A fully automatic coil bending equipment

Abstract

The invention discloses a fully automatic coil bending device, which belongs to the technical field of coil bending, and comprises a bending head connected to an external driving mechanism, wherein a center column is fixedly connected to the center of the top of the bending head, a wire passing groove is arranged on the inner side of the bending head, a guide roller for clamping and guiding the copper wire is rotatably arranged at the wire passing groove through a bracket, a driven counting roller is meshingly arranged on the surface of the guide roller, and an electromagnetic induction heating coil for heating the copper wire is arranged on one side of the bending head; the invention is provided with the guide roller, the driven counting roller and the electromagnetic induction heating coil, and when the opposing photoelectric sensor is rotated to a mutually aligned position, the electromagnetic induction heating coil heats the bending part of the copper wire, which can greatly reduce the stress generated when the copper wire is bent, so that the surface of the bending part becomes smooth, and it is ensured that the coil can be better fitted with the iron core, thereby ensuring the stability of the coil installation.

Description

Technical Field

[0001] The invention relates to the technical field of coil bending, and in particular to a fully automatic coil bending device. Background Art

[0002] The existing inductor coil is made by bending copper wire through bending equipment. There are many types of inductor coils. For a flat square coil, the flat copper wire needs to be bent at intervals of specified lengths. Since the copper wire is flat, the inner and outer sides of the copper wire are mainly bent by force during bending. Since the stresses on the inner and outer sides of the copper wire are different, the surface of the copper wire bends with wrinkles due to the stress difference between the inner and outer sides, making it uneven. When the coil is installed on the iron core, the bend cannot fit exactly with the corner of the iron core, making the coil installation unstable. In addition, after the existing coil is bent, the copper wire has stress at the bend, which causes the coil to rebound slightly, resulting in uneven spacing of the coil and insufficient contact force between the bend of the coil and the internal iron core, thereby affecting the electromagnetic matching performance of the coil. Therefore, a fully automatic coil bending equipment is proposed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to solve the problem in the prior art that when a flat copper wire is bent, stress exists at the bending point, resulting in unevenness at the bending point and uneven coil spacing, and to propose a fully automatic coil bending device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A fully automatic coil bending device, comprising a bending head connected to an external driving mechanism, a center column fixedly connected at the top center of the bending head, a wire passing groove provided on the inner side of the bending head, a guide roller for clamping and guiding the copper wire rotatably arranged at the wire passing groove through a bracket, a friction layer for increasing the friction with the copper wire provided on the surface of the guide roller, a driven counting roller meshingly arranged on the surface of the guide roller, an electromagnetic induction heating coil for heating the copper wire provided on one side of the bending head, a clamping mechanism for clamping an iron core provided on one side of the bending head, and a cooling and shaping mechanism for cooling and shaping the coil movably arranged on one side of the clamping mechanism;

[0006] The clamping mechanism comprises clamping cylinders arranged opposite to each other, the clamping cylinders are mounted on the equipment through fixing parts, the output end of the clamping cylinders is fixedly connected to a clamping disk, and a plurality of balls are rollingly arranged on the surface of the clamping disk, so that the iron core can move freely between the clamping disks;

[0007] The cooling and shaping mechanism includes a cooling cylinder, a movable frame is provided at the bottom end of the cooling cylinder, the interior of the cooling cylinder is filled with cold water, both ends of the cooling cylinder are connected to a circulating pump through a tube telescopic assembly, the circulating pump is installed on the ground through a support, a cooling chute is opened on the surface of the cooling cylinder, a heat-conducting block is slidably provided on the inner side of the cooling chute, and a cooling shaping rod is fixedly connected to the surface of the heat-conducting block.

[0008] Preferably, the surface of the driven counting roller is provided with mounting grooves which are arranged opposite to each other, and a corresponding photoelectric sensor is installed inside the mounting groove.

[0009] Preferably, the opposing photoelectric sensors are connected to a controller via a signal transmission connection, and the controller is electrically connected to an external driving mechanism. When the opposing photoelectric sensors are aligned with each other, the opposing photoelectric sensors provide feedback to the controller, and the controller controls the electromagnetic induction heating coil to heat the bending part of the copper wire. After heating, the bending part of the copper wire is transported to the wire groove for bending.

