O-shaped insulation paper edge covering mechanism and paper inserting machine

Abstract

The utility model relates to the technical field of motor processing, in particular to an O-shaped insulation paper edge covering mechanism and a paper inserting machine, and the O-shaped insulation paper edge covering mechanism comprises a first forming die holder, a second forming die holder and a third forming die holder, the forming cutter is used for pushing the insulating paper to be folded and pressed into U-shaped insulating paper comprising a short folded edge and a long folded edge in the forming groove; the second forming die holder is provided with a paper pushing groove, and an edge covering die cover is arranged on one side of the paper pushing groove; the edge covering die cover is provided with an edge folding separating part and an edge folding overlapping part, the edge folding separating part comprises a short edge folding groove and a long edge folding groove which are staggered and used for bending a short edge folding and a long edge folding respectively, the edge folding overlapping part comprises a transition block connected with the short edge folding groove and a transition groove located on one side of the transition block, and the transition groove is communicated with the long edge folding groove. The long folding edge of the U-shaped insulation paper wraps the short folding edge after the short folding edge is bent to form the O-shaped insulation paper, so that the phenomena that the wrapping edge is misplaced, the long folding edge and the short folding edge interfere with each other in the edge folding process, so that wrinkles are generated, and the insulation performance is influenced can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of motor processing technology, and in particular to an O-type insulating paper edge-wrapping mechanism and a paper insertion machine. Background Technology

[0002] Because the O-type insulating paper forming process is relatively complex, some manufacturers use manual folding of the O-type insulating paper to achieve edge wrapping before inserting the paper. This results in high labor costs and low production efficiency. To improve automation, some devices exist for automatic O-type insulating paper forming, but misalignment of the O-type insulating paper edge wrapping may still occur during the automatic edge wrapping process.

[0003] For example, the invention patent with patent number "CN202011421972.X" and titled "An Automatic Forming and Insertion Device for O-Slot Insulation Paper in a Flat Wire Motor" discloses an automatic forming and insertion device for O-slot insulation paper, which consists of a frame supporting a stator bracket mechanism, an indexing mechanism, a forming mechanism, a paper pushing mechanism, and a paper feeding mechanism. The paper feeding mechanism and the forming mechanism complete the O-slot forming of the insulation paper, while the stator bracket mechanism, the paper pushing mechanism, and the indexing mechanism complete the paper insertion function in each slot of the stator. The insulation paper forming process is as follows: The insulation paper first passes through the folding block of the paper feeding mechanism, so that the two sides of the insulation paper are folded at 90°. The paper feeding motor accurately feeds the insulation paper into the forming mechanism. The paper cutting cylinder drives the moving knife to cut the insulation paper. The forming cylinder drives the punch, and the punch presses the insulation paper into the forming mold through the guide channel formed by the left and right guide plates.

[0004] Because the insulating paper is directly extruded and formed during the stamping process, it is impossible to ensure that the long fold is on the outside and the short fold is on the inside when the insulating paper is formed into O-type insulating paper. There may be problems with misalignment of the edges, making it difficult to guarantee the closure of the O-type insulating paper's folds and whether there are wrinkles between the folds, thus affecting the insulation performance of the insulating paper. Utility Model Content

[0005] This utility model solves the problems in related technologies and proposes an O-type insulating paper edge wrapping mechanism and paper insertion machine, which can effectively ensure that the long folded edge of the O-type insulating paper is on the outside and the short folded edge is on the inside, realize the edge closure, avoid edge misalignment and interference between the long folded edge and the short folded edge during the folding process, thereby causing wrinkles and affecting the insulation performance.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: an O-type insulating paper edge-wrapping mechanism, comprising: a first forming mold base with a forming groove formed therein; a forming knife for pushing insulating paper into the forming groove and folding it into a U-shaped insulating paper including a short fold and a long fold; a second forming mold base with a paper pushing groove connected to the forming groove, and an edge-wrapping mold cover on one side of the paper pushing groove; the edge-wrapping mold cover is provided with an edge separation part and an edge overlapping part, the edge separation part is connected to the forming groove, the edge separation part includes staggered short fold grooves and long fold grooves, respectively used to bend the short fold and the long fold, the edge overlapping part includes a transition block connected to the short fold groove and a transition groove located on one side of the transition block, the transition groove is connected to the long fold groove, so that the long fold of the U-shaped insulating paper wraps around the short fold after the short fold is bent, forming an O-type insulating paper.

