A vertical hollow coil forming device

Abstract

The present invention discloses a vertical hollow coil forming device, characterized in that it comprises a lower die and an upper die, the lower die is provided with a coil positioning core, the vertical hollow coil can be sleeved on the coil positioning core, the upper die comprises a coil long pin forming knife block, a die handle, a coil short pin forming knife block and an upper bottom plate, wherein the coil long pin forming knife block and the coil short pin forming knife block are arranged at an angle on the first surface of the upper bottom plate, the die handle is arranged on the second surface of the upper bottom plate, the coil long pin forming knife block is provided with a first groove, the coil short pin forming knife block is provided with a second groove, the first groove and the second groove are located at different heights, respectively corresponding to the first pin and the second pin of the vertical hollow coil that are clamped and sleeved on the coil positioning core. The present invention improves the production efficiency and product qualification rate of the vertical hollow coil, reduces the risk of short circuit of the coil insulation layer, and reduces the equipment and mold costs required for the production of the vertical hollow coil.

Description

Technical Field

[0001] The invention relates to the technical field of hollow coil manufacturing and vertical coil forming die making, and in particular to a vertical hollow coil forming device with a large wire diameter. Background Art

[0002] At present, in the electronics industry, although many inductors are packaged in SMD packaging, vertical plug-in is more reliable and reasonable for high-power inductors used in the frequency conversion field. At present, there is still a great demand for vertical plug-in hollow coils, but there are still some problems and shortcomings in the manufacturing technology to produce these high-power coils:

[0003] 1) High-power vertical coils are all made of large-diameter electromagnetic wires. To make these vertical hollow coils with large wire diameters, the production machines must have high-power power, and such machines are expensive; long-term production of such coils has a great impact on the wear and life of the equipment, resulting in increased production costs.

[0004] 2) The diameter of the vertical hollow coil wire is large, and a lot of force is needed to push the electromagnetic wire to form it during manufacturing. It is easy to scratch the insulation layer of the electromagnetic wire, causing the coil to short-circuit and oxidize. The mold formed by the machine must have high precision and smoothness in production. The mold cost is much higher than that of ordinary molds, and it is inconvenient to repair and debug.

[0005] Due to the large coil wire diameter, there are many inconsistencies in the size of the pin distance after molding, which will affect the subsequent PCB assembly and use. It is often necessary to add repeated pin correction processes later, which has high production costs and low efficiency. Summary of the invention

[0006] Based on the deficiencies of the prior art, the present invention aims to provide a vertical hollow coil forming device to improve the production efficiency and product qualification rate of vertical hollow coils, reduce the risk of short circuit of the coil insulation layer, and reduce the equipment and mold costs required for the production of vertical hollow coils.

[0007] The technical solution of the present invention is:

[0008] A vertical hollow coil forming device, characterized in that it includes a lower mold 1 and an upper mold 2, wherein the lower mold 1 is provided with a coil positioning core 12, and the coil positioning core 12 can be sleeved with a vertical hollow coil 7, and the upper mold 2 includes a coil long pin forming knife block 3, a mold handle 4, a coil short pin forming knife block 5 and an upper base plate 6, wherein the coil long pin forming knife block 3 and the coil short pin forming knife block 5 are arranged at an angle on the first surface of the upper base plate 6, and the mold handle 4 is arranged on the second surface of the upper base plate 6, the coil long pin forming knife block 3 is provided with a first groove 31, and the coil short pin forming knife block 5 is provided with a second groove 51, the first groove 31 and the second groove are located at different heights, respectively corresponding to the first pin and the second pin of the vertical hollow coil 7 clamped and sleeved on the coil positioning core 12.

[0009] Furthermore, the mold handle 4 is also connected to a power mechanism 8 for driving the mold handle to reciprocate.

[0010] Furthermore, the power mechanism adopts a cylinder.

[0011] Furthermore, a coil positioning block 9 is provided on the lower mold 1, and a coil positioning groove 91 is dug on the coil positioning block to form an arc-shaped fence for the coil positioning core. The coil positioning core 12 is located in the coil positioning groove 91, and the distance between the inner wall surface of the coil positioning groove 91 and the outer wall of the coil positioning core is not less than the wire diameter of the coil.

[0012] Furthermore, a coil pitch limiting portion is provided on each of the coil positioning blocks located on both sides of the coil positioning groove 91 , and the coil pitch limiting portion is used to limit the relative angle between the two pins after the pins of the coil are bent.

