Actuator and manufacturing method of circuit board thereof

Abstract

The invention discloses an actuator and a manufacturing method of a circuit board of the actuator. The manufacturing method comprises the following steps: step 1, taking a first circuit structural member with a plurality of circuit lines; step 2, carrying out patch production on the first circuit structural member, respectively welding and fixing an electronic component on each circuit line, and finally obtaining a second circuit structural member with the electronic component; the electronic component comprises a coil; wherein before the patch production is carried out, the coil shaping jig is used for shaping wire ends at the two ends of the coil in advance, then the coil positioning jig is used for positioning the coil and a circuit line on the first circuit structural member, and then the patch production is carried out; and step 3, dividing the second circuit structural member obtained in the step 2 into independent actuator circuit boards with electronic components and circuit lines. Therefore, the production efficiency can be greatly improved, and the performance of an electronic product is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic product production, and particularly relates to a manufacturing method of an actuator and a circuit board thereof. BACKGROUND

[0002] An actuator is usually arranged in an existing electronic product, for example, in a camera module, the actuator is used to control the movement of a lens module. During the production and manufacturing of the actuator, a plurality of coils are usually assembled and welded on a single circuit board. However, the following problems exist in the existing coil welding process. Firstly, before welding, the wire ends at both ends of the coil need to be drawn out and then welded and connected with the circuit board or a conductive sheet. After the existing coil is wound and formed, the wire ends at both ends often present different angles and directions. In particular, for small coils, if the wire ends are not shaped, the electrical connection performance during subsequent welding with the circuit board cannot be ensured. Therefore, in the prior art, the wire ends of the coil are usually manually adjusted and shaped to the required angle and position under a microscope by using a cotton swab. However, manual operation is time-consuming and laborious, and has low efficiency and high working intensity.

[0003] Secondly, during the welding of the coil, the coil often deviates, resulting in welding defects. Therefore, in the prior art, a jig is used to position the coil. However, the existing jig usually sets a positioning groove to position the outer contour of the coil. Since the outer diameter of the coil may be swollen or inconsistent due to the elasticity of the wire during the winding production of the coil, the position of the coil welded to the circuit board after being positioned by the existing jig still has partial deviation, so that the relative position between the coil and the magnet when the coil is assembled on the actuator may also deviate, thereby affecting the performance of the electronic product such as the actuator. SUMMARY

[0004] The present application aims to provide a manufacturing method of an actuator and a circuit board thereof, which can ensure the welding effect of the coil and protect the performance of the electronic product.

[0005] In order to achieve the above-mentioned purpose, the solution of the present application is as follows: A manufacturing method of an actuator circuit board, comprising the following steps: Step 1: taking a first circuit structure member with a plurality of circuit lines; Step 2: performing a patch production on the first circuit structure member to respectively weld and fix electronic components on the circuit lines, and finally obtaining a second circuit structure member with electronic components; the electronic components include a coil. Wherein, in step 2, the two ends of the coil are shaped by a coil shaping jig before the patch production, the two ends of the coil are led out to the outside of the coil, then the coil and the circuit line on the first circuit structure are positioned by a coil positioning jig, and then the coil positioning jig, the electronic component and the first circuit structure are directly sent to the patch machine for patch production. Step 3: The second circuit structure obtained in step 2 is divided into an independent actuator circuit board with electronic components and circuit lines.

[0006] Further, in step 1, a plurality of mutually spaced circuit lines are printed on the substrate to form the first circuit structure with a plurality of circuit lines. The substrate comprises a bottom reinforcing plate and a surface insulating layer; the circuit line is a liquid metal circuit, a conductive silver paste circuit or an FPC circuit.

[0007] Further, the coil shaping jig comprises a shaping plate. The top surface of the shaping plate has a protruding coil fixing column, and the outer contour of the coil fixing column is adapted to the shape of the annular inner hole of the coil; the left and right sides of the coil fixing column of the shaping plate are respectively provided with a shaping positioning area; Each shaping positioning area is respectively provided with an upper and lower through sliding groove extending front and back; the rear sliding groove has a rear push rod protruding upward and capable of reciprocating front and back along the sliding groove; the front sliding groove has a front push rod protruding upward and capable of extending front and back along the sliding groove; Each shaping positioning area is respectively provided with a wire end pressing block capable of ascending and descending above; the coil fixing column is provided with a coil pressing block capable of ascending and descending above; The shaping in step 2 comprises the following steps: (1) The mechanical hand is used to place the coil to be shaped on the coil fixing column of the shaping plate, and the two ends of the coil are respectively downward on the left and right sides of the coil fixing column; (2) The coil pressing block is controlled to descend, and the coil pressing block is used to press against the placed coil; (3) The front push rod is moved backward and the rear push rod is moved forward to push the wire end to be limited in the range of the shaping positioning area; (4) The wire end pressing block is controlled to descend, and the wire end pressing block is used to press against the wire end flattened in the shaping positioning area; (5) The wire end pressing block and the coil pressing block are respectively raised again, the wire end shaped coil is taken out by the mechanical hand and input to step 2 for patch production.