[0007] According to one embodiment of the present invention, the short folded edge groove is an oblique arc-shaped groove. The end of the oblique arc-shaped groove connected to the transition block is higher than the end of the oblique arc-shaped groove facing the forming groove. The lowest point of the bottom surface of the long folded edge groove is lower than the lowest point of the oblique arc-shaped groove. The inlet of the transition groove is connected to the long folded edge groove. The outlet of the transition groove is not higher than the contact surface between the transition block and the insulating paper.

[0008] According to one embodiment of the present invention, the forming groove includes a first paper feeding channel, a bending channel, and a paper pushing channel that are connected together. The first paper feeding channel is used to transmit insulating paper that enters from the outside. The width of the bending channel is smaller than the width of the first paper feeding channel. The paper pushing channel is connected to the paper pushing groove. The forming blade moves back and forth between the first paper feeding channel and the paper pushing channel.

[0009] According to one embodiment of the present invention, it further includes a paper cutter and a driving mechanism. The paper cutter is located at the entrance of the first paper feeding channel. The paper cutter and the forming blade are mounted on the same blade holder. The driving mechanism is used to drive the blade holder to drive the paper cutter and the forming blade to move back and forth synchronously.

[0010] According to one embodiment of the present invention, it further includes: a push rod, used to push the U-shaped insulating paper in the paper pushing channel into the paper pushing groove.

[0011] According to one embodiment of the present invention, the push rod includes a paper pusher head and support blocks located on both sides of the paper pusher head. The paper pusher channel includes a trapezoidal channel and a first groove communicating with the trapezoidal channel and adapted for the support blocks to pass through. The narrowest part of the trapezoidal channel is adapted for the paper pusher head to pass through, and the widest part of the trapezoidal channel communicates with the bending channel.

[0012] According to one embodiment of the present invention, the paper pusher groove includes a guide channel connected to the trapezoidal channel and a second groove communicating with the first groove.

[0013] According to one embodiment of the present invention, a paper feeding mechanism is further included, the paper feeding mechanism including a paper feeding cover plate and a paper feeding track, the paper feeding cover plate and the paper feeding track forming a second paper feeding channel suitable for the insulating paper to pass through, the second paper feeding channel corresponding to the forming groove, and the insulating paper output from the second paper feeding channel and entering the forming groove is biased towards one side of the long folding groove relative to the forming knife.

[0014] According to one embodiment of the present invention, the paper feed track is provided with two opposing pre-bending grooves at the entrance of the second paper feed channel, the paper feed cover plate is provided with a bending guide block, and a pre-bending space suitable for pre-bending the edge of the insulating paper is formed between the bending guide block and each of the pre-bending grooves. The paper feed mechanism is also provided with a paper pressing wheel on one side of the second paper feed channel, and the paper feed cover plate is provided with a through hole suitable for the rotation of the paper pressing wheel, so that the paper pressing wheel can bend and reinforce the pre-bent insulating paper.

[0015] In addition, to achieve the above objectives, this utility model also proposes a paper inserter.

