CN105304320B - Winding machine, wireless charging coil and manufacturing process thereof - Google Patents

Abstract

The invention provides a winding machine, which is used for winding a coil on a substrate, wherein an adhesive layer is coated on the substrate. The winding machine comprises a winding device body, a controller and a wire feeding device, the winding device body comprises a winding portion and a moving portion, the moving portion comprises a first moving portion and a second moving portion, a base plate is connected with the first moving portion, the winding portion is connected with the second moving portion, the winding portion comprises a wire nozzle and a wire pressing wheel, the controller is used for storing a winding path and controlling the movement of the moving portion, and the wire feeding device conveys a wire to the wire nozzle. The first motion portion makes the base plate move according to the route of winding under the control of controller, and the second motion portion makes the line mouth lay wire on the viscose layer according to the route of winding under the control of controller, makes the fabric wheel compress tightly the wire rod in the viscose layer in order to make wireless charging coil simultaneously, and the trimming device cuts off terminal wire rod. The invention also provides a wireless charging coil and a manufacturing process thereof. The invention improves the adhesion degree of the coil and the substrate, realizes instant positioning, and ensures that the coil is not easy to fall off and is more durable.

Description

Winding machine, wireless charging coil and manufacturing process thereof

technical field

The invention relates to a winding machine, a wireless charging coil and a manufacturing process thereof.

Background technique

In recent decades, with the advancement of large-scale integrated circuits and chip technology, electronic products have developed towards multi-function, miniaturization, portability, and wearability. The above-mentioned trends pose challenges to the supply and supplement of electrical energy for electronic devices. When the electric energy stored inside the electronic device is insufficient, the user needs to use a charging device to supplement the electric energy. Traditional charging devices are all wire charging devices, which need to be connected to the grid by wire. This kind of linear equipment is not only inconvenient to use, but also causes huge waste due to repeated manufacturing caused by mutual incompatibility. Wireless charging technology was proposed under this background and has become a current research hotspot. Wireless charging, also known as inductive charging, magnetic vibration wireless charging, the first is to use near magnetic field induction, the power supply equipment (charger) transmits energy to the device that uses electricity, and the device uses the received energy to charge the battery. and at the same time for its own operation. Since the energy is transmitted between the charger and the electrical device through inductive coupling, the two are not connected by wires, and are charged by electromagnetic induction (tight coupling). The second is based on wireless power transmission technology, which uses magnetic resonance to transmit charges in the air between the charger and the device, and coils and capacitors form resonance between the charger and the device to achieve efficient power transmission (song coupling).

The main component involved in the wireless charging device is the coil module. The transmitting end and the receiving end need to use the inductance of the coil to complete the power induction transmission. Therefore, the advanced manufacturing process and technology of the inductive coil has become the development of wireless charging. key.

There are two types of wireless charging coils on the market - electromagnetic induction charging coils (tight coupling) and magnetic field resonance charging coils (loose coupling). Tightly coupled coils are tightly wound by copper wires, and loosely coupled coils are loosely wound by copper wires. The manufacturing process of both is to stick the coils on the magnetic sheet with tape/glue after the coils are wound. In this way, there are three major defects: 1. The coil is glued to the magnetic sheet by adhesive tape/glue. This bonding method makes the service life of the product not long and the bonding will be unstable if used for a long time; 2. The wireless charging coil needs to be positioned twice in the production process, one is when winding the wire, and the second is to stick the coil to the substrate through adhesive tape/glue, which needs to be positioned, which brings more hidden dangers to quality and automation 3. When the loosely coupled coil is made, it is loosely wound by copper wires, and due to the loose shape, it is easy to deform.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a winding machine, a wireless charging coil and its manufacturing process, so that the coil and the substrate are firmly bonded, and only one positioning is required in the manufacturing process, which reduces the quality. Hidden dangers and improved automation capabilities.

In order to solve the above problems, the present invention provides the following technical solutions.

