Launching propulsion coil forming tool and forming method

Abstract

The invention provides a launch propulsion coil forming tool and method. The launch propulsion coil forming tool comprises a base, a base plate, a plurality of movable sliding blocks, a driving assembly, a first movable block, a second movable block, a check block, a push block and a pressing plate. The substrate is arranged on the base; each movable sliding block is arranged in the corresponding guide hole in a relative sliding mode. The driving assembly is arranged on the lower side of the base plate and connected with the movable sliding block. The first movable block is arranged on the substrate and located at the upper nose end of the propelling coil. The second movable block is arranged on the substrate and located at the lower nose end of the propelling coil. The stop block is arranged on the substrate and envelops the circumferential outer side of the propelling coil; the pushing block is arranged between the propelling coil and the movable sliding block after finishing the outer contour shaping of the propelling coil; and the pressing plate covers the upper part of the propelling coil after finishing internal shaping of the propelling coil. The technical problem that in the prior art, a winding tool and a winding process cannot meet emission propulsion coils with complex shapes can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of propulsion coils, and in particular to a launching propulsion coil forming tool and a forming method. Background Art

[0002] The ground module is an important part of the maglev rail transit system. The ground module installed on the tracks on both sides of the maglev train interacts with the superconducting magnets installed on the maglev train to provide propulsion for the maglev train. The dimensional accuracy of the propulsion coil will greatly affect the electromagnetic performance of the coil, and then affect the propulsion force of the coil.

[0003] There are multiple structural forms of propulsion coils in the magnetic levitation stator module. For the runway-type propulsion coils with simple structures, only ordinary winding tooling and winding processes are needed to form them. However, for the propulsion coils with more complex shapes, special tooling and processes are required to ensure the dimensional accuracy of the coils.

[0004] At present, the existing winding tooling and winding processes cannot meet the needs of launch propulsion coils with more complex shapes. Summary of the invention

[0005] The present invention provides a launch propulsion coil forming tool and a forming method, which can solve the technical problem that the winding tool and winding process in the prior art cannot meet the requirements of a launch propulsion coil with a more complex shape.

[0006] According to one aspect of the present invention, a launch propulsion coil forming tool is provided, wherein the propulsion coil has a dislocation structure in the thickness direction, and the tool comprises a base, a base plate, a plurality of movable sliders, a driving assembly, a first movable block, a second movable block, a stop block, a push block and a pressure plate; The substrate is arranged on the base, and the substrate has a staggered structure adapted to the propulsion coil, so that the upper surface of the substrate contacts the lower surface of the propulsion coil, and a plurality of guide holes are arranged in the radial direction on the substrate; Each of the movable sliders can be relatively slidably disposed in the corresponding guide hole, and is used to expand and shape the propulsion coil; The driving assembly is disposed on the lower side of the substrate and connected to the movable slider, and is used to drive each movable slider to slide relatively along the corresponding guide hole; The first movable block is arranged on the base plate and is located at the upper nose end of the propulsion coil, and is used to realize the positioning and fixing of the propulsion coil during expansion; The second movable block is arranged on the base plate and is located at the lower nose end of the propulsion coil, and is used to control the coil size when the propulsion coil is moved; The stopper is arranged on the substrate and envelops the outer side of the propulsion coil in the circumferential direction, and is used to shape the outer contour of the propulsion coil during the process in which the moving slider slides outward in the circumferential direction; After the outer contour of the propulsion coil is shaped, the push block is disposed between the propulsion coil and the moving slider, and is used to shape the inside of the propulsion coil during the process in which the moving slider slides outward in the circumferential direction; After completing the internal shaping of the propulsion coil, the pressing plate is covered on the upper part of the propulsion coil to achieve the shaping of the propulsion coil in the thickness direction.

[0007] Preferably, the driving assembly includes a plurality of bearing seats and a plurality of lead screws, wherein the bearing seats are mounted on the lower surface of the base plate and are used for the installation and rotation of the lead screws; a bearing seat is mounted on each end of each lead screw, and each lead screw is connected to the corresponding movable slider to drive the movable slider to slide relatively along the corresponding guide hole.

[0008] Preferably, the pressing plate is connected to the base plate by bolts.

