阅读说明：本技术 特种电机用紫铜线圈的加工方法 (Processing method of red copper coil for special motor ) 是由 倪蕴之 朱永乐 孔祥国 徐军 刘文杰 于 2020-04-01 设计创作，主要内容包括：本发明公开了一种特种电机用紫铜线圈的加工方法,采用PCB板制程来制作紫铜线圈,首先设计紫铜线圈的线路图形,将若干根铜线沿360度旋转排列,形成中心具有小圆和外周具有大圆图案的线路图形,并对紫铜线圈的线路图形上的单根铜线的图形线段分段补偿后绘出菲林；然后开料裁切大铜板,并经过内层前处理线去除表面氧化层；再经双面涂布湿膜后烘干、曝光、显影和蚀刻形成大紫铜线圈板,最后分板形成单个紫铜线圈单元板。本发明通过运用PCB的部分制程来生产,采用湿膜覆盖住所要铜线,用化学蚀刻方式去除多余部分铜来形成360度旋转排列的单根铜线,不仅生产效率高,而且成本相对激光加工低,同时成品各项参数完全满足客户要求。(The invention discloses a processing method of a red copper coil for a special motor, which is characterized in that a PCB (printed Circuit Board) manufacturing process is adopted to manufacture the red copper coil, firstly, a circuit graph of the red copper coil is designed, a plurality of copper wires are arranged in a rotating mode along 360 degrees to form a circuit graph with a small circle at the center and a large circle pattern at the periphery, and a film is drawn after sectional compensation is carried out on a graph line segment of a single copper wire on the circuit graph of the red copper coil; cutting and cutting a large copper plate, and removing a surface oxidation layer through an inner layer pretreatment line; and then drying, exposing, developing and etching the double-sided coated wet film to form a large red copper coil plate, and finally dividing the plate to form a single red copper coil unit plate. The invention is produced by using partial manufacture procedure of the PCB, the required copper wires are covered by the wet film, and the redundant copper is removed by chemical etching to form single copper wires arranged in a 360-degree rotation manner, so that the production efficiency is high, the cost is low relative to laser processing, and simultaneously, all parameters of a finished product completely meet the requirements of customers.)

1. A processing method of a red copper coil for a special motor is characterized in that a PCB manufacturing process is adopted to manufacture the red copper coil, and the processing method specifically comprises the following steps:

step 1: designing a circuit pattern of the red copper coil, arranging a plurality of copper wires in a rotating mode along 360 degrees to form a circuit pattern with a small circle in the center and a large circle pattern on the periphery, and drawing a film after sectional compensation is carried out on a pattern line segment of a single copper wire on the circuit pattern of the red copper coil;

step 2: cutting a large copper plate with a corresponding size according to the size of the cut material, and removing a surface oxidation layer through an inner layer pretreatment line;

and step 3: transversely clamping the edges of the large copper plate by an inner-layer wet film coating machine, coating wet films on the two sides of the large copper plate, and drying;

and 4, step 4: erecting the films manufactured in the step 1 on the upper side surface and the lower side surface of the large copper plate by using a semi-automatic exposure machine, and then carrying out exposure operation;

and 5: developing and etching the exposed large copper plate, and adjusting corresponding etching speed according to different copper thicknesses during etching to form a large red copper coil plate containing a plurality of red copper coil unit plates;

step 6: and (4) manually dividing the plate, and cutting off the connecting copper wires between the plates of the large red copper coil plate to form a single red copper coil unit plate.

2. The processing method of the red copper coil for the special motor according to claim 1, characterized in that: in the step 1, the sectional compensation of the graph line segments of the red copper coil is to add less compensation in a dense area with the spacing less than 0.015mm and add more compensation in a sparse area with the spacing more than 0.015 mm.

