Coating mechanism and coating machine for stator coils

Abstract

The present invention discloses a rubber coating mechanism for a stator coil, which is used for pasting tapes on the inner and outer sides of a hollow coil. Specifically, the rubber coating mechanism includes: a tape traction fixture that clamps and leads out the tape and passes it above the hollow coil; two outer rubber coating assemblies that can press and paste the led-out tape on the left and right outer sides of the hollow coil; and an inner rubber coating assembly that can fold the remaining tape body that is not pasted on the left and right outer sides of the hollow coil towards the inner ring surface of the hollow coil, so that the remaining tape body is pasted on the inner ring surface of the hollow coil. Among them, a blade is provided on the outer rubber coating assembly close to the left outer side of the hollow coil. During rubber coating, the right outer side and the right side of the inner ring surface of the hollow coil are rubber-coated by the right outer rubber coating assembly and the inner rubber coating assembly, then the left end of the led-out tape is cut off by the blade, and the left side and the right side of the inner ring surface of the hollow coil are rubber-coated by the left outer rubber coating assembly and the inner rubber coating assembly.

Description

Technical Field

[0001] The present invention relates to a wire winding and encapsulating mechanism in the motor manufacturing industry, and particularly to an encapsulating mechanism and an encapsulating machine for stator coils. Background Art

[0002] Currently, all the tape wrapping machines on the market can only perform outer encapsulation on stator coils. In the automotive industry, for some motors with specific uses, their coils are directly wound and then placed on the stator. For such hollow coils, it is difficult to wind the tape by means of outer encapsulation. Summary of the Invention

[0003] Aiming at the problems existing in the prior art, the main object of the present invention is to provide an encapsulating mechanism for stator coils, aiming to realize the adhesion of tapes on the inner and outer sides of hollow coils.

[0004] To achieve the above object, the encapsulating mechanism for stator coils proposed by the present invention is used for adhering tapes on the inner and outer sides of the hollow coil body, and includes:

[0005] A tape traction fixture that clamps and leads out the tape passing above the hollow coil;

[0006] Two outer encapsulation components that can press the led-out tape against the left and right outer side surfaces of the hollow coil;

[0007] And an inner encapsulation component that can press and fold the remaining tape body that is not adhered to the left and right outer side surfaces of the hollow coil towards the inner ring surface of the hollow coil, so that the remaining tape body adheres to the inner ring surface of the hollow coil.

[0008] Wherein, a blade is provided on the outer encapsulation component close to the left outer side surface of the hollow coil;

[0009] During encapsulation, the right outer side surface and the right side of the inner ring surface of the hollow coil are encapsulated by the right outer encapsulation component and the inner encapsulation component, then the left end of the led-out tape is cut off by the blade, and the left side surface and the right side of the inner ring surface of the hollow coil are encapsulated by the left outer encapsulation component and the inner encapsulation component.

[0010] Optionally, a first spring is provided on the side of the outer encapsulation component away from the hollow coil;

[0011] When the outer encapsulation component presses the led-out tape against the left and right outer side surfaces of the hollow coil, the first spring can absorb the resistance exerted by the hollow coil on the outer encapsulation component, or apply a force to the outer encapsulation component, so that the outer encapsulation component presses against the tape along the contour of the left and right outer side surfaces of the hollow coil.

[0012] Optionally, the encapsulating mechanism further includes:

[0013] A first driving component for driving the two outer rubber-coated components and a second driving component for driving the inner rubber-coated component;

[0014] The first driving component includes a first driving gear and two first racks arranged along the outer rubber-coating direction. The tooth surfaces of the two first racks face each other and mesh with the first driving gear, and the two outer rubber-coated wheel components are respectively fixedly connected to the two first racks;

[0015] The second driving component includes a second driving gear and a second rack arranged along the inner rubber-coating direction. The second rack meshes with the second driving gear, and the inner rubber-coated wheel component is fixedly connected to the second rack.

[0016] Optionally, the rubber-coating mechanism further includes a third driving component for driving the inner rubber-coated component to press the end portion of the remaining belt that is not adhered to the inner ring surface of the hollow coil against the tape adhered to the left and right outer side surfaces of the hollow coil;

[0017] The third driving component includes a screw arranged along the outer rubber-coating direction. A driving block is provided on the screw and is in threaded cooperation connection with the screw. The inner rubber-coated component is in sliding cooperation connection with the driving block along the inner rubber-coating direction;

[0018] The inner rubber-coated component is in sliding cooperation connection with the second rack along the outer rubber-coating direction.

