Chip lead frame visual inspection and stacked material sorting device

Abstract

The invention discloses a chip lead frame visual inspection and material stacking sorting device, and relates to the technical field of lead frame material stacking, the chip lead frame visual inspection and material stacking sorting device comprises a conveyor, two sides of the conveyor are symmetrically provided with limiting assemblies, the upper end of one side of the conveyor is provided with a visual inspection mechanism, and the other side of the conveyor is provided with an air injection mechanism; a blocking assembly is installed at the end, away from the visual inspection mechanism, of the conveyor, a material stacking assembly is arranged on the side, close to the blocking assembly, of the conveyor, a lifting assembly is installed at the lower end of the material stacking assembly, the material stacking assembly adopts a structure that a first enclosure frame and a second enclosure frame are oppositely adjustable, and a screw pair is formed through a positive and negative screw and a square nut. The first enclosure frame and the second enclosure frame can synchronously and oppositely displace by rotating the handle by one circle, the insertion plate is arranged between the first enclosure frame and the second enclosure frame, the first enclosure frame and the second enclosure frame are prevented from being separated through guiding of the insertion groove, and the anti-disengaging assembly can conduct limiting at the upper ends of the first enclosure frame and the second enclosure frame to prevent the lead frame from disengaging and falling off.

Description

Technical Field

[0001] This invention relates to the field of lead frame stacking technology, specifically to a chip lead frame visual inspection and stacking sorting device. Background Technology

[0002] As semiconductor packaging rapidly evolves towards higher density, thinner profiles, and higher pin counts, the lead frame, serving as the electromechanical transition carrier between the chip and external pins, directly determines the subsequent packaging yield through its manufacturing precision. Currently, lead frames are generally produced using high-speed stamping and electroplating roll-to-roll methods. Under such high-speed, ultra-thin, and micro-pitch processing conditions, the following defects are highly likely to occur: stamping burrs, missing or warped pins, and electroplating bridging. To improve detection efficiency, the industry has gradually introduced online inspection solutions based on machine vision. The main approach involves placing a vision inspection camera above the conveyor, triggering sensors to take pictures, and then identifying defects through image comparison. Some manufacturers have also switched to using line scanning (linear array) cameras combined with LED linear focusing light sources. When non-conforming products are detected, rejection equipment can be added in the middle of the conveyor to remove them, while conforming products can be stacked and collected at the end of the conveyor.

[0003] Currently, some companies are trying to use lifting pallets and enclosure structures for automatic sorting and stacking, but they generally have the following defects: First, the spacing between the enclosures is mostly fixed and cannot be adjusted according to different models of lead frames; second, there is a lack of effective anti-detachment structures, and the top lead frame is prone to jump out and detach when the equipment is running at high speed or stopping suddenly, causing material mixing or damage.

[0004] Therefore, we have launched a chip lead frame visual inspection and stacking sorting device. Summary of the Invention

[0005] The purpose of this invention is to provide a chip lead frame visual inspection and stacking sorting device, thereby solving the problems mentioned in the background above.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A chip lead frame visual inspection and stacking sorting device includes a conveyor with limit components symmetrically arranged on both sides of the conveyor. A visual inspection mechanism is arranged at the upper end of one side of the conveyor, and an air jet mechanism is arranged on the other side of the conveyor. The visual inspection mechanism and the air jet mechanism are located between two adjacent limit components. A blocking component is installed at the end of the conveyor away from the visual inspection mechanism. A stacking component is arranged on the side of the conveyor close to the blocking component. A lifting component is installed at the lower end of the stacking component.

[0008] The stacking assembly includes a first frame and a second frame, which are arranged opposite to each other. Support members are symmetrically installed at the lower ends of the first frame and the second frame. Anti-detachment components are symmetrically hinged at the upper ends of the first frame and the second frame. A positive and negative screw is provided at the end of the stacking assembly away from the conveyor.

[0009] Furthermore, the limiting component includes a fixed frame and a movable groove opened in the middle of the upper end of the fixed frame, a ruler plate is connected through the middle of the movable groove, and a limiting plate is installed at one end of the ruler plate.

[0010] Furthermore, a base plate is fixedly installed at the lower end of the side of the movable groove away from the limiting plate, and a top plate is fixedly installed at the upper end of the side of the movable groove away from the limiting plate. The base plate and the top plate are arranged opposite to each other. The ruler plate is located between the base plate and the top plate. A fixing nut is fixedly installed in the middle of the top plate, and a locking screw is threadedly connected in the middle of the fixing nut.

