WO2023236829A1

WO2023236829A1 - Single-frame iron core forming method

Info

Publication number: WO2023236829A1
Application number: PCT/CN2023/097458
Authority: WO
Inventors: 孟杰; 李佩福; 刘应福; 马玲; 李胜营
Original assignee: 天津珠峰硅钢股份有限公司; 特变电工智能电气有限责任公司; 特变电工京津冀智能科技有限公司
Priority date: 2022-06-06
Filing date: 2023-05-31
Publication date: 2023-12-14
Also published as: CN115223784A

Abstract

The present invention relates to a single-frame iron core forming method. The single-frame iron core forming method comprises: winding a material tape on a first inner support to form an annular single-frame base body, wherein the first inner support is elliptical ring-shaped or elliptical ring-like-shaped; sleeving a square supporting module with the annular single-frame base body; and performing primary separation on two module units of the square supporting module in a long axis direction of the first inner support to stretch the annular single-frame base body into a first rectangular single-frame base body, the length of the first rectangular single-frame base body in the long axis direction of the first inner support being greater than the length of the first rectangular single-frame base body in a short axis direction of the first inner support. By adopting the technical solution, the forming degree of the first rectangular single-frame base body is higher, and the driving force of a driving piece used for driving the two module units to be separated can be reduced.

Description

Single frame core forming method

Technical field

The present invention relates to the technical field of transformers, and in particular to a single frame core forming method.

Background technique

During the processing of the single-frame core, the amorphous alloy strip is generally wound around the annular inner support, and the driving part drives the support structure to stretch the strip and the inner support into a rectangular single-frame core. In the above technical solution, the inner support and the material strip are stretched from a circle to a rectangular shape. In this way, the deformation of the material strip and the inner support in the length direction of the single frame core is large, resulting in stress at the corners of the single frame core after stretching. Larger, resulting in poor formability of the rectangular single frame of the rolled core, and even problems such as bulging of the stem of the single frame core, resulting in a high defective rate of the single frame of the rolled core, resulting in waste of raw materials.

Contents of the invention

Based on this, it is necessary to provide a single frame core forming method to solve the problem that the existing single frame core forming method results in poor forming degree of the single frame core.

The invention provides a single frame iron core forming method. The single frame iron core forming method includes: winding a material strip on a first inner support to form an annular single frame base body, and the first inner support is an elliptical annular or elliptical-like annular shape; The single frame base body is sleeved on the support square module. Along the long axis direction of the first inner support, the two module units of the support square module are separated at one time to stretch the annular single frame base body into the first rectangular single frame base body. The length of the frame base in the long axis direction of the first inner support is greater than the length of the first rectangular single frame base in the short axis direction of the first inner support.

In one of the embodiments, the single frame core forming method further includes: along the long axis of the first inner support direction, the two modular units are separated twice to stretch the first rectangular single frame base into a second rectangular single frame base.

In one of the embodiments, the step of secondary separation of the two module units further includes the following steps: passing a second inner support through the first rectangular single frame base, and setting the second inner support on the supporting square module. , the second inner support is annular; in the second separation step of the two module units, the two module units are separated and stretched for the second time, and the stretched second inner support and the second rectangular single frame form the third Three rectangular single frames.

In one of the embodiments, the step of separating the two module units in the square support module at one time to stretch the annular single frame base into the first rectangular single frame base is specifically: nesting between the annular single frame base and the square support module In the auxiliary mold, two mold units in the auxiliary mold are respectively set on the outside of the two modular units, and the two mold units move away from each other as the two modular units are separated.

In one embodiment, the mold unit includes a first side plate, a second side plate and a third side plate, the first side plate is perpendicular to the second side plate, and both the first side plate and the third side plate are perpendicular to the first side plate. The long axis direction of the inner support is parallel, the first side plate and the third side plate are respectively located on both sides of the second side plate, the second side plate is located on the side of the module unit away from the other module unit, the first side plate and the third side plate are Three side panels are located on both sides of the modular unit.

