A coil magnetic sheet attaching device

Abstract

This utility model discloses a coil magnetic sheet bonding device, relating to the field of coil magnetic sheet bonding technology. The bonding device includes a main support, on which a worktable, a turntable, and an angle-limiting rotation mechanism are mounted. A coil fixture is mounted on the worktable, and the coil fixture has multiple first placement slots matching the shape of the coil. The turntable is located above the coil fixture, and a bonding drive component is mounted on the turntable. A magnetic sheet fixture corresponding to the coil fixture is mounted on the bonding drive component. The bonding drive component drives the magnetic sheet fixture to move linearly towards or away from the coil fixture. The magnetic sheet fixture has multiple second placement slots matching the shape of the magnetic sheet, and each second placement slot has multiple vacuum suction holes. The angle-limiting rotation mechanism is connected to the turntable and drives the turntable to rotate. This bonding device improves the assembly efficiency of coils and magnetic sheets.

Description

Technical Field

[0001] This utility model relates to the field of coil magnetic sheet bonding technology, and in particular to a coil magnetic sheet bonding device. Background Technology

[0002] Wireless charging coils are the core components for wireless power transmission. Essentially, they are coil assemblies that transfer energy through physical principles such as electromagnetic induction. A wireless charging coil typically consists of a coil body, a magnetic sheet, and a shielding layer. The coil body is wound with enameled wire (copper conductor), commonly in a planar circular shape. The magnetic sheet, made of ferrite, is attached to the back of the coil body to concentrate the magnetic field, reduce magnetic leakage, and improve energy transmission efficiency. Currently, the assembly of the coil body and magnetic sheet is usually done manually. First, the operator places the coil in a designated coil fixture for positioning. Next, the magnetic sheet is fixed in a designated magnetic sheet fixture for positioning. Then, the magnetic sheet fixture is flipped over to cover the coil fixture, thus attaching the coil to a pre-set sticker on the magnetic sheet. Finally, the magnetic sheet fixture with the coil and magnetic sheet is moved to a pressing device for pressing, ensuring complete adhesion between the coil and magnetic sheet. This assembly method involves numerous steps, frequent fixture switching, and is time-consuming, resulting in low assembly efficiency for the coil and magnetic sheet. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a coil and magnetic sheet bonding device to improve the assembly efficiency of coil and magnetic sheet.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A coil magnetic sheet bonding device includes a main support, a worktable, a turntable, and an angle-limiting rotation mechanism on the main support. A coil fixture is provided on the worktable, and the coil fixture has multiple first placement slots that match the shape of the coil. The turntable is located above the coil fixture, and a bonding drive is installed on the turntable. A magnetic sheet fixture corresponding to the coil fixture is installed on the bonding drive. The bonding drive is used to drive the magnetic sheet fixture to move linearly toward or away from the coil fixture. The magnetic sheet fixture has multiple second placement slots that match the shape of the magnetic sheet. Each second placement slot has multiple vacuum suction holes. The angle-limiting rotation mechanism is connected to the turntable and is used to drive the turntable to rotate.

[0006] In some embodiments, the angle-limiting rotation mechanism includes a dustproof sleeve, a first drive cylinder, a rotating shaft, a gear, and a rack. The dustproof sleeve and the first drive cylinder are mounted on the back side of the main support. The rotating shaft is rotatably mounted on the dustproof sleeve. The gear is sleeved on the rotating shaft and connected to the rotating shaft by a key. A limiting protrusion is provided on the outer edge of the gear. The dustproof sleeve is provided with a semi-circular through hole that allows the limiting protrusion to rotate 180°. Two limiting screws are provided on the planar sidewall of the semi-circular through hole. The limiting screws are threadedly connected to the dustproof sleeve. The ends of the limiting screws are used to abut against the limiting protrusion to limit its rotation angle range to 0 to 180°. Bearings are provided on both ends of the gear on the rotating shaft. One end of the rotating shaft passes through the dustproof sleeve and the main support and is fixedly connected to the turntable. The rack moves through the dustproof sleeve and meshes with the gear. One end of the rack is connected to the output end of the first drive cylinder.

