Insulation paper expanding device

Abstract

The utility model discloses an insulation paper expanding device which comprises a driving device and a paper expanding plate, the driving device can drive the paper expanding plate to enter and exit from an iron core groove along the radial direction of an iron core, and when the paper expanding plate is located in the iron core groove, the paper expanding plate expands insulation paper in the iron core groove of the iron core, so that the insulation paper is attached to the groove wall of the iron core groove. According to the utility model, the driving device drives the paper expanding plate to enter the iron core groove, and the side walls on the two sides of the paper expanding plate have the force for expanding the insulation paper towards the side walls of the iron core groove, so that the insulation paper can be attached to the side walls of the iron core groove, the effective width of the notch of the iron core groove is improved, and the wire embedding difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the processing and manufacturing field of core winding, especially relates to an insulating paper expanding device. BACKGROUND

[0002] After embedding the coil into the core, the core winding is formed. The part of the coil located in the core slot is provided with insulating paper between the slot wall of the core slot to ensure the insulation between the coil and the core. In the actual processing and manufacturing process, the insulating paper is first inserted into the core slot, and then the coil is embedded into the slot cavity surrounded by the insulating paper. However, since the insulating paper has a certain elasticity, the insulating paper cannot be completely attached to the side wall of the core slot, which will affect the effective width of the core slot opening and increase the difficulty of embedding the coil.

[0003] Therefore, how to set up a device that can make the insulating paper tightly attached to the side wall of the core slot, thereby increasing the effective width of the core slot opening and reducing the difficulty of embedding the coil, is a key problem that needs to be solved by the technical personnel in the field. SUMMARY

[0004] Therefore, the utility model aims at setting up a device that can make the insulating paper tightly attached to the side wall of the core slot, thereby increasing the effective width of the core slot opening and reducing the difficulty of embedding the coil.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An insulating paper expanding device, comprising a driving device and an expanding board, the driving device is used to drive the expanding board to move along the radial direction of the core, the expanding board is matched with the shape of the core slot of the core, and is used to expand the insulating paper in the core slot so that the insulating paper is attached to the slot wall of the core slot.

[0007] Preferably, in the above-mentioned insulating paper expanding device, the expanding board comprises a head, a main body and a tail along the radial direction of the core in turn, the tail is connected with the driving device, the thickness of the head gradually increases from one end of the head away from the main body to one end of the head close to the main body, the main body is matched with the shape of the core slot, and the thickness of the head is the size of the head along the circumferential direction of the core.

[0008] Preferably, in the above-mentioned insulating paper expanding device, the main body is a solid plate structure.

[0009] Preferably, in the above-mentioned insulating paper expanding device, the main body comprises two expanding sheets, and the tail comprises two tail sheets, one end of the two expanding sheets is connected with the head, and the other end of the two expanding sheets is connected with the two tail sheets respectively.

[0010] Preferably, in the insulation paper expanding device, each of the iron core slots has at least two of the expanding boards, and two adjacent expanding boards are connected by a spring.

[0011] Preferably, in the insulation paper expanding device, a guiding assembly is further included for guiding the movement of the expanding boards.

[0012] The guiding assembly includes guiding blocks and a guiding rail, the guiding blocks are slidably fitted on the guiding rail, the guiding rail extends along the radial direction of the iron core, and the driving device is connected with the expanding boards through the guiding blocks.

[0013] Preferably, in the insulation paper expanding device, the guiding blocks are connected with the expanding boards by clamping.

[0014] The guiding block includes a bottom plate, a positioning plate and a base, the bottom plate is slidably arranged on the guiding rail, the positioning plate is arranged on the bottom plate and arranged along a direction perpendicular to the guiding rail, the tail of the expanding board has a positioning slot with an opening downward, opposite slot side walls of the positioning slot are arranged along the extension direction of the guiding rail and are separately arranged on two sides of the positioning plate, and a gap is formed between the opposite slot side walls of the positioning slot and the positioning plate, and the base is arranged on the bottom plate.

[0015] A pressing plate is further included and connected with the guiding block for pressing the expanding board on the guiding block.

[0016] Preferably, in the insulation paper expanding device, positioning pins are arranged on both sides of the guiding block in the plane of the expanding board for limiting the swing of the expanding board along a direction perpendicular to the plane of the expanding board, so that the expanding board can be automatically aligned.

[0017] Preferably, in the insulation paper expanding device, the tail of the expanding board has a stepped surface matched with the pressing plate.

[0018] Preferably, in the insulation paper expanding device, the guiding block further includes a clamping plate, the clamping plate is arranged on the bottom plate away from the expanding board, the clamping plate is arranged along a direction perpendicular to the guiding rail, the clamping plate has a clamping hole, and a driving part of the driving device penetrates through the clamping hole.

