Stator insulation paper forming device

Abstract

The present invention relates to a stator insulation paper forming device, which includes a paper folding mechanism and a material pushing mechanism. The material pushing mechanism pushes the insulation paper into the paper folding mechanism. The paper folding mechanism includes a first forming assembly and a second forming assembly. The first forming assembly includes an upper die, a lower die, and a folding die. The upper die can be raised and lowered relative to the lower die. The folding die is installed in the lower die. The folding die is used to place the insulation paper to be formed. By pressing the upper die down, the insulation paper is bent on the folding die and a first fold is pressed out. The second forming assembly includes a forming member, which is rotatably arranged in the lower die. The upper die can drive the forming member to rotate so that the forming member further bends the insulation paper on the folding die and presses out a second fold. The second forming assembly is arranged within the first forming assembly, reducing the occupied space. There is no need to set up two separate processes. Only the upper die needs to be pressed down to form two folds of the insulation paper at once. The process is simple and convenient, and production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor preparation, and in particular to a stator insulation paper forming device. Background Art

[0002] To ensure insulation between the motor stator core and winding coils, insulating paper needs to be inserted into the stator slots. Before inserting the insulating paper, it needs to be folded into a shape that fits the stator slots for easy insertion.

[0003] During the folding and forming process of insulating paper, the insulating paper needs to be transported to a creasing machine for creasing and cutting, and then folded into a three-dimensional shape. This requires two separate processes of creasing and folding to form the insulating paper. The forming device occupies a large space and reduces production efficiency.

[0004] Therefore, there is an urgent need for a stator insulation paper forming device to solve the above technical problems. Summary of the Invention

[0005] The object of the present invention is to provide a stator insulation paper forming device to solve the problem that the existing stator insulation paper forming device occupies a large space and has a reduced production efficiency due to the fact that indentation and folding are two separate processes.

[0006] To achieve the above-mentioned object, the present invention provides a stator insulation paper forming device, comprising a paper folding mechanism and a material pushing mechanism, wherein the material pushing mechanism pushes the insulation paper into the paper folding mechanism, and the paper folding mechanism comprises:

[0007] a first forming assembly comprising an upper die, a lower die, and a folding die, wherein the upper die is movable relative to the lower die, the folding die being installed in the lower die, the folding die being configured to place insulating paper to be formed, and the upper die being pressed downward to bend the insulating paper to be formed on the folding die and press out a first fold of the insulating paper;

[0008] The second molding assembly includes a molding part, which is rotatably arranged in the lower die. The upper die can drive the molding part to rotate so that the molding part bends the insulating paper on the folding die and presses out a second fold of the insulating paper.

[0009] Furthermore, the upper die includes an integrally formed forming boss and an upper die base plate. The upper die base plate can be raised and lowered relative to the lower die. The forming boss can further bend the insulating paper on the folding die and press out a first crease on the insulating paper.

[0010] Furthermore, the upper pressing die further comprises a pressing boss, which is integrally formed with the upper die base plate, and the pressing boss can contact the molded part to drive the molded part to rotate.

[0011] Furthermore, the molded part includes an integrally formed rotating shaft portion and a fan-shaped portion, the rotating shaft portion is rotatably arranged in the lower pressing die, the lower pressing boss can contact the fan-shaped portion, and the fan-shaped portion can bend the insulating paper on the folding die and press out a second crease of the insulating paper.

[0012] Furthermore, the forming part further includes a raised portion, which is protruding from the rotating shaft portion and can limit the insulating paper to be formed.

[0013] Furthermore, the paper folding mechanism also includes a pressing assembly, which includes a pressing block. The pressing block is liftably arranged on the forming boss, and the pressing block can press the insulating paper to be formed onto the folding mold.

[0014] Furthermore, the pressing block includes a pressing arc surface, and the folding die is provided with a folding arc surface, and the pressing arc surface and the folding arc surface press against the insulating paper to be formed from opposite sides.

[0015] Furthermore, the pressing assembly further comprises a pressing spring, one end of which is connected to the pressing block, and the other end of which is connected to the upper mold base plate.

[0016] Furthermore, a limiting groove is provided on the folding die, and the forming part can be partially stuck in the limiting groove to limit the rotation stroke of the forming part.

[0017] Furthermore, a folding slope is provided in the limiting groove, and the forming part can press the insulating paper after the first fold is pressed onto the folding slope, so as to bend the insulating paper on the insulating paper and press out the second fold.

[0018] Furthermore, the pushing mechanism includes a base, a storage assembly and a pushing assembly, the storage assembly can store stacked insulating paper and press the single insulating paper onto the base, and the pushing assembly includes a pushing plate, which is movably arranged on the base to push the insulating paper into the folding mechanism.