[0007] Compared with the prior art, this utility model achieves at least the following beneficial effects:

[0008] In use, this invention simply requires placing the coil with pre-applied double-sided adhesive on the back into the first slot of the coil fixture, and the magnetic sheet into the second slot of the magnetic sheet fixture. The angle-limiting rotation mechanism drives the turntable to rotate, thereby causing the magnetic sheet fixture and the magnetic sheet to automatically rotate at a certain angle until the magnetic sheet fixture is parallel to the coil fixture. Then, the bonding drive drives the magnetic sheet fixture to move linearly toward the coil fixture, so that the magnetic sheet fixture and the coil fixture are automatically pressed together, ensuring that the magnetic sheet can be firmly attached to the double-sided adhesive on the back of the coil. This invention has a high degree of automation. Compared with existing assembly methods, it eliminates the need for operators to frequently switch operating fixtures, reduces assembly difficulty, and improves the assembly efficiency of the coil and magnetic sheet. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the coil fixture of this utility model;

[0011] Figure 3 This is a schematic diagram of the magnetic sheet fixture of this utility model;

[0012] Figure 4 This is an exploded structural diagram of the angle-limiting rotation mechanism of this utility model;

[0013] Figure 5 This is a schematic diagram of the connection structure between the rotating shaft and the turntable of this utility model.

[0014] The diagram is labeled as follows: 1. Main support; 2. Workbench; 21. First positioning post; 3. Turntable; 31. Countersunk hole; 32. Positioning slot; 33. Positioning hole; 4. Angle-limiting rotation mechanism; 41. Dustproof sleeve; 411. Semi-circular through hole; 42. First drive cylinder; 43. Rotating shaft; 44. Gear; 441. Limiting protrusion; 45. Rack; 451. T-shaped locking block; 5. Coil fixture; 51. First placement slot; 52. Second positioning post; 6. Fitting 7. Drive component; 8. Magnetic sheet fixture; 9. Second placement slot; 10. Vacuum suction hole; 11. Negative pressure channel; 12. Second positioning slot; 13. Limit screw; 14. Bearing; 15. Connecting block; 16. T-slot; 27. Connecting plate; 20. Screw hole; 20. Positioning block; 20. Positioning shaft; 30. Threaded air pipe quick connector; 41. Base; 52. Solenoid valve assembly; 63. Button assembly; 74. Coil; 75. Double-sided adhesive; 86. Magnetic sheet. Detailed Implementation

[0015] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of this application more complete and to fully convey the concept of the present application to those skilled in the art.

[0016] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0017] like Figures 1-5As shown, the coil magnetic sheet bonding device provided in this embodiment includes a main support 1 and a base 40. The main support 1 is vertically fixed on the base 40. The main support 1 is provided with a worktable 2, a turntable 3, and an angle-limiting rotation mechanism 4. The worktable 2 is provided with a coil fixture 5. The coil fixture 5 is provided with a plurality of first placement slots 51 that match the shape of the coil 70. The turntable 3 is located above the coil fixture 5. A bonding drive 6 is installed on the turntable 3. A magnetic sheet fixture 7 corresponding to the coil fixture 5 is installed on the bonding drive 6. Optionally, the bonding drive 6 is a cylinder. The bonding drive 6 is used to drive the magnetic sheet fixture 7 to move linearly toward or away from the coil fixture 5. The magnetic sheet fixture 7 is provided with a plurality of second placement slots 71 that match the shape of the magnetic sheet 80. Each second placement slot 71 is provided with a plurality of vacuum suction holes 711. The angle limiting rotation mechanism 4 is connected to the turntable 3 and is used to drive the turntable 3 to rotate. The base 40 is equipped with a solenoid valve assembly 50 and a button assembly 60. The solenoid valve assembly 50 is used to realize the automatic control of the pneumatic system of the bonding device, and the button assembly 60 is used to control the start and stop of the bonding device.

[0018] In use, the coil 70 with double-sided adhesive 701 pre-attached to its back is first placed in the first placement slot 51 of the coil fixture 5, and the magnetic sheet 80 is placed in the second placement slot 71 of the magnetic sheet fixture 7. The magnetic sheet 80 is then held in place by the vacuum suction hole 711. Next, the angle limiting rotation mechanism 4 drives the turntable 3 to rotate, thereby causing the magnetic sheet fixture 7 and the magnetic sheet 80 to rotate at a certain angle until the magnetic sheet fixture 7 is parallel to the coil fixture 5. Then, the bonding drive 6 drives the magnetic sheet fixture 7 to move in a straight line toward the coil fixture 5. The magnetic sheet fixture 7 and the coil fixture 5 are pressed together to ensure that the magnetic sheet 80 can be firmly attached to the double-sided adhesive 701 on the back of the coil 70. Finally, the vacuum suction hole 711 releases the vacuum adsorption of the magnetic sheet 80, and the bonding drive 6 drives the magnetic sheet fixture 7 to move linearly away from the coil fixture 5, thus completing one assembly and bonding of the coil 70 and the magnetic sheet 80. The bonding is firm. Compared with the existing manual assembly method, there is no need for operators to frequently switch fixtures, which reduces the assembly difficulty and improves the assembly efficiency of the coil 70 and the magnetic sheet 80.

