Wire straightening mechanism

Abstract

The utility model belongs to the technical field of motor winding manufacturing, and discloses a wire straightening mechanism. The wire straightening mechanism comprises a horizontal straightening assembly and a vertical straightening assembly, the horizontal straightening assembly and the vertical straightening assembly are perpendicularly distributed and are identical in structure, straightening lines of the horizontal straightening assembly and the vertical straightening assembly are on the same straight line, each of the horizontal straightening assembly and the vertical straightening assembly comprises a base and a plurality of rollers rotationally arranged on the base, and the rollers are arranged in a double-row staggered mode. A wire rod can penetrate through the two rows of rollers, and the distance between the axis of each roller and the wire rod is gradually reduced in the conveying direction of the wire rod. According to the wire straightening mechanism, more uniform straightening force distribution can be achieved, local deformation of wires is gradually eliminated, stress concentration and extrusion damage are reduced, and therefore the straightening effect and the quality of the wires are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor winding manufacturing technical field especially relates to a wire straightening mechanism. BACKGROUND

[0002] With the development of motor technology, the power density and efficiency requirements of motor are continuously improved, and disc motor gradually becomes the first choice of many high-performance motors because of its compact structure and superior heat dissipation performance. The stator and rotor of disc motor usually adopt multi-layer winding form, and in order to improve the filling factor of winding, square cross-section wire is widely used because of its high space utilization and excellent electrical performance.

[0003] In the manufacturing process of disc motor winding, the straightening process of wire is an important link. Before winding, the wire is usually pulled out from a large wire reel, transported and stored through multiple processes, and the wire may be bent or deformed to different degrees, especially for square cross-section wire, which will seriously affect the tightness and neatness of subsequent winding. In order to ensure the accuracy and electrical performance of winding, the wire must be straightened before winding.

[0004] The straightening mechanism used in the market at present adopts a pair of roller structure, if the wire has local bending or twisting, the pair of rollers may apply pressure at the same time, resulting in uneven straightening effect, and if the wire surface has irregular points or protruding parts, the pair of roller structure may cause stress concentration, resulting in excessive local stress, and even may cause surface damage or deformation of the wire.

[0005] Therefore, it is urgent to provide a wire straightening mechanism to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a wire straightening mechanism, which can realize more uniform straightening force distribution, gradually eliminate local deformation of the wire, reduce stress concentration and extrusion damage, thereby improving the straightening effect and the quality of the wire.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The wire straightening mechanism comprises a horizontal straightening assembly and a vertical straightening assembly which are perpendicular to each other, have the same structure and have straightening lines on a straight line, the horizontal straightening assembly and the vertical straightening assembly each comprise a base and a plurality of rollers rotatably arranged on the base, the plurality of rollers are arranged in double rows in a staggered manner, the wire can pass between the two rows of rollers, and the distance between the axis of each roller and the wire gradually decreases along the conveying direction of the wire.

[0009] As an optional solution, each of the rollers is arranged on the base in a position-adjustable manner through a position adjusting assembly in a direction perpendicular to the conveying direction of the wire.

[0010] As an optional solution, the base comprises a bottom plate and a frame buckled on the bottom plate, and the frame is provided with a sliding groove extending in a direction perpendicular to the conveying direction of the wire.

[0011] The position adjusting assembly comprises a sliding block, a push piece and a spring, the sliding block is slidably arranged in the sliding groove, the sliding block is provided with an axle hole, a rotating shaft is installed in the axle hole, the free end of the rotating shaft extends above the frame and is provided with the roller in a rotating manner, one side surface of the frame is provided with a through hole communicating with the sliding groove, the push piece penetrates through the through hole and abuts against one end of the sliding block, and the spring abuts against the other end of the sliding block and the end wall of the sliding groove, and the push piece can push the sliding block to move along the sliding groove.

[0012] As an optional solution, the through hole is a light hole, the push piece is a bolt, the bolt is slidably connected in the light hole, and the position adjusting assembly further comprises two nuts, the two nuts are threadedly connected to the bolt and respectively located at opposite ends of the through hole.

[0013] As an optional solution, the through hole is a threaded hole, and the push piece is a bolt, which is threadedly connected in the threaded hole.