[0009] According to another aspect of the present invention, a method for forming a launch propulsion coil is provided, wherein the method uses any of the above-mentioned tooling to form the propulsion coil, and the method comprises: The middle part of the runway-shaped propulsion coil wound into a long strip is expanded along the propulsion direction; After the first movable block is inserted into the upper nose end of the propulsion coil and the second movable block is inserted into the lower nose end of the propulsion coil, the first movable block is fixed to one end of the base plate dislocation structure and the upper nose end of the propulsion coil is fixed, and the second movable block is fixed to the other end of the base plate dislocation structure, and the lower nose end of the propulsion coil and the second movable block can slide relative to each other; The driving assembly drives each movable slide block to slide radially outward until the outer side of the propulsion coil gradually contacts the stopper, so as to realize the expansion and outer contour shaping of the propulsion coil; After the outer contour of the propulsion coil is shaped, the driving assembly drives each movable slider to slide radially inward and places the push block between the propulsion coil and the movable slider; The driving assembly continues to drive each movable slider to slide radially outward until the push block gradually contacts the inner side of the propulsion coil, so as to achieve internal shaping of the propulsion coil; After the internal shaping of the propulsion coil is completed, the pressing plate is pressed against the propulsion coil and fixedly connected to the base plate to complete the shaping of the propulsion coil in the thickness direction.

[0010] Preferably, the expansion distance of the middle part of the propulsion coil is not less than 300 mm.

[0011] Preferably, the method further comprises: placing the completed propulsion coil together with the forming tooling into an oven for thermal curing, so that the turns of the propulsion coil are bonded together into a whole, thereby completing the shaping of the propulsion coil.

[0012] Preferably, the propulsion coil is formed by winding a monofilament enameled wire with insulating varnish on it to make it self-adhesive.

[0013] By applying the technical solution of the present invention, adopting the molding tool and molding method of the present invention, the dimensional accuracy of complex coils can be ensured, thereby ensuring the electromagnetic performance of the coils. The present invention can be applied to propulsion coils with relatively complex shapes for aerospace electromagnetic launch. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A schematic structural diagram of a launch propulsion coil forming tooling provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram showing a transmitting propulsion coil provided in an embodiment of the present invention being pulled apart along a propulsion direction is shown; Figure 3 A schematic diagram showing the assembly of a transmitting propulsion coil on a tooling according to an embodiment of the present invention is shown; Figure 4a A front schematic diagram of completing the outer contour shaping of a transmitting propulsion coil provided in an embodiment of the present invention is shown; Figure 4b A schematic diagram of the reverse side of the outer contour shaping of the transmitting propulsion coil provided in one embodiment of the present invention is shown; Figure 5 A schematic diagram of completing the internal shaping of a transmitting propulsion coil according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of completing thickness direction shaping of a launch propulsion coil according to an embodiment of the present invention is shown.

[0016] The above drawings include the following reference numerals: 1. Base plate; 2. Bearing seat; 3. Lead screw; 4. Moving slider; 5. Push block; 6. First movable block; 7. Second movable block; 8. Press plate; 9. Stop block; 10. Base; 11. Propulsion coil. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0020] like Figure 1 As shown, the present invention provides a launch propulsion coil forming tooling, wherein the propulsion coil has a dislocation structure in the thickness direction, and the tooling comprises a base, a base plate, a plurality of movable sliders, a driving assembly, a first movable block, a second movable block, a stopper, a pusher block and a pressure plate; The substrate is arranged on the base, and the substrate has a staggered structure adapted to the propulsion coil, so that the upper surface of the substrate contacts the lower surface of the propulsion coil, and a plurality of guide holes are arranged on the substrate in a radial direction; specifically, the substrate is composed of two flat plates connected together, and the two flat plates are not on the same horizontal plane; Each of the movable sliders can be relatively slidably disposed in the corresponding guide hole, and is used to expand and shape the propulsion coil; The driving assembly is disposed on the lower side of the substrate and connected to the movable slider, and is used to drive each movable slider to slide relatively along the corresponding guide hole; The first movable block is arranged on the substrate and is located at the upper nose end of the propulsion coil, and is used to realize the positioning and fixing of the propulsion coil during expansion; wherein the upper nose end of the propulsion coil is an end of the propulsion coil that has no misalignment in the thickness direction and is far away from the lead-out wire; The second movable block is arranged on the substrate and at the lower nose end of the propulsion coil, and is used to control the coil size when the propulsion coil is being propulsion; wherein the lower nose end of the propulsion coil is an end of the propulsion coil that is not misaligned in the thickness direction and is close to the lead-out wire; the second movable block also facilitates the disassembly of the coil after shaping; The stopper is arranged on the substrate and envelops the outer side of the propulsion coil in the circumferential direction, and is used to shape the outer contour of the propulsion coil during the process in which the moving slider slides outward in the circumferential direction; After the outer contour of the propulsion coil is shaped, the push block is disposed between the propulsion coil and the moving slider, and is used to shape the inside of the propulsion coil during the process in which the moving slider slides outward in the circumferential direction; After completing the internal shaping of the propulsion coil, the pressing plate is covered on the upper part of the propulsion coil to achieve the shaping of the propulsion coil in the thickness direction.