[0008] Further, the coil shaping jig further comprises a rear sliding plate, a front sliding plate, a wire end pressing plate and a coil pressing plate; The rear slide plate is installed below the shaping plate and can slide back and forth, and two rear push rods are protruded on the rear side of the top surface of the rear slide plate and are slidably connected to the two grooves on the rear side of the shaping plate. The front slide plate is installed below the rear slide plate and can slide back and forth, and two front push rods are protruded on the front side of the top surface of the front slide plate and are slidably connected to the two grooves on the front side of the rear slide plate and the shaping plate. The thread pressing plate can be lifted up and down to approach or move away from the top surface of the shaping plate, and the bottom surface of the thread pressing plate is provided with two thread pressing blocks for the two shaping positioning areas. The coil pressing plate is arranged between the thread pressing plate and the shaping plate and can be lifted up and down to approach or move away from the top surface of the shaping plate, and the bottom surface of the coil pressing plate is provided with a coil pressing block and a clearance area, the coil pressing block is above the coil fixing column, and the clearance area penetrates the coil pressing plate and is above the shaping positioning area and each groove.

[0009] Further, one side of the coil fixing column on the top surface of the shaping plate is formed with a sunken area, and one of the shaping positioning areas is located in the sunken area.

[0010] Further, the coil positioning jig comprises a first positioning plate, a pressing plate and a second positioning plate which are stacked in sequence. The first positioning plate is provided with a placement area for placing the first circuit structure on one side close to the pressing plate. The pressing plate is fixed to the first positioning plate to limit the first circuit structure, and the pressing plate is provided with a welding gap and a limiting gap which penetrate two sides; the welding gap is arranged according to the welding area position of the first circuit structure; the limiting gap is arranged according to the position of the electronic component and is matched with the outer contour of the electronic component. The second positioning plate is fixed to the pressing plate away from the first positioning plate, and the second positioning plate is protruded with a positioning column for the center hole of the coil on one side close to the pressing plate. The shape and size of the positioning column of the second positioning plate are matched with the shape and size of the center hole of the coil.

[0011] Further, the positioning in step 2 comprises the following procedures: (1) Place and fix the first circuit structure on the placement area of the first positioning plate, and then cover the pressing plate to limit and fix the first circuit structure; (2) through the limiting gap on the first circuit structure tin paste, and then the electronic components through the limiting gap preliminary positioning on the first circuit structure; Finally cover the second positioning plate, the use of the second positioning plate bottom protruding positioning column inserted into the coil center hole, the coil on the first circuit structure for rectification positioning.

[0012] Further, the positioning in step 2 includes the following procedures: (1) the first circuit structure is placed and fixed on the placement area of the first positioning plate, and then the first circuit structure is fixed by covering the pressing plate; (2) tin paste is brushed on the first circuit structure through the limiting gap, and then the coil in the electronic components is placed in the positioning column of the second positioning plate through the coil center hole, and other electronic components are preliminarily placed in the first circuit structure through the limiting gap; Finally, the position between the coil and the first circuit structure is positioned by combining the second positioning plate, the pressing plate and the first positioning plate.

[0013] Further, the first positioning plate is further provided with at least two spaced positioning members; the pressing plate is provided with a pressing plate through hole for the positioning member to pass through; the second positioning plate is provided with a positioning hole for the positioning member to pass through; the placement area is provided with a plurality of upward protruding inner positioning pins; the first circuit structure is formed by processing a circuit board through hole for the inner positioning pin to pass through, and the pressing plate is provided with a pressing plate inner through hole for the inner positioning pin to pass through.

[0014] Further, the positioning column of the second positioning plate is provided with a plurality of through holes penetrating the second positioning plate.

[0015] The application also provides an actuator comprising a brake circuit board manufactured by the manufacturing method.

