A kind of inductor coil wire leg bending and breaking mechanism and method

Abstract

The present invention discloses a bending and breaking mechanism and method for inductor coil wire legs, which comprises a first driving member, a movable plate driven by the first driving member to move left and right, a second driving member fixed on the movable plate, a rotating plate driven by the second driving member to rotate around a rotating shaft, a clamping unit fixed on the rotating plate and used to clamp the wire leg ends, and a wire leg bending unit fixed on the movable plate and wrapped and bent the wire leg along the surface of the inductor magnet. The present invention has a simple structure, uses reverse bending and pulling force to break the wire leg, effectively protects the wire leg from surface damage, and has high wire leg bending and breaking efficiency.

Description

[Technical field]

[0001] The invention belongs to the technical field of inductor coil production, and particularly relates to a bending and breaking mechanism and method for inductor coil wire legs. [Background technology]

[0002] An inductor (inductor coil) is an electromagnetic induction element wound with an insulated wire, and is also one of the commonly used components in electronic circuits. The inductor coil includes a coil and a magnet. After the winding is completed, the coil needs to be welded together with the flat magnet. Before welding, the wire legs of the coil need to be shaped, bent and wrapped on the surface of the flat magnet, and then the excess wire legs are cut off before the welding operation is performed. For micro-sized inductor coils, especially flat inductors, their size is only 1 to 2 mm, which is very small. The wire leg bending and cutting mechanism in the prior art basically uses multiple bending pressure heads in conjunction with stamping and cutting tools to achieve cutting and cutting. The structure is complex, and it is easy to damage the wire legs of micro-sized inductors, resulting in defective products.

[0003] Therefore, it is necessary to provide a new inductor coil leg bending and breaking mechanism and method to solve the above problems. [Summary of the invention]

[0004] The main purpose of the present invention is to provide an inductor coil wire foot bending and breaking mechanism with a simple structure. The wire foot is broken by reverse bending and pulling force, which effectively protects the wire foot from surface damage and has high wire foot bending and breaking efficiency.

[0005] The present invention achieves the above-mentioned purpose through the following technical scheme: an inductor coil wire leg bending and breaking mechanism, which includes a first driving member, a movable plate driven by the first driving member to move left and right, a second driving member fixed on the movable plate, a rotating plate driven by the second driving member to rotate around a rotating axis, a wire clamping unit fixed on the rotating plate and used to clamp the wire leg end, and a wire leg bending unit fixed on the movable plate and used to wrap and bend the wire leg along the surface of the inductor magnet.

[0006] Furthermore, the wire clamping unit includes a second cylinder and a clamping claw driven by the second cylinder to perform opening and clamping actions.

[0007] Furthermore, the line foot bending unit includes a first cylinder fixed on the movable plate, and a line pressing and bending head driven by the first cylinder to move up and down and cooperate with the horizontal movement of the movable plate to achieve line foot bending.

[0008] Furthermore, the line foot bending unit includes a third cylinder fixed on the movable plate, a connecting plate driven by the third cylinder to move parallel to the moving direction of the movable plate, a first cylinder fixed on the connecting plate, and a wire pressing and bending head driven by the first cylinder to move up and down and cooperate with the horizontal movement of the connecting plate to achieve line foot bending.

[0009] Furthermore, the wire crimping and bending head has a side pressing surface for pressing the wire foot against the side surface of the inductor magnet, a lower pressing surface for pressing the wire foot against the upper surface of the inductor magnet, an edge for providing a reverse bending point for breaking the wire foot, a front end face, and an inclined supporting surface for providing space for the wire foot to bend in the reverse direction.

[0010] Furthermore, the side pressure surface and the lower pressure surface are vertically distributed and a circular arc groove is provided at the intersection.

[0011] Furthermore, the length of the pressing surface in the moving direction of the movable plate is equal to the length of the line feet designed to be retained on the upper surface of the inductor magnet.

[0012] Furthermore, it also includes a surplus thread suction device, and the suction port of the surplus thread suction device is close to the initial position of the thread clamping unit.