[0019] refer to Figure 4The angle-limiting rotation mechanism 4 includes a dustproof sleeve 41, a first drive cylinder 42, a rotating shaft 43, a gear 44, and a rack 45. The dustproof sleeve 41 and the first drive cylinder 42 are mounted on the back side of the main support 1. The rotating shaft 43 is rotatably mounted on the dustproof sleeve. The gear 44 is sleeved on the rotating shaft 43 and connected to the rotating shaft 43 by a key. The outer edge of the gear 44 is provided with a limiting protrusion 441. The dustproof sleeve 41 is provided with a semi-circular through hole 411 that allows the limiting protrusion 441 to rotate 180°. Two limiting screws 8 are threaded through the flat sidewall and connected to the dustproof sleeve 41. The ends of the limiting screws 8 are used to abut against the limiting protrusions 441, thereby limiting the rotation angle range to 0-180°. Bearings 9 are provided at both ends of the gear 44 on the rotating shaft 43, and one end of the rotating shaft 43 passes through the dustproof sleeve and the main bracket 1 and is fixedly connected to the turntable 3. The rack 45 moves through the dustproof sleeve 41 and meshes with the gear 44, and one end of the rack 45 is connected to the output end of the first drive cylinder 42. Optionally, the output end of the first drive cylinder 42 is provided with a connecting block 10, and a T-slot 101 is opened on the connecting block 10; one end of the rack 45 is provided with a T-shaped locking block 451 that connects to the T-slot 101. When the angle limiting rotation mechanism 4 is working, the first drive cylinder 42 drives the rack 45 to move linearly through the connecting block 10. Since the rack 45 meshes with the gear 44, it drives the gear 44 to rotate. The limiting protrusion 441 on the gear 44 rotates in the semi-circular through hole 411. When the limiting protrusion 441 rotates to the plane side wall of the semi-circular through hole 411, it is blocked by the end of the limiting screw 8, thereby limiting the rotation angle of the limiting protrusion 441, that is, limiting the rotation angle of the gear 44, the rotating shaft 43, the turntable 3 and the magnetic sheet fixture 7. The semi-circular through hole 411 and the limiting screw 8 can limit the angle range to 0 to 180°, and can rotate to fine adjust the position of the end of the limiting screw 8, thereby fine adjusting the rotation angle range of the limiting protrusion 441. Before placing the magnetic sheet 80 into the second placement slot 71 of the magnetic sheet fixture 7, the angle limiting rotation mechanism 4 can drive the magnetic sheet fixture 7 to rotate until the second placement slot 71 is open and facing upwards, making it convenient for the operator to place the magnetic sheet 80. Then, rotate it 180° to make the magnetic sheet fixture 7 parallel to the coil fixture 5, and then perform the pressing action.

[0020] refer to Figure 4 and Figure 5Optionally, the turntable 3 is provided with multiple countersunk holes 31; the end of the rotating shaft 43 that passes through the dustproof sleeve and the main bracket 1 is provided with a connecting plate 20, and the connecting plate 20 is provided with multiple screw holes 201 corresponding to the countersunk holes 31, so that the connecting plate 20 and the turntable 3 are fixedly connected by screws. The turntable 3 is also provided with a positioning slot 32 and a positioning hole 33, and the positioning hole 33 is located at the bottom of the slot of the positioning slot 32; the connecting plate 20 is provided with a positioning block 202 that matches the shape of the positioning slot 32, and a positioning shaft 203 that matches the shape of the positioning hole 33. By the positioning block 202 and the positioning shaft 203 respectively cooperating with the positioning slot 32 and the positioning hole 33, the precise docking of the connecting plate 20 and the turntable 3 is achieved.

[0021] refer to Figure 3 Optionally, the magnetic sheet fixture 7 is provided with a negative pressure channel 72 that is connected to the vacuum suction hole 711. The open end of the negative pressure channel 72 is connected to a threaded air tube quick connector 30. The threaded air tube quick connector 30 is connected to an external vacuum generator through an air tube. The vacuum generator generates a vacuum environment, which enables the vacuum suction hole 711 to attract the magnetic sheet 80.

