A resin coil pouring mold and a pouring anti-displacement device

Abstract

The application relates to the technical field of resin pouring coils, and provides a resin coil pouring mold and a pouring anti-displacement device, wherein the pouring anti-displacement device comprises a pressing part and a clamping part; the pressing part is used for pressing a coil placed in the pouring mold; the clamping part is used for fixing the pressing part on the pouring mold; the pouring mold comprises an outer mold and an inner mold; the pressing part comprises a fan-shaped pressing plate and a clamping strip; and the lower end of the clamping strip is connected to the upper end of the fan-shaped pressing plate. When pouring is carried out, the coil needs to be placed in a pouring cavity between the outer mold and the inner mold, then the pressing part is placed, so that the lower end of the fan-shaped pressing plate contacts the upper end of the coil, and finally the clamping strip is fixed on the pouring mold through the clamping part, so that the axial position of the coil is limited, the problem that the wire segment of the coil is floated and displaced due to low adhesion and resin impact when pouring from bottom to top is avoided, and the pouring quality of the coil is ensured.

Description

Technical Field

[0001] This utility model relates to the field of resin casting coil technology, and in particular to a resin coil casting mold and a casting anti-displacement device. Background Technology

[0002] Resin-cast coils are coils molded from materials such as epoxy resin. They are widely used in transformers and require molds for molding during the manufacturing process.

[0003] To ensure the resin's wettability on the insulation, the resin can be injected from the bottom of the mold during the casting process. Due to the fluidity of the casting material, it will impact the coil segments. When the casting impact force is greater than the friction force of the segments, the segments will float and shift upwards, thereby compressing the insulation space, making the coil unable to meet the requirements, and ultimately causing the coil to be scrapped.

[0004] Therefore, how to improve the casting quality of resin casting coils is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a resin coil casting mold and a casting anti-displacement device, which can effectively improve the casting quality of the coil.

[0006] To achieve the above objectives, this utility model provides the following technical solution: In a first aspect, this utility model provides a casting anti-displacement device for limiting the position of a coil inside a casting mold, the casting mold including an outer mold and an inner mold; the casting anti-displacement device includes: a pressing member and a clamping member, the pressing member including a fan-shaped pressure plate and a clamping bar, the lower end of the clamping bar being connected to the upper end of the fan-shaped pressure plate, the lower end of the fan-shaped pressure plate being used to contact the upper end of the coil, and the clamping member being used to fix the clamping bar on the casting mold.

[0007] In some embodiments, the clamping member includes a C-shaped clamping body and a screw. The C-shaped clamping body includes a first clamping end and a second clamping end. The first clamping end and the clamping bar are both located between the inner mold and the outer mold of the casting mold, and the first clamping end is located between the clamping bar and the inner mold. The second clamping end is located outside the outer mold, and the screw passes through the second clamping end so that when tightened in the direction toward the outer mold, the clamping bar is pressed against the inner side of the outer mold by the first clamping end.

[0008] In some embodiments, the first clamping end has a protrusion on the side facing the screw, and the clamping bar has a groove on the side facing the inner mold that engages with the protrusion.

[0009] In some embodiments, the clamping bar is provided with a plurality of the grooves, the grooves being distributed along the length extension direction of the clamping bar, and the protrusion selectively engaging with one of the grooves.

[0010] In some embodiments, the protrusion is a tapered protrusion, and the groove is a chamfered hole.

[0011] In some embodiments, the plurality of grooves are distributed along the length direction of the clamping bar.

[0012] Secondly, this utility model provides a resin coil casting mold, including the casting anti-displacement device described in any of the above claims, and further including an outer mold and an inner mold, wherein a casting chamber is provided between the outer mold and the inner mold, and a coil is disposed in the casting chamber.

[0013] In some embodiments, the resin coil casting mold further includes a chassis and a clamping assembly, wherein the outer mold and the inner mold are placed on the chassis, and the clamping assembly is used to clamp the outer mold and / or the inner mold onto the chassis.

[0014] In some embodiments, the clamping assembly includes a screw and a cross clamp, the screw being located inside the inner mold and the lower end of the screw being connected to the chassis, the middle portion of the cross clamp being connected to the screw, and the cross clamp being used to clamp the outer mold and / or the inner mold onto the chassis.

