An integrated functional lead frame manufacturing equipment and its lead frame

Abstract

This invention discloses an integrated functional lead frame production equipment and its lead frame, relating to the field of lead frame production technology. It includes: a primary straightening unit, a pre-forming unit, a pre-stamping unit, a secondary straightening unit, and a processing unit arranged sequentially along the material plate feeding direction. Through a process of primary straightening, re-pre-stamping, and re-straightening, the residual stress concentration in the middle of the material plate is effectively reduced. During the pre-stamping process, the middle of the material plate is pressed down, creating a height difference, which not only reduces lubricant leakage but also ensures it conforms to the constraints of the support frame and support plate. Furthermore, the sides of the material plate are stamped to form raised grooves, which engage with the surface of the support frame, providing support and further enhancing the rigidity and torque resistance of the material plate. The two raised grooves on the sides of the material plate also effectively isolate vibrations during transportation, further improving the overall stability of the material plate after pre-stamping.

Description

Technical Field

[0001] This invention relates to the field of lead frame manufacturing technology, and in particular to an integrated functional lead frame manufacturing equipment and its lead frame. Background Technology

[0002] The lead frame is made of copper alloy coil as raw material and is formed by precision processes such as straightening, stamping and etching. The copper alloy coil is made of thin coil, which makes it easier for the subsequent lead frame to meet the miniaturization requirements.

[0003] Chinese patent CN112453242B discloses a feeding device for lead frame production, belonging to the field of lead frame technology. It includes support legs, with a flat frame mounted on the support legs. Several parallel conveyor rollers are movably arranged within the flat frame. Upper pressure rollers are mounted on the conveyor rollers and are driven by a motor via a belt. Downward-sloping conveyor frames are connected to the left and right sides of the conveyor frame, and several parallel rollers are arranged within the conveyor frame.

[0004] The aforementioned patents and prior art have the following problems:

[0005] Existing copper coils often exhibit surface unevenness due to their inherent "curl memory" effect and potential "wavy edge" problem. Current technologies attempt to eliminate these defects by straightening with rolling rollers, but for stubborn deformation areas on the copper surface, lengthy rolling straightening processes are typically required, leading to low efficiency. Furthermore, even after rolling straightening, the copper may still shift or deform again during subsequent transport due to pressure from the conveyor rollers or uneven support, thus affecting the accuracy of the final product. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] An integrated functional lead frame production equipment includes a primary straightening unit, a preforming unit, a pre-stamping unit, a secondary straightening unit, and a processing unit arranged sequentially along the material plate feeding direction;

[0009] The preforming unit includes a support plate disposed between the primary straightening unit and the processing unit for supporting the middle part of the material plate, and a traction plate disposed on the side of the support plate. The top of the traction plate is movably connected to a support frame for supporting the protruding slot.

[0010] The pre-stamping unit includes a stamping template, the side of which is provided with several receiving grooves, a material plate is provided between the stamping template and the support frame, the receiving grooves are closed with the support frame to form a raised slot on the material plate, and a pressure plate is provided at the bottom center of the stamping template for closing with the support plate and the support frame to press the material plate located at the bottom of the pressure plate into shape.

[0011] As a preferred embodiment of the integrated functional lead frame production equipment described in this invention, wherein:

[0012] The traction plates and support frames are each in pairs, and two sets of traction plates are symmetrically arranged on the side of each support plate. An open cavity is provided between the traction plates in each set.

[0013] The top surface of the traction plate is provided with a sliding groove, and several support columns are provided at intervals along the feeding direction of the material plate in the middle of the bottom surface of the traction plate.

[0014] As a preferred embodiment of the integrated functional lead frame production equipment described in this invention, wherein:

[0015] The support frame also includes an extension plate disposed at the bottom of the inner side of the support frame. The side of the extension plate is movably connected to the support plate, and the top surface of the extension plate and the top surface of the support plate are coplanar.

[0016] Positioning posts are installed on the front and rear sides of the top surface of the support frame. The positioning posts are connected to the positioning holes at the four corners of the material plate, so that the material plate is sleeved on the surface of the positioning posts through the positioning holes.

[0017] The bottom of the support frame is fixedly connected to a sliding strip, and the support frame is slidably connected through the sliding strip and the sliding groove. The support frames at the top of each group of traction plates are connected by a connecting plate.

[0018] As a preferred embodiment of the integrated functional lead frame production equipment described in this invention, wherein:

[0019] Each set of support frames has a clamping frame installed on the surface of the outer support frame, and the positioning post is located on the inner side of the clamping frame corresponding to the projection position of the clamping frame surface. A clamping push source is installed on the outer surface of the clamping frame, and the output shaft of the clamping push source moves through the clamping frame and is fixedly connected to the clamping plate.

[0020] As a preferred embodiment of the integrated functional lead frame production equipment described in this invention, wherein:

[0021] A trigger plate is fixedly connected to the bottom of the clamping frame. A through hole is opened on the surface of the trigger plate. A slide cylinder is movably arranged inside the through hole, and the inner diameter of the through hole is larger than the diameter of the slide cylinder. A movable seat is symmetrically installed on the side of the slide cylinder. The movable seat is movably connected to the surface of the transmission component. One side of the transmission component is located on the side of the first-stage straightening unit. The other side of the transmission component passes through the pre-stamping unit, the second-stage straightening unit, and the processing unit and is movably connected to the support leg. A movable drive source is installed on the surface of the support leg. The output shaft of the movable drive source movably passes through the support leg and is fixedly connected to the transmission component.

[0022] As a preferred embodiment of the integrated functional lead frame production equipment described in this invention, wherein:

[0023] A lubrication frame is installed on the side of the support frame. A connecting pipe is connected to the top of the lubrication frame. An oil filling port is connected to the top of the connecting pipe. A sponge layer is embedded in the inner side of the lubrication frame. The lubrication frame makes movable contact with the traction plate and the surface of the slide groove through the sponge layer. The connecting pipe passes through the lubrication frame and connects to the inside of the sponge layer.

