An actuator and a manufacturing method of a circuit board thereof

Abstract

The application discloses a kind of actuator and the manufacturing method of its circuit board, manufacturing method includes the following steps: step 1: take first circuit structural member with several circuit lines;Step 2: first circuit structural member is carried out patch production, to be respectively welded on each circuit line Electronic component is fixed, finally obtain second circuit structural member with electronic component;Electronic component includes coil;Wherein, before carrying out patch production, the two ends of the coil are shaped using coil shaping jig, then coil positioning jig is used to position between coil and circuit line on first circuit structural member, then patch production is carried out;Step 3: the second circuit structural member obtained in step 2 is segmented into independent actuator circuit board with electronic component and circuit line.Beneficial effects: by this, production efficiency can be greatly improved, and the performance on 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.

[0003] 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 shaped to the required angle and position by manually adjusting and shaping the wire ends with a cotton swab under a microscope. However, manual operation is time-consuming and laborious, and has low efficiency and high working intensity.

[0004] 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 into the actuator may also deviate, thereby affecting the performance of the electronic product such as the actuator. SUMMARY

[0005] 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.

[0006] In order to achieve the above-mentioned purpose, the solution of the present application is as follows:

[0007] A manufacturing method of an actuator circuit board, comprising the following steps:

[0008] Step 1: taking a first circuit structure member with a plurality of circuit lines;

[0009] 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;

[0010] 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 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.

[0011] Step 3: The second circuit structure obtained in step 2 is divided into an independent actuator circuit board with electronic components and circuit lines.

[0012] 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.

[0013] 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.

[0014] Further, the coil shaping jig comprises a shaping plate.

[0015] 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.

[0016] The front and rear sides of each shaping positioning area are respectively provided with an upper and lower through sliding groove extending front and rear; the rear sliding groove has a rear push rod protruding upward and capable of reciprocating front and rear along the sliding groove; the front sliding groove has a front push rod protruding upward and capable of extending front and rear along the sliding groove.

[0017] The upper side of each shaping positioning area is respectively provided with a wire end pressing block capable of ascending and descending; the upper side of the coil fixing column is provided with a coil pressing block capable of ascending and descending.

[0018] The shaping in step 2 comprises the following steps:

[0019] (1) The coil to be shaped is placed on the coil fixing column of the shaping plate by a mechanical hand, and the two ends of the coil are respectively downward on the left and right sides of the coil fixing column;

[0020] (2) The coil pressing block is controlled to descend, and the coil is pressed against the coil pressing block;

[0021] (3) The front push rod is moved backward and the rear push rod is moved forward to push the wire end to the range of the shaping positioning area;

[0022] (4) The wire end pressing block is controlled to descend, and the wire end in the shaping positioning area is pressed against the wire end pressing block;

[0023] (5) The thread end pressing block and the coil pressing block are respectively re-raised, the coil after the thread shaping is taken out by the mechanical hand and input to step 2 for patch production.

[0024] Further, the coil shaping jig further comprises a rear sliding plate, a front sliding plate, a thread end pressing plate and a coil pressing plate;

[0025] The rear sliding plate is reciprocally slidably installed below the shaping plate, and two rear push rods are protruded on the top surface of the rear sliding plate and spaced apart left and right, the two rear push rods are respectively slidably connected front and back and protruded on the rear side of the shaping plate two sliding grooves, and two left and right spaced apart accommodation grooves are further provided on the front side of the top surface of the rear sliding plate, the accommodation grooves are through-penetrated upward and downward and extend front and back;

[0026] The front sliding plate is reciprocally slidably installed below the rear sliding plate, and two front push rods are protruded on the top surface of the front sliding plate and spaced apart left and right, the two front push rods are respectively slidably connected front and back and protruded on the front side of the rear sliding plate two accommodation grooves and the front side of the shaping plate two sliding grooves;

[0027] The thread end pressing plate is vertically movably arranged close to or away from the top surface of the shaping plate; the bottom surface of the thread end pressing plate is provided with two thread end pressing blocks respectively located in the two shaping positioning areas;

[0028] The coil pressing plate is arranged between the thread end pressing plate and the shaping plate, and can vertically move to abut or away from the top surface of the shaping plate; the bottom surface of the coil pressing plate is provided with a coil pressing block and an accommodation area, the coil pressing block is located above the coil fixing column; the accommodation area is through-penetrated upward and downward through the coil pressing plate, and is located above the shaping positioning area and each sliding groove.