[0013] Another object of the present invention is to provide a method for bending and breaking the wire legs of an inductor coil, which comprises:

[0014] 1) In the initial state, the wire pins extend horizontally from the side surface of the inductor magnet;

[0015] 2) providing a clamping claw to clamp the free end of the wire leg so that it is bent around the bottom edge of the side surface of the inductor magnet and gradually approaches the side surface;

[0016] 3) providing a wire crimping and bending head, the wire crimping and bending head having a side pressing surface for pressing the wire foot against the side surface of the inductor magnet, a lower pressing surface 82 for pressing the wire foot against the upper surface of the inductor magnet, a front end surface, and an inclined supporting surface 84 for providing space for the wire foot to bend in the reverse direction, and the outer edge of the lower pressing surface provides a reverse bending point for breaking the wire foot;

[0017] 4) Using the front end surface of the wire crimping and bending head to move upward from below the wire foot along the side surface of the inductor magnet to press the wire foot against the side surface of the inductor magnet, the wire crimping and bending head rises to a position where the height difference between its lower pressing surface and the upper surface of the inductor magnet is equal to the thickness of the wire foot;

[0018] 5) Then drive the wire crimping and bending head to move horizontally, use its lower pressure surface to squeeze the wire feet to stick to the upper surface of the inductor magnet, and the wire crimping and bending head moves horizontally until its side pressure surface is tightly attached to the wire feet on the side surface of the inductor magnet, and at this time, the length of the wire feet covered by the lower pressure surface is the set length of the wire feet retained on the upper surface of the inductor magnet;

[0019] 6) During steps 4)-5), the clamping jaw holds the free end of the wire foot and swings according to the swing trajectory of the free end of the wire foot during the bending process. After the wire foot is bent, the clamping jaw holds the free end of the wire foot and rotates in the opposite direction around the reverse bending point to tear off the excess wire.

[0020] Furthermore, the clamp is arranged on a rotating plate, the rotating plate is driven by a first servo motor to rotate around a rotating shaft, and the first servo motor is driven by a second servo motor to perform horizontal linear motion.

[0021] Compared with the prior art, the beneficial effects of the inductor coil wire foot bending and breaking mechanism of the present invention are: through the ingenious design of the wire crimping bending head and the wire clamping unit, the wire clamping unit is set on a rotating plate, and the rotation center of the wire clamping unit corresponds to the wire crimping end of the wire crimping bending head, and the wire clamping unit is used to clamp the wire head around the wire crimping end. The rotational movement of the wire clamping unit is coordinated with the upward movement of the wire crimping bending head, and the synchronous horizontal movement of the two is combined with the combination of multiple movement directions to realize the bending of the wire feet and the breaking of the excess wire feet; on the one hand, the wire clamping unit acts as an auxiliary power source when the wire feet are bent; on the other hand, it acts as the main power source for breaking the wire feet; the efficiency of the bending and cutting of the wire feet is greatly improved; and the wire foot bending requirements of the miniature inductor coil are met; the reverse pulling force is used to achieve the breaking of the wire feet, which effectively protects the surface of the wire feet from damage; and the wire foot covering, bending and wire pulling actions are completed in one go, with high overall efficiency, which greatly improves the production efficiency of the production line.

Brief Description of the Drawings

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the movable plate in an embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a wire crimping and bending head in an embodiment of the present invention;

[0025] Figure 4a-4e It is a schematic diagram of the process state structure of wire pressing, bending and pulling according to an embodiment of the present invention;

[0026] The numbers in the figure represent:

[0027] 100 inductor coil wire foot bending and breaking mechanism; 101 coil; 102 wire foot; 103 inductor magnet;

[0028] 1 first driving member; 2 movable plate; 3 second driving member; 4 first cylinder; 5 rotating shaft; 6 rotating plate; 7 wire clamping unit, 71 second cylinder, 72 clamping jaws; 8 wire pressing and bending head, 81 side pressing surface, 82 lower pressing surface, 83 edge, 84 front end surface, 85 oblique supporting surface, 86 arc groove; 9 excess wire suction device, 91 air suction port. [Specific implementation method]

[0029] Example:

[0030] Please refer to Figure 1-Figure 4e The present embodiment is a wire leg bending and breaking mechanism 100 for an inductor coil, which includes a first driving member 1, a movable plate 2 driven by the first driving member 1 to move left and right, a second driving member 3 fixed on the movable plate 2, a rotating plate 6 driven by the second driving member 3 to rotate around a rotating axis 5, a wire clamping unit 7 fixed on the rotating plate 6, and a wire leg bending unit fixed on the movable plate and covering and bending the wire leg along the surface of the inductor magnet.