[0019] A convex column is arranged on the surface of the base facing the clamping plate, a locking nut is threadedly screwed on the convex column, the locking nut is simultaneously screwed on the driving part and abuts on the hole wall of the clamping hole.

[0020] Preferably, the insulation paper expanding device further comprises a support base and a platform, the support base is arranged on the platform, the driving device is fixed on the support base, the support base is annularly distributed, each support base is fixed with one driving device, each driving device is connected with one expanding board, and the platform is further provided with a positioning pin for positioning an iron core.

[0021] From the above technical solution can be seen: in the utility model, the driving device drives the expanding board into the iron core groove, the expanding board can support the insulation paper to the direction of the groove wall of the iron core groove, so that the insulation paper is close to the groove wall of the iron core groove of the iron core, so that the effective width of the iron core groove opening is improved, and the difficulty of embedding wire is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following briefly introduces the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0023] Figure 1 The structural diagram of the insulation paper expanding device disclosed in the embodiment of the utility model is shown in the drawings;

[0024] Figure 2 The structural diagram of the insulation paper expanding device disclosed in the embodiment of the utility model is shown in the drawings;

[0025] Figure 3 The structural diagram of the insulation paper expanding device disclosed in the embodiment of the utility model is shown in the drawings;

[0026] Figure 4 The structural diagram of the expanding board disclosed in the embodiment of the utility model is shown in the drawings;

[0027] Figure 5 The structural diagram of the expanding board disclosed in the embodiment of the utility model is shown in the drawings;

[0028] Figure 6 The structural diagram of the expanding board disclosed in the embodiment of the utility model is shown in the drawings.

[0029] Wherein, the names of various components are as follows:

[0030] 1-expansion board, 11-head, 12-body, 121-expansion sheet, 122-spring, 13-tail, 131-positioning groove, 132-step surface, 2-guide block, 21-bottom plate, 22-positioning plate, 23-pressing plate, 24-base, 25-clamping plate, 26-locking nut, 3-guide rail, 4-driving device, 5-insulating paper, 6-inner blocking ring, 7-supporting seat. DETAILED DESCRIPTION

[0031] Therefore, the core of the utility model lies in setting an insulating paper expansion device, which can make the insulating paper closely adhere to the side wall of the core groove, thereby improving the effective width of the core groove opening and reducing the difficulty of embedding the wire.

[0032] In order to make the personnel in the technical field better understand the utility model scheme, the utility model is further described in detail below in combination with the drawings and specific embodiments.

[0033] Please refer to the accompanying Figure 1 and the accompanying Figure 2 The utility model discloses an insulating paper expansion device, which comprises a driving device 4 and an expansion board 1, the driving device 4 is used for driving the expansion board 1 to move along the radial direction of the core, so as to drive the expansion board 1 to enter and exit the core groove of the core, the shape of the expansion board 1 is adapted to the shape of the core groove of the core, and the expansion board 1 is used for supporting the insulating paper in the core groove apart, so that the insulating paper is attached to the groove wall of the core groove, specifically, the driving device 4 drives the expansion board 1 to enter the core groove, and the expansion board 1 supports the insulating paper in the core groove apart along the two opposite side walls in the circumferential direction of the core, so that the insulating paper moves towards the two side walls of the core groove, and the insulating paper 5 on the corresponding side can be attached to the side wall of the core groove, and after completion, the driving device 4 drives the expansion board 1 to exit the core groove.

[0034] In the utility model, the driving device 4 drives the expansion board 1 to enter the core groove, and the expansion board 1 supports the insulating paper apart, so that the insulating paper 5 is attached to the side wall of the core groove, thereby improving the effective width of the core groove opening and reducing the difficulty of embedding the wire.

[0035] In the radial direction of the iron core, the expansion plate 1 sequentially includes a head 11, a main body 12, and a tail 13. The head 11 of the expansion plate 1 is pointed, that is, along the direction from the tail 13 to the head 11, or along the direction of entering the iron core slot, the thickness of the head 11 gradually decreases. The thickness of the head 11 is the circumferential dimension of the head 11 along the iron core, reducing the difficulty of the head 11 entering the iron core slot. The main body 12 is adapted to the shape of the iron core slot, and the sidewall of the main body 12 is tightly fitted with the sidewall of the iron core slot. The tail 13 is connected to the driving device 4. Since the head 11 of the expansion plate 1 is pointed, the head 11 of the expansion plate 1 can easily enter the iron core slot. Then the main body 12 of the expansion plate 1 enters the iron core slot. Since the main body 12 of the expansion plate 1 and the iron core slot are tightly fitted, the insulating paper in contact with the side walls of the expansion plate 1 has a tendency to extend towards the sidewall of the iron core slot, thereby attaching the insulating paper 5 to the sidewall of the iron core slot.

