A novel encapsulation system rotary linear pull claw feeding mechanism and feeding method

Abstract

The application discloses a novel encapsulation system rotary linear pull claw feeding mechanism and a feeding method. The mechanism comprises a rack, and the top of the rack is provided with a storage part comprising a tooth-shaped material box. The inside of the tooth-shaped material box is provided with tooth grooves on both side walls for layer-by-layer stacking of lead frame sides. The lifting and material arranging part is used for adjusting the height of the tooth-shaped material box. By setting the vertical pushing plate linked with the clamping action, the synchronous pushing force is provided at the far end of the frame, and the pulling force of the clamping end is balanced, preventing the middle arching or the far end lagging and twisting of the frame due to uneven stress. By the synchronous composite stress mode of pulling, lifting and pushing, the all-round feeding protection is provided for the ultra-thin frame with weak rigidity, the probability of deformation of the material frame in the transferring process from the material box to the work station is reduced, and thus the success rate of feeding and the yield of the subsequent encapsulation process are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of semiconductor packaging technology, and in particular to a novel rotary linear puller feeding mechanism and feeding method for a packaging system. Background Technology

[0002] In the front-end processes of semiconductor packaging, the first step is to automatically and individually separate stacked lead frames and precisely load them onto the transmission line or preheating station to prepare for subsequent precision operations such as chip mounting and wire bonding. Currently, the industry commonly uses a "push-out" or "ejection" loading mechanism. The process is as follows: stacked frames are placed in a cassette; a lifting mechanism raises the top frame in the cassette to be level with the outlet; then, a pusher cylinder mounted on one side of the cassette drives a pusher plate to horizontally push the individual frame out of the cassette, allowing it to slide into or fall onto a fixed receiving station (such as a guide rail or receiving platform).

[0003] However, when faced with lead frames that are extremely thin (e.g., <0.15mm) and large in size (e.g., 300mm x 100mm), this traditional "push-out" feeding method results in deformation due to frictional resistance between the frame and the inner wall of the material box and the discharge guide groove during the push-out process. Simultaneously, as the pusher plate pushes the frame out, the front end of the frame (the end furthest from the pusher plate) becomes suspended after detaching from the material box support. For frames with extremely thin thickness and poor rigidity, this suspended portion is highly susceptible to downward bending deformation under its own weight.

[0004] Therefore, this application provides a novel rotary linear puller feeding mechanism and feeding method for a packaging system to meet the requirements. Summary of the Invention

[0005] The purpose of this application is to provide a novel rotary linear pull claw feeding mechanism and feeding method for a packaging system, which solves the technical problem that existing push-out feeding methods, when dealing with ultra-thin, large-size lead frames, cause plastic deformation such as bending and twisting of the frame due to the front end being suspended, lacking support, and frictional resistance during the push-out process, thus seriously affecting the feeding success rate and the yield of subsequent packaging processes.

[0006] To achieve the above objectives, this application provides the following technical solution: a novel rotary linear puller feeding mechanism for a packaging system, comprising a frame, wherein the top of the frame is provided with:

[0007] The storage section includes a toothed material box, the inner two side walls of which are provided with toothed grooves for stacking the lead wire frame layer by layer.

[0008] The lifting and adjusting section is used to adjust the height of the toothed material box;

[0009] The rotary table includes a rotating plate and a motor that drives the rotating plate to rotate. The top of the rotating plate is provided with at least two receiving stations formed by two side beams and a middle beam.

[0010] The lead screw motor drive unit is used to provide linear drive;

[0011] The pull claw part includes a connecting plate that is driven and connected to the lead screw motor drive part, and also includes a traction seat, a fixed clamping block, a cylinder and a movable clamping block. The fixed clamping block is fixed to the side of the traction seat near the toothed material box. The cylinder is mounted on the traction seat. The movable clamping block is connected to the output end of the cylinder. The pull claw part also includes a support rod mechanism that can automatically unfold and provide support for the bottom of the lead wire frame during the process of picking up material and transferring the lead wire frame by the traction seat.