In one aspect, the present invention provides a winding machine for winding a wireless charging coil on a substrate coated with an adhesive layer, characterized in that the winding machine includes a winding device and a controller and a wire feeding device, the winding device includes a winding part and a moving part, the moving part includes a first moving part and a second moving part, the substrate is connected to the first moving part, and the winding part and the second moving part part, the winding part includes a wire nozzle and a crimping wheel, the controller is used to store the winding path and control the movement of the moving part, the wire feeding device conveys the wire to the wire nozzle, the The first moving part moves the substrate according to the winding path under the control of the controller, and the second moving part moves the nozzle on the adhesive layer according to the winding path under the control of the controller Wiring, and at the same time, the wire crimping wheel is pressed against the adhesive layer, and the wire cutting device cuts off the end wire.

Further, the winding machine includes a heating device for heating the substrate, so that the wire sticks to the adhesive layer.

Further, the substrate is installed on the first moving part and moves along the Y-axis direction relative to the first moving part.

Further, the second moving part includes a first moving structure, a second moving structure and a third moving structure, the second moving structure is movably installed on the first moving structure, and the third moving structure is movably installed in the second kinematic structure.

Further, the second moving structure moves along the X-axis direction relative to the first moving structure, and the third moving structure moves along the Z-axis direction relative to the second moving structure and can move relative to the second moving structure angle of rotation.

Further, the wire nozzle and the crimping wheel are installed on the third moving structure.

In another aspect, the present invention provides a wireless charging coil, which includes a substrate, an adhesive layer, and a coil wound by the above-mentioned winding machine, the substrate is fixedly connected to the adhesive layer, and the coil is partially embedded The adhesive layer is thus fixed on the substrate.

On the other hand, the present invention also provides a manufacturing process of a wireless charging coil, comprising the following steps:

1) Provide the substrate;

2) Apply an adhesive layer on the substrate;

3) Input the winding path into the controller;

4) Send the wire to the nozzle;

5) The first moving part moves the substrate according to the winding path under the control of the controller, and the second moving part makes the wire nozzle wire on the adhesive layer according to the winding path under the control of the controller, and at the same time makes the crimping wire The wheel presses the wire against the adhesive layer to make a wireless charging coil;

6) Cut off the end wire.

Further, in the above step 5, heating the substrate is also included.

In the wire winding machine of the present invention, while the wire nozzle is wiring, the crimping wheel presses the wire rod tightly on the adhesive layer on the substrate, so that the coil part is embedded in the adhesive layer, which improves the adhesion between the coil and the substrate, and realizes instant positioning. Make the coil not easy to fall off, prolong the life of the infinite charging coil, and make the wireless charging coil more durable; and only one positioning is required in the production process of the wireless charging coil, ensuring the precise arrangement between the windings, reducing the hidden danger of quality and improving the automation ability, production The process is simple, the production efficiency is improved, and the production cost is reduced.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings used in the implementation will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For a skilled person, other drawings can also be obtained from these drawings on the premise of not paying creative work.

Fig. 1 is a three-dimensional schematic view of the winding machine of the present invention.

FIG. 2 is an enlarged view of the circle II portion in FIG. 1 .

Fig. 3 is a schematic structural diagram of the first embodiment of the wireless charging coil of the present invention;

Fig. 4 is a sectional view along the line A-A in Fig. 3;

5 is a schematic structural diagram of a second embodiment of the wireless charging coil of the present invention;

6 is a cross-sectional structure diagram of a coil copper wire in an embodiment of a wireless charging coil according to the present invention;

Fig. 7 is a flow chart of the manufacturing process of the wireless charging coil embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. The above description is a preferred embodiment of the present invention, and it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

Please refer to FIG. 1 and FIG. 4 , which are three-dimensional schematic diagrams of the winding machine 100 of the present invention. The winding machine 100 of the present invention is used to wind the coil 3 on the substrate 1 coated with the adhesive layer 2 to form a wireless charging coil.