[0019] Optionally, a first sliding component arranged along the outer rubber-coating direction is provided between the second rack and the inner rubber-coated component. The second rack is fixedly matched with the fixed part in the first sliding component, and the inner rubber-coated component is fixedly matched with the movable part in the first sliding component;

[0020] A second sliding component arranged along the inner rubber-coating direction is provided between the driving block and the inner rubber-coated component. The driving block is fixedly matched with the fixed part in the second sliding component, and the inner rubber-coated component is fixedly matched with the movable part in the second sliding component.

[0021] Optionally, the fixed part in the second sliding component is a guide groove arranged along the inner rubber-coating direction, and the movable part in the second sliding component is a roller. The roller is fixedly connected to the inner rubber-coated component through a rotating shaft, and the roller is engaged in the groove of the guide groove and can roll in the groove of the guide groove.

[0022] Optionally, the fixed part in the second sliding component is in movable cooperation with the driving block through a second spring;

[0023] When the inner rubber-coated component folds the remaining tape body towards the inner ring surface of the hollow coil, the second spring can absorb the resistance exerted by the hollow coil on the inner rubber-coated component, or apply a force to the inner rubber-coated component, so that the inner rubber-coated component presses and adheres to the remaining tape body along the contour of the inner ring surface of the hollow coil.

[0024] The present invention also provides a rubber coating machine, including the rubber coating mechanism of the stator coil as described above.

[0025] Optionally, the rubber coating machine further includes a tape supply component, which includes a tape reel bracket for loading a tape reel, a plurality of guide wheels arranged along the tape supply direction, and a tape outlet.

[0026] The leading end of the tape reel passes through each guide wheel and exits from the tape outlet, and is clamped and led out above the hollow coil by the tape traction fixture.

[0027] Optionally, the rubber coating machine further includes a tape relaxation component, and the tape reel bracket is fixed to the movable part of the tape relaxation component.

[0028] The tape relaxation component drives the tape reel bracket to move in a direction opposite to the feeding direction, so that the tape is pulled and relaxed.

[0029] The rubber coating mechanism and the rubber coating machine provided by the present invention are provided with a tape traction fixture that can lead the tape out above the hollow coil, an outer rubber coating component is arranged above the left and right sides of the hollow coil, an inner rubber coating component is arranged away from the left side of the hollow coil, and a blade with a certain distance from the outer rubber coating component is arranged on the outer rubber coating component above the left side of the hollow coil.

[0030] Before rubber coating, the tape is led out above the hollow coil by the tape traction fixture.

[0031] During rubber coating, first drive the outer rubber coating component above the right side of the hollow coil to move downwards to press and adhere the tape above the right side of the hollow coil to the right outer side surface of the hollow coil, and drive the inner rubber coating component to move leftwards to fold the remaining tape body that is not adhered to the right outer side surface of the hollow coil towards the inner ring surface of the hollow coil, so that the remaining tape body adheres to the inner ring surface of the hollow coil.

[0032] Then, drive the outer rubber coating component and the blade above the left side of the hollow coil to move downwards. After the blade cuts off the led-out tape, the outer rubber coating component presses and adheres the tape above the left side of the hollow coil to the left outer side surface of the hollow coil, and drives the inner rubber coating component to move rightwards to fold the remaining tape body that is not adhered to the left outer side surface of the hollow coil towards the inner ring surface of the hollow coil, so that the remaining tape body adheres to the inner ring surface of the hollow coil.