[0024] The bottom of the support frame has a second slot, and the bottom of the lubrication frame has a first slot. The width of both the second slot and the first slot is greater than the diameter of the thin rod at the top of the support column.

[0025] As a preferred embodiment of the integrated functional lead frame production equipment described in this invention, wherein:

[0026] The first-level straightening unit includes a straightening bed body disposed on the side of the traction plate. A bottom roller and a top roller are rotatably disposed on the top of the straightening bed body, and a space is provided between the bottom roller and the top roller to accommodate the material plate being squeezed through.

[0027] The processing unit includes a processing bed. The top of the processing bed is connected to the upper mold via a top drive source, and the bottom of the processing bed is connected to the lower mold via a bottom drive source. The support plate is fixedly connected to the processing bed via a side plate and a straightening bed, and the traction plate and transmission component are fixedly connected to the processing bed via a support base and a straightening bed, respectively.

[0028] As a preferred embodiment of the integrated functional lead frame production equipment described in this invention, wherein:

[0029] The pre-stamping unit also includes a stamping frame body disposed on the side of the straightening bed. A stamping push source is installed on the top of the stamping frame body. The output shaft of the stamping push source passes through the stamping frame body and is fixedly connected to the stamping template. A set of pressure strips is symmetrically arranged on the outer side of the pressure plate. There are two pressure strips in a set. There are receiving grooves between the pressure plate and the pressure strips and between each set of pressure strips. The pressure strip in a set of pressure strips that is close to the pressure plate presses down to push the material plate to form an indentation between adjacent support frames.

[0030] As a preferred embodiment of the integrated functional lead frame production equipment described in this invention, wherein:

[0031] The secondary straightening unit includes a straightening frame set on the side of the stamping frame. A straightening push source is installed on the top of the straightening frame. The output shaft of the straightening push source moves through the straightening frame and is fixed to the mounting plate. A straightening drive source and a storage cavity are installed on the top of the mounting plate. The storage cavity stores lubricating oil and is connected to the spray drain through its bottom pipe.

[0032] The bottom of the mounting plate is rotatably connected to the precision roller and the coating roller via a base along the feeding direction of the material plate. A spray bar is provided between the precision roller and the coating roller. The surface of the coating roller is covered with a rubber layer, and the rubber layer protrudes from the surface of the coating roller.

[0033] Another object of the present invention is to address the shortcomings of the prior art by providing an integrated functional lead frame, comprising:

[0034] The surface of the material plate is provided with several frame bodies. The frame bodies include solder pads disposed inside the material plate. The middle and outer sides of the solder pads are covered by a surrounding enclosure. The side of the solder pad passes through the surrounding enclosure to form a pin. The middle of the solder pad is divided by a dividing strip. A cup leg is provided on the side of the solder pad opposite to the surrounding enclosure.

[0035] The beneficial effects of this invention are:

[0036] The process of initial straightening, pre-stamping, and re-straightening effectively reduces residual stress concentration in the center of the sheet metal, preventing stubborn bending of the sheet surface. During pre-stamping, the center of the sheet metal is pressed down, creating a height difference. This not only reduces lubricant leakage but also ensures it conforms to the constraints of the support frame and support plate, thus reducing sheet metal offset. Furthermore, raised grooves are stamped on the sides of the sheet metal, engaging with the support frame surface. This provides support to the raised grooves, further enhancing the sheet metal's rigidity and torque resistance. The support frame can be reused, and the two raised grooves on the sides of the sheet metal effectively isolate vibrations during transportation, further improving the overall stability of the sheet metal after pre-stamping. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below, wherein:

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 for Figure 1A magnified structural diagram of part A in the middle;

[0040] Figure 3 This is a frontal view of the overall structure of the present invention;

[0041] Figure 4 for Figure 3 A magnified structural diagram of part B in the middle section;

[0042] Figure 5 for Figure 4 A magnified structural diagram of section C;

[0043] Figure 6 This is a schematic diagram of the preformed unit structure connection of the present invention;

[0044] Figure 7 for Figure 6 A magnified structural diagram of section D in the middle;

[0045] Figure 8 This is a schematic diagram comparing the pre-stamping of the material plate of the present invention before and after;

[0046] Figure 9 This is a schematic diagram of the internal structure connection of the secondary straightening unit of the present invention;

[0047] Figure 10 for Figure 9 A magnified structural diagram of section E in the middle;

[0048] Figure 11 for Figure 9 A magnified structural diagram of section F in the middle;

[0049] Figure 12 This is a schematic diagram of the overall structure of the present invention from the bottom view.

[0050] Figure 13 for Figure 12 A magnified structural diagram of section G in the middle;

[0051] Figure 14 This is a schematic diagram of the connection of the processing unit structure of the present invention;

[0052] Figure 15 for Figure 14 A magnified structural diagram of section H in the middle;

[0053] Figure 16 This is a schematic diagram showing the connection between the material plate and the main frame structure of the present invention;

[0054] Figure 17 This is a schematic diagram of the main structure connection of the framework of the present invention;

[0055] Figure 18 This is a schematic diagram of the internal structure connection of the main frame of the present invention;

[0056] Figure 19 This is a schematic diagram of the side structure connection of the main frame of the present invention.