[0012] As a preferred embodiment of this invention, the support rod mechanism is as follows:

[0013] It includes at least two support rods rotatably connected to the bottom of the traction seat, and an unfolding drive assembly for driving the support rods to rotate from a drooping state to a horizontal working state;

[0014] In a preferred embodiment of this invention, the deployment driving component includes:

[0015] A transmission groove is symmetrically opened at the bottom of the traction seat, and the support rod is rotatably connected in the transmission groove;

[0016] A push plate that is slidably disposed within the transmission groove;

[0017] A roller connected to one side of the push plate is rotated, and the roller is used to abut against and push the support rod to rotate when the push plate slides;

[0018] The first toothed rack is fixed to the bottom of the push plate;

[0019] The first gear, which is rotatably connected to the traction seat and meshes with the first rack, is used.

[0020] A second rack fixed to the frame and capable of meshing with the first gear; the two second racks are connected and fixed to the frame by a fixing bracket.

[0021] When the traction seat is driven to move toward the toothed material box, and the first gear meshes with the second rack, the first gear rotates and drives the first rack and push plate to slide toward the toothed material box, thereby pushing the support rod to a horizontal working state through the roller.

[0022] In a preferred embodiment of this invention, a remote pushing mechanism is provided between the two support rods, which includes a pusher plate rotatably connected between the two support rods, and a linkage component driven by the cylinder to rotate the pusher plate from a horizontal state to a vertical state when clamping the frame.

[0023] In a preferred embodiment of this invention, the linkage component includes:

[0024] The third rack is fixed to both sides of the movable clamping block;

[0025] A rotating shaft is rotatably connected to the support rod, and a second gear that can mesh with the third rack is coaxially fixed on the rotating shaft, and a main traction rod is fixedly connected thereto;

[0026] A rotating shaft is rotatably connected between the two support rods, and the pusher plate is fixed on the rotating shaft;

[0027] A traction rod fixed to the rotating shaft;

[0028] The traction wire connecting the main traction rod and the secondary traction rod;

[0029] A torsion spring acts on the rotating shaft to give the pusher plate a tendency to maintain a horizontal state;

[0030] When the cylinder drives the moving clamp block to move down to the clamping position, the third rack meshes with the second gear and drives the second gear, the rotating shaft and the main traction rod to rotate. The traction wire pulls the traction rod, causing the rotating shaft to rotate against the torsion spring torque, thereby flipping the pusher plate from a horizontal state to a vertical state.

[0031] In a preferred embodiment of this invention, two rotating plates are symmetrically fixedly connected to the rotating shaft, and the torsion spring acts between the rotating plates and the support rod.

[0032] In a preferred embodiment of this invention, the lifting and assembling unit includes a vertical frame fixedly connected to the machine frame, a first hydraulic rod is installed on the top of the vertical frame, the output end of the first hydraulic rod is connected to a lifting seat, and the toothed material box is fixed to one side of the lifting seat.

[0033] In a preferred embodiment of this invention, the lead screw motor drive unit includes an L-shaped support plate fixed to the frame, a lead screw is rotatably connected to the L-shaped support plate, a first servo motor for driving the lead screw to rotate is mounted on the L-shaped support plate, and a movable seat connected to a traction seat is threaded onto the lead screw.

[0034] In a preferred embodiment of this invention, the lead screw motor drive unit further includes a first slide rail fixed to the L-shaped support plate, the movable seat being slidably connected to the first slide rail, and the lead screw motor drive unit further includes a synchronous pulley fixed to the output shaft of the first servo motor and one end of the lead screw, and a synchronous belt connecting the two synchronous pulleys.