In this embodiment, two layers of glue are applied to the outer surface of the substrate 1 . In other embodiments, the substrate 1 is provided with a receiving groove, and the adhesive layer 2 is coated on the inner surface of the receiving groove. The accommodation groove on the substrate 1 is set according to the winding path of the coil on the substrate.

Please refer to FIG. 1, FIG. 2 and FIG. 4, the winding machine 100 includes a winding device 10, a controller 20, a wire feeding device 30 and a wire cutting device (not shown), and the winding device 10 includes a winding part 12 and a moving part 13, the moving part 13 includes a first moving part 132 and a second moving part 134, the substrate 1 is connected to the first moving part 132, and the winding part 12 is connected to the second moving part 134, so The winding part 12 includes a wire nozzle 122 and a crimping wheel 124, the controller 20 is used to store the winding path and control the movement of the moving part 13, and the wire feeding device 30 conveys the wire to the wire nozzle 122, the first moving part 132 moves the substrate 1 according to the winding path under the control of the controller 20, and the second moving part 134 makes the nozzle 122 wires on the adhesive layer 2 according to the winding path, and at the same time, the crimping wheel 124 presses the wire on the adhesive layer 2 to form the coil 3 , and the wire cutting device cuts the end wire of the coil 3 .

Because the wire nozzle 122 is wiring on the adhesive layer 2, the crimping wheel 124 presses the wire against the adhesive layer 2, so that the coil 3 is partially embedded in the adhesive layer 2, which improves the adhesion between the coil 3 and the substrate 1 , Realize instant positioning, make the coil 3 not easy to fall off, increase the life of the wireless charging coil, and make the wireless charging coil more durable.

Further, the winding machine 100 includes a heating device (not shown) for heating the substrate, so that the wire sticks to the adhesive layer 2 .

Because the substrate 1 is heated during the wiring process, it is easier to adhere between the adhesive layer 2 and the substrate 1 and between the wire and the adhesive layer.

Further, the substrate 1 is installed on the first moving part 132 and moves relative to the first moving part 132 along the Y-axis direction. The second moving part 134 includes a first moving structure 133, a second moving structure 135 and a third moving structure 137, the second moving structure 135 is movably installed on the first moving structure 133, and the third moving structure The structure 137 is movably mounted on the second moving structure 135 . The second moving structure 135 moves along the X-axis direction relative to the first moving structure 133, and the third moving structure 137 moves along the Z-axis direction relative to the second moving structure 135 and can move relative to the second moving structure 133. The kinematic structure 135 rotates the angle. The thread nozzle 122 and the crimping wheel 124 are installed on the third moving structure 137 .

In this embodiment, the third moving structure 137 can rotate within a range of 360 degrees.

Because the second kinematic structure 135 can move along the X-axis direction relative to the first kinematic structure 133, the third kinematic structure 137 can move along the Z-axis direction relative to the second kinematic structure 135 and can move relative to the second kinematic structure 135. Rotation angle, that is, the third moving structure 137 can move in the X-axis direction and the Z-axis direction and can rotate the angle, and at the same time, the substrate 1 can move in the Y-axis direction, and the wire nozzle 122 and the crimping wheel 124 are installed Because of the third movement structure 137, that is, the wire nozzle 122 and the crimping wheel 124 can move arbitrarily in the X-axis and Z-axis directions and can rotate arbitrarily within a range of 360 degrees, while the substrate can move arbitrarily in the Y-axis direction , so that the winding machine 100 of the present invention can wind a coil of any shape.

During use, under the control of the controller 20, the second moving part 134 moves the winding part 12 according to the stored winding path, so that the wire nozzle 122 wires on the adhesive layer 2 according to the stored winding path, And the crimping wheel 124 presses the wire rod on the adhesive layer 2 . At the same time, under the control of the controller 20 , the first moving part 132 moves the substrate 1 according to the stored winding path.