[0016] After adopting the above technical scheme, the welding efficiency of electronic components is greatly improved by batch printing circuit lines and then using SMT process for batch production; and the step of manually shaping the coil wire head with a cotton swab can be omitted by using the coil shaping jig, which can greatly improve the production efficiency, and cooperate with the coil positioning jig to ensure the position accuracy between the coil and the circuit lines after welding, which can effectively ensure the performance of the subsequent circuit board assembled on the camera module actuator and other electronic products. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The flowchart of the embodiment manufacturing method of the application; Figure 2 The step schematic diagram of the embodiment manufacturing method of the application; Figure 3 The perspective view of the coil shaping jig of the application; Figure 4 is an exploded view of the coil shaping jig of the present application; Figure 5 is a working state schematic view of the coil shaping jig of the present application (one); Figure 6 is a working state schematic view of the coil shaping jig of the present application (two); Figure 7 is a schematic view of the coil before and after shaping of the present application; Figure 8 is a perspective view of the coil positioning jig of the present application; Figure 9 is a partial exploded view of the coil positioning jig of the present application; Figure 10 is an exploded view of the coil positioning jig of the present application; Figure 11 is a bottom view of the second positioning plate of the coil positioning jig of the present application; Figure 12 is a sectional view of the coil positioning jig of the present application; Figure 13 is an enlarged view of A of Figure 10 ; Figure 14 is a schematic view of a coil.

[0018] Label explanation: coil 10, thread 101; base plate 20, reinforcing plate 201, insulating layer 202, circuit line 30, first circuit structure 40, circuit board through hole 41, electronic component 50, second circuit structure 60; coil shaping jig 70, shaping plate 71, coil fixing column 711, shaping positioning area 712, sliding groove 713, sunken area 714, rear sliding plate 72, rear push rod 721, give way slot 722, front sliding plate 73, front push rod 731, coil pressing plate 74, coil pressing block 741, give way area 742, thread pressing plate 75, thread pressing block 751; coil positioning jig 80, first positioning plate 81, placement area 811, inner positioning pin 8111, positioning member 812, mounting hole 813, pressing plate 82, pressing plate through hole 821, welding notch 822, limiting notch 823, pressing plate inner through hole 824, pressing plate through hole 825, second positioning plate 83, positioning hole 831, positioning column 832, second positioning plate through hole 833, support block 834; actuator circuit board 90. DETAILED DESCRIPTION

[0019] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] As shown in Figure 1 and Figure 2 , a manufacturing method of an actuator circuit board in the embodiments comprises the following steps: Step 1: taking a first circuit structural member 40 with a plurality of circuit lines 30.

[0021] Specifically, a plurality of mutually spaced circuit lines 30 can be batch-printed on a substrate 20 to form the first circuit structural member 40; the substrate 20 can be a structure comprising a bottom reinforcing plate 201 and a surface insulating layer 202, the reinforcing plate 201 can be made of hard materials such as stainless steel and bakelite, and the insulating layer 202 can be made of materials such as PI (polyimide); the circuit lines 30 can be liquid metal circuits, conductive silver paste circuits, or FPC (Flexible Printed Circuit) circuits; in this way, the circuit lines 30 can be batch-printed on the surface of the substrate 20, which can greatly improve the forming efficiency of the circuit lines 30 and improve the structural strength of the circuit board by the reinforcing plate 201; and the use of liquid metal circuits, conductive silver paste circuits, or FPC circuits can reduce the product size and weight.

[0022] Step 2: using SMT process or other process to perform patch production on the first circuit structural member 40 to respectively weld and fix electronic components 50 on each circuit line 30, and finally obtain a second circuit structural member 60 with electronic components 50; the electronic components 50 can be Hall elements, capacitors, coils 10 (such as Figure 14 ), or driving chips, etc.

[0023] In step 2, before patch production, the two end wire heads of the coil 10 can be shaped in advance by using a coil shaping jig 70 to lead the wire heads at both ends of the coil to the outside of the coil, and then the coil positioning jig 80 is used to position the coil 10 and the circuit lines 30 on the first circuit structural member 40, and then the coil positioning jig 80, the electronic components 50 such as the coil 10, and the first circuit structural member 40 are directly sent to the patch machine for patch production.

[0024] Step 3: dividing the second circuit structural member 60 into individual actuator circuit boards with electronic components 50 and circuit lines 30.

[0025] Thus, by batch printing circuit lines 30 and then using SMT process for batch production of patch production, the welding efficiency of electronic components 50 is greatly improved; and by using coil shaping jig 70, the step of manually shaping the coil 10 wire end with a cotton swab can be omitted, the production efficiency can be greatly improved, and the coil positioning jig 80 is used to ensure the position accuracy between the coil 10 after welding and the circuit lines 30, which can effectively ensure the performance of the subsequent circuit board assembled on the camera module actuator and other electronic products.