[0031] The wire clamping unit 7 includes a second cylinder 71 and a clamping claw 72 driven by the second cylinder 71 to perform opening and clamping actions.

[0032] In this embodiment, the line foot bending unit includes a first cylinder 4 fixed on the movable plate 2 and a line pressing and bending head 8 driven by the first cylinder 4 to move up and down.

[0033] The wire crimping and bending head 8 has a side pressing surface 81 for pressing the wire foot against the side surface of the inductor magnet 103, a lower pressing surface 82 for pressing the wire foot against the upper surface of the inductor magnet 103, an edge 83 for providing a reverse bending point for breaking the wire foot, a front end surface 84 and an inclined supporting surface 85 for providing space for the wire foot to be bent in the reverse direction.

[0034] The side pressing surface 81 and the lower pressing surface 82 are arranged perpendicularly and a circular arc groove 86 is arranged at the intersection, so that when the pressing line foot is bent by 90°, it can be completely fitted with the circular arc corner surface formed by the bending of the line foot, thereby improving the pressing accuracy of the line foot and the uniform pressure. The length of the lower pressing surface 82 in the moving direction of the movable plate 2 is equal to the length of the line foot designed to be retained on the upper surface of the inductor magnet 103.

[0035] The edge 83 is the outer edge of the pressing surface 82 .

[0036] The axis of the rotating shaft 5 is coplanar with the side pressure surface 81 .

[0037] This embodiment is also provided with a surplus thread suction device 9, and the suction port 91 of the surplus thread suction device 9 is close to the initial position of the wire clamping unit 7. When the wire clamping unit 7 breaks the wire foot, it clamps the surplus thread end back to the initial position, and then the clamping claw 72 is released, and the surplus thread end is sucked away by the surplus thread suction device 9.

[0038] In the initial state, the wire foot 102 of the coil 101 extends horizontally from the lower part of the surface of one side of the inductor magnet 103, and the clamping unit 7 is located at a 45° position (taking the rotating shaft 5 as the center and the rotation radius of the clamping unit 7 as the radius to form a circle), and the first driving member 1 drives the movable plate 2 to approach the coil 101. When the free end of the wire foot 102 extends into the clamping claw 72, the clamping claw 72 in the clamping unit 7 clamps the end of the wire foot; the first driving member 1 continues to drive the movable plate 2 to approach the inductor magnet 103, and at the same time, the clamping unit 7 is driven by the second driving member 3. The wire clamping unit 7 rotates around the rotating shaft 5 (the rotating shaft 5, as the rotation center of the wire clamping unit 7, has only horizontal movement), and the clamping claw 72 clamps the end of the wire foot and folds it upward; when the wire foot is about to approach the side surface of the inductor magnet 103, the wire pressing and bending head 8 moves upward under the driving action of the first cylinder 4, and relies on its front end surface 84 to push the wire foot part to fold upward, and squeeze the wire foot to the side surface of the inductor magnet 103; at this time, the height difference between the lower pressing surface 82 of the wire pressing and bending head 8 and the upper surface of the inductor magnet 103 is exactly consistent with the thickness of the wire foot; the movable plate 2 continues to move upward. The wire pressing and bending head 8 moves horizontally with it and continues to push the wire foot, and uses the lower pressing surface 82 to squeeze the wire foot to make it stick to the upper surface of the inductor magnet 103. At the same time, the clamping claw 72 clamps the wire foot end under the action of horizontal drive and rotation drive and moves with the overall bending direction of the wire foot; at this time, the wire foot length covered by the lower pressing surface 82 is consistent with the wire foot length retained on the upper surface of the inductor magnet 103 as required by the design, and at this time, the side pressing surface 81 is just in close contact with the wire foot on the side surface of the inductor magnet 103, and the bent wire foot is pressure-maintained and shaped; when the wire foot is bent After folding, the second driving member 3 drives the clamping jaw 72 to clamp the free end of the wire foot and rotate in the opposite direction (clockwise), pulling the wire foot with the end face of the wire pressing and bending head 8 as the breaking point (reverse bending point) to break the wire foot. Since the rotation radius of the clamping jaw 72 is larger than the rotation radius of the wire foot, the wire foot can be broken during the rotation of the clamping jaw 72; then the clamping jaw 72 is reversed to the initial 45° position, and after the wire foot is broken, the first driving member 1 drives the movable plate 2 to retreat, completing the wire foot bending and breaking operation; the clamping jaw 72 is released, and the broken wire is sucked away by the remaining wire suction device 9.