[0029] 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.

[0030] Further, the coil positioning jig comprises a first positioning plate, a pressing plate and a second positioning plate which are sequentially stacked;

[0031] The first positioning plate is provided with a placement area for placing the first circuit structure on one side close to the pressing plate;

[0032] The pressing plate abuts against the first positioning plate to limit and fix the first circuit structure, the pressing plate is provided with a welding gap and a limiting gap which are through-penetrated on 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 in shape;

[0033] The second positioning plate abuts against the side of the pressing plate away from the first positioning plate, and the second positioning plate protrudes a positioning column for locating the center hole of the coil on the side close to the pressing plate;

[0034] The shape and size of the positioning column of the second positioning plate are adapted to the shape and size of the center hole of the coil.

[0035] Further, the positioning in step 2 comprises the following procedures:

[0036] (1) The first circuit structure is placed and fixed on the placement area of the first positioning plate, and then the pressing plate is covered to limit and fix the first circuit structure;

[0037] (2) Tin paste is brushed on the first circuit structure through the limiting gap, and then the coil in the electronic component 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.

[0038] Further, the positioning in step 2 comprises the following procedures:

[0039] (1) The first circuit structure is placed and fixed on the placement area of the first positioning plate, and then the pressing plate is covered to limit and fix the first circuit structure;

[0040] (2) Tin paste is brushed on the first circuit structure through the limiting gap, and then the coil in the electronic component 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.

[0041] 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 members to pass through; the second positioning plate is provided with a positioning hole for the positioning members to pass through; the placement area is provided with a plurality of upward protruding inner positioning pins; the first circuit structure is formed with a circuit board through hole for the inner positioning pins to pass through, and the pressing plate is provided with a pressing plate inner through hole for the inner positioning pins to pass through.

[0042] Further, the outer periphery of the positioning column of the second positioning plate is provided with a plurality of through holes penetrating the second positioning plate.

[0043] The application further provides an actuator comprising the brake circuit board manufactured by the manufacturing method.

[0044] Adopting the technical scheme, through batch printing circuit lines and then adopting SMT and other processes to produce in batches, the welding efficiency of electronic components is greatly improved; and by using the coil shaping jig, the step of manually shaping the coil wire end by using a cotton swab can be omitted, the production efficiency is greatly improved, and the coil positioning jig is used to ensure the position accuracy between the coil after welding and the circuit lines, so that the performance of the subsequent circuit board assembled on the camera module actuator and other electronic products can be effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 Flow chart of the manufacturing method of the embodiment of the present application;

[0046] Figure 2 Schematic diagram of the steps of the manufacturing method of the embodiment of the present application;

[0047] Figure 3 Perspective view of the coil shaping jig of the present application;

[0048] Figure 4 Exploded view of the coil shaping jig of the present application;

[0049] Figure 5 Schematic diagram of the working state of the coil shaping jig of the present application (one);

[0050] Figure 6 Schematic diagram of the working state of the coil shaping jig of the present application (two);

[0051] Figure 7 Schematic diagram of the coil before and after shaping of the present application;

[0052] Figure 8 Perspective view of the coil positioning jig of the present application;

[0053] Figure 9 Partial exploded view of the coil positioning jig of the present application;

[0054] Figure 10 Exploded view of the coil positioning jig of the present application;

[0055] Figure 11 Second positioning plate bottom view of the coil positioning jig of the present application;

[0056] Figure 12 Sectional view of the coil positioning jig of the present application;

[0057] Figure 13 is the enlarged view of A; Figure 10

[0058] Figure 14 is a schematic diagram of a coil.

