CN114999803A - Single frame iron core forming method - Google Patents

Abstract

The invention relates to a method for forming a single-frame iron core. The method for forming the single-frame iron core comprises the following steps: winding the material belt on a first inner support to form an annular single-frame matrix, wherein the first inner support is annular; sleeving the annular single-frame base body on the square supporting module, and stretching the annular single-frame base body into a first rectangular single-frame base body by once separation of two module units of the square supporting module along a first direction perpendicular to the axis of the first inner support; along the first direction, the two module units are separated for the second time so as to stretch the first rectangular single-frame base body into a second rectangular single-frame base body. By adopting the technical scheme, the forming degree of the first rectangular single-frame base body and the second rectangular single-frame base body can be higher, and the driving force for driving the driving piece for separating the two module units can be reduced.

Description

Single frame iron core forming method

technical field

The invention relates to the technical field of transformers, in particular to a method for forming a single-frame iron core.

Background technique

During the processing of the single-frame iron core, the amorphous alloy material strip is generally wound on the annular inner support, and the driving member drives the support structure to stretch the material strip and the inner support into a rectangular single-frame iron core. In the above technical solution, the driving member needs to exert a large force on the support structure to complete the stretching of the material belt and the inner support, and the performance requirements of the driving member are relatively high, so that the cost of the driving member is relatively high; and the above technology is adopted. In the solution, the thickness of the inner support is larger and the strength is higher, which makes it difficult for the material strip and the inner support to be stretched into a specified shape, that is, the forming degree of the single-frame iron core is lower.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a single-frame iron core forming method in view of the problems that the existing single-frame iron core forming method has high requirements on the performance of the driving member and the formability of the wound iron core is poor.

The invention provides a method for forming a single-frame iron core. The method for forming a single-frame iron core includes the following steps: winding a material strip on a first inner support to form an annular single-frame base body, and the first inner support is annular; The frame base is sleeved on the square-supporting module, and along a first direction perpendicular to the axis of the first inner support, the two module units of the square-supporting module are separated at one time to stretch the annular single-frame base into a first rectangular single-frame base; Along the first direction, the two modular units are separated a second time to stretch the first rectangular single-frame base into a second rectangular single-frame base.

In one of the embodiments, before the step of secondary separation of the two module units, the step further includes the step of: piercing the second inner support in the first rectangular single frame base, and making the second inner support sleeve on the supporting module, The second inner support is annular; in the secondary separation step of the two module units, the two module units are separated and stretched for a second time, and the stretched second inner support and the second rectangular single frame form a third Rectangular single frame.

In one embodiment, the two module units in the square-supporting module are separated at one time, and the step of stretching the annular single-frame base into the first rectangular single-frame base is specifically as follows: inserting a sleeve between the annular single-frame base and the square-supporting module An auxiliary mold is provided, and the two mold units in the auxiliary mold are respectively sleeved on the outer sides of the two modular units, and the two mold units move in a direction away from each other with the separation of the two modular units.

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, the first side plate and the third side plate are arranged in parallel, and the first side plate and the third side plate are arranged in parallel. One 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, and the first side plate and the third side plate are respectively located on the two sides of the module unit. side.

In one embodiment, the auxiliary mold further 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 two sides of the bottom of the support plate, respectively, and the two mold units are slidably connected to Both ends of the bottom of the support plate; in the step of stretching the annular single-frame base into the first rectangular single-frame base by separating the two module units of the square-supporting module at one time, the side plates are located on both sides of the two module units, and the support plates overlap. Connected to the ring-shaped single frame base.

In one embodiment, the second inner support is penetrated in the first rectangular single-frame base, and before the step of making the second inner support sleeve on the support module, it 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 of the embodiments, the second inner support is a rectangular annular structure; in the step of piercing the second inner support in the first rectangular single frame base, and making the second inner support sleeve on the support module, the first The two inner side walls of the second inner support in the first direction are in contact with the square supporting module, and the gap between the two outer side walls of the second inner support in the first direction and the inner wall of the first rectangular single frame base is less than 1.5mm, The gap between the two inner side walls of the second inner support perpendicular to the first direction and the module unit is less than 1 mm, and the two outer side walls of the second inner support perpendicular to the first direction are in contact with the first rectangular single frame base .