[0035] A feeding method employing a novel rotary linear gripper feeding mechanism in a packaging system includes the following steps:

[0036] S1. Place the stacked lead frames into the toothed groove of the toothed material box, adjust the height of the toothed material box by lifting the material raising part, align the height of the lead frame to be picked up with the height of the fixed clamp block, and drive the rotary table to rotate an empty receiving station to align with the discharge port of the toothed material box.

[0037] S2. Start the screw motor drive unit to drive the traction seat to move towards the toothed material box. During the movement of the traction seat, the support rod of the support rod mechanism is automatically deployed and driven by the drive component to rotate from the drooping state to the horizontal working state.

[0038] S3. When the traction seat moves to the position of the lead frame to be picked up, the cylinder is activated to drive the moving clamping block to move downward, and cooperate with the fixed clamping block to hold the lead frame.

[0039] S4. The screw motor drive unit reverses the drive, causing the traction seat to move the clamped lead frame towards the receiving station. During this movement, the support rod, which is in a horizontal working state, moves synchronously with the traction seat, continuously providing bottom support for the cantilevered part of the lead frame.

[0040] S5. Place the lead frame in the receiving station;

[0041] S6. The cylinder drives the moving clamp block to rise and release the lead wire frame. The screw motor drives the traction seat to reset. During the reset movement of the traction seat, the support rod is driven to rotate from the horizontal working state to the drooping state.

[0042] S7. Drive the rotating plate of the rotating table to rotate, rotate the receiving station carrying the lead frame out, and rotate another empty receiving station into the position aligned with the discharge port of the toothed material box. As a preferred embodiment of this embodiment, the pushing part also includes a pushing cylinder installed on one side of the toothed material box, and the output end of the pushing cylinder is fixed with a pushing plate.

[0043] In summary, the technical effects and advantages of this invention are as follows:

[0044] 1. The present invention has a reasonable structure. By setting the pull claw, the frame can be moved out of the toothed material box for feeding by clamping and pulling. After the frame is clamped, its entire movement process is controlled traction rather than single-point pushing. The force point of the frame is located in its main body. The driving force of movement is evenly transmitted through the clamping surface, avoiding the probability of local deformation caused by the force being concentrated at a certain point at the tail when it is pushed out.

[0045] 2. In this invention, the automatically unfolding horizontal support rods provide continuous and stable support at the bottom of the frame, effectively overcoming the downward bending tendency of the frame due to its own weight, and improving the success rate of material loading and the yield rate of subsequent packaging processes.

[0046] 3. In this invention, by setting a vertical pusher plate that is linked to the clamping action, a synchronous pushing force is provided at the far end of the frame, which is balanced with the tension at the clamping end. This prevents the frame from arching in the middle or lag-twisting at the far end due to uneven force. By using a synchronous composite force of pulling, lifting and pushing, all-round material feeding protection is provided for the relatively weak ultra-thin frame, reducing the probability of deformation of the frame during the transfer from the material box to the work station, thereby significantly improving the success rate of material feeding and the yield rate of subsequent packaging processes. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a front view structural diagram of the present invention;

[0049] Figure 2 for Figure 1 Schematic diagram of the structure of section A;

[0050] Figure 3 This is a structural diagram of the material storage section and the lifting and straightening section.

[0051] Figure 4 This is a schematic diagram of the rotating platform.

[0052] Figure 5 This is a schematic diagram of the drive unit of the lead screw motor.

[0053] Figure 6 This is a schematic diagram of the pull claw section.

[0054] Figure 7 for Figure 6 Schematic diagram of section B in the middle;

[0055] Figure 8 This is a structural schematic diagram of the pull claw from another perspective.