[0033] In this way, it is possible to adhere the tape to the outer side surface and the inner ring surface of the hollow coil, forming a closed-loop rubber coating winding on the coil body of the hollow coil. Description of the Drawings

[0034] Figure 1 Schematic structural diagram of an embodiment of the encapsulation machine of the present invention;

[0035] Figure 2 Schematic structural diagram of the tape supply part in an embodiment of the encapsulation machine of the present invention;

[0036] Figure 3 Schematic structural diagram of the encapsulation mechanism in an embodiment of the encapsulation machine of the present invention;

[0037] Figure 4 Schematic diagram of the encapsulation process of the encapsulation mechanism in an embodiment of the encapsulation machine of the present invention;

[0038] Figure 5 Schematic diagram of the hollow coil after encapsulation in an embodiment of the encapsulation machine of the present invention;

[0039] Figure 6 Cross-sectional schematic diagram of the encapsulation part of the hollow coil;

[0040] Figure 7 Schematic structural diagram of another embodiment of the encapsulation machine of the present invention;

[0041] Figure 8 Schematic structural diagram of the drive assembly in another embodiment of the encapsulation machine of the present invention;

[0042] Figure 9 Stereoscopic structural diagram of the first drive assembly;

[0043] Figure 10 Schematic structural diagram of the third drive assembly in yet another embodiment of the encapsulation machine of the present invention;

[0044] Figure 11 Left stereoscopic schematic diagram of the third drive assembly;

[0045] Figure 12 Right stereoscopic schematic diagram of the third drive assembly;

[0046] Figure 13 Schematic diagram of the encapsulation process of the encapsulation mechanism in yet another embodiment of the encapsulation machine of the present invention;

[0047] Figure 14 Schematic diagram of the hollow coil after encapsulation in yet another embodiment of the encapsulation machine of the present invention. Detailed implementation manners

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0049] Embodiment 1

[0050] In an embodiment of the present invention, a rubber coating machine is proposed, which is used to paste a tape 7 on the outer surface (hereinafter referred to as the outer side surface) and the inner ring surface (hereinafter referred to as the inner ring surface) of a hollow coil 6 wound by a wire, so that the tape 7 winds around the body of the hollow coil 6 at least once.

[0051] For the convenience of understanding, it is first set here that the X-axis extends roughly in the horizontal left-right direction, the Y-axis extends roughly in the vertical up-down direction, and the X-axis and the Y-axis are perpendicular to each other.

[0052] Since the main improvement of the present invention lies in the rubber coating part of the hollow coil 6, only the action mechanisms related to rubber coating are shown in the accompanying drawings of the specification. At the same time, the screw hole positions, curved surfaces, protrusions, grooves and other structures on each action mechanism are simplified to a certain extent to avoid excessive lines in the drawings, but it does not affect the understanding of the action mechanisms.

[0053] As Figure 1 shown, the rubber coating machine includes a mounting plate 1, on which a rubber coating mechanism 2 is provided, and a tape supply assembly 3 arranged on the periphery of the rubber coating mechanism 2. There is a moving mechanism (not shown) below the rubber coating mechanism 2, and a fixture (not shown) is provided on the moving mechanism. The hollow coil 6 to be rubber coated is clamped below the rubber coating mechanism 2 by the fixture.

[0054] As Figure 2 shown, the tape supply assembly 3 includes a tape reel bracket 31, two guide wheels (32, 33) and a tape outlet 34 arranged in sequence along the tape supply direction. The tape reel bracket 31 is arranged on the upper side of the mounting plate 1, and the tape reel is placed on the tape reel bracket 31. The two guide wheels (32, 33) are arranged on the left side of the mounting plate 1. Guide blocks (35, 36) are respectively arranged between the two guide wheels (32, 33) and between the guide wheel 33 and the tape outlet 34. The guide blocks (35, 36) have guide grooves for the tape to pass through. The tape end of the tape reel passes through the guide wheel 32, the guide block 35, the guide wheel 33, the guide block 36 in sequence, and then passes out from the tape outlet 34 to supply the tape to the rubber coating mechanism 2.

[0055] The rubber coating mechanism 2 includes a tape traction fixture 21, two outer rubber coating assemblies (22a, 22b) and an inner rubber coating assembly 23.

[0056] The tape traction fixture 21 is a micro pneumatic finger, which is arranged opposite to the tape outlet 34 and can clamp the tape end of the tape roll and lead it out to the right along the X axis. To realize the tape leading action of the tape traction fixture 21, a linear cylinder 211 with a telescopic rod is arranged behind the mounting plate 1, and the tape traction fixture 21 is arranged at the free end of the telescopic rod. When the tape traction fixture 21 clamps the tape, the tape traction fixture 21 can be driven by the linear cylinder 211 to move to the right to lead out the tape. A linear module 212 is also arranged behind the mounting plate 1, and the telescopic rod and the tape traction fixture 21 are fixed on the slider part of the linear module 212 to guide the movement of the tape traction fixture 21 and keep it stable during the movement.