In one of the embodiments, the modular unit includes a first segment and a second segment that are connected, the circumferential structural dimension of the first segment is smaller than the circumferential structural dimension of the second segment, and the second segment is located below the first segment; in In the step of arranging the auxiliary mold between the annular single-frame base and the support module, the mold unit is sleeved on the first section; a second inner support is inserted into the first rectangular single-frame base, and the second inner support is sleeved In the step of setting on the support module, the second inner support is sleeved on the first section.

In one embodiment, 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, and the first rectangular single-frame base and the second rectangular single-frame base are adjacent to each other. There is a transition arc between the two side walls.

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

In one embodiment, in the step of winding the material strip on the first inner support to form the annular single-frame base body, the first inner support is sleeved with a mandrel, and the mandrel is fitted with the first inner support; The annular single-frame base body is sleeved on the square-supporting module in the step, and the square-supporting module drives the core mold to separate from the first inner support.

In one embodiment, the square-supporting module is arranged on the operating table, and in the step of covering the annular single-frame base on the square-supporting module, the annular single-frame base is placed on the operating table, and the operating table and the annular single-frame are placed on the operating table. A support is arranged between the bases, and the support is fitted with the annular single-frame base to support the annular single-frame base.

In one of the embodiments, the method for forming a single-frame iron core further includes: wrapping a fixing tape on the outermost layer of the material tape, and connecting the front and rear ends of the fixing tape to form an outer hoop.

In this technical solution, the single-frame iron core forming method includes: winding a material strip on a first inner support to form an annular single-frame base; the annular single-frame base is sleeved on the support module, and the module unit is perpendicular to the first inner support. The first direction of the axis of the two modules is separated once to stretch the annular single-frame base into a first rectangular single-frame base; the two modular units are separated twice to stretch the first rectangular single-frame base into a second rectangular single-frame base. With the above technical solution, the module unit is separated once and twice along the first direction, and the annular single-frame base is stretched into a first rectangular single-frame base and then stretched into a second rectangular single-frame base. The driving force for unit separation is reduced, thereby reducing the performance requirements of the driving member for driving the separation of the two modular units, thereby reducing the cost of the driving member, that is, reducing the overall cost of the production equipment; The annular single-frame base body is stretched into the second rectangular single-frame base body, which can make the second rectangular single-frame base body have a higher formability, thereby improving the performance of the single-frame iron core.

Description of drawings

1 is a schematic structural diagram of a single-frame iron core sleeved on a support module provided by an embodiment;

FIG. 2 is an exploded view of a single-frame iron core, a support and a support module provided by an embodiment;

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

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

5 is a schematic structural diagram of an auxiliary mold provided by an embodiment from a third viewing angle;

FIG. 6 is a flowchart of a method for forming a single-frame iron core according to an embodiment.

Component label description:

1. Material belt; 2. First inner support; 3. Ring-shaped single frame base; 4. Supporting module; 41. Module unit; 411. First section; 412, Second section; 5. Auxiliary mold; unit; 511, the first side plate; 512, the second side plate; 513, the third side plate; 52, the support plate; 53, the side plate; 6, the support.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, 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 present invention. However, the present invention can be implemented in many other ways different from those described herein, and 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 by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit. 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 situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

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

An embodiment of the present invention provides a method for forming a single-frame iron core. Referring to Figure 6, the single-frame iron core forming method includes the following steps:

The material tape 1 is wound on the first inner support 2 to form a ring-shaped single frame base 3, and the first inner support 2 is annular (refer to FIG. 1 );

The annular single frame base 3 is sleeved on the square supporting module 4, and along the first direction perpendicular to the axis of the first inner support 2, the two module units 41 of the square supporting module 4 are separated at one time to pull the annular single frame base 3. extending into a first rectangular single-frame base;

Along the first direction, the two modular units are separated a second time to stretch the first rectangular single-frame base into a second rectangular single-frame base.