[0056] In the diagram: 1. Material storage section; 101. Toothed material box; 102. Toothed groove; 2. Lifting and straightening section; 201. Frame; 203. Lifting seat; 204. First hydraulic rod; 3. Rotary table section; 301. Rotating plate; 302. Side beam; 303. Middle beam; 304. Receiving station; 4. Screw motor drive section; 401. L-shaped support plate; 402. First servo motor; 403. Screw; 404. Moving seat; 405. First slide rail; 406. Synchronous pulley; 407. Synchronous belt; 5. Claw section; 501. Connecting plate; 502. 503. Traction seat; 504. Fixed clamping block; 505. Cylinder; 506. Moving clamping block; 507. Support rod; 508. Transmission groove; 509. Push plate; 510. Roller; 511. First rack; 512. First gear; 513. Second rack; 514. Fixed frame; 515. Rotating shaft; 516. Third rack; 517. Second gear; 518. Main traction rod; 519. Traction wire; 520. Rotating shaft; 521. Push plate; 522. Limiting rod; 523. Driven traction rod; 524. Torsion spring; 525. Rotating plate; 6. Frame. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0058] Example: Reference Figure 1-2 The novel packaging system rotary linear puller feeding mechanism shown includes a frame 6, which is a rigidly welded or bolted structural frame. The top of the frame 6 is equipped with:

[0059] like Figure 3 As shown, the storage section 1 includes a toothed material box 101, which is a cuboid container with openings on both sides. The inner side walls of the toothed material box 101 are provided with toothed grooves 102 for stacking lead wire frames layer by layer. Specifically, these toothed grooves 102 appear in pairs and are horizontally symmetrical.

[0060] like Figure 3As shown, the lifting and assembling unit 2 includes a vertically fixed frame 201 on the frame 6. A lifting seat 203 is provided inside the frame 201. Specifically, the lifting seat 203 slides vertically by engaging with the guide surface of the frame 201 via a linear bearing or slider. A toothed material box 101 is fixed to the side of the lifting seat 203. A first hydraulic rod 204 (or a servo electric cylinder) is installed on the top of the frame 201. The piston rod of the first hydraulic rod 204 extends downwards, and its end is fixedly connected to the top of the lifting seat 203. By controlling the extension and retraction of the first hydraulic rod 204, the lifting seat 203 can be driven to lift and lower the toothed material box 101 as a whole, thereby precisely adjusting the frame of any layer inside the material box to the "material picking height" flush with the subsequent material picking mechanism.

[0061] like Figure 4 As shown, the rotary table 3 is located directly in front of the discharge port of the toothed material box 101, and is used to receive the frame and realize the alternation of work positions. It includes a rotating plate 301. The rotating plate 301 is rotatably mounted on the frame 6 and is driven by a servo motor (not shown in the figure, connected to the rotating plate 301 through a reducer) to rotate 180 degrees.

[0062] Two side beams 302 are symmetrically fixed on the top surface of the rotating plate 301. Between the two side beams 302, a middle beam 303 is fixed in the middle of the rotating plate 301. The two side beams 302 and the middle beam 303 together enclose two identical receiving stations 304. These are used to limit and support the frame after it is placed in. The rotation of the rotating plate 301 allows the two receiving stations 304 to alternately be in the positions of "receiving station" (aligned with the toothed material box) and "transfer station" (aligned with subsequent equipment such as robotic arms).

[0063] like Figure 5 As shown, the lead screw motor drive unit 4 includes two symmetrically arranged L-shaped support plates 401, which are fixed to the frame 6 by bolts and located on the side of the rotating plate 301. A lead screw 403 is rotatably connected between the two L-shaped support plates 401. A first slide rail 405 is arranged parallel to the lead screw 403 and fixed to the two L-shaped support plates 401. A first servo motor 402 is installed on one side of one of the L-shaped support plates 401. Synchronous pulleys 406 are fixedly connected to the output shaft of the first servo motor 402 and the corresponding ends of the lead screw 403, and a synchronous belt 407 is fitted between the two synchronous pulleys.

[0064] A movable seat 404 is threaded to the outside of the lead screw 403, and its side is slidably connected to the first slide rail 405. When the first servo motor 402 is started, it drives the lead screw 403 to rotate through the synchronous belt 407, thereby driving the movable seat 404 to move linearly along the first slide rail 405.