[0057] In the picture:

[0058] 1. First-level straightening unit; 101. Straightening bed; 1011. Straightening drive motor; 102. Bottom roller; 1021. Transmission gear; 103. Top roller; 2. Pre-forming unit; 201. Traction plate; 2011. Slide groove; 2012. Support column; 2013. Open cavity; 202. Support frame; 2021. Extension plate; 2022. Positioning column; 2023. Sliding bar; 2024. Clamping frame; 20241, Clamping and Driving Source; 20242, Clamping Plate; 20243, Trigger Plate; 2025, Connecting Plate; 2026, Lubrication Rack; 20261, Connecting Pipe; 20262, Oil Filler Port; 20263, Slot 1; 2027, Slot 2; 203, Transmission Component; 2031, Support Leg; 2032, Moving Drive Source; 2033, Slide Cylinder; 2034, Moving Base; 204, Support Plate; 20 41. Side plate; 3. Pre-stamping unit; 301. Stamping frame; 302. Stamping drive source; 303. Stamping template; 3031. Pressure plate; 3032. Pressure strip; 3033. Receiving groove; 4. Secondary straightening unit; 401. Straightening frame; 402. Straightening drive source; 403. Mounting plate; 4031. Straightening drive source; 404. Storage cavity; 4041. Sprayer; 405. Fine straightening roller; 4 06. Coating roller; 5. Processing unit; 501. Processing bed; 502. Upper mold; 5021. Top drive source; 503. Lower mold; 5031. Bottom drive source; 6. Material plate; 601. Positioning hole; 602. Raised slot; 603. Inner groove; 604. Frame body; 6041. Solder pad; 6042. Surrounding; 6043. Pin; 6044. Separator bar; 6045. Cup leg. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Example 1: This embodiment is an example Figures 1 to 15 As shown, an integrated functional lead frame production equipment includes a primary straightening unit 1, a preforming unit 2, a pre-stamping unit 3, a secondary straightening unit 4, and a processing unit 5 arranged sequentially along the feeding direction of the material plate 6;

[0061] The preforming unit 2 includes a support plate 204 for supporting the middle part of the material plate 6, which is disposed between the first-level straightening unit 1 and the processing unit 5, and a traction plate 201 disposed on the side of the support plate 204. The top of the traction plate 201 is movably connected to a support frame 202 for supporting the protruding slot 602.

[0062] The pre-stamping unit 3 includes a stamping template 303, the side of which is provided with a plurality of receiving grooves 3033. A material plate 6 is provided between the stamping template 303 and the support frame 202. The receiving grooves 3033 and the support frame 202 are closed to form a protruding slot 602 on the material plate 6. The pressure plate 3031 is provided at the bottom center of the stamping template 303 and is used to close with the support plate 204 and the support frame 202 to press the material plate 6 located at the bottom of the pressure plate 3031 into shape.

[0063] like Figures 3-5 and Figures 12-15 As shown, the traction plate 201 and the support frame 202 are each in pairs, and two sets of traction plates 201 are symmetrically arranged on the side of the support plate 204. An open cavity 2013 is provided between the traction plates 201 in each set.

[0064] The top surface of the traction plate 201 is provided with a sliding groove 2011, and a number of support columns 2012 are arranged at intervals along the feeding direction of the material plate 6 in the middle of the bottom surface of the traction plate 201. The sliding groove 2011 is composed of a thin rod at the top and a thick rod at the bottom.

[0065] like Figures 3-8 As shown, the support frame 202 also includes an extension plate 2021 disposed at the bottom inner side of the support frame 202. The side of the extension plate 2021 is movably connected to the support plate 204, and the top surface of the extension plate 2021 and the top surface of the support plate 204 are coplanar. The top surfaces of the extension plate 2021 and the support plate 204 are both provided with a wear-resistant rubber layer to avoid additional wear caused by the material plate 6 contacting the traction plate 201 and the support plate 204.

[0066] Positioning posts 2022 are installed on the front and rear sides of the top surface of the support frame 202. The positioning posts 2022 are connected to the positioning holes 601 at the four corners of the material plate 6, so that the material plate 6 is sleeved on the surface of the positioning posts 2022 through the positioning holes 601. Of course, in order to accommodate the deformation capacity of the positioning holes 601 when the material plate 6 is stamped, the diameter of the positioning holes 601 is larger than the outer diameter of the positioning posts 2022, or the shape of the positioning holes 601 can be capsule-shaped, so that the positioning posts 2022 can slide inside the capsule-shaped positioning holes 601.

[0067] The bottom of the support frame 202 is fixedly connected to a sliding strip 2023. The support frame 202 is slidably connected to the sliding groove 2011 through the sliding strip 2023. The support frames 202 at the top of each group of traction plates 201 are connected by a connecting plate 2025. Thus, when the support frame 202 moves, the inner groove 603 between the two support frames 202 will move through the connecting plate 2025. The setting of the open cavity 2013 facilitates the lifting and pulling out of the stamped protruding slot 602 at the top of the support frame 202. The traction plate 201 receives the pressure of the stamping template 303 on the support frame 202 through the sliding groove 2011. Several support columns 2012 are set at the bottom of the traction plate 201 to support the traction plate 201.

[0068] like Figures 3-8 As shown, a clamping frame 2024 is installed on the surface of the outer support frame 202 in each group of support frames 202, and the positioning post 2022 is located on the inner side of the clamping frame 2024 corresponding to the projection position of the clamping frame 2024, so that the clamping frame 2024 can accommodate the side of the protruding slot 602 bent on the inner side of the clamping frame 2024. A clamping push source 20241 is installed on the outer surface of the clamping frame 2024. The clamping push source 20241 is preferably a cylinder or electric telescopic cylinder controlled by PLC. The output shaft of the clamping push source 20241 moves through the clamping frame 2024 and is fixedly connected to the clamping plate 20242. Thus, the clamping push source 20241 pushes the clamping plate 20242 to move and clamp the outer side of the protruding slot 602 bent on the surface of the support frame 202, avoiding relative movement of the protruding slot 602 on the surface of the support frame 202.