[0010] Preferably, connecting springs are fixedly connected between adjacent heat-conducting blocks, a limiting groove is provided on the inner wall of the cooling groove, a plurality of limiting blocks are fixedly connected to the inner wall of the limiting groove at equal intervals, the vertical movement range of the heat-conducting block is limited by adjacent limiting blocks, a heat dissipation hole is provided on the top of the cooling cylinder, a propeller is arranged inside the cooling cylinder, and the propeller rotates under the action of water flow, which helps the water to accelerate the heat dissipation and prolong the cooling time of the coil by the cold water.

[0011] Preferably, the tube body telescopic assembly comprises a circulation tube connected to a circulation pump and a connecting tube connected to a cooling cylinder, and telescopic tubes are slidably arranged inside the circulation tube and the connecting tube.

[0012] Preferably, the insides of the circulation pipe and the connecting pipe are fixedly connected with fixing rings, and the two ends of the telescopic pipe are fixedly connected with resistance springs between the fixing rings.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This solution is provided with a guide roller, a driven counting roller and an electromagnetic induction heating coil. When the opposing photoelectric sensors rotate to a mutually aligned position, the bending part of the copper wire moves to the electromagnetic induction heating coil. At the same time, the controller controls the electromagnetic induction heating coil to heat the bending part of the copper wire, thereby greatly reducing the stress generated when the copper wire is bent, making the surface of the bending part smooth, ensuring that the coil can better fit the iron core, and thus ensuring the stability of the coil installation.

[0015] 2. This solution is provided with a cooling positioning mechanism. During the coil forming process, the cooling shaping rod will extend to the inside of the coil spacing, which can cool the coil bending part while avoiding the coil rebound phenomenon and ensuring the uniformity of the coil spacing.

[0016] 3. This solution is provided with a clamping mechanism, which can achieve the clamping and fixing of the iron core while allowing the iron core to move synchronously with the coil, ensuring that the coil can be directly wound and formed on the surface of the iron core, eliminating the subsequent coil installation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a fully automatic coil bending device proposed by the present invention Figure 1 ;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of a fully automatic coil bending device proposed by the present invention Figure 2 ;

[0019] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 A schematic diagram of the position structure of a bending head, a guide roller and a driven counting roller in a fully automatic coil bending device proposed by the present invention;

[0021] Figure 5 A schematic cross-sectional structure diagram of a driven counting roller in a fully automatic coil bending device proposed by the present invention;

[0022] Figure 6 This is a structural schematic diagram of a bending head in a fully automatic coil bending device proposed by the present invention;

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of a cooling cylinder in a fully automatic coil bending device proposed by the present invention;

[0024] Figure 8 The present invention is a schematic diagram of the cross-sectional structure of a tube body telescopic assembly in a fully automatic coil bending device proposed by the present invention.

[0025] In the figure: 1. bending head; 101. wire groove; 2. clamping cylinder; 3. clamping plate; 31. ball; 4. electromagnetic induction heating coil; 5. driven counting roller; 51. mounting groove; 6. cooling cylinder; 61. cooling slide; 7. circulating pump; 8. circulating pipe; 9. guide roller; 10. telescopic pipe; 11. heat conducting block; 12. center column; 13. cooling shaping rod; 14. connecting spring; 15. photoelectric sensor; 16. fixing ring; 17. resistance spring; 18. propeller; 19. limit block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example, see Figures 1 to 8 , a fully automatic coil bending device, comprising a bending head 1 connected to an external driving mechanism, a center column 12 is fixedly connected to the top center of the bending head 1, a wire groove 101 is provided on the inner side of the bending head 1, a guide roller 9 for clamping and guiding the copper wire is arranged at the wire groove 101 through a bracket, a friction layer for increasing the friction with the copper wire is arranged on the surface of the guide roller 9, a driven counting roller 5 is meshed on the surface of the guide roller 9, an electromagnetic induction heating coil 4 for heating the copper wire is arranged on one side of the bending head 1, wherein the bending device is a prior art and will not be described in detail here;

[0030] Furthermore, a relatively arranged mounting groove 51 is provided on the surface of the driven counting roller 5, and a corresponding photoelectric sensor 15 is installed on the inner side of the mounting groove 51. The corresponding photoelectric sensor 15 is connected to a controller through a signal transmission connection, and the controller is electrically connected to an external driving mechanism. When the corresponding photoelectric sensors 15 are aligned with each other, the corresponding photoelectric sensors 15 provide feedback to the controller, and the controller controls the electromagnetic induction heating coil 4 to heat the bending part of the copper wire. After heating, the bending part of the copper wire is transported to the wire passing groove 101 for bending operation.