[0065] like Figure 6-8 As shown, the pull claw part 5 includes a connecting plate 501 fixedly connected to the movable seat 404. The other end of the connecting plate 501 is fixedly connected to the traction seat 502, thereby driving the traction seat 502. A fixed clamping block 503 is fixedly installed on the side of the traction seat 502 facing the toothed material box 101. A cylinder 504 is installed on the top of the traction seat 502. The piston rod of the cylinder 504 passes vertically downward through the traction seat 502, and its end is fixedly connected to a movable clamping block 505.

[0066] It also includes a support rod mechanism, with two symmetrically arranged transmission slots 507 at the bottom of the traction seat 502. A support rod 506 is rotatably connected within each transmission slot 507. In its natural state, the support rod 506 can hang freely under gravity. To achieve automatic deployment and retraction of the support rod 506, a precise gear and rack linkage mechanism is provided: specifically, push plates 508 are slidably connected within the two transmission slots 507. A roller 509 is rotatably connected to the push plate 508 towards the toothed material box.

[0067] A first rack 510 is fixedly installed at the bottom of the push plate 508. A first gear 511 is rotatably installed on the traction seat 502 corresponding to the position of the first rack 510, and this first gear 511 meshes with the first rack 510. A second rack 512 is fixedly installed on the frame 6 along the moving path of the traction seat 502. The two second racks 512 are connected and fixed to the frame 6 via a fixing bracket 513. Specifically, the second racks 512 are fixedly installed on the frame 6 along the moving path of the traction seat 502 via a rigidly installed fixing bracket 513. When the traction seat 502 moves towards the toothed material box 101 under the drive of the lead screw to approach the material picking position, the first gear 511 can precisely engage with the fixed second racks 512.

[0068] In operation, when the traction seat 502 moves towards the toothed material box to pick up material, and the first gear 511 meshes with the second rack 512, the traction seat 502 moves while the second rack 512 remains stationary, forcing the first gear 511 to rotate. The rotation of the first gear 511 drives the meshing first rack 510 to move forward toward the toothed material box. The first rack 510 drives the push plate 508 to move forward synchronously. The roller 509 at the front end of the push plate 508 rolls forward and abuts against the arc-shaped surface at the root of the drooping support rod 506. As the push plate 508 continues to push forward, the roller 509 presses the support rod 506 to rotate upward around its axis of rotation. When the support rod 506 is pushed to a horizontal position, its top surface contacts the inner top wall of the transmission groove 507, thus being reliably limited to a precise horizontal state. At this time, the top surfaces of the two support rods 506 are strictly flush with the top surface of the fixed clamping block 503, forming a complete support plane.

[0069] When the loading is complete and the traction seat 502 returns to its original position, at the appropriate location on the reset path, the first gear 511 will re-engage with the second rack 512 (or the reverse section of the same rack). At this time, the gear rotates in the opposite direction, driving the push plate 508 to retract, and the roller 509 disengages from the limit on the support rod 506. Under the action of gravity, the support rod 506 automatically swings downward, returning to its vertically hanging retracted state, completely avoiding the movement space of the turntable and the frame.

[0070] A remote pushing mechanism is provided between two support rods 506 that have been extended to a horizontal working state. This mechanism includes a rotating shaft 519 rotatably connected to the shaft. A pusher plate 520 is fixedly connected to the middle of the rotating shaft 519. In its natural state, a torsion spring 523 acts on the rotating shaft 519, causing it to tend to keep the pusher plate 520 in a horizontal position. At this time, the back of the pusher plate 520 can abut against a limiting rod 521 fixed to the support rod 506.

[0071] Two third racks 515 are symmetrically fixed on the two side walls of the movable clamping block 505. A rotating shaft 514 is rotatably connected to each of the two support rods 506 on opposite sides. A second gear 516 is fixedly installed on each of the two rotating shafts 514 on opposite sides, and a main traction rod 517 is fixedly connected to the outer side of each of the two rotating shafts 514. When the movable clamping block 505 descends, the third racks 515 and the second gears 516 engage.