In the above technical solution, the cross-section of the annular single-frame base 3 is semicircular, the outer side wall of the annular single-frame base 3 is a tapered surface, the inner sidewall 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 iron core, the inner side wall of the annular single-frame base body 3 is set downward, and the inner side walls of the first rectangular single-frame base body and the second rectangular single-frame base body are set downward, so that no need for the production of the single-frame wound core The single-frame coiled iron core is turned over, and it does not need to be turned when assembling multiple single-frame coiled iron cores, which improves the processing efficiency, and can avoid the loose deformation of the material strip 1 caused by the overturning of the single-frame coiled iron core, thereby reducing the defective rate.

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

With the above technical solution, the module unit 41 undergoes primary separation and secondary separation along the first direction, and 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. The driving force for driving the separation of the module units 41 is reduced, thereby reducing the performance requirements of the driving member for driving the separation of the two module units 41, thereby reducing the cost of the driving member, that is, reducing the overall cost of the production equipment; and after two The secondary stretching stretches the annular single-frame base into the second rectangular single-frame base, so that the second rectangular single-frame base can have a higher formability, thereby improving the performance of the single-frame iron core.

In one embodiment, before the secondary separation of the two module units further includes the step of: piercing the second inner support in the first rectangular single frame base, and making the second inner support sleeve on the supporting module, the second inner support The support is annular. In the second separation step of the two modular units, the two modular units are separated and stretched for a second time, and the stretched second inner support and the second rectangular single frame form a third rectangular single frame. With the above technical solution, the stretched second inner support and the first inner support are part of the third rectangular single frame, which can reduce the thickness of the first inner support and further reduce the driving force for the separation of the driving module unit 41 , that is, the performance requirements for the driving part are further reduced, and the forming degree 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, and the structural strength of the superimposed structure of the first inner support 2 and the second inner support is smaller than the thickness of the first inner support 2 and equal to the first inner support. The thickness of the inner support 2 and the second inner support is equal to the structural strength of the inner support. Therefore, the above-mentioned technical solution can reduce the driving force for the secondary separation of the two module units 41, that is, the performance requirements for the driving element can be further reduced. .

In one embodiment, the two module units 41 in the square-supporting module 4 are separated at one time, and the step of stretching the annular single-frame base 3 into the first rectangular single-frame base is as follows: between the annular single-frame base 3 and the square-supporting module The auxiliary mold 5 is sleeved between 4, and the two mold units 51 in the auxiliary mold 5 are sleeved on the outer sides of the two modular units 41 respectively, and the two mold units 51 move toward each other with the separation of the two modular units 41. Move away from it. In the above technical solution, when the square supporting module 4 is separated at one time, the mold unit 51 is attached to the inner side wall of the first rectangular single frame base.

In one embodiment, before the step of inserting a second inner support in the first rectangular single-frame base, and making the second inner support sleeve on the support module, it further includes: disassembling the auxiliary mold 5, and placing the second inner support. The support is placed between the modular 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 slightly approached along the first direction to facilitate the installation of the second inner support.

3 to 5 , 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 511 The boards 512 are perpendicular to each other, the first side board 511 and the third side board 513 are arranged in parallel, the first side board 511 and the third side board 513 are located on both sides of the second side board 512 respectively, and the third side board 513 is located on 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 at one time, 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 framing the base body, the module unit 41 and the mold unit 51 sway with each other, thereby ensuring a high degree of forming of the first rectangular single frame base body.

Referring to FIGS. 3 to 5 , in one embodiment, the auxiliary mold 5 further 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 side plates at the bottom of the support plate 52 . side, the two mold units 51 are slidably connected to the two 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 are overlapped on 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 side wall of the first rectangular single-frame base body is abutted with the two side plates 53, thereby The straightness of the first rectangular single-frame base can be further improved. Since there will be a gap between the two module units 41 when they are separated, the above structure can prevent the material tape 1 and the first inner support 2 from moving toward two sides when the annular single-frame base 3 is stretched into the first rectangular single-frame base. The gaps between the individual module units 41 are convex and concave, so that the straightness of the first rectangular single frame base can be improved. With the above structure, the support plate 52 is overlapped on the annular single frame base 3, and the structural stability of the support plate 52 is good, 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. Formability of the matrix.