[0031] It should be noted that: when the opposing photoelectric sensor 15 rotates to the aligned position, the bending part of the copper wire moves to the inside of the electromagnetic induction heating coil 4, and at the same time the opposing photoelectric sensor 15 feeds back to the controller, and the controller controls the electromagnetic induction heating coil 4 to work, so that it heats the bending part of the copper wire. When the copper wire continues to move to the wire groove 101, another pair of opposing photoelectric sensors 15 are aligned with each other. At this time, the controller controls the electromagnetic induction heating coil 4 to work again, and at the same time controls the external drive mechanism to work, so that the bending head 1 can realize the bending function of the copper wire. The bending part is heated, so that the stress at the bending part can be greatly reduced, making the bending part relatively flat, ensuring that the coil and the iron core fit better, thereby ensuring the stability of the coil installation.

[0032] A clamping mechanism for clamping the iron core is provided on one side of the bending head 1. The clamping mechanism includes a clamping cylinder 2 which is arranged opposite to each other. The clamping cylinder 2 is installed with the equipment through a fixing piece. A clamping plate 3 is fixedly connected to the output end of the clamping cylinder 2. A plurality of balls 31 are provided on the surface of the clamping plate 3 so that the iron core can move freely between the clamping plates 3. The free movement includes the horizontal movement of the iron core along with the copper wire and the bending and rotation of the iron core along with the copper wire.

[0033] It should be noted that: the clamping function of the iron core is realized by using the clamping cylinder 2 in cooperation with the clamping plate 3. Under the action of the ball 31, the clamping plate 3 can clamp the iron core and ensure that the iron core can move synchronously with the coil, so that the coil can be directly wound and formed on the surface of the iron core, eliminating the subsequent installation step of assembling the coil to the surface of the iron core.

[0034] It is worth noting that: after the coil is formed into one circle, the iron core is placed inside the coil and clamped by a clamping mechanism.

[0035] A cooling and shaping mechanism for cooling and shaping the coil is movably arranged on one side of the clamping mechanism; the cooling and shaping mechanism includes a cooling cylinder 6, a movable frame is arranged at the bottom end of the cooling cylinder 6, the interior of the cooling cylinder 6 is filled with cold water, and both ends of the cooling cylinder 6 are connected with a circulating pump 7 through a tube telescopic assembly, and the circulating pump 7 is installed on the ground through a support member, a cooling chute 61 is opened on the surface of the cooling cylinder 6, a heat-conducting block 11 is slidably arranged inside the cooling chute 61, and a cooling and shaping rod 13 is fixedly connected to the surface of the heat-conducting block 11.

[0036] Furthermore, the tube body telescopic assembly includes a circulation tube 8 connected to the circulation pump 7 and a connecting tube connected to the cooling cylinder 6. Telescopic tubes 10 are slidably arranged inside the circulation tube 8 and the connecting tube. Fixed rings 16 are fixedly connected inside the circulation tube 8 and the connecting tube. Resistance springs 17 are fixedly connected between the two ends of the telescopic tube 10 and the fixed rings 16.

[0037] It should be noted that: during the coil bending process, the cooling shaping rod 13 extends to the inner side of the coil spacing (that is, the coil is located between adjacent cooling shaping rods 13, see Figure 3 ), during the coil forming process, the coil will rotate, and when the bend moves to the cooling shaping rod 13, the cooling shaping rod 13 will absorb part of the heat at the bend, and the cold water inside the cooling cylinder 6 will circulate through the circulating pump 7, which can take away the heat of the cooling shaping rod 13, and the copper wire coil will rotate intermittently during the forming process, so that the bend passes through the cooling shaping rod 13 many times, realizing the cooling and shaping function of the bend (the heat at the bend will be conducted to the rest of the copper wire, and when the rest of the copper wire passes through the cooling shaping rod 13, the cooling shaping rod 13 will also absorb heat, indirectly realizing the cooling function of the bend), because the cooling shaping rod 13 is located inside the coil spacing, the coil can be prevented from rebounding, ensuring the uniformity of the coil spacing;