[0019] The beneficial effects of the present invention are:

[0020] The stator insulation paper forming device provided by the present invention includes a paper folding mechanism and a pushing mechanism. The pushing mechanism pushes the insulation paper into the paper folding mechanism. The paper folding mechanism includes a first forming component and a second forming component. The first forming component includes an upper pressing die, a lower pressing die and a folding die. The upper pressing die can be raised and lowered relative to the lower pressing die. The folding die is installed in the lower pressing die. The folding die is used to place the insulation paper to be formed. By pressing the upper pressing die downward, the insulation paper to be formed is bent on the folding die and a first fold of the insulation paper is pressed out. The second forming component includes a forming part. The forming part is rotatably arranged in the lower pressing die. The upper pressing die can drive the forming part to rotate so that the forming part further bends the insulation paper on the folding die and presses out a second fold of the insulation paper. The second molding component is arranged in the first molding component, which reduces the occupied space; by pressing down the upper die, a first crease can be pressed out on the folding die, and the upper die is pressed down further, and the upper die drives the molding part to rotate, thereby pressing out a second crease on the folding die. There is no need for two separate processes, and only the upper die needs to be pressed down to form a part in one step. The process is simple and convenient, which improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the insulating paper after forming provided by an embodiment of the present invention;

[0022] Figure 2 1 is a schematic structural diagram of a stator insulation paper forming device provided in an embodiment of the present invention;

[0023] Figure 3 This is a structural schematic diagram of the stator insulation paper forming device provided by an embodiment of the present invention from another angle;

[0024] Figure 4 1 is a structural diagram of a material pushing mechanism provided by an embodiment of the present invention;

[0025] Figure 5 This is a structural diagram of the pusher mechanism provided by an embodiment of the present invention from another angle;

[0026] Figure 6 This is a schematic diagram of the partial structure of the pushing mechanism provided by the embodiment of the present invention. Figure 1 ;

[0027] Figure 7 This is a schematic diagram of the partial structure of the pushing mechanism provided by the embodiment of the present invention. Figure 2 ;

[0028] Figure 8 This is a schematic diagram of the partial structure of the pushing mechanism provided by the embodiment of the present invention. Figure 3 ;

[0029] Figure 9 is a structural schematic diagram of a paper folding mechanism provided by an embodiment of the present invention;

[0030] Figure 10 This is a partial structural diagram of the paper folding mechanism provided by an embodiment of the present invention. Figure 1 ;

[0031] Figure 11 This is a partial structural diagram of the paper folding mechanism provided by an embodiment of the present invention. Figure 2 ;

[0032] Figure 12 is a schematic structural diagram of a molded part provided by an embodiment of the present invention;

[0033] Figure 13 is a schematic structural diagram of a molded part provided by an embodiment of the present invention from another angle;

[0034] Figure 14 yes Figure 12 A partial enlarged view of point A in the middle;

[0035] Figure 15 It is a structural schematic diagram of the upper template provided by an embodiment of the present invention;

[0036] Figure 16 This is a schematic diagram of the forming process of the stator insulation paper forming device provided by the embodiment of the present invention. Figure 1 ;

[0037] Figure 17 This is a schematic diagram of the forming process of the stator insulation paper forming device provided by the embodiment of the present invention. Figure 2 ;

[0038] Figure 18 This is a schematic diagram of the forming process of the stator insulation paper forming device provided by the embodiment of the present invention. Figure 3 ;

[0039] Figure 19 This is a schematic diagram of the forming process of the stator insulation paper forming device provided by the embodiment of the present invention. Figure 4 ;

[0040] Figure 20 This is a schematic diagram of the forming process of the stator insulation paper forming device provided by the embodiment of the present invention. Figure 5 .

[0041] In the picture:

[0042] 100, stator insulation paper forming device; 200, insulation paper; 201, first fold; 202, second fold;

[0043] 1. Paper folding mechanism; 2. Material pushing mechanism;

[0044] 11. First molding assembly; 12. Second molding assembly; 13. Pressing assembly; 14. Molding guide assembly; 15. Molding return member; 21. Base; 22. Material storage assembly; 23. Material pushing assembly; 24. Moving assembly;

[0045] 111. Upper die; 112. Lower die; 113. Folding die; 121. Forming part; 122. Limiting slide; 131. Pressing block; 132. Pressing spring; 133. Movable column; 141. Forming guide column; 211. Moving chute; 212. Paper limiting chute; 221. Hopper; 222. Discharging assembly; 223. Discharging guide assembly; 224. First fastener; 231. Push plate; 232. Connecting block; 241. Cylinder; 242. Slider; 243. Fixed block;

[0046] 1111, forming boss; 1112, pressing boss; 1113, upper mold base; 1114, movable groove; 1121, lower mold base; 1122, lower mold front plate; 1123, mounting cavity; 1131, limiting groove; 1132, folding edge bevel; 1133, folding edge arc surface; 1211, rotating shaft; 1212, fan-shaped portion; 1213, raised portion; 1214, positioning groove; 1215, limiting slide; 12 16. Lower pressing surface; 1217. Forming surface; 1311. Pressing arc surface; 2211. Avoidance groove; 2221. Discharge pressure plate; 2222. Discharge spring; 2223. Discharge seat; 2224. Connecting frame; 2225. First ear seat; 2226. Second ear seat; 2227. Second fastener; 2231. Discharge guide column; 2232. Discharge guide sleeve; 2421. Sliding portion; 2422. Anti-slip portion. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only show portions relevant to the present invention, not all of them.

[0048] Some directional words are defined in the present invention. Unless otherwise specified, the directional words used, such as "up", "down", "left", "right", "inside" and "outside", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of the present invention.

[0049] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0050] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0051] This embodiment provides a stator insulation paper forming device 100 for folding a planar insulation paper 200 into a three-dimensional shape. The shape of the folded insulation paper 200 can be adapted to the stator slots of the motor, so that the folded insulation paper 200 can be inserted between the stator core and the winding coil, thereby isolating the winding coil and the stator core to provide insulation protection.