[0026] Specifically, as shown in Figures 3 to 7 The coil shaping jig 70 provided by the embodiment includes a shaping plate 71, a rear sliding plate 72, a front sliding plate 73, a coil pressing plate 74, and a wire end pressing plate 75.

[0027] The top surface of the shaping plate 71 has a protruding coil fixing column 711, and the outer contour of the coil fixing column 711 is adapted to the annular inner hole shape of the coil 10; the coil fixing column 711 of the shaping plate 71 is provided with a shaping positioning area 712 on the left and right sides, respectively, and the position and angle relationship between the shaping positioning area 712 and the coil fixing column 711 can be set according to the angle requirement of the circuit pad on the actual circuit board to the wire end of the coil 10.

[0028] The front and rear sides of each shaping positioning area 712 are respectively provided with a sliding groove 713 extending upward and forward and backward; the rear sliding groove 713 has a rear push rod 721 protruding upward and capable of reciprocating forward and backward along the sliding groove 713; the front sliding groove 713 has a front push rod 731 protruding upward and capable of extending forward and backward along the sliding groove 713; and the upper side of each shaping positioning area 712 is provided with a wire end pressing block 751 capable of ascending and descending.

[0029] Therefore, after the coil 10 with the wire end to be shaped is sleeved on the coil fixing column 711, the rear push rod 721 and the front push rod 731 are respectively slid in the sliding groove 713, and the wire ends on both sides of the coil 10 are pushed and concentrated in the corresponding shaping positioning area 712 by relatively approaching, so that the shaping in the horizontal direction of the wire end can be realized, and it is ensured that the wire end 101 can be accurately positioned in the welding area when the coil 10 is welded with the circuit board in step 2; and the wire end pressing plate 75 is lowered and pressed against the shaping positioning area 712, which can further press and shape the wire end in the shaping positioning area 712, so that the shaping in the vertical direction of the wire end can be realized, the wire end is prevented from being raised, and the wire end is ensured to be close enough to the welding area during welding, preventing the occurrence of virtual welding.

[0030] Above the coil fixing post 711, a coil pressing block 741 that can move up and down can also be provided. Thus, after the coil 10 is fitted onto the coil fixing post 711, the coil pressing block 741 can be used to press and position the coil 10, thereby improving the stability of the coil 10 body when the front push rod 731, the rear push rod 721 and the wire end pressing block 751 are working, and improving the shaping effect.

[0031] Specifically, the rear slide plate 72 and the front slide plate 73 are sequentially arranged below the shaping plate 71.

[0032] The rear slide plate 72 is slidably mounted under the shaping plate 71, and two rear push rods 721 with left and right intervals are protruding on the rear side of the top surface of the rear slide plate 72. The two rear push rods 721 are respectively slidably connected to the rear side of the shaping plate 71 and protrude upwards from the two sliding grooves 713 on the rear side of the shaping plate 71. The front side of the top surface of the rear slide plate 72 is also provided with two left and right intervals of clearance grooves 722, which are vertically connected and extend forward and backward.

[0033] The front slide plate 73 is slidably mounted under the rear slide plate 72, and two front push rods 731 with left and right spacing are protruding on the front side of the top of the front slide plate 73. The two front push rods 731 are respectively slidably connected to the two clearance grooves 722 on the front side of the rear slide plate 72 and the two sliding grooves 713 on the front side of the shaping plate 71.

[0034] By using the rear slide plate 72 and the front slide plate 73 located below the shaping plate 71, the two rear push rods 721 and the two front push rods 731 can be driven to bend and push the horizontally skewed wire end back into the shaping and positioning area 712, thereby achieving horizontal shaping of the wire end.

[0035] In this embodiment, the adjacent surfaces of the rear push rod 721 and the front push rod 731 are respectively set as inclined surfaces, and the corresponding inclined surfaces in the slide groove 713 are provided with inclined walls, so that the top surface of the baffle between the two slide grooves 713 forms the shaping and positioning area 712, and the shaping and positioning area 712 can be in the shape of an inclined strip, which facilitates the shaping of the thread end.

[0036] The wire end pressure plate 75 can move up and down to approach or move away from the top surface of the shaping plate 71; the coil pressure plate 74 is disposed between the wire end pressure plate 75 and the shaping plate 71, and can move up and down to be close to or away from the top surface of the shaping plate 71.

[0037] The bottom surface of the wire end pressing plate 75 is provided with two wire end pressing blocks 751, which are respectively positioned in two shaping and positioning areas 712. When the wire end pressing plate 75 descends, it drives the two wire end pressing blocks 751 to flatten and shape the horizontally shaped wire end in the vertical direction.