[0014] As an optional solution, the bolt is a butterfly bolt.

[0015] As an optional solution, one end of the frame away from the through hole is provided with a sliding hole extending in a direction perpendicular to the conveying direction of the wire and communicating with the sliding groove, and the position adjusting assembly further comprises a guide rod, the guide rod penetrates through the spring, one end of the guide rod is connected with the sliding block, and the other end of the guide rod is slidably matched with the sliding hole.

[0016] As an optional solution, the sliding block is provided with a jackscrew hole, and the position adjusting assembly further comprises a jackscrew, which is threadedly connected in the jackscrew hole and can be matched with the bottom plate.

[0017] As an optional solution, the sliding block is in a stepped structure and has a stepped surface, the upper end of the sliding block penetrates through the sliding groove, and the stepped surface abuts against the lower surface of the frame.

[0018] As an optional solution, the wire straightening mechanism further comprises a pair of supporting rollers arranged in an opposite manner in an up-down direction between the horizontal straightening assembly and the vertical straightening assembly, and the wire can pass between the two supporting rollers.

[0019] The utility model discloses a beneficial effect:

[0020] The utility model provides a wire rod straightening mechanism, a plurality of rollers are staggered and set up in double rows, and the distance between the shaft center of each roller and wire rod gradually reduces along the conveying direction of wire rod. The roller that this distance gradually changes and is staggered can gradually exert straightening force, when wire rod passes the first roller, mainly corrects the bending or unevenness of one side of wire rod, when wire rod continues to advance to the next roller, the bending or unevenness of the other side is corrected, and the straightening process of the stage can more accurately eliminate local deformation, can better cope with the straightening demand of larger amplitude bending or complex shape, makes the straightening effect more uniform, and because each roller only exerts straightening force to the single side of wire rod, therefore the roller that this staggered sets up can more evenly disperse stress, reduces local stress concentration phenomenon, like this not only protects wire rod surface, can improve the stability of integral straightening. Therefore, the utility model provides a wire rod straightening mechanism can realize more uniform straightening force distribution, gradually eliminates local deformation of wire rod, reduces stress concentration and extrusion damage, thereby improves straightening effect and the quality of wire rod. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of the utility model provides wire rod straightening mechanism;

[0022] Figure 2 It is the structure schematic diagram of the utility model provides horizontal straightening subassembly;

[0023] Figure 3 It is the explosion drawing of the utility model provides horizontal straightening subassembly;

[0024] Figure 4 It is the section view of the utility model provides horizontal straightening subassembly.

[0025] In the drawing:

[0026] 10, horizontal straightening subassembly; 11, base; 111, bottom plate; 112, frame; 1121, sliding slot; 1122, through -hole; 1123, sliding hole; 12, roller; 13, position adjustment subassembly; 131, sliding block; 1311, shaft hole; 1312, jackscrew hole; 1313, step surface; 132, push top piece; 133, spring; 134, nut; 135, guide rod; 136, jackscrew; 14, rotating shaft;

[0027] 20, vertical straightening subassembly;

[0028] 30, support roller;

[0029] 40, wire rod. DETAILED DESCRIPTION

[0030] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0031] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] In the description of the embodiment, the terms "up", "down", "right", etc. Orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0034] The embodiment provides a wire straightening mechanism, which is particularly suitable for square cross-section wire 40. Figure 1As shown, the wire straightening mechanism includes a horizontal straightening assembly 10 and a vertical straightening assembly 20 which are perpendicular to each other, have the same structure and straighten the wire in a straight line. The wire 40 passes through the horizontal straightening assembly 10 and the vertical straightening assembly 20 in sequence. The horizontal straightening assembly 10 is horizontally arranged and used to straighten the bending and deformation of the wire 40 in the horizontal direction. The downstream vertical straightening assembly 20 is vertically arranged and used to straighten the bending and deformation of the wire 40 in the vertical direction, so that the wire 40 with a square cross-section can be completely and effectively straightened. For ease of understanding, the conveying direction of the wire 40 is defined as the X-axis direction in the figure, and the Y-axis direction is perpendicular to the conveying direction of the wire 40.