[0011] Furthermore, the blocking assembly includes a blocking plate and a straight groove formed in the middle of the blocking plate. A rodless cylinder is installed at the end of the blocking plate away from the conveyor. A guide slider is slidably connected in the middle of the rodless cylinder. A push plate is fixedly installed on one side of the guide slider.

[0012] Furthermore, the pusher plate moves through the straight groove, and a baffle plate is fixedly installed on the side of the pusher plate away from the guide slider.

[0013] Furthermore, a first insert plate and a second insert plate are fixedly installed on the side of the first frame near the second frame, and a base is fixedly installed on the bottom of both the first frame and the second frame, with a square nut fixedly installed on one side of the base.

[0014] Furthermore, the second frame has a first slot and a second slot on the side near the first frame, and through slots are symmetrically provided on the lower ends of both sides of the second frame and the first frame. Anti-detachment holes are provided in the middle of the upper ends of the second frame and the first frame.

[0015] Furthermore, the support includes a protective cover and an inclined support plate disposed on one side of the protective cover. A connecting plate is fixedly installed at one end of the inclined support plate. The connecting plate is movably inserted into the inside of the protective cover. Buffer springs are installed at intervals at the end of the connecting plate near the protective cover.

[0016] Furthermore, the anti-detachment component includes a convex plate and a rotating shaft installed in the middle of the convex plate. The upper end of the rotating shaft is rotatably connected to the anti-detachment plate, and the anti-detachment plate has an insertion hole in the middle, into which a positioning pin is inserted.

[0017] Furthermore, the lifting assembly includes a lifting cylinder and a support plate mounted on the upper end of the lifting cylinder, with a contact switch disposed in the middle of the support plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The stacking assembly adopts an adjustable structure with the first and second frames facing each other. The positive and negative screws and the square nut form a helical pair. Turning the handle one turn can realize the synchronous opposite displacement of the first and second frames. Insert plates and slots are set between the first and second frames to prevent the first and second frames from separating.

[0020] 2. The anti-detachment component can limit the upper end of the first and second frames to prevent the lead frame from falling off. The positioning pin can pass through the insertion hole and the anti-detachment hole to limit and fix the anti-detachment plate, preventing the anti-detachment plate from rotating on its own. At this time, the anti-detachment plates will move closer to each other, blocking the lead frame above the first and second frames. When it is necessary to remove the anti-detachment plate, the positioning pin can be removed to disengage from the insertion hole and the anti-detachment hole. Finally, the anti-detachment plates can be rotated 180 degrees to move away from each other. At this time, the lead frame of the material in the first and second frames can be taken out.

[0021] 3. The blocking component can block and position the lead frame at the end of the conveyor. The rodless cylinder can drive the push plate to move laterally through the guide slider. At this time, the push plate will push the lead frame to the lower end of the inner cavity of the first and second frames. When the push plate pushes the lead frame to move, the baffle plate will move synchronously to the top of the conveyor to block the next lead frame that needs to be stacked, so that the next lead frame is limited in the middle of the limiting component and cannot contact the baffle plate. When the push plate moves away from the stacking component, the baffle plate will disengage from the conveyor. At this time, the next lead frame can continue to move with the conveyor, so that the lead frame can be accurately pushed into the stacking component. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a chip lead frame visual inspection and stacking sorting device according to the present invention;

[0023] Figure 2 This is a schematic diagram of the limiting component structure of a chip lead frame visual inspection and stacking sorting device according to the present invention;

[0024] Figure 3 This is a schematic diagram of the blocking component structure of a chip lead frame visual inspection and stacking sorting device according to the present invention.

[0025] Figure 4 This is a schematic diagram of the stacking component structure of a chip lead frame visual inspection and stacking sorting device according to the present invention;

[0026] Figure 5 This is a diagram showing the first and second frames of a chip lead frame visual inspection and stacking sorting device according to the present invention.

[0027] Figure 6 This is a schematic diagram of the second frame structure of a chip lead frame visual inspection and stacking sorting device according to the present invention;

[0028] Figure 7 This invention relates to a chip lead frame visual inspection and stacking sorting device. Figure 6 A magnified view of the structure at point A in the middle;

[0029] Figure 8 This is a schematic diagram of the support structure of a chip lead frame visual inspection and stacking sorting device according to the present invention.