[0052] like Figure 1 As shown, the three-dimensional insulating paper 200 obtained by folding includes a middle part, two first bending parts and two second bending parts, the two ends of the middle part are respectively connected to the first bending parts, and each first bending part is provided with a second bending part at one end away from the middle part.

[0053] In a planar state, the insulating paper 200 includes a first end and a second end opposite to each other, and is folded along a line connecting the first end and the second end to form two first folds 201 and two second folds 202 .

[0054] During the folding process of the insulating paper 200, two first folds 201 and two second folds 202 are formed on the insulating paper 200. The two first folds 201 are symmetrically arranged, and the two second folds 202 are symmetrically arranged, located between the first fold 201 and the second fold 202 on the same side, and the second fold 202 is located outside the first fold 201. In other words, the middle portion is formed between the two first folds 201, the first bend portion is formed between the first fold 201 and the second fold 202 on the same side, and the second bend portion is formed between the second fold 202 and the end (first end or second end) of the insulating paper 200.

[0055] like Figure 2 and Figure 3 As shown, the stator insulation paper forming device 100 includes a paper folding mechanism 1 and a pushing mechanism 2. The pushing mechanism 2 can push the planar insulation paper 200 into the paper folding mechanism 1. The paper folding mechanism 1 can fold the planar insulation paper 200 into a first crease 201 and a second crease 202, and fold the planar insulation paper 200 into a three-dimensional shape for subsequent use.

[0056] like Figure 4 and Figure 5 As shown, the pushing mechanism 2 includes a base 21, a storage assembly 22 and a pushing assembly 23. A limited paper slot 212 is provided on the base 21. The storage assembly 22 includes a hopper 221 and a discharge assembly 222. The hopper 221 is installed on the base 21. The hopper 221 is configured to store stacked insulating paper 200. The discharge assembly 222 includes a discharge pressure plate 2221. The discharge pressure plate 2221 can be raised and lowered in the hopper 221 to press the insulating paper 200 into the paper limiting slot 212. The pushing assembly 23 includes a pushing plate 231. The pushing plate 231 is movably provided on the base 21 to push the insulating paper 200 in the paper limiting slot 212 out of the pushing mechanism 2. The insulating paper 200 in the hopper 221 is pressed into the paper limiting slot 212 by the lifting and lowering of the discharge pressure plate 2221. The push plate 231 pushes the insulating paper 200 in the limiting slot out of the pushing mechanism 2. This arrangement allows the insulating paper 200 to be automatically replenished into the paper limiting slot 212 and sequentially pushed out of the pushing mechanism 2, improving molding efficiency. The insulating paper 200 can be cut to a specific size and then placed in the hopper 221 for stacking and storage, eliminating the need for roll transportation. This reduces damage to the insulating paper 200 and reduces the manufacturing cost of the motor.

[0057] Specifically, to facilitate the pushing mechanism 2 in pushing the insulating paper 200 out of the pushing mechanism 2 and onto the paper folding mechanism 1, the distance between the lower end of the hopper 221 and the bottom surface of the paper limiting slot 212 is between the thickness of a single sheet of insulating paper 200 and two adjacent sheets of insulating paper 200. The height of the paper limiting slot 212 is limited so that it can accommodate a single, complete sheet of insulating paper 200. In this embodiment, the pushing plate 231 pushes the single sheet of insulating paper 200 in the limiting slot into the paper folding mechanism 1, facilitating the paper folding mechanism 1 to fold the insulating paper 200 into shape.

[0058] It should be noted that the pushing mechanism 2 provided in this embodiment is not limited to being used in the molding process of the insulating paper 200, but can also be applied to other scenarios where stacked materials need to be stored and transported outward relative to the pushing mechanism 2.

[0059] Furthermore, the discharge port of the hopper 221 is arranged opposite to the paper limiting slot 212 , so that the discharge pressing plate 2221 can press the insulating paper 200 into the paper limiting slot 212 .

[0060] Furthermore, the material storage assembly 22 further includes a first fastener 224 , and the hopper 221 is mounted on the base 21 via the first fastener 224 .

[0061] In this embodiment, the number and distribution of the first fasteners 224 are not specifically limited, as long as the hopper 221 can be installed on the base 21 .

[0062] Furthermore, the discharge assembly 222 also includes a discharge spring 2222, one end of which is connected to the discharge pressure plate 2221, and the other end is connected to the base 21. Relying on the elastic force of the discharge spring 2222, the discharge pressure plate 2221 is raised and lowered, and the stacked insulating paper 200 is pressed against the paper limiting slot 212, so that a single sheet of insulating paper 200 can be automatically added to the paper limiting slot 212.

[0063] Further, the discharge assembly 222 also includes a discharge seat 2223, the discharge seat 2223 is installed on the base 21, and the other end of the discharge spring 2222 is connected to the discharge seat 2223. Specifically, the discharge seat 2223 is installed on the side of the base 21.

[0064] Furthermore, the discharge assembly 222 also includes a second fastener 2227 , and the discharge seat 2223 is installed on the side of the base 21 through the second fastener 2227 .

[0065] Furthermore, the discharge assembly 222 also includes a first ear seat 2225 , which is installed on the discharge seat 2223 , and the other end of the discharge spring 2222 is connected to the first ear seat 2225 .

[0066] Furthermore, the discharge assembly 222 also includes a connecting frame 2224 , which is connected to the discharge pressing plate 2221 , and one end of the discharge spring 2222 is connected to the connecting frame 2224 .