[0016] A paper inserter includes an O-type insulating paper edge-wrapping mechanism as described above and a frame on which the O-type insulating paper edge-wrapping mechanism is mounted.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The O-type insulating paper edge-wrapping mechanism of this utility model pushes the insulating paper into a U-shaped insulating paper containing short and long folds within a forming groove by a forming blade. The edge-wrapping mold cover on one side of the paper-pushing groove is provided with an edge separation part and an edge overlapping part. This allows the short and long folds of the U-shaped insulating paper, formed in the forming groove, to bend to a certain extent within the interlaced short and long fold grooves as it passes through the edge-wrapping mold cover. Then, the short folds are bent through a transition block, and the long folds are bent through the transition groove and wrap around the already bent short folds. This effectively ensures that the long folds of the O-type insulating paper are on the outside and the short folds are on the inside, achieving edge closure and preventing edge misalignment and interference between the long and short folds during the folding process, which could cause wrinkles and affect insulation performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the O-type paper insulation paper edge-wrapping mechanism according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first molding die base according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the second molding die base according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the second molding mold base and the edge-sealing mold cover according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a sealing mold cover according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the overall structure of the O-type paper insulation paper edge-wrapping mechanism according to an embodiment of this utility model;

[0025] Figure 7 This is a schematic diagram of the push rod structure according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the paper feeding mechanism according to an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the paper feed cover and paper feed track according to an embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the bending guide block and paper feed track according to an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the bending guide block, paper pressing block, and paper feeding track according to another embodiment of the present invention;

[0030] Figure 12 This is a diagram illustrating the deformation process of the insulating paper within the O-type paper insulating paper edge-wrapping mechanism;

[0031] Figure 13 This is a schematic diagram of the paper inserter according to an embodiment of the present invention.

[0032] In the picture:

[0033] 1. First forming mold base; 11. Forming groove; 111. First paper feeding channel; 112. Bending channel; 113. Paper pushing channel; 113a. Trapezoidal channel; 113b. First groove; 2. Forming knife; 3. Second forming mold base; 31. Paper pushing groove; 311. Guide channel; 312. Second groove; 4. Edge wrapping mold cover; 41. Edge separation part; 411. Short edge folding groove; 412. Long edge folding groove; 42. Edge overlapping part; 421. Transition block; 422. Transition groove; 5. Paper cutter; 6. Drive mechanism; 7. Knife holder; 8. Push rod; 81. Paper pushing head; 82. Support block; 83. Third groove; 9. Paper feeding mechanism; 91. Paper feeding cover plate. 911. Through hole; 92. Paper feed track; 921. Pre-bending groove; 93. Paper feed roller; 94. Bending guide block; 95. Paper pressure roller; 96. Paper pressure block; 97. Fine adjustment mechanism; A. Insulating paper; B. U-shaped insulating paper; C. O-type insulating paper.

[0034] 10. O-type paper insulation paper edge wrapping mechanism; 20. Frame; 30. Stator support. Detailed Implementation

[0035] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0038] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0039] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0040] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0041] like Figures 1 to 5 As shown, an O-shaped insulating paper edge-wrapping mechanism includes a first forming mold base 1, a forming blade 2, a second forming mold base 3, and an edge-wrapping mold cover 4. The first forming mold base 1 has a forming groove 11 formed within it. The forming blade 2 can reciprocate between the forming groove 11 and the first forming mold base 1, pushing the insulating paper A within the forming groove 11 to be folded into a U-shaped insulating paper containing a short fold and a long fold. The second forming mold base 3 has a paper-pushing groove 31 connected to the forming groove 11, and an edge-wrapping mold cover 4 is provided on one side of the paper-pushing groove 31, so that the U-shaped insulating paper is further folded between the paper-pushing groove 31 and the edge-wrapping mold cover 4. The process involves bending and edge wrapping to form O-shaped insulating paper, which is then output. Specifically, the edge wrapping mold cover 4 is provided with an edge separation part 41 and an edge overlapping part 42. The edge separation part 41 includes staggered short edge grooves 411 and long edge grooves 412, which are used to bend the short and long edges of the U-shaped insulating paper, respectively. The edge overlapping part 42 includes a transition block 421 connected to the short edge groove 411 and a transition groove 422 located on one side of the transition block 421. The transition groove 422 is connected to the long edge groove 412 so that the long edge of the U-shaped insulating paper wraps around the short edge after the short edge is bent, forming O-shaped insulating paper.