[0015] In some embodiments, the upper end of the outer mold is provided with a plurality of casting anti-displacement devices evenly distributed along the circumferential direction.

[0016] Compared with existing technologies, the above technical solution has the following advantages: This utility model provides a resin coil casting mold and a casting anti-displacement device. The casting anti-displacement device includes a clamping component and a clamping component. The clamping component clamps the coil placed inside the casting mold, and the clamping component fixes the clamping component to the casting mold. The clamping component includes a fan-shaped pressure plate and a clamping bar, with the lower end of the clamping bar connected to the upper end of the fan-shaped pressure plate. During clamping, the clamping component is placed between the outer mold and the inner mold, with the lower end of the fan-shaped pressure plate contacting the upper end of the coil. Then, the clamping component fixes the clamping bar to the casting mold, thus achieving axial positioning of the coil. This prevents the coil segment from floating and displacing due to low adhesion and resin impact during bottom-to-top casting, thereby ensuring the casting quality of the coil. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 A three-dimensional structural schematic diagram of a resin coil casting mold provided for a specific embodiment of this utility model; Figure 2 This is a three-dimensional structural diagram of a resin coil casting mold after removing the outer mold, provided in a specific embodiment of the present invention. Figure 3 A three-dimensional structural diagram of a casting anti-displacement device provided for a specific embodiment of this utility model; Figure 4 A three-dimensional structural diagram of the clamping component of a casting anti-displacement device provided in a specific embodiment of this utility model; Figure 5 A side view of the clamping component of a casting anti-displacement device provided in a specific embodiment of this utility model; Figure 6 This is a three-dimensional structural diagram of the clamping component of a casting anti-displacement device provided in a specific embodiment of the present invention.

[0019] The attached figures are labeled as follows: 100-Pouring anti-displacement device, 110-Clamping component, 111-Fan-shaped pressure plate, 112-Clamping strip, 1121-Groove, 120-Clamping component, 121-C-type clamp body, 1211-First clamping end, 12111-Protrusion, 1212-Second clamping end, 122-Screw; 200-Resin coil casting mold, 210-Outer mold, 220-Inner mold, 230-Base platen, 240-Clamping assembly, 241-Screw, 242-Cross clamping frame; 300-coil. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 6.

[0022] The present invention provides a casting anti-displacement device 100, comprising: a pressing member 110 and a clamping member 120. The pressing member 110 presses the coil 300 placed inside the casting mold, and the clamping member 120 fixes the pressing member 110 to the casting mold. The casting mold includes an outer mold 210 and an inner mold 220, wherein... Figures 3-5 As shown, the clamping component 110 includes a sector-shaped pressure plate 111 and a clamping strip 112. The lower end of the clamping strip 112 is connected to the upper end of the sector-shaped pressure plate 111. For example, the clamping strip 112 and the sector-shaped pressure plate 111 can be fixed by welding. The sector-shaped pressure plate 111 can adapt to the clamping operation of the coil 300 within a certain diameter range. It is only necessary to ensure that the sector-shaped pressure plate 111 is located within the inner and outer circles of the coil 300 in the top view projection, so as to reduce the cost of special tooling. During casting, the coil 300 needs to be placed in the casting cavity between the outer mold 210 and the inner mold 220. Then, the clamping member 110 is placed so that the lower end of the fan-shaped pressure plate 111 contacts the upper end of the coil 300. Finally, the clamping member 120 fixes the clamping strip 112 to the casting mold, which can achieve axial positioning of the coil 300. This prevents the coil 300 from floating and displacing due to low adhesion and resin impact when casting from bottom to top, thus ensuring the casting quality of the coil 300.