In one embodiment, the auxiliary mold also includes a support plate and two side plates. The two side plates are arranged in parallel, and the two side plates are fixedly connected to both sides of the bottom of the support plate. The two mold units are slidingly connected to each other. Both ends of the bottom of the support plate; in the step of separating the two module units of the square module at one time and stretching the annular single frame base body into the first rectangular single frame base body, the side plates are located on both sides of the two module units, and the support plate overlaps Connected to the annular single frame base.

In one of the embodiments, the step of piercing the second inner support in the first rectangular single frame base and setting the second inner support on the support square module further includes the following steps: disassembling the auxiliary mold and placing the second inner support on the support module. Two inner supports are placed between the modular unit and the first rectangular single frame base.

In one embodiment, the second inner support is a rectangular annular structure; in the step of inserting the second inner support through the first rectangular single frame base and setting the second inner support on the supporting square module, Two inner supports The two inner side walls of the first inner support in the long axis direction are in contact with the supporting square module, and the second inner support is between the two outer side walls of the first inner support in the long axis direction and the inner wall of the first rectangular single frame base. The gap between the two inner walls of the second inner support in the short axis direction of the first inner support and the module unit is less than 1mm, and the gap between the second inner support in the short axis direction of the first inner support is less than 1mm. The two outer side walls are attached to the first rectangular single frame base body.

In one embodiment, the modular unit includes a first section and a second section connected, the circumferential structural size of the first section is smaller than the circumferential structural size of the second section, and the second section is located below the first section; In the step of setting the auxiliary mold between the annular single frame base and the supporting square module, the mold unit is set on the first section; a second inner support is inserted into the first rectangular single frame base, and the second inner support sleeve is In the step of arranging the support square module, the second inner support sleeve is arranged on the first section.

In one of the embodiments, the inner frames of the first rectangular single frame base, the second rectangular single frame base and the third rectangular single frame base have a rectangular structure, and the adjacent ones of the first rectangular single frame base and the second rectangular single frame base are There is a transition arc between the two side walls.

In one embodiment, in the first step of separating the two modular units, the first driving member drives the two modular units to separate; in the second step of separating the two modular units, a second module unit is placed between the two modular units. The first driving member and the second driving member simultaneously drive the two modular units to separate.

In one of the embodiments, in the step of winding the material strip on the first inner support to form an annular single frame base, the first inner support is equipped with a core mold, and the core mold is fit with the first inner support; In the step of setting the annular single frame base body on the supporting square module, the supporting square module drives the core mold to separate from the first inner support.

In one of the embodiments, the square support module is arranged on the operating table. In the step of setting the ring-shaped single frame base body on the square supporting module, the ring-shaped single frame base body is placed on the operating table. The relationship between the operating table and the ring-shaped single frame base body is A support member is arranged between the support members and the inner wall of the annular single frame base body to support the annular single frame base body.

In one embodiment, the single frame core forming method further includes: wrapping a fixing tape on the outermost layer of the material tape, and connecting the first and last ends of the fixing tape to form an outer hoop.

In this technical solution, the single frame core forming method includes: winding the material strip around the first inner support to form an annular single frame base, and the first inner support is an elliptical ring or a quasi-elliptical ring; and the annular single frame base is sleeved on the On the square support module, along the long axis direction of the first inner support, the two module units of the square support module are separated at one time to stretch the annular single frame base into a first rectangular single frame base, and the first rectangular single frame base is in the first inner support. The length of the support in the long axis direction is greater than the length of the first rectangular single frame base in the short axis direction of the first inner support. In the above technical solution, since the two module units are separated once along the long axis direction of the first inner support and the annular single frame base is stretched into a first rectangular single frame base, and the first rectangular single frame base is in the first inner support The length in the long axis direction is greater than the length of the first rectangular single frame base in the short axis direction of the first inner support, so that the deformation of the annular single frame base during the stretching process is small, that is, the first inner support can be made The deformation amount of the support and the material strip is small, so that the stress of the first rectangular single frame base body at the corner can be smaller, and the forming degree of the first rectangular single frame base body can be better, and the performance of the single frame core can be improved. Using the above technical solution, the deformation amount in the process of stretching the annular single frame base into the first rectangular single frame base is small, which can reduce the driving force for driving the two module units to separate, thereby reducing the impact on driving the two module units. The performance requirements of separate driving parts can reduce the cost of the driving parts, thereby reducing the overall cost of the production equipment. In addition, in the above technical solution, the first inner support is an elliptical ring or a quasi-elliptical ring, which can make the outer peripheral surface of the first inner support smooth and have no corners, thereby making the material belt and the first inner support more compliant, and can avoid the material The high stress on the belt at the corners causes the belt to deform and break.