[0013] Furthermore, a base 10 is provided below the lower mold 1 .

[0014] Furthermore, at least one of the coil long pin forming blade block 3 and the coil short pin forming blade block 5 is movably disposed on the first surface of the upper base plate 6 .

[0015] Furthermore, it also includes a coil positioning pressing plate 11, and the coil positioning pressing plate 11 is used to press and cover the coil after the coil positioning core is placed in the coil.

[0016] The beneficial effects of the present invention are: improving the production efficiency and product qualification rate of vertical hollow coils, reducing the risk of short circuit of the coil insulation layer, and reducing the equipment and mold costs required for producing vertical hollow coils. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2It is a structural schematic diagram of the upper mold and the lower mold in the separated state according to an embodiment of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the enlarged state of the lower mold of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the upper mold of the present invention in an enlarged state.

[0021] Figure 5 It is a schematic structural diagram of the second groove on the coil short pin forming knife block of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] like Figure 1-4 As shown, a vertical hollow coil forming device comprises a lower die 1 and an upper die 2, wherein the lower die 1 is provided with a coil positioning core 12, on which a vertical hollow coil 7 can be sleeved, and the upper die 2 comprises a coil long pin forming knife block 3, a die handle 4, a coil short pin forming knife block 5 and an upper base plate 6, wherein at least one of the coil long pin forming knife block 3 and the coil short pin forming knife block 5 is movable and arranged on the first surface of the base plate 6, and the die handle 4 is arranged on the second surface of the upper base plate 6, and the coil long pin forming knife block 3 is provided with a first groove 31, and the coil short pin forming knife block 5 is provided with a second groove 51, and the first groove 31 and the second groove 51 are located at different heights, respectively corresponding to the first pin and the second pin of the vertical hollow coil 7 clamped and sleeved on the coil positioning core 2.

[0024] Among them, at least one of the coil long pin forming knife block 3 and the coil short pin forming knife block 5 is movably set in the first surface of the base plate 6. The movable setting can make the angle between the coil long pin forming knife block 3 and the coil short pin forming knife block 5 adjustable, so that the angle between the coil long pin forming knife block 3 and the coil short pin forming knife block 5 can be adjusted according to the required angle between the first pin and the second pin. It can also be achieved that when the angle between the coil long pin forming knife block 3 and the coil short pin forming knife block 5 cannot correspond to the angle between the first pin and the second pin, the coil long pin forming knife block 3 and / or the coil short pin forming knife block 5 can be adjusted to match them. The angle-adjustable implementation method is that the coil long pin forming knife block 3 and / or the coil short pin forming knife block 5 can be fixed to the first surface of the upper base plate by a detachable connecting component of a single screw or bolt, or one end of the upper part of the coil long pin forming knife block 3 and / or the coil short pin forming knife block 5 can be rotatably connected to the first surface of the upper base plate by a connecting component such as a pin, and then a pin forming adjustment block 13 is connected to the other end of the upper part of the coil long pin forming knife block 3 and / or the coil short pin forming knife block 5 by a screw or bolt. The pin forming adjustment block 13 is mounted on the coil long pin forming knife block 3 and / or the coil short pin forming knife block 5, and the angle of the coil long pin forming knife block 3 and / or the coil short pin forming knife block 5 can be adjusted by rotating the pin forming adjustment block 13.

[0025] The first groove 31 is arranged on the lower bottom surface of the coil long pin forming knife block 3. It is a long U-shaped groove, extending from one side of the bottom surface of the coil long pin forming knife block 3 to the other side, and the cross-section of the groove is arc-shaped, so that it can match the circumferential shape of the pin line. During the pressing process, the paint of the pin line is not easy to fall off.

[0026] like Figure 5 As shown, the second groove 51 is composed of a clamping portion surrounded by two plates of different lengths and staggered in the front-to-back direction that constitute the coil short pin forming knife block 5, wherein the bottom of the short plate is also a smooth plane track with an arc-shaped bottom and a linear top. When in use, the plane track is directly crimped with the short pin of the coil, and the long plate limits the short pin to the left and right.

[0027] The mold handle 4 is also connected to a power mechanism 8 for driving the mold handle to reciprocate, and the power mechanism 8 adopts a cylinder, and the mold handle 4 is fixedly connected to the movable part of the cylinder to provide power to the mold handle. Of course, it is not limited to the cylinder, and a motor can also be implemented.