[0057] As Figure 3 shown, two outer rubber coating components (22, 23) are respectively arranged above the left and right outer sides of the hollow coil 6. The outer rubber coating components (22, 23) include a linear module (221, 231) and a mounting arm (222, 232). The guide rail parts of the linear modules (221, 231) are fixed on the mounting plate 1. The upper ends of the mounting arms (222, 232) are arranged on the slider parts of the linear modules (221, 231), and their lower ends have extension arms (222a, 232a) extending along the Y axis to lead out the tape, and the ends of the extension arms (222a, 232a) have rubber coating wheels (223, 233).

[0058] In addition, a blade is arranged on the left side of the outer rubber coating component 22, and the blade is fixedly connected through a connecting piece mounting arm 222 not shown in the figure to act synchronously with the outer rubber coating component.

[0059] As Figure 3 shown, the inner rubber coating component 24 is located on the right side of the hollow coil 6, and it includes two linear modules (241, 242) and a mounting arm 243. The guide rail parts of the two linear modules (241, 242) are fixed on the mounting plate 1, and the slider parts of the two linear modules (241, 242) are connected together through a connecting plate 244. The upper end of the mounting arm 243 is arranged on the connecting plate 244, and the lower end of the mounting arm 243 has an extension arm 243a extending along the X axis to the inner ring of the hollow coil 6, and the end of the extension arm 243a has a rubber coating wheel 245.

[0060] Before rubber coating, the tape traction fixture 21 is driven by the linear cylinder 211 to lead out the tape above the hollow coil 6.

[0061] During rubber coating, as Figure 4 (1) and Figure 4As shown in

[0062] , first, a driving component (not shown) drives the rubber-coated wheel 233 above the right side of the hollow coil 6 to move downward to press the tape 7a above the right side of the hollow coil 6 against the right outer side surface of the hollow coil 6. Another driving component (not shown) drives the rubber-coated wheel 245 to move leftward and penetrate into the inner ring of the hollow coil 6, folding the remaining tape body that is not adhered to the right outer side surface of the hollow coil 6 toward the inner ring surface of the hollow coil 6, so that the remaining tape body is adhered to the inner ring surface of the hollow coil 6.

[0062] Then, as shown in Figure 4 (3) and Figure 4 (4), a driving component (not shown) drives the rubber-coated wheel 223 above the left side of the hollow coil 6 to move downward to press the tape 7b above the left side of the hollow coil 6 against the left outer side surface of the hollow coil 6. Another driving component (not shown) drives the rubber-coated wheel 245 to move rightward to fold the remaining tape body that is not adhered to the left outer side surface of the hollow coil 6 toward the inner ring surface of the hollow coil 6, so that the remaining tape body is adhered to the inner ring surface of the hollow coil 6.

[0063] In this way, it is possible to adhere the tape to the outer side surface and the inner ring surface of the hollow coil 6, forming a closed-loop rubber coating winding around the body of the hollow coil 6.

[0064] As shown in Figure 5 , in this embodiment, the length of the tape drawn out can be controlled so that the length of the drawn-out tape is greater than the circumference of the body of the hollow coil 6, so that the tape adhered to the inner side surface of the hollow coil 6 partially or completely overlaps, ensuring the winding effect of the tape.

[0065] Generally, the outer contour of the body of the hollow coil 6 wound by wire has a certain outward convexity or concavity. For example, as shown in Figure 6 (1), the wire on the left outer side surface of the hollow coil 6 protrudes outward. When the rubber-coated wheel 223 presses the tape 7b, it moves in a straight line. Therefore, when the rubber-coated wheel 223 passes through this part of the wire, the wire will exert a resistance on the movement of the rubber-coated wheel. Since both the rubber-coated wheel 223 and the hollow coil 6 are stationary in the horizontal direction, a rigid extrusion will occur, and the force generated by this extrusion acting on the hollow coil 6 can easily disperse the hollow coil 6. Especially for the hollow coil 6 wound by thin wire diameter, it can withstand small external pressure and is easily dispersed.

