Automatic wrapping machine for mutual inductor iron core

By designing an automatic winding machine for transformer cores, using a motor to drive the rotating worktable and circular turntable, combined with a cylinder to push the polyurethane pressure plate and cutting device, automatic positioning and continuous winding of the core are achieved, solving the problems of low efficiency, large quality fluctuations and high labor intensity in the existing technology, and realizing an efficient and stable automated winding process.

CN223362979UActive Publication Date: 2025-09-19ZHEJIANG CHUANFENG ELECTRIC TECH CO LTD
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Patent Information

Application Number
CN202422789176.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-09-19
Estimated Expiration
2034-11-15

AI Technical Summary

Technical Problem

The existing transformer core winding process relies on manual or semi-automatic methods, which has problems such as low efficiency, large quality fluctuations, high labor intensity, and insufficient automation level.

Method used

An automatic winding machine for transformer cores is designed. The rotating worktable and circular turntable are driven by a motor, and the polyurethane pressure plate and cutting device are driven by a cylinder to achieve automatic positioning and continuous winding of the core. The continuous supply of tape reels and the cutting device are used to ensure the winding quality.

Benefits of technology

It realizes full automation of core wrapping, improves production efficiency, ensures the stability and consistency of wrapping quality, reduces workers' labor intensity and improves the level of automation.

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Abstract

The utility model relates to the technical field of mutual inductor processing, and discloses an automatic wrapping machine for a mutual inductor iron core, which is characterized in that a conversion platform is arranged on a base, a motor is arranged below the conversion platform, the conversion platform is connected with a rotating shaft, a rotating workbench is arranged outside the rotating shaft, and mandrels are symmetrically arranged on the rotating workbench; and the shaft top is provided with a circular turntable and a positioning block for fixing a template tool. An adjusting screw rod is rotationally arranged on the top seat; an adjusting hand wheel is arranged at the top end of the screw rod; an external thread is connected with a lifting seat; an air cylinder is arranged on the seat, an output end of the air cylinder is connected with an adjustable sliding seat, and two groups of polyurethane pressure plates are arranged at the bottom of the sliding seat. After a motor rotates to drive the rotary workbench to rotate to a designated position, a central spindle at the bottom of one circular rotary table rotates after being in lap joint with a motor gear, and a central spindle of the other circular rotary table stops rotating after being separated from the motor gear. The continuous wrapping effect can be achieved by reciprocating the actions, and the production efficiency is remarkably improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductor processing, in particular to an automatic wrapping machine for a mutual inductor iron core. Background Art

[0002] Instrument transformers are essential metering, measurement, and protection devices in power systems. Their cores, as the core component of electromagnetic induction, play a crucial role in high, medium, and low voltage power systems. Instrument transformers are particularly common in low voltage power systems, becoming ubiquitous.

[0003] Wrapping the core casing is an essential step in the mass production of instrument transformers. However, this process currently relies primarily on manual or semi-automated equipment. Manual wrapping is significantly inefficient, with inconsistent quality and high labor intensity. While semi-automated equipment has improved production efficiency to a certain extent, the operation remains complex, and precision control and automation levels need to be improved. These issues limit the efficiency and quality of instrument transformer production and increase production costs.

[0004] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop an automatic transformer core wrapping machine. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic transformer core wrapping machine to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A technical solution for an automatic winding machine for a transformer core, comprising a base, a conversion platform provided on the base, a motor provided below the conversion platform, a rotating shaft connected to the conversion platform, a rotating worktable installed outside the rotating shaft, a core shaft symmetrically installed on the rotating worktable, a circular turntable provided on the top of the core shaft, a positioning block installed on the circular turntable, the positioning block being used for installing a template tooling, two groups of guide rods provided in parallel on the base, a top seat jointly installed on the top of the two groups of guide rods, an adjusting screw rotatably connected to the top seat, an adjusting handwheel provided on the top of the adjusting screw, a lifting seat connected to the external thread of the adjusting screw, a cylinder installed on the lifting seat, an adjustable slide connected to the output end of the cylinder, and two groups of polyurethane pressure plates provided opposite to each other at the bottom of the adjustable slide.