[0067] Furthermore, the discharge assembly 222 also includes a second ear seat 2226 , which is installed on the connecting frame 2224 , and one end of the discharge spring 2222 is connected to the second ear seat 2226 .

[0068] Furthermore, the connection position between the discharge seat 2223 and the discharge spring 2222 is lower than the installation position of the hopper 221 and the base 21. The distance from the connection position between the discharge seat 2223 and the discharge spring 2222 to the installation position of the hopper 221 and the base 21 is defined as distance h, and the original length of the discharge spring 2222 is less than or equal to h. This arrangement ensures that when the stacked insulating paper 200 is stored in the hopper 221, the discharge spring 2222 is in an extended state, and the elastic force of the discharge spring 2222 is in the stacking direction of the insulating paper 200, so that the discharge pressure plate 2221 presses the stacked insulating paper 200 above the paper limiting slot 212, facilitating the automatic replenishment of a single sheet of insulating paper 200 into the paper limiting slot 212.

[0069] Furthermore, the material storage assembly 22 also includes a material discharge guide assembly 223, which includes a material discharge guide post 2231 and a material discharge guide sleeve 2232. The material discharge guide post 2231 is fixed relative to the base 21, and the material discharge guide sleeve 2232 is connected to the connecting frame 2224. The material discharge guide sleeve 2232 is arbitrarily mounted on the material discharge guide post 2231. Specifically, the material discharge guide post 2231 can be mounted on the material discharge seat 2223. The arrangement of the material discharge guide assembly 223 serves to guide the raising and lowering of the material discharge pressure plate 2221.

[0070] Furthermore, the hopper 221 is provided with an avoidance groove 2211, which extends in the height direction and avoids the connecting frame 2224. The arrangement of the avoidance groove 2211 ensures that the connecting frame 2224 will not interfere with the movement of the hopper 221 when following the lifting of the discharge pressing plate 2221.

[0071] like Figure 6 and Figure 7 As shown, the pushing mechanism 2 further includes a moving assembly 24 , which includes a cylinder 241 . The cylinder 241 is mounted on the base 21 , and a telescopic end of the cylinder 241 is connected to the pushing plate 231 .

[0072] Furthermore, the moving assembly 24 further includes a fixing block 243 , which is mounted on the base 21 , and the cylinder 241 is mounted on the fixing block 243 .

[0073] Furthermore, the moving component 24 also includes a slider 242. A moving slot 211 is provided on the base 21. The slider 242 is connected to the telescopic end of the cylinder 241. The slider 242 is slidably disposed in the moving slot 211. The slider 242 is connected to the push plate 231.

[0074] Furthermore, the pusher assembly 23 also includes a connecting block 232, which is mounted on a slider 242, and a pusher plate 231 is mounted on the connecting block 232. The telescopic end of the cylinder 241 extends and retracts, driving the slider 242 to slide in the movable chute 211. The slider 242 drives the connecting block 232 and the pusher plate 231 to move, thereby causing the pusher plate 231 to push the insulating paper 200 out of the pusher mechanism 2.

[0075] like Figure 8 As shown, the slider 242 includes a sliding portion 2421 and an anti-slip portion 2422. The sliding portion 2421 and the anti-slip portion 2422 are integrally formed. The sliding portion 2421 is slidably disposed in the movable chute 211. The anti-slip portion 2422 is larger than the movable chute 211. This arrangement prevents the slider 242 from falling off the movable chute 211, allowing the push plate 231 to stably push the insulating paper 200.

[0076] like Figures 9-11 As shown, the paper folding mechanism 1 includes a first forming component 11 and a second forming component 12. The first forming component 11 includes an upper pressing die 111, a lower pressing die 112 and a folding die 113. The upper pressing die 111 can be raised and lowered relative to the lower pressing die 112. The folding die 113 is installed in the lower pressing die 112. The folding die 113 is configured to place the insulating paper 200 to be formed. By pressing the upper pressing die 111 downward, the insulating paper 200 to be formed is bent on the folding die 113 and a first fold 201 of the insulating paper 200 is pressed out. The second forming component 12 includes a forming part 121. The forming part 121 is rotatably arranged in the lower pressing die 112. The upper pressing die 111 can drive the forming part 121 to rotate so that the forming part 121 further bends the insulating paper 200 on the folding die 113 and presses out a second fold 202 of the insulating paper 200. The second molding assembly 12 is arranged in the first molding assembly 11, reducing the occupied space; by pressing down the upper die 111, the insulating paper 200 can be bent on the folding die 113 and a first fold 201 can be pressed out. The upper die 111 is further pressed down, and the upper die 111 drives the molding part 121 to rotate, thereby bending the insulating paper 200 again on the folding die 113 and pressing out a second fold 202. There is no need for two separate processes. Only the upper die 111 needs to be pressed down to form the insulating paper in one step. The process is simple and convenient, which improves production efficiency.

[0077] Specifically, no motion interference occurs between the first molding assembly 11 and the second molding assembly 12 provided in this embodiment.

[0078] Furthermore, a mounting cavity 1123 is provided on the lower pressing die 112 , and the folding die 113 and the second molding assembly 12 are both installed in the mounting cavity 1123 .

[0079] Furthermore, the lower die 112 includes a lower die base 1121 and a lower die front plate 1122, and the lower die front plate 1122 is detachably connected to the lower die base 1121. This arrangement allows the lower die front plate 1122 to be removed, thereby exposing the installation cavity 1123, making it easier to maintain the hemming die 113 and the second molding assembly 12 in the installation cavity 1123.