[0030] In the diagram: 1. Conveyor; 2. Limiting assembly; 21. Fixed frame; 22. Movable trough; 221. Base plate; 222. Top plate; 223. Fixing nut; 224. Locking screw; 23. Ruler plate; 24. Limiting plate; 3. Vision inspection mechanism; 4. Air jet mechanism; 5. Blocking assembly; 51. Blocking plate; 52. Straight trough; 53. Rodless cylinder; 54. Guide slider; 55. Push plate; 551. Material stop plate; 6. Stacking assembly; 61. First frame; 611. First insert plate; 612. Second insert plate; 613. 614. Base; 62. Square nut; 63. Second frame; 64. First slot; 65. Second slot; 66. Through slot; 67. Anti-detachment hole; 68. Support component; 69. Protective cover; 60. Inclined support plate; 61. Connecting plate; 62. Buffer spring; 63. Anti-detachment component; 64. Protruding plate; 65. Rotating shaft; 66. Anti-detachment plate; 66. Insertion hole; 67. Positioning pin; 68. Positive and negative screws; 79. Lifting component; 70. Lifting cylinder; 71. Support plate; 72. Contact switch. Detailed Implementation

[0031] 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.

[0032] Example 1:

[0033] Please see Figure 1 , Figure 4 and Figure 5A chip lead frame visual inspection and stacking sorting device includes a conveyor 1. The conveyor 1 belt is made of 2mm thick anti-static PU. Limiting components 2 are symmetrically arranged on both sides of the conveyor 1. A visual inspection mechanism 3 is arranged at the upper end of one side of the conveyor 1. An air jet mechanism 4 is arranged on the other side of the conveyor 1. A collection box is arranged opposite the air jet mechanism 4 for collecting the lead frames that are rejected and blown away by the air jet mechanism 4. The collection box and the air jet mechanism 4 are located between the two limiting components 2. The rejected lead frames will not be blocked by the limiting components 2. The visual inspection mechanism 3 and the air jet mechanism 4 are located between two adjacent limiting components 2. A blocking component 5 is installed at the end of the conveyor 1 away from the visual inspection mechanism 3. A stacking component 6 is arranged on the side of the conveyor 1 close to the blocking component 5. A lifting component 7 is installed at the lower end of the stacking component 6.

[0034] The stacking assembly 6 includes a first frame 61 and a second frame 62. The first frame 61 and the second frame 62 are U-shaped semi-enclosed structures. The first frame 61 and the second frame 62 are arranged opposite to each other. Support members 63 are symmetrically installed at the lower ends of the first frame 61 and the second frame 62. Anti-detachment components 64 are symmetrically hinged at the upper ends of the first frame 61 and the second frame 62. Positive and negative screws 65 are provided at the end of the stacking assembly 6 away from the conveyor 1.

[0035] A first insert plate 611 and a second insert plate 612 are fixedly installed on the side of the first frame 61 near the second frame 62. Long strip grooves are provided on both sides of the first insert plate 611 and at both ends of the second insert plate 612. The first insert plate 611 is configured in two sets, with a gap between the two sets of first insert plates 611. A first slot 621 and a second slot 622 are provided on the side of the second frame 62 near the first frame 61. The first insert plate 611 and the first slot 621 are movably connected, and the second insert plate 612 and the second slot 622 are movably connected to prevent the first frame 61 from detaching when it moves away from the second frame 62. Slider blocks are symmetrically installed on the inner walls of both sides of the first slot 621 and at both ends of the second slot 622. The sliders are slidably connected to the long strip grooves to prevent the first insert plate 611 and the second insert plate 612 from detaching from the first slot 621 and the second slot 622.

[0036] The bottom of both the first frame 61 and the second frame 62 is fixedly installed with a base 613. A square nut 614 is fixedly installed on one side of the base 613. The square nut 614 is threadedly connected to the positive and negative screws 65. The two ends of the positive and negative screws 65 are supported by a support frame, which is fixed to the ground by bolts. An anti-rollover limit plate is set in the middle of the support frame. The anti-rollover limit plate is located below the positive and negative screws 65 and the square nut 614, so that the square nut 614 keeps the movement in a straight line. One end of the positive and negative screws 65 is driven by a handle, which makes it convenient to adjust the distance between the first frame 61 and the second frame 62.