[0021] The molding tool and molding method of the present invention can ensure the dimensional accuracy of complex coils, thereby ensuring the electromagnetic performance of the coils. The present invention can be applied to propulsion coils with relatively complex shapes for aerospace electromagnetic launch.

[0022] According to one embodiment of the present invention, the driving assembly includes a plurality of bearing seats and a plurality of lead screws, wherein the bearing seats are mounted on the lower surface of the base plate and are used for the installation and rotation of the lead screws; a bearing seat is mounted on each end of each lead screw, and each lead screw is connected to the corresponding movable slider to drive the movable slider to slide relatively along the corresponding guide hole.

[0023] According to an embodiment of the present invention, the pressing plate is connected to the base plate by bolts.

[0024] For magnetic levitation propulsion coils, usually a single-filament enameled wire with self-adhesive insulating paint is used for winding, and then the wound propulsion coil is sent to an oven for heating and shaping. For this complex coil, the coil has a polygonal structure and there is a spatial dislocation in the thickness direction, so it is almost impossible to wind it in one go and shape it in the above manner. The shaping method used for the coil is consistent with the above, and this patent focuses on describing the shape of the coil.

[0025] like Figure 2-Figure 5 As shown, the present invention also provides a method for forming a launch propulsion coil, wherein the method uses any of the above-mentioned tooling to form a propulsion coil, and the method comprises: The middle position of the runway-shaped propulsion coil wound into a long strip is along the propulsion direction ( Figure 2 In the x direction), the thickness direction ( Figure 2 There are propulsion coils with misaligned structures in the z direction, such as Figure 2 As shown; After the first movable block is inserted into the upper nose end of the propulsion coil and the second movable block is inserted into the lower nose end of the propulsion coil, the first movable block is fixed to one end of the substrate offset structure and the upper nose end of the propulsion coil is fixed, and the second movable block is fixed to the other end of the substrate offset structure, and the lower nose end of the propulsion coil and the second movable block can slide relative to each other, as shown in FIG. Figure 3 As shown; wherein, the first movable block and the second movable block can be fixed on the base plate by bolts; The driving assembly drives each movable slider to slide radially outward until the outer side of the propulsion coil gradually contacts the stopper, so as to realize the expansion and outer contour shaping of the propulsion coil, as shown in FIG4 ; After the outer contour of the propulsion coil is shaped, the driving assembly drives each movable slider to slide radially inward and places the push block between the propulsion coil and the movable slider; The driving assembly continues to drive each movable slider to slide radially outward until the push block gradually contacts the inner side of the propulsion coil to achieve internal shaping of the propulsion coil, such as Figure 5 As shown; After the internal shaping of the propulsion coil is completed, the pressing plate is pressed against the propulsion coil and fixedly connected to the base plate to complete the thickness shaping of the propulsion coil. Figure 6 As shown, the propulsion coil forming is now completed.

[0026] According to an embodiment of the present invention, the propulsion coil's central portion is expanded to a distance of no less than 300 mm to facilitate installation of the coil on a molding tool.

[0027] According to an embodiment of the present invention, the method further comprises: placing the completed propulsion coil and the forming tooling into an oven for heat curing, so that the turns of the propulsion coil are bonded together into a whole, so as to complete the shaping of the propulsion coil. The coil can be removed from the tooling by removing the pressing plate, the push block, and the movable block in sequence to obtain the completed propulsion coil.