[0039] In another embodiment, the molding bending unit includes a third cylinder (not shown in the figure) fixed on the movable plate 2, a connecting plate (not shown in the figure) driven by the third cylinder to move parallel to the moving direction of the movable plate 2, a first cylinder 4 fixed on the connecting plate, and a wire bending head 8 driven by the first cylinder 4 to move up and down and cooperate with the horizontal movement of the connecting plate to achieve molding bending. When the wire bending head 8 is performing wire bending, in addition to being horizontally moved by the movable plate 2, it can also complete the molding wrapping bending action by horizontally moving with the assistance of the third cylinder.

[0040] This embodiment also provides a method for bending and breaking the wire legs of an inductor coil, which includes:

[0041] 1) In the initial state, the wire pins extend horizontally from the side surface of the inductor magnet;

[0042] 2) providing a clamping claw to clamp the free end of the wire leg so that it is bent around the bottom edge of the side surface of the inductor magnet and gradually approaches the side surface;

[0043] 3) providing a wire crimping and bending head, the wire crimping and bending head having a side pressing surface for pressing the wire foot against the side surface of the inductor magnet, a lower pressing surface 82 for pressing the wire foot against the upper surface of the inductor magnet, a front end surface, and an inclined supporting surface 84 for providing space for the wire foot to bend in the reverse direction, and the outer edge of the lower pressing surface provides a reverse bending point for breaking the wire foot;

[0044] 4) Using the front end surface of the wire crimping and bending head to move upward from below the wire foot along the side surface of the inductor magnet to press the wire foot against the side surface of the inductor magnet, the wire crimping and bending head rises to a position where the height difference between its lower pressing surface and the upper surface of the inductor magnet is equal to the thickness of the wire foot;

[0045] 5) Then drive the wire crimping and bending head to move horizontally, use its lower pressure surface to squeeze the wire feet to stick to the upper surface of the inductor magnet, and the wire crimping and bending head moves horizontally until its side pressure surface is tightly attached to the wire feet on the side surface of the inductor magnet, and at this time, the length of the wire feet covered by the lower pressure surface is the set length of the wire feet retained on the upper surface of the inductor magnet;

[0046] 6) During steps 4)-5), the clamping jaw holds the free end of the wire foot and swings according to the swing trajectory of the free end of the wire foot during the bending process. After the wire foot is bent, the clamping jaw holds the free end of the wire foot and rotates in the opposite direction around the reverse bending point to tear off the excess wire.

[0047] The present embodiment provides a bending and breaking mechanism and method for the wire legs of an inductor coil. By cleverly designing a wire crimping bending head and a wire clamping unit, the wire clamping unit is arranged on a rotating plate, and the rotation center of the wire clamping unit corresponds to the wire crimping end of the wire crimping bending head. The wire clamping unit is used to clamp the wire head and the rotational movement around the wire crimping end is coordinated with the upward movement of the wire crimping bending head. The wire legs are bent and the excess wire legs are broken by combining the synchronous horizontal movement of the two and the combination of multiple movement directions. On the one hand, the wire clamping unit acts as an auxiliary power source when the wire legs are bent; on the other hand, it acts as the main power source for breaking the wire legs. The efficiency of bending and cutting the wire legs is greatly improved, and the wire leg bending requirements of miniature inductor coils are met. The wire legs are broken by using reverse pulling force, which effectively protects the surface of the wire legs from damage. The wire leg covering, bending and wire pulling actions are completed in one go, with high overall efficiency, which greatly improves the production efficiency of the production line.