[0072] A traction rod 522 is symmetrically fixedly connected to one side of the rotating shaft 519. The traction rod 522 and the main traction rod 517 are connected by a traction wire 518. The torsion spring 523 specifically acts between the rotating plate 524 and the support rod 506 fixed on the rotating shaft 519.

[0073] Specifically, when the cylinder 504 drives the moving clamping block 505 to move downward to perform the clamping action, the third rack 515 fixed on the moving clamping block 505 moves downward synchronously. The third rack 515 meshes with the second gear 516, thereby driving the second gear 516 to rotate at an angle. The second gear 516 drives the rotating shaft 514 and the main traction rod 517 to rotate. The main traction rod 517 pulls the secondary traction rod 522 through the traction wire 518. The secondary traction rod 522 drives the rotating shaft 519 to rotate against the torque of the torsion spring 523, thereby causing the pusher plate 520 fixed on it to flip from a horizontal state to a vertical state. At this time, the working surface of the vertical pusher plate 520 just abuts against the side of the clamped lead frame away from the traction seat 502.

[0074] When the cylinder 504 drives the moving clamp 505 to rise and release the frame, the third rack 515 rises accordingly and disengages from the second gear 516. The torsion spring 523 restores torque to drive the rotating shaft 519 to rotate in the opposite direction, causing the pusher plate 520 to swing back from the vertical position to the horizontal position, preparing for the next operation.

[0075] In use, the operator places a stack of lead frames into the toothed grooves 102 of the toothed material box 101. The control system controls the first hydraulic rod 204 to move, driving the lifting seat 203 to adjust the height of the toothed material box, so that the uppermost frame is aligned with the height of the fixed clamping block 503. At the same time, the control system controls the rotary table motor to drive the rotating plate 301 to rotate, so that an empty receiving station 304 is aligned with the discharge port of the toothed material box.

[0076] Next, the control system starts the first servo motor 402. The first servo motor 402 drives the lead screw 403 to rotate via the synchronous belt 407, which drives the moving seat 404 to move along the first slide rail 405, and then drives the traction seat 502 to move towards the toothed material box 101 via the connecting plate 501.

[0077] Subsequently, as the traction seat 502 moves forward, when its first gear 511 enters the meshing area with the fixed second rack 512, the support rod 506 is automatically extended to a horizontal working state. At this time, the traction seat 502 has just moved to the position of the frame to be retrieved, and the horizontal support rod 506 is located directly below the frame.

[0078] Next, the control system activates cylinder 504. Cylinder 504 drives the moving clamping block 505 to move downward, clamping the target frame together with the fixed clamping block 503. At the same time, the downward movement of the moving clamping block 505 drives the pusher plate 520 to flip from horizontal to vertical through the linkage components such as the third rack 515, the second gear 516, and the traction steel wire 518, and presses against the far end of the frame.

[0079] Next, the first servo motor 402 reverses, driving the traction seat 502 to move the frame towards the receiving station 304 of the rotary table. Throughout the entire pull-out and transfer process: the horizontal support rod 506 provides continuous support at the bottom of the frame, preventing it from sagging and deforming due to gravity; the vertical pusher plate 520 provides continuous pushing force at the far end of the frame, balancing with the clamping end to prevent frame twisting. The frame is smoothly and without deformation "pulled" out of the material box.

[0080] Then, the traction seat 502 moves the frame and accurately places it into the aligned receiving station 304.

[0081] Next, cylinder 504 drives the moving clamp 505 to rise and release the frame. First servo motor 402 drives traction seat 502 to retract and reset. On the reset path, first gear 511 meshes with second rack 512 again, driving push plate 508 to retract, roller 509 disengages, and support rod 506 automatically droops and retracts under gravity. Simultaneously, torsion spring 523 drives push plate 520 to swing back to a horizontal position. The mechanism is fully reset and disengaged from the working area.