[0069] like Figure 10As shown, a trigger plate 20243 is fixedly connected to the bottom of the clamping frame 2024. A through hole is formed on the surface of the trigger plate 20243, and a slide cylinder 2033 is movably disposed inside the through hole. The inner diameter of the through hole is larger than the diameter of the slide cylinder 2033. A movable seat 2034 is symmetrically mounted on the side of the slide cylinder 2033. The movable seat 2034 is movably connected to the surface of the transmission component 203. One side of the transmission component 203 is located on the side of the first-stage straightening unit 1, i.e., the side of the straightening bed 101. The other side of the transmission component 203 passes through the pre-stamping unit 3, the second-stage straightening unit 4, and the processing unit 5, and is movably connected to the support leg 2031. That is, the other side of the transmission component 203 passes sequentially through the stamping platform of the stamping frame 301, the straightening frame 401, and the processing bed 501, and is rotatably connected to the surface of the support leg 2031. A moving drive source 2032 is mounted on the surface of the support leg 2031. After the output shaft moves through the support leg 2031, it is fixedly connected to the transmission component 203. When the pressure plate 3031, pressure strip 3032 and receiving groove 3033 at the bottom of the stamping template 303 make pre-stamping contact with the material plate 6 at the top of the support frame 202, the trigger plate 20243 is located in the middle of the slide cylinder 2033, and there is a gap between the through hole of the slide cylinder 2033 and the trigger plate 20243, so as to avoid the support frame 202 transmitting too much stamping pressure to the transmission component 203, which would cause accidental damage to the transmission component 203. When the clamping frame 2024 needs to move, the moving seat 2034 on one side of the trigger plate 20243 moves to contact the trigger plate 20243, pushing the clamping frame 2024 and the support frame 202 to move. The moving drive source 2032 is preferably a geared motor or servo motor controlled by a PLC and an encoder. The transmission component 203 is preferably a screw or ball screw. The moving seat 2034 is preferably composed of a nut and a nut seat.

[0070] like Figure 10 , Figure 12 and Figure 13 As shown, a lubrication frame 2026 is installed on the side of the support frame 202. A connecting pipe 20261 is connected to the top of the lubrication frame 2026, and an oil filling port 20262 is connected to the top of the connecting pipe 20261. The oil filling port 20262 is connected to a lubricating oil storage chamber through a solenoid valve and an oil pump. A sponge layer is embedded in the inner side of the lubrication frame 2026. The lubrication frame 2026 is in movable contact with the surfaces of the traction plate 201 and the slide groove 2011 through the sponge layer. The connecting pipe 20261 passes through the lubrication frame 2026 and connects to the inside of the sponge layer, so that the lubricating oil inside the sponge layer is applied to the surfaces of the slide groove 2011 and the traction plate 201, thereby facilitating the smooth sliding of the support frame 202 on the surface of the traction plate 201.

[0071] The bottom of the support frame 202 is provided with a second slot 2027, and the bottom of the lubrication frame 2026 is provided with a first slot 20263. The width of both the second slot 2027 and the first slot 20263 is greater than the diameter of the thin rod at the top of the support column 2012, so as to facilitate the movement of the support frame 202 and the lubrication frame 2026 on the surface of the traction plate 201 and not interfere with the support column 2012.

[0072] like Figures 1-3 As shown, the first-stage straightening unit 1 includes a straightening bed 101 disposed on the side of the traction plate 201. A bottom roller 102 and a top roller 103 are rotatably disposed on the top of the straightening bed 101, and a space for accommodating the material plate 6 to be squeezed through is provided between the bottom roller 102 and the top roller 103. Preferably, a straightening drive motor 1011 is installed on the side of the straightening bed 101. The output shaft of the straightening drive motor 1011 is driven and meshed with the transmission gear 1021 on the side of the bottom roller 102 through the transmission gear 1021. The straightening drive motor 1011 is preferably a geared motor or a servo motor controlled by a PLC and an encoder.

[0073] like Figure 3 and Figure 14 As shown, the processing unit 5 includes a processing bed 501. The top of the processing bed 501 is connected to the upper mold 502 via a top drive source 5021, and the bottom of the processing bed 501 is connected to the lower mold 503 via a bottom drive source 5031. The support plate 204 is fixedly connected to the processing bed 501 via a side plate 2041 and a straightening bed 101. The traction plate 201 and the transmission component 203 are fixedly connected to the processing bed 501 via a support base and a straightening bed 101. The traction plate 201 is connected to the processing bed 501 via a short support column 201. 2. The stamping platform on the top surface of the middle part of the machining bed 501 is fixedly connected. The lower mold 503 is movably embedded in the surface of the stamping platform. The mold of the lower mold 503 is preferably composed of the bottom surface and the outline of the outer side of the bottom surface, so that the bottom surface is pushed upward by the bottom drive source 5031, so that the stamped part inside the lower mold 503 is pushed out from the inside of the lower mold 503. At this time, the outline of the outer side of the bottom surface is fixed and connected to the machining bed 501. The top drive source 5021 and the bottom drive source 5031 are preferably PLC-controlled cylinders, electric telescopic cylinders, or hydraulic cylinders.

[0074] like Figures 1-3 and Figures 4-7As shown, the pre-stamping unit 3 also includes a stamping frame 301 disposed on the side of the straightening bed 101. A stamping push source 302 is installed on the top of the stamping frame 301. The output shaft of the stamping push source 302 passes through the stamping frame 301 and is fixedly connected to the stamping template 303. A set of pressure strips 3032 are symmetrically arranged on the outer side of the pressure plate 3031. There are two pressure strips 3032 in a set. A receiving groove 3033 is provided between the pressure plate 3031 and the pressure strips 3032 and between each set of pressure strips 3032. The pressure strip 3032 that is close to the pressure plate 3031 in a set of pressure strips 3032 presses down to push the material plate 6 to form an indentation groove 603 between adjacent support frames 202.