[0036] There are various forms of sheet metal, such as Figure 4 As shown, the main body 12 and tail 13 of the spreading board 1 are solid board structures;

[0037] like Figure 5 As shown, the main body 12 of the paper spreading board 1 includes two paper spreading pieces 121, and the tail 13 includes two tail pieces. One end of the two paper spreading pieces 121 is connected to the head 11, and the two paper spreading pieces 121 are respectively connected to the two tail pieces. Except for the head 11, the main body 12 and the tail 13 of the paper spreading board 1 have a hollow structure.

[0038] The heads 11 of the two paper spreading pieces 121 of the paper spreading board 1 are connected to each other. When the paper spreading board 1 enters the iron core groove, the two paper spreading pieces 121 will be squeezed and brought closer to each other by the action of the two side walls of the iron core groove. At the same time, the two paper spreading pieces 121 will stick the insulating paper 5 on both sides to the side walls of the iron core groove.

[0039] The expanding board 1 is not limited to the above embodiments, but can also be in other forms, which are not specifically limited here.

[0040] Each core slot contains at least one expansion board.

[0041] In embodiments where at least two expansion plates 1 are present within a single core slot, such as Figure 6 As shown, two adjacent expansion plates 1 are connected by a spring. Since the shape of a single expansion plate 1 is the same as the shape of the iron core groove, the overall shape of at least two expansion plates 1 combined is adapted to the shape of the iron core groove.

[0042] A spring 122 is provided between the two expansion plates 1. When the expansion plates 1 enter the iron core slot, the two expansion plates 1 will squeeze the spring 122 and move closer to each other. At the same time, the two expansion plates 1 will also stick the insulating paper 5 on both sides to the side wall of the iron core slot under the action of the spring.

[0043] The material of the paper expansion board 1 can be flexible material, such as rubber.

[0044] The insulation paper expansion device further comprises a guide assembly for guiding the movement of the paper expansion board 1.

[0045] The guide block 2 comprises a bottom plate 21, a positioning plate 22, a base 24 and a pressing plate 23.

[0046] The base 24 is arranged on the bottom plate 21, and the pressing plate 23 is arranged on the base 24.

[0047] The insulation paper expansion device further comprises a guide assembly for guiding the movement of the paper expansion board 1.

[0048] The tail part 13 of the paper expander 1 is concave downward relative to the main part 12 of the paper expander 1 to form a step surface 132. The step surface 132 is opposite to the groove bottom of the positioning groove 131 in the up-down direction. The other side of the pressing plate 23 is pressed on the step surface 132, so that the groove bottom of the positioning groove 131 is abutted on the positioning plate 22. The setting of the step surface 132 shortens the distance between the pressing plate 23 and the groove bottom of the positioning groove 131, and improves the stability of the paper expander 1. On the other hand, the end surface of the main part 12 connected with the step surface 132 forms a positioning to the pressing plate 23, so as to further improve the stability of the paper expander 1.

[0049] In addition to the bottom plate 21, the base 24, the positioning plate 22 and the pressing plate 23, the guide block 2 further comprises a clamping plate 25. Optionally, the bottom plate 21, the base 24, the positioning plate 22 and the clamping plate 25 are integrated. The clamping plate 25 is arranged on the bottom plate 21 and is away from the paper expander 1. The clamping plate 25 is arranged along the direction perpendicular to the guide rail 3. The clamping plate 25 has a clamping hole, and the driving part of the driving device 4 is locked in the clamping hole.

[0050] The base 24 is located between the positioning plate 22 and the clamping plate 25. The side of the base 24 facing the clamping plate 25 is provided with a locking nut 26. The locking nut 26 is locked and connected with the driving part of the driving device 4, and is abutted on the hole side of the clamping hole. In this way, the detachable connection between the driving part and the guide block 2 is realized.

[0051] In some embodiments, the driving device 4 is a telescopic cylinder, and correspondingly, the driving part is a telescopic rod of the telescopic cylinder.

[0052] In some embodiments, the driving device 4 is a gear and rack assembly, and correspondingly, the driving part is a rack.

[0053] In some embodiments, the driving device 4 is a lead screw assembly, and correspondingly, the driving part is a nut.

[0054] The driving device is not limited to the above embodiments, and can also be in other forms, which are not limited here.

[0055] The core slot has an outer ring side slot and an inner ring side slot in the radial direction of the core. The insulation paper expander is located at the outer ring side of the core, and the paper expander 1 enters and exits the core slot through the outer ring side slot. An inner blocking ring 6 is fitted on the inner ring of the core. The inner blocking ring 6 blocks the inner ring side slot. In this way, after the paper expander 1 enters the core slot, the inner blocking ring 6 blocks the insulation paper 5 in the core slot, preventing the insulation paper 5 from escaping from the inner ring side slot.