[0038] The coil pressure plate 74 has a coil pressure block 741 and a clearance area 742 in the middle of its bottom surface. The wire end pressure block 751 is located above the coil fixing post 711. The clearance area 742 runs vertically through the coil pressure plate 74 and is located above the shaping and positioning area 712 and each slide groove 713.

[0039] When the coil pressure plate 74 approaches and presses against the top surface of the shaping plate 71, the wire end pressure block 751 can press and limit the coil 10, while the clearance area 742 can make way for the top of the protruding rear push rod 721 and front push rod 731, so that the rear push rod 721 and front push rod 731 can slide in the slide groove 713.

[0040] When the wire end pressure plate 75 approaches and presses against the top surface of the coil pressure plate 74, the two wire end pressure blocks 751 pass downward through the clearance area 742 and press against the shaping and positioning area 712, which can further press and shape the wire end in the shaping and positioning area 712, thereby achieving the shaping of the wire end in the vertical direction.

[0041] In summary, this embodiment utilizes the coil shaping fixture 70 to limit the coil 10 by pressing down with the coil pressure plate 74. Then, by using the rear sliding plate 72 and the front sliding plate 73 located below the shaping plate 71, the two rear push rods 721 and the two front push rods 731 can bend and push the horizontally skewed wire end back into the shaping and positioning area 712, thereby achieving horizontal shaping of the wire end and ensuring that the wire end can be accurately aligned within the welding area when the coil 10 is subsequently soldered to the circuit board. Then, the wire end pressure plate 75 presses down to drive the two wire end pressure blocks 751 to vertically shape and flatten the horizontally shaped wire end, ensuring that the wire end does not curl up and that the wire end is close enough to the welding area during soldering to prevent incomplete soldering.

[0042] Specifically, the shaping process in step 2 includes: (1) The wire end pressure plate 75 and the coil pressure plate 74 are raised and moved away from the top surface of the shaping plate 71, the front slide plate 73 moves forward to make the front push rod 731 move away from the shaping and positioning area 712, and the rear slide plate 72 moves backward to make the rear push rod 721 move away from the shaping and positioning area 712. (2) Use a robotic arm to place the coil 10 to be shaped onto the coil fixing post 711 of the shaping plate 71, and position the wire ends 101 on both sides of the coil 10 facing downwards on the left and right sides of the coil fixing post 711. (3) Control the coil pressure plate 74 to descend, and use the coil pressure block 741 to press and fix the placed coil 10; (4) Control the front slide plate 73 and the rear slide plate 72 to move synchronously, so that the front push rod 731 moves backward and the rear push rod 721 moves forward, so as to push the wire end 101 to be limited within the shaping and positioning area 712; (5) Control the wire end pressure plate 75 to descend, and use the wire end pressure block 751 to press and flatten the wire end 101 located in the shaping and positioning area 712; (6) The wire end pressure plate 75 and the coil pressure plate 74 are raised again, and the coil 10 after wire end shaping is taken out by the robot and input into step 2 for chip mounting production.

[0043] In this embodiment, a recessed area 714 is formed on one side of the coil fixing post 711 on the top surface of the shaping plate 71. A shaping and positioning area 712 is located in the recessed area 714. The recessed area 714 is used for placing and shaping the inner wire end of the coil 10. The depth of the recessed area 714 can be close to the diameter of the wire end.

[0044] In this embodiment, the recessed area 714 is located on the right side of the coil fixing post 711. The right end of the coil 10 is the inner end of the coil 10 that extends outward after passing around the bottom surface of the coil 10 from the inner coil. The left end of the coil 10 is the outer end of the coil 10 that extends outward directly from the outer coil. Therefore, by setting the recessed area 714, the inner end of the coil 10 located on the bottom surface can be conveniently accommodated, preventing the coil 10 from tilting due to uneven height on the left and right sides of the bottom when the end pressing block 751 is pressed down, and ensuring that the ends of the coil 10 on both sides remain horizontal after shaping.

[0045] In this embodiment, horizontal slide rails (not shown) can be respectively provided between the rear slide plate 72 and the shaping plate 71, and between the front slide plate 73 and the rear slide plate 72 for sliding engagement. Vertical slide rods (not shown) can be respectively provided between the coil pressure plate 74 and the shaping plate 71, and between the wire end pressure plate 75 and the shaping plate 71 for sliding engagement. At the same time, a linear module or a drive cylinder can also be provided as a drive module (not shown). The drive module is used to realize the automatic sliding of the rear slide plate 72 and the front slide plate 73 relative to the shaping plate 71, and the automatic lifting and lowering of the coil pressure plate 74 and the wire end pressure plate 75 relative to the shaping plate 71.