In one embodiment, the inner frames of the first rectangular single-frame base and the third rectangular single-frame base are rectangular structures, 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 strips 1 on the first rectangular single-frame base body and the third rectangular single-frame base body can have transition arc surfaces at the bends, so that the material strips 1 can be prevented from being deformed and broken.

Specifically, since the inner wall of the first rectangular single-frame base body is attached to the auxiliary mold 5 , the inner wall of the third rectangular single-frame base body is attached to the square-supporting 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 a transition arc surface between the second side plate 512 and the third side plate 513, so that the module unit 41 can convert the annular single frame base 3 When the first rectangular single-frame base is stretched, the connection between the inner side walls of the first rectangular single-frame base has a transition arc surface. The part of the module unit 41 for stretching the first rectangular single-frame base has a rectangular structure, and there is a transition arc between the two adjacent side walls of the module unit 41, so that the module unit 41 can stretch the second rectangular single-frame base. When the third rectangular single-frame base is stretched, there is a transition arc surface between the inner side walls of the first rectangular single-frame base.

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 is stretched and connected to the first rectangular single-frame base and the module unit 41 . fit. In the step of inserting a second inner support in the first rectangular single frame base, and making the second inner support sleeve on the square supporting module, the two inner side walls of the second inner support in the first direction and the square supporting module 4, the gap between the two outer side walls of the second inner support in the first direction and the inner wall of the first rectangular single frame base is less than 1.5mm; the two inner sides of the second inner support perpendicular to the first direction The gap between the wall and the module unit 41 is less than 1 mm, and the two outer side walls of the second inner support perpendicular to the first direction are in contact with the first rectangular single frame base. Since the second inner support and the first rectangular single-frame base are stretched in the first direction when the two module units 41 are separated for the second time, the two inner side walls and the supporting side of the second inner support in the first direction are set. The modules 4 are attached to each other, so that after the second inner support is stretched by the supporting module 4, the forming degree of the second inner supporting is better, that is, the forming degree of the third rectangular single frame base body is better; During stretching, the positions of the two side walls perpendicular to the first direction of the second inner support will not change, so the two outer sides of the second inner support perpendicular to the first direction will not change. The wall is in contact with the first rectangular single-frame base, so that the stretched second inner support in the third rectangular single-frame base can be in contact with the second rectangular single-frame base. In addition, the gap between the two outer side walls of the second inner support in the first direction and the inner wall of the first rectangular single frame base is less than 1.5mm, and the two inner side walls of the second inner support perpendicular to the first direction and the module unit The gap between the 41 is less than 1 mm, and this arrangement facilitates the installation of the second inner support between the support module 4 and the first rectangular single-frame base.

Referring to FIG. 2 , in one embodiment, the module unit 41 includes a first segment 411 and a second segment 412 that are connected to each other. The circumferential structural dimension of the first segment 411 is smaller than the circumferential structural dimension of the second segment 412 . 412 is located below the first segment 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 piercing the second inner support in the first rectangular single frame base, and making the second inner support sleeve on the support module, the second inner support is sleeved on the first section 411, and the second inner support overlaps 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 kept between the support module 4 and the first rectangular single frame base, and the second inner support can be The axis remains at the specified position upwards.

In one embodiment, in the first separation step of the module units 41 , the two module units 41 are driven to separate by the first driving member; in the second separation step of the module units 41 , a second driver is placed between the two module units 41 The first driving member and the second driving member simultaneously drive the two module units 41 to separate. Since the inside of the annular single-frame base 3 only has the first inner support 2, in one separation step of the module unit 41, the first driver drives the module unit 41 to stretch the annular single-frame base 3 into a first rectangular single-frame base, and the first The one-time separation of the module unit 41 can be driven when the driving force of the driving member is small. Since the module unit 41 stretches the second inner support and the first rectangular single-frame base in the second separation step of the module unit 41, the above technical solution is adopted to simultaneously drive the module unit 41 through the first driving member and the second driving member. In this way, the second separation of the module unit 41 can be driven by the small driving force of the first driving member and the second driving member. Therefore, using 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 larger than the thickness of the first inner support 2, so that the strength of the first inner support 2 is relatively small, so that the driving force for driving the two module units 41 to be separated at one time can be reduced, thereby reducing the The performance requirements for the first driving member; and although the strength of the second inner support is relatively high, the first driving member and the second driving member simultaneously drive the support module 4 to separate and stretch the second inner support and the first rectangle. 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.