[0042] It is understood that the O-type insulating paper edge-wrapping mechanism of this utility model embodiment, due to the edge-wrapping mold cover 4 on one side of the paper pusher groove 31 being provided with an edge separation part 41 and an edge overlapping part 42, allows the U-shaped insulating paper formed in the forming groove 11 to bend to a certain extent in the interlaced short edge groove 411 and long edge groove 412 when passing through the edge-wrapping mold cover 4. Then, the short edge is bent through the transition block 421, and the long edge is bent through the transition groove 422 and wraps around the already bent short edge. This can effectively ensure that the long edge of the O-type insulating paper is on the outside and the short edge is on the inside, achieving edge closure, avoiding edge misalignment and interference between the long edge and the short edge during the edge-wrapping process, which would cause wrinkles and affect the insulation performance.

[0043] Specifically, the short folding groove 411 can be an oblique arc-shaped groove, with the end of the oblique arc-shaped groove connected to the transition block 421 being higher than the end of the oblique arc-shaped groove facing the forming groove 11, so that the short fold of the U-shaped insulating paper can be smoothly bent; the lowest point of the bottom surface of the long folding groove 412 is lower than the lowest point of the oblique arc-shaped groove, the inlet of the transition groove 422 is connected to the long folding groove 412, and the outlet of the transition groove 422 is not higher than the contact surface between the transition block 421 and the insulating paper, to avoid the long folding edge being unable to smoothly wrap around the short folding edge. In some other embodiments of this utility model, the bottom surface of the short folding groove 411 can also be an oblique surface without curvature, and the bottom surface of the transition groove 422 can also be arc-shaped, etc., and this embodiment does not impose any limitations.

[0044] In one embodiment of this utility model, the forming groove 11 may include a first paper feeding channel 111, a bending channel 112, and a paper pushing channel 113 that are connected. The first paper feeding channel 111 is used to transmit insulating paper that enters from the outside. The width of the bending channel 112 is smaller than the width of the first paper feeding channel 111. The paper pushing channel 113 is connected to the paper pushing groove 31. The forming blade 2 moves back and forth between the first paper feeding channel 111 and the paper pushing channel 113 so that the forming blade 2 can push the insulating paper in the first paper feeding channel 111 to be folded into a U-shaped insulating paper in the bending channel 112 and enter the paper pushing channel 113.

[0045] In one embodiment of this utility model, the paper pushing channel 113 can extend relative to the bending channel 112 and the first paper feeding channel 111 towards the second forming mold base 3. The edge separation part 41 and the edge overlapping part 42 of the edge-binding mold cover 4 can be respectively disposed on the first mold cover and the second mold cover. The first mold cover can be located below the outlet of the paper pushing channel 113, and the second mold cover can be located below the paper pushing groove 31, so that the bending process of the insulating paper between the paper pushing channel 113 and the paper pushing groove 31 is smoother. In some other embodiments of this utility model, the edge-binding mold cover 4 can also be integrally formed, and the edge-binding mold cover 4 can also be completely located below the paper pushing groove 31, etc. This embodiment does not limit this.

[0046] like Figure 6 As shown, in one embodiment of this utility model, the O-shaped insulating paper edge-wrapping mechanism may further include a paper cutter 5 and a driving mechanism 6. The paper cutter 5 is located at the entrance of the first paper feeding channel 111. The paper cutter 5 and the forming blade 2 can be installed on the same blade holder 7. The driving mechanism 6 is used to drive the blade holder 7 to drive the paper cutter 5 and the forming blade 2 to move back and forth synchronously. After the insulating paper enters the first paper feeding channel 111, the driving mechanism 6 can drive the blade holder 7 to simultaneously drive the paper cutter 5 and the forming blade 2 to move towards the paper pushing channel 113. This simultaneously realizes the cutting and folding of the insulating paper into U-shaped insulating paper, resulting in high production efficiency and effective cost savings.