[0059] Label explanation:​

[0060] coil 10, wire end 101;

[0061] substrate 20, reinforcing plate 201, insulating layer 202, circuit line 30, first circuit structure 40, circuit board perforation 41, electronic component 50, second circuit structure 60;

[0062] 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, wire end pressing plate 75, wire end pressing block 751;

[0063] 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 perforation 821, welding notch 822, limiting notch 823, pressing plate inner perforation 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;

[0064] actuator circuit board 90. DETAILED DESCRIPTION

[0065] In order to make the purpose, 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 embodiments of the present application, not all 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.

[0066] As shown in Figure 1 and Figure 2 , a manufacturing method of an actuator circuit board of the present embodiment includes the following steps:

[0067] Step 1: Take a first circuit structure 40 with several circuit lines 30.

[0068] Specifically, the first circuit structure 40 can be formed by printing a plurality of circuit lines 30 on the substrate 20 in batches; the substrate 20 can be a structure including a bottom reinforcing plate 201 and a surface insulating layer 202, the reinforcing plate 201 can be made of stainless steel, bakelite or other hard materials, and the insulating layer 202 can be made of PI (polyimide) or other materials; the circuit line 30 can be a liquid metal circuit, a conductive silver paste circuit or an FPC (Flexible Printed Circuit) circuit; in this way, the circuit line 30 can be printed on the surface of the substrate 20 in batches, which can greatly improve the forming efficiency of the circuit line 30 and improve the structural strength of the circuit board by the reinforcing plate 201; and the use of liquid metal circuit, conductive silver paste circuit or FPC circuit can reduce the product size and weight.

[0069] Step 2: The first circuit structure 40 is produced by SMT process or other process to weld and fix electronic components 50 on each circuit line 30, and finally obtain a second circuit structure 60 with electronic components 50; the electronic component 50 can be a Hall element, a capacitor, a coil 10 (such as Figure 14 ) or a driving chip, etc.

[0070] In step 2, the two ends of the coil 10 can be shaped by using a coil shaping jig 70 before the production of the patch, so that the two ends of the coil are led out to the outside of the coil, and then the coil positioning jig 80 is used to position the coil 10 and the circuit line 30 on the first circuit structure 40, and then the coil positioning jig 80, the electronic component 50 and the first circuit structure 40 are directly sent to the patch machine for patch production.

[0071] Step 3: The second circuit structure 60 is divided into independent actuator circuit boards with electronic components 50 and circuit lines 30.

[0072] Therefore, by printing the circuit line 30 in batches and then using the SMT process to produce the patch in batches, the welding efficiency of the electronic component 50 is greatly improved; and by using the coil shaping jig 70, the step of manually shaping the coil 10 with a cotton swab can be omitted, which can greatly improve the production efficiency, and the coil 10 can be accurately positioned with the circuit line 30 after welding by using the coil positioning jig 80, which can effectively ensure the performance of the subsequent circuit board assembled on the camera module actuator and other electronic products.

[0073] 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.

[0074] The top surface of the shaping plate 71 has a protruding coil fixing column 711, the outer contour of which is adapted to the shape of the annular inner hole 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 head of the coil 10.

[0075] The front and rear sides of each shaping positioning area 712 are respectively provided with a sliding groove 713 extending upward and front and rear; the rear sliding groove 713 has a rear push rod 721 protruding upward and capable of reciprocating front and rear along the sliding groove 713; the front sliding groove 713 has a front push rod 731 protruding upward and capable of reciprocating front and rear along the sliding groove 713; the upper side of each shaping positioning area 712 is respectively provided with a wire head pressing block 751 capable of rising and falling.

[0076] Therefore, after the coil 10 with the wire head 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 heads 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 head can be realized, and it is ensured that the wire head 101 can be accurately positioned in the welding area when the coil 10 is welded with the circuit board in step 2; the wire head pressing plate 75 is lowered to press against the shaping positioning area 712, which can further press and shape the wire head in the shaping positioning area 712, so as to realize the shaping in the vertical direction of the wire head, ensure that the wire head is not raised, ensure that the wire head is close enough to the welding area during welding, and prevent the occurrence of virtual welding.

