core rod 1. That is, the adjustment mechanism 5 can drive each contact block 12 to move together along the radial direction of the core rod 1 towards one side of the axis of the core rod 1, and can also drive each contact block 12 to move apart along the radial direction of the core rod 1 towards the side opposite to the axis of the core rod 1.

[0023] After the plastic frame is fitted onto the core rod 1, the adjusting mechanism 5 drives each contact block 12 to move toward the side away from the axis of the core rod 1 until each contact block 12 is pressed against the inner wall of the plastic frame, thus securing the plastic to the core rod 1 from the inside and achieving the fitting of the plastic frame.

[0024] When disassembling and replacing the plastic frame, simply operate the adjustment mechanism 5 to drive each contact block 12 to move towards the axis of the core rod 1, thereby releasing the contact block 12 from pressing against the inner wall of the frame, and the plastic frame can be removed.

[0025] like Figure 2 As shown and Figure 3 As shown, the adjustment mechanism 5 includes a bidirectional threaded rod 51, a nut seat 52 and a traction rod 53. The core rod 1 has an inner cavity 13. Each slide groove 11 is connected to the inner cavity 13. Each contact block 12 extends into the inner cavity 13. The bidirectional threaded rod 51 is rotatably installed in the inner cavity 13 and is coaxial with the core rod 1.

[0026] Two nut seats 52 are symmetrically screwed onto the threaded rod 51. When the threaded rod 51 rotates, it can drive the nut seats 52 to move closer or further apart. The threaded section of the threaded rod 51 is 60mm long and the pitch is 2mm. The two ends are left-hand threads and right-hand threads, respectively.

[0027] Each abutment block 12 has a traction rod 53 hinged to both sides of its end extending into the inner cavity 13. The other end of each traction rod 53 is hinged to the corresponding side of the nut seat 52 on the same side. The specific hinge method is to use a pin connection to ensure the rigidity of the connection.

[0028] The end of the bidirectional threaded rod 51 away from the tail shank 2 extends through to the outside of the core rod 1 and is fitted with a torsion handle 511. The surface of the torsion handle 511 is knurled to increase the friction between it and the hand.

[0029] By pinching the torsion handle 511 to adjust the double-threaded rod 51, the rotating double-threaded rod 51 can drive the two nut seats 52 to move closer or further apart. Under the traction of the traction rod 53, it can drive each abutment block 12 to move toward one side of the core rod 1 axis or toward the side away from the core rod 1 axis, thereby realizing the adjustment of the abutment block 12 along the radial direction of the core rod 1.

[0030] The end of the core rod 1 furthest from the tailstock 2 is a tapered guide with a diameter that decreases as it moves away from the tailstock 2. This guide is used to quickly fit the plastic skeleton onto the core rod 1. In addition, the diameter of the torsion handle 511 is smaller than the minimum diameter of the tapered guide, so as to avoid affecting the fitting of the plastic skeleton onto the core rod 1.

[0031] like Figure 1 and Figure 4 As shown, the inner edge of the positioning retaining ring 3 is movably fitted with the outer edge of the core rod 1. Since the positioning retaining ring 3 is movably fitted onto the core rod 1, the positioning retaining ring 3 has the ability to move along the axial direction of the core rod 1 and to rotate around the axis of the core rod 1.

[0032] The tail shank 2 is provided with an external thread 41, and an adjusting ring 4 is threadedly matched at the external thread 41. That is, the adjusting ring 4 has a screw hole, and the screw hole matches the external thread 41.

[0033] The side of the adjusting ring 4 is evenly distributed with connecting rods 42, and each connecting rod 42 is fixedly connected to the side of the positioning retaining ring 3.

[0034] By rotating and turning the adjusting ring 4, under the thread drive of the screw hole and the external thread 41 on the adjusting ring 4, the adjusting ring 4 can be translated and adjusted along the axial direction of the core rod 1. Under the connection of the connecting rod 42, the positioning retaining ring 3 can be driven to be translated and adjusted along the axial direction of the core rod 1 to adapt to the positioning kit of plastic skeletons of different lengths.

[0035] Furthermore, by adjusting the mechanism 5 to drive the contact block 12 to move by different amounts, it can adapt to plastic frames of different diameters, thus exhibiting high versatility.

[0036] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. The specific structure, model and coefficient index of all components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented. Therefore, they will not be described in detail.

[0037] The above is a detailed description of the present invention in conjunction with specific embodiments, and it should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, any equivalent substitutions or obvious modifications made without departing from the concept of the present invention, and which have the same performance or use, should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. A transformer winding fixture, comprising a core rod (1), one end of which has a tail shank (2), characterized in that: The core rod (1) has an array of grooves (11) arranged around its axis, and each groove (11) has an abutment block (12) extending to the outside of the core rod (1). The core rod (1) is provided with an adjustment mechanism (5), which is used to drive each of the abutment blocks (12) to synchronously translate and adjust along the radial direction of the core rod (1); A positioning retaining ring (3) is fitted on the core rod (1) between the contact block (12) and the tail shank (2).

2. The transformer winding fixture according to claim 1, characterized in that: The adjustment mechanism (5) includes a bidirectional threaded rod (51), a nut seat (52), and a traction rod (53); The core rod (1) is provided with an inner cavity (13), each of the sliding grooves (11) is in communication with the inner cavity (13), and each of the abutting blocks (12) extends into the inner cavity (13); The bidirectional threaded rod (51) is rotatably installed in the inner cavity (13) and is coaxial with the core rod (1); Two nut seats (52) are symmetrically threaded and screwed onto the bidirectional threaded rod (51); Each of the abutment blocks (12) has a traction rod (53) hinged to both sides of its end extending into the inner cavity (13), and the other end of each traction rod (53) is hinged to the corresponding side of the nut seat (52) on the same side.

3. A transformer winding fixture according to claim 2, characterized in that: The end of the bidirectional threaded rod (51) away from the tailstock (2) extends through to the outside of the core rod (1) and is fitted with a torsion handle (511).

4. A transformer winding fixture according to claim 3, characterized in that: The end of the core rod (1) away from the tailstock (2) is a tapered guide portion with a diameter that decreases as it moves away from the tailstock (2); The diameter of the torsion handle (511) is smaller than the minimum diameter of the tapered guide.

5. A transformer winding fixture according to claim 1, characterized in that: The inner edge wall of the positioning retaining ring (3) and the outer edge wall of the core rod (1) are movably fitted together; The positioning retaining ring (3) can be moved and adjusted along the axial direction of the core rod (1).

6. A transformer winding fixture according to claim 5, characterized in that: The positioning retaining ring (3) can rotate around the axis of the core rod (1); The tailstock (2) is provided with an external thread (41), and an adjusting ring (4) is threadedly matched at the external thread (41); The adjusting ring (4) has connecting rods (42) evenly distributed on its side, and each connecting rod (42) is fixedly connected to the side of the positioning retaining ring (3).

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