[0023] In some embodiments, such as Figure 6 As shown, the clamping component 120 includes a C-shaped clamping body 121 and a screw 122. The C-shaped clamping body 121 includes a first clamping end 1211 and a second clamping end 1212. During installation, the first clamping end 1211 and the clamping bar 112 are both located between the inner mold 220 and the outer mold 210 of the casting mold, and the first clamping end 1211 is located between the clamping bar 112 and the inner mold 220. The second clamping end 1212 is located outside the outer mold 210. The screw 122 passes through the second clamping end 1212. When the screw 122 is tightened in the direction toward the outer mold 210, the C-shaped clamping body 121 is moved outward, so that the first clamping end presses the clamping bar 112 against the inner side of the outer mold 210, thereby fixing the clamping bar 112 and thus fixing the fan-shaped pressure plate 111.

[0024] In some embodiments, such as Figure 6 As shown, the first clamping end 1211 has a protrusion 12111 on the side facing the screw 122, and the clamping bar 112 has a groove 1121 on the side facing the inner mold 220 that engages with the protrusion 12111. The engagement of the protrusion 12111 and the groove 1121 increases the clamping force, allowing the clamping bar 112 to be securely fixed to the outer mold 210.

[0025] In some embodiments, such as Figure 5 As shown, the clamping bar 112 is provided with multiple grooves 1121, which are distributed along the length of the clamping bar 112. Optionally, the multiple grooves 1121 extend evenly along the length of the clamping bar 112. During assembly, the protrusion 12111 selectively engages with one of the grooves 1121 to adjust the height of the fan-shaped pressure plate 111, thereby accommodating coils of different heights and effectively improving the adaptability to coils.

[0026] In some embodiments, the protrusion 12111 is a tapered protrusion, and the groove 1121 is a chamfered hole. The tapered protrusion and chamfered hole facilitate assembly. The tapered protrusion is coaxially arranged with the axis of the screw 122. During manufacturing, a tapered nail with a tapered head can be provided. The first clamping end 1211 has a through hole, the body of the tapered nail is disposed in the through hole, and the head of the tapered nail is located in the C-groove of the C-shaped clamp body 121. The tapered nail can be fixed to the first clamping end 1211 by welding, or the body of the tapered nail can be designed as a threaded structure, and the through hole can be designed as a threaded hole, so as to realize the detachable connection between the tapered nail and the first clamping end 1211, thereby facilitating the replacement of the tapered nail.

[0027] This utility model embodiment also provides a resin coil casting mold 200, such as Figure 1 and Figure 2 As shown, the resin coil casting mold 200 includes the casting anti-displacement device 100 provided in any of the above embodiments, and also includes an outer mold 210 and an inner mold 220. A casting chamber is provided between the outer mold 210 and the inner mold 220. Both the outer mold 210 and the inner mold 220 are cylindrical structures, and the annular space between them is the casting chamber. During casting, the coil 300 is placed in the casting chamber. The beneficial effects of the resin coil casting mold 200 can be referred to the casting anti-displacement device 100 provided in any of the above embodiments, and will not be repeated here.

[0028] In some embodiments, such as Figure 1 and Figure 2 As shown, the resin coil casting mold 200 also includes a base 230 and a clamping assembly 240. The outer mold 210 and the inner mold 220 are placed on the base 230. The clamping assembly 240 is used to clamp the outer mold 210 and / or the inner mold 220 onto the base 230. Specifically, when the lower end of the outer mold 210 is fixed on the base 230, the clamping assembly 240 can clamp only the inner mold 220 onto the base 230; when the lower end of the inner mold 220 is fixed on the base 230, the clamping assembly 240 can clamp only the outer mold 210 onto the base 230; when the lower ends of both the outer mold 210 and the inner mold 220 are not fixed on the base 230, the clamping assembly 240 can simultaneously fix both the outer mold 210 and the inner mold 220 onto the base 230.

[0029] In some embodiments, such as Figure 1 As shown, the clamping assembly 240 includes a screw 241 and a cross clamping frame 242. The screw 241 is located inside the inner mold 220, and the lower end of the screw 241 is connected to the base 230. The middle part of the cross clamping frame 242 is connected to the screw 241. The cross clamping frame 242 is located above the outer mold 210 and the inner mold 220. When clamping, the cross clamping frame 242 can press the outer mold 210 and / or the inner mold 220 onto the base 230, thereby ensuring the stability of the outer mold 210 and the inner mold 220. The cross clamping frame 242 can improve the uniformity of the clamping force.