[0028] The present invention firstly winds the coil into a long runway-shaped coil along the thickness offset direction, then expands and shapes the coil through the tooling of the present invention, and finally puts the coil into an oven for shaping, thereby obtaining a propulsion coil with a relatively complex shape suitable for aerospace electromagnetic launch.

[0029] Parts of the present invention that are not described in detail are well known to those skilled in the art.

[0030] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0031] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0032] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A launch propulsion coil forming tool, characterized in that: The propulsion coil has a dislocation structure in the thickness direction, and the tooling includes a base, a base plate, a plurality of movable sliders, a driving assembly, a first movable block, a second movable block, a stopper, a push block and a pressure plate; The substrate is arranged on the base, and the substrate has a staggered structure adapted to the propulsion coil, so that the upper surface of the substrate contacts the lower surface of the propulsion coil, and a plurality of guide holes are arranged in the radial direction on the substrate; Each of the movable sliders can be relatively slidably disposed in the corresponding guide hole, and is used to expand and shape the propulsion coil; The driving assembly is disposed on the lower side of the substrate and connected to the movable slider, and is used to drive each movable slider to slide relatively along the corresponding guide hole; The first movable block is arranged on the base plate and is located at the upper nose end of the propulsion coil, and is used to realize the positioning and fixing of the propulsion coil during expansion; The second movable block is arranged on the base plate and is located at the lower nose end of the propulsion coil, and is used to control the coil size when the propulsion coil is moved; The stopper is arranged on the substrate and envelops the outer side of the propulsion coil in the circumferential direction, and is used to shape the outer contour of the propulsion coil during the process in which the moving slider slides outward in the circumferential direction; After the outer contour of the propulsion coil is shaped, the push block is disposed between the propulsion coil and the moving slider, and is used to shape the inside of the propulsion coil during the process in which the moving slider slides outward in the circumferential direction; After completing the internal shaping of the propulsion coil, the pressing plate is covered on the upper part of the propulsion coil to achieve the shaping of the propulsion coil in the thickness direction.

2. The tooling according to claim 1, characterized in that: The driving assembly shown includes a plurality of bearing seats and a plurality of lead screws. The bearing seats are mounted on the lower surface of the base plate and are used for the installation and rotation of the lead screws. A bearing seat is mounted on each end of each lead screw. Each lead screw is connected to a corresponding movable slider to drive the movable slider to slide relatively along the corresponding guide hole.

3. The tooling according to claims 1 and 2, characterized in that: The pressing plate is connected to the base plate through bolts.

4. A method for forming a launch propulsion coil, characterized in that: The method adopts the tooling according to any one of claims 1 to 3 to carry out coil forming, and the method comprises: The middle part of the runway-shaped propulsion coil wound into a long strip is expanded along the propulsion direction; After the first movable block is inserted into the upper nose end of the propulsion coil and the second movable block is inserted into the lower nose end of the propulsion coil, the first movable block is fixed to one end of the base plate dislocation structure and the upper nose end of the propulsion coil is fixed, and the second movable block is fixed to the other end of the base plate dislocation structure, and the lower nose end of the propulsion coil and the second movable block can slide relative to each other; The driving assembly drives each movable slide block to slide radially outward until the outer side of the propulsion coil gradually contacts the stopper, so as to realize the expansion and outer contour shaping of the propulsion coil; After the outer contour of the propulsion coil is shaped, the driving assembly drives each movable slider to slide radially inward and places the push block between the propulsion coil and the movable slider; The driving assembly continues to drive each movable slider to slide radially outward until the push block gradually contacts the inner side of the propulsion coil, so as to achieve internal shaping of the propulsion coil; After the internal shaping of the propulsion coil is completed, the pressing plate is pressed against the propulsion coil and fixedly connected to the base plate to complete the shaping of the propulsion coil in the thickness direction.

5. The method according to claim 4, characterized in that The expansion distance of the middle part of the propulsion coil shall not be less than 300mm.

6. The method according to claim 4, characterized in that The method further comprises: placing the formed propulsion coil together with the forming tool into an oven for thermal curing, so that the turns of the propulsion coil are bonded together into a whole, thereby completing the shaping of the propulsion coil.

7. The method according to claim 4, characterized in that The propulsion coil is formed by winding a monofilament enameled wire with insulating varnish which is self-adhesive.

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