[0035] Specifically, as shown in the figure, Figure 2 The horizontal straightening assembly 10 includes a base 11 and a plurality of rollers 12 rotatably arranged on the base 11. The plurality of rollers 12 are arranged in double rows in a staggered manner. The wire 40 can pass between the two rows of rollers 12 and be in contact with each roller 12. In the conveying direction of the wire 40, the horizontal distance between the axis of each roller 12 and the wire 40 gradually decreases to a standard distance. That is, the straightening process of the wire 40 is gradually completed.

[0036] Compared with the common pair of rollers structure in the prior art, the rollers 12 in the embodiment are arranged in a staggered manner and have a gradually changing distance. When straightening the wire 40, the following advantages are achieved. First, the rollers 12 arranged in a staggered manner and having a gradually changing distance can gradually apply a straightening force. When the wire 40 passes through the first roller 12, the bending or unevenness on one side of the wire 40 is mainly corrected. When the wire 40 continues to advance to the next roller 12, the bending or unevenness on the other side is corrected. The phased straightening process can more accurately eliminate local deformation and better cope with the straightening requirements of large amplitude bending or complex shapes, so that the straightening effect is more uniform. Second, since each roller 12 only applies a straightening force to a single side of the wire 40, the rollers 12 arranged in a staggered manner can more evenly distribute stress and reduce local stress concentration. In this way, the surface of the wire 40 is protected, and the stability of the overall straightening is improved. Therefore, the wire straightening mechanism provided by the embodiment can achieve more uniform distribution of straightening force, gradually eliminate local deformation of the wire 40, reduce stress concentration and extrusion damage, thereby improving the straightening effect and the quality of the wire 40.

[0037] In the prior art, the rollers 12 are usually fixed on the base 11, which is difficult to adapt to wires 40 of different sizes and shapes, especially when different specifications of wires 40 need to be frequently replaced in production, which lacks flexibility.

[0038] To solve the above problems, as shown in the figure, Figure 2As shown, each roller 12 is adjustably arranged on the base 11 by a position adjusting assembly 13 in a direction perpendicular to the conveying direction of the wire rod 40 (Y-axis direction). By adjusting the position adjusting assembly 13, the position of each roller 12 can be adjusted to achieve straightening processing of wire rods 40 of different sizes.

[0039] In the prior art, in order to adapt to different wire diameters and meet certain straightening accuracy requirements, each roller 12 in some straightening mechanisms needs to be manually adjusted, which increases the operation difficulty and time cost and reduces the production efficiency.

[0040] To solve the above problems, in the embodiment, as shown in the drawings, Figures 2 to 4 The base 11 includes a bottom plate 111 and a frame 112 buckled on the bottom plate 111, and the two are connected by screws, and the frame 112 is provided with a sliding groove 1121 extending in a direction perpendicular to the conveying direction of the wire rod 40. The position adjusting assembly 13 includes a sliding block 131, a push piece 132 and a spring 133. The sliding block 131 is slidably arranged in the sliding groove 1121, and the sliding block 131 is provided with an axle hole 1311, and a rotating shaft 14 is installed in the axle hole 1311. The free end of the rotating shaft 14 extends above the frame 112 and is rotatably provided with the roller 12. One side surface of the frame 112 is provided with a through hole 1122 communicating with the sliding groove 1121. The push piece 132 penetrates the through hole 1122 and abuts against one end of the sliding block 131. The spring 133 abuts against the other end of the sliding block 131 and the end wall of the sliding groove 1121. The push piece 132 can push the sliding block 131 to move along the sliding groove 1121.

[0041] When the position of the roller 12 needs to be adjusted, the sliding block 131 is moved along the Y-axis direction by the push piece 132, so that when the roller 12 is moved by the sliding block 131, the distance between the roller 12 and the wire rod 40 can be adjusted. The spring 133 on the other side of the sliding block 131 applies a reverse tension spring force to the sliding block 131, so that the sliding block 131 can be finely adjusted very conveniently, and at any adjustment position, the sliding block 131 can be kept at the current position, so that the roller 12 and the wire rod 40 to be straightened can be kept at a suitable fit degree, avoiding that the roller 12 and the wire rod 40 are too tight or too loose. By adjusting the position of the roller 12 by the above structure, not only the operation is convenient and fast, but also sufficient accuracy can be obtained, and the adaptation and compatibility of wire rods 40 of different sizes can be achieved.