Description of the drawings

Figure 1 is a flow chart of a single frame core forming method provided by an embodiment;

Figure 2 is a schematic structural diagram of an annular single-frame base mounted on a support square module according to an embodiment;

Figure 3 is an exploded view of a single ring-shaped single frame base, a support frame and a supporting square module provided by an embodiment;

Figure 4 is a schematic structural diagram of an auxiliary mold provided by an embodiment from a first perspective;

Figure 5 is a schematic structural diagram of the auxiliary mold provided by an embodiment from a second perspective;

Figure 6 is a schematic structural diagram of the auxiliary mold provided by an embodiment from a third perspective;

Figure 7 is a schematic structural diagram of a mandrel provided in an embodiment.

Component label description:
1. Material belt; 2. First inner support; 3. Ring-shaped single frame base; 4. Square support module; 41. Module unit; 411. First section; 412. Second section; 5. Auxiliary mold; 51. Mold Unit; 511, first side plate; 512, second side plate; 513, third side plate; 52, support plate; 53, side plate; 6, support; 7, heart mold; 71, wedge; 72, Install through holes.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways different from those described here. Those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "Plural" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; 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 an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

It should be noted that when an element is referred to as being "mounted" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

An embodiment of the present invention provides a single frame core forming method. Referring to Figure 1, the single frame core forming method includes:

The material strip 1 is wound around the first inner support 2 to form a ring-shaped single frame base 3, and the first inner support 2 is an elliptical ring or a quasi-elliptical ring (see Figure 2);

The annular single frame base 3 is placed on the support module 4. Along the long axis direction of the first inner support 2, the two module units 41 of the support module 4 are separated at one time to stretch the annular single frame base 3 into a first rectangular shape. Single frame base, the length of the first rectangular single frame base in the long axis direction of the first inner support 2 is greater than the length of the first rectangular single frame base in the short axis direction of the first inner support 2 .

In the above technical solution, the cross section of the annular single frame base 3 is a semicircle, the outer side wall of the annular single frame base 3 is a tapered surface, the inner side wall of the annular single frame base 3 is arc-shaped, and the outer side of the annular single frame base 3 is in the shape of an arc. The wall is an assembly surface. During the forming process of the single frame core, the inner side walls of the annular single frame base 3 are facing downward, and the inner side walls of the first rectangular single frame base and the second rectangular single frame base are both facing downward, so that there is no need to turn over when producing the single frame rolled core. Moreover, there is no need to turn over when assembling multiple single-frame rolled iron cores, which improves processing efficiency, and can avoid loose deformation of the material strip 1 caused by turning over single-frame rolled iron cores, thus reducing the defective product rate.

Optionally, the strip material is made of amorphous alloy, and the first inner support 2 and the second inner support are made of steel material.

In the above technical solution, since the two module units 41 are separated once along the long axis direction of the first inner support 2 and the annular single frame base 3 is stretched into the first rectangular single frame base, and the first rectangular single frame base is in the first The length of the inner support 2 in the long axis direction is greater than the length of the first rectangular single frame base in the short axis direction of the first inner support 2, so that the deformation of the annular single frame base 3 is smaller during the stretching process. That is to say, the deformation amount of the first inner support 2 and the material belt 1 can be smaller, so that the stress of the first rectangular single frame base body at the corner can be smaller, and the forming degree of the first rectangular single frame base body can be better, Improved single frame core performance. In addition, using the above technical solution, the deformation amount of the annular single frame base 3 during the process of being stretched into the first rectangular single frame base is small, which can reduce the driving force for driving the two module units 41 to separate, thereby reducing the impact on the driving force. The performance requirements of the driving parts of the two modular units 41 are separated, that is, the cost of the driving parts can be reduced, thereby reducing the overall cost of the production equipment. In addition, the first inner support 2 is an elliptical ring or a quasi-elliptical ring, which can make the outer peripheral surface of the first inner support 2 smooth without corners, thereby making the material belt 1 and the first inner support 2 more compliant, and can avoid the material belt 1. High stress at the corners causes the strip to deform and break.