[0066] Also, as shown in Figure 6 (2), a part of the wire on the right outer side surface of the hollow coil 6 is recessed as a whole, which easily causes the tape 7a not to be pressed against the hollow coil 6, resulting in the problem of poor tape adhesion.

[0067] Therefore, preferably, as shown in Figure 1 ​As shown, in this embodiment, a first spring (224, 234) is provided on the side of the outer rubber component (22, 23) away from the hollow coil 6. Specifically, a fixing plate (225, 235) is provided on the slider part of the linear module (221, 231). The mounting arms (222, 232) are provided on the fixing plate (225, 235), and the fixing plate (225, 235) has a baffle (225a, 235a) disposed opposite to the outer side wall of the mounting arms (222, 232). The first spring (224, 234) is disposed between the mounting arms (222, 232) and the baffle (225a, 235a). Also, a linear module (226, 236) is provided on the fixing plate (225, 235), and the upper middle part of the mounting arms (222, 232) is fixed to the slider part of the linear module (226, 236).

[0068] Thus, when the rubber-coated wheels (223, 233) press the drawn tape 7 against the left and right outer sides of the hollow coil 6, the rubber-coated wheels (223, 233) can move outward horizontally relative to the hollow coil 6. The first spring (224, 234) absorbs the resistance exerted by the hollow coil 6 on the outer rubber component (22, 23), or applies a force to the outer rubber component (22, 23), so that the outer rubber component (22, 23) presses against the tape 7 along the contour of the left and right outer sides of the hollow coil 6, enabling the tape 7 to be effectively adhered to the hollow coil 6 and preventing the hollow coil 6 from being pushed apart.

[0069] Preferably, as Figure 2 shown, a tape relaxation assembly 4 is provided on the upper side of the mounting plate 1. Before the tape traction fixture 21 pulls the traction tape 7, it can relax the tape on the outermost circle of the tape roll, reduce the resistance of the tape roll 7 drawn by the tape traction fixture 21, and prevent the tape 7 from detaching from the tape traction fixture 21 during the drawing process, resulting in the problem that the tape 7 cannot be normally drawn.

[0070] Specifically, the tape relaxation assembly 4 includes a linear module 41 arranged along the X-axis and a linear cylinder 42 arranged along the X-axis. The linear module 41 is fixed to the front side of the mounting plate 1, and the tape roll bracket 31 is fixed to the slider part of the linear module 41. The linear cylinder 42 is fixed to the upper side of the mounting plate 1, and the free end of its telescopic rod is fixed to the tape roll bracket 31. The linear cylinder 41 can drive the tape roll bracket 31 to move to the right, and the tape roll moves in the opposite direction to the supply direction. The tape on the side of the tape supply assembly 3 is relatively tightened between the tension pulley 32 and the tape roll, causing the tape roll to rotate clockwise to unwind, so that the tape on the outermost circle of the tape roll is relaxed, facilitating the subsequent tape traction fixture to draw the tape.

[0071] To fix the tape on the tape supply assembly 3 when the tape relaxation assembly 4 drives the tape roll to move rightward, as Figure 2As shown, a tape clamping assembly 5 is further provided in the tape supply direction to clamp and fix the tape when the tape roll is relaxed. Specifically, the tape clamping assembly 5 is arranged between the guide wheel 32 and the guide block 35, and includes a clamping cylinder 51 and a tape passing wheel 52 arranged on the opposite side of the push head of the clamping cylinder 5. When the tape roll is relaxed, the push head of the clamping cylinder 51 can be driven to move towards the tape passing wheel 52 to clamp the tape.

[0072] Preferably, as Figure 2 shown, pressing plates (37, 38, 39) are provided on the opposite sides of the guide blocks (35, 36). The pressing plates (35, 36) are arranged at an obtuse angle to the tape supply direction. One side of the pressing plates is rotatably arranged, and the other end presses against the back of the first tape. And the rotatable side of the pressing plates (37, 38, 39) has limiting plates (371, 381, 391). A torsion spring (not shown) is provided between the pressing plates (37, 38, 39) and the limiting plates (37, 38, 39). Under normal conditions, the elastic force of the torsion spring acts on the pressing plates (37, 38, 39), so that the other end of the pressing plates (37, 38, 39) presses against the tape on the guide blocks (35, 36). Thus, when the blade 227 cuts the tape led out from the tape outlet 34, the pressing plates (37, 38, 39) can press the tape to prevent the tape from rebounding.