[0042] In an optional embodiment, as shown in the drawings, Figures 2 to 4As shown, the through hole 1122 is a light hole, and the push piece 132 is a bolt which is slidingly connected in the light hole. The position adjusting assembly 13 further comprises two nuts 134 which are threadedly connected to the bolt and respectively located at opposite ends of the through hole 1122. When it is needed to adjust the position of the roller 12, the two nuts 134 are loosened so that the push piece 132 can freely move in the through hole 1122, and the sliding block 131 is moved along the Y axis direction by the push piece 132. After the adjustment is completed, the two nuts 134 are locked simultaneously so as to fix the push piece 132 on the frame 112, and thus the sliding block 131 can be kept at any adjusted position.

[0043] In another alternative embodiment, the through hole 1122 can be a threaded hole, and the push piece 132 is a bolt which is threadedly connected in the threaded hole. In this way, the sliding block 131 can be directly moved by screwing the push piece 132, and the push piece 132 can be kept at any adjusted position of the sliding block 131.

[0044] In an alternative embodiment, as shown in Figs. 6 and 7, the push piece 132 is a butterfly bolt. Figure 3 By using the butterfly bolt, the manual operation of the operator is facilitated, and the butterfly bolt is manually screwed in or out when the adjustment is needed, which reduces the dependence on tools and saves time and effort.

[0045] In an alternative embodiment, as shown in Figs. 8 and 9, the push piece 132 is a butterfly bolt. Figure 3 Figure 4 As shown, the frame 112 is provided with a sliding hole 1123 which extends along a direction perpendicular to the conveying direction of the wire rod 40 and communicates with the sliding groove 1121. The position adjusting assembly 13 further comprises a guide rod 135 which is arranged in the spring 133, one end of the guide rod 135 is connected with the sliding block 131, and the other end of the guide rod 135 is slidingly matched with the sliding hole 1123. By arranging the guide rod 135, the spring 133 can be supported and guided, and it is ensured that the spring 133 can only stretch and contract along its axial direction.

[0046] In an alternative embodiment, as shown in Figs. 10 and 11, the push piece 132 is a butterfly bolt. Figure 3 Figure 4 ​​As shown, the slider 131 is provided with a jackscrew hole 1312, and the position adjusting assembly 13 further comprises a jackscrew 136 which is threadedly connected to the jackscrew hole 1312 and can cooperate with the bottom plate 111. After adjusting the position of the slider 131, the jackscrew 136 is locked to the bottom plate 111, so as to lock the slider 131, and further ensure that the slider 131 and the roller 12 mounted thereon will not move during the straightening process. In an optional embodiment, a plurality of through holes can be provided on the bottom plate 111 for the jackscrew 136 to pass through, so as to realize the cooperation between the jackscrew 136 and the bottom plate 111. In another optional embodiment, the jackscrew 136 can be directly locked, so that the tip of the jackscrew 136 is slightly screwed into the bottom plate 111, and the cooperation between the jackscrew 136 and the bottom plate 111 can also be realized.

[0047] Further, as shown in Figure 3 , the slider 131 is in a stepped structure and has a stepped surface 1313, the upper end of the slider 131 passes through the sliding groove 1121, and the stepped surface 1313 abuts against the lower surface of the frame 112. In this way, the slider 131 can be limited between the bottom plate 111 and the frame 112, so as to ensure that the slider 131 can slide along the sliding groove 1121, and also prevent the slider 131 from moving upward and out of the sliding groove 1121.

[0048] It should be noted that the structure of the vertical straightening assembly 20 is completely same as that of the horizontal straightening assembly 10, and thus will not be described herein.