In one embodiment, the single frame core forming method further includes: along the long axis direction of the first inner support 2, the two module units 41 are separated twice to stretch the first rectangular single frame base into a second rectangular single frame base. . Using the above technical solution, the module unit 41 undergoes one separation and two separations along the long axis direction of the first inner support 2 Separate, the annular single frame base 3 is stretched into a first rectangular single frame base and then stretched into a second rectangular single frame base. This can reduce the driving force for the separation of the driving module unit 41, thereby reducing the cost of driving the two The performance requirements of the driving parts separated by each module unit 41, thereby reducing the cost of the driving parts, that is, reducing the overall cost of the production equipment; and after two stretches, the annular single frame base is stretched into a second rectangular single frame base, The second rectangular single frame base body can be formed to a higher degree, thereby improving the performance of the single frame core.

In one embodiment, before the two module units are separated for the second time, the step further includes: inserting a second inner support into the first rectangular single frame base, and setting the second inner support on the supporting square module. The supports are ring-shaped. In the step of secondary separation of the two modular units, the two modular units are separated and stretched for a second time and the second inner support is stretched. The stretched second inner support and the second rectangular single frame form a third rectangular single frame. Using the above technical solution, the stretched second inner support and the first inner support are parts of the third rectangular single frame, which can reduce the thickness of the first inner support and further reduce the driving force for separation of the driving module unit 41 , that is, the performance requirements for the driving parts are further reduced, and the formability of the first rectangular single frame can also be improved. In addition, in order to make the structural size of the third rectangular single frame meet the requirements, the thickness of the inner support of the third rectangular single frame needs to meet a certain amount. The structural strength of the first inner support 2 and the second inner support superimposed is less than the thickness equal to the first The thickness of the inner support 2 and the second inner support sums up the structural strength of the inner support. Therefore, using the above technical solution can reduce the driving force for driving the two module units 41 to separate twice, that is, the performance requirements for the driving parts can be further reduced. .

In one embodiment, the two module units 41 in the square module 4 are separated at one time, and the step of stretching the annular single frame base 3 into a first rectangular single frame base is specifically: between the annular single frame base 3 and the square module 4 is nested between the auxiliary mold 5, the two mold units 51 in the auxiliary mold 5 are respectively nested on the outside of the two module units 41, and the two mold units 51 move toward each other as the two module units 41 are separated once. Move in the away direction. In the above technical solution, when the square supporting module 4 is separated once, the mold unit 51 is in contact with the inner side wall of the first rectangular single frame base.

In one embodiment, a second inner support is passed through the first rectangular single frame base, and the second inner support The step of laying on the square support module also includes: disassembling the auxiliary mold 5 and placing the second inner support between the module unit 41 and the first rectangular single frame base. After the auxiliary mold 5 is disassembled, there is a gap between the module unit 41 and the first rectangular single frame base, which facilitates the placement of the second inner support. In the above steps, before placing the second inner support between the module unit 41 and the first rectangular single frame base, the two module units 41 need to be brought slightly closer together in the first direction to facilitate the installation of the second inner support.

Referring to Figures 4 to 6, in one embodiment, the module unit 41 has a rectangular structure. The mold unit 51 includes a first side plate 511, a second side plate 512 and a third side plate 513. The first side plate 511 and the second side plate 513 have a rectangular structure. The plates 512 are vertical, the first side plate 511 and the third side plate 513 are arranged in parallel, the first side plate 511 and the third side plate 513 are respectively located on both sides of the second side plate 512, and the third side plate 513 is located in the module unit 41 On the side away from the other module unit 41 , the first side plate 511 and the third side plate 513 are located on both sides of the module unit 41 . When the two module units 41 are separated once, the first side plate 511 , the second side plate 512 and the third side plate 513 are all attached to the module unit 41 to avoid stretching the annular single frame base 3 into the first rectangular single frame. When the frame base is formed, the module unit 41 and the mold unit 51 sway with each other, thereby ensuring a high forming degree of the first rectangular single frame base.