3. The processing method of the red copper coil for the special motor according to claim 2, characterized in that: in the step 1, the sectional compensation of the graph line segments of the red copper coil is that the red copper coil graph is outwards compensated by 0.025mm at two sides of the dense area, and the red copper coil graph is outwards compensated by 0.075mm at two sides of the sparse area.

4. The processing method of the red copper coil for the special motor according to claim 1, characterized in that: and in the step 2, after the cut large copper plate is leveled, inner layer pretreatment is carried out to remove a surface oxide layer.

5. The processing method of the red copper coil for the special motor according to claim 1, characterized in that: in the step 4, a semi-automatic exposure machine is adopted for production, and exposure operation is carried out after the alignment degree parameter is adjusted to +/-0.025mm when the upper film and the lower film are erected.

6. The processing method of the red copper coil for the special motor according to claim 1, characterized in that: in the step 5, the etching speed is 1.0-2.0 m/min.

7. The processing method of the red copper coil for the special motor according to claim 1, characterized in that: and 6, packaging after the plates are subjected to FQC inspection and FQA spot inspection qualification after the plates are separated.

Technical Field

The invention relates to a processing method of a red copper coil, in particular to a processing method of a red copper coil for a special motor.

Background

With the increasing demand of various special motor (flat motor) products and the gradual development towards high performance (such as light weight, small volume, sensitive acceleration and deceleration reaction, low energy consumption and the like), the internal traditional enameled wire coil can not meet the demand, and the red copper (pure copper) strip is well applied in the field because the red copper strip has the advantages of good electric conduction, heat conduction, plasticity and the like. The thickness of the red copper (pure copper) strip is between 0.2mm and 0.4mm (selected according to different motor powers), the line widths of all line sections are unequal, if the existing laser cutting is adopted, the reflection interference can be generated to laser along with the melting of copper in the cutting process, the line width dimensional tolerance of a finished product can be only controlled within the range of +0.2/-0.2mm, the line edges are not parallel and level, and unfixed position copper nodules can be generated, so that the use requirement can not be met, and the processing efficiency is extremely low.

Disclosure of Invention

In order to overcome the defects, the invention provides the processing method of the red copper coil for the special motor, and the red copper coil is processed by using partial manufacture procedure of a PCB (printed Circuit Board), so that not only can each performance index of the product meet the use requirement, but also the processing efficiency is greatly improved.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a processing method of a red copper coil for a special motor adopts a PCB manufacture procedure to manufacture the red copper coil, and specifically comprises the following steps:

step 1: designing a circuit pattern of the red copper coil, arranging a plurality of copper wires in a rotating mode along 360 degrees to form a circuit pattern with a small circle in the center and a large circle pattern on the periphery, and drawing a film after sectional compensation is carried out on a pattern line segment of a single copper wire on the circuit pattern of the red copper coil;

step 2: cutting a large copper plate with a corresponding size according to the size of the cut material, and removing a surface oxidation layer through an inner layer pretreatment line;

and step 3: transversely clamping the edges of the large copper plate by an inner-layer wet film coating machine, coating wet films on the two sides of the large copper plate, and drying;

and 4, step 4: erecting the films manufactured in the step 1 on the upper side surface and the lower side surface of the large copper plate by using a semi-automatic exposure machine, and then carrying out exposure operation;

and 5: developing and etching the exposed large copper plate, and adjusting corresponding etching speed according to different copper thicknesses during etching to form a large red copper coil plate containing a plurality of red copper coil unit plates;

step 6: and (4) manually dividing the plate, and cutting off the connecting copper wires between the plates of the large red copper coil plate to form a single red copper coil unit plate.

As a further improvement of the invention, in the step 1, the sectional compensation of the graphic line segment of the red copper coil is to add less compensation in the dense area with the spacing less than 0.015mm and add more compensation in the sparse area with the spacing more than 0.015 mm.

As a further improvement of the present invention, in step 1, the line segment of the pattern of the red copper coil is compensated by segments to be 0.025mm outward at two sides of the pattern of the red copper coil in the dense area, and 0.075mm outward at two sides of the pattern of the red copper coil in the sparse area.