[0022] refer to Figure 2 The worktable 2 is provided with multiple first positioning posts 21; the bottom of the coil fixture 5 is provided with multiple first positioning slots (not shown in the figure) that match the first positioning posts 21. The first positioning posts 21 are used to insert into the first positioning slots of the coil fixture 5, thereby achieving precise positioning of the coil fixture 5 on the worktable 2.

[0023] The top of the coil fixture 5 is provided with multiple second positioning posts 52; the bottom of the magnetic sheet fixture 7 is provided with multiple second positioning grooves 73 that match the second positioning posts 52. When the magnetic sheet fixture 7 moves down and fits against the coil fixture 5, the second positioning posts 52 are inserted into the second positioning grooves 73, thereby enabling precise positioning of the magnetic sheet fixture 7.

[0024] It should be understood that all the above embodiments are exemplary and not restrictive. Any modifications, equivalent changes and alterations made by those skilled in the art to the specific embodiments described above under the concept of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A coil magnetic sheet bonding device, characterized in that: The device includes a main support frame, on which a worktable, a turntable, and an angle-limiting rotation mechanism are mounted. A coil fixture is mounted on the worktable, and the coil fixture has multiple first placement slots matching the shape of the coils. The turntable is located above the coil fixture, and a bonding drive is mounted on the turntable. A magnetic sheet fixture corresponding to the coil fixture is mounted on the bonding drive, which drives the magnetic sheet fixture to move linearly toward or away from the coil fixture. The magnetic sheet fixture has multiple second placement slots matching the shape of the magnetic sheets, and each second placement slot has multiple vacuum suction holes. The angle-limiting rotation mechanism is connected to the turntable and drives the turntable to rotate.

2. The coil magnetic sheet bonding device according to claim 1, characterized in that: The angle-limiting rotation mechanism includes a dustproof sleeve, a first drive cylinder, a rotating shaft, a gear, and a rack. The dustproof sleeve and the first drive cylinder are mounted on the back side of the main support. The rotating shaft is rotatably mounted on the dustproof sleeve. The gear is sleeved on the rotating shaft and connected to the rotating shaft via a key. The outer edge of the gear is provided with a limiting protrusion. The dustproof sleeve is provided with a semi-circular through hole that allows the limiting protrusion to rotate 180°. Two limiting screws are inserted through the planar sidewall of the semi-circular through hole. The limiting screws are threadedly connected to the dustproof sleeve. The ends of the limiting screws are used to abut against the limiting protrusion, thereby limiting its rotation angle range to 0-180°. Bearings are provided at both ends of the gear on the rotating shaft. One end of the rotating shaft passes through the dustproof sleeve and the main support and is fixedly connected to the turntable. The rack moves through the dustproof sleeve and meshes with the gear. One end of the rack is connected to the output end of the first drive cylinder.

3. The coil magnetic sheet bonding device according to claim 2, characterized in that: The output end of the first drive cylinder is provided with a connecting block, and the connecting block has a T-slot; one end of the rack is provided with a T-shaped locking block that connects to the T-slot.

4. The coil magnetic sheet bonding device according to claim 2, characterized in that: The turntable has multiple countersunk holes; the end of the rotating shaft that passes through the dustproof sleeve and the main bracket has a connecting plate, and the connecting plate has multiple screw holes corresponding to the countersunk holes.

5. The coil magnetic sheet bonding device according to claim 4, characterized in that: The turntable is also provided with a positioning slot and a positioning hole, the positioning hole being located at the bottom of the positioning slot; the connecting plate is provided with a positioning block that matches the shape of the positioning slot and a positioning shaft that matches the shape of the positioning hole.

6. The coil magnetic sheet bonding device according to claim 1, characterized in that: The magnetic sheet fixture is provided with a negative pressure channel that communicates with the vacuum suction hole. The open end of the negative pressure channel is connected to a threaded quick-connect fitting for an air tube, and the threaded quick-connect fitting for an air tube is connected to an external vacuum generator through an air tube.

7. The coil magnetic sheet bonding device according to claim 1, characterized in that: The workbench is provided with a plurality of first positioning posts; the bottom of the coil fixture is provided with a plurality of first positioning grooves that match the first positioning posts.

8. The coil magnetic sheet bonding device according to claim 7, characterized in that: The top of the coil fixture is provided with multiple second positioning posts; the bottom of the magnetic sheet fixture is provided with multiple second positioning grooves that match the second positioning posts.

9. The coil magnetic sheet bonding device according to claim 1, characterized in that: The bonding drive component is a cylinder.

10. The coil magnetic sheet bonding device according to claim 1, characterized in that: It also includes a base, on which the main support is erected and fixed, and on which a solenoid valve assembly and a button assembly are installed.

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