[0082] Next, the rotary table motor drives the rotating plate 301 to rotate 180 degrees, moving the workstation carrying the frame to the next process and moving another empty workstation to the receiving position.

[0083] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel rotary linear puller feeding mechanism for a packaging system, comprising a frame (6), characterized in that, The top of the frame (6) is provided with: The storage section (1) includes a toothed box (101), and the inner two side walls of the toothed box (101) are provided with toothed grooves (102) for stacking the lead wire frame layer by layer. The lifting and straightening section (2) is used to adjust the height of the toothed material box (101); The rotating table (3) includes a rotating plate (301) and a motor that drives the rotating plate (301) to rotate. The top of the rotating plate (301) is provided with at least two receiving stations (304) formed by two side beams (302) and a middle beam (303). The lead screw motor drive unit (4) is used to provide linear drive; The pull claw part (5) includes a connecting plate (501) that is driven and connected to the lead screw motor drive part (4), and also includes a traction seat (502), a fixed clamping block (503), a cylinder (504) and a movable clamping block (505). The fixed clamping block (503) is fixed on the side of the traction seat (502) near the toothed material box (101). The cylinder (504) is mounted on the traction seat (502). The movable clamping block (505) is connected to the output end of the cylinder (504). The pull claw part (5) also includes a support rod mechanism that can automatically unfold and provide support for the bottom of the lead wire frame during the process of picking up materials and transferring the lead wire frame by the traction seat (502).

2. The novel rotary linear puller feeding mechanism for a packaging system according to claim 1, characterized in that, The lever mechanism: It includes at least two support rods (506) rotatably connected to the bottom of the traction seat (502), and an unfolding drive assembly for driving the support rods (506) to rotate from a drooping state to a horizontal working state.

3. The novel rotary linear puller feeding mechanism for a packaging system according to claim 2, characterized in that, The deployment driving component includes: A transmission groove (507) is symmetrically opened at the bottom of the traction seat (502), and the support rod (506) is rotatably connected in the transmission groove (507); A push plate (508) is slidably disposed in the transmission groove (507); A roller (509) is rotatably connected to one side of the push plate (508). The roller (509) is used to abut against and push the support rod (506) to rotate when the push plate (508) slides. The first rack (510) is fixed to the bottom of the push plate (508); The first gear (511) is rotatably connected to the traction seat (502) and meshes with the first rack (510); A second rack (512) fixed on the frame (6) and capable of meshing with the first gear (511), the two second racks (512) are connected and fixed to the frame (6) through a fixing bracket (513); When the traction seat (502) is driven to move toward the toothed material box (101), and the first gear (511) meshes with the second rack (512), the first gear (511) rotates and drives the first rack (510) and the push plate (508) to slide toward the toothed material box (101), thereby pushing the support rod (506) to a horizontal working state through the roller (509).

4. The novel packaging system rotary linear puller feeding mechanism according to claim 2, characterized in that, A remote pushing mechanism is provided between the two support rods (506), which includes a pusher plate (520) rotatably connected between the two support rods (506) and a linkage component driven by the cylinder (504) for flipping the pusher plate (520) from a horizontal state to a vertical state when clamping the frame.