In one embodiment, in the step of winding the material strip 1 on the first inner support 2 to form the annular single frame base 3, the first inner support 2 is sleeved with a core mold, and the core mold is attached to the first inner support 2 In the step of setting the annular single frame base body 3 on the square supporting module 4 , the supporting square module 4 drives the mandrel to separate from the first inner support 2 . The core mold is provided, so that the material strip 1 is wound on the first inner support 2 to form a ring-shaped single-frame base 3. When the material strip 1 is wound on the first inner support 2, the first inner support 2 is not deformed, thereby The structural dimensions of the annular single-frame base 3 can meet the standard. The core mold is a circular structure, and the side wall of the core mold is provided with a gap. When the core mold is inserted into the first inner support 2, the wedge is fixed in the gap, so that the core mold and the first inner support 2 are connected. Adhering to each other and fixing between the two. The shape of the wedge is the same as the shape of the notch.

Referring to FIG. 2 , in one embodiment, the square-supporting module 4 is arranged on the operating table, and in the step of setting the annular single-frame base 3 on the square-supporting module 4 , the annular single-frame base 3 is placed on the operating table, and the operation is performed. A support 6 is arranged between the table and the annular single-frame base 3 , and the support 6 is attached to 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 body 3 to prevent the material strip 1 on the annular single frame base body 3 from being loosely deformed. In the step of placing the annular single-frame base 3 on the supporting module 4, the support 6 is hung on the annular single-frame base 3, and when the annular single-frame base 3 is placed on the operating table, the supporting member 6 is located on the operating table and the annular single frame base 3 .

In one embodiment, in the step of placing the annular single-frame base 3 on the support module 4, the operating table is in the vertical direction, a mounting shaft is sandwiched between the two module units 41, and a mounting shaft is provided on the mandrel. Through hole, the annular single frame base 3 and the core die are sleeved on the installation shaft, and the installation through hole and the installation shaft are transitionally matched. Before the module unit 41 is separated once, the wedge of the mandrel is removed, and then the operating table is switched to the horizontal direction, the square support module 4 pushes out the mandrel, and the mandrel is separated from the first inner support 2. At this time, the staff Remove the mounting shaft and mandrel from the console.

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

The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features It is considered to be the range described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (13)