[0047] In one embodiment of this utility model, the O-type insulating paper edge-wrapping mechanism may further include a push rod 8, used to push the U-shaped insulating paper in the paper pushing channel 113 into the paper pushing groove 31. While the push rod 8 pushes the U-shaped insulating paper into the paper pushing groove 31, the U-shaped insulating paper can be bent and edge-wrapped at the folding separation part 41 and the folding overlap part 42 of the edge-wrapping mold cover 4. Therefore, when the U-shaped insulating paper is completely pushed into the paper pushing groove 31 by the push rod 8, the O-type insulating paper can be formed. The length of the push rod 8 is greater than the sum of the lengths of the forming groove 11 and the paper pushing groove 31, enabling the push rod 8 to push the O-type insulating paper into the motor stator slot. In some other embodiments of this utility model, other pushing mechanisms may be provided, or the O-type insulating paper may be manually moved below the motor stator slot for insertion; this embodiment does not impose any limitations on this.

[0048] Preferably, such as Figure 2 and Figure 7 As shown, the push rod 8 includes a paper pusher head 81 and support blocks 82 located on both sides of the paper pusher head 81. The paper pusher channel 113 includes a trapezoidal channel 113a and a first groove 113b that communicates with the trapezoidal channel 113a and is suitable for the support blocks 82 to pass through. The narrowest part of the trapezoidal channel 113a is suitable for the paper pusher head 81 to pass through, and the widest part of the trapezoidal channel 113a is partially or completely connected with the bending channel 112.

[0049] Since the push rod 8 includes a paper pusher head 81 and support blocks 82 located on both sides of the paper pusher head 81, and the paper pusher channel 113 includes a trapezoidal channel 113a, when the U-shaped insulating paper is fitted onto the paper pusher head 81, the short and long folds of the U-shaped insulating paper can be supported by the support blocks 82, thus avoiding the generation of large friction between the U-shaped insulating paper and the paper pusher channel 113 during the pushing process of the push rod 8, which would affect the flatness of the short and long folds.

[0050] In one embodiment of this utility model, the paper pusher groove 31 may include a guide channel 311 connected to the trapezoidal channel 113a and a second groove 312 connected to the first groove 113b. It is understood that since the U-shaped insulating paper can be formed into O-shaped insulating paper at the edge-wrapping mold cover 4, providing the guide channel 311 in the paper pusher groove 31 can enhance the pressure on the bent edges of the O-shaped insulating paper when it passes through the paper pusher groove 31, thus consolidating the forming effect. To facilitate smooth passage through the paper pusher groove 31, the push rod 8 may also be adaptively provided with a third groove 83 suitable for passing through the narrowest part of the guide channel 311.

[0051] Specifically, the paper pusher trough 31 may also be provided with a transition slope 32 at the connection between the guide channel 311 and the trapezoidal channel 113a, to facilitate the smooth transition of the insulating paper into the guide channel 311, such as... Figure 4 As shown.

[0052] like Figure 6 and Figure 8 As shown, in one embodiment of this utility model, the O-type insulating paper edge-wrapping mechanism may further include a paper feeding mechanism 9, used to eccentrically transfer the insulating paper into the forming groove 11, so that the insulating paper entering the forming groove 11 is biased towards one side of the long folding groove 412 relative to the forming blade 2. Specifically, the paper feeding mechanism 9 may include a paper feeding cover plate 91, a paper feeding track 92, and an optional paper guide roller 93. The paper feeding cover plate 91 and the paper feeding track 92 form a second paper feeding channel suitable for the passage of the insulating paper. The second paper feeding channel corresponds to the forming groove 11, and the insulating paper output from the second paper feeding channel and entering the forming groove 11 is biased towards one side of the long folding groove 412 relative to the forming blade 2.