[0049] In an optional embodiment, as shown in Figure 1 , the wire straightening mechanism further comprises a pair of supporting rollers 30 which are located between the horizontal straightening assembly 10 and the vertical straightening assembly 20 and are oppositely arranged in the up-down direction, and the wire 40 can pass between the two supporting rollers 30. The pair of supporting rollers 30 are arranged to adapt to the composite wire 4, that is, the two wires 40 which have been combined together, because the upstream end of the wire 40 in this section bears a horizontal force and the downstream end bears a vertical force when leaving the horizontal straightening assembly 10 and entering the vertical straightening assembly 20, if the wire 40 in this section is not constrained, the two wires 40 combined together can be peeled off each other. Therefore, through the pair of supporting rollers 30, the wire 40 in this section can be constrained to prevent the two wires 40 combined together from being peeled off each other.

[0050] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A wire straightening mechanism, characterized by, The horizontal straightening assembly (10) and the vertical straightening assembly (20) are arranged in a perpendicular manner, have the same structure and are arranged on a straight line, the horizontal straightening assembly (10) and the vertical straightening assembly (20) each comprise a base (11) and a plurality of rollers (12) rotatably arranged on the base (11), the plurality of rollers (12) are arranged in a staggered manner in two rows, a wire (40) can pass between the two rows of rollers (12), the distance between the axis of each roller (12) and the wire (40) gradually decreases along the conveying direction of the wire (40), and each roller (12) is adjustably arranged on the base (11) by a position adjusting assembly (13) in the direction perpendicular to the conveying direction of the wire (40); The base (11) comprises a bottom plate (111) and a frame (112) buckled on the bottom plate (111), and the frame (112) is provided with a sliding groove (1121) extending in the direction perpendicular to the conveying direction of the wire (40); The position adjusting assembly (13) comprises a sliding block (131), a push piece (132) and a spring (133), the sliding block (131) is slidably arranged in the sliding groove (1121), the sliding block (131) is provided with an axis hole (1311), a rotating shaft (14) is installed in the axis hole (1311), the free end of the rotating shaft (14) extends above the frame (112) and is rotatably provided with the roller (12), one side surface of the frame (112) is provided with a through hole (1122) communicating with the sliding groove (1121), the push piece (132) penetrates the through hole (1122) and abuts against one end of the sliding block (131), and the spring (133) abuts against the other end of the sliding block (131) and the end wall of the sliding groove (1121), and the push piece (132) can push the sliding block (131) to move along the sliding groove (1121).

2. The wire straightening mechanism of claim 1, wherein, The through hole (1122) is a light hole, the push piece (132) is a bolt, the bolt is slidably connected in the light hole, and the position adjusting assembly (13) further comprises two nuts (134), the two nuts (134) are threadedly connected to the bolt and located at opposite ends of the through hole (1122) respectively.

3. The wire straightening mechanism of claim 1, wherein, The through hole (1122) is a threaded hole, and the push piece (132) is a bolt.

4. The wire straightening mechanism according to claim 2 or 3, characterized in that, The bolt is a butterfly bolt.

5. The wire straightening mechanism of claim 1, wherein, The frame (112) is provided with a sliding hole (1123) extending in the direction perpendicular to the conveying direction of the wire (40) and communicating with the sliding groove (1121) at an end away from the through hole (1122), and the position adjusting assembly (13) further comprises a guide rod (135), the guide rod (135) penetrates the spring (133), one end of the guide rod (135) is connected with the sliding block (131), and the other end of the guide rod (135) is slidably matched with the sliding hole (1123).

6. The wire straightening mechanism of claim 1, wherein, A jackscrew hole (1312) is formed in the slider (131), and the position adjusting assembly (13) further comprises a jackscrew (136) which is threadedly connected in the jackscrew hole (1312) and can cooperate with the bottom plate (111).

7. The wire straightening mechanism of claim 1, wherein, The slider (131) is in a stepped structure and has a stepped surface (1313), the upper end of the slider (131) is arranged in the sliding groove (1121), and the stepped surface (1313) abuts against the lower surface of the frame (112).

8. The wire straightening mechanism of claim 1, wherein, The wire straightening mechanism further comprises a pair of support rollers (30) which are oppositely arranged in the up-down direction between the horizontal straightening assembly (10) and the vertical straightening assembly (20), and the wire (40) can pass between the two support rollers (30).

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