[0038] It is worth noting that: when the copper wire is bent for the first time, the staff needs to manually move the cooling cylinder 6 in the direction of the copper wire (the resistance spring 17 will be compressed in this process) to prevent it from blocking the bending of the copper wire. After the initial bending of the copper wire is completed, the cooling cylinder 6 is released, and the cooling cylinder 6 is reset under the elastic force of the resistance spring 17. At this time, the bent part of the copper wire is located between the lowest adjacent cooling and shaping rods 13. When the copper wire moves, it will push the cooling and shaping mechanism to move in the direction of the copper wire. When the copper wire is bent and the coil rotates, the cooling and shaping mechanism is reset (moved in the direction opposite to the direction of the copper wire) under the elastic force of the resistance spring 17 to ensure that the cooling and shaping rod 13 can always be located between the coil spacing.

[0039] Furthermore, a connecting spring 14 is fixedly connected between adjacent heat-conducting blocks 11, a limiting groove is provided on the inner wall of the cooling groove 61, and a plurality of limiting blocks 19 are fixedly connected to the inner wall of the limiting groove at equal intervals. The vertical movement range of the heat-conducting block 11 is limited by adjacent limiting blocks 19, and a heat dissipation hole is provided on the top of the cooling cylinder 6. A propeller 18 is arranged inside the cooling cylinder 6. Under the action of the water flow, the propeller 18 rotates to help the water accelerate the heat dissipation and extend the cooling time of the coil by the cold water.

[0040] It is worth noting that the setting of the limit block 19 can ensure that the distance between adjacent cooling and shaping rods 13 at each location is greater than the thickness of the copper wire.

[0041] It should be noted that: since the coil is spirally shaped, the copper wire forming the coil has a certain inclination. When the coil rotates, since the cooling shaping rod 13 is slidably connected to the cooling cylinder 6 through the heat conductive block 11, the cooling shaping rod 13 will fine-tune its position up and down as the coil rotates to ensure that the coil can rotate normally.

[0042] When the present invention is used, when the copper wire passes through the electromagnetic induction heating coil 4 and moves between the guide rollers 9, the friction between the guide rollers 9 and the copper wire causes the guide rollers 9 to rotate, and the guide rollers 9 and the driven counting rollers 5 are meshed to drive the driven counting rollers 5 to rotate. When the opposing photoelectric sensor 15 rotates to align, the bend of the copper wire moves to the inside of the electromagnetic induction heating coil 4. At the same time, the opposing photoelectric sensor 15 feeds back to the controller, and the controller controls the electromagnetic induction heating coil 4 to work, so that it heats the bend of the copper wire. After a period of time, the controller turns off the electromagnetic induction heating. Coil 4, the copper wire continues to move, and when the bend of the copper wire moves to the inside of the wire slot 101, another pair of opposing photoelectric sensors 15 are aligned with each other. At this time, the controller controls the electromagnetic induction heating coil 4 to work again, heats the next bend of the copper wire, and controls the external drive mechanism to work, so that the bending head 1 can bend the bend of the copper wire in the wire slot 101. The bend is heated, so that the stress at the bend can be greatly reduced, so that the surface of the bend of the copper wire becomes relatively flat, ensuring that the coil fits better with the surface of the iron core, thereby ensuring the stability of the coil installation;

[0043] When the copper wire is bent for the first time, the staff needs to manually move the cooling cylinder 6 in the direction of the copper wire (the resistance spring 17 will be compressed during this process) to prevent it from blocking the bending of the copper wire. When the copper wire is bent for the first time, the cooling cylinder 6 is released, and the cooling cylinder 6 is reset under the elastic force of the resistance spring 17. At this time, the bent part of the copper wire is located between the adjacent cooling shaping rods 13 at the lowest point. After the coil is formed for one circle, the iron core is placed inside the coil, and the clamping cylinder 2 is turned on, so that the clamping disk 3 can realize the clamping function of the iron core. In the subsequent forming process of the coil, the iron core can move synchronously with the coil, so that the coil can be directly wound on the surface of the iron core, eliminating the subsequent installation steps of assembling the coil to the surface of the iron core.