[0053] In one embodiment of this invention, the outlet width of the second paper feed channel can be adapted to the width of the insulating paper. When the outlet of the second paper feed channel is a symmetrical outlet, the axis of symmetry of the outlet is biased towards one side of the long folding groove 412 relative to the forming blade 2, so that the insulating paper entering the forming groove 11 is biased towards one side of the long folding groove 412 relative to the forming blade 2. In some other embodiments of this invention, the outlet width of the second paper feed channel can also be greater than the width of the insulating paper, and a guide block can also be provided in the second paper feed channel so that the insulating paper output from the outlet of the second paper feed channel is biased towards one side of the long folding groove 412 relative to the forming blade 2, etc. This embodiment does not impose any limitations.

[0054] like Figures 8 to 10 As shown, in one embodiment of the present invention, the paper feed track 92 may be provided with two opposing pre-bending grooves 921 at the entrance of the second paper feed channel, and the paper feed cover plate 91 is provided with a bending guide block 94. A pre-bending space suitable for pre-bending the edge of the insulating paper is formed between the bending guide block 94 and each pre-bending groove 921. The paper feed mechanism 9 may also be provided with a paper pressing wheel 95 on one side of the second paper feed channel. The paper feed cover plate 91 is provided with a through hole 911 suitable for the rotation of the paper pressing wheel 95 so that the paper pressing wheel 95 can bend and reinforce the pre-bent insulating paper.

[0055] By setting a pre-bending groove 921 and a bending guide block 912 in the second paper feeding channel, the insulating paper is pre-bent before entering the first forming mold base 1, which can form creases on the insulating paper. At the same time, the paper pressing roller 95 can further strengthen the bending effect and make the crease position more stable. When the forming knife 2 pushes the insulating paper into the forming groove 11 and folds the U-shaped insulating paper, although the folded edge on the pre-bent insulating paper will be flattened, the crease will be retained on the U-shaped insulating paper in the forming groove 11. This can effectively reduce the bending resistance of the long and short folded edges of the U-shaped insulating paper in the edge covering mold cover 4, making the edge bending stable and reliable.

[0056] exist Figure 8 In the illustrated embodiment, the paper feed mechanism 9 has a paper guide roller 93 located in the middle of the paper feed track 92, which works in conjunction with the pressure roller 95 to drive the insulating paper to move. In other embodiments of this invention, the paper guide rollers may also be a pair of paper guide rollers located on both sides of the insulating paper, and the paper guide roller group may also be located at the paper feed point or paper output point of the paper feed mechanism 9, etc. This embodiment does not impose any limitations.

[0057] In one embodiment of this utility model, a paper-pressing block 96 is further provided on the side of the pre-bending groove 921 away from the entrance of the second paper feeding channel. The paper-pressing block 96 can be installed on the paper feeding cover plate 91 or the paper feeding track 92. The paper-pressing block 96 can be provided with a paper-pressing inclined surface extending from the paper feeding cover plate 91 to the paper feeding track 92, so that the edge of the insulating paper that is originally bent in the pre-bending groove 921 can be further bent between the paper-pressing inclined surface and the paper feeding track 92, thereby achieving bending reinforcement. The paper-pressing block 96 can be disposed on one side of the paper-pressing roller 95. Preferably, the paper-pressing block 96 can be disposed between the paper-pressing roller 95 and the pre-bending groove 921, such as... Figure 11 As shown, a fine-tuning mechanism 97 may also be provided on the side of the pressure roller 95 away from the second paper feed channel to adjust the distance between the pressure roller 95 and the insulating paper. In some other embodiments of this utility model, the pressure roller 95 may not be provided, and only a pressure block 96 may be provided in the second paper feed channel, etc. This embodiment does not limit this.