[0046] The horizontal slide rail, vertical slide bar, and drive module can all refer to existing technologies.

[0047] The coil shaping fixture 70 of this embodiment can be applied to step 2 above, which can effectively improve production efficiency and reduce labor intensity.

[0048] For example Figures 8 to 13 As shown, specifically, the coil positioning fixture 80 provided in this embodiment includes a first positioning plate 81, a pressure plate 82, and a second positioning plate 83 stacked in sequence.

[0049] The top surface of the first positioning plate 81 near the pressure plate 82 is provided with a placement area 811 for the first circuit structure component 40 and at least two spaced positioning components 812.

[0050] The pressure plate 82 covers and abuts against the top of the first positioning plate 81, and has a pressure plate through hole 821 for the positioning member 812 to pass through. The pressure plate 82 also has a welding notch 822 and a limiting notch 823 that are both through the top and bottom surfaces. The welding notch 822 is set according to the welding area position of the first circuit structure 40, and the limiting notch 823 is set according to the position of the electronic components 50 such as the coil 10 and its shape matches the outer contour of the electronic components 50 such as the coil 10.

[0051] The second positioning plate 83 covers and abuts against the pressure plate 82 away from the first positioning plate 81, and is provided with a positioning hole 831 for the positioning member 812 to pass through. The bottom surface of the second positioning plate 83 near the pressure plate 82 also has a positioning post 832 protruding from the center hole of the coil 10.

[0052] Therefore, in step 2, when using the coil positioning fixture 80 to assist in soldering the coil 10, the first circuit structure component 40 can be pre-placed and fixed on the placement area 811 of the first positioning plate 81. Then, after aligning the pressure plate through hole 821 and the positioning component 812, the pressure plate 82 is closed to further limit and fix the first circuit structure component 40. At this time, solder paste can be applied, and then the coil 10 and other electronic components 50 are initially positioned on the first circuit structure component 40 using the limiting notch 823. Next, after aligning the positioning hole 831 and the positioning component 812, the second positioning plate 83 is closed, utilizing the protruding positioning notch at the bottom of the second positioning plate 83... The positioning post 832 is inserted into the center hole of the coil 10 to correct and position the coil 10 on the first circuit structure component 40. This ensures that the coil 10 can be precisely aligned and positioned at the preset position on the first circuit structure component 40. Finally, the positioning fixture is sent to the surface mount equipment for soldering. This process accurately and reliably solders and fixes the coil 10 and other electronic components 50 to the first circuit structure component 40, effectively guaranteeing the performance of the subsequent circuit board assembly on electronic products. For example, it ensures that after the FPC is assembled into the actuator, the center of its coil 10 can be accurately aligned with the magnet, ensuring reliable and stable induction and engagement with the magnet. Moreover, the positioning post 832 is located above the pressure plate 82 and does not interfere with the first circuit structure component 40 below the pressure plate 82, allowing it to adapt to different types of circuit boards, making it more practical and adaptable.

[0053] This embodiment mainly uses the cooperation of positioning component 812, pressure plate through hole 821 and positioning hole 831 to achieve positioning and cooperation of first positioning plate 81, pressure plate 82 and second positioning plate 83. The structure is relatively simple. Of course, other positioning methods can also be used for positioning, and it is not limited to this.

[0054] In this embodiment, the top surface of the first positioning plate 81 may be provided with a plurality of placement areas 811, which correspond to each circuit line 30 on the first circuit structure component 40 respectively. This embodiment takes 24 placement areas 811 as an example for explanation. The welding notch 822 and the limiting notch 823 of the corresponding pressure plate 82 and the positioning post 832 of the second positioning plate 83 can be increased to correspond to the number of placement areas 811.

[0055] In this embodiment, each placement area 811 on the first positioning plate 81 can be arranged sequentially along the length direction of the first positioning plate 81. A positioning element 812 can be provided at the diagonal ends of the length direction of the first positioning plate 81. The positioning element 812 can be a positioning pin. The first positioning plate 81 is provided with mounting holes 813 for the positioning pin to pass through and be fixed. Of course, the number and structure of the specific positioning elements 812 are not limited to this embodiment.

[0056] The placement area 811 may also be provided with a number of upwardly protruding inner positioning pins 8111. In this embodiment, two left-right spaced inner positioning pins 8111 are provided in each placement area 811 as an example. The first circuit structure 40 is processed to form a circuit board through hole 41 for the inner positioning pins 8111 to pass through. The pressure plate 82 may be provided with a pressure plate inner through hole 824 for the inner positioning pins 8111 to pass through. In this way, the positioning and cooperation between the first circuit structure 40 and the placement area 811 can be facilitated, and the fixation of the pressure plate 82 on the first circuit structure 40 and the positioning and cooperation between the pressure plate 82 and the first positioning plate 81 can be strengthened.