[0037] Example 2:

[0038] Please see Figure 1-2 The limiting component 2 includes a fixed frame 21 and a movable groove 22 opened in the middle of the upper end of the fixed frame 21. A ruler plate 23 is connected through the middle of the movable groove 22. The surface of the ruler plate 23 is provided with a scale. The ruler plate 23 can move through the movable groove 22. A limiting plate 24 is installed at one end of the ruler plate 23. The limiting plate 24 can limit the conveying guide frame on both sides of the conveyor 1. A bottom plate 221 is fixedly installed at the lower end of the side of the movable groove 22 away from the limiting plate 24. A top plate 222 is fixedly installed at the upper end of the side of the movable groove 22 away from the limiting plate 24. The bottom plate 221 and the top plate 222 are arranged opposite to each other. The ruler plate 23 is located between the bottom plate 221 and the top plate 222. A fixing nut 223 is fixedly installed in the middle of the top plate 222. A nylon insert locking piece (model: DIN985-M8) is provided above the fixing nut 223 to loosen the movement. A locking screw 224 (the bottom surface of the locking screw 224 is a rubber layer) is threadedly connected in the middle of the fixing nut 223. When the ruler plate 23 moves the limit plate 24 to adjust its position, the locking screw 224 can be rotated to move down and press against the ruler plate 23 to prevent the ruler plate 23 from moving on its own. When it is necessary to adjust again, the locking screw 224 can be reversed to rise and disengage from the ruler plate 23. When there is no manual rotation of the locking screw 224, the fixing nut 223 can lock the locking screw 224.

[0039] Example 3:

[0040] Please see Figure 1 and Figure 3 The blocking component 5 includes a blocking plate 51 and a straight groove 52 in the middle of the blocking plate 51. A rodless cylinder 53 is installed at the end of the blocking plate 51 away from the conveyor 1. A guide slider 54 is slidably connected in the middle of the rodless cylinder 53. The rodless cylinder 53 is model SMCCY1S25-500 and has a built-in magnetic ring. The guide slider 54 is installed in parallel with the linear guide rail THKSR20W. A push plate 55 is fixedly installed on one side of the guide slider 54. The push plate 55 passes through the straight groove 52 to facilitate linear displacement and push the lead frame. The push plate 55 moves through the straight groove 52. A baffle plate 551 is fixedly installed on the side of the push plate 55 away from the guide slider 54. PU microporous foam is bonded to the front end of both the blocking plate 51 and the baffle plate 551 to prevent the lead frame from rebounding and causing secondary positioning errors.

[0041] After the lead frame is conveyed on conveyor 1 and monitored by vision inspection mechanism 3 and rejected by air jet mechanism 4, the lead frame is conveyed to one end of conveyor 1 where it is blocked by baffle plate 51 and cannot move. There is space between baffle plate 51 and limiting component 2 to facilitate the activation of rodless cylinder 53, which drives push plate 55 to move laterally through guide slider 54. At this time, push plate 55 will push the lead frame on conveyor 1 to the lower end of the inner cavity of first frame 61 and second frame 62. When push plate 55 pushes lead frame to move, baffle plate 551 will move synchronously. The push plate 55 blocks the next lead frame that needs to be stacked above the conveyor 1, so that the next lead frame is limited in the middle of the limiting component 2 and cannot contact the blocking plate 51. When the push plate 55 moves away from the stacking component 6, the blocking plate 551 will disengage from the conveyor 1. At this time, there is no restriction between the limiting component 2 and the blocking plate 51, and the lead frame can continue to move with the conveyor 1 until it is limited by the blocking plate 51 and cannot move. At this time, the rodless cylinder 53 can be started again to push the lead frame on the conveyor 1 to move through the push plate 55.