[0080] Furthermore, the upper die 111 includes an integrally formed forming boss 1111 and an upper die base plate 1113. The upper die base plate 1113 can be raised and lowered relative to the lower die 112. The forming boss 1111 can bend the insulating paper 200 to be formed on the folding die 113 and press out the first crease 201 of the insulating paper 200.

[0081] Furthermore, there are two forming bosses 1111, which are spaced apart on the upper mold base plate 1113 to form a cavity. The folding die 113 can extend into the cavity to bend the insulating paper 200 and press the first fold 201 into the insulating paper 200. When the upper pressing die 111 is pressed downward, the folding die 113 extends into the cavity, causing the insulating paper 200 to be folded into an inverted U shape.

[0082] Specifically, a hydraulic press can be used to drive the upper die 111 to move up and down. In this embodiment, there is no limitation on the power source for the upper die 111 to move up and down, and a suitable power source can be selected according to actual conditions.

[0083] Furthermore, the upper die 111 further includes a pressing boss 1112, which is integrally formed with the upper die base 1113. The pressing boss 1112 can contact the molded part 121 to drive the molded part 121 to rotate. During the downward pressing process of the upper die 111, the pressing boss 1112 can contact the molded part 121. Continuing to press the upper die 111 downward can drive the molded part 121 to rotate, thereby further bending the insulating paper 200 on the folding die 113 and pressing out the second fold 202.

[0084] Furthermore, there are two pressing bosses 1112, which are spaced apart on the upper mold base plate 1113 and located on both sides of the two forming bosses 1111. The cavity formed between the forming bosses 1111 and the pressing bosses 1112 provides space for the molded part 121 to rotate.

[0085] Specifically, the molding boss 1111 and the pressing boss 1112 are both protruded on the upper mold base plate 1113 toward the direction of the second molding component 12 .

[0086] Furthermore, the paper folding mechanism 1 further includes a forming guide assembly 14 , which is disposed between the upper die 111 and the lower die 112 and is used to guide the lifting and lowering of the upper die 111 .

[0087] Furthermore, the forming guide assembly 14 includes a forming guide column 141 . The forming guide column 141 is mounted on the lower die 112 . The upper die 111 is movably mounted on the forming guide column 141 .

[0088] Furthermore, the number of the forming guide column 141 is at least one, and each forming guide column 141 is installed on the lower die 112 .

[0089] This embodiment does not limit the installation position of each forming guide column 141, and it can be set according to actual needs.

[0090] In this embodiment, there are two forming guide pillars 141 , each forming guide pillar 141 is mounted on the lower die 112 , and the extending direction of the two forming guide pillars 141 is consistent with the extending direction of the forming boss 1111 .

[0091] Furthermore, the paper folding mechanism 1 includes a forming recovery member 15, which is sleeved on the forming guide post 141. One end of the forming recovery member 15 is connected to the upper mold base plate 1113, and the other end is connected to the lower mold 112. The provision of the forming recovery member 15 can assist in resetting the upper mold 111.

[0092] Specifically, the molding return member 15 can be a spring, and the molding return member 15 and the molding guide column 141 are disposed in a one-to-one correspondence.

[0093] Furthermore, the paper folding mechanism 1 includes a pressing assembly 13, which includes a pressing block 131. The pressing block 131 is movably mounted on the forming boss 1111. The pressing block 131 is capable of pressing the insulating paper 200 to be formed against the folding die 113. The provision of the pressing block 131 can position the insulating paper 200 to be formed, facilitating the pressing of the first fold 201 and the second fold 202 on the insulating paper 200.

[0094] Specifically, the pressing block 131 is arranged in a liftable manner in the cavity formed by the two forming bosses 1111 .

[0095] Furthermore, the pressing block 131 includes a pressing camber 1311, and the folding die 113 is provided with a folding camber 1133. The pressing camber 1311 and the folding camber 1133 press against the insulating paper 200 to be formed from opposite sides. When the pressing block 131 presses the insulating paper 200 against the folding die 113, the folding camber 1133 and the pressing camber 1311 cooperate to press the insulating paper 200 into a curvature. When the curvature of the insulating paper 200 is pressed down by the forming boss 1111, a first fold 201 is pressed out, and the angle between the curvature of the insulating paper 200 and the portion pressed between the forming boss 1111 and the folding die 113 is an acute angle, thereby making the trace of the first fold 201 more obvious and making the shape of the insulating paper 200 after folding and forming more stable.

[0096] It should be noted that since the material of the insulating paper 200 itself has good elasticity and the depths of the folded arc surface 1133 and the pressing arc surface 1311 are relatively shallow, during the process of forming the insulating paper 200, although the insulating paper 200 will be pressed into an arc shape under the cooperation of the folded arc surface 1133 and the pressing arc surface 1311, this part of the deformation on the insulating paper 200 is elastic deformation and will return to its original shape after the force is removed, which will not affect the forming of the insulating paper 200.

[0097] Furthermore, the pressing assembly 13 further includes a pressing spring 132, one end of which is connected to the pressing block 131, and the other end of which is connected to the upper mold base plate 1113. The setting of the pressing spring 132 can assist the pressing block 131 in resetting.

[0098] Furthermore, a limiting groove 1131 is provided on the folding die 113 , and the forming piece 121 can be partially stuck in the limiting groove 1131 to limit the rotation stroke of the forming piece 121 .