Referring to Figures 4 to 6, in one embodiment, the auxiliary mold 5 also includes a support plate 52 and two side plates 53. The two side plates 53 are arranged in parallel, and the two side plates 53 are respectively fixedly connected to two sides of the bottom of the support plate 52. side, the two mold units 51 are respectively slidingly connected at both ends of the bottom of the support plate 52; in the step of separating the two module units 41 to stretch the annular single frame base 3 into the first rectangular single frame base, the side plates 53 are located at On both sides of the two module units 41, the support plates 52 overlap the annular single frame base 3. Optionally, the first side plate 511 and the third side plate 513 of the mold unit 51 are flush with the two side plates 53 respectively, so that the inner wall of the first rectangular single frame base is in contact with the two side plates 53, so that The straightness of the first rectangular single frame base can be further improved. Since a gap will occur between the two module units 41 when they are separated, the above structure can prevent the material belt 1 and the first inner support 2 from moving in the direction when the annular single frame base 3 is stretched into the first rectangular single frame base. The gap between the two module units 41 is convex, thereby improving the straightness of the first rectangular single frame base. Using the above structure, the support plate 52 overlaps the annular single frame base 3, and the structural stability of the support plate 52 is better, thereby preventing the support plate 52 from being displaced and affecting the first rectangular single frame when the two module units 41 are separated at one time. The formability of the matrix.

In one embodiment, the inner frames of the first rectangular single frame base and the third rectangular single frame base have a rectangular structure, and there are two adjacent side walls between the first rectangular single frame base and the third rectangular single frame base. Transition arc. In this way, the material strip 1 on the first rectangular single frame base and the third rectangular single frame base can have a transitional arc surface at the bending part, thereby preventing the material strip 1 from deforming and breaking.

Specifically, since the inner wall of the first rectangular single frame base is in contact with the auxiliary mold 5, the inner wall of the third rectangular single frame base is in contact with the square support module 4. There is a transition arc surface between the first side plate 511 and the second side plate 512 of the mold unit 51, and there is a transition arc surface between the second side plate 512 and the third side plate 513, so that the module unit 41 converts the annular single frame base into 3. When stretched into the first rectangular single frame base body, the connection between the inner side walls of the first rectangular single frame base body has a transition arc surface. The part of the module unit 41 used to stretch the first rectangular single frame base has a rectangular structure, and there are transition arc surfaces between adjacent two side walls of the module unit 41, so that the module unit 41 can stretch the second rectangular single frame base. When stretched into a third rectangular single frame base body, there are transition arc surfaces between the inner side walls of the first rectangular single frame base body.

In one embodiment, the second inner support is a rectangular annular structure, and a transition arc surface is provided at the corner of the second inner support, so that the second inner support can be stretched to connect with the first rectangular single frame base and module unit 41 fit together. In the step of piercing the second inner support in the first rectangular single frame base and setting the second inner support on the support module, the two inner sides of the second inner support in the long axis direction of the first inner support The wall and the supporting square module 4 fit together, and the gap between the two outer walls of the second inner support in the long axis direction of the first inner support and the inner wall of the first rectangular single frame base is less than 1.5mm; The gap between the two inner walls in the short axis direction of the first inner support and the module unit 41 is less than 1 mm, and the second inner support is in the short axis direction of the first inner support. The two outer side walls of the upper body are fitted with the first rectangular single frame base body. Since when the two module units 41 are separated for the second time, the second inner support and the first rectangular single frame base are stretched in the long axis direction of the first inner support, the second inner support is set to be in the long axis direction of the first inner support. The two inner walls in the axial direction fit with the support module 4, so that after the second inner support is stretched by the support module 4, the forming degree of the second inner support is better, that is, the formation of the third rectangular single frame base body The degree is better; because when the second inner support is stretched, the position of the two side walls of the second inner support in the short axis direction of the first inner support will not change in the short axis direction of the first inner support, so The two outer side walls of the second inner support in the short axis direction of the first inner support are arranged to fit with the first rectangular single frame base, so that in the third rectangular single frame base, the stretched second inner support can be aligned with the first inner support. The second rectangular single frame base body is attached to each other. In addition, the gap between the two outer side walls of the second inner support in the long axis direction of the first inner support and the inner wall of the first rectangular single frame base is less than 1.5mm, and the second inner support is in the short axis direction of the first inner support. The gap between the two inner walls and the module unit 41 is less than 1 mm. This arrangement facilitates the installation of the second inner support between the square support module 4 and the first rectangular single frame base.