[0042] Example 4:

[0043] Please see Figure 4-6 and Figure 8 The support member 63 includes a protective cover 631 and an inclined support plate 632 disposed on one side of the protective cover 631. A groove is formed on one side of the protective cover 631, and a long sliding groove is formed on the inner wall of the groove. A connecting plate 633 is fixedly installed at one end of the inclined support plate 632, and the connecting plate 633 is movably inserted into the interior of the protective cover 631. Through slots 623 are symmetrically formed at the lower ends of both sides of the second frame 62 and the first frame 61. The inclined support plate 632 and the connecting plate 633 movably pass through the through slots 623. Buffer springs 634 are installed at intervals on one end of the connecting plate 633 near the protective cover 631, and the other end of the buffer springs 634 is fixed to the inner wall of the protective cover 631. Sliding blocks are symmetrically formed on both sides of the end of the connecting plate 633 away from the inclined support plate 632. The block slides into the long groove to prevent the connecting plate 633 from detaching from the protective cover 631. The lower end of the inclined support plate 632 is an inclined surface. When the lead frame is pushed upward, the two sides of the lead frame slide into contact with the inclined surface at the lower end of the inclined support plate 632. At this time, the inclined support plate 632 will drive the connecting plate 633 to retract into the protective cover 631, and the buffer spring 634 will be squeezed and deformed. When the lead frame is pushed to the top of the inclined support plate 632, the buffer spring 634 will rebound the connecting plate 633 and the inclined support plate 632. At this time, the two sides of the lead frame will be blocked by the inclined support plate 632, and the inclined support plate 632 will support the lead frame below, so that the lead frame can be stacked inside the first frame 61 and the second frame 62.

[0044] Example 5:

[0045] Please see Figure 4-7The anti-detachment component 64 includes a convex plate 641 and a rotating shaft 642 installed in the middle of the convex plate 641. An anti-detachment plate 643 is rotatably connected to the upper end of the rotating shaft 642. The anti-detachment plate 643 can be rotated and adjusted at the upper ends of the first frame 61 and the second frame 62 via the rotating shaft 642. An insertion hole 644 is opened in the middle of the anti-detachment plate 643, and a positioning pin 645 is inserted into the insertion hole 644. Anti-detachment holes 624 are opened in the middle of the upper ends of the second frame 62 and the first frame 61. The insertion hole 644 and the anti-detachment hole 624 are aligned and have the same diameter, so that the positioning pin 645 can pass through the insertion hole 644. The anti-detachment plate 643 is fixed by the anti-detachment hole 624 to prevent it from rotating on its own. At this time, the anti-detachment plates 643 will move closer to each other, which will help to block the guide frame of the aggregate in the first frame 61 and the second frame 62 and prevent the guide frame from gradually rising and falling off. When it is necessary to remove the anti-detachment plate 643, the positioning pin 645 can be removed to disengage from the insertion hole 644 and the anti-detachment hole 624. Finally, the anti-detachment plates 643 can be rotated 180 degrees away from each other. At this time, the guide frame of the aggregate in the first frame 61 and the second frame 62 can be taken out.

[0046] Example 6:

[0047] Please see Figure 4 and Figure 5 The lifting assembly 7 includes a lifting cylinder 71 and a support plate 72 mounted on the upper end of the lifting cylinder 71. The lifting cylinder 71 is model MCCDBXWN25-100A, with a built-in adjustable hydraulic buffer RB0806 and a VPA342-1-03 two-position five-way self-locking valve in the air circuit. When the air supply is cut off, the piston automatically locks to prevent the entire stack of lead wire frames from falling. The top surface of the support plate 72 is aligned with the top surface of the belt on the conveyor 1. A contact switch 73 is installed in the middle of the support plate 72. The contact switch 73 is model D5F-2B34. In the initial state, the lifting cylinder 71 drives the pallet 72 to the lowest position. When the first lead frame is pushed above the pallet 72 by the push plate 55, the contact switch 73 can monitor in real time whether there is a lead frame above the pallet 72. When a lead frame is detected, the push plate 55 moves back, and then the lifting cylinder 71 can be activated to make the pallet 72 push the lead frame up. When the lead frame reaches above the inclined support plate 632 (the highest point of the stroke of the lifting cylinder 71), the lifting cylinder 71 will drive the pallet 72 to retract to its original position to wait for the next lifting operation.

[0048] It should be noted that:

[0049] Visual inspection agency 3 utilizes existing technology and mainly includes the following workflow:

[0050] Camera trigger timing:

[0051] The "encoder and programmable delay" method is adopted: the rotary encoder outputs 1 pulse for every 1 mm the conveyor belt advances; the PLC triggers the camera after "the front end of the frame reaches the detection position and delays X pulse", and the X value is written into the recipe through the initial calibration.