[0030] It should be noted that the cross-shaped pressure frame 242 mentioned in the above embodiments is only a preferred structure. The cross-shaped pressure frame 242 includes four extension ends. In addition, pressure frame structures with three extension ends, five extension ends, or more extension ends can be selected, and the specific selection can be made according to actual needs.

[0031] In some embodiments, such as Figure 2 As shown, the upper end of the outer mold 210 is provided with multiple casting anti-displacement devices 100 evenly distributed along the circumferential direction. For example, two, three, four or more casting anti-displacement devices 100 can be set. The specific number can be selected according to actual needs. Multiple casting anti-displacement devices 100 can effectively improve the anti-displacement effect when the coil 300 is cast.

[0032] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0033] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0034] The above provides a detailed description of a resin coil casting mold and a casting anti-displacement device provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A casting anti-displacement device for limiting the position of a coil (300) inside a casting mold, the casting mold comprising an outer mold (210) and an inner mold (220); characterized in that, The anti-displacement device for casting includes a pressing member (110) and a clamping member (120). The pressing member (110) includes a fan-shaped pressure plate (111) and a clamping strip (112). The lower end of the clamping strip (112) is connected to the upper end of the fan-shaped pressure plate (111). The lower end of the fan-shaped pressure plate (111) is used to contact the upper end of the coil (300). The clamping member (120) is used to fix the clamping strip (112) on the casting mold.

2. The casting anti-displacement device according to claim 1, characterized in that, The clamping member (120) includes a C-shaped clamping body (121) and a screw (122). The C-shaped clamping body (121) includes a first clamping end (1211) and a second clamping end (1212). The first clamping end (1211) and the clamping bar (112) are both located between the inner mold (220) and the outer mold (210) of the casting mold, and the first clamping end (1211) is located between the clamping bar (112) and the inner mold (220). The second clamping end (1212) is located on the outside of the outer mold (210). The screw (122) passes through the second clamping end (1212) so that when tightened in the direction toward the outer mold (210), the clamping bar (112) is pressed against the inside of the outer mold (210) by the first clamping end (1211).

3. The casting anti-displacement device according to claim 2, characterized in that, The first clamping end (1211) has a protrusion (12111) on the side facing the screw (122), and the clamping bar (112) has a groove (1121) on the side facing the inner mold (220) that engages with the protrusion (12111).

4. The casting anti-displacement device according to claim 3, characterized in that, The clamping bar (112) is provided with a plurality of grooves (1121), the grooves (1121) are distributed along the length extension direction of the clamping bar (112), and the protrusion (12111) selectively engages with one of the grooves (1121).

5. A casting anti-displacement device according to claim 4, characterized in that, The protrusion (12111) is a conical protrusion, and the groove (1121) is a chamfered hole.

6. A casting anti-displacement device according to claim 4, characterized in that, The plurality of grooves (1121) are distributed along the length of the clamping bar (112).

7. A resin coil casting mold, characterized in that, The casting anti-displacement device according to any one of claims 1 to 6 further includes an outer mold (210) and an inner mold (220), wherein a casting chamber is provided between the outer mold (210) and the inner mold (220), and a coil (300) is provided in the casting chamber.

8. A resin coil casting mold according to claim 7, characterized in that, The resin coil casting mold also includes a chassis (230) and a clamping assembly (240), the outer mold (210) and the inner mold (220) are placed on the chassis (230), and the clamping assembly (240) is used to clamp the outer mold (210) and / or the inner mold (220) on the chassis (230).

9. A resin coil casting mold according to claim 8, characterized in that, The clamping assembly (240) includes a screw (241) and a cross clamp (242). The screw (241) is located inside the inner mold (220), and the lower end of the screw (241) is connected to the chassis (230). The middle part of the cross clamp (242) is connected to the screw (241). The cross clamp (242) is used to clamp the outer mold (210) and / or the inner mold (220) onto the chassis (230).

10. The resin coil casting mold according to claim 7, characterized in that, The upper end of the outer mold (210) is provided with a plurality of casting anti-displacement devices (100) evenly distributed along the circumferential direction.

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