[0028] The lower mold 1 also includes a coil positioning block 9, on which a coil positioning groove 91 is dug to form an arc-shaped fence for the coil positioning core. The coil positioning core 12 is located in the coil positioning groove 91, and the distance between the inner wall surface of the coil positioning groove 91 and the outer wall of the coil positioning core is not less than the wire diameter of the coil. The coil positioning groove 91 provides a suitable placement space for the coil, and the two pins of the coil can also be led out of the coil positioning groove 91 for easy processing.

[0029] It should be further explained that the coil positioning blocks 9 located on both sides of the coil positioning groove 91 are respectively provided with a first coil pin spacing limiter 92 and a second coil pin spacing limiter 93, and the coil pin spacing limiter is used to limit the relative angle of the two pins after the pins of the coil are bent. The first coil pin spacing limiter 92 and the second coil pin spacing limiter 93 can be implemented in at least two ways. First, it can be a groove of an upper and lower structure directly dug on the coil positioning block 9; second, it can be a protrusion set on the coil positioning block 9, and the protrusion and the side of the coil positioning block constitute a limiting part to limit the left and right positions of the fallen pins.

[0030] A base 10 is also provided below the lower die 1 , and a switch 14 of the cylinder can be provided on the base.

[0031] The device also includes a coil positioning plate 11, which is used to cover the coil after the coil positioning core is placed in the coil. The coil positioning plate can be movably set on the base or the lower mold through a bracket. A connecting component such as a screw or bolt can be used on the upper part of the bracket to rotatably set one end of the coil positioning plate on the bracket. In addition, the end of the coil positioning plate is a flat plate, which is convenient for covering the top of the coil positioning core.

[0032] When the device is in use, the coil 7 is first sleeved on the coil positioning core 12, the position of the coil 7 is adjusted, and then the coil positioning pressing plate 11 is covered, and then the upper mold is pressed down to make the first groove 31 on the coil long pin forming knife block 3 and the second groove on the coil short pin forming knife block 5 align with the first pin on the upper part of the coil 7 and the second pin on the lower part of the coil 7 respectively, and the cylinder switch 14 is turned on and pressed down. After completion, the cylinder is lifted, the coil is taken out, and one coil pin is bent successfully.

[0033] The above embodiments only express the concentrated implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A vertical hollow coil forming device, characterized in that: The invention comprises a lower die (1) and an upper die (2), wherein the lower die (1) is provided with a coil positioning core (12), and a vertical hollow coil (7) can be sleeved on the coil positioning core (12), and the upper die (2) comprises a coil long pin forming knife block (3), a die handle (4), a coil short pin forming knife block (5) and an upper base plate (6), wherein the coil long pin forming knife block (3) and the coil short pin forming knife block (5) are arranged at an angle on the first surface of the upper base plate (6), the die handle (4) is arranged on the second surface of the upper base plate (6), the coil long pin forming knife block (3) is provided with a first groove (31), and the coil short pin forming knife block (5) is provided with a second groove (51), and the first groove (31) and the second groove are located at different heights and correspond to the first pin and the second pin of the vertical hollow coil (7) sleeved on the coil positioning core (12) respectively. The mold handle (4) is also connected to a power mechanism (8) for driving the mold handle to reciprocate.

2. The vertical hollow coil forming device according to claim 1, characterized in that: The power mechanism adopts a cylinder.

3. The vertical hollow coil forming device according to claim 1, characterized in that: The lower die (1) is also provided with a coil positioning block (9), the coil positioning block is provided with an arc-shaped fence-type coil positioning groove (91) for the coil positioning core, the coil positioning core (12) is located in the coil positioning groove (91), and the distance between the inner wall surface of the coil positioning groove (91) and the outer wall of the coil positioning core is not less than the wire diameter of the coil.

4. The vertical hollow coil forming device according to claim 3, characterized in that: The coil positioning blocks located on both sides of the coil positioning groove (91) are each provided with a coil foot spacing limiting portion, and the coil foot spacing limiting portion is used to limit the relative angle of the two pins after the pins of the coil are bent.

5. The vertical hollow coil forming device according to claim 1, characterized in that: A base (10) is also provided below the lower mold (1).

6. The vertical hollow coil forming device according to claim 1, characterized in that: At least one of the coil long pin forming knife block (3) and the coil short pin forming knife block (5) is movably arranged on the first surface of the upper base plate (6).

7. The vertical hollow coil forming device according to claim 1, characterized in that: It also comprises a coil positioning pressing plate (11), wherein the coil positioning pressing plate (11) is used to press and cover the coil after the coil positioning core is placed in the coil.

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