[0099] Furthermore, a folding bevel 1132 is provided within the retaining groove 1131. The forming member 121 can press the insulating paper 200, after the first fold 201 is formed, against the folding bevel 1132 to form a second fold 202 in the insulating paper 200. The inclined surface of the folding bevel 1132 is configured so that the angle between the portion of the insulating paper 200 pressed between the forming boss 1111 and the folding die 113 and the portion of the insulating paper 200 pressed between the folding bevel 1132 and the forming member 121 is acute. This makes the second fold 202 more visible and the shape of the insulating paper 200 after folding more stable.

[0100] It should be noted that, since the material of the insulating paper 200 itself has good elasticity, during the process of forming the insulating paper 200, although the insulating paper 200 presses out the second crease 202 on the folding edge bevel 1132, this part of the deformation on the insulating paper 200 is a composite deformation of elastic deformation and plastic deformation, and the deformation will be partially restored after the force is removed, so that the insulating paper 200 is folded into Figure 1 The shape shown.

[0101] like Figure 12 and Figure 13 As shown, the molded part 121 includes an integrally formed shaft portion 1211 and a fan-shaped portion 1212. The shaft portion 1211 is rotatably disposed within the lower pressing die 112. The lower pressing boss 1112 can contact the fan-shaped portion 1212. The fan-shaped portion 1212 can further bend the insulating paper 200 on the folding die 113 and press the second fold 202 of the insulating paper 200. The fan-shaped shape of the fan-shaped portion 1212 facilitates the downward pressure of the lower pressing boss 1112, thereby driving the fan-shaped portion 1212 to rotate and further facilitate pressing the second fold 202 of the insulating paper 200.

[0102] Specifically, the rotating shaft portion 1211 is rotatably disposed in the mounting cavity 1123 .

[0103] Specifically, the sector portion 1212 and the rotation shaft portion 1211 are coaxially arranged.

[0104] Furthermore, a downward pressing surface 1216 is provided on the fan-shaped portion 1212 , and the downward pressing boss 1112 can contact the downward pressing surface 1216 .

[0105] Furthermore, the fan-shaped portion 1212 is provided with a forming surface 1217, which can bend the insulating paper 200 on the folding die 113 and press out the second fold 202 of the insulating paper 200. Specifically, the pressing surface 1216 and the forming surface 1217 are respectively provided on both sides of the rotating shaft portion 1211.

[0106] In this embodiment, the number of the forming pieces 121 is two. The two forming pieces 121 are respectively arranged on both sides of the folding mold 113 , and the two forming pieces 121 are symmetrically arranged.

[0107] Furthermore, the forming member 121 also includes a raised portion 1213, which is protruding from the rotating shaft portion 1211. The raised portion 1213 can limit the insulating paper 200 to be formed. The space enclosed by the two raised portions 1213 and the folded edge arc surface 1133 can accommodate the insulating paper 200 to be formed. The two raised portions 1213 limit the insulating paper 200 to be formed from opposite sides, preventing the insulating paper 200 from shifting in position, thereby ensuring the accuracy of the folding and forming of the insulating paper 200. In other words, the pushing mechanism 2 pushes the insulating paper 200 to be formed into the space enclosed by the two raised portions 1213 and the folded edge arc surface 1133. The two raised portions 1213 limit the insulating paper 200 to be formed from opposite sides.

[0108] Specifically, the raised portion 1213 can be provided near one side of the lower pressing surface 1216. This arrangement ensures that the center of gravity of the molded part 121 itself is not at the geometric center. In the initial state, the molded part 121 will be eccentric and tilted, so that the height of the lower pressing surface 1216 is not less than the height of the forming surface 1217. When the lower pressing boss 1112 presses down on the lower pressing surface 1216, it drives the molded part 121 to rotate, causing the forming surface 1217 to move toward the folding die 113, exerting a bending force on the insulating paper 200 to bend toward the folding die 200, thereby facilitating the formation of the second fold 202 of the insulating paper 200.

[0109] In order to better limit the insulating paper 200 , when the molded part 121 is in the initial state, the distance between the two protrusions 1213 can be set to be slightly larger than the width of the insulating paper 200 .

[0110] It should be noted that in other embodiments, the raised portion 1213 may not be provided on the molded part 121. Under natural gravity, the downward pressure surface 1216 and the molding surface 1217 on the molded part 121 are flush, and the size of the downward pressure boss 1112 can be set according to whether the molded part 121 is provided with the raised portion 1213.

[0111] Specifically, whether the molded part 121 is provided with the protrusion 1213 can be determined based on the size of the insulating paper 200 , the installation position of the molded part 121 on the lower die 112 , and the relative position of the molded part 121 and the limiting groove 1131 opened on the folding die 113 .

[0112] Compared with the case where the raised portion 1213 is not provided, the molded part 121 will be eccentric and tilted in the initial state (natural gravity), so that the height of the pressing surface 1216 is not less than the height of the molding surface 1217. When the size of the pressing boss 1112 is constant, the movement stroke of the pressing boss 1112 will be shortened, thereby improving the molding efficiency. Alternatively, when the movement stroke of the pressing boss 1112 is constant, the size of the pressing boss 1112 will be reduced, thereby saving materials and reducing molding costs.