[0077] The upper side of the coil fixing column 711 can also be provided with a coil pressing block 741 capable of rising and falling. Therefore, after the coil 10 is sleeved on the coil fixing column 711, the coil 10 can be pressed and positioned by the coil pressing block 741, so as to improve the stability of the coil 10 body during the work of the front push rod 731, the rear push rod 721 and the wire head pressing block 751, and improve the shaping effect.

[0078] Specifically, the rear sliding plate 72 and the front sliding plate 73 are sequentially arranged below the shaping plate 71.

[0079] The rear sliding plate 72 is capable of reciprocating slidingly installed below the shaping plate 71, and two rear push rods 721 are protrudingly arranged on the top surface of the rear sliding plate 72 and spaced apart left and right, the two rear push rods 721 are respectively slidably connected to the rear side of the shaping plate 71 and protrude upward, and the front side of the top surface of the rear sliding plate 72 is also provided with two left and right spaced apart displacement grooves 722, which are vertically through and front and rear extending.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] In summary, the coil shaping jig 70 can limit the coil 10 by pressing down the coil pressing plate 74, and then the rear sliding plate 72 and the front sliding plate 73 arranged below the shaping plate 71 are used to slide forward and backward, and the two rear push rods 721 and the two front push rods 731 are used to bend and push the horizontally skewed wire ends in the shaping positioning area 712, so as to realize horizontal shaping of the wire ends and ensure that the wire ends can be accurately positioned in the welding area when the coil 10 is welded with the circuit board in the future; then the wire end pressing plate 75 is pressed down to drive the two wire end pressing blocks 751 to vertically shape and flatten the horizontally shaped wire ends, so as to ensure that the wire ends are not raised and close enough to the welding area during welding, preventing the occurrence of false welding.

[0089] Specifically, the shaping process in step 2 includes:

[0090] (1) The wire end pressing plate 75 and the coil pressing plate 74 are respectively raised and moved away from the top surface of the shaping plate 71, the front sliding plate 73 is moved forward to move the front push rod 731 away from the shaping positioning area 712, and the rear sliding plate 72 is moved backward to move the rear push rod 721 away from the shaping positioning area 712;

[0091] (2) The mechanical hand is used to place the coil 10 to be shaped on the coil fixing column 711 of the shaping plate 71, and the wire ends 101 on both sides of the coil 10 are respectively downwardly located on the left and right sides of the coil fixing column 711;

[0092] (3) The coil pressing plate 74 is controlled to be lowered, and the coil 10 is pressed by the coil pressing block 741;

[0093] (4) The front sliding plate 73 and the rear sliding plate 72 are controlled to be synchronously moved, the front push rod 731 is moved backward, and the rear push rod 721 is moved forward, so as to push and limit the wire ends 101 in the shaping positioning area 712;

[0094] (5) The wire end pressing plate 75 is controlled to be lowered, and the wire ends 101 in the shaping positioning area 712 are pressed by the wire end pressing block 751;

[0095] (6) The wire end pressing plate 75 and the coil pressing plate 74 are respectively raised again, the coil 10 after wire end shaping is taken out by the mechanical hand and input to step 2 for patch production.

[0096] In the embodiment, one side of the coil fixing column 711 on the top surface of the shaping plate 71 is formed with a sunken area 714, one shaping positioning area 712 is located in the sunken area 714, the sunken area 714 is used for placing and shaping the wire ends on the inner side of the coil 10, and the depth of the sunken area 714 can be close to the diameter of the wire ends.

[0097] The sinking area 714 in the embodiment is arranged at the right side of the coil fixing column 711, the right side wire head of the coil 10 is an inside wire head which extends outward after passing the bottom surface of the coil 10 from the inner circle of the coil 10, and the left side wire head of the coil 10 is an outside wire head which extends outward directly from the outer circle of the coil 10. Therefore, by arranging the sinking area 714, the inside wire head on the bottom surface of the coil 10 can be conveniently accommodated, and the coil 10 is prevented from being skewed as a whole due to the height difference between the left side and the right side of the bottom when the wire head pressing block 751 is pressed down, so that it is ensured that the wire heads on both sides of the coil 10 remain horizontal after shaping.