[0058] Combination Figure 12 The deformation process of the insulating paper is explained as follows: The initial state of the insulating paper before entering the O-type insulating paper edge-wrapping mechanism is insulating paper A; when the O-type insulating paper edge-wrapping mechanism includes a paper feeding mechanism that can pre-bend the insulating paper, the insulating paper is pre-pressed according to the required bending position through pre-pressing. Insulating paper A will be pre-bent in the paper feeding mechanism before entering the first forming die, and creases will be formed on both sides of the insulating paper A; the insulating paper A with creases will be bent into a U-shaped insulating paper B containing short creases and long creases in the forming groove under the push of the forming knife, wherein the short creases and long creases have the creases left before; finally, the long creases and short creases of the U-shaped insulating paper B will be bent and wrapped again at the paper push groove and edge-wrapping die cover to form O-type insulating paper C.

[0059] If the O-type paper insulation paper edge-wrapping mechanism does not include a paper feeding mechanism that can pre-bend the insulation paper, the insulation paper A can also be directly bent into a U-shaped insulation paper B containing a short fold and a long fold under the push of the forming knife in the forming groove. However, there are no pre-reserved creases on the short fold and long fold of the U-shaped insulation paper B, and the forming resistance encountered when bending the O-type insulation paper C will be greater. This can also be solved by extending the length of the fold separation part and the fold overlap part, increasing the bending time, etc., and is not limited here.

[0060] In addition, to achieve the above objectives, this utility model also proposes a paper inserter.

[0061] like Figure 13 As shown, the paper inserter of this utility model embodiment includes the O-type paper insulation paper edge wrapping mechanism 10 as described above and the frame 20 on which the O-type paper insulation paper edge wrapping mechanism 10 is installed.

[0062] The paper inserter of this utility model embodiment, since it includes the O-type paper insulation paper edge wrapping mechanism 10 as described above, also has the above-mentioned beneficial effects, which will not be repeated here.

[0063] In one embodiment of this utility model, a stator bracket 30 may also be installed on the frame 20 to support the stator above the O-type insulating paper edge-wrapping mechanism 10, so that the O-type insulating paper formed by edge wrapping in the O-type insulating paper edge-wrapping mechanism 10 can enter the stator slot to realize the paper insertion process.

[0064] In some embodiments of this utility model, the paper inserter may also be provided with a rotating mechanism for rotating the stator so that the stator slots to be inserted are sequentially positioned above the paper pusher slot 31. After the O-type insulating paper in a single stator slot is inserted, the stator is rotated by a preset angle so that the next stator slot to be inserted is positioned above the paper pusher slot 31. The preset angle can be adjusted according to the number of stator slots or other actual needs. The rotating mechanism may be an indexing mechanism, such as that in patent CN202011421972.X, and this embodiment is not limited thereto.

[0065] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. An O-type insulating paper edge-wrapping mechanism, characterized in that, include: The first molding mold base (1) has a molding groove (11) formed therein. The forming blade (2) is used to push the insulating paper into the forming groove (11) and fold it into a U-shaped insulating paper containing a short fold and a long fold. The second forming mold base (3) is provided with a paper pusher groove (31) connected to the forming groove (11), and a wrapping mold cover (4) is provided on one side of the paper pusher groove (31). The edge-sealing mold cover (4) is provided with an edge separation part (41) and an edge overlapping part (42). The edge separation part (41) is connected to the forming groove (11). The edge separation part (41) includes staggered short edge grooves (411) and long edge grooves (412), which are used to bend the short edge and the long edge, respectively. The edge overlapping part (42) includes a transition block (421) connected to the short edge groove (411) and a transition groove (422) located on one side of the transition block (421). The transition groove (422) is connected to the long edge groove (412) so that the long edge of the U-shaped insulating paper wraps around the short edge after the short edge is bent, forming an O-shaped insulating paper.