[0057] In this embodiment, the second positioning plate 83 may have several through holes 833 on the outer periphery of the positioning post 832. Taking four through holes 833 distributed in front, back, left and right as an example, the second positioning plate through holes 833 can reduce the weight of the second positioning plate 83, facilitate the jig transfer and production, and allow the coil 10 to be manually corrected as needed through the through holes 833.

[0058] In this embodiment, the shape and size of the positioning post 832 of the second positioning plate 83 are adapted to the shape and size of the central hole of the coil 10. Taking the runway coil 10 as an example, the corresponding positioning post 832 can be a rounded rectangular convex post to accurately position and insert into the coil 10.

[0059] The bottom outer periphery of the second positioning plate 83 may also have several support blocks 834 protruding to prevent the second positioning plate 83 from excessively squeezing the coil 10. In this embodiment, a support block 834 is provided at each of the four corners of the second positioning plate 83. At the same time, the pressure plate 82 may be provided with pressure plate through holes 825 for the support blocks 834 to pass through, which can further increase the assembly accuracy between the second positioning plate 83 and the first positioning plate 81 and the pressure plate 82.

[0060] In this embodiment, the first positioning plate 81, the pressure plate 82, and the second positioning plate 83 are arranged sequentially from bottom to top. Of course, the second positioning plate 83 can also be placed at the bottom. After fixing and positioning each coil 10, the pressure plate 82, the first circuit structure component 40, and the first positioning plate 81 are assembled and covered on the second positioning plate 83 and each coil 10. This can also achieve the positioning and correction of the coil 10.

[0061] In summary, this embodiment also provides an actuator. The actuator circuit board 90 manufactured using the above manufacturing method can have good product performance.

[0062] The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of the present invention should still fall within the scope of protection of the present invention.

[0063] In the description of the embodiments of this application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0064] Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

[0065] In the description of the embodiments of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" 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, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] Furthermore, this application provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

Claims

1. A method for manufacturing an actuator circuit board, characterized in that: Includes the following steps: Step 1: Take the first circuit structure component with several circuit lines; Step 2: The first circuit structure is manufactured by surface mount technology (SMT) to solder and fix electronic components on each circuit line, finally obtaining a second circuit structure with electronic components; the electronic components include coils. In step 2, before surface mount production, the wire ends of the coil are shaped using a coil shaping fixture so that the wire ends of the coil are led out to the outside of the coil. Then, the coil positioning fixture is used to position the coil and the circuit lines on the first circuit structure. Finally, the coil positioning fixture, electronic components and the first circuit structure are directly fed into the surface mount machine for surface mount production. Step 3: Divide the second circuit structure obtained in Step 2 into individual actuator circuit boards with electronic components and circuit lines.

2. The method for manufacturing an actuator circuit board according to claim 1, characterized in that: In step 1, a number of mutually spaced circuit lines are printed in batches on a substrate to form the first circuit structure with the number of circuit lines. The substrate includes a bottom reinforcing plate and a surface insulating layer; the circuitry is a liquid metal circuit, a conductive silver paste circuit, or an FPC circuit.

3. The method for manufacturing an actuator circuit board according to claim 1, characterized in that: The coil shaping fixture includes a shaping plate; The top surface of the shaping plate has a protruding coil fixing post, the outer contour of which is adapted to the shape of the annular inner hole of the coil; a shaping positioning area is provided on the left and right sides of the coil fixing post of the shaping plate. Each shaping and positioning area is provided with a vertically extending and front-back sliding groove on its front and back sides; the rear sliding groove has a rear push rod that protrudes upward and can move back and forth along the sliding groove; the front sliding groove has a front push rod that protrudes upward and can extend the sliding groove and move back and forth. Above each shaping and positioning area is a wire end pressing block that can be raised and lowered; above the coil fixing post is a coil pressing block that can be raised and lowered. The shaping process in step 2 includes the following steps: (1) Use a robotic arm to place the coil to be shaped onto the coil fixing post of the shaping plate, and position the wire ends on both sides of the coil facing downwards on the left and right sides of the coil fixing post. (2) Control the coil pressure block to descend, and use the coil pressure block to press and fix the placed coil; (3) Move the front push rod backward and the rear push rod forward to push the line end to a limit within the shaping and positioning area; (4) Control the crease block to descend and use it to press and flatten the crease located in the shaping and positioning area; (5) The wire end clamping block and the coil clamping block are raised again. The robot arm is used to take out the coil after the wire end is shaped and input it into step 2 for chip mounting production.