[0056] Please refer to the attached drawings Figure 3The insulating paper expanding device further comprises a supporting seat 7 and a platform.

[0057] In the description of the utility model, it needs to explain, the orientation or position relation that the term "upper", "lower", "bottom", "horizontal" etc indicate is based on the orientation or position relation shown in the drawing, only for the convenience of describing this application and simplifying the description, and does not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the limitation of this application.

[0058] In addition, if the terms "horizontal", "vertical", "perpendicular" and other terms appear, it does not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined.

[0059] In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An insulation paper spreading device characterized by comprising: The paper expander (1) is adapted to the shape of the core slot of the core, and is used to prop open the insulation paper in the core slot, so that the insulation paper is attached to the slot wall of the core slot.

2. The insulation paper spreading device according to claim 1, wherein The paper expander (1) comprises a head portion (11), a main body portion (12) and a tail portion (13) in sequence along the radial direction of the core, the tail portion (13) is connected with the driving device (4), the thickness of the head portion (11) gradually increases from one end of the head portion (11) away from the main body portion (12) to the other end close to the main body portion (12), the main body portion (12) is adapted to the shape of the core slot, and the thickness of the head portion (11) is the size of the head portion (11) along the circumferential direction of the core.

3. The insulation paper spreading device according to claim 2, wherein The main body portion (12) is a solid plate structure.

4. The insulation paper spreading device according to claim 2, wherein The main body portion (12) comprises two paper expander sheets (121), and the tail portion (13) comprises two tail sheets, one end of each of the two paper expander sheets (121) is connected with the head portion (11), and the other end of each of the two paper expander sheets (121) is connected with one of the two tail sheets.

5. The paper spreading device according to any one of claims 2 to 4, wherein Each core slot has at least two paper expanders (1), and two adjacent paper expanders (1) are connected by a spring (122).

6. The insulation paper spreading device according to claim 1, wherein Further comprising a guide assembly for guiding the movement of the paper expander (1), The guide assembly comprises a guide block (2) and a guide rail (3), the guide block (2) is slidably fitted on the guide rail (3), the guide rail (3) extends along the radial direction of the core, and the driving device (4) is connected with the paper expander (1) through the guide block (2).

7. The insulation paper spreading device according to claim 6, wherein The guide block (2) is connected with the paper expander (1) through clamping, The guide block (2) comprises a bottom plate (21), a positioning plate (22) and a base (24), the bottom plate (21) is slidably arranged on the guide rail (3), the positioning plate (22) is arranged on the bottom plate (21), and the positioning plate (22) is arranged along a direction perpendicular to the guide rail (3), the tail portion of the paper expander (1) has a positioning groove (131) with an opening downward, opposite groove side walls of the positioning groove (131) are arranged along the extension direction of the guide rail (3) and are separately arranged on both sides of the positioning plate (22), and a gap is formed between the opposite groove side walls of the positioning groove (131) and the positioning plate (22), and the base (24) is arranged on the bottom plate (21). Further comprising a pressing plate (23) connected with the guide block (2) and used for pressing the paper expander (1) on the guide block (2).

8. The insulation paper spreading device according to claim 7, wherein The guide block (2) is provided with a positioning pin on both sides of the plane where the paper expander (1) is located, which is used for limiting the swing of the paper expander (1) along a direction perpendicular to the plane where the paper expander (1) is located, so that the paper expander (1) can be automatically aligned.

9. The sheeting device according to claim 7, wherein The tail portion (13) of the paper expander (1) has a stepped surface (132) matched with the pressing plate (23).

10. The sheeting device according to claim 7, wherein The guide block (2) further comprises a clamping plate (25) arranged on the bottom plate (21) away from the side of the paper expander (1), the clamping plate (25) is arranged along the direction perpendicular to the guide rail (3), the clamping plate (25) is provided with a clamping hole, and the driving part of the driving device (4) penetrates through the clamping hole; The surface of the base (24) facing the clamping plate (25) is provided with a convex column, the convex column is screwed with a locking nut (26), the locking nut (26) is screwed on the driving part at the same time, and abuts on the hole along of the clamping hole.

11. The insulation paper spreading device according to claim 1, wherein Further comprising a support seat (7) and a platform, the support seat (7) is arranged on the platform, the driving device (4) is fixed on the support seat (7), the support seat (7) is a plurality of annularly distributed, each of the support seat (7) is fixed with one of the driving device (4), each of the driving device (4) is connected with one of the paper expander (1), the platform is further provided with a positioning pin for positioning an iron core, and the iron core is provided with a pin hole matched with the positioning pin.

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