2. The O-type insulating paper edge-wrapping mechanism according to claim 1, characterized in that, The short folded edge groove (411) is an oblique arc groove. The end of the oblique arc groove connected to the transition block (421) is higher than the end of the oblique arc groove facing the forming groove (11). The lowest point of the bottom surface of the long folded edge groove (412) is lower than the lowest point of the oblique arc groove. The inlet of the transition groove (422) is connected to the long folded edge groove (412). The outlet of the transition groove (422) is not higher than the contact surface between the transition block (421) and the insulating paper.

3. The O-type insulating paper edge-wrapping mechanism according to claim 1, characterized in that, The forming groove (11) includes a first paper feeding channel (111), a bending channel (112), and a paper pushing channel (113) that are connected. The first paper feeding channel (111) is used to transmit insulating paper that enters from the outside. The width of the bending channel (112) is smaller than the width of the first paper feeding channel (111). The paper pushing channel (113) is connected to the paper pushing groove (31). The forming blade (2) moves back and forth between the first paper feeding channel (111) and the paper pushing channel (113).

4. The O-type insulating paper edge-wrapping mechanism according to claim 3, characterized in that, It also includes a paper cutter (5) and a drive mechanism (6). The paper cutter (5) is located at the entrance of the first paper feeding channel (111). The paper cutter (5) and the forming blade (2) are mounted on the same blade holder (7). The drive mechanism (6) is used to drive the blade holder (7) to drive the paper cutter (5) and the forming blade (2) to move back and forth synchronously.

5. The O-type insulating paper edge-wrapping mechanism according to claim 3, characterized in that, Also includes: The push rod (8) is used to push the U-shaped insulating paper in the paper pushing channel (113) into the paper pushing groove (31).

6. The O-type insulating paper edge-wrapping mechanism according to claim 5, characterized in that, The push rod (8) includes a paper pusher (81) and support blocks (82) located on both sides of the paper pusher (81). The paper pusher channel (113) includes a trapezoidal channel (113a) and a first groove (113b) connected to the trapezoidal channel (113a) and suitable for the support block (82) to pass through. The narrowest part of the trapezoidal channel (113a) is suitable for the paper pusher (81) to pass through, and the widest part of the trapezoidal channel (113a) is connected to the bending channel (112).

7. The O-type insulating paper edge-wrapping mechanism according to claim 6, characterized in that, The paper pusher groove (31) includes a guide channel (311) connected to the trapezoidal channel (113a) and a second groove (312) connected to the first groove (113b).

8. The O-type insulating paper edge-wrapping mechanism according to claim 1, characterized in that, It also includes a paper feeding mechanism (9), which includes a paper feeding cover plate (91) and a paper feeding track (92). The paper feeding cover plate (91) and the paper feeding track (92) form a second paper feeding channel suitable for the passage of the insulating paper. The second paper feeding channel corresponds to the forming groove (11), and the insulating paper output from the second paper feeding channel and entering the forming groove (11) is biased towards one side of the long folding groove (412) relative to the forming knife (2).

9. The O-type insulating paper edge-wrapping mechanism according to claim 8, characterized in that, The paper feed track (92) has two opposing pre-bending grooves (921) at the entrance of the second paper feed channel. The paper feed cover plate (91) is provided with a bending guide block (94). A pre-bending space suitable for pre-bending the edge of the insulating paper is formed between the bending guide block (94) and each of the pre-bending grooves (921). The paper feed mechanism (9) is also provided with a paper pressing wheel (95) on one side of the second paper feed channel. The paper feed cover plate (91) has a through hole (911) suitable for the rotation of the paper pressing wheel (95) so that the paper pressing wheel (95) can bend and reinforce the pre-bent insulating paper.

10. A paper inserter, characterized in that, It includes an O-type insulating paper edge-wrapping mechanism (10) as described in any one of claims 1-9 above and a frame (20) for mounting the O-type insulating paper edge-wrapping mechanism (10).

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