Because the wire winding machine 100 of the present invention is wiring on the viscose layer 2, the crimping wheel 124 simultaneously presses the laid wires onto the viscose layer 2 to realize instant positioning, which is not easy to fall off and prolongs the life of the wireless charging coil , making the wireless charging coil more durable. At the same time, because the coil is only positioned once during the winding process, the winding path of the coil is controlled by the controller 20 to ensure the precise arrangement of the windings, reduce the hidden dangers of quality and improve the automation ability, the production process is simple, and the production efficiency is improved. , reducing production costs.

Referring to Fig. 3, Fig. 4 and Fig. 5, it is a wireless charging coil of the present invention, which includes a substrate 1, an adhesive layer 2 and a coil 3, the substrate 1 is fixedly connected to the adhesive layer 2, and the coil 3 is partially embedded in the adhesive layer 2 so as to be fixed on the substrate 1. Beneficial effects of this technical solution: the coil 3 is partially embedded in the adhesive layer 2, which improves the adhesion between the coil 3 and the substrate 1, realizes instant positioning, is not easy to fall off, increases the life of the wireless charging coil, and makes the wireless charging coil more durable.

In this embodiment, the substrate 1 is bonded to the adhesive layer 2 .

The coil 3 is covered with a protective film 4, and the protective film 4 protects the surface of the coil 3 from damage. The material of the protective film 4 is epoxy resin, which is not easy to be scratched. In other embodiments, there is no protective film 4 on the coil 3 .

Referring to Fig. 3 and Fig. 5, the coil 3 can be tightly wound or loosely wound by copper wire 31 to make an electromagnetic induction charging coil (tightly coupled) or a magnetic field resonance charging coil (loosely coupled), and the copper wire 31 The two ends 32 of each protrude from the edge of the adhesive layer 2 .

Referring to FIG. 6 , the copper wire 31 includes a bare copper wire 311 , a protective layer 312 and a self-adhesive layer 313 , and is arranged from inside to outside. The protective layer 312 protects the inner bare copper wire 311 from damage, and the self-adhesive layer 313 can soften and adhere to the adhesive layer 2 when heated.

In other embodiments, the copper wire is bare copper wire or wire-clad copper. The wire-clad copper includes bare copper wire, protective layer and nylon wire.

In this embodiment, the cross section of the copper wire 31 may be circular, elliptical, rectangular or triangular.

The substrate is fiberboard or magnetic sheet, but not limited thereto.

Referring to Fig. 1, Fig. 2 and Fig. 7, a manufacturing process of a wireless charging coil includes the following steps:

Step 1, providing a substrate 1;

Step 2, coating the adhesive layer 2 on the substrate 1 .

Step 3, inputting the winding path into the controller 20;

Step 4, sending the wire rod to the nozzle 122;

Step 5, the first moving part 132 moves the substrate 1 according to the winding path under the control of the controller 20, and the second moving part 134 guides the wire nozzle 122 to wire on the adhesive layer 2 under the control of the controller 20, and at the same time makes the The crimping wheel 124 presses the wire against the adhesive layer 2 to make a wireless charging coil;

Step 6, cut off the end wire.

In this embodiment, the wire feeding device 30 feeds the wire to the nozzle 122, and the wire cutting device cuts the end wire of the wireless charging coil.

It also includes cutting the substrate 1 before step 1, specifically: inputting the cutting three-dimensional coordinate data into the numerical control cutting machine to cut the substrate 1 according to the cutting path through the numerical control cutting machine; the substrate 1 can be cut into circles, squares, rectangles or Triangle, but not limited thereto, can be cut into any shape as required; and clean the surface of the substrate 1 to remove oil and dust, that is, clean the surface of the substrate 1 .

In step 5, it also includes heating the substrate 1 , that is, heating the substrate 1 while the wire nozzle 122 is wiring on the adhesive layer 1 and the crimping wheel 124 presses the wire against the adhesive layer 2 . In the present invention, the substrate is heated by a heating device, and the heating device is located under the substrate. That is to say, the present invention heats the substrate 1 during the wiring process, so that the adhesion between the adhesive layer 2 and the substrate 1 and between the wire and the adhesive layer is easier.