[0098] In the embodiment, horizontal sliding rails (not shown in the figure) can be arranged between the rear sliding plate 72 and the shaping plate 71 and between the front sliding plate 73 and the rear sliding plate 72 respectively for sliding connection, vertical sliding rods (not shown in the figure) can be arranged between the coil pressing plate 74 and the shaping plate 71 and between the wire head pressing plate 75 and the shaping plate 71 respectively for sliding connection; and a linear module or a driving cylinder or the like structure can be arranged as a driving module (not shown in the figure), and the driving module is used to realize the automatic sliding of the rear sliding plate 72 and the front sliding plate 73 relative to the shaping plate 71 and the automatic lifting of the coil pressing plate 74 and the wire head pressing plate 75 relative to the shaping plate 71.

[0099] The horizontal sliding rails, the vertical sliding rods and the driving module can all refer to the prior art.

[0100] The coil shaping jig 70 of the embodiment can be applied to step 2 described above, and the production efficiency can be effectively improved and the labor intensity can be reduced.

[0101] For example Figures 8 to 13 Specifically, the coil positioning jig 80 provided in the embodiment includes a first positioning plate 81, a pressing plate 82 and a second positioning plate 83 which are stacked in sequence.

[0102] The first positioning plate 81 is provided with a placement area 811 of the first circuit structure 40 and at least two positioning members 812 which are arranged at intervals on the side top surface close to the pressing plate 82.

[0103] The pressing plate 82 is arranged above the first positioning plate 81 and is provided with pressing plate perforations 821 through which the positioning members 812 pass, and the pressing plate 82 is further provided with welding notches 822 and limiting notches 823 which penetrate through both upper and lower surfaces; the welding notches 822 are arranged according to the welding area position of the first circuit structure 40, and the limiting notches 823 are arranged according to the position of the coil 10 and the like electronic components 50 and are matched in shape to the outer contour of the coil 10 and the like electronic components 50.

[0104] The second positioning plate 83 is covered and abuts on the upper side of the pressing 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, and the side bottom surface of the second positioning plate 83 close to the pressing plate 82 further protrudes a positioning column 832 for locating the center hole of the coil 10.

[0105] Therefore, in step 2, when the coil 10 is welded with the aid of the coil positioning jig 80, the first circuit structure 40 can be placed and fixed on the placement area 811 of the first positioning plate 81 in advance, then the first circuit structure 40 is further fixed and limited by covering and pressing the pressing plate 82 after aligning the pressing hole 821 of the pressing plate and the positioning member 812, at this time, the solder paste can be brushed, and then the coil 10 and other electronic components 50 are preliminarily placed and limited on the first circuit structure 40 by means of the limiting notch 823, then the second positioning plate 83 is covered after aligning the positioning hole 831 and the positioning member 812, and the positioning column 832 protruding from the bottom of the second positioning plate 83 is inserted into the center hole of the coil 10 to correct and position the coil 10 on the first circuit structure 40, so as to ensure that the coil 10 can be accurately positioned at the preset position of the first circuit structure 40, finally the positioning jig is sent into the SMT equipment for welding production, and the coil 10 and other electronic components 50 are accurately positioned and reliably connected and fixed with the first circuit structure 40, which can effectively ensure the performance of the subsequent circuit board assembled on the electronic product, for example, the coil 10 center of the FPC assembled on the actuator can be accurately positioned on the magnet, and the induction and cooperation between the magnet and the coil 10 are reliable and stable. Moreover, the positioning column 832 does not interfere with the first circuit structure 40 above and below the pressing plate 82, which can adapt to different styles of circuit boards, has stronger practicability and better adaptability.

[0106] In the embodiment, the positioning member 812, the pressing hole 821 of the pressing plate and the positioning hole 831 are matched to realize the positioning and matching of the first positioning plate 81, the pressing plate 82 and the second positioning plate 83, the structure is relatively simple, and of course other positioning modes can also be used for positioning, which is not limited thereto.