[0073] Embodiment 2

[0074] Based on Embodiment 1, this embodiment provides a reasonable and efficient driving assembly to drive the outer rubber coating assemblies (22, 23) and the inner rubber coating assembly 24. Specifically, as Figures 7 - 8 shown, the driving assembly includes a first driving assembly 25 that can drive the two outer rubber coating assemblies (22, 23) and a second driving assembly 26 that drives the inner rubber coating assembly 24.

[0075] Among them, the first driving assembly 25 includes a first driving gear 251, two first racks (252, 253) arranged along the Y-axis direction, and a first servo motor (not shown). The tooth surfaces of the two first racks (252, 253) face each other and mesh with the first driving gear 251, and the two first racks (252, 253) are respectively fixed on the fixing plates (225, 235) of the outer rubber coating wheel assemblies (22, 23). The first servo motor is used to drive the first driving gear 251 to drive the two first racks (252, 253) to move towards or away from each other along the Y-axis direction. Specifically, when the first servo motor drives the first driving gear 251 to rotate clockwise, it can drive the first rack 253 to move downward, while the first rack 252 moves upward. Then, the outer rubber coating wheel 233 is driven by the first rack 253 to move downward for outer rubber coating on the right outer side of the hollow coil 6. When the first servo motor drives the first driving gear 251 to rotate counterclockwise, it can drive the outer rubber coating wheel 223 to move downward for outer rubber coating on the right outer side of the hollow coil 6 by driving the first rack 252 to move downward.

[0076] The second driving assembly 26 includes a second driving gear 261, a second rack 262 arranged along the X-axis direction, and a second servo motor (not shown). The second rack 262 meshes with the second driving gear 261 and is fixed on the connecting plate 244 of the inner rubber-coated wheel assembly 24. The second servo motor is used to drive the second driving gear 261 to drive the second rack 262 to move back and forth along the X-axis direction, and then drive the rubber-coated wheel 245 of the inner rubber-coated wheel assembly 24 to penetrate into and out of the inner ring of the hollow coil 6 for rubber coating on the inner ring surface of the hollow coil 6.

[0077] In this embodiment, by adopting servo motor drive and gear-rack meshing transmission, the speed is fast, and it is convenient to control the moving stroke of the rubber-coated wheels (223, 233, 245) as needed to adapt to hollow coils 6 with different thicknesses of coils. Moreover, the first driving assembly 25 adopts two oppositely arranged first racks (252, 253) and a first driving gear 251 for meshing transmission, which can realize driving the rubber-coated wheels (223, 233) to move downward for rubber coating respectively in different rubber coating links by one servo motor, so as to facilitate the miniaturization of the rubber coating mechanism.

[0078] Preferably, as Figure 9 shown, the first servo motor and the first driving gear 251 are meshed and driven by two orthogonal bevel gears (254, 255), so that the first servo motor can be installed along the Y-axis, making the rubber coating mechanism more compact.

[0079] Embodiment 3

[0080] On the basis of Embodiment 2, the driving assembly is further improved so that the driving assembly can move the inner rubber coating assembly up and down along the Y-axis direction. As Figure 10 shown, a third driving assembly 27 is added which is movably and cooperatively connected with the inner rubber coating assembly 24. The third driving assembly 27 includes a screw rod 271 arranged along the Y-axis direction and a third servo motor (not shown). A driving block 2711 is arranged on the screw rod 271 and is in threaded engagement with the screw rod 271. The third servo motor is coaxially and drivingly connected with the screw rod 271 and is used to drive the screw rod 271 to drive the driving block 2711 to move up and down along the Y-axis direction.

[0081] The driving block 271 and the inner rubber coating assembly 24 are movably and cooperatively connected through a sliding assembly 272. The sliding assembly has a fixing member 2721 arranged along the X-axis direction and a movable member 2722 that can move left and right along the X-axis on the fixing member. The fixing member 2721 is connected to the driving block, and the movable member 2722 is connected to the mounting arm 243 of the inner rubber coating assembly.