1. a single-frame iron core forming method is characterized in that, the single-frame iron core forming method comprises the following steps: The material strip (1) is wound on a first inner support (2) to form an annular single-frame base (3), and the first inner support (2) is annular; The annular single frame base (3) is sleeved on the square supporting module (4), and along the first direction perpendicular to the axis of the first inner support (2), the square supporting module (4) is The two module units (41) are separated at one time to stretch the annular single-frame base (3) into a first rectangular single-frame base; Along the first direction, two of the module units (41) are separated for a second time to stretch the first rectangular single-frame base into a second rectangular single-frame base. 2. The method for forming a single-frame iron core according to claim 1, characterized in that, before the step of secondary separation of two of the modular units (41), the step further comprises: A second inner support is passed through the first rectangular single-frame base, and the second inner support is sleeved on the support module (4), and the second inner support is annular; In the second separation step of the two module units (41), the second inner support is separated and stretched by the two module units (41) for a second time, and the stretched second inner support is separated from the second inner support. The second rectangular single frame forms a third rectangular single frame. 3. The method for forming a single-frame iron core according to claim 2, wherein the two module units (41) in the square-supporting module (4) are separated at one time, and the annular single-frame base body (3) is pulled The steps of extending into the first rectangular single-frame base are as follows: An auxiliary mold (5) is sleeved between the annular single-frame base (3) and the square supporting module (4), and the two mold units (51) in the auxiliary mold (5) are sleeved respectively in the two mold units (51). The outer sides of the two modular units (41), and the two mold units (51) move in a direction away from each other with one separation of the two modular units (41). The method for forming a single-frame iron core according to claim 3, wherein the mold unit (51) comprises a first side plate (511), a second side plate (512) and a third side plate (513) , the first side plate (511) is perpendicular to the second side plate (512), the first side plate (511) and the third side plate (513) are arranged in parallel, the first side plate (511) The board (511) and the third side board (513) are respectively located on both sides of the second side board (512), and the second side board is located on the module unit (41) away from the other module On one side of the unit, the first side plate (511) and the third side plate (513) are respectively located on both sides of the module unit (41). 5. The single-frame iron core forming method according to claim 3, characterized in that, The auxiliary mold (5) further comprises 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 the On both sides of the bottom of the support plate (52), the two mold units (51) are respectively slidably connected to both ends of the bottom of the support plate (52); In the step of stretching the annular single-frame base (3) into a first rectangular single-frame base by separating the two module units (41) of the square-supporting module (4) at one time, the side plates (53) are located at On both sides of the two modular units (41), the support plates (52) are overlapped on the annular single-frame base (3). 6 . The method for forming a single-frame iron core according to claim 3 , wherein a second inner support is passed through the first rectangular single-frame base, and the second inner support is sleeved on the support. 7 . The steps on the square module also include: 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. 7 . The method for forming a single-frame iron core according to claim 2 , wherein the second inner support is a rectangular annular structure; the second inner support is penetrated in the first rectangular single-frame base, and the In the step that the second inner support is sleeved on the square-supporting module, the two inner side walls of the second inner support in the first direction are abutted with the square-supporting module (4). The gap between the two outer side walls supported in the first direction and the inner wall of the first rectangular single frame base is less than 1.5mm, and the two inner side walls of the second inner support perpendicular to the first direction The gap between the module unit (41) and the module unit (41) is less than 1 mm, and the two outer sidewalls of the second inner support perpendicular to the first direction are attached to the first rectangular single-frame base. 8. The method for forming a single-frame iron core according to claim 3, wherein the modular unit (41) comprises a first segment (411) and a second segment (412) that are connected, and the first segment (412) The circumferential structural dimension of 411) is smaller than the circumferential structural dimension of the second segment (412), and the second segment (412) is located below the first segment (411); 3) In the step of arranging the auxiliary mould (5) between the square supporting module (4), the mould unit (51) is sleeved on the first section (411); in the first rectangular In the step of inserting a second inner support in the base of the single frame, and making the second inner support sleeved on the support module, the second inner support is sleeved on the first section (411) . 9 . The method for forming a single-frame core according to claim 2 , wherein the inner frame of the first rectangular single-frame base, the second rectangular single-frame base and the third rectangular single-frame base is a rectangle. 10 . Structure, the first rectangular single-frame base body and the second rectangular single-frame base body have transition arc surfaces between adjacent two side walls. 10. The method for forming a single-frame iron core according to claim 1, characterized in that, in the step of separating the two modular units (41) at one time, the two modular units (41) are driven to separate by a first driving member ; In the secondary separation step of the two described module units (41), a second driving member is placed between the two described module units (41), and the first driving member and the second driving member simultaneously drive the two The module unit (41) is separated. 11. The method for forming a single-frame iron core according to claim 1, wherein in the step of winding the material strip (1) on the first inner support (2) to form an annular single-frame base (3), the The first inner support (2) is sleeved with a core mold, and the core mold is fitted with the first inner support (2). ) in the above step, the square supporting module (4) drives the core mold to separate from the first inner support (2). 12. The single-frame iron core forming method according to claim 1, characterized in that, the square supporting module (4) is arranged on the operating table, and the annular single-frame base body (3) is sleeved on the square supporting module In the step above (4), the annular single-frame base (3) is placed on the operating table, and a support (6) is provided between the operating table and the annular single-frame base (3), so The supporting member (6) is attached to the annular single-frame base (3) to support the annular single-frame base (3). 13. The method for forming a single-frame iron core according to claim 1, wherein the method for forming a single-frame iron core further comprises: The outermost layer of the material tape (1) is wrapped with a fixing tape, and the first and last ends of the fixing tape are connected to each other to form an outer hoop.

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