[0107] In the embodiment, the top surface of the first positioning plate 81 can be provided with a plurality of placement areas 811 to correspond to each circuit line 30 on the first circuit structure 40 respectively, and 24 placement areas 811 are taken as an example for description in the embodiment, and the welding notch 822 and the limiting notch 823 of the pressing plate 82 and the positioning column 832 of the second positioning plate 83 can be increased in number corresponding to the number of the placement areas 811.

[0108] In the embodiment, the placement areas 811 on the first positioning plate 81 can be arranged in sequence along the length direction of the first positioning plate 81, and a positioning member 812 can be arranged at each of the opposite corners of the length direction of the first positioning plate 81. The positioning member 812 can be a positioning pin, and the first positioning plate 81 is provided with a mounting hole 813 for the positioning pin to pass through and be fixed. Of course, the number and structure of the specific positioning member 812 are not limited to the embodiment.

[0109] The placement area 811 can also be provided with a plurality of upwardly protruding inner positioning pins 8111. In the embodiment, two left and right spaced inner positioning pins 8111 are arranged in each placement area 811. The first circuit structure 40 is provided with a circuit board through hole 41 for the inner positioning pin 8111 to pass through, and the pressing plate 82 is provided with a pressing plate inner through hole 824 for the inner positioning pin 8111 to pass through. In this way, the positioning and cooperation of the first circuit structure 40 and the placement area 811 can be facilitated, and the fixation of the pressing plate 82 on the first circuit structure 40 and the positioning and cooperation of the pressing plate 82 and the first positioning plate 81 can be enhanced.

[0110] In the embodiment, the outer periphery of the positioning column 832 of the second positioning plate 83 can be provided with a plurality of second positioning plate through holes 833 penetrating through the upper and lower surfaces. In the embodiment, four second positioning plate through holes 833 are distributed in front and back and left and right. The second positioning plate through hole 833 can be used to reduce the weight of the second positioning plate 83, facilitate the transfer of the jig for production, and manually correct the coil 10 according to the needs through the second positioning plate through hole 833.

[0111] In the embodiment, the shape and size of the positioning column 832 of the second positioning plate 83 are adaptively set according to the shape and size of the center hole of the coil 10. In the embodiment, the coil 10 is a racetrack coil 10, and the corresponding positioning column 832 can be a round rectangular protruding column, which can be accurately positioned and inserted into the coil 10.

[0112] The outer periphery of the bottom surface of the second positioning plate 83 can also protrude a plurality of support blocks 834, which can prevent the second positioning plate 83 from excessively pressing the coil 10. In the embodiment, one support block 834 is arranged at each of the four corners of the second positioning plate 83, and the pressing plate 82 is provided with a pressing plate through hole 825 for the support block 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 pressing plate 82.

[0113] In the embodiment, the first positioning plate 81, the pressing plate 82, and the second positioning plate 83 are sequentially arranged from bottom to top. Of course, the second positioning plate 83 can also be arranged below, and then the coil 10 is fixed and positioned, and then the pressing plate 82, the first circuit structure 40, and the first positioning plate 81 are assembled and then covered above the second positioning plate 83 and the coil 10, which can also achieve the positioning and correction of the coil 10.

[0114] In summary, the embodiment also provides an actuator, the actuator circuit board 90 manufactured by the above manufacturing method can have good product performance.

[0115] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that equivalent changes and modifications without departing from the principles of the present application shall still fall within the protection scope of the present application.

[0116] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is placed, or the orientation or positional relationship commonly understood by those skilled in the art, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0117] In addition, the terms "first", "second", "third", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" and "several" is two or more, unless otherwise explicitly specified and limited.

[0118] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0119] In addition, the present application provides various specific examples of processes and materials, but those skilled in the art can realize 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; 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.

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 or an FPC circuit.

3. The method for manufacturing an actuator circuit board according to claim 1, 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.

4. The method for manufacturing an actuator circuit board according to claim 1, 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.

5. 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.

6. A method for manufacturing an actuator circuit board according to claim 5, 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.

7. A method for manufacturing an actuator circuit board according to claim 5, 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.

8. A method for manufacturing an actuator circuit board according to claim 5, 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.

9. An actuator, characterized in that: This includes brake circuit boards manufactured using the manufacturing method described in any one of claims 1-8.

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