With this technical solution, the coil 3 is partially embedded in the adhesive layer 2, which improves the adhesion between the coil 3 and the substrate 1, makes the coil not easy to fall off, prolongs the life of the infinite charging coil, and makes the wireless charging coil more durable; And compared with the traditional manufacturing process that needs two positionings (one is to be positioned when winding the wire, and the second is to stick the coil on the substrate by adhesive tape/glue and needs to be positioned), the present invention only needs one positioning (that is, the wire needs to be positioned). Nozzle 122 guides the copper wires to be routed on the adhesive layer 2), which not only ensures the precise arrangement between the windings, but also reduces the hidden dangers of quality and improves the automation capability. The production process is simple, the production efficiency is improved, and the production cost is reduced.

The manufacturing process of the wireless charging coil also includes testing the dimensional accuracy of the coil 3 completed in step 5, and the testing parameters include the arrangement of the coils, the spacing of the copper wires, and the accuracy of the R angle (radius value of the arc angle). When it is detected that the size of the product exceeds the allowable error range, the winding path input to the controller 20 is modified in time, so that the qualified rate of the product can be improved. That is to say, in the production process, the present invention continuously improves the winding path of the wireless charging coil, so that the product qualification rate of the wireless charging coil produced by the manufacturing process of the present invention is higher, and the production efficiency is improved.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (3)

1. a kind of coil winding machine, for the coiling on substrate, adhesive-layer is scribbled on the substrate, it is characterised in that it is described around Line machine includes bobbin winder device, controller, wire-sending device and cutting facility, and the bobbin winder device includes winding section and movement portion, institute Stating movement portion includes the first movement portion and the second movement portion, and the substrate is connected with the first movement portion, the winding section and The second movement portion connection, the winding section include line mouth and fabric wheel, and the controller is used to store around thread path and control The movement in the movement portion is made, wire rod is conveyed to the line mouth by the wire-sending device, and the first movement portion is in the control The substrate is set to be moved according to around thread path under the control of device, the second movement portion makes described under the control of the controller Line mouth is connected up according to around thread path on adhesive-layer, while makes the fabric wheel that wire rod is pressed in adhesive-layer, the trimming dress To put and cut end wire rod, the coil winding machine includes being used for the heating unit heated the substrate, so that wire rod is adhered to the adhesive-layer, The substrate is installed on the first movement portion and relatively described first movement portion and is moved along Y direction, the second movement portion Including the first motion structure, the second motion structure and the 3rd motion structure, second motion structure is movably arranged in described First motion structure, the 3rd motion structure are movably arranged in second motion structure, the second motion structure phase Moved in the X-axis direction for first motion structure, the 3rd motion structure is relative to second motion structure along Z axis Direction movement and can relatively described second motion structure rotational angle, the line mouth and the fabric wheel are installed on the described 3rd and transport Dynamic structure.

2. a kind of Wireless charging coil, it is characterised in that including substrate, adhesive-layer and utilize coiling as claimed in claim 1 The coil that machine turns to, the substrate are fixedly connected with the adhesive-layer, the coiler part be embedded in the adhesive-layer so as to It is fixed on substrate.

3. the technique that a kind of coil winding machine using described in claim 1 makes Wireless charging coil, it is characterised in that including following Step：

1) substrate is provided；

2) the coating viscosity glue layer on substrate；

3) will be around thread path input controller；

4) wire rod is sent to line mouth；

5) the first movement portion makes substrate be moved according to around thread path under the control of the controller, and the second movement portion is in the controller Control under line mouth is connected up according to around thread path on adhesive-layer, give substrate heating, while fabric wheel is pressed in wire rod Adhesive-layer, Wireless charging coil is made；

6) end wire rod is cut.