[0052] Image processing workflow:

[0053] Positioning: Halcon's "grayscale morphology and BLOB" algorithm is used to extract the outer contour of the frame and calculate the center and angle; Defect detection: missing pins: local grayscale abrupt changes are detected using a sliding window; raised feet: height map is obtained using a 3D laser profilometer (LMIGocator2410); Result output: OK / NG signals are sent to the jet mechanism 4 via ProfinetRT with a period ≤4ms.

[0054] Closed-loop feedback:

[0055] For every 100 consecutive tests, the system automatically calculates the false negative rate. If the rate exceeds the limit, the system automatically writes back the current exposure time, gain, and upper and lower threshold limits to the camera parameter area and generates an SPC report.

[0056] The jet mechanism 4 is existing technology and mainly includes the following workflow:

[0057] The blowing end of the jet mechanism 4 uses an SMCJET-413 0.7mm diameter flat nozzle with a jet angle of 30 degrees. It can generate an impulse of 0.9N / s under a gas pressure of 0.5MPa, which is sufficient to make the 0.3g lead frame move laterally away from the conveyor 1.

[0058] Gas line quick purging:

[0059] The solenoid valve (SMCVQZ115) and the quick exhaust valve (SMCVQ110) are connected in series, with an exhaust time of <8ms, ensuring that NG parts can still be reliably rejected during high-speed conveying (V=0.4m / s).

[0060] In summary: The lead frame is fed into the inlet of conveyor 1 by a vibratory feeder or hopper. The ruler plates 23 of the limiting components 2 on both sides of conveyor 1 can be pre-adjusted according to the width of the lead frame and clamped and fixed by locking screws 224, so that the lead frame can only slide along the conveying direction on the conveyor belt surface. When the lead frame reaches below the vision inspection mechanism 3, the vision inspection mechanism 3 can take a picture through a camera. Then the lead frame is moved between the jetting mechanism 4 and the collection box. At this time, the unqualified lead frames will be blown away from conveyor 1 and fall into the collection box, while the qualified lead frames will continue to be conveyed to one side of the blocking component 5. When the rodless cylinder 53 drives the guide slider 54 and the push plate 55 to move laterally, it accurately pushes the lead frame into the inner cavity of the stacking assembly 6. During this process, the baffle plate 551 will move synchronously above the conveyor 1 to block the next lead frame that needs to be stacked. When the push plate 55 moves away from the stacking assembly 6, the baffle plate 551 will disengage from the conveyor 1. At this time, there is no restriction between the limiting assembly 2 and the baffle plate 51, and the lead frame can continue to move with the conveyor 1 until it is limited by the baffle plate 51 and cannot move. Then the rodless cylinder 53 can be restarted to push the lead frame on the conveyor 1 to move through the push plate 55.

[0061] The stacking assembly 6 is formed by the first frame 61 and the second frame 62 into a U-shaped semi-enclosed cavity. When facing lead frames of different specifications, the handle at one end of the positive and negative screws 65 can be rotated. At this time, the two square nuts 614 will drive the first frame 61 and the second frame 62 to move synchronously in opposite directions, adjusting the distance between the first frame 61 and the second frame 62. In the initial state, the lifting cylinder 71 drives the support plate 72 to the lowest position. When the first lead frame is pushed above the support plate 72 by the push plate 55, the contact switch 73 can monitor in real time whether there is a lead frame above the support plate 72. When a lead frame is detected, the contact switch will detect the lead frame. After the wire frame is lifted, the push plate 55 moves back, and then the lifting cylinder 71 can be activated to make the support plate 72 push the wire frame to rise. When the wire frame reaches above the inclined support plate 632 (the highest point of the lifting cylinder 71's stroke), the lifting cylinder 71 will drive the support plate 72 to retract to its original position to wait for the next lifting operation. As the stacking height increases, the anti-detachment plate 643 always covers the first frame 61 and the second frame 62. When the stack reaches the preset number of pieces, the positioning pin 645 is manually pulled out, and then the anti-detachment plate 643 is rotated outward by 180 degrees. Finally, the entire stack of qualified wire frames can be taken out at once.

[0062] The above describes the entire working principle of this invention.