[0008] As a preferred technical solution, the polyurethane pressure plate is slidably connected to the adjustable slide seat and corresponds one-to-one with the positioning block.

[0009] As a preferred technical solution, a plurality of material trays are provided on adjacent sides of the base, and the material trays are used to place iron cores.

[0010] As a preferred technical solution, a material rack is installed on the base, and the material rack is used to install the tape reel, and the tape reel is rotatably connected to the material rack.

[0011] As a preferred technical solution, the lifting seat is slidably connected to the guide rod, a slider is installed on the base, and a slide rail is installed under the slider to slide with it, a push rod is installed on the top of the slider, and a blade is installed at the front end of the push rod. The blade is used to cut the tape, and rigid springs are provided on both sides of the blade, and the rigid springs are used to fix the tape.

[0012] As a preferred technical solution, the push rod is covered with a protective cover.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model is an automatic wrapping machine for transformer cores. After the motor rotates and drives the rotating worktable to the specified position, the core shaft at the bottom of the circular turntable overlaps the motor gear and rotates, while the core shaft of the other circular turntable stops rotating after disengaging from the motor gear. The reciprocating action can achieve continuous wrapping. The automatic wrapping machine realizes continuous and rapid wrapping operations, significantly improving production efficiency. By accurately positioning the core and performing the automated wrapping action, the stability and consistency of the wrapping quality are ensured. This reduces manual intervention, reduces the labor intensity of workers, and realizes the full automation of the transformer core wrapping process, thereby improving the automation level of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an automatic winding machine for transformer cores;

[0016] Figure 2 The figure is a schematic diagram of the axonometric structure of an automatic winding machine for transformer cores;

[0017] Figure 3 This is a schematic diagram of the front structure of an automatic transformer core wrapping machine.

[0018] In the accompanying drawings: 1. Base; 11. Material tray; 21. Conversion platform; 22. Rotating shaft; 23. Core shaft; 24. Circular turntable; 25. Tape reel; 26. Positioning block; 31. Guide rod; 32. Top seat; 33. Adjusting screw; 331. Adjusting hand wheel; 34. Lifting seat; 35. Cylinder; 36. Adjustable slide; 37. Polyurethane pressure plate; 4. Protective cover; 41. Slider; 42. Slide rail; 43. Push rod; 44. Blade; 45. Rigid spring. DETAILED DESCRIPTION

[0019] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0020] like Figure 1 、 Figure 2 and Figure 3 As shown, the present invention provides a technical solution for an automatic transformer core wrapping machine: comprising a base 1, a conversion platform 21 disposed on the base 1, a motor disposed below the conversion platform 21, a rotating shaft 22 connected to the conversion platform 21, a rotating worktable mounted externally to the rotating shaft 22, a core shaft 23 symmetrically mounted on the rotating worktable, and a circular turntable 24 disposed at the top of the core shaft 23. A positioning block 26 is mounted on the circular turntable 24, which is used to install a template tool to ensure the accurate position of the core.

[0021] Two sets of guide rods 31 are mounted parallel to the base 1. A top seat 32 is mounted on the top of the two sets of guide rods 31. An adjustment screw 33 is rotatably connected to the top seat 32. An adjustment handwheel 331 is mounted on the top of the adjustment screw 33. The adjustment screw 33 is externally threadedly connected to a lift seat 34. A cylinder 35 is mounted on the lift seat 34. The output end of the cylinder 35 is connected to an adjustable slide 36. Two sets of polyurethane pressure plates 37 are mounted on the bottom of the adjustable slide 36 in a facing position.

[0022] The polyurethane pressure plate 37 is slidably connected to the adjustable slide 36 and corresponds one-to-one with the positioning block 26 to ensure the stability of the iron core and the uniformity of the wrapping during the wrapping process.

[0023] Among them, multiple sets of material trays 11 are set on the adjacent sides of the base 1. The material trays 11 are used to place iron cores. A material rack is installed on the base 1. The material rack is used to install tape reels 25, and the tape reels 25 are rotatably connected to it to achieve continuous tape supply.