[0082] To ensure the smoothness of the up and down movement of the driving block 2711, as Figure 11As shown, the third driving component 27 further includes an outer plate 273. The outer plate 273 is fixed on the mounting plate 1 through the mounting bracket 274 of the third servo motor. A linear module 275 is provided on the outer plate 273. The guide rail part of the linear module 275 is fixed on the inner side surface of the outer plate 273, and the driving block 2711 is fixed on the slider part of the linear module 275.

[0083] Before encapsulation, control the linear cylinder 211 to drive the tape traction fixture 21 to draw out a certain length of the tape 7, so that after the left and right strip bodies (7a, 7b) of the tape 7 are pressed against the inner ring surface of the hollow coil 6, there is still a strip end part that is not adhered to the inner ring surface of the hollow coil 6.

[0084] During encapsulation, use the encapsulation sequence shown in Figure 13 (1)-(6) to press the tape against the outer side surface and the inner ring surface of the hollow coil 6. The encapsulated hollow coil is as shown in Figure 14 . Among them, as shown in Figure 13 (3) and Figure 13 (6), after the remaining strip body is adhered to the inner ring surface of the hollow coil 6, drive the encapsulation wheel 245 of the inner encapsulation component 24 to move upward along the Y-axis through the third driving component 27, and press the strip end part of the remaining strip body against the left and right outer side surfaces of the hollow coil 6, so that the adhesive part of the tape forms an inner and outer enclosure and will not come off. As shown in Figure 13 (4), when the encapsulation wheel 223 moves downward, drive the encapsulation wheel 245 to move left and downward through the second driving component 26 and the third driving component 27 to avoid the tape 7b pressed by the encapsulation wheel 223.

[0085] In addition, as shown in Figure 11 , a linear module 246 arranged along the Y-axis is provided on the connecting plate 244 of the inner encapsulation component 24. The guide rail part of the linear module 246 is fixed on the connecting plate 244, and the mounting arm 243 of the inner encapsulation component 24 is fixed on the slider part of the linear module 246. Thus, the inner encapsulation component 24 is in sliding fit with the second rack fixed on the connecting plate 244 along the Y-axis direction. In this way, when the third driving component 27 drives the inner encapsulation component 24 to move up and down along the Y-axis, it will not interfere with the second driving component 26.

[0086] Preferably, the fixing part 2721 in the sliding component 272 adopts a guide groove arranged along the X-axis direction, and the moving part 2722 in the sliding component 272 adopts a roller. The roller is fixed on the mounting arm 243 of the inner encapsulation component 24 through a rotating shaft, and the roller is engaged in the groove of the guide groove and can roll in the groove of the guide groove. Thus, the driving block 2711 and the inner encapsulation component 24 are in sliding fit along the X-axis direction, avoiding interference between the second driving component 26 driving the inner encapsulation component 24 and the third driving component 27; and the structure is simple and easy to implement.

[0087] Further, as Figures 11 - 12 shown, the guide groove is movably engaged with the driving block 2711 through a second spring 276. Specifically, on one side of the slider part of the linear module 275, another linear module 277 is provided. The guide rail part of the linear module 277 is fixed on the slider part of the linear module 275, and the guide groove is connected to the sliding part of the linear module 277 through a connecting plate 278. At the same time, a convex block 279 opposite to the upper groove wall of the guide groove is provided on the slider part of the linear module 275, and the second spring 276 is arranged between the convex block 279 and the guide groove.

[0088] Thus, when the rubber covering wheel 245 of the inner rubber covering assembly 24 presses the remaining tape body of the tape 7 against the inner ring surface of the hollow coil 6, the second spring 276 can absorb the resistance exerted by the hollow coil 6 on the inner rubber covering assembly 24, or apply a force to the inner rubber covering assembly, so that the rubber covering wheel 245 of the inner rubber covering assembly presses the remaining tape body along the contour of the inner ring surface of the hollow coil 6, enabling the remaining tape body to be effectively adhered to the hollow coil 6 and avoiding pushing the hollow coil 6 apart.

[0089] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any minor modifications, equivalent replacements, and improvements made to the above embodiments based on the technical essence of the present invention shall be included within the protection scope of the technical solution of the present invention.