[0063] In this invention, the installation, connection, or setting methods of all the above components are common mechanical methods, and the specific structure, model, and coefficient indicators of all components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0064] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

[0065] In this invention, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are merely used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A chip lead frame visual inspection and stacking sorting device, comprising a conveyor (1), characterized in that: The conveyor (1) is symmetrically provided with limit components (2) on both sides. A vision inspection mechanism (3) is provided at the upper end of one side of the conveyor (1). A jetting mechanism (4) is provided on the other side of the conveyor (1). The vision inspection mechanism (3) and the jetting mechanism (4) are located between two adjacent limit components (2). A blocking component (5) is installed at the end of the conveyor (1) away from the vision inspection mechanism (3). A stacking component (6) is provided on the side of the conveyor (1) close to the blocking component (5). A lifting component (7) is installed at the lower end of the stacking component (6). The stacking assembly (6) includes a first frame (61) and a second frame (62), the first frame (61) and the second frame (62) are arranged opposite to each other, the lower ends of the first frame (61) and the second frame (62) are symmetrically equipped with support members (63), the upper ends of the first frame (61) and the second frame (62) are symmetrically hinged with anti-detachment components (64), and the end of the stacking assembly (6) away from the conveyor (1) is provided with positive and negative screws (65).

2. The chip lead frame visual inspection and stacking sorting device as described in claim 1, characterized in that: The limiting component (2) includes a fixed frame (21) and a movable groove (22) opened in the middle of the upper end of the fixed frame (21). A ruler plate (23) is connected through the middle of the movable groove (22), and a limiting plate (24) is installed at one end of the ruler plate (23).

3. The chip lead frame visual inspection and stacking sorting device as described in claim 2, characterized in that: A base plate (221) is fixedly installed on the lower end of the side of the movable groove (22) away from the limiting plate (24), and a top plate (222) is fixedly installed on the upper end of the side of the movable groove (22) away from the limiting plate (24). The base plate (221) and the top plate (222) are arranged opposite to each other. The ruler plate (23) is located between the base plate (221) and the top plate (222). A fixing nut (223) is fixedly installed in the middle of the top plate (222), and a locking screw (224) is threadedly connected in the middle of the fixing nut (223).

4. The chip lead frame visual inspection and stacking sorting device as described in claim 1, characterized in that: The blocking assembly (5) includes a blocking plate (51) and a straight groove (52) in the middle of the blocking plate (51). A rodless cylinder (53) is installed at the end of the blocking plate (51) away from the conveyor (1). A guide slider (54) is slidably connected in the middle of the rodless cylinder (53). A push plate (55) is fixedly installed on one side of the guide slider (54).

5. The chip lead frame visual inspection and stacking sorting device as described in claim 4, characterized in that: The push plate (55) moves through the straight groove (52), and a baffle plate (551) is fixedly installed on the side of the push plate (55) away from the guide slider (54).

6. The chip lead frame visual inspection and stacking sorting device as described in claim 1, characterized in that: A first insert plate (611) and a second insert plate (612) are fixedly installed on the side of the first frame (61) near the second frame (62). A base (613) is fixedly installed at the bottom of both the first frame (61) and the second frame (62). A square nut (614) is fixedly installed on one side of the base (613).

7. The chip lead frame visual inspection and stacking sorting device as described in claim 1, characterized in that: The second frame (62) has a first slot (621) and a second slot (622) on the side near the first frame (61). The lower ends of both sides of the second frame (62) and the first frame (61) are symmetrically provided with through slots (623). The middle of the upper end of the second frame (62) and the first frame (61) is provided with an anti-detachment hole (624).

8. The chip lead frame visual inspection and stacking sorting device as described in claim 1, characterized in that: The support member (63) includes a protective cover (631) and an inclined support plate (632) provided on one side of the protective cover (631). A connecting plate (633) is fixedly installed at one end of the inclined support plate (632). The connecting plate (633) is movably inserted into the inside of the protective cover (631). A buffer spring (634) is installed at intervals at one end of the connecting plate (633) near the protective cover (631).

9. The chip lead frame visual inspection and stacking sorting device as described in claim 1, characterized in that: The anti-detachment component (64) includes a convex plate (641) and a rotating shaft (642) installed in the middle of the convex plate (641). An anti-detachment plate (643) is rotatably connected to the upper end of the rotating shaft (642). An insertion hole (644) is opened in the middle of the anti-detachment plate (643), and a positioning pin (645) is inserted into the insertion hole (644).

10. The chip lead frame visual inspection and stacking sorting device as described in claim 1, characterized in that: The lifting assembly (7) includes a lifting cylinder (71) and a support plate (72) installed on the upper end of the lifting cylinder (71), and a contact switch (73) is provided in the middle of the support plate (72).

Images