[0024] The lifting base 34 is slidably connected to the guide rod 31. A slider 41 is mounted on the base 1, and a slide rail 42 is mounted below the slider 41 for sliding engagement with it. A push rod 43 is mounted on the top of the slider 41, and a blade 44 is mounted at the front end of the push rod 43. Blade 44 is used to cut the tape. Rigid springs 45 are installed on both sides of blade 44 to secure the tape and ensure accurate cutting.

[0025] The push rod 43 is sheathed with a protective cover 4, which is used to protect the operator's safety and prevent accidents when cutting the tape.

[0026] The iron core is placed on the circular turntable 24. The motor drives the rotary table to the desired position. The core shaft 23 at the bottom of the circular turntable 24 engages the motor gear and rotates. The core shaft of the other circular turntable 24 disengages from the motor gear and stops rotating. The adjustment handle 331 adjusts the height of the lift base 34 to accommodate cores of varying sizes. Simultaneously, the cylinder 35 pushes the polyurethane pressure plate 37 to compress the core, ensuring its stability during the wrapping process. The tape reel 25 rotates with the rotating shaft 22, and the tape is guided by the positioning block 26 to adhere to the surface of the iron core.

[0027] When the tape needs to be cut, the push rod 43 moves forward, the blade 44 cuts the tape, and the rigid spring 45 fixes the tape to prevent it from rebounding.

[0028] The automatic transformer core wrapping machine of the utility model can realize continuous and rapid wrapping operations, significantly improve production efficiency, ensure the stability and consistency of wrapping quality, reduce manual intervention, reduce the labor intensity of workers, and realize full automation of the transformer core wrapping process.

[0029] The working principle and use process of the present invention are as follows: After assembling the various components of the present invention in sequence, all the working steps can be completed by working in accordance with the above implementation methods in sequence according to actual needs.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0033] While the embodiments described above are based on the present invention, these embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Clearly, many modifications and variations are possible based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better utilize the present invention and its modifications and uses. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automatic winding machine for transformer core, characterized in that: The invention comprises a base (1), wherein a conversion platform (21) is provided on the base (1), a motor is provided below the conversion platform (21), a rotating shaft (22) is connected to the conversion platform (21), a rotating workbench is installed outside the rotating shaft (22), a core shaft (23) is symmetrically installed on the rotating workbench, a circular turntable (24) is provided at the top of the core shaft (23), a positioning block (26) is installed on the circular turntable (24), and the positioning block (26) is used to install the template tooling. The base (1) is parallel to the Two groups of guide rods (31) are provided, and a top seat (32) is commonly installed on the top of the two groups of guide rods (31). An adjusting screw (33) is rotatably connected to the top seat (32), and an adjusting hand wheel (331) is installed on the top of the adjusting screw (33). The adjusting screw (33) is externally threadedly connected to a lifting seat (34), and a cylinder (35) is installed on the lifting seat (34). The output end of the cylinder (35) is connected to an adjustable slide (36), and two groups of polyurethane pressure plates (37) are oppositely arranged on the bottom of the adjustable slide (36).

2. The automatic transformer core wrapping machine according to claim 1, characterized in that: The polyurethane pressure plate (37) is slidably connected to the adjustable slide seat (36) and corresponds one-to-one with the positioning block (26).

3. The automatic transformer core wrapping machine according to claim 1, characterized in that: A plurality of material trays (11) are provided on adjacent sides of the base (1), and the material trays (11) are used for placing iron cores.

4. The automatic transformer core wrapping machine according to claim 1, characterized in that: A material rack is mounted on the base (1), and the material rack is used to mount a tape reel (25), and the tape reel (25) is rotatably connected to the material rack.

5. The automatic transformer core wrapping machine according to claim 1, characterized in that: The lifting seat (34) is slidably connected to the guide rod (31), a slider (41) is installed on the base (1), and a slide rail (42) slidably matched with the slider (41) is installed below the slider (41), a push rod (43) is installed on the top of the slider (41), and a blade (44) is installed at the front end of the push rod (43), and the blade (44) is used to cut the tape. Rigid springs (45) are provided on both sides of the blade (44), and the rigid springs (45) are used to fix the tape.

6. The automatic transformer core wrapping machine according to claim 5, characterized in that: The push rod (43) is sheathed with a protective cover (4).