As a further improvement of the invention, in the step 2, after the cut large copper plate is leveled, an inner layer pretreatment is performed to remove a surface oxide layer.

As a further improvement of the invention, in the step 4, a semi-automatic exposure machine is adopted for production, and the exposure operation is carried out after the alignment degree parameter is adjusted to +/-0.025mm when the upper film and the lower film are erected.

As a further improvement of the invention, in the step 5, the etching speed is 1.0-2.0 m/min.

As a further improvement of the invention, in the step 6, the plate is divided, and then packaged after being qualified by FQC inspection and FQA sampling inspection.

The invention has the beneficial effects that: the invention is produced by using partial manufacture procedure of the PCB, the required copper wires are covered by the wet film, and the redundant copper is removed by chemical etching to form single copper wires arranged in a 360-degree rotation manner, so that the production efficiency is high, the cost is low relative to laser processing, and simultaneously, all parameters of a finished product completely meet the requirements of customers.

Drawings

FIG. 1 is a supplementary view of a single red copper coil according to the present invention;

FIG. 2 is a schematic view of a single red copper coil according to the present invention;

FIG. 3 is a cut size diagram according to the present invention;

FIG. 4 is a schematic view of a large copper plate according to the present invention;

FIG. 5 is a schematic view showing the connection between the single copper plates according to the present invention;

fig. 6 is a schematic view of a monolithic red copper coil of the present invention.

Detailed Description

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

A processing method of a red copper coil for a special motor adopts a PCB manufacture procedure to manufacture the red copper coil, and specifically comprises the following steps:

a processing method of a red copper coil plate for a special motor comprises the following steps:

step 1: firstly, compensating the line segments of the graph in a segmented manner in a design stage (see figure 1), wherein the line width of each segment of a single line is gradually changed, less compensation (compensation of 0.025mm) is added in a dense area 1 with the distance smaller than 0.015mm, more compensation (compensation of 0.075mm) is added in a sparse area 2 with the distance larger than 0.015mm, and a special film for an inner exposure machine is drawn after the design is finished;

step 2: cutting large copper plates (shown in figure 3) with corresponding sizes according to the cutting size, properly leveling after cutting because the plates are provided in coils, and removing a surface oxidation layer through an inner layer pretreatment line;

and step 3: coating a wet film on an inner layer coating machine, wherein the edges of a transverse clamping plate are needed, and drying treatment is carried out after the wet film is coated on the two sides of the plate;

and 4, step 4: the semi-automatic exposure machine is adopted for production, when upper and lower films are erected, exposure operation is carried out after alignment parameters are adjusted to +/-0.025mm, and when the alignment precision deviation is large, the edges of etched lines are not parallel and level, so that the line width is influenced;

and 5: after the conventional parameter is imaged, special etching parameters (the etching speed is reduced to 1.5m/min, and the etched large plate is shown in figure 4) are adopted, the final line width and the line edge are adjusted to meet the requirements, the etching speed is a key influence parameter because the copper plate is thicker than the copper on the surface of the conventional plate and the non-reserved area needs to be etched through, and whether the line width of each section shown in figure 2 meets the requirements or not needs to be confirmed after etching;

step 6: manually separating plates, cutting connecting copper wires (shown in figure 5) between PCS (PCS) to form a delivery unit plate (a finished single PCS picture is shown in figure 3), wherein the unit is not damaged in the cutting process, the periphery is leveled, and packaging and delivery can be carried out after the FQC inspection and the FQA sampling inspection are qualified;

therefore, the invention is produced by applying partial manufacture procedure of the PCB, the required copper wires are covered by the wet film, the redundant copper is removed by chemical etching to form single copper wires (shown in figure 6) which are arranged in a 360-degree rotation manner, the production efficiency is high, the cost is low relative to laser processing, and all parameters of a finished product completely meet the requirements of customers.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.