[0113] like Figure 11 and Figure 13 As shown, the sector 1212 is provided with a limiting slide groove 1215, and the second molding assembly 12 further includes a limiting slide post 122. The limiting slide post 122 is disposed within the mounting cavity 1123 and slides within the limiting slide groove 1215. This arrangement guides the rotation of the molding member 121, ensuring the stability and accuracy of the rotation of the molding member 121, thereby facilitating the molding member 121 to press out the second fold 202 of the insulating paper 200.

[0114] Specifically, the limiting sliding posts 122 and the forming parts 121 are arranged in a one-to-one correspondence.

[0115] like Figure 12 and Figure 14 As shown, a positioning groove 1214 is provided on the forming surface 1217, and the end of the insulating paper 200 can be positioned in the positioning groove 1214. The provision of the positioning groove 1214 can prevent the insulating paper 200 from reversely flanging during the process of pressing the second fold 202.

[0116] like Figures 9-11 and Figure 15 As shown, the pressing assembly 13 further includes a movable post 133. A movable groove 1114 is formed on the molding boss 1111 along the height direction. The movable post 133 is fixedly connected to the pressing block 131 and is slidably disposed in the movable groove 1114. This arrangement ensures that the pressing block 131 presses the insulating paper 200 tightly against the folded curved surface 1133 while not affecting the continued downward pressure of the upper die 111.

[0117] Furthermore, the second molding assembly 12 also includes a reset member, which is disposed between the molding member 121 and the mounting cavity 1123 and is used to return the molding member 121 to its initial state. When the downward pressing boss 1112 rises, the molding member 121 is reset (returned to its initial state) under the action of the reset member and the raised portion 1213. Specifically, the reset member can be a torsion spring, which is disposed between the rotating shaft portion 1211 and the mounting cavity 1123.

[0118] This embodiment also provides a method for forming stator insulation paper 200, the specific process of which is as follows:

[0119] Step S1: The insulating paper 200 to be formed is placed on the folding die 113. Under the limiting action of the two protrusions 1213, the middle part of the insulating paper 200 is located on the folding die 113, and the first end and the second end of the insulating paper 200 are extended out of the folding die 113, forming a suspended state (such as Figure 16 shown);

[0120] Step S2: Press the upper die 111 downward, driving the pressing block 131 to press downward until the pressing block 131 presses the insulating paper 200 to be formed onto the folding die 113 (as shown in FIG. Figure 17 shown);

[0121] Step S3: Continue to press the upper die 111 downward, the pressing block 131 and the upper die 111 move relative to each other, that is, the upper die 111 can continue to press downward, the upper die 111 bends the insulating paper 200 and forms a first fold 201 until the upper die 111 contacts the molded part 121 (such as Figure 18 shown);

[0122] Step S4: Continue to press the upper die 111 downward, the pressing block 131 and the upper die 111 continue to move relative to each other, and the upper die 111 drives the forming member 121 to rotate until the forming member 121 presses the insulating paper 200 against the folding die 113, so that the forming member 121 bends the insulating paper 200 again and forms a second fold 202 (such as Figure 19 and Figure 20 shown).

[0123] Furthermore, the forming member 121 includes a protrusion 1213 , and two protrusions 1213 are respectively provided on both sides of the folding mold 113 . The insulating paper 200 to be formed is located between the two protrusions 1213 to limit the insulating paper 200 to be formed.

[0124] Furthermore, in step S2, the pressing arc surface 1311 provided on the pressing block 131 presses the insulating paper 200 to be formed onto the folding arc surface 1133 provided on the folding mold 113. Under the action of the pressing arc surface 1311 and the folding arc surface 1133, the middle part of the insulating paper 200 forms a certain curvature, and the first end and the second end of the insulating paper 200 are tilted upward.

[0125] Furthermore, in step S3, two spaced-apart forming bosses 1111 on the upper die 111 form a concave cavity. As the upper die 111 is pressed downward, the folding die 113 extends into the concave cavity, bending the insulating paper 200 into a near inverted U-shape and forming a first fold 201 on the insulating paper 200. The portion of the insulating paper 200 pressed between the forming bosses 1111 and the side of the folding die 113 will become the first bent portion of the finally formed insulating paper 200.

[0126] Furthermore, the pressing assembly 13 includes a pressing spring 132, which is connected to the pressing block 131 and the upper die 111, respectively. The pressing spring 132 is compressed during the relative movement of the pressing block 131 and the upper die 111. When the upper die 111 is lifted, the pressing block 131 is reset under the combined action of the pressing spring 132 and the upper die 111.

[0127] Furthermore, the upper pressing die 111 includes a forming boss 1111 and a pressing boss 1112 . In step S3 , the forming boss 1111 bends the insulating paper 200 and forms a first fold 201 until the pressing boss 1112 contacts the forming piece 121 .

[0128] Furthermore, step S4 specifically includes the following steps:

[0129] Step S41: Continue to press the upper die 111 downward, the pressing block 131 and the upper die 111 continue to move relative to each other, and the upper die 111 drives the molded part 121 to rotate until the molded part 121 contacts the insulating paper 200 (as shown in FIG. Figure 19 shown);

[0130] Step S42: Continue to press the upper die 111 downward, the pressing block 131 and the upper die 111 continue to move relative to each other, and the upper die 111 drives the forming member 121 and the insulating paper to move together until the forming member 121 presses the insulating paper 200 against the folding die 113, so that the forming member 121 bends the insulating paper 200 again and forms a second fold 202 (such as Figure 20 shown).