4. A method for manufacturing an actuator circuit board according to claim 3, characterized in that: The coil shaping fixture also includes a rear sliding plate, a front sliding plate, a wire end pressing plate, and a coil pressing plate; The rear slide plate can be slidably installed under the shaping plate, and two rear push rods spaced apart are provided on the rear side of the top surface of the rear slide plate. The two rear push rods slide back and forth and protrude from the two sliding grooves on the rear side of the shaping plate. Two clearance grooves spaced apart are also provided on the front side of the top surface of the rear slide plate. The clearance grooves are vertically connected and extend forward and backward. The front slide plate is slidably mounted under the rear slide plate, and two front push rods spaced apart are protruding on the front side of the top of the front slide plate. The two front push rods slide back and forth and protrude upwards from the two clearance grooves on the front side of the rear slide plate and the two sliding grooves on the front side of the shaping plate. The thread end pressure plate can move up and down to approach or move away from the top surface of the shaping plate; the bottom surface of the thread end pressure plate is provided with two thread end pressure blocks respectively located in two shaping positioning areas; The coil pressure plate is positioned between the wire end pressure plate and the shaping plate, and can be raised and lowered to be close to or away from the top surface of the shaping plate. The bottom surface of the coil pressure plate is provided with a coil pressure block and a clearance area. The coil pressure block is located above the coil fixing post. The clearance area runs vertically through the coil pressure plate and is located above the shaping and positioning area and each slide groove.

5. A method for manufacturing an actuator circuit board according to claim 3, characterized in that: A recessed area is formed on one side of the coil fixing post on the top surface of the shaping plate, and one of the shaping and positioning areas is located in the recessed area.

6. A method for manufacturing an actuator circuit board according to claim 1, characterized in that: The coil positioning fixture includes a first positioning plate, a pressure plate, and a second positioning plate stacked in sequence. The first positioning plate has a placement area for placing the first circuit structure component on one side near the pressure plate; The pressure plate abuts against the first positioning plate to limit and fix the first circuit structure component. The pressure plate is provided with a welding notch and a limiting notch that are through on both sides. The welding notch is set according to the welding area position of the first circuit structure component. The limiting notch is set according to the position of the electronic component and its shape matches the outer contour of the electronic component. The second positioning plate is attached to the side of the pressure plate away from the first positioning plate, and the side of the second positioning plate closer to the pressure plate has a protruding positioning post located in the center hole of the coil. The shape and size of the positioning post of the second positioning plate are adapted to the shape and size of the center hole of the coil.

7. A method for manufacturing an actuator circuit board according to claim 6, characterized in that: The positioning process in step 2 includes the following steps: (1) Place and fix the first circuit structure on the placement area of ​​the first positioning plate, and then close the pressure plate to limit and fix the first circuit structure; (2) Apply solder paste to the first circuit structure through the limiting notch, and then place the electronic components on the first circuit structure through the limiting notch; finally, cover the second positioning plate and use the positioning post protruding from the bottom of the second positioning plate to insert into the center hole of the coil to correct and position the coil on the first circuit structure.

8. A method for manufacturing an actuator circuit board according to claim 6, characterized in that: The positioning process in step 2 includes the following steps: (1) Place and fix the first circuit structure on the placement area of ​​the first positioning plate, and then close the pressure plate to limit and fix the first circuit structure; (2) Apply solder paste to the first circuit structure through the limiting notch, then place the coil of the electronic component into the positioning post of the second positioning plate through the coil center hole, while other electronic components are initially placed in the first circuit structure through the limiting notch; finally, combine the second positioning plate, the pressure plate and the first positioning plate to position the coil and the first circuit structure.

9. A method for manufacturing an actuator circuit board according to claim 6, characterized in that: The first positioning plate is also provided with at least two positioning elements spaced apart; the pressure plate is provided with pressure plate through holes for the positioning elements to pass through; the second positioning plate is provided with positioning holes for the positioning elements to pass through; a plurality of upwardly protruding inner positioning pins are provided in the placement area; the first circuit structure is formed by processing to form circuit board through holes for the inner positioning pins to pass through, while the pressure plate is provided with pressure plate inner through holes for the inner positioning pins to pass through; the outer periphery of the positioning post of the second positioning plate is provided with a plurality of through holes that penetrate the second positioning plate on both sides.

10. An actuator, characterized in that: This includes brake circuit boards manufactured using the manufacturing method described in any one of claims 1-9.

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