Referring to Figure 3, in one embodiment, the module unit 41 includes a connected first section 411 and a second section 412. The circumferential structural size of the first section 411 is smaller than the circumferential structural size of the second section 412. 412 is located below the first section 411. In the step of setting the auxiliary mold 5 between the annular single frame base 3 and the square supporting module 4, the mold unit 51 is sleeved on the first section 411, and the mold unit 51 is overlapped on the second section 412 to support the mold unit. 51. In the step of inserting the second inner support into the first rectangular single frame base and setting the second inner support on the support module, the second inner support is set on the first section 411, and the second inner support is Connected to the second section 412, the second section 412 is used to support the second inner support, so that the second inner support is maintained between the supporting square module 4 and the first rectangular single frame base, and the second inner support can be positioned between The axis remains in the specified position.

In one embodiment, in the first separation step of the module unit 41, the first driving member is used to drive the two module units 41 to separate; in the second separation step of the module unit 41, a place is placed between the two module units 41. A second driving member is disposed, and the first driving member and the second driving member simultaneously drive the two module units 41 to separate. Since the annular single frame base 3 only has the first inner support 2 inside, the first driving member drives the module unit 41 to stretch the annular single frame base 3 into a first rectangular single frame base in one separation step of the module unit 41. A small driving force of the driving member can complete the separation of the module unit 41 once. Since in the secondary separation step of the module unit 41, the module unit 41 stretches the second inner support and the first rectangular single frame base, the above technical solution is adopted to simultaneously drive the second module unit 41 through the first driving member and the second driving member. In this way, the driving forces of the first driving member and the second driving member are both small, and the second separation of the module unit 41 can be completed. Therefore, adopting the above technical solution can reduce the performance requirements for the first driving member and the second driving member, thereby reducing the overall cost of the production equipment. Optionally, the thickness of the second inner support can be made greater than the thickness of the first inner support 2, so that the strength of the first inner support 2 is smaller, thereby reducing the driving force for driving the two module units 41 to separate at one time, thereby reducing the Performance requirements for the first driving member; and although the second inner support is stronger, the first driving member and the second driving member simultaneously drive the square support module 4 to separate and stretch the second inner support and the first rectangular The single frame base body further reduces the driving force requirements for the first driving member and the second driving member. Optionally, the first driving member is a hydraulic cylinder, and the second driving member is a hydraulic mine.

Referring to Figure 7, in one embodiment, in the step of winding the material strip 1 on the first inner support 2 to form an annular single frame base 3, the first inner support 2 is equipped with a core mold 7, and the core mold 7 is connected to the first inner support 2. An inner support 2 is attached to each other; in the step of setting the annular single frame base 3 on the support module 4, the support module 4 drives the core mold 7 to separate from the first inner support 2. The core mold 7 is provided so that in the step of winding the material strip 1 around the first inner support 2 to form the annular single frame base 3, when the material strip 1 is wound around the first inner support 2, the first inner support 2 will not deform. Therefore, the structural dimensions of the annular single frame base 3 can meet the standards. The mandrel 7 has a circular structure, and a gap is provided on the side wall of the mandrel 7. When the mandrel 7 is inserted into the first inner support 2, the wedge 71 is fixed in the gap, so that the mandrel 7 is connected to the first inner support 2. An inner support 2 is attached to each other and fixed therebetween. The shape of the wedge 71 is the same as the shape of the gap.