Claims

1. A rubber coating mechanism for a stator coil, which is used to stick tapes to the inner and outer sides of a hollow coil body, and is characterized in that Comprising: A tape traction fixture for clamping and leading out the tape above the hollow coil; Two outer tape wrapping components for pressing the led-out tape against the left and right outer side surfaces of the hollow coil; And an inner tape wrapping component for folding the remaining tape body that is not adhered to the left and right outer side surfaces of the hollow coil towards the inner ring surface of the hollow coil, so that the remaining tape body is adhered to the inner ring surface of the hollow coil; Wherein, a blade is provided on the outer tape wrapping component close to the left outer side surface of the hollow coil; During tape wrapping, the right outer side surface and the right side of the inner ring surface of the hollow coil are tape-wrapped by the right outer tape wrapping component and the inner tape wrapping component, then the left end of the led-out tape is cut off by the blade, and the left side surface and the right side of the inner ring surface of the hollow coil are tape-wrapped by the left outer tape wrapping component and the inner tape wrapping component; A first spring is provided on the side of the outer tape wrapping component away from the hollow coil; When the outer tape wrapping component presses the led-out tape against the left and right outer side surfaces of the hollow coil, the first spring absorbs the resistance applied by the hollow coil to the outer tape wrapping component, or applies a force to the outer tape wrapping component, so that the outer tape wrapping component presses against the tape along the contour of the left and right outer side surfaces of the hollow coil; The tape wrapping mechanism of the stator coil further comprises: A first driving component for driving the two outer tape wrapping components and a second driving component for driving the inner tape wrapping component; The first driving component includes a first driving gear and two first racks arranged along the outer tape wrapping direction. The tooth surfaces of the two first racks face each other and mesh with the first driving gear, and the two outer tape wrapping wheel components are respectively fixedly connected to the two first racks; The second driving component includes a second driving gear and a second rack arranged along the inner tape wrapping direction. The second rack meshes with the second driving gear, and the inner tape wrapping wheel component is fixedly connected to the second rack; The tape wrapping mechanism of the stator coil further comprises: A third driving component for driving the inner tape wrapping component to press the tape end portion of the remaining tape body that is not adhered to the inner ring surface of the hollow coil against the tape adhered to the left and right outer side surfaces of the hollow coil; The third driving component includes a screw arranged along the outer tape wrapping direction. A driving block is provided on the screw and is in threaded cooperation connection with the screw. The inner tape wrapping component is in sliding fit connection with the driving block along the inner tape wrapping direction; The inner tape wrapping component is in sliding fit connection with the second rack along the outer tape wrapping direction; A first sliding component arranged along the outer tape wrapping direction is provided between the second rack and the inner tape wrapping component. The second rack is fixedly fitted with the fixed part in the first sliding component, and the inner tape wrapping component is fixedly fitted with the movable part in the first sliding component; A second sliding component arranged along the inner tape wrapping direction is provided between the driving block and the inner tape wrapping component. The driving block is fixedly fitted with the fixed part in the second sliding component, and the inner tape wrapping component is fixedly fitted with the movable part in the second sliding component; The fixed part in the second sliding component is a guide groove arranged along the direction of inner encapsulation rubber, the movable part in the second sliding component is a roller, the roller is fixedly connected to the inner encapsulation rubber component through a rotating shaft, and the roller is engaged in the groove of the guide groove and can roll in the groove of the guide groove; The fixed part in the second sliding component is movably matched with the driving block through a second spring; When the inner encapsulation rubber component folds the remaining tape body towards the inner ring surface of the hollow coil, the second spring absorbs the resistance applied by the hollow coil to the inner encapsulation rubber component, or applies a force to the inner encapsulation rubber component to make the inner encapsulation rubber component press and stick to the remaining tape body along the contour of the inner ring surface of the hollow coil.

2. A rubber coating machine, characterized in that, It includes an encapsulation mechanism for the stator coil as described in claim 1; It includes a tape reel bracket for loading a tape reel, a plurality of guide wheels arranged along the tape supply direction, and a tape outlet; The leading end of the tape reel passes through each guide wheel and exits from the tape outlet, is clamped by the tape traction fixture and led to the upper part of the hollow coil; It further includes a tape relaxation component, and the tape reel bracket is fixed to the movable part of the tape relaxation component; The tape reel bracket is driven by the tape relaxation component to move in the direction opposite to the feeding direction, so that the tape is pulled and relaxed.

Images