[0131] Furthermore, a positioning groove 1214 is formed on the molded part 121 . In step S41 , the molded part 121 is rotated until the insulating paper 200 is positioned in the positioning groove 1214 .

[0132] Furthermore, a limiting groove 1131 is provided on the folding die 113 . In step S42 , the forming member 121 presses the insulating paper 200 tightly against the limiting groove 1131 to further bend the insulating paper 200 and form a second fold 202 .

[0133] Furthermore, a folded edge slope 1132 is provided in the limiting groove 1131 . In step S42 , the forming member 121 presses the insulating paper 200 against the folded edge slope 1132 .

[0134] Furthermore, in step S4, the upper pressing die 111 continues to press downward, causing the forming boss 1112 to abut against the lower pressing surface 1216 on the forming member 121, thereby driving the forming member 121 to rotate. During the rotation of the forming member 121, the first and second ends of the insulating paper 200 are both locked into the corresponding positioning grooves 1214 on the forming member 121, driving the insulating paper 200 toward the hemming die 113 until the ends of the insulating paper 200 abut against the hemming slope 1132. The insulating paper 200 is then formed along the contour of the hemming die 113: hemming arc 1133 - hemming die 113 side - hemming slope 1132. The portion of the insulating paper 200 that contacts the side of the hemming die 113 forms the first bend of the insulating paper 200, and the portion of the insulating paper 200 that contacts the hemming slope 1132 forms the second bend of the insulating paper 200.

[0135] Although the present invention has been described in detail above using general explanations, specific embodiments, and experiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A stator insulation paper forming device, characterized in that: The invention comprises a paper folding mechanism (1) and a material pushing mechanism (2), wherein the material pushing mechanism (2) pushes insulating paper (200) into the paper folding mechanism (1), and the paper folding mechanism (1) comprises: A first molding assembly (11) comprises an upper die (111), a lower die (112), and a folding die (113); the upper die (111) is movable relative to the lower die (112); the folding die (113) is installed in the lower die (112); the folding die (113) is configured to place the insulating paper (200) to be molded, and by pressing down the upper die (111), the insulating paper (200) to be molded is bent on the folding die (113), and a first fold (201) of the insulating paper (200) is pressed out; The second molding assembly (12) comprises a molding part (121), wherein the molding part (121) is rotatably arranged in the lower pressing die (112), a limiting groove (1131) is provided on the folding die (113), and a folding inclined surface (1132) is provided in the limiting groove (1131), and the upper pressing die (111) can drive the molding part (121) to rotate, so that the molding part (121) presses the insulating paper (200) after the first fold (201) is pressed onto the folding inclined surface (1132), so as to further bend the insulating paper (200) and press out a second fold (202) of the insulating paper (200).

2. The stator insulation paper forming device according to claim 1, characterized in that: The upper die (111) comprises an integrally formed forming boss (1111) and an upper die base plate (1113); the upper die base plate (1113) is movable relative to the lower die (112); the forming boss (1111) is capable of bending the insulating paper (200) to be formed on the folding die (113) and pressing out a first fold (201) of the insulating paper (200).

3. The stator insulation paper forming device according to claim 2, characterized in that: The upper pressing die (111) further comprises a pressing boss (1112), wherein the pressing boss (1112) is integrally formed with the upper die base plate (1113), and the pressing boss (1112) is capable of contacting the molded part (121) to drive the molded part (121) to rotate.

4. The stator insulation paper forming device according to claim 3, characterized in that: The molded part (121) includes an integrally formed rotating shaft portion (1211) and a fan-shaped portion (1212); the rotating shaft portion (1211) is rotatably arranged in the lower pressing die (112); the lower pressing boss (1112) is capable of contacting the fan-shaped portion (1212); and the fan-shaped portion (1212) is capable of further bending the insulating paper (200) on the folding die (113) and pressing out a second fold (202) of the insulating paper (200).

5. The stator insulation paper forming device according to claim 4, characterized in that: The forming member (121) further comprises a protruding portion (1213), wherein the protruding portion (1213) is protrudingly provided on the rotating shaft portion (1211), and the protruding portion (1213) is capable of limiting the insulating paper (200) to be formed.

6. The stator insulation paper forming device according to claim 2, characterized in that: The paper folding mechanism (1) further comprises a pressing assembly (13), wherein the pressing assembly (13) comprises a pressing block (131), wherein the pressing block (131) is arranged on the forming boss (1111) in a liftable manner, and the pressing block (131) is capable of pressing the insulating paper (200) to be formed onto the folding die (113).

7. The stator insulation paper forming device according to claim 6, characterized in that: The pressing block (131) includes a pressing arc surface (1311), and the folding mold (113) is provided with a folding arc surface (1133). The pressing arc surface (1311) and the folding arc surface (1133) press against the insulating paper (200) to be formed from opposite sides.

8. The stator insulation paper forming device according to claim 1, characterized in that: The molded part (121) can be partially stuck in the limiting groove (1131) to limit the rotational travel of the molded part (121).

9. The stator insulation paper forming device according to claim 1, characterized in that: The pushing mechanism (2) comprises a base (21), a storage assembly (22) and a pushing assembly (23), wherein the storage assembly (22) can store stacked insulating paper (200) and press a single sheet of the insulating paper (200) onto the base (21), and the pushing assembly (23) comprises a pushing plate (231), wherein the pushing plate (231) is movably arranged on the base (21) to push the insulating paper (200) into the paper folding mechanism (1).

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