Referring to Figure 3, in one embodiment, the square supporting module 4 is placed on the operating table. In the step of setting the ring-shaped single frame base 3 on the square supporting module 4, the ring-shaped single frame base 3 is placed on the operating table, and the operation A support member 6 is provided between the table and the annular single frame base 3 . The support member 6 is in contact with the inner wall of the annular single frame base 3 to support the annular single frame base 3 . The support member 6 can support the annular single frame base 3 and prevent the material strip 1 on the annular single frame base 3 from loosening and deforming. In the step of setting the ring-shaped single frame base 3 on the supporting square module 4, the supporting member 6 is hung on the ring-shaped single frame base 3, and when the ring-shaped single frame base 3 is placed on the operating table, the supporting member 6 is located on the operating table. and between the annular single frame base 3.

In one embodiment, during the step of arranging the annular single frame base 3 on the supporting square module 4, the operating platform is in the vertical direction, and a mounting shaft is sandwiched between the two module units 41, and the mandrel 7 is provided with a Install the through hole 72, set the annular single frame base 3 and the mandrel 7 on the installation shaft, and make a transition fit between the installation through hole 72 and the installation shaft. Before the module unit 41 is separated once, remove the wedge of the core mold, and then switch the operating table to the horizontal direction. The support module 4 ejects the core mold 7, and the core mold 7 is separated from the first inner support 2. At this time The staff removed the installation shaft and mandrel 7 from the operating table.

In one embodiment, the single-frame core forming method further includes: wrapping a fixing tape, including a silicon steel tape, on the outermost layer of the material tape 1, and connecting the first and last ends of the fixing tape to each other to form an outer hoop. The fixed belt is a silicon steel belt. The two ends of the silicon steel strip are connected by argon arc spot welding. The material tape 1 is wound around the first inner support 2. Using the above structure, the silicon steel tape can seal the outermost interface of the material tape 1, thereby preventing the material tape 1 from loosening.

The technical features of the above embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, all possible combinations should be used. It is considered to be within the scope of this manual.

The above embodiments only express several embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention. Therefore, the scope of protection of the patent of the present invention should be determined by the appended claims.

Claims

A single frame core forming method, characterized in that the single frame core forming method includes:

The material strip (1) is wound around the first inner support (2) to form an annular single frame base (3), and the first inner support (2) is an elliptical ring or a quasi-elliptical ring;

Set the ring-shaped single frame base (3) on the square supporting module (4);

Along the long axis direction of the first inner support (2), the two module units (41) of the square support module (4) are separated at one time to stretch the annular single frame base (3) into a first rectangular single frame. Frame base, the length of the first rectangular single frame base in the long axis direction of the first inner support (2) is greater than the length of the first rectangular single frame base in the short axis of the first inner support (2) length in the direction.
The single frame core forming method according to claim 1, characterized in that the single frame core forming method further includes:

Along the long axis direction of the first inner support (2), the two modular units (41) are separated twice to stretch the first rectangular single frame base into a second rectangular single frame base.
The single frame core forming method according to claim 2, characterized in that the step of secondary separation of the two modular units (41) further includes the following steps:

A second inner support is inserted into the first rectangular single frame base, and the second inner support is sleeved on the support square module (4), and the second inner support is annular;

In the second separation step of the two modular units (41), the second inner support is stretched when the two modular units (41) are separated for the second time, and the stretched second inner support and The second rectangular single frame forms a third rectangular single frame.
The single frame core forming method according to claim 1, characterized in that, two module units (41) in the square support module (4) are separated at one time to stretch the annular single frame base body (3) into a third The specific steps for building a rectangular single frame base are:

An auxiliary mold (5) is set between the annular single frame base (3) and the square support module (4), The two mold units (51) in the auxiliary mold (5) are respectively sleeved on the outside of the two module units (41), and the two mold units (51) follow the two module units (41). ) separate and move away from each other.
The single frame core forming method according to claim 4, characterized in that the mold unit (51) includes a first side plate (511), a second side plate (512) and a third side plate (513), so The first side plate (511) is perpendicular to the second side plate (512), and the first side plate (511) and the third side plate (513) are both aligned with the first inner support (2 ) are parallel to the long axis direction, the first side plate (511) and the third side plate (513) are respectively located on both sides of the second side plate (512), and the second side plate is located on the On the side of the module unit (41) away from the other module unit, the first side plate (511) and the third side plate (513) are respectively located on both sides of the module unit (41).
The single frame core forming method according to claim 4, characterized in that:

The auxiliary mold (5) also includes a support plate (52) and two side plates (53). The two side plates (53) are arranged in parallel, and the two side plates (53) are fixedly connected to each other. On both sides of the bottom of the support plate (52), the two mold units (51) are respectively slidingly connected to the two ends of the bottom of the support plate (52);

In the step of separating the two module units (41) of the square support module (4) and stretching the annular single frame base (3) into a first rectangular single frame base, the side plate (53) is located On both sides of the two modular units (41), the support plates (52) overlap the annular single frame base (3).
The single frame core forming method according to claim 4, characterized in that a second inner support is inserted into the first rectangular single frame base, and the second inner support is sleeved on the support square module. The steps above also include the following steps:

The auxiliary mold (5) is disassembled and the second inner support is placed between the modular unit (41) and the first rectangular single frame base.
The single frame core forming method according to claim 3, characterized in that the second inner support is a rectangular annular structure; a second inner support is penetrated in the first rectangular single frame base, and the second inner support is In the step of installing the second inner support on the square support module, the two inner walls of the second inner support in the long axis direction of the first inner support (2) are opposite to the square support module (4). Fitting, the gap between the two outer side walls of the second inner support (2) in the long axis direction of the first inner support (2) and the inner wall of the first rectangular single frame base is less than 1.5mm. The gap between the two inner supports in the minor axis direction of the first inner support (2) and the module unit (41) is less than 1 mm, and the second inner support is within the first inner support. The two outer side walls in the short axis direction of (2) are in contact with the first rectangular single frame base body.
The single frame core forming method according to claim 4, characterized in that the modular unit (41) includes a connected first section (411) and a second section (412), and the first section (411) The circumferential structural size is smaller than the circumferential structural size of the second section (412), which is located below the first section (411); in the annular single frame base (3) In the step of setting the auxiliary mold (5) between the supporting square module (4), the mold unit (51) is placed on the first section (411); in the first rectangular single frame In the step of inserting a second inner support through the base and setting the second inner support on the support module, the second inner support is placed on the first section (411).
The single frame core forming method according to claim 3, characterized in that the inner frames of the first rectangular single frame base, the second rectangular single frame base and the third rectangular single frame base are rectangular structures, There is a transition arc surface between adjacent side walls of the first rectangular single frame base and the second rectangular single frame base.
The single frame core forming method according to claim 1, characterized in that, in a step of separating the two modular units (41), the first driving member is used to drive the two modular units (41) to separate; In the second separation step of the two modular units (41), a second driving member is placed between the two modular units (41), and the first driving member and the second driving member drive the two modules at the same time. unit (41)Separation.
The single frame core forming method according to claim 1, characterized in that in the step of winding the material strip (1) on the first inner support (2) to form the annular single frame base body (3), the first The inner support (2) is equipped with a core mold (7), which is oval or elliptical-like, and the core mold (7) is fit with the first inner support (2); In the step of arranging the ring-shaped single frame base (3) on the support module (4), the support module (4) drives the core mold (7) and the first inner support (2) phase separation.
The method for forming a single frame iron core according to claim 1, characterized in that the square support module (4) is arranged on an operating table, and the annular single frame base (3) is placed on the square support module (4). ) in the above step, the ring-shaped single frame base (3) is placed on the operating table, and a support (6) is provided between the operating table and the ring-shaped single frame base (3). It is fit with the annular single frame base (3) to support the annular single frame base (3).
The single frame core forming method according to claim 1, characterized in that the single frame core forming method further includes:

A fixing tape is wrapped in the outermost layer of the material tape (1), and the first and last ends of the fixing tape are connected to each other to form an outer hoop.