[0044] When the copper wire at the bent position moves to the cooling and shaping rod 13, the cooling and shaping rod 13 will absorb part of the heat at the bent position, and the cold water inside the cooling cylinder 6 will circulate through the circulating pump 7, which can take away the heat of the cooling and shaping rod 13. In the forming process, the copper wire coil will rotate intermittently, so that the bent position passes through the cooling and shaping rod 13 many times, thereby realizing the cooling and shaping function at the bent position. Since the cooling and shaping rod 13 is located on the inner side of the coil spacing, the coil can be prevented from rebounding in the vertical direction, thereby ensuring the uniformity of the coil spacing.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully automatic coil bending device, comprising a bending head (1) connected to an external drive mechanism, characterized in that: A center column (12) is fixedly connected to the center of the top of the bending head (1), a wire passing groove (101) is provided on the inner side of the bending head (1), a guide roller (9) for clamping and guiding the copper wire is rotatably arranged at the wire passing groove (101) through a bracket, a friction layer for increasing the friction with the copper wire is arranged on the surface of the guide roller (9), a driven counting roller (5) is meshedly arranged on the surface of the guide roller (9), an electromagnetic induction heating coil (4) for heating the copper wire is arranged on one side of the bending head (1), a clamping mechanism for clamping the iron core is arranged on one side of the bending head (1), and a cooling and shaping mechanism for cooling and shaping the coil is movably arranged on one side of the clamping mechanism; The clamping mechanism comprises clamping cylinders (2) arranged opposite to each other, the clamping cylinders (2) being mounted on the device via a fixing member, the output end of the clamping cylinder (2) being fixedly connected to a clamping disk (3), the surface of the clamping disk (3) being provided with a plurality of rolling balls (31), so that the iron core can move freely between the clamping disks (3); The cooling and shaping mechanism comprises a cooling cylinder (6), a movable frame is arranged at the bottom end of the cooling cylinder (6), the interior of the cooling cylinder (6) is filled with cold water, both ends of the cooling cylinder (6) are connected to a circulating pump (7) via a tube telescopic assembly, and the circulating pump (7) is installed on the ground via a support member; A cooling chute (61) is provided on the surface of the cooling cylinder (6), a heat conducting block (11) is slidably arranged inside the cooling chute (61), and a cooling shaping rod (13) is fixedly connected to the surface of the heat conducting block (11); The surface of the driven counting roller (5) is provided with mounting grooves (51) arranged opposite to each other, and a corresponding photoelectric sensor (15) is mounted inside the mounting groove (51); The through-beam photoelectric sensor (15) is connected to a controller via a signal transmission connection, and the controller is electrically connected to an external drive mechanism; When the opposing photoelectric sensors (15) are aligned with each other, the opposing photoelectric sensors (15) provide feedback to the controller, and the controller controls the electromagnetic induction heating coil (4) to heat the bent portion of the copper wire. After heating, the bent portion of the copper wire is transported to the wire slot (101) for bending.

2. The fully automatic coil bending equipment according to claim 1, characterized in that: A connecting spring (14) is fixedly connected between adjacent heat conducting blocks (11), a limiting slot is provided on the inner wall of the cooling slot (61), and a plurality of limiting blocks (19) are fixedly connected to the inner wall of the limiting slot at equal intervals.

3. The fully automatic coil bending equipment according to claim 1, characterized in that: The vertical movement range of the heat conductive block (11) is limited by an adjacent limit block (19); a heat dissipation hole is provided at the top of the cooling tube (6); a propeller (18) is provided inside the cooling tube (6); under the action of the water flow, the propeller (18) rotates, helping the water to dissipate heat faster and prolonging the cooling time of the coil by the cold water.

4. The fully automatic coil bending equipment according to claim 1, characterized in that: The tube body telescopic assembly comprises a circulation tube (8) connected to a circulation pump (7) and a connecting tube connected to a cooling cylinder (6), and telescopic tubes (10) are slidably arranged inside the circulation tube (8) and the connecting tube.

5. The fully automatic coil bending equipment according to claim 4, characterized in that: The circulation pipe (8) and the connecting pipe are both fixedly connected to a fixing ring (16) inside, and a resisting spring (17) is fixedly connected between the two ends of the telescopic pipe (10) and the fixing ring (16).

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