5. The novel rotary linear puller feeding mechanism for a packaging system according to claim 4, characterized in that, The linkage component includes: The third rack (515) is fixed on both sides of the movable clamping block (505); A rotating shaft (514) is rotatably connected to the support rod (506). A second gear (516) that can mesh with the third rack (515) is coaxially fixed on the rotating shaft (514), and a main traction rod (517) is fixedly connected to it. A rotating shaft (519) is rotatably connected between the two support rods (506), and the pusher plate (520) is fixed on the rotating shaft (519); A traction rod (522) fixed to the rotating shaft (519); The traction wire (518) connecting the main traction rod (517) and the secondary traction rod (522); A torsion spring (523) acts on the rotating shaft (519) to give the pusher plate (520) a tendency to maintain a horizontal state. When the cylinder (504) drives the moving clamp (505) to move down to the clamping position, the third rack (515) meshes with the second gear (516) and drives the second gear (516), the rotating shaft (514) and the main traction rod (517) to rotate. The traction wire (518) pulls the traction rod (522), causing the rotating shaft (519) to rotate against the torque of the torsion spring (523), thereby flipping the pusher plate (520) from a horizontal state to a vertical state.

6. The novel packaging system rotary linear puller feeding mechanism according to claim 5, characterized in that, Two rotating plates (524) are symmetrically fixedly connected to the rotating shaft (519), and the torsion spring (523) acts between the rotating plate (524) and the support rod (506).

7. The novel packaging system rotary linear puller feeding mechanism according to claim 1, characterized in that, The lifting and material handling unit (2) includes a stand (201) fixedly connected to the frame (6). A first hydraulic rod (204) is installed on the top of the stand (201). The output end of the first hydraulic rod (204) is connected to a lifting seat (203). The toothed material box (101) is fixed to one side of the lifting seat (203).

8. The novel rotary linear puller feeding mechanism for a packaging system according to claim 1, characterized in that, The lead screw motor drive unit (4) includes an L-shaped support plate (401) fixed to the frame (6), a lead screw (403) is rotatably connected to the L-shaped support plate (401), a first servo motor (402) for driving the lead screw (403) to rotate is installed on the L-shaped support plate (401), and a movable seat (404) connected to the traction seat (502) is threaded onto the lead screw (403).

9. The novel packaging system rotary linear puller feeding mechanism according to claim 1, characterized in that, The lead screw motor drive unit (4) further includes a first slide rail (405) fixed on the L-shaped support plate (401), the movable seat (404) is slidably connected to the first slide rail (405), and the lead screw motor drive unit (4) further includes a synchronous pulley (406) fixed to the output shaft of the first servo motor (402) and one end of the lead screw (403), and a synchronous belt (407) connecting the two synchronous pulleys (406).

10. A feeding method using the rotary linear puller feeding mechanism of the novel packaging system according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Place the stacked lead frames into the toothed groove (102) of the toothed material box (101), adjust the height of the toothed material box (101) by lifting and straightening part (2) so that the height of the lead frame to be picked up is aligned with the height of the fixed clamp (503), and drive the rotating table part (3) to rotate an empty receiving station (304) to be aligned with the discharge port of the toothed material box (101); S2. Start the screw motor drive unit (4) and drive the traction seat (502) to move towards the toothed material box (101). During the movement of the traction seat (502), the support rod (506) of the support rod mechanism is driven by the automatic unfolding drive assembly and rotates from the drooping state to the horizontal working state. S3. When the traction seat (502) moves to the position of the lead frame to be picked up, the starting cylinder (504) drives the moving clamp (505) to move downward, and cooperates with the fixed clamp (503) to clamp the lead frame. S4. The screw motor drive unit (4) reverses the drive, causing the traction seat (502) to move the clamped lead frame towards the receiving station (304). During this movement, the support rod (506) in the horizontal working state moves synchronously with the traction seat (502) and continuously provides bottom support for the cantilever part of the lead frame. S5. Place the lead frame in the receiving station (304); S6. The cylinder (504) drives the moving clamp (505) to rise and release the lead wire frame. The screw motor drive unit (4) drives the traction seat (502) to reset. During the reset movement of the traction seat (502), the support rod (506) is driven to rotate from the horizontal working state to the drooping state. S7. Drive the rotating plate (301) of the rotating table (3) to rotate, turn out the receiving station (304) carrying the lead frame, and turn another empty receiving station (304) into the position aligned with the discharge port of the toothed box (101).

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