[0075] The secondary straightening unit 4 includes a straightening frame 401 disposed on the side of the stamping frame 301. A straightening push source 402 is installed on the top of the straightening frame 401. The output shaft of the straightening push source 402 passes through the straightening frame 401 and is fixed to the mounting plate 403. A straightening drive source 4031 and a storage cavity 404 are installed on the top of the mounting plate 403. The straightening drive source 4031 is preferably a geared motor or servo motor controlled by a PLC and an encoder. The storage cavity 404 stores lubricating oil. The storage cavity 404 is connected to the spray outlet 4041 through its bottom pipe. An electromagnetic proportional valve is installed on the surface of the bottom pipe of the storage cavity 404. Of course, an oil pump can be installed in the middle of the pipeline so that the lubricating oil inside the storage cavity 404 is pumped by the oil pump and sprayed onto the surface of the material plate 6 that has moved to its bottom through the spray outlet 4041.

[0076] The bottom of the mounting plate 403 is rotatably connected to the precision roller 405 and the applicator roller 406 via a base along the feeding direction of the material plate 6. A spray bar 4041 is provided between the precision roller 405 and the applicator roller 406. The pulley on the output shaft surface of the straightening drive source 4031 is connected to the pulleys on the sides of the applicator roller 406 and the precision roller 405 via belt drive, or the sprocket on the output shaft surface of the straightening drive source 4031 is connected to the sprockets on the sides of the applicator roller 406 and the precision roller 405 via chain drive. The applicator roller 406... The surface is covered with a rubber layer, which protrudes from the surface of the applicator roller 406. The width of the fine-adjustment roller 405 and the applicator roller 406 is matched with the distance between the traction plate 201 near the support plate 204, so that the fine-adjustment roller 405 and the applicator roller 406 roll the lower pressing plate 6 between the traction plate 201 near the support plate 204, that is, the middle part of the material plate 6. At this time, the material plate 6 is located at the top of the traction plate 201 and the support plate 204. The stamping push source 302 and the straightening push source 402 are preferably hydraulic cylinders or air cylinders and are controlled by PLC.

[0077] Operation process:

[0078] By starting the straightening drive motor 1011, the straightening drive motor 1011 drives the bottom roller 102 to rotate through the transmission gear 1021. Then, the material to be processed, i.e., the material plate 6, is pushed through the space between the bottom roller 102 and the top roller 103 by manual means. After passing through, the straightening drive motor 1011 is reversed and manually pulled outward to return the material plate 6. By repeating the above process, after reaching the preset number of times, the material plate 6 itself has completed the initial straightening and its surface has been initially flattened. After the material plate 6 passes through the space between the bottom roller 102 and the top roller 103, the positioning holes 601 on the surface of the material plate 6 are manually fitted onto the surface of the positioning posts 2022, so that the four corners of the material plate 6 are fixed by the positioning posts 2022, thereby completing the initial installation and positioning of the material plate 6. In the above process, manual judgment can be combined with a combination of robotic arms and vision cameras to determine whether the material plate 6 has reached the initial flatness, i.e., without excessive bending. Alternatively, it can be based on the summary of production, which indicates how many reciprocations are needed for the material plate 6 to basically complete the initial straightening. Then, the robotic arm can replace the manual reciprocating push, and the vision camera can be used to judge the surface flatness of the material plate 6. When the preset flatness is reached, i.e., after the statistically calculated average number of reciprocations is reached, the robotic arm pushes the initially straightened material plate 6 through the space between the bottom roller 102 and the top roller 103, and then the robotic arm places the positioning hole 601 of the material plate 6 on the surface of the positioning post 2022 on the top of the support frame 202.

[0079] After the material plate 6 is initially fixed to the positioning post 2022 on the surface of the support frame 202, the support frame 202 is located at the bottom of the stamping template 303, and the trigger plate 20243 is located in the middle of the slide cylinder 2033. Then, the stamping push source 302 is activated, causing the stamping push source 302 to drive the stamping template 303 towards the material plate 6 on the surface of the support frame 202. Finally, the pressure plate 3031 at the bottom center of the stamping template 303 pushes the middle of the material plate 6 towards the support frame 202. The inner side of plate 2 is recessed, so that it contacts the extension plate 2021 and the support plate 204, while the outer side of plate 6 is pushed down by the pressure strips 3032 on both sides of the bottom of the stamping template 303, so that the receiving groove 3033 near the pressure plate 3031 pushes the side of plate 6 to form on the inner support frame 202 surface, and the receiving groove 3033 away from the pressure plate 3031 pushes plate 6 to form on the outer support frame 202 surface, thereby forming the protruding slot 602;

[0080] The pressure strip 3032 between the two receiving grooves 3033 at the bottom of the stamping template 303 stamps the bottom material plate 6 into the space between the two support frames 202, forming the recessed groove 603. Finally, the middle part of the material plate 6 is stamped and recessed between the two support frames 202 on the inner side, so that the material plate 6 at this position is further stamped and shaped, reducing the phenomenon of stubborn bending on the surface of the material plate 6. In addition, protruding slots 602 and recessed grooves 603 that are relatively raised in the middle of the material plate 6 are formed on both sides of the material plate 6, which further increases the overall torque resistance of the material plate 6 and prevents the material plate 6 from being driven to shift and bend again in subsequent multiple processes.

[0081] The formed protruding groove 602 is completely wrapped around the surface of the support frame 202, so that the hollow protruding groove 602 is supported by the support frame 202. The combination of the protruding groove 602 and the support frame 202 further improves the torque resistance of the material plate 6. The support frame 202 can move on the surface of the traction plate 201 and provide support inside the protruding groove 602, improving its rigidity. At the same time, the design of the recessed groove 603 engaging between the two support frames 202 further reduces the offset of the material plate 6 during the transfer to subsequent processes, and reduces the easy floating and bending of the material plate 6 due to its thin plate material characteristics.

[0082] During this process, there is a gap between the sliding cylinder 2033 and the trigger plate 20243. Therefore, when the stamping template 303 pre-stamps the material plate 6, most of the pressure will only act on the support frame 202 and the traction plate 201, and will not put pressure on the transmission component 203, causing it to be damaged. The long strip-shaped support frame 202 is slidably supported by the traction plate 201 and supported by multiple support columns 2012, which improves the service life of the support frame 202 and the traction plate 201 under pressure. Moreover, the support frame 202 can immediately support the protruding slot 602 after the stamping template 303 stamps, which improves efficiency. Furthermore, the support frame 202 can be reused to support the protruding slot 602.

[0083] When the material plate 6 is stamped by the stamping template 303, the stamping template 303 is lifted and reset, and then the clamping push source 20241 on the surface of the clamping frame 2024 is activated. The clamping push source 20241 drives the clamping plate 20242 to move closer to the protruding slot 602 that is attached to the surface of the outer support frame 202. This fixes the side of the protruding slot 602 bent on the outer surface of the support frame 202 to the surface of the support frame 202, thus restricting the outer protruding slot 602 between the outer support frame 202 and the clamping plate 20242.

[0084] After the material plate 6 is pre-stamped, the stamping template 303 is reset. Then, under the control of the encoder and PLC, the two moving drive sources 2032 rotate synchronously in a forward direction, causing the moving drive sources 2032 to drive the transmission component 203 to rotate. This causes the slide cylinder 2033 to move forward with the transmission component 203. Finally, the moving seat 2034, which is opposite to the forward direction of the slide cylinder 2033, contacts the trigger plate 20243 at the bottom of the clamping frame 2024. This causes the slide cylinder 2033 to drive the clamping frame 2024, support frame 202, and material plate 6 to move forward along the transmission component 203, i.e., in the feeding direction of the material plate 6. When it is necessary for the support frame 202 and clamping frame 2024 to move away from the feeding direction of the material plate 6, the slide cylinder 2033 moves forward. Then the moving drive source 2032 can be reversed, so that the moving seat 2034, which is opposite to the forward direction of the slide cylinder 2033, moves away from the trigger plate 20243, and the other moving seat 2034 moves closer to the trigger plate 20243. This causes the slide cylinder 2033 to push the support frame 202 to move through the other moving seat 2034. When the support frame 202 moves to the bottom of the stamping template 303, the moving drive source 2032 is rotated forward for a preset time, so that the other moving seat 2034 also moves away from the trigger plate 20243, so that the middle part of the slide cylinder 2033 is opposite to the trigger plate 20243. This completes the initial state in which the trigger plate 20243 is located in the middle of the slide cylinder 2033 during the stamping process of the material plate 6.

[0085] As the support frame 202 moves forward along the transmission component 203 with the moving seat 2034, the middle part of the material plate 6 always slides on the surface of the clamping frame 2024, further reducing the sagging of the material plate 6 after stamping. Two support frames 202 are provided, with the outer support frame 202 being driven forward by the moving seat 2034, while the inner support frame 202 isolates the movement of the outer support frame 202. This isolates the minor vibrations and lateral forces caused by the movement of the protruding slot 602 at the top of the outer support frame 202, preventing them from being transmitted to the sinking middle part of the material plate 6. This avoids the pulling and adverse effects of the protruding slot 602 being clamped and moved on the sinking middle part of the material plate 6. Combined with the support of the extension plate 2021 at the bottom of the support frame 202 for the middle part of the material plate 6 and the support for the movement of the middle part of the material plate 6 along the support plate 204, this further reduces the offset and vibration of the material plate 6 during transportation.

[0086] When the material plate 6 moves to the bottom of the straightening frame 401 along with the trigger plate 20243 and the moving seat 2034, the straightening frame 401 is activated. This causes the straightening frame 401 to move the mounting plate 403 closer to the extension plate 2021 and the support plate 204, specifically towards the central sinking area of ​​the material plate 6. Ultimately, the precision roller 405 and the coating roller 406 at the bottom of the stamping template 303 contact the material plate 6 at the top of the extension plate 2021 and the support plate 204, and the straightening drive source 4031 is activated. The straightening drive source 4031 then drives the precision roller 405 and the coating roller 406... Roller 406 rotates, which, in conjunction with the forward and reverse rotation of transmission component 203 and moving drive source 2032, causes material plate 6 to reciprocate at the bottom of precision roller 405 and coating roller 406, thereby rolling material plate 6 again and completing secondary precision straightening of material plate 6, further reducing its surface unevenness. This process of initial straightening, pre-stamping, and then straightening reduces the concentration of residual stress in the middle of material plate 6, providing a foundation for subsequent stamping of material plate 6 in this area to form lead frame, which is suitable for the production of high-precision lead frame.

[0087] As the material plate 6 reciprocates at the bottom of the coating roller 406, the oil pump connected to the bottom of the storage chamber 404 is activated. This causes the lubricating oil inside the storage chamber 404 to be sprayed onto the surface of the material plate 6 at the bottom of the coating roller 406 through the spray nozzle 4041. This ensures that the central surface of the material plate 6 is coated with lubricating oil, and the rolling of the coating roller 406 further ensures that the central surface of the material plate 6 is evenly coated with lubricating oil. The material plate 6 has a raised groove 602 recessed into the side of the support frame 202 relative to its surface, creating a height difference between the material plate 6 and the raised groove 602. Therefore, when the lubricating oil sprayed onto the central part of the material plate 6 by the spray nozzle 4041 is evenly spread by the coating roller 406, the lubricating oil in the central part of the material plate 6 will not leak from its sides, thus improving the retention effect of the lubricating oil on the surface of the material plate 6. Furthermore, the stable connection between the raised groove 602 and the support frame 202 further reduces the risk of the lubricating oil film on the surface of the material plate 6 shifting to the sides of the material plate 6 during transport, preventing leakage.

[0088] After the material plate 6 has moved back and forth a preset number of times at the bottom of the precision roller 405 and the coating roller 406, the precision roller 405 and the coating roller 406 are lifted, so that the material plate 6 continues to move to the surface of the stamping platform in the processing bed 501. The support plate 204 is only set on the side of the processing bed 501. When the material plate 6 enters the interior of the stamping platform of the processing bed 501, the support plate 204 no longer supports the bottom end of the middle part of the material plate 6, so that it is exposed. Then, when the material plate 6 is driven by the transmission component 203 into the interior of the stamping platform, that is, between the upper mold 502 and the lower mold 503, the top drive source 5021 is activated, so that the top drive source 5021 drives the upper mold 502 to press down and squeeze the area in the middle of the material plate 6 that was originally supported by the support plate 204. Finally, this area moves down with the upper mold 502 and contacts the lower mold 503, so that the frame body 604 is formed between the two.

[0089] After stamping, the clamping push source 20241 drives the clamping plate 20242 to retract a preset distance, releasing the restriction on the protruding slot 602 between the support frame 202 and the clamping plate 20242. This leaves only space for the protruding slot 602 to move up and down against the bent surface of the support frame 202. Then, the bottom drive source 5031 is activated, pushing the bottom surface of the lower die 503 upward. At this time, the side wall of the lower die 503 remains stationary, while the bottom surface of the lower die 503 rises, causing the bottom surface of the lower die 503 to lift the material plate 6. Once it reaches the original unstamped height, the lower die 503 is reset, and then the clamping plate 202... 42. The forward movement causes the bent side of the protruding slot 602 to fit against the surface of the support frame 202, completing a second fixation. This allows the transmission component 203, via the moving seat 2034 and the trigger plate 20243, to move the support frame 202 and the stamped material plate 6 away from the processing unit 5 and into the next process. The stable engagement of the protruding slot 602 and the support frame 202 reduces the stamping vibration of the material plate 6 caused by the closure of the upper mold 502 and lower mold 503, reducing its offset and accidental bending. After all processes are completed, the material plate 6 can be moved to the opening of the traction plate 201, allowing manual or robotic removal of the material plate 6 from the surface of the support frame 202. To improve the separation effect between the protruding slot 602 and the support frame 202, lubricating oil can be pre-applied to the surface of the support frame 202, or a low-friction coefficient coating can be applied to the surface of the support frame 202.

[0090] Of course, the raised groove 602 and the frame body 604 formed by stamping in the middle of the material plate 6 need to be separated. This process can be achieved by adding a cutting blade to the side of the upper mold 502, so that when the upper mold 502 and the lower mold 503 are closed, the cutting blade can cut and separate the connection between the material plate 6 and the raised groove 602, forming a shape like... Figure 16 The structure shown. It can also be cut before the raised slot 602 is removed from the surface of the support frame 202.

[0091] In summary, the process of initial straightening, pre-stamping, and re-straightening effectively reduces residual stress concentration in the middle of the sheet metal 6, preventing stubborn bending of the sheet metal 6 surface. During pre-stamping, the middle of the sheet metal 6 is pressed down, creating a height difference. This not only reduces lubricant leakage but also ensures it conforms to the constraints of the support frame 202 and support plate 204, thereby reducing the offset of the sheet metal 6. Furthermore, the sides of the sheet metal 6 are stamped to form raised grooves 602, which engage with the surface of the support frame 202. The support frame 202 provides support for the raised grooves 602, further enhancing the rigidity and torque resistance of the sheet metal 6. The support frame 202 can be reused repeatedly, and the two raised grooves 602 on the sides of the sheet metal 6 effectively isolate vibrations during transportation, further improving the overall stability of the sheet metal 6 after pre-stamping.

[0092] Example 2: This embodiment differs from the first embodiment in that:

[0093] Specifically, such as Figures 16-19 As shown, an integrated functional lead frame includes:

[0094] The surface of the material plate 6 is provided with a plurality of frame bodies 604. The frame bodies 604 are preferably formed by closing and stamping of the upper mold 502 and the lower mold 503. The frame bodies 604 include solder pads 6041 disposed inside the material plate 6. The middle and outer sides of the solder pads 6041 are covered by surrounds 6042. The side of the solder pads 6041 passes through the surrounds 6042 to form pins 6043. The middle of the solder pads 6041 is divided by a partition strip 6044. A cup leg 6045 is provided on the side of the solder pads 6041 opposite to the surrounds 6042. The surrounds 6042, the partition strips 6044 and the cup leg 6045 are preferably made of plastic.

[0095] By forming a partitioned enclosure 6042 in the middle of pad 6041, an integrated dual die-bonding pad is formed, which facilitates the subsequent installation of different LED chips, realizes the switching between any two colors of white light / yellow light / red light, simplifies material management, reduces costs and reduces module size.

Claims

1. An integrated functional lead frame production equipment, characterized in that, It includes a primary straightening unit (1), a preforming unit (2), a pre-stamping unit (3), a secondary straightening unit (4), and a processing unit (5) arranged sequentially along the feeding direction of the material plate (6); The preforming unit (2) includes a support plate (204) for supporting the middle part of the material plate (6) between the first-level straightening unit (1) and the processing unit (5), and a traction plate (201) for supporting the side of the support plate (204). The top of the traction plate (201) is movably connected to a support frame (202) for supporting the protruding slot (602). The pre-stamping unit (3) includes a stamping template (303), the side of which is provided with a plurality of receiving grooves (3033), a material plate (6) is provided between the stamping template (303) and the support frame (202), the receiving grooves (3033) and the support frame (202) are closed to form a protruding slot (602) on the material plate (6), and a pressure plate (3031) is provided at the bottom center of the stamping template (303) for closing with the support plate (204) and the support frame (202) to press the material plate (6) located at the bottom of the pressure plate (3031) into shape; The traction plate (201) and the support frame (202) are each in pairs. Each support plate (204) has a set of traction plates (201) symmetrically arranged on its side. An open cavity (2013) is provided between the traction plates (201) in each set. The support frame (202) also includes an extension plate (2021) disposed at the bottom of the inner side of the support frame (202). The side of the extension plate (2021) is movably connected to the support plate (204), and the top surface of the extension plate (2021) and the top surface of the support plate (204) are coplanar. Positioning posts (2022) are installed on the front and rear sides of the top surface of the support frame (202). The positioning posts (2022) are connected to the positioning holes (601) at the four corners of the material plate (6), so that the material plate (6) is sleeved on the surface of the positioning post (2022) through the positioning holes (601). The diameter of the positioning hole (601) is larger than the outer diameter of the positioning post (2022). The pre-stamping unit (3) also includes a stamping frame (301) disposed on the side of the straightening bed (101). A stamping push source (302) is installed on the top of the stamping frame (301). The output shaft of the stamping push source (302) passes through the stamping frame (301) and is fixedly connected to the stamping template (303). A set of pressure strips (3032) are symmetrically arranged on the outer side of the pressure plate (3031). There are two pressure strips (3032) in a set. A receiving groove (3033) is provided between the pressure plate (3031) and the pressure strips (3032) and between each set of pressure strips (3032). The pressure strip (3032) that is close to the pressure plate (3031) in a set of pressure strips (3032) presses down to push the material plate (6) to form an indentation groove (603) between adjacent support frames (202).

2. The integrated functional lead frame production equipment as described in claim 1, characterized in that: The top surface of the traction plate (201) is provided with a sliding groove (2011), and a number of support columns (2012) are provided at intervals along the feeding direction of the material plate (6) in the middle of the bottom surface of the traction plate (201).

3. The integrated functional lead frame production equipment as described in claim 1, characterized in that: The bottom of the support frame (202) is fixedly connected to a sliding bar (2023), and the support frame (202) is slidably connected through the sliding bar (2023) and the slide groove (2011). The support frames (202) at the top of each group of traction plates (201) are connected by connecting plates (2025).

4. The integrated functional lead frame production equipment as described in claim 2, characterized in that: Each set of support frames (202) has a clamping frame (2024) mounted on the surface of the outer support frame (202), and the positioning post (2022) is located on the inner side of the clamping frame (2024) corresponding to the projection position of the surface of the clamping frame (2024). A clamping push source (20241) is mounted on the outer surface of the clamping frame (2024). The output shaft of the clamping push source (20241) moves through the clamping frame (2024) and is fixedly connected to the clamping plate (20242).

5. The integrated functional lead frame production equipment as described in claim 4, characterized in that: A trigger plate (20243) is fixedly connected to the bottom of the clamping frame (2024). A perforation is formed on the surface of the trigger plate (20243), and a sliding cylinder (2033) is movably disposed inside the perforation. The inner diameter of the perforation is larger than the diameter of the sliding cylinder (2033). A movable seat (2034) is symmetrically mounted on the side of the sliding cylinder (2033). The movable seat (2034) is movably connected to the surface of the transmission component (203). One side of the transmission component (203) is located on the side of the first-stage straightening unit (1). The other side passes through the pre-stamping unit (3), the secondary straightening unit (4) and the processing unit (5) and is movably connected to the support leg (2031). The surface of the support leg (2031) is equipped with a moving drive source (2032). The output shaft of the moving drive source (2032) moves through the support leg (2031) and is fixedly connected to the transmission component (203). The moving seat (2034) on one side of the trigger plate (20243) moves to contact the trigger plate (20243) and pushes the clamping frame (2024) and the support frame (202) to move.

6. The integrated functional lead frame production equipment as described in claim 2, characterized in that: A lubrication frame (2026) is installed on the side of the support frame (202). A connecting pipe (20261) is connected to the top of the lubrication frame (2026). An oil filling port (20262) is connected to the top of the connecting pipe (20261). A sponge layer is embedded in the inner side of the lubrication frame (2026). The lubrication frame (2026) is in movable contact with the surface of the traction plate (201) and the slide groove (2011) through the sponge layer. The connecting pipe (20261) passes through the lubrication frame (2026) and connects to the inside of the sponge layer. The bottom of the support frame (202) is provided with a second slot (2027), and the bottom of the lubrication frame (2026) is provided with a first slot (20263). The width of both the second slot (2027) and the first slot (20263) is greater than the diameter of the thin rod at the top of the support column (2012).

7. The integrated functional lead frame production equipment as described in claim 1, characterized in that: The first-level straightening unit (1) includes a straightening bed (101) disposed on the side of the traction plate (201). The top of the straightening bed (101) is rotatably provided with a bottom roller (102) and a top roller (103), and a space is provided between the bottom roller (102) and the top roller (103) to accommodate the material plate (6) being squeezed through. The processing unit (5) includes a processing bed (501). The top of the processing bed (501) is connected to the upper mold (502) via a top drive source (5021), and the bottom of the processing bed (501) is connected to the lower mold (503) via a bottom drive source (5031). The support plate (204) is fixedly connected to the processing bed (501) via a side plate (2041) and a straightening bed (101), respectively. The traction plate (201) and the transmission component (203) are fixedly connected to the processing bed (501) via a support seat and a straightening bed (101), respectively.

8. The integrated functional lead frame production equipment as described in claim 7, characterized in that: The secondary straightening unit (4) includes a straightening frame (401) disposed on the side of the stamping frame (301). A straightening push source (402) is installed on the top of the straightening frame (401). The output shaft of the straightening push source (402) passes through the straightening frame (401) and is fixed to the mounting plate (403). A straightening drive source (4031) and a storage cavity (404) are installed on the top of the mounting plate (403). The storage cavity (404) stores lubricating oil inside and is connected to the spray drain (4041) through its bottom pipe. The bottom of the mounting plate (403) is rotatably connected to the precision roller (405) and the applicator roller (406) via a base along the feeding direction of the material plate (6). A spray bar (4041) is provided between the precision roller (405) and the applicator roller (406). The surface of the applicator roller (406) is covered with a rubber layer, and the rubber layer protrudes from the surface of the applicator roller (406).

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