[0048] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A bending and breaking mechanism for inductor coil legs, characterized in that: The invention comprises a first driving member, a movable plate driven by the first driving member to move left and right, a second driving member fixed on the movable plate, a rotating plate driven by the second driving member to rotate around a rotating shaft, a wire clamping unit fixed on the rotating plate and used to clamp the end of the wire foot, and a wire foot bending unit fixed on the movable plate and used to wrap and bend the wire foot along the surface of the inductor magnet; the wire foot bending unit comprises a wire pressing and bending head which moves up and down, or moves up and down and moves parallel to the moving direction of the movable plate; the wire pressing and bending head has a wire pressing and bending head which presses the wire foot against the inductor magnet. A side pressure surface on the side surface of the magnet, a downward pressure surface for pressing the wire foot against the upper surface of the inductor magnet, an edge that provides a reverse bending point for breaking the wire foot, a front end surface, and an oblique support surface that provides space for the wire foot to be reversely bent; the downward pressure surface extends forward from the top of the side pressure surface and is perpendicular to the side pressure surface, the edge is the front end edge of the downward pressure surface, the front end surface extends upward from the edge, and the oblique support surface extends obliquely upward and backward from the top of the front end surface; the wire clamping unit includes a second cylinder and a clamping claw driven by the second cylinder to open and clamp.

2. The inductor coil leg bending and breaking mechanism according to claim 1, characterized in that: The line foot bending unit includes a first cylinder fixed on the movable plate, and the line pressing and bending head is driven by the first cylinder to move up and down and cooperate with the horizontal movement of the movable plate to achieve line foot bending.

3. The inductor coil leg bending and breaking mechanism according to claim 1, characterized in that: The line foot bending unit includes a third cylinder fixed on the movable plate, a connecting plate driven by the third cylinder to move parallel to the moving direction of the movable plate, and a first cylinder fixed on the connecting plate; the wire pressing and bending head is driven by the first cylinder to move up and down and cooperates with the horizontal movement of the connecting plate to achieve line foot bending.

4. The inductor wire leg bending and breaking mechanism according to claim 1, characterized in that: A circular arc groove is arranged at the intersection of the side pressure surface and the lower pressure surface.

5. The inductor wire leg bending and breaking mechanism according to claim 1, characterized in that: The length of the pressing surface in the moving direction of the movable plate is equal to the length of the pins designed to be retained on the upper surface of the inductor magnet.

6. The inductor coil leg bending and breaking mechanism according to claim 1, characterized in that: A surplus thread suction device is also provided, and the air suction port of the surplus thread suction device is close to the initial position of the thread clamping unit.

7. A method for bending and breaking the wire legs of an inductor coil, characterized in that: It includes: 1) In the initial state, the wire pins extend horizontally from the side surface of the inductor magnet; 2) providing a clamping claw to clamp the free end of the wire leg so that it is bent around the bottom edge of the side surface of the inductor magnet and gradually approaches the side surface; 3) A wire crimping and bending head is provided, the wire crimping and bending head having a side pressing surface for pressing the wire foot against the side surface of the inductor magnet, a lower pressing surface for pressing the wire foot against the upper surface of the inductor magnet, a front end surface, and an oblique supporting surface for providing space for the wire foot to be reversely bent, the outer edge of the lower pressing surface providing a reverse bending point for the wire foot to be broken; the lower pressing surface extends forward from the top of the side pressing surface and is vertically distributed with the side pressing surface, the edge is the front edge of the lower pressing surface, the front end surface extends upward from the edge, and the oblique supporting surface extends obliquely upward and backward from the top of the front end surface; 4) Using the front end surface of the wire crimping and bending head to move upward from below the wire foot along the side surface of the inductor magnet to press the wire foot against the side surface of the inductor magnet, the wire crimping and bending head rises to a position where the height difference between its lower pressing surface and the upper surface of the inductor magnet is equal to the thickness of the wire foot; 5) Then drive the wire crimping and bending head to move horizontally, use its lower pressure surface to squeeze the wire feet to stick to the upper surface of the inductor magnet, and the wire crimping and bending head moves horizontally until its side pressure surface is tightly attached to the wire feet on the side surface of the inductor magnet, and at this time, the length of the wire feet covered by the lower pressure surface is the set length of the wire feet retained on the upper surface of the inductor magnet; 6) During steps 4)-5), the clamping jaw holds the free end of the wire foot and swings according to the swing trajectory of the free end of the wire foot during the bending process. After the wire foot is bent, the clamping jaw holds the free end of the wire foot and rotates in the opposite direction around the reverse bending point to tear off the excess wire.

8. The method for bending and breaking the wire legs of an inductor coil as claimed in claim 7, characterized in that: The clamping jaws are arranged on a rotating plate, and the rotating plate is driven by a first servo motor to rotate around a rotating shaft, and the first servo motor is driven